JP4475142B2 - Connector and wire cover - Google Patents

Description

  The present invention relates to a connector and an electric wire cover.

In the case where the electric wire led out from the back surface of the housing is bent and wired, an electric wire cover is used. As an example, as shown in FIG. 6, the electric wire cover is composed of a pair of halves 101A and 101B. There is an electric wire cover 100 having an L shape in which the halves 101A and 101B are combined. As a means for holding the two halves 101A and 101B in a combined state in this type of electric wire cover 100, one half 101A is formed with a locking piece 103A protruding toward the other half 101B, It is possible to adopt a structure in which both the halves 101A and 101B are locked so as not to be detached by forming the lock protrusion 103B on the outer surface of the other half 101B and engaging the lock piece 103A with the lock protrusion 103B. It is.
In addition, as an L-shaped electric wire cover for combining two halves, there is one disclosed in Patent Document 1 or the like.
JP 2004-350342 A

When assembling the electric wire cover 100 to the housing 110, first, with one half 101A attached to the housing 110, as shown in FIG. 7, the electric wire 102 is placed in the one half 101A. It accommodates in the bent state, and after that, the other half body 101B is united with one half body 101A.
In this case, in a state before the other half body 101B is united, the electric wire 102 bent in one half body 101A tries to return to a straight state, so as shown in FIG. There is a possibility that a part of the bent portion 104 protrudes outside the half body 101A.
The inner bent portion 104 is disposed almost directly below the lock piece 103A and is hidden behind the housing 110, so that it is difficult to visually confirm the state in which the electric wire 102 protrudes from above. It is. Therefore, with the electric wire 102 protruding from the inner bent portion 104 to the outside of the half-divided body 101A, the other half-divided body 101B is merged, and the electric wire 102 is sandwiched between both the half-divided bodies 101A and 101B. There is a risk of it.
This invention is completed based on the above situations, Comprising: It aims at preventing an electric wire being pinched | interposed between halves.

According to the first aspect of the present invention, an electric wire cover having a shape in which two first and second halves each having a substantially L shape are combined in a cylindrical shape is attached to a lead-out end portion of the electric wire in the housing, and the electric wire is led out from the housing. In the connector, the electric wire is bent and accommodated in the electric wire cover, wherein the first half and the second half are formed separately from each other, and the first half is formed. The split body is provided with a locking portion that can be locked to a mounting portion provided at the lead-out end portion of the electric wire of the housing, and the first half split body is assembled to the housing and then led out from the housing. And the second half is merged with the first half and the inner side of the first half is separated. a vicinity of the bent portion, and before sandwiching the bent portion of the inner The position of the far side from the housing, while the locking piece projecting into the second half side from the junction surface between the second half body is formed, the lock portion is formed in the second halves The first and second halves are locked in a united state by the locking piece being engaged with the locking portion. It is arranged near the inner bent portion and on the side near the housing on the opposite side of the lock piece across the inner bent portion, and is approximately the same size as the lock piece to the second halved body side. A protruding guide part is formed, and the guide part is characterized in that it extends from the end face of the lead-out end part of the electric wire in the housing to the inner bent part along the lead-out direction of the electric wire. .

According to a second aspect of the invention, in the invention of claim 1, characterized in that the gap dimension of the lock side of the end portion and the locking piece definitive the guide portion is smaller than the outer diameter of the electric wire Have

The invention according to claim 3 is a form in which the first and second halves that are substantially L-shaped are combined into a cylindrical shape, and attached to the lead-out end of the electric wire in the housing, thereby An electric wire cover that accommodates the lead-out electric wire in a bent state, wherein the first half and the second half are formed separately from each other, and the first half Is provided with a locking portion that can be locked to a mounting portion provided at a lead-out end portion of the electric wire of the housing, and the electric wire led out from the housing after the first half is assembled to the housing. The second half body is accommodated in the first half body, and the second half body is joined to the first half body. a proximity and the housing across the bent portion of the inner The al far side position, while the lock piece is formed projecting from the joint surface between the second halves to the second half side, the locking portion in the second half body is formed, When the lock piece is engaged with the lock portion, the first half body and the second half body are locked in a combined state. It is arranged near the inner bent portion and on the opposite side to the housing on the opposite side to the lock piece with the inner bent portion interposed therebetween, and protrudes by approximately the same dimension as the lock piece to the second halved body side. The guide portion is characterized in that the guide portion extends from the end surface of the lead-out end portion of the electric wire in the housing along the lead-out direction of the electric wire from the inner bent portion .

The invention of claim 4 is the invention of claim 3, characterized in that the gap dimension of the lock side of the end portion and the locking piece definitive the guide portion is smaller than the outer diameter of the electric wire Have

<Invention of Claims 1 and 3>
Even if the electric wire accommodated in the bent state in the first half is in contact with the guide portion and the lock piece even if it is going to return to the straight state, the electric wire protrudes from the inner bent portion to the outside of the first half. There is nothing. Even if a part of the wire comes off the guide part and protrudes outside the first halved body, the protruding wire is also disconnected from the lock piece. can do. Therefore, there is no possibility that both halves are united with a part of the electric wire protruding from the inside bent part to the outside of the first half, and the electric wire is sandwiched between both halves. Can be prevented.
Since the guide portion is formed from the end surface of the lead-out end portion of the electric wire in the housing to the inner bent portion, there is no possibility that a part of the electric wire protrudes from the inner bent portion between the lock piece and the guide portion. The protrusion of the electric wire to the outside of the first half is reliably prevented.

<Invention of Claims 2 and 4>
It is more reliably prevented that Lock portion of the wire between the click piece and the guide part protrudes.

<Embodiment 1>
A first embodiment embodying the present invention will be described below with reference to FIGS. The connector according to the present embodiment includes a housing 10 in which a plurality of terminal fittings (not shown) are accommodated, and an electric wire assembled to the rear end portion 10R of the housing 10 (the leading end portion of the electric wire 11 which is a constituent element of the present invention). And a cover 20.
The housing 10 is made of synthetic resin and has a rectangular block shape as a whole. From the rear end surface of the housing 10, the electric wires 11 fixed to the respective terminal fittings are led out rearward. A pair of left and right mounting portions 12 for locking the electric wire cover 20 is formed at the rear end portion of the housing 10.

  The electric wire cover 20 is composed of a synthetic resin first half 21A that is generally L-shaped and a synthetic resin second half 21B that is generally L-shaped. It has a letter shape. In the following description of the structure of the halves 21A and 21B, the front, rear, left and right and up and down directions are based on the state in which the halves 21A and 21B are combined.

  The first halved body 21A includes a first upper surface plate 23A, a first lower surface plate 24A, a first front surface plate 25A, and a first rear surface plate 26A leftward from a first side surface plate 22A that is generally L-shaped when viewed from the side. It is the form extended to the direction. The first front half plate portion 27A is constituted by the substantially front half region of the first side plate 22A, the first top plate 23A, and the first bottom plate 24A, and the substantially second half region of the first side plate 22A and the first front plate 25A. The first vertical half cylinder portion 28A is constituted by the first rear plate 26A. The projecting end surfaces of the first lower surface plate 24A, the first front surface plate 25A, and the first rear surface plate 26A form a first bonding surface 29A (a bonding surface that is a constituent feature of the present invention).

  The rear end edge of the first upper surface plate 23A and the lower end edge of the first front plate 25A are connected at a substantially right angle, and the portion connected at a substantially right angle is the first inner bent portion 30A (the inner side which is a constituent element of the present invention). Bend part). The rear end edge of the first lower surface plate 24A and the lower end edge of the first rear surface plate 26A are connected in a substantially quadrangular arc shape, and the portion connected in the substantially quarter arc shape is a first outer bent portion 31A. A first lock piece 32A (a lock piece which is a constituent feature of the present invention) is formed in a substantially lower half region of the first front plate 25A. The first lock piece 32A extends along the outer surface (front surface) of the first front plate 25A to the left (on the second half 21B side in the combined state) from the first joint surface 29A. It has a rectangular plate shape substantially parallel to 25A and has a first lock hole 33A. The rear end edge portion of the first lock piece 32A is located at the first inner bent portion 30A.

  On the other hand, a guide portion 35A is formed on the first upper surface plate 23A. The guide portion 35A is formed by extending the extending edge of the first upper surface plate 23A to be flush with the first upper surface plate 23A and to the left of the first joint surface 29A. Form a plate. In the left-right direction, the protruding end surface of the guide portion 35A and the protruding end surface of the first lock piece 32A are arranged at substantially the same position. Specifically, the extending end surface of the first lock piece 32A is positioned slightly to the left (projecting end side) with respect to the extending end surface of the guide portion 35A (see FIG. 4). That is, the projecting dimension of the first lock piece 32A from the first joining surface 29A and the projecting dimension to the left of the guide portion 35A with respect to the first joining surface 29A are substantially the same dimension. The guide portion 35A is formed over the entire area of the first upper surface plate 23A in the front-rear direction, and the rear end edge of the guide portion 35A overlaps with the first inner bent portion 30A and the first front It arrange | positions so that it may be located under the faceplate 25A. In other words, the guide portion 35A is formed over a region including the first inner bent portion 30A.

  Further, the first rear plate 26A and the first lower surface plate 24A are also formed with a second lock piece 36A and a third lock piece 37A similar to the first lock piece 32A. Further, a first locking portion 38A for locking the first half 21A to the housing 10 is formed at the front end edge of the first side plate 22A. A plurality of fitting ribs 39A having a semicircular arc shape and a plurality of fitting grooves 40A are alternately formed on the inner periphery of the substantially upper half portion of the first vertical half cylinder portion 28A.

  The second halved body 21B has a second upper surface plate 23B, a second lower surface plate 24B, a second front surface plate 25B, and a second rear surface plate 26B rightward from the second side surface plate 22B that is substantially L-shaped when viewed from the side. It is the form extended to the direction. The second horizontal half cylinder portion 27B is configured by the substantially front half region of the second side plate 22B, the second upper surface plate 23B, and the second lower surface plate 24B, and the substantially second half region of the second side plate 22B and the second front plate 25B. A second vertical half cylinder portion 28B is constituted by the second rear plate 26B. The protruding end surfaces of the second lower surface plate 24B, the second front surface plate 25B, and the second rear surface plate 26B serve as a second bonding surface 29B.

  The rear end edge of the second upper surface plate 23B and the lower end edge of the second front plate 25B are connected at a substantially right angle, and the portion connected to the substantially right angle is a second inner bent portion 30B. The rear end edge of the second lower surface plate 24B and the lower end edge of the second rear surface plate 26B are connected in a substantially quadrangular arc shape, and the portion continuous in the substantially quarter arc shape is a second outer bent portion 31B. In a substantially lower half region on the outer surface (front surface) of the second front plate 25B, a first lock protrusion 32B that fits into the first lock hole 33A of the first lock piece 32A in a state where both halves 21A and 21B are combined. (The lock portion which is a constituent requirement of the present invention) is formed. Further, a cutout portion 35B is formed in the second upper surface plate 23B. The notch 35B is formed in order to avoid interference with the guide part 35A when the first half 21A and the second half 21B are combined, and the formation region of the notch 35B in the front-rear direction is It extends over the entire area of the second upper surface plate 23B so as to correspond to the guide portion 35A.

  A second lock projection (not shown) and a third lock projection (not shown) similar to the first lock projection 32B are also formed on the second rear plate 26B and the second lower plate 24B. Furthermore, the 2nd latching | locking part 38B for latching the 2nd half body 21B to the housing 10 is formed in the front-end edge of the 2nd side plate 22B. A plurality of fitting ribs 39B and a plurality of fitting grooves 40B having a semicircular arc shape are alternately formed on the inner periphery of the substantially upper half portion of the second vertical half cylinder portion 28B.

Next, the operation of this embodiment will be described.
When the electric wire cover 20 is assembled to the housing 10, first, the corrugated tube 42 is preliminarily fitted in advance so as to collectively surround the plurality of electric wires 11 led out from the rear end portion 10 </ b> R of the housing 10. In this state, the first half 21A is assembled to the rear end of the housing 10 from the right side, and the first locking portion 38A is locked to the mounting portion 12. Next, the end portion of the corrugated tube 42 is fitted into the fitting ribs 39A and 39B and the fitting grooves 40A and 40B of the first vertical half cylinder portion 28A.

  A portion of the electric wire 11 exposed between the rear end surface of the housing 10 and the corrugated tube 42 is bent into a substantially L shape so that the first half half cylinder portion 27A of the first half 21A and the first half 1 It fits in the vertical half cylinder part 28A. At this time, between the rear end surface of the housing 10 and the first lock piece 32A (first front plate 25A), the first upper surface plate 23A is in a downwardly depressed form, and is in the first horizontal half cylinder portion 27A. The state of the accommodated electric wire 11, that is, whether or not the electric wire 11 protrudes outside the first upper surface plate 23A (in other words, the electric wire 11 protrudes at the first inner bent portion 30A located almost directly below the first lock piece 32A. It is difficult to visually confirm whether or not) from above. However, in the present embodiment, since the guide portion 35A in the form in which the first upper surface plate 23A is extended to the left is provided, there is no possibility that the electric wire 11 protrudes further to the left from the extending end of the guide portion 35A. 11 can be surely stored in the first half 21A, and it is not necessary to make a visual check.

  Further, since the guide portion 35A is formed over a region including the first inner bent portion 30A that is a boundary between the first upper surface plate 23A and the first front plate 25A, the guide portion 35A and the rear end edge of the guide portion 35A The gap between the lower end edge of one lock piece 32A is small, and the dimension of the gap is smaller than the outer diameter of the electric wire 11 (see FIG. 3). Therefore, there is no possibility that the electric wire 11 protrudes upward from the first horizontal half-cylinder portion 27A in the gap between the guide portion 35A and the first lock piece 32A, that is, the first inner bent portion 30A.

  In the present embodiment, the dimension from the first joining surface 29A to the extending end edge (left end edge) of the guide portion 35A is the same as the extending end edge (left end edge) of the first lock piece 32A from the first joining surface 29A. Therefore, even if the electric wire 11 protrudes further to the left than the extended end edge of the guide portion 35A, the electric wire 11 protrudes from the first lock piece 32A. It becomes a state. Therefore, when viewed from above, the protruding state of the electric wire 11 can be easily confirmed visually, and the electric wire 11 may remain protruding outside the first half body 21A at the first inner bent portion 30A. There is no.

  Thereafter, the second half 21B is combined with the first half 21A from the left side, and the second locking portion 38B of the second half 21B is attached to the housing 10. Lock to the part 12. At the time of uniting, the electric wires 11 in the first half 21A are not protruded outside the first half 21A at the first bent portion as described above. There is no risk of being caught (pinched) between the halves 21A and 21B.

  When both the halves 21A and 21B reach the normal combined state, the first joint surface 29A of the first half 21A and the second joint surface 29B of the second half 21B abut against each other so as to be substantially in surface contact with each other. The extended end surface of the guide portion 35A hits the left inner surface of the cutout portion 35B of the second half 21B. In addition, the first lock piece 32A, the second lock piece 36A, and the third lock piece 37A are in contact with or approaching the outer surface of the second half 21B, and overlap each other. The second locking protrusion and the third locking protrusion are fitted. By the locking of the lock pieces 32A, 36A, 37A and the lock protrusion 32B, the relative displacement in the direction of separating the left and right halves 21A, 21B, and the direction perpendicular to the combined direction of the halves 21A, 21B. The relative displacement in the direction (vertical and longitudinal directions) is restricted, and both halves 21A and 21B are locked in the combined state. As described above, the cylindrical wire cover 20 that collectively surrounds the plurality of wires 11 led out from the housing 10 is configured. Inside the wire cover 20, the wires 11 led out horizontally from the housing 10 are upward. The wire is bent at a substantially right angle to the wire cover 20 and led out upward from the wire cover 20.

  As described above, in the present embodiment, even when the electric wire 11 accommodated in the bent state in the first half 21A comes into contact with the guide portion 35A and the first lock piece 32A even when trying to return to the straight state, The electric wire 11 does not protrude from the first inner bent portion 30A to the outside of the first half 21A. Even if a part of the electric wire 11 is detached from the guide portion 35A and protrudes outside the first half 21A, the protruding electric wire 11 is also disconnected from the first lock piece 32A. Can be reliably grasped visually. Therefore, there is no possibility that the halves 21A and 21B are united with each other while a part of the electric wire 11 protrudes from the first inner bent portion 30A to the outside of the first halved body 21A. It is possible to prevent the electric wire 11 from being sandwiched between the bodies 21A and 21B.

  In the present embodiment, as shown in FIGS. 4 and 5, the protruding region of the guide portion 35 </ b> A is in a range corresponding to the lead-out region of the electric wire 11 in the housing 10 in the protruding direction (left-right direction) of the guide portion 35 </ b> A. Therefore, it is possible to reliably prevent the electric wire 11 from coming off the guide portion 35A and protruding outside the first half body 21A.

<Other embodiments>
The present invention is not limited to the embodiment 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, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
(1) In the above-described embodiment, the notched portion for avoiding interference with the guide portion is formed in the second half-divided body. However, according to the present invention, such a notched portion is not formed, and both halves are combined. In this state, the guide portion may overlap the inner surface of the second halved body .

The perspective view showing the state which isolate | separated the half body of this embodiment The perspective view showing the state which accommodated the electric wire in the 1st half body attached to the housing The side view showing the state which accommodated the electric wire in the 1st half body attached to the housing Front view showing the state where both halves are combined A plan view showing a state in which both halves are combined and attached to the housing The perspective view showing the state which separated the half body of the prior art example Side view showing the state in which the electric wires are housed in the halves in the conventional example

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Housing 11 ... Electric wire 20 ... Electric wire cover 21A ... 1st half body 21B ... 2nd half body 29A ... 1st junction surface (joint surface)
30A ... 1st inner side bending part (inner side bending part)
32A ... 1st lock piece (lock piece)
32B ... 1st lock protrusion (lock part)
35A ... Guide part

Claims (4)

An electric wire cover in which the first and second half halves having a substantially L shape are combined in a cylindrical shape is attached to the lead-out end portion of the electric wire in the housing, and the electric wire led out from the housing is bent. A connector that is accommodated in the wire cover in a state,
The first half and the second half are formed separately from each other,
The first half body is provided with a locking portion that can be locked to a mounting portion provided at a lead-out end portion of the electric wire of the housing, and the first half body is assembled after the first half body is assembled to the housing. The electric wire led out from the housing is accommodated in the first half body, and then the second half body is united with the first half body,
In the vicinity of the inner bent portion in the first half body and on the side farther from the housing with the inner bent portion sandwiched, the second half portion from the joint surface with the second half body. While a lock piece protruding toward the half body is formed, a lock portion is formed in the second half body, and the lock piece is engaged with the lock portion, so that the first half body and the The second half is locked in the combined state,
The first half is arranged near the inner bent portion and on the side closer to the housing on the opposite side of the lock piece across the inner bent portion. A guide portion is formed that protrudes by substantially the same dimension as the lock piece,
And the said guide part is extended and formed along the derivation | leading-out direction of an electric wire from the end surface of the derivation | leading-out part of the electric wire in the said housing to the said inside bending part . Connector according to claim 1, wherein the gap dimension of the lock side of the end portion and the locking piece definitive the guide portion is smaller than the outer diameter of the electric wire. The first and second halves that are substantially L-shaped are combined into a cylindrical shape, and are attached to the lead-out end of the electric wire in the housing, so that the electric wire led out from the housing is bent. An electric wire cover adapted to be accommodated in a
The first half and the second half are formed separately from each other,
The first half body is provided with a locking portion that can be locked to a mounting portion provided at a lead-out end portion of the electric wire of the housing, and the first half body is assembled after the first half body is assembled to the housing. The electric wire led out from the housing is accommodated in the first half body, and then the second half body is united with the first half body,
In the vicinity of the inner bent portion in the first half body and on the side farther from the housing with the inner bent portion sandwiched, the second half portion from the joint surface with the second half body. While a lock piece protruding toward the half body is formed, a lock portion is formed in the second half body, and the lock piece is engaged with the lock portion, so that the first half body and the The second half is locked in the combined state,
The first half is arranged near the inner bent portion and on the side closer to the housing on the opposite side of the lock piece across the inner bent portion. A guide portion is formed that protrudes by substantially the same dimension as the lock piece,
And the said guide part is extended and formed along the derivation | leading-out direction of an electric wire from the end surface of the derivation | leading-out part of the electric wire in the said housing to the said inside bending part, The electric wire cover characterized by the above-mentioned. Wire cover according to claim 3, characterized in that the gap dimension of the lock side of the end portion and the locking piece definitive the guide portion is smaller than the outer diameter of the electric wire.

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