JP5488144B2 - connector - Google Patents

Description

  The present invention relates to a connector.

A conventional connector is disclosed in Patent Document 1. This includes a housing and a cover attached to the rear end of the housing. A terminal fitting connected to the end of the electric wire is inserted into the housing, and the electric wire is drawn out from the rear end of the housing. The rear end portion of the housing has an electric wire introduction groove extending in a direction orthogonal to the electric wire drawing direction.
The electric wire is bent in the lead-out direction in advance and is pressed by the cover as the cover is attached and bent deeply at a substantially right angle, and the portion ahead of the bent portion is inserted into the electric wire introduction groove. ing.

JP-A-9-199220

  By the way, in the case of the conventional connector described above, in order to lead out the electric wire, it is necessary to bend the electric wire in advance and attach a cover to the rear end portion of the housing. For this reason, work man-hours increase and there exists a situation that work efficiency is not necessarily good.

  The present invention has been completed based on the above-described circumstances, and an object thereof is to improve workability at the time of drawing out an electric wire.

As means for achieving the above object, the invention of claim 1 comprises a housing and an electric wire drawn from the rear end of the housing, and a plurality of partition walls are formed at the rear end of the housing. And an electric wire introduction groove is held between the partition walls, the electric wire introduction groove is opened at least in the rear and in the electric wire lead-out direction intersecting therewith, and the drawn out electric wire is bent, from the bent portion. The front part is a connector that is inserted into the wire introduction groove and is directed in the wire lead-out direction, and an edge portion of the wire introduction groove has the wire in the wire introduction groove. There the process of being inserted are resiliently deformed into the wire introducing groove by interference with the wire, the wire is elastically restored along with being inserted into the wire introducing groove, the wire introduction to the wire Elastic piece that is contactable is formed from the rear of the electric wire in a state of restricting the exit from, the characterized in that forms a cross-section substantially L-shaped or substantially T-shaped with said elastic piece and the partition wall Have.

  The invention of claim 2 is characterized in that the outlet of the wire introduction groove is arranged at a position ahead of the position of the rearmost end in the housing.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, a plurality of the wire introduction grooves are formed in the housing, and the elastic piece projects in a direction to close the rear of the wire introduction groove. And a plurality of each of the elastic pieces is formed corresponding to each of the wire introduction grooves, and a part of each of the elastic pieces is projected toward one side, and the other part is directed toward the other side. It is characterized by a form that projects.

  According to a fourth aspect of the present invention, in the third aspect, the elastic piece has a guide surface that is inclined along an insertion direction of the electric wire into the electric wire introduction groove, and the electric wire and the electric wire introduction. It is characterized in that it has a locking surface that is opposed in the direction of coming out from the groove, and that it projects from the rear end edge of the partition wall that partitions between the adjacent wire introduction grooves toward both sides. Have.

<Invention of Claim 1>
In the process of inserting the electric wire into the electric wire introduction groove, the elastic piece bends and deforms, so that the electric wire is allowed to be inserted into the electric wire introduction groove, and when the electric wire is inserted into the electric wire introduction groove, the elastic piece is elastically restored. The elastic piece restricts the wire from coming out of the wire insertion groove. For this reason, the electric wire is inserted into the electric wire introduction groove in one motion, and the workability when the electric wire is led out is greatly improved.

<Invention of Claim 2>
Since the outlet of the wire introduction groove is arranged at a position ahead of the position of the rearmost end in the housing, it is avoided that the electric wire protrudes rearward from the rearmost end of the housing, and the front and rear length of the connector is prevented from becoming longer. Is done. In this case, if the cover is not attached to the rear end of the housing, the longitudinal length of the connector is further shortened.

<Invention of Claim 3>
Among the elastic pieces, some are configured to protrude toward one side, and other portions are configured to protrude toward the other side, so when the electric wire is swung to one side The elastic piece that protrudes toward the other side deepens the locking margin with the electric wire, and when the electric wire is swung to the other side, the elastic piece that protrudes toward the one side increases the locking margin with the electric wire. Can deepen. Therefore, even if the electric wire is swung to either side, it is possible to prevent the locking margin of the elastic piece with respect to the electric wire from decreasing.

<Invention of Claim 4>
Since the elastic piece has a guide surface that is inclined along the insertion direction of the electric wire into the electric wire introduction groove, the insertion operation of the electric wire into the electric wire introduction groove is smoothly performed. In addition, the elastic piece has a locking surface that faces the electric wire in the direction in which the electric wire is introduced from the electric wire introduction groove, and protrudes toward both sides from the rear edge of the partition wall that partitions the adjacent electric wire introduction groove. Therefore, the exit of the electric wire from the electric wire introduction groove is reliably regulated.

It is a rear view of the connector which concerns on Embodiment 1 of this invention. It is XX sectional drawing of FIG. It is a partially broken side view of a connector. It is a partially broken rear view of a connector. FIG. 6 is a cross-sectional view of a main part of a connector according to a second embodiment. 10 is an enlarged cross-sectional view of a main part of a connector according to Embodiment 3. FIG.

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. The connector 10 according to the first embodiment includes a housing 20, a terminal fitting 80, and an electric wire 90.

  The housing 20 is made of synthetic resin and has a flat rectangular block shape as a whole as shown in FIGS. A plurality of cavities 21 are formed in a row in the housing 20 in the width direction. A terminal fitting 80 is inserted in each cavity 21 along the front-rear direction. The terminal fitting 80 is connected to the terminal portion of the electric wire 90 by caulking. Further, a bendable lock arm 22 is formed on the upper surface of the housing 20 so as to extend in the front-rear direction. The lock arm 22 plays a role of holding both housings in a fitted state by elastically locking a mating housing (not shown). Further, a pair of restricting pieces 23 protrude from the rear end portion of the upper surface of the housing 20. Since both side edges of the rear end of the lock arm 22 are in contact with both restricting pieces 23, the lock arm 22 is prevented from rolling up.

  A plurality of partition walls 24 are formed in parallel in the width direction at the rear end portion of the housing 20, and an electric wire introduction groove 25 is held between the partition walls 24. Each partition wall 24 is arranged along the vertical direction (height direction) and is configured to be continuous with the partition walls that partition between adjacent cavities 21.

  The wire introduction groove 25 communicates with the cavity 21 and extends in the vertical direction. The wire introduction groove 25 is partitioned from each other by the partition walls 24 and closed on both sides by the side walls 26 of the housing 20. The upper portion of the housing 20 is closed upward. In other words, the electric wire introduction groove 25 is opened in two directions, rearward and downward. In this case, as shown in FIG. 1, an electric wire outlet 28 through which the electric wire 90 is drawn out from the cavity 21 is opened on the entrance side, which is a substantially upper half portion of the electric wire introduction groove 25, and a substantially lower half of the electric wire introduction groove 25. A wire outlet port 29 through which the electric wire 90 is led out from the housing 20 is opened on the outlet side as a part. The wire lead-out port 29 is opened downward in the wire lead-out direction, and is disposed at a position that is in front of the rearmost end position in the housing 20.

  An enclosing wall 31 that closes the front and both sides on the outlet side (lower end side) of the wire introduction groove 25 is formed to protrude from the rear end portion of the lower surface of the housing 20. The surrounding wall 31 is in the form of a frame opened rearward.

  Now, a claw-like elastic piece 32 is formed at the rear end edge of each partition wall 24, which is an edge of the electric wire introduction groove 25, and the rear part of the electric wire introduction groove 25 is partially formed by each elastic piece. It is closed. Each elastic piece 32 has a rectangular plate shape and is substantially L-shaped in cross section with the partition wall 24 as a whole, and can be bent and deformed with a connecting portion of the partition wall 24 as a fulcrum. In the case of the present embodiment, the protruding direction of each elastic piece 32 is directed to one side (right side in the drawing). The space between the projecting end of each elastic piece 32 and the partition wall 24 facing this is an opening width smaller than the diameter of the electric wire 90, and the front end surface of each elastic piece 32 and the electric wire introduction groove 25 facing this. The distance between the bottom surface and the bottom surface of the wire 90 is almost the same as the diameter of the electric wire 90.

Next, in the connector 10 according to the present embodiment, a working method when the electric wire is led out will be described.
A terminal fitting 80 with an electric wire 90 is inserted into each cavity 21 of the housing 20. When all the terminal fittings 80 are inserted, the electric wires 90 are pulled out in parallel from the rear end portion of the housing 20.

  Subsequently, a portion of the drawn wire 90 behind the wire outlet 28 is bent at a substantially right angle toward the wire lead-out direction, and a portion ahead of the bent portion of the wire 90 is placed in the wire introduction groove 25. insert. In the process of insertion, the elastic piece 32 is bent and deformed in the wire introduction groove 25 due to interference with the wire 90. When the electric wire 90 is properly inserted into the electric wire introduction groove 25, the interference state between the elastic piece 32 and the electric wire 90 is released, and the elastic piece 32 is elastically restored toward the original state. Then, as shown in FIG.2 and FIG.3, the elastic piece 32 is arrange | positioned with respect to the electric wire 90 so that it can contact | abut from the back. Thereby, the electric wire 90 is hold | maintained in the electric wire introduction groove | channel 25 in the state of retaining.

  As described above, according to the present embodiment, since the electric wire 90 is inserted into the electric wire introduction groove 25 with one motion with a good feeling of moderation, the workability when the electric wire is led out is greatly improved. In particular, in the case of the present embodiment, since a cover for forcibly bending the electric wire 90 is not required, the configuration can be simplified and the number of parts can be reduced.

  Further, since the electric wire outlet 29 is arranged at a position in front of the rearmost end position in the housing 20, the electric wire 90 does not protrude rearward from the rear end portion of the housing 20. Longer lengths are prevented. In this case, since the cover is omitted, the longitudinal length of the connector 10 is further shortened.

<Embodiment 2>
Next, Embodiment 2 of the present invention will be described with reference to FIG. In the second embodiment, the protruding direction of the elastic pieces 32A and 32B is different from that of the first embodiment. However, since the others are the same as those of the first embodiment, the illustration of the portions excluding the elastic pieces 32A and 32B and their peripheral portions is omitted.

  The elastic pieces are a first elastic piece 32A that protrudes from the rear end edge of each partition wall 24 toward one side (right side in the figure), and the other side (from the illustration) from the rear end edge of each partition wall 24. And a second elastic piece 32B projecting toward the left side. That is, the first and second elastic pieces 32A and 32B are configured so that the protruding directions are different from each other. Specifically, the first elastic piece 32A is formed on each partition wall 24 on one side in the width direction, and the second elastic piece 32B is formed on each partition wall 24 on the other side in the width direction. The partition wall 24 at the center in the width direction has both the first and second elastic pieces 32A and 32B, and has a substantially T-shaped cross section together with both the first and second elastic pieces 32A and 32B. . On the other hand, the partition walls 24 on both sides in the width direction have a substantially L-shaped cross section together with any of the first and second elastic pieces 32A and 32B.

  According to the second embodiment, a part of the elastic piece is the first elastic piece 32A protruding toward one side, and the other part of the elastic piece is the second elastic piece 32B protruding toward the other side. Therefore, if the derived wire 90 is swung to one side, the second elastic piece 32B deepens the locking margin with the wire 90, and the led wire 90 is swung to the other side. In this case, the first elastic piece 32A can deepen the locking margin with the electric wire 90. Therefore, even if the electric wire 90 is swung to either side, it is possible to prevent the locking margin of the elastic pieces 32A and 32B with respect to the electric wire 90 from decreasing.

<Embodiment 3>
FIG. 6 shows Embodiment 3 of the present invention. In the third embodiment, the form of the elastic piece 32E is different from that of the first embodiment. However, since the other parts are the same as those in the first embodiment, the illustration of the elastic piece 32E and the parts other than the peripheral part is omitted.

  The elastic piece 32 </ b> E is configured to protrude from the rear end edge of the partition wall 24 to both sides, and has a substantially T-shaped cross section together with the partition wall 24. The rear end surface of the elastic piece 32E is a guide surface 38 that is inclined in a taper shape along the insertion direction of the electric wire 90 into the electric wire introduction groove 25, and the front end surface of the elastic piece 32E is an electric wire with respect to the electric wire 90. The engaging surface 39 is opposed in the direction of removal from the introduction groove 25. The locking surface 39 has a curved surface shape substantially along the outer peripheral surface of the electric wire 90. Since the locking surface 39 is curved, the thickness of the base portion of the elastic piece 32E (the connection portion with the partition wall 24) is increased.

  According to the third embodiment, since the elastic piece 32E has the guide surface 38, the insertion operation of the electric wire 90 into the electric wire introduction groove 25 is smoothly performed. Further, the elastic piece 32E has a locking surface 39 that opposes the direction in which the electric wire 90 is pulled out from the electric wire introduction groove 25, and projects from the rear end edge of the partition wall 24 toward both sides. In this case, the wire 90 is reliably restricted from coming out of the wire introduction groove 25. In particular, since the locking surface 39 is curved, the thickness of the base portion of the elastic piece 32E is increased, and the locking strength for the electric wire 90 is further increased.

<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 present invention never denies the configuration in which the cover is attached to the rear end of the housing.
(2) While the elastic piece is always kept in a non-contact state with respect to the electric wire inserted into the electric wire introduction groove, the elastic piece comes into contact with the electric wire when the electric wire is shaken in the direction of coming out of the electric wire introduction groove. In this case, it is possible to regulate the withdrawal of the electric wire.
(3) The electric wire may be bent in a crossing direction without being orthogonal to the front-rear direction.
(4) The wire introduction groove may be opened rearward and in two directions intersecting therewith.

DESCRIPTION OF SYMBOLS 10 ... Connector 20 ... Housing 24 ... Partition wall 25 ... Electric wire introduction groove 32, 32A, 32B, 32E ... Elastic piece 38 ... Guide surface 39 ... Locking surface 80 ... Terminal metal fitting 90 ... Electric wire

Claims (4)

A housing, and an electric wire drawn from the rear end of the housing,
A plurality of partition walls are formed at the rear end portion of the housing, and between each partition wall, an electric wire introduction groove is held, and the electric wire introduction groove is opened at least in the rear and in the electric wire lead-out direction intersecting therewith,
The drawn-out electric wire is bent, and a portion ahead of the bent portion is inserted into the electric wire introduction groove and directed in the electric wire outlet direction,
In the process of inserting the electric wire into the electric wire introduction groove, the electric wire introduction groove is bent and deformed into the electric wire introduction groove due to interference with the electric wire, and the electric wire is inserted into the electric wire introduction groove. elastically restored along with being inserted, the elastic piece being contactable from the rear of the electric wire in a state of restricting the exit from the wire introduction groove against the wire is formed, said partition and said resilient piece A connector having a substantially L-shaped or T-shaped cross section with a wall .   The connector according to claim 1, wherein an outlet of the electric wire introduction groove is disposed at a position ahead of a position of a rearmost end in the housing. A plurality of the wire introduction grooves are formed in the housing;
The elastic piece is in a form protruding in a direction to close the rear of the wire introduction groove, and a plurality of the elastic pieces are formed corresponding to each of the wire introduction grooves,
3. A part of each of the elastic pieces is configured to project toward one side, and the other part is configured to project toward the other side. Connector.   The elastic piece has a guide surface that is inclined along the insertion direction of the electric wire into the electric wire introduction groove, and has a locking surface that is opposed to the electric wire in the direction of removal from the electric wire introduction groove, and The connector according to claim 3, wherein the connector projects from the rear end edge of the partition wall partitioning between the adjacent wire introduction grooves toward both sides.

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