JP2010092614A - Connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector capable of surely restraining looseness between a connector housing and a connector cover. <P>SOLUTION: The connector 1 is provided with a connector housing 2 in which terminal metal fittings 7 of wire terminals are housed, an overcoat hood 3 covering an outer periphery side of the connector housing 2, a connector cover 5 mounted on the connector housing at a draw-out side of wires 6, and locking means 21, 23 retaining the connector cover 5 to the connector housing 2. The connector housing 2 is equipped with a fitting wall 11 fitted to the connector cover 5 at a wire-drawing out side, and the connector cover 5 is equipped with a contact-fitting face 29 in contact with the fitting wall 11, and elastic members 31, 35 are arranged between the fitting wall 11 and the contact-fitting face 29 for biasing them 2, 5 in a direction separating them from each other. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a connector formed by fastening a connector housing and a connector cover.

A conventional connector in which a connector cover is mounted on a wire drawing side of a connector housing is proposed in Patent Document 1. The connector housing and the connector cover are both made of resin, and the first protrusion and the second groove are formed in the connector housing that accommodates the terminal fitting of the electric wire terminal. The first groove and the second protrusion are formed in the connector cover. The part is formed. Then, the connector cover is assembled to the connector housing such that the first groove of the connector cover is fitted to the first protrusion of the connector housing and the second protrusion of the connector cover is fitted to the second groove of the connector housing. As a result, the connector is assembled. Since the protrusion and the groove are fitted in the connector housing and the connector cover, the connector housing and the connector cover can be resistant to vibrations and the like that attempt to separate the connector housing and the connector cover.
Japanese Patent Laid-Open No. 2003-100379

  However, since the connector housing and the connector cover are made of resin, there is a problem in that rattling is likely to occur due to variation in dimensions.

  For connectors to which electric wires with waterproof plugs made of rubber can be attached, a part of the waterproof plug protrudes from the wire drawing side of the connector housing, and the waterproof plug is pushed when the connector cover is attached to the connector housing. There is a connector that urges the connector housing and the connector cover in a direction away from each other by crushing, and this bias suppresses rattling. However, in this connector, there is a gap on the mating surface between the connector housing and the connector cover. Therefore, there is a problem that the mating surfaces come into contact with each other due to vibrations or the like.

  Then, an object of this invention is to provide the connector which can suppress the backlash between the connector housing which consists of resin, and a connector cover reliably.

  According to a first aspect of the present invention, there is provided a connector housing in which a terminal fitting of an electric wire terminal is accommodated, an outer hood that covers the outer peripheral side of the connector housing, and a connector cover that is attached to the drawing side of the electric wire of the connector housing And a locking means for holding the connector cover on the connector housing, wherein the connector housing is provided with a mating wall with the connector cover on the wire drawing side, and the connector cover includes the mating wall. An abutting mating surface that abuts against the wall is provided, and an elastic member that biases the connector housing and the connector cover in a direction away from each other is disposed between the mating wall and the abutting mating surface. And

  A second aspect of the present invention is the connector according to the first aspect, wherein the elastic member is integrated with at least one of the mating wall and the abutting mating surface.

  Invention of Claim 3 is the connector of Claim 1 or 2, Comprising: The said elastic member consists of a sealing member inserted between the outer periphery of the said connector housing, and the inner periphery of the said mantle hood, The said The mating wall is provided with a packing projecting hole that penetrates to the outside of the mating surface with the mating connector, and the seal member is inserted between the outer periphery of the connector housing and the inner periphery of the outer hood A protrusion protruding outward from the packing protrusion hole, and the protrusion is provided on a protruding shaft portion penetrating the packing protrusion hole and on the tip side of the protruding shaft portion, and is in contact with the alignment wall and the alignment wall. It is characterized in that it is formed by a projecting portion that is crushed between the contacting and abutting contact surfaces and biases the connector cover away from the connector housing.

  The invention according to claim 4 is the connector according to claim 3, wherein the seal member has a seal body in which an opening into which the connector housing is inserted is formed, and four corners of the opening of the seal body. The projections are provided respectively on the surface.

  A fifth aspect of the present invention is the connector according to the third or fourth aspect, wherein the protruding portion has a proximal end portion having a diameter larger than that of the protruding shaft portion, and is contracted from the proximal end portion toward the distal end. It is characterized by comprising a protruding end portion having a diameter.

  According to the present invention, the elastic member disposed between the mating wall of the connector housing and the abutting mating surface of the connector cover urges the connector housing and the connector cover in the direction of separating the connector housing and the connector cover. Backlash between the cover and the cover can be suppressed. Moreover, even for a connector to which a wire having a waterproof plug is applied, since an elastic member is interposed between the connector housing and the connector cover, it can absorb vibrations even if there are vibrations, Thereby, it can also suppress that the mating surface of a connector housing and a connector cover is shaved.

  Hereinafter, the present invention will be described in detail with reference to embodiments illustrated in the drawings. In each embodiment, the same member is assigned the same reference numeral.

[First Embodiment]
1 to 6 show a first embodiment of the present invention, FIG. 1 is an exploded perspective view of the connector of this embodiment, FIG. 2 is a perspective view from the rear before assembly of the connector, and FIG. 2 is a perspective view of the connector cover used in FIG. 2, FIG. 4 is a perspective view from the rear side after assembly of the connector, FIG. 5 is a perspective view of the connector cover in the state of FIG. 4, and FIG. It is sectional drawing and a partial expanded sectional view which show.

  The connector 1 according to this embodiment includes a connector housing 2, a mantle hood 3, and a connector cover 5. The connector housing 2, the outer hood 3 and the connector cover 5 are all formed by injection molding a resin.

  The connector housing 2 accommodates a terminal fitting 7 for an electric wire end. For this reason, a terminal housing chamber 10 for housing the terminal fitting 7 is formed in the connector housing 2. The terminal fitting 7 is attached to the end of the electric wire 6, and the terminal fitting 7 is accommodated in the terminal accommodating chamber 10 by inserting the electric wire 6 into the connector housing 2 from the electric wire drawing side (right side in FIG. 1) shown in FIG. Is done. In this embodiment, an electric wire 6 to which a waterproof plug 8 made of rubber is attached is used.

  A mating wall 11 is integrally formed on the electric wire drawing side of the connector housing 2. The mating wall 11 has a flat plate shape and extends outward in the lateral direction of the connector housing 2. The mating wall 11 is abutted against the connector cover 5 for mounting the connector cover 5 described later.

  The outer hood 3 has a cylindrical shape that covers the outer peripheral side of the connector housing 2. A lever 17 is attached to the outer surface of the outer hood 3. The lever 17 is rotated to assemble the connector 1 to the mating connector. The lever 17 is formed by upper and lower lever side plates 17a and a connecting plate 17b that connects one end side of these lever side plates 17a. In order to attach the lever 17 to the outer hood 3, the lever rotation support shaft 19 protrudes from the upper and lower surfaces of the outer cover hood 3, and the upper and lower lever side plates 17 a have shaft holes into which the lever rotation support shaft 19 is inserted. 20 is formed.

  Cover lock holes 21 are formed in the upper and lower portions of the outer hood 3 on the side of drawing out the wires. The cover lock hole 21 is for locking a state in which a connector cover 5 (described later) is coupled to the outer hood 3, and constitutes a locking means in combination with a locking arm 23 provided in the connector cover 5. .

  A retainer 13 and a packing 15 are disposed between the connector housing 2 and the outer hood 3. The retainer 13 has a window portion 13 a communicating with the terminal accommodating chamber 10 of the connector housing 2.

  The packing 15 covers the periphery of the retainer 13 and the connector housing 2 when the retainer 13 and the connector housing 2 are inserted, and is entirely formed of rubber. The packing 15 includes a cylindrical seal body 14 into which the retainer 13 and the connector housing 2 are inserted, and a flange portion 15 a provided on the wire drawing side of the seal body 14. The packing 15 functions as a sealing member that waterproofs when the flange portion 15 a is inserted between the outer periphery of the connector housing 2 and the inner periphery of the outer jacket hood 3.

  The connector cover 5 is attached to the wire drawing side of the connector housing 2. The connector cover 5 is attached to the connector housing 2 in a state where the electric wire 6 is inserted, and an electric wire insertion hole 25 is formed on the rear end surface. In addition, a hollow waterproof plug housing portion 27 is formed inside the connector cover 5. Further, the upper and lower surfaces of the connector cover 5 are formed with locking arms 23 that constitute locking means together with the cover lock hole 21 described above. A claw-like locking projection 23 a is formed at the distal end of the locking arm 23, and the connector cover 5 is coupled to the mantle hood 3 by engaging the locking projection 23 a with the cover lock hole 21.

  A contact mating surface 29 is formed on the connector housing 2 side of the connector cover 5. The abutting mating surface 29 is provided at a position corresponding to the mating wall 11 formed on the connector housing 2 and is formed to have a surface shape corresponding to the mating wall 11. When the abutting mating surface 29 abuts on the mating wall 11, the connector cover 5 is attached to the wire drawing side of the connector housing 2.

  As shown in FIGS. 1 and 3, an elastic plate 31 made of rubber is attached to the contact surface 29 of the connector cover 5. The elastic plate 31 is formed in a flat plate shape that covers the entire surface of the abutting contact surface 29, and is bonded to the same surface 29 to be integrated. When the connector cover 5 is attached to the connector housing 2, the elastic plate 31 is sandwiched between the mating wall 11 and the abutting mating surface 29 and is compressed, and thus acts to urge them in a separating direction.

  In the above embodiment, the electric wire 6 penetrating the electric wire insertion hole 25 of the connector cover 5 is attached to the connector housing 2 from the electric wire drawing side, while the retainer 13 and the packing 15 are inserted into the outer jacket hood 3 from the opposite side. Thereafter, the connector cover 5 is moved relatively along the electric wires 6 in the direction of the connector housing 2, and the waterproof plug 8 is crushed while the waterproof plug 8 is accommodated in the waterproof plug accommodating portion 27. Then, the connector cover 5 is attached to the connector housing 2 as shown in FIG.

  When the connector cover 5 is attached to the connector housing 2, the mating wall 11 and the abutting mating surface 29 are in contact with each other, and the locking projection 23 a of the locking arm 23 in the connector cover 5 is in the cover lock hole 21 of the connector housing 2. Engage with. Then, due to the engagement between the locking projection 23 a and the cover lock hole 21, the connector cover 5 is connected to the wire drawing side of the connector housing 2.

  The elastic plate 31 provided on the abutting mating surface 29 of the connector cover 5 is compressed as shown in the enlarged views of FIGS. 5 and 6 by the abutting of the mating wall 11 and the abutting mating surface 29 described above. . Since the elastic plate 31 is repelled by this compression, the elastic body 31 biases them in the direction in which the connector housing 2 and the connector cover 5 are separated from each other. Therefore, the backlash between the connector housing 2 and the connector cover 5 can be suppressed by this urging.

  In this embodiment, the elastic plate 31 absorbs vibration and the elastic plate 31 is interposed between the mating wall 11 and the abutting mating surface 29. In addition, the abutting mating surface 29 is not rubbed, and these are not accidentally shaved.

  In this embodiment, the elastic plate 31 is attached to the contact mating surface 29 on the connector cover 5 side. However, the elastic plate 31 may be attached to the mating wall 11 of the connector housing 2. You may attach to both. The elastic plate 31 may be fixed by hooking other than adhesion, or may be sandwiched between the mating wall 11 and the abutting mating surface 29 when the connector cover 5 is attached to the connector housing 2 without being secured.

[Second Embodiment]
7 to 9 show a second embodiment of the present invention. FIG. 7 is a perspective view and a partially enlarged perspective view before the packing 15 and the connector housing 2 are assembled. FIG. 8 is a perspective view and a portion after the assembly. FIG. 9 is an enlarged perspective view and FIG. 9 is a perspective view and a partially enlarged perspective view showing a state in which the connector cover 5 is assembled to the connector housing 2.

  In this embodiment, the protrusion 35 is integrally formed with the packing 15 as a seal member. Therefore, the projection 35 is formed of rubber, like the packing 15. The protrusion 35 is formed on the end surface of the flange portion 15 a of the packing 15 on the connector housing 2 side. That is, the protrusion 35 is formed around the opening 14 a formed in the seal body 14 for inserting the retainer 13 and the connector housing 2. The protrusion 35 is formed so as to protrude in the connector housing 2 direction. In this embodiment, the protrusions 35 are formed at the four corners around the opening 14a.

  On the other hand, a packing protruding hole 37 is formed in the mating wall 11 of the connector housing 2. The packing protruding hole 37 is formed in the mating wall 11 so as to penetrate from the inner side of the connector housing 2 toward the outer side of the mating surface with the mating connector. The protrusions 37 of the packing are penetrated by the protrusions 35. For this reason, the same number as the protrusions 35 is formed at positions corresponding to the protrusions 35.

  As shown in FIG. 7, the protrusion 35 of the packing 15 is formed by a protruding shaft portion 40 that penetrates the packing protruding hole 37 and a protruding portion 41 provided on the distal end side of the protruding shaft portion 40. The projecting portion 41 includes a base end portion 41a having a diameter larger than that of the projecting shaft portion 40 and a projecting end portion 41b that is positioned on the distal end side of the base end portion 41a and gradually decreases in diameter toward the distal end (connector cover 5). Is formed.

  In this embodiment, as shown in FIG. 7, the packing 15 is inserted from the distal ends of the connector housing 2 and the outer hood 3. By this insertion, as shown in FIG. 8, the protrusion shaft portion 40 of the protrusion 35 is passed through the packing protrusion hole 37. By passing through the packing protrusion hole 37, the protrusion 41 of the protrusion 35 protrudes from the mating wall 11 of the connector housing 2 to the mounting side of the connector cover 5. Thus, the protrusion 41 penetrates the mating wall 11 and protrudes toward the connector cover 5, whereby the packing 15 can be prevented from falling off from the connector housing 2.

  FIG. 9 shows a state where the connector cover 5 is attached to the connector housing 2 from the electric wire drawing side after FIG. As in the first embodiment, the connector cover 5 is mounted by engaging the locking projection 23a of the locking arm 23 on the connector cover 5 side with the cover lock hole 21 on the connector housing 2 side.

  When the connector cover 5 is attached, the abutting mating surface 29 of the connector cover 5 abuts on the mating wall 11 of the connector housing 2. Due to this contact, the projecting portion 41 of the projection 35 is crushed and repelled between the mating wall 11 and the abutting mating surface 29, so that the connector cover 5 and the connector housing 2 are urged away from each other. Therefore, the backlash between the connector housing 2 and the connector cover 5 can be suppressed by this urging.

  Further, since the protruding portion 41 is crushed between the mating wall 11 and the abutting mating surface 29, they are not rubbed even if vibrations are applied, and the mating wall 11 and the abutting mating surface 29 are not prepared. It will not be shaved.

  The protrusion 35 only has to pass through the mating wall 11 of the connector housing 2 and has a single-diameter protrusion shape without providing a large-diameter base end portion 41a and a protruding end portion 41b that decreases in diameter toward the distal end. May be.

It is a disassembled perspective view of the connector in 1st Embodiment of this invention. It is a perspective view from the back side before the assembly of the connector of a 1st embodiment. It is a perspective view of the connector cover used for FIG. It is a perspective view from the back side after the assembly of the connector of a 1st embodiment. It is a perspective view of the connector cover in the state of FIG. It is sectional drawing and the partial expanded sectional view which show the assembly state of the connector of 1st Embodiment. It is the perspective view before the assembly of the packing and connector housing in 2nd Embodiment of this invention, and a partial expanded perspective view. It is the perspective view after an assembly | attachment, and a partial expansion perspective view. FIG. 6 is a perspective view and a partially enlarged perspective view of a state in which the connector cover is assembled to the connector housing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Connector 2 Connector housing 3 Outer hood 5 Connector cover 6 Electric wire 7 Terminal metal fitting 11 Matching wall 14 Seal main body 15 Packing 21 Cover lock hole 23 Locking arm 29 Contact surface 31 Elastic plate 35 Protrusion 37 Packing protrusion hole 40 Protrusion shaft 41 Projection 41a Base end 41b Projection

Claims (5)

A connector housing that houses the terminal fitting of the electric wire end, an outer hood that covers the outer peripheral side of the connector housing, a connector cover that is attached to the wire drawing side of the connector housing, and the connector cover that is held by the connector housing A connector having locking means for
The connector housing is provided with a mating wall with the connector cover on the wire drawing side,
The connector cover is provided with an abutting mating surface that abuts on the mating wall,
An elastic member that urges the connector housing and the connector cover to move away from each other is disposed between the mating wall and the contact mating surface. The connector according to claim 1,
The connector, wherein the elastic member is integrated with at least one of the mating wall and the abutting mating surface. The connector according to claim 1 or 2,
The elastic member comprises a seal member inserted between the outer periphery of the connector housing and the inner periphery of the mantle hood,
The mating wall is provided with a packing projection hole that penetrates to the outside of the mating surface with the mating connector,
The seal member is provided with a protrusion protruding outward from the packing protrusion hole in a state of being inserted between the outer periphery of the connector housing and the inner periphery of the outer hood, and the protrusion penetrates the packing protrusion hole. The projection cover is crushed between the mating wall and the abutting mating surface that abuts against the mating wall provided on the distal end side of the projection shank and biases the connector cover away from the connector housing. And a projecting portion. The connector according to claim 3,
The connector, wherein the seal member has a seal body in which an opening into which the connector housing is inserted is formed, and the protrusions are respectively provided at four corners of the opening of the seal body. The connector according to claim 3 or 4,
The protruding portion includes a base end portion having a diameter larger than that of the protruding shaft portion, and a protruding end portion whose diameter decreases from the base end portion toward the tip end.

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