JPH1055849A - Connector cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector cover having the capability of stably maintaining a state for guiding a wire in the prescribed direction, regardless of an external force acting on the wire. SOLUTION: When a wire W is housed in a wire housing groove 21a and a presser cover 26 is mounted, the cam projections 25 of flexible pieces 21 and the cam hole 26a of the presser cover 26 come in slidable contact with each other. As a result, both flexible pieces 21 are flexed so as to near each other, and the coupling projection rows 23 of the flexible pieces 21 and the hook pieces 29 of the presser cover 26 are engaged with each other. In this state, the wire W is tightened with the flexible pieces 21 in the wire housing groove 21a and maintained in a stable state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a connector cover mounted on a connector housing.

[0002]

2. Description of the Related Art Conventionally, as this kind of connector cover,
The one shown in FIG. 6 is known. The connector cover 1
The connector 2 is attached for the purpose of avoiding direct water exposure to the connector 2 or preventing the internal terminal fitting from being directly applied to an internal terminal fitting when a pulling force acts on an electric wire drawn from the connector 2. The electric wire W drawn from the connector 2 is covered with a sheath tube T for protecting the electric wire so as to bundle them. The electric wire W drawn from the connector is temporarily put on the connector cover 1 on the connector cover 1. The connector cover 1 is provided with an electric wire holding portion 3 for holding the covering tube T so that the wire can be routed to the rear of the connector. Wire holding part 3
Is formed by symmetrically facing a pair of arc-shaped flexible pieces 3a, expands the flexible pieces 3a once, pushes the electric wires W into the inside thereof, and holds the electric wires W by its elastic force.

[0003]

In the above-described structure, when the worker grasps and handles the electric wire W, the electric wire W is connected to the connector 2 around the electric wire lead-out portion 1a as shown by the arrow in FIG. , The wire W may be pulled from the wire holding portion 3 in a direction perpendicular to the axial direction. In such a case, in the conventional connector cover 1 described above,
The space between the arc-shaped flexible pieces 3a is opened upward,
In addition, since the holding tube is held by utilizing the elastic force, when the pulling force acts from the above-described direction, there is a concern that the covering tube T may come off.

As a countermeasure, it is conceivable to increase the holding force of the flexible piece 3a. However, if the elastic force of the flexible piece 3a is increased by increasing the thickness of the flexible piece 3a or the like, the flexible piece 3a is reduced. The force required at the time of expanding also increases, and the mounting property deteriorates. Therefore, such a measure is not an advantage.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a connector cover capable of stably maintaining a state in which a wire is guided in a predetermined direction even when an external force is applied to the wire. And

[0006]

[Means for Solving the Problems]

<Invention of claim 1> To achieve the above object, claim 1
The present invention relates to a connector cover provided with a wire receiving groove attached to a wire drawing side of a connector and guiding a drawn wire in a predetermined direction, wherein the wire receiving groove is always a wire on an outer surface of the connector cover. The presser lid formed inside a pair of clamp pieces that stand up through an opening through which the presser lid can be inserted, and which is mounted so as to close the opening, The present invention is characterized in that a cam mechanism is provided to allow the clamp piece to bend in the closing direction and to be pressed against the peripheral surface of the electric wire.

<Invention of Claim 2> Further, according to the invention according to claim 2, in the connector cover according to claim 1,
The clamp piece is separated so that the engaging portion that engages with the holding lid and allows the holding lid to be mounted, and the cam portion that constitutes the cam mechanism together with the holding lid can be bent independently. It has a characteristic in that it is formed.

[0008]

Actions and effects of the present invention

<Invention of claim 1> In claim 1, the opening of the wire accommodating groove is closed by inserting the electric wire into the electric wire accommodating groove and attaching the holding cover, whereby the electric wire is inserted into the electric wire accommodating groove. It is housed in a state where the entire circumference is surrounded. Also,
When the holding lid is attached, both clamp pieces are bent and deformed by the cam action of the cam mechanism so as to be pressed along the outer circumference of the wire, so even if a force in the pull-out direction acts on the wire, this force is clamped. The piece is received and does not act directly on the holding lid. Therefore, it is effective for retaining the electric wire. In addition, in the first aspect, the closing operation of both clamp pieces is performed by mounting the holding cover, so that it is possible to set such that the wires are loosely inserted when the wires are inserted into the wire receiving grooves. In this case, it is possible to easily insert the electric wire.

<Invention of Claim 2> In the structure of Claim 2,
Since the flexible piece has a configuration in which the engaging portion and the cam portion bend separately, the engagement between the pressing lid and the flexible piece, the sliding contact operation of the pressing lid and the flexible piece by the cam mechanism, and the like. Are performed without being affected by each other, and the holding of the electric wire by the flexible piece and the engagement of the holding lid by the engaging portion can be reliably performed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In FIG.
Is a connector cover, which is attached to the rear end of the connector 30 provided with a plurality of terminal fittings to which the electric wires W are crimped, housed in the connector housing 31. The connector cover 10 has flexible engagement arms 12 on both side walls of a main body 11 formed in a box shape. When the main body 11 is put on the rear end of the connector housing 31, the flexible engagement arms 12, 12 are engaged with the engagement projections 32, 32 provided on both side walls of the rear end, whereby the connector is connected. The cover 10 is attached.

The electric wire W pulled out from the rear end face of the connector 30 is folded back into a U-shape inside the main body 11, and the electric wire outlet 13 (more specifically, formed on the upper surface of the main body 11 in FIG. 1). Is an opening formed between the connector cover 10 and the connector 30 when the connector cover 10 is mounted, and is opened forward. Further, the plurality of wires W led out from the wire outlet 13 are united by a protective covering tube T.

An electric wire holding portion 20 for guiding and holding the electric wire W rearward at a portion covered with the coating tube T is disposed behind the electric wire outlet 13 of the connector cover 10.
This electric wire holding part 20 has a pair of flexible pieces 21 and 21. The flexible pieces 21 and 21 have a cantilever shape extending perpendicularly to the upper surface of the main body 11 and are opposed to each other at intervals substantially equal to the outer diameter of the coating tube T. Between these, there is an electric wire accommodating groove 21a for holding the coating tube T of the electric wire W along the front-back direction.
The axial direction of a is the same as the opening direction of the wire outlet 13. Further, as shown in FIG. 2, a protruding ridge 22 is formed on the upper edge portions of both flexible pieces 21 facing each other, and the upper opening 21b of the wire housing groove 21a is slightly narrowed. This allows
When the coating tube T of the electric wire W is passed through the opening 21b, the ridge 2
The height of the flexible piece 21 is expanded by the height of 2, and the wire W is housed in the wire housing groove 21a in a temporary holding state.

An engagement protrusion 23 is formed on the upper edge of the outer surface of each of the flexible pieces 21 opposite to the surface on which the protrusion 22 is provided. As shown in an enlarged manner in FIG. 3, the engaging projection 23 has an inclined surface 23 a that falls outward from the distal end surface 24 of the flexible piece 21, and a slight vertical surface 23 from the lower end of the inclined surface 23 a.
and a lower end surface 23c that is slightly inclined upward from the lower end to the inside through the lower end b.

On the distal end surfaces 24 of the flexible pieces 21 and 21, there are formed cam projections 25 and 25 which engage with the cam holes 26a and 26a of the holding lid 26 described below. As shown in FIG. 3, the cam projections 25 each have an inner surface facing each other and a slope inclined downward inward, an outer surface on the opposite side slopes 25 a descending from the tip to the outside, and a cam projection from the lower end. And a vertical surface 25b extending over the root of the base 25.

On one side of the flexible piece 21 (the one on the left side in FIG. 2) on which the engaging projection 23 is provided, a holding lid 26 is provided via a hinge 27 on the fixed end side. The holding lid 26 is formed to have substantially the same width as the flexible piece 21, and is provided with a hook piece 29 protruding on a side facing the flexible piece 21 on both sides of the flat main body 28. Has a substantially U-shape. When the holding lid 26 faces the flexible piece 21, the hook piece 29 is formed on the inclined surface 23 a of the engaging ridge 23.
Inclined surface 29a that slides in contact with the upper end surface 29a that comes into contact with and engages with the lower end surface 23c after riding over the sliding contact between the two.
c. When the hook piece 29 and the engaging ridge 23 are engaged, the main body 28 is moved to the opening 2 of the wire accommodation groove 21a.
1b is closed, and the cam projection 25 is set in the cam hole 26a of the main body 28.

The main body 28 has a pair of cam holes 26a, 26a formed so as to face the cam projections 25, 25, respectively. When the holding lid 26 is rotated about the hinge 27, as shown in FIG. 3, first, the inclined surface 25a of the left cam projection 25 slides against the edge of the cam hole 26a on the left side in FIG. Is bent inward.
Subsequently, the right cam hole 26a faces the right cam projection 25, and the right flexible piece 21 bends inward in the same manner.
When the holding lid 26 is pushed down in a state where both flexible pieces 21 are bent inward, as shown in FIG. 4, the hook pieces 29, 29 and the engaging projections 23, 23 are engaged, and the holding lid 26 is engaged. Is in the engaged state, and the cam projection 25 is fitted into the cam hole 26a. As shown in FIG.
The state comes into contact with the inner peripheral surface. In the natural state, the interval between the two flexible pieces 21 is substantially equal to the outer diameter of the coating tube T, and therefore becomes narrower than that which is bent inward to each other. It is tightened from the circumferential direction in the accommodating groove 21a to be in a state of being stably held.

Next, the operation of the present embodiment will be described. The connector cover 10 is attached to the rear end of the connector 30, and the electric wire W extends from the electric wire outlet 13 to the outside as shown in FIG. 1. Then, the electric wire W is guided in the direction of the arrow in FIG. 1, and the portion covered with the covering tube T is fitted along the opening 21b of the electric wire accommodating groove 21a, and then pushed inside. Then, when the two flexible pieces 21 are expanded by the height of the protruding shape 22 and are housed so as to be in close contact with the bottom surface of the wire housing groove 21a, the flexible piece 21 is closed. W is temporarily held in the wire receiving groove 21a. This operation can be easily performed because the flexible piece 21 is only expanded by a small height of the ridge 22.

Subsequently, the holding lid 26 is rotated about the hinge 27 so as to face the flexible piece 21. Then, in the course of this rotation, the cam projections 25, 25
The flexible pieces 21 and 21 are slid in contact with each other inwardly in contact with the edge of a. Then, when the holding lid 26 is pressed down to the flexible piece 21 side, as shown in FIG.
And the engaging ridges 23, 23 engage with each other, and the cam hole 2
The cam projections 25, 25 are accommodated in 6a, 26a, and the interval between the two flexible pieces 21, 21 is smaller than the outer diameter of the coating tube T. Thereby, the electric wire W covered with the covering tube T is
It is fastened from the circumferential direction in the wire receiving groove 21a and is stably held.

<Other Embodiments> The present invention is not limited to the above embodiments. For example, the following embodiments are also included in the technical scope of the present invention.
In addition to the following, various changes can be made without departing from the scope of the invention.

(1) The flexible piece 21 of the above embodiment is
The cam projection 25 and the engagement projection 23 are both displaced when bent. For example, as shown in FIG. 5, a cantilever-shaped flexible piece is provided on the upper surface of the main body 11. Are formed in the front-rear direction and two pairs are formed. The front flexible pieces 41, 41 are provided with cam projections 25, 25 at the tips thereof, and the flexible pieces 42, 42 are provided with engaging projections 23, 23 at the rear. It is good also as a structure provided. With such a configuration, the cam projection 25 and the engagement projection 23 are separately displaced, and the operations of the two are performed without being influenced by each other, and the electric wire W can be reliably held. it can.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a connector cover of the present embodiment.

FIG. 2 is a front view of the connector cover.

FIG. 3 is an enlarged front sectional view showing a state in which a holding lid and a flexible piece are in sliding contact with each other.

FIG. 4 is an enlarged front sectional view showing a state in which a holding cover of the connector cover is closed.

FIG. 5 is a perspective view showing a part of a modification.

FIG. 6 is a perspective view showing a conventional connector cover.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Connector cover 21 ... Flexible piece 21a ... Electric wire accommodating groove 21b ... Opening 23 ... Engaging protrusion 25 ... Cam protrusion (cam mechanism) 26 ... Holding lid 26a ... Cam hole (cam mechanism) 29 ... Hook piece 30 ... Connector 41: Flexible piece 42: Flexible piece W: Electric wire

Claims (2)

[Claims] 1. A connector cover which is provided on a wire drawing side of a connector and provided with a wire receiving groove for guiding a drawn wire in a predetermined direction, wherein the wire receiving groove is always provided on an outer surface of the connector cover. Is formed inside a pair of clamp pieces that stand up through an opening through which the electric wire can be inserted, and a holding lid that is attached so as to close this opening has a holding lid attached to the clamping piece. A connector mechanism provided with a cam mechanism for bending both clamp pieces in a closing direction and pressing the clamp pieces against the peripheral surface of the electric wire. The clamp piece is configured such that an engaging portion that engages with the holding lid and allows the holding lid to be mounted, and a cam portion that forms a cam mechanism together with the holding lid are independently bent. 2. The connector cover according to claim 1, wherein the connector cover is formed so as to be separated.