JP2011090880A - Mounting structure of electric wire cover - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable to certainly prevent coming off of an electric wire cover by unprepared deflection of a lock arm. <P>SOLUTION: In a mounting structure of the electric wire cover 50 on a wire extraction part (equivalent to mat seal cover 40) of a connector housing 10A, a lock arm 45 which engages with a lock part 55a on the electric wire cover side is installed at the side wall 42a of the wire extraction part. The lock arm is constructed to allow engagement and disengagement with the lock part by deflecting and deforming to the outside once when engaging or disengaging with the lock part on the electric cover side. On the other hand, a lever 20 which is held at a prescribed temporary locking position before connector insertion engagement is installed at the connector housing, and on the inner face of a connection arm part 22 of this lever, a displacement regulation part 22a which regulates deflection to the disengagement position of the lock arm when the lever is held in a temporary locking position is installed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an electric wire cover mounting structure for guiding a bundle of electric wires in a predetermined direction while protecting the bundle of electric wires drawn out from an electric wire extraction portion at the rear portion of a connector housing.

Patent Document 1 provides an example of a conventional wire cover mounting structure.
In this conventional wire cover mounting structure, a lock protrusion is provided on the wire lead-out portion of the connector housing, and a lock arm that engages with the lock protrusion on the connector housing side is provided on the wire cover side. When the lock arm is engaged, the lock arm collides with the lock protrusion, so that the lock arm is once bent and deformed to allow the lock protrusion to pass, and after the lock protrusion has passed, the lock arm returns from the bend. The lock arm and the lock projection are engaged so that the wire cover is locked at the mounting position.

JP-A-9-219245

  By the way, when an external force is applied to the wire harness pulled out from the wire cover, the external force may be applied to the wire cover, but if the force acts in a direction to release the engagement between the lock arm and the lock projection, There is a concern that the arm may bend freely, the engagement may be released, and the wire cover may come off.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a wire cover mounting structure that can reliably prevent the wire cover from coming off due to inadvertent bending of the lock arm. It is to provide.

In order to achieve the above-described object, the wire cover mounting structure according to the present invention is characterized by the following (1) to (3).
(1) An electric wire cover mounting structure in which an electric wire cover that covers an electric wire drawn from the electric wire drawing portion is detachably attached to the electric wire drawing portion at the rear of the connector housing,
A lock arm that locks the electric wire cover in a mounting position by engaging with a lock portion on the electric wire cover side is provided on the side wall of the electric wire drawing portion,
When the lock arm is engaged with or released from the lock portion on the electric wire cover side, the lock arm is once bent and deformed outwardly intersecting the side wall, thereby engaging with and engaging with the lock portion. It is configured to allow unlocking,
On the other hand, the connector housing is operated to rotate when mated with the mating connector housing, so that both the connector housings are fitted, and the lever is held in a predetermined temporary locking position before the fitting. Is provided,
Mounting the electric wire cover, wherein the lever is provided with a displacement restricting portion that restricts the bending of the lock arm to the disengagement position when the lever is held at the temporary locking position. Construction.
(2) In the mounting structure of the electric wire cover configured as described in (1) above,
The lever includes a pair of side plate portions that are opposed to each other so as to sandwich both outer side surfaces of the connector housing and are rotatably connected to rotation fulcrums provided on both outer side surfaces of the connector housing, and the pair of side plate portions. And a connecting arm portion for connecting the connector housing, and when the connector housing is fitted to the mating connector housing, the connector housing is rotated forward from the temporary locking position that has fallen backward. The displacement restricting portion is provided on the inner surface of the connecting arm portion of the lever.
(3) In the mounting structure of the wire cover having the configuration of (1) or (2) above,
The displacement restricting portion is configured to abut against the outer surface of the lock arm when the lever is in the temporary locking position and restrict the outward bending of the lock arm.

According to the mounting structure of the electric wire cover having the configuration (1), the lever is provided with the displacement restricting portion that restricts the bending of the lock arm to the disengagement position. The wire cover can be reliably prevented from falling off when an excessive force is applied to the wire harness.
According to the mounting structure of the electric wire cover having the configuration (2) above, the lock arm is inadvertently engaged only by providing a slight device (displacement restricting portion) at an inconspicuous portion of the lever (inner surface of the connecting arm portion). Since the releasing operation can be prevented, the reliability during handling can be improved.
According to the mounting structure of the wire cover having the configuration of (3) above, when the lever is in the temporary locking position, the displacement restricting portion abuts on the outer surface of the lock arm. it can.

  According to the present invention, it is possible to reliably prevent the wire cover from falling off when an excessive force is applied to the wire harness.

  The present invention has been briefly described above. Further, details of the present invention will be further clarified by reading the embodiments for carrying out the invention described below with reference to the accompanying drawings.

It is the disassembled perspective view seen from the front side of the connector unit to which the mounting structure of the electric wire cover of the embodiment of the present invention was applied. It is the disassembled perspective view seen from the rear side of the connector unit. It is a perspective view which shows the relationship between the connector housing and lever of the connector unit. It is a sectional side view which shows the whole assembly state of the connector unit, and is sectional drawing which understands the structure of the lock part of a mat | matte seal cover and an electric wire cover, and the relationship of a lever. (A) is the side view which abbreviate | omits one part and shows the state before operating the lever of the connector unit to a temporary latching position, (b) is the Vb part enlarged view of (a), (c) is (b) It is a longitudinal cross-sectional view of the part. (A) is a side view showing the state when the lever of the connector unit is operated from the position of FIG. 5 (a) to the temporary locking position, with a part omitted, and (b) is an enlarged view of the VIb portion of (a). FIG. 4C is a longitudinal sectional view of the portion (b). (A) is a sectional side view of the connector unit when the lever is in the temporary locking position, and (b) is an enlarged view of a main part thereof.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is an exploded perspective view as seen from the front side of a connector unit to which the wire cover mounting structure of the embodiment is applied, FIG. 2 is an exploded perspective view as seen from the rear side of the connector unit, and FIG. 3 is a connector of the connector unit. FIG. 4 is a side sectional view showing the entire assembled state of the connector unit, and a sectional view showing the relationship between the mat seal cover and the lock portion of the wire cover and the lever. (A) is a side view showing the state before operating the lever of the connector unit to the temporary locking position with a part omitted, (b) is an enlarged view of the Vb portion of (a), and (c) is ( FIG. 6 (a) is a side view showing the state when the lever of the connector unit is operated from the position shown in FIG. 5 (a) to the temporary locking position. , (B) is an enlarged view of the VIb part of (a), c) is a longitudinal sectional view of a portion of (b), a side sectional view of the connector unit when (a) in FIG. 7 the lever is at the partial locking position, and (b) is an enlarged view of the essential part.

  The connector unit to which the wire cover mounting structure of the present embodiment shown in exploded view in FIGS. 1 and 2 accommodates a large number of terminals (not shown) in a connector housing 10A made of a synthetic resin molded product. The multi-core connector 10 configured as described above and a connector housing 10A are rotatably mounted on the outside of the connector housing 10A, and are rotated in the direction of arrow A when the connector 10 is fitted to a connector on the other side (not shown). Thus, the lever 20 made of a synthetic resin molded product that generates a large fitting force with a small rotational operation force and smoothly fits both connectors and the rear portion of the connector housing 10A by the lever principle. A mat or mat made of rubber or flexible resin that seals the gap between the electric wire extending from each terminal accommodated in the connector housing 10A and the connector housing 10A. And a mat seal cover made of synthetic resin that is fitted and fixed to the rear portion of the connector housing 10A and prevents the mat seal 30 from falling off while pressing the mat seal 30 from the rear side. 40, which is a portion corresponding to the lead-out portion) and the mat seal cover 40, and guides the bundle of electric wires in a predetermined direction while protecting the bundle of electric wires drawn out from the rear side of the mat seal cover 40 An electric wire cover 50 made of a synthetic resin molded product.

  As shown in FIG. 1, the connector housing 10 </ b> A includes an inner peripheral connector main body portion 11, an outer peripheral side hood portion 12, and a rear end cylindrical wall portion 13. The hood part 12 is a part that fits to the outer periphery of the fitting cylindrical wall of the connector housing of the mating connector, and the connector main part 11 is a part that fits to the inner circumference of the fitting cylindrical wall of the connector housing of the mating connector. As shown in FIG. 3, the rear end of the hood portion 12 is coupled to the rear end of the connector main body portion 11 and the front end of the cylindrical wall portion 13. A lock mechanism 14 that locks the lock portion of the lever 20 is provided on the upper portion of the hood portion 12. Further, a front holder 18 is attached to the front portion of the connector main body 11 of the connector housing 10A, and a side spacer 19 for preventing terminal detachment is attached to a space in the middle of the connector main body 11 in the front-rear direction. Yes.

  As shown in FIG. 1, the lever 20 has a substantially U-shape having a pair of left and right side plate portions 21 and a connecting arm portion 22 that connects the side plate portions 21, and both the hood portions 12 of the connector housing 10 </ b> A. As shown in FIG. 3, the mounting hole 26 formed in the side plate portion 21 is fitted to the boss 16 projecting on the outer side surface so as to be rotatable on the upper side of the connector housing 10A. Before the fitting, the first temporary locking position and the second temporary locking position can be temporarily locked. As shown in FIGS. 4 and 5A, the first temporary locking position is set to a position that is slightly tilted from the vertical standing position, and the second temporary locking position is set to FIG. As shown in a) and FIG. 7A, it is set at a position that is further inclined.

  In order to temporarily hold the lever 20 in such a temporary locking position, as shown in FIG. 3, one locking protrusion 24 is provided on the inner surface of the side plate portion 21 of the lever 20, and the outside of the connector housing 10A is provided. First and second temporary locking projections 12f and 12e that are separated from each other are provided on the side surface. As shown in FIG. 5, when the temporary locking protrusion 24 of the lever 20 is engaged with the first temporary locking protrusion 12f on the connector housing 10A side, the lever 20 It is held in position and temporarily held so as not to rotate in the direction of arrow F from the illustrated position. Further, the lever 20 is rotated in the direction of arrow E from that position, and as shown in FIG. 5, the temporary locking projection 24 of the lever 20 exceeds the second temporary locking projection 12e, and the temporary locking projection When engaged with 12e, the lever 20 is temporarily held at the illustrated first temporary locking position, and is temporarily held so as not to rotate in the direction of arrow F from the illustrated position.

  The second temporary locking position is the holding position of the regular lever 20 before the connector is fitted, and by rotating the lever 20 to this position, the lever 20 is held at that position with a certain holding force. I can keep it. Further, if the lever 20 is rotated in the direction of the arrow F with a force exceeding the holding force, the lever 20 can be rotated and the fitting operation between the connectors can be performed.

  When the connector is fitted, the convex portion (not shown) protruding from the housing of the mating connector is connected to the peripheral edge of the side plate portion 21 of the lever 20 and the connector housing while the lever 20 is held at the temporary locking position. By rotating the lever 20 in the direction of the arrow A in FIG. 1 while being received at one end of the cam groove 25 from the inlets 27, 17 provided at the front end of the hood portion 12 of 10A, The mating connector is pulled into the connector 10 side through a convex portion that slides along the cam groove 25 so that both connectors can be fitted.

  As shown in FIGS. 2 and 4, the cylindrical wall portion 13 provided at the rear portion of the connector housing 10 </ b> A has an open rear surface and a substantially quadrangular shape when viewed from the rear surface, and a space 13 a inside thereof is a mat seal. It is a space that accommodates 30. A plurality of locking projections 15 for locking the mat seal cover 40 are provided on the outer periphery of the upper wall portion and the lower wall portion of the cylindrical wall portion 13 that face each other.

  As shown in FIGS. 1 and 2, the mat seal cover 40 has a first half portion fitted in a cylindrical peripheral wall 41 that fits on the outer periphery of the cylindrical wall portion 13 of the connector housing 10 </ b> A and a space 13 a inside the cylindrical wall portion 13. By connecting the thick pressing surface plate portion 42 that presses and supports the mat seal 30 forward, the rear end edge of the cylindrical peripheral wall 41 and the outer periphery of the intermediate portion in the front-rear direction of the pressing surface plate portion 42. And a connecting wall portion 44 that secures an annular groove 46 into which the rear end of the cylindrical wall portion 13 of the connector housing 10A is inserted between the front half portion of the pressing face plate portion 42 and the cylindrical peripheral wall 41. . The pressing face plate portion 42 is provided with a number of electric wire extraction holes arranged corresponding to the positions of the terminals in order to draw out the electric wires. Further, a lock that engages with the lock projection 15 on the connector housing 10A side when the mat seal cover 40 is assembled to the cylinder wall portion 13 of the connector housing 10A on the upper wall portion and the lower wall portion of the cylindrical peripheral wall 41. A portion 43 is provided. When the mat seal cover 40 is attached to the rear portion of the connector housing 10A, the electric wire is drawn backward from the rear surface of the mat seal cover 40, so the mat seal cover 40 corresponds to the electric wire extraction portion of the connector 10. It becomes a part to do.

  In the present embodiment, the electric wire cover 50 is attached and fixed to the mat seal cover (corresponding to the electric wire drawing portion) 40, and the upper wall portion and the lower wall portion of the cylindrical peripheral wall 41 of the mat seal cover 40. A band-plate-like lock arm 45 for locking the electric wire cover 50 is protruded from a part of the rear end edge of the wire cover 50 while being separated from the connecting wall portion 44.

  The lock arm 45 has a base end 45 a integrally coupled to the cylindrical peripheral wall 41, and a distal end 45 b that is a free end is extended rearward along the outer peripheral surface 42 a of the rear half portion of the pressing surface plate portion 42. The inner surface of the tip 45b, which is the free end, is provided on the side wall 51a of the electric wire cover 50. An engagement convex portion 45c that engages with the lock portion 55a is provided. In addition, a slope 45d that facilitates insertion of the lock portion 55a on the electric wire cover 50 side is provided on the distal end surface of the engaging convex portion 45c.

  In addition, the portion where the base end 45a of the lock arm 45 is connected on the cylindrical peripheral wall 41 of the mat seal cover 40 is locked from the rear end edge of the cylindrical peripheral wall 41 at positions on both sides in the width direction of the lock arm 45. A pair of first slits 45e are provided to extend the length of the substantial bending portion of the lock arm 45 by separating the arm 45, and to make the lock arm 45 easy to bend.

  The pair of first slits 45e are formed by cutting from the rear end edge of the cylindrical peripheral wall 41 to an intermediate position between the rear end edge and the front end edge of the cylindrical peripheral wall 41. The position near the back end in the cutting direction of one slit 45e can be bent outward. The lock arm 45 configured as described above is positioned on the outer wall surface (corresponding to a pair of side walls facing each other) of the outer peripheral surface 42a of the pressing surface plate portion 42 in the vertical direction.

  Further, as shown in FIGS. 4 and 7, the inner surface of the connecting arm portion 22 of the lever 20 is locked when the lever 20 is held at the temporary locking position corresponding to the lock arm 45. A displacement restricting portion 22a is provided that contacts the outer surface of the arm 45 and restricts the bending of the lock arm 45 to the disengagement position.

  On the other hand, as shown in FIG. 1, the electric wire cover 50 has a substantially semi-cylindrical shape having a space for guiding an electric wire therein, and has a semi-cylindrical shape (a U-shaped cross section) having a pair of upper and lower side walls 51a. Main cover portion 51, an end wall portion (corresponding to another side wall) 52 provided to close one end side of the semi-cylindrical main cover portion 51, and the other end of the semi-cylindrical main cover portion 51 And a semi-cylindrical wire guide portion 53 that guides the direction of drawing out the wire. The wire guide portion 53 is a portion that guides the bundle of wires received in the main cover portion 51 while curving it to the side of the main cover portion 51, and the end of the length direction passes through the wire binding band. A hole 54 is provided.

  The upper and lower side walls 51a of the main cover 51 are provided with wide lock plates 55 for connecting to the mat seal cover 40 when the wire cover 50 is attached to the mat seal cover 40. A lock portion 55 a that engages with the lock arm 45 on the mat seal cover 40 side is provided on the electric wire guide portion 53 side of the plate 55. Further, the portion of the lock plate 55 opposite to the electric wire guide portion 53 side is an opening prevention portion (opening prevention means) 48 provided side by side with the lock arm 45 on the upper and lower outer peripheral surfaces of the pressing surface plate portion 42 of the mat seal cover 40. It becomes the insertion part (opening stop means) 55b inserted in.

  The lock portion 55a advances while pushing and opening the lock arm 45 outward (bending outward) by abutting with the locking projection 45c of the lock arm 45 when the electric wire cover 50 is attached. When the lock arm 45 is elastically returned to the initial inward position after the locking projection 45c, the lock projection 45c is engaged with the engagement projection 45c of the lock arm 45. This is the part that functions to regulate movement in the opposite direction.

  Further, as shown in FIG. 2, the opening preventing portion 48 on the mat seal cover 40 side is formed in a hook shape from the connecting wall portion 44 so as to face the upper and lower outer peripheral surfaces of the pressing face plate portion 42 with a predetermined gap. The extending presser plate portion 48a and one end of the presser plate portion 42 are connected to the outer peripheral surface of the press face plate portion 42 to thereby reinforce the presser plate portion 48a, and the lock plate 55 of the electric wire cover 50 is inserted. When viewed from the rear front, it is substantially L-shaped.

  Moreover, as shown in FIG. 1, the front-end | tip of the end wall part (equivalent to another side wall) 52 of the electric wire cover 50, and the outer peripheral surface (other side wall) of the right-and-left one side of the press surface board part 42 of the mat seal cover 40 corresponding to it. Are provided with engaging portions (engaging means) 52a and 47 that are engaged with each other when the electric wire cover 50 is attached and serve as pivotal fulcrums when the electric wire cover 50 is attached. Accordingly, the opening preventing portion 48 and the insertion portion 55b that are the opening preventing means are located closer to the engaging portions 52a and 47 than the lock arm 45 and the locking portion 55a that are the locking means, and the electric wire cover 50 is rotated. When it is moved and attached to the mat seal cover 40, the insertion portion 55b starts to be inserted into the opening preventing portion 48 before the lock portion 55a and the lock arm 45 are engaged.

Next, the operation will be described.
When assembling the connector unit shown in FIGS. 1 and 2, first, the lever 20 is assembled to the connector housing 10A constituting the connector 10, and the lever 20 is moved to the first temporary locking position shown in FIGS. 4 and 5A. To keep. In this state, the mat seal 30 is fitted on the inner peripheral side of the cylindrical wall portion 13 at the rear portion of the connector housing 10A, and the mat seal cover 40 is attached and fixed to the rear portion of the connector housing 10A while pressing the mat seal 30 ( (See FIG. 4). At this time, the mat seal cover 40 is fixed to the connector housing 10A by engaging the lock portion 43 of the mat seal cover 40 with the lock projection 15 on the connector housing 10A side. In this state, a large number of electric wires are drawn backward from the electric wire extraction holes of the pressing face plate portion 42 of the mat seal cover 40.

  Next, the engaging portion 52a of the end wall portion 52 of the electric wire cover 50 is engaged with the engaging portion 47 on the side surface of the mat seal cover 40, and the electric wire drawn out rearward of the mat seal cover 40 is placed in the inner space. While being picked up, the wire cover 50 is rotated to the mat seal cover 40 side with the engagement portion between the engagement portions 52a and 47 as a fulcrum, and the insertion portion 55b of the lock plate 55 is prevented from opening the mat seal cover 40. Insert into part 48.

  When the electric wire cover 50 is further rotated in this state, the lock portion 55a of the electric wire cover 50 is hooked on the tip of the lock arm 45, and the electric wire cover 50 is further rotated while the lock arm 45 is bent outward. When the cover 50 is properly attached to the mat seal cover 40, as shown in FIG. 4, the lock portion 55a is engaged with the engagement convex portion 45c of the lock arm 45, and the electric wire cover 50 is locked so as not to drop off. Is done.

  Next, when the electric wire cover 50 is attached, the lever 20 is moved from the first temporary locking position shown in FIGS. 4 and 5 (a) to the second temporary locking position shown in FIGS. 6 (a) and 7 (a). Rotate in the direction of arrow E. Then, as shown in an enlarged view in FIG. 7B, the displacement restricting portion 22 a of the lever 20 comes into contact with the outer surface of the lock arm 45 so as to press the lock arm 45.

  Therefore, in this state, even if an external force in the direction of arrow N in FIG. 7A acts on the electric wire W in the electric wire cover 50, the lock arm 45 is pressed by the lever 20 so as not to move in the disengagement direction. Therefore, the lock arm 45 and the lock portion 55a are not disengaged, and thus the wire cover 50 is not worried and the reliability of the lock is increased.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

  In each of the above embodiments, the case where the present invention is applied between the mat seal cover and the wire cover attached to the rear portion of the connector has been described. However, when the mat seal cover is not used, the wire lead-out portion of the connector housing is used. The present invention can also be applied between the wire cover and the wire cover.

10A connector housing 20 lever 21 side plate part 22 connecting arm part 22a displacement regulating part 40 mat seal cover (wire drawing part)
42a Outer peripheral surface (side wall) of pressing face plate
45 Lock arm 50 Electric wire cover 55a Lock part

Claims (3)

An electric wire cover mounting structure in which an electric wire cover covering the electric wire drawn out from the electric wire extraction portion is detachably attached to the electric wire extraction portion at the rear of the connector housing,
A lock arm that locks the electric wire cover in a mounting position by engaging with a lock portion on the electric wire cover side is provided on the side wall of the electric wire drawing portion,
When the lock arm is engaged with or released from the lock portion on the electric wire cover side, the lock arm is once bent and deformed in an outward direction intersecting the side wall, thereby engaging with and engaging with the lock portion. It is configured to allow unlocking,
On the other hand, the connector housing is operated to rotate when mated with the mating connector housing, so that both the connector housings are fitted, and the lever is held in a predetermined temporary locking position before the fitting. Is provided,
Mounting the electric wire cover, wherein the lever is provided with a displacement restricting portion that restricts the bending of the lock arm to the disengagement position when the lever is held at the temporary locking position. Construction.   The lever includes a pair of side plate portions that are opposed to each other so as to sandwich both outer side surfaces of the connector housing and are rotatably connected to rotation fulcrums provided on both outer side surfaces of the connector housing, and the pair of side plate portions. And a connecting arm portion for connecting the connector housing, and when the connector housing is fitted to the mating connector housing, the connector housing is rotated forward from the temporary locking position that has fallen backward. The wire cover mounting structure according to claim 1, wherein the displacement restricting portion is provided on an inner surface of the connecting arm portion of the lever.   2. The displacement regulating portion is configured to abut against an outer surface of the lock arm when the lever is in the temporary locking position, and regulates outward bending of the lock arm. Or the mounting structure of the electric wire cover of 2.

Images