JP2013101760A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent each electric wire led out of a housing from bent at a predetermined angle or larger.SOLUTION: An electric wire cover 60 includes a first part 61 which is fitted to a housing 30, and extends decreasing in width backward from a rear surface side of the housing 30 and accommodates respective electric wires 100 inside so that they extend while bent to the rear surface side of the housing 30, and a second part 62 which extends backward from a rear end of the first part 61 and accommodates the respective electric wires 100 inside so that they extend substantially straight. A bundling band 90 for bundling and fixing the respective electric wires 100 accommodated in the second part 62 is fitted to the second part 62.

Description

  The present invention relates to a connector.

  A conventional connector is disclosed in Patent Document 1. This includes a plurality of terminal fittings connected to the terminal portion of the electric wire, a housing in which each terminal fitting is accommodated, and an electric wire cover attached to the rear end portion of the housing. Each electric wire is pulled out from the rear surface of the housing and accommodated in the electric wire cover. The electric wire cover has a first part that extends from the rear side of the housing to the rear while narrowing, and a second part that extends substantially straight from the rear end of the first part to the rear.

JP 2005-149941 A

  According to the conventional connector, each electric wire drawn from the rear surface of the housing is bent at a predetermined angle with respect to the rear surface side of the housing along the inner wall of the first portion. However, in the above case, since there is no particular device that regulates the bending operation of each electric wire on the inside, each electric wire is bent at a predetermined angle or more, and a large load may be applied to the bent portion. In particular, when a rubber plug is fitted to the front end of each electric wire, if each electric wire is bent greatly, the rubber plug is also greatly elastically deformed in the bending direction, so that the state of close contact with the electric wire is sufficient. In other words, the sealing performance is lowered.

  The present invention has been completed based on the above-described circumstances, and an object thereof is to prevent each electric wire drawn from a housing from being bent at an angle of a predetermined angle or more.

  As means for achieving the above object, the invention of claim 1 includes a plurality of terminal fittings connected to a terminal portion of an electric wire, a housing in which each terminal fitting is accommodated, and a plurality of electric wires are drawn out from the rear surface. A first portion that is attached to the housing and extends from the rear surface side of the housing to the rear while being narrowed, and is accommodated so that the electric wires are bent and extend toward the rear surface side of the housing. And an electric wire cover having a second portion that extends rearward from the rear end of the first portion and accommodates the electric wires therein, and is attached to the second portion and accommodated in the second portion. And a binding band for binding and fixing each electric wire.

  A second aspect of the invention is characterized in that, in the first aspect of the invention, a rubber plug is fitted to a front end portion of each electric wire, and the rubber plug is accommodated in the housing.

  The invention of claim 3 is characterized in that, in the invention of claim 1 or 2, the second part is formed with an insertion hole through which the binding band passes.

  The invention of claim 4 is characterized in that, in the apparatus of any one of claims 1 to 3, the binding band is attached to a front end portion of the second portion.

  According to a fifth aspect of the present invention, in the apparatus according to any one of the first to fourth aspects of the present invention, the outer surface of the second part is positioned to restrict the attachment position of the binding band in the front-rear direction. It is characterized in that the part is formed.

  According to a sixth aspect of the present invention, in the fifth aspect of the present invention, a pair of positioning walls that are parallel to each other and extend in the width direction protrude from the outer surface of the second portion, and the front and rear ends of the positioning portion are The fixing band is partitioned by the positioning walls, and a fixing portion for holding the binding state is formed on the binding band to bulge, and the fixing portion is connected to the positioning walls in the winding direction of the binding band. It is characterized in that it is arranged so that it can come into contact.

<Invention of Claim 1>
Since each electric wire is bound and fixed by a binding band in the second part, the bending angle of each electric wire in the first part is set to a predetermined angle. Therefore, the situation where each electric wire is largely bent at a predetermined angle or more is prevented.

<Invention of Claim 2>
A rubber plug is fitted to the front end portion of each electric wire, and the rubber plug is accommodated in the housing. Therefore, when the rubber plug is bent greatly at a predetermined angle or more in the first portion, the rubber plug is inserted in the bending direction. Is elastically deformed, and there is a concern that a predetermined sealing property cannot be maintained. However, according to the present invention, since the bending angle of each electric wire is set to a predetermined angle by the binding band, the rubber plug is not excessively elastically deformed, and a predetermined sealing property can be maintained.

<Invention of Claim 3>
Since the insertion hole through which the binding band is passed through the second part is formed, the binding position is prevented from being displaced.

<Invention of Claim 4>
Since the binding band is attached to the front end of the second part, the bending angle of the electric wire is reliably set to a predetermined angle in the first part from the rear surface of the housing to the second part.

<Invention of Claim 5>
Since the positioning part for restricting the displacement of the binding band attachment position in the front-rear direction is formed on the outer surface of the second part, the binding position is reliably prevented from being displaced.

<Invention of Claim 6>
The binding band is formed with a bulging fixed part that holds the binding state, and the fixed part is disposed so as to be able to contact both positioning walls in the winding direction of the binding band, so that the fixing part is substantially in the winding direction of the binding band. Positioned.

It is a top view of the connector which concerns on Embodiment 1 of this invention. It is a bottom view of a connector. It is sectional drawing of a connector. It is a top view of an electric wire cover. It is a bottom view of an electric wire cover. It is a side view of an electric wire cover. It is the XX sectional view taken on the line of FIG. It is a rear view of an electric wire cover.

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. The connector 10 according to the present embodiment includes a plurality of terminal fittings 20, a housing 30, an electric wire cover 60, and a binding band 90. The connector 10 can be fitted with a mating connector (not shown). In the following description, in the front-rear direction, the fitting side with the mating connector is the front.

  The terminal fitting 20 is integrally formed by bending a conductive metal plate or the like, and has a main body portion 21 and a barrel portion 22 as shown in FIG. The main body 21 has a rectangular tube shape, and a mating male tab (not shown) is inserted therein to be connected. The barrel portion 22 is crimped and connected to the rubber plug 200 or the electric wire 100 that is fitted to the front end portion of the electric wire 100. Each terminal fitting 20 and each rubber plug 200 includes a relatively small small terminal 21 and a small rubber plug 210, and a relatively large large terminal 23 and a large rubber plug 220.

  As shown in FIG. 3, the housing 30 is made of a synthetic resin, and has a rectangular block-shaped housing main body 31 that is long in the width direction, and a fitting cylinder portion 32 that surrounds the housing main body 31. A fitting space 33 into which the mating connector is fitted is formed between the housing main body 31 and the fitting cylinder portion 32. A seal ring 300 is fitted on the outer peripheral surface of the housing body 31. When the two connectors are fitted, the seal ring 300 is elastically compressed between the housing body 31 and the mating connector so that the mating connector is liquid-tightly sealed.

  A plurality of cavities 34 are formed in the housing body 31 so as to be aligned in the width direction. Each cavity 34 includes a relatively large large cavity 35 positioned at both ends in the width direction of the housing main body 31 and a relatively small small cavity 36 positioned at the center in the width direction of the housing main body 31. A large terminal 23 and a large rubber plug 220 are inserted and accommodated in the large cavity 35 from behind, and a small terminal 21 and a small rubber plug 210 are inserted and accommodated in the small cavity 36 from the rear. Yes.

  The rear surface of the housing main body 31 is a surface from which the electric wire 100 connected to each terminal fitting 20 is drawn out. Among these, a pair of cylinders that accommodates substantially the latter half of the large rubber plug 220 at a position corresponding to the large cavity 35. A portion 37 is formed to protrude rearward. Each rubber plug 200 is elastically brought into close contact with the outer peripheral surface of the electric wire 100 and the inner peripheral surface of the cavity 34, thereby fulfilling the role of liquid-tight sealing around the electric wire 100 and the inside of the housing body 31. As shown in FIGS. 1 and 2, a pair of housing-side lock pieces 38 are formed at the rear ends of the upper and lower surfaces of the housing 30 so as to protrude rearward. A lock projection 39 is formed projecting outward at the tip of each housing-side lock piece 38.

  The electric wire cover 60 is made of synthetic resin and has a plate shape as a whole. As shown in FIG. 4, the first portion 61 extending so as to gradually narrow toward the rear and the rear end of the first portion 61 ( A second portion 62 extending substantially straight from the (narrow end) toward the rear. The second portion 62 is connected to the rear end of the first portion 61 at the center in the width direction of the electric wire cover 60, and has substantially the same front-rear length as the first portion 61.

  As shown in FIGS. 4 to 6, the first portion 61 rises from the bottom wall 63 that gradually narrows and gradually rises from the rear surface side of the housing 30 toward the rear, and from both side edges of the bottom wall 63 in the width direction. A pair of side walls 64 and a pair of eaves walls 65 projecting from the upper ends of both side walls 64 toward the center in the width direction are provided. An inner space defined by the bottom wall 63, both side walls 64, and both side walls 65 serves as a housing space 66 for each electric wire 100 (see FIG. 3). The electric wires 100 drawn out from the rear surface of the housing 30 are supported on the inner surface of the bottom wall 63, and the electric wires 100 positioned at both ends in the width direction are disposed on the inner surfaces of the side walls 64 so as to be in contact with each other. . The both side walls 65 are arranged to face the bottom wall 63 substantially in parallel with the accommodation space 66 in between, and the inner ends of the both side walls 65 are arranged substantially parallel to each other along the front-rear direction.

  A contact portion 67 that can contact the rear surface of the housing 30 is formed at the front end of the first portion 61. The contact part 67 extends substantially in the front-rear direction, the outer surface of the contact part 67 is connected to the outer surface of the rear region in a stepped manner, and the thickness of the contact part 67 is thinner than the plate thickness of the rear region. Has been.

  Further, as shown in FIG. 8, a pair of cover-side lock pieces 68 projecting forward in the width direction are formed at the front end portions of the outer surfaces of the bottom wall 63 and the both side walls 65, respectively. Each cover-side lock piece 68 is disposed outside the abutting portion 67, and as shown in FIG. 6, an entry space of each housing-side lock piece 38 is provided between each cover-side lock piece 68 and the abutting portion 67. 69 is formed. Each cover-side lock piece 68 is formed with a lock hole 71 opened.

  The second portion 62 has a substantially semicircular arc shape in cross section (see FIG. 7), and extends in a bowl shape in the front-rear direction as a whole. Both the inner and outer surfaces of the second part 62 are connected to the inner and outer surfaces of the first part 61 without any step. On the other hand, as shown in FIG. 6, the upper ends (both ends in the width direction) of the second portion 62 are arranged in a stepped manner on the upper ends of the side walls 64 of the first portion 61, and are disposed one step down from the upper ends of the side walls 64. ing.

  As shown in FIG. 4, a plurality of ribs 72 are formed at the rear part of the inner surface of the second part 62 at intervals in the front-rear direction. Each rib 72 is configured to extend in the width direction (circumferential direction) and reach both ends of the second portion 62 in the width direction. Then, as shown in FIG. 3, each rib 72 is fitted into a concave groove 51 provided around the outer peripheral surface of the bellows-like corrugated tube 50, and positions the corrugated tube 50 with respect to the second portion 62. Play a role. The corrugated tube 50 is positioned by the ribs 72 in a state where the electric wires 100 are inserted through the corrugated tube 50, and is fixed integrally with the second portion 62 by winding a tape 400 (FIG. 1).

  Further, as shown in FIGS. 1 and 2, a binding band 90 is attached to the front end portion of the second portion 62 (connection portion with respect to the first portion 61). Here, the binding band 90 includes a flexible band-shaped band main body 91 and a square block-shaped fixing portion 92 formed to bulge at one end of the band main body 91. The other end side of the band main body 91 is inserted into the fixing portion 92 and fixed at a desired position, thereby taking an annular structure that can be wound around each electric wire 100. As the binding band 90, a well-known tie band can be used.

  A pair of insertion holes 73 through which the binding band 90 passes are formed through both ends of the front end portion of the second portion 62 in the width direction. Both insertion holes 73 are disposed at the same front and rear positions, penetrate through the second portion 62 so as to extend substantially straight in the vertical direction (height direction) (see FIG. 7), and both the inner and outer surfaces of the second portion 62. It is set as the form opened to rectangular slit shape at the both ends of the width direction. The binding band 90 is disposed between the insertion holes 73 while being in contact with the electric wires 100 in the second part 62 from above while being inserted into the insertion holes 73. It is placed across both insertion holes 73 while abutting on the outer surface (lower surface) from below.

  As shown in FIGS. 5 and 6, a pair of front and rear positioning walls 74 extending in the width direction are formed on the outer surface of the second portion 62 so as to protrude in the center in the width direction of the front end portion. As shown in FIG. 2, both positioning walls 74 are arranged to face each other in parallel with a distance corresponding to the front-rear width of the band main body 91 of the binding band 90. Between the positioning walls 74 on the outer surface of the second portion 62, a positioning portion 75 is formed along the front-rear direction, and the band main body 91 of the binding band 90 is accommodated in the positioning portion 75 in a positioned state. Yes.

Next, the operation of the connector 10 according to this embodiment will be described.
At the time of assembly, the rubber plug 200 and the terminal fitting 20 with the electric wire 100 are inserted into the cavities 34 of the housing body 31 from the rear. When the terminal fitting 20 is properly inserted into each cavity 34, each rubber plug 200 is brought into close contact with the inner peripheral surface of the cavity 34, and the rear end portion of each rubber plug 200 is slightly rearward from the rear surface of the housing body 31. Protrusively arranged. In this case, the rear end of the large rubber plug 220 is set to be located behind the rear end of the small rubber plug 210.

  Subsequently, the wire cover 60 is attached to the rear surface of the housing body 31. In the process of attachment, each cover-side lock piece 68 interferes with the lock protrusion 39 of each housing-side lock piece 38 and is bent and deformed outward, and when the attachment is completed, each housing-side lock piece 38 is elastically restored, The lock protrusion 39 is fitted into the lock hole 71. Thereby, each housing side lock piece 38 is latched by each cover side lock piece 68, and the electric wire cover 60 is attached and fixed to the housing 30 (refer FIG.1 and FIG.2).

  In the above case, each electric wire 100 is inserted into the accommodating space 66 of the first part 61 through the gap between the inner ends of the both side walls 65, and the rear part of the first part 61 is in the corrugated tube 50. In the inserted state, the corrugated tube 50 is inserted into the second portion 62 when attached. Each electric wire 100 accommodated in the first part 61 is bent from the rear end of the rubber plug 200 in the front-rear direction. In this case, each electric wire 100 is set so that the bending angle is larger as it is located at both ends in the width direction, and the wire 100 is arranged substantially straight along the front-rear direction at the center portion in the width direction.

  Before and after the above, the binding band 90 is attached to the front end portion of the second portion 62 of the wire cover 60. The band main body 91 of the binding band 90 is inserted into one of the insertion holes 73, faces the inside of the second part 62, and is wound around each electric wire 100 arranged in the second part 62 from the outside. It is made to contact so that it may stick. In this state, the winding front end portion of the band main body 91 is inserted into the other insertion hole 73 so as to face the outside of the second portion 62, and is inserted into the fixing portion 92 awaiting outside the second portion 62 so as to be tightened tightly. The Thereby, each electric wire 100 arrange | positioned in the 2nd part 62 is bound and fixed by the binding band 90, and the bending angle between the binding position and the rear surface side of the housing 30 is hold | maintained to predetermined value. For this reason, the electric wires 100 positioned at both ends in the width direction are not excessively bent toward the center in the width direction, and the rubber plug 200 is not excessively elastically deformed in the bending direction of the electric wires 100. As a result, it is avoided that there is a gap between each electric wire 100 and each rubber plug 200, and a predetermined sealing property by the rubber plug 200 is maintained. Further, the tape 400 is wound around the corrugated tube 50 and the second portion 62 at an appropriate timing, and the corrugated tube 50 is fixed to the second portion 62.

  As shown in FIG. 2, the band main body 91 is inserted into the positioning portion 75 of the second portion 62 while being positioned in the front-rear direction in the bound state. Further, in the bound state, the fixed portion 92 is disposed so as to be able to abut on the position facing the positioning walls 74 in the width direction (winding direction of the binding band 90) on the outer surface side of the second portion 62. For this reason, the moving range of the fixing portion 92 is limited between the other insertion hole 73 and the positioning walls 74, and the fixing portion 92 is prevented from excessively moving in the winding direction of the binding band 90.

  As described above, according to the present embodiment, since each electric wire 100 is bound and fixed by the binding band 90 in the second portion 62, the bending angle of each electric wire 100 in the first portion 61 is set to a predetermined angle. It is done. Therefore, the situation where each electric wire 100 is largely bent at a predetermined angle or more is prevented. In this case, although the rubber plug 200 is fitted to the front end portion of each electric wire 100 and the rubber plug 200 is accommodated in the housing 30, the bending angle of each electric wire 100 is changed by the binding band 90 as described above. Since the predetermined angle is set, the rubber plug 200 is not excessively elastically deformed, and a predetermined sealing property can be maintained.

  Further, since the insertion hole 73 through which the binding band 90 is passed is formed through the second portion 62, the binding position is prevented from being displaced. Further, since the binding band 90 is attached to the front end portion of the second portion 62, the bending angle of each electric wire 100 is reliably set to a predetermined angle in the first portion 61 from the rear surface of the housing 30 to the second portion 62. Determined. In addition, since the positioning portion 75 that restricts the attachment position of the binding band 90 from being displaced in the front-rear direction is formed on the outer surface of the second portion 62, it is more reliably prevented that the binding position is displaced. The

  The binding band 90 is formed by bulging a fixing portion 92 that holds the binding state, and the fixing portion 92 is disposed so as to be able to contact the positioning walls 74 in the winding direction of the binding band 90. Makes contact with both positioning walls 74, and further movement of the binding band 90 in the winding direction is prevented. Therefore, the binding band 90 is substantially positioned in the winding direction with respect to the second portion 62, and the binding reliability is further improved.

<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) The binding band only needs to be able to bind and fix each electric wire, and is not limited to the above-described form.
(2) The insertion hole can be omitted. In that case, for example, a notch may be formed in the upper end portion of the second portion, and a binding band may be inserted into the notch.
(3) It is possible to omit the positioning wall. In that case, for example, only the positioning portion may be formed in the outer surface of the second portion.
(4) The binding band may be attached not only to the front end of the second part but also to the rear end.
(5) The corrugated tube can be omitted.

DESCRIPTION OF SYMBOLS 10 ... Connector 20 ... Terminal metal fitting 30 ... Housing 60 ... Electric wire cover 61 ... 1st part 62 ... 2nd part 73 ... Insertion hole 74 ... Positioning wall 75 ... Positioning part 90 ... Binding band 92 ... Fixing part 100 ... Electric wire 200 ... Rubber plug

Claims (6)

A plurality of terminal fittings connected to the end of the wire;
A housing in which each terminal fitting is accommodated and a plurality of electric wires are drawn from the rear surface;
A first portion that is attached to the housing, extends from the rear surface side of the housing toward the rear side while being narrowed, and is accommodated so that each electric wire is bent and extended toward the rear surface side of the housing; And an electric wire cover that has a second part that extends rearward from the rear end of the first part and accommodates the electric wires on the inside.
A connector, comprising: a binding band attached to the second part and binding and fixing the electric wires accommodated in the second part.   The connector according to claim 1, wherein a rubber plug is fitted to a front end portion of each electric wire, and the rubber plug is accommodated in the housing.   The connector according to claim 1, wherein an insertion hole through which the binding band is passed is formed in the second part.   The connector according to claim 1, wherein the binding band is attached to a front end portion of the second portion.   The positioning part which controls that the attachment position of the said binding band is displaced in the front-back direction is formed in the outer surface of the said 2nd part, The Claim 1 characterized by the above-mentioned. connector.   A pair of positioning walls extending in the width direction are formed on the outer surface of the second part so as to protrude from each other, and both front and rear ends of the positioning part are defined by the positioning walls, and the binding band. 6. The fixed portion for holding the binding state is formed to bulge, and the fixed portion is disposed so as to be able to contact the positioning walls in the winding direction of the binding band. Connector.

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