JP4835512B2 - Wire cover - Google Patents

Description

  The present invention relates to an electric wire cover that guides an electric wire drawn from a rear end surface of a connector housing in a direction different from the drawing direction.

As this type of electric wire cover, for example, an electric wire cover described in Patent Document 1 below is known. The electric wire cover includes a cover main body attached to the rear end surface of the connector housing, and a winding portion that is wound together with the electric wire led out from the electric wire outlet port of the cover main body and fixes the electric wire to the cover main body.
JP 2002-343497 A

By the way, depending on the installation location of the connector to which the electric wire cover is attached, in order to avoid interference with other wiring or driving parts, the electric wire is housed inside the protective tube, and this protective tube is fixed to the winding part There is. In general, a corrugated tube is often used as such a protective tube. However, depending on the cutting method, the end of the corrugated tube may be a sharp end. In such a case, if the corrugated tube is inserted deep inside the cover body, the end of the corrugated tube becomes an electric wire. There is a risk of the wires being damaged by contact.
The present invention has been completed on the basis of the above circumstances, and in the case of fixing using a protective tube while allowing the electric wire to be directly fixed to the winding portion, the electric wire is damaged by the protective tube. The purpose is to prevent this from happening.

The present invention relates to an electric wire cover for guiding an electric wire drawn out from a rear end surface of a connector housing in a direction different from the drawing direction, the cover main body being attached so as to cover the rear end surface of the connector housing, and the electric wire to the cover main body The wire receiving part that extends from the opening edge of the wire outlet leading out from the inside to the outside and receives the electric wire, and the wire receiving part is provided at the leading end side of the electric wire in the electric wire outlet direction, and is wound together with the electric wire by a binding tool Or by wrapping the electric wire together with the protective tube accommodated inside, a winding portion for fixing the electric wire to the electric wire receiving portion, and an electric wire receiving portion, and detecting that the end portion of the protective tube has reached the target position and a target wall, the target wall is formed by cutting the wire receiving portion in a direction intersecting the extending direction of the wire, the target wall The end edge in the direction notch Chi coincides with the end of the protective tube having a feature at which a configuration for detecting that has reached the target position.

According to such a configuration, in addition to being able to directly fix the electric wire to the winding portion with a binding tool, when the protective tube is used, it is detected by the target wall that the end of the protective tube has reached the target position. In addition, since it can be fixed by the binding tool, there is no possibility that the protective tube is inserted too deeply into the cover body. Therefore, it is possible to prevent the electric wire from being damaged by the end portion of the protective tube.
In addition, it is possible to easily detect that the target position has been reached by matching the end edge of the target wall in the notch direction with the end of the protective tube.

The following configuration is preferable as an embodiment of the present invention .

  The contact surface with the electric wire in the electric wire receiving portion may be configured to be flat along the lead-out direction of the electric wire. According to such a configuration, when the electric wire is directly fixed to the winding portion without using the protective tube, the electric wire may be damaged by the contact surface even if the electric wire is pressed against the contact surface with the winding by the binding tool. There is no.

  The electric wire receiving portion may include a pair of holding pieces that hold the protective tube from both sides. According to such a structure, since it can wind using a binding tool in the state which hold | maintained the protection tube with both the holding pieces, winding work becomes easy.

  A pair of winding portions may be provided with a predetermined wall in the lead-out direction of the electric wire with a predetermined interval, and may include a regulating wall that restricts the binding tool wound around the winding portion from coming off. According to such a configuration, even when the protective tube is pulled around the winding portion by the binding tool and the protective tube is pulled in the lead-out direction of the electric wire, the restriction wall prevents the binding tool from coming off.

  According to the electric wire cover of the present invention, it is possible to prevent the electric wire from being damaged by the protective tube when the electric wire can be directly fixed to the winding portion and fixed using the protective tube.

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the electric wire cover 10 according to the present embodiment is attached to the rear end surface 31 of the connector housing 30 and is used to guide the electric wire W drawn from the rear end surface 31 in a direction different from the drawing direction. It is done. In FIG. 1, the electric wire W is fixed to the electric wire cover 10 by a binding band (an example of the “binding tool” of the present invention) B in a state where the electric wire W is accommodated in the corrugated tube (an example of the “protective tube” of the present invention). Although shown, the electric wire W can be directly fixed to the electric wire cover 10 with the binding band B without using the corrugated tube T, as will be described later. The corrugated tube T and the binding band B are both known structures.

  First, the configuration of the connector housing 30 will be described. The connector housing 30 is made of synthetic resin, and has a horizontally long, substantially rectangular block shape as shown in FIGS. 3 and 4. Inside the connector housing 30, there are provided two types of cavities 32 that penetrate in the front-rear direction. In the present embodiment, the large cavities 32 are provided on both sides in the width direction of the small cavities 32 group. Further, in the substantially second half of the cavity 32, two types of large and small rubber plug accommodating cylinders 33 for accommodating rubber plugs (not shown) are provided so as to protrude rearward from the rear end surface of the connector housing 30.

  In the cavity 32, a terminal fitting (not shown) connected to the terminal of the electric wire W together with the rubber plug can be inserted from the rear, and when this terminal fitting reaches a proper insertion position in the cavity 32, The lance (not shown) provided in the cavity 32 is locked to prevent the removal. In a state where the terminal fitting is in the normal insertion position in the cavity 32, the rubber plug is accommodated in a compressed state between the outer peripheral surface of the electric wire W and the inner peripheral surface of the rubber plug accommodating tube 33, and the electric wire W is inserted into the rubber plug. It will be in the state pulled out back from the rear end of the storage cylinder 33.

  On the rear end surface 31 of the connector housing 30, four cover lock portions 34 shown in the figure for fixing the wire cover 10 are provided. Each cover lock portion 34 is located outside the rubber plug housing cylinder 33 group on the rear end surface 31 of the connector housing 30. The cover lock portion 34 includes a support wall 34a that rises rearward from the rear end surface 31 of the connector housing 30 and a lock protrusion 34b that protrudes outward at the rear end of the support wall 34a. The protruding height of the support wall 34a is substantially the same as the protruding height of the large-sized rubber stopper housing tube 33.

  Next, the configuration of the electric wire cover 10 will be described. In the description of the wire cover 10, the side attached to the rear end surface 31 of the connector housing 30 is the front. The electric wire cover 10 is made of synthetic resin, and includes a cover body 12 that is attached so as to cover the rear end surface 31 of the connector housing 30 as shown in FIGS. The cover body 12 has a shape that opens from the front to the side. The opening is a wire entrance 13 that allows the wire W to enter the inside of the cover body 12 and a wire conductor that leads the wire W to the outside of the cover body 12. And an outlet 14. That is, a portion of the opening of the cover body 12 that opens to the front is the electric wire entrance 13, and a portion that opens to the side is the electric wire outlet 14.

  Near the wire entrance 13 on the outer surface of the cover body 12, a cover locking piece that locks with the cover lock portion 34 of the connector housing 30 and holds the wire cover 10 attached to the rear end surface 31 of the connector housing 30. 15 is provided. As shown in FIG. 8, the cover locking piece 15 is formed in a cantilever shape that protrudes downward while maintaining a parallel posture with the outer surface of the connector housing 30. As shown in FIG. 5, the cover locking piece 15 is provided with a fitting hole 15a penetrating in the plate thickness direction. The fitting hole 15a is provided with a size that can accommodate the lock projection 34b of the cover lock portion 34 therein. Further, the cover locking piece 15 and the outer surface of the cover body 12 facing the cover locking piece 15 are provided slightly larger than the plate thickness of the support wall 34a of the cover lock portion 34. Thus, as shown in FIG. 2, when the electric wire cover 10 is attached to the rear end surface 31 of the connector housing 30, the lower end surface of the lock projection 34 b of the cover lock portion 34 and the fitting hole 15 a of the cover locking piece 15 are configured. The electric wire cover 10 is fixed to the rear end surface 31 of the connector housing 30 by engaging with the lower end surface of the peripheral wall.

  A guide rib 34 c is provided on the surface of the support wall 34 a of the cover lock portion 34 opposite to the surface on which the lock protrusion 34 b is provided, and the surface facing the cover locking piece 15 on the outer surface of the connector housing 30. Is provided with a guide groove 19 into which the guide rib 34c is fitted. Thereby, guidance when attaching the wire cover 10 to the rear end surface 31 of the connector housing 30 is possible.

  Now, as shown in FIG. 1, an electric wire receiving portion 16 extending in the direction in which the electric wire W is led out is integrally provided at the opening edge of the electric wire outlet 10 of the electric wire cover 10. The wire receiving portion 16 is for fixing the wire W led out from the wire lead-out port 14 to the wire cover 10 using the binding band B. If the wire receiving portion 16 is not provided, the corrugated tube T cannot be fixed to the wire cover 10, and thus the corrugated tube T is allowed to move freely. However, the cut end surface of the corrugated tube T may be burred or sharpened depending on the cutting method. Therefore, the corrugated tube T enters the inside of the cover main body 12 from the electric wire outlet port 14, and the connector When the electric wire W pulled out from the rear end surface 31 of the housing 30 is contacted, the electric wire W may be damaged.

  Under such circumstances, the winding portion 17 that is wound together with the corrugated tube T by the binding band B and fixes the corrugated tube T to the wire receiving portion 16 is integrally formed at the leading end portion of the electric wire W in the wire receiving portion 16. Is provided. The winding portion 17 is provided so as to protrude in the direction in which the electric wire W is led out, and a pair of restrictions arranged on the outer surface of the winding portion 17 so as to be spaced apart in the direction in which the electric wire W is led out at a slightly larger interval than the width of the binding band B. A wall 17a is formed. Thereby, even if the corrugated tube T is pulled in the lead-out direction of the electric wire W in a state where the corrugated tube T is fixed to the winding part 17 by the binding band B, the binding band B is restricted from coming off from the winding part 17 by the restriction wall 17a. The

  The inner side surfaces (contact surfaces that come into contact with the electric wires W) of the wire receiving portion 16 and the winding portion 17 are formed flat as shown in FIGS. The reason for this is to prevent the electric wire W from being damaged by the contact surface when the electric wire W is directly fixed to the winding portion 17. Here, as a method of fixing the corrugated tube T to the winding portion 17, it is generally performed to provide a protrusion that fits into the bellows portion of the corrugated tube T on the inner surface of the winding portion 17. However, in this embodiment, when the electric wire W is directly fixed to the winding portion 17, the electric wire W is damaged by the protrusion. Therefore, in this embodiment, the interior surfaces of the electric wire receiving portion 16 and the winding portion 17 are formed flat. It is doing.

  A part of the outer peripheral surface of the corrugated tube T is exposed laterally to a pair of side walls 18 (side walls that are provided with the cover locking pieces 15 in the cover main body 12) that are opposed to each other in the wire receiving portion 16. A stepped portion is provided. The stepped portion is formed by cutting the side wall 18 in a direction orthogonal to the direction in which the electric wire W is led out, and an edge 18a extending in a direction perpendicular to the direction in which the electric wire W is led out is a “target wall” in the present invention. Is configured. The target wall 18 a is set so as to be positioned between the cover body 12 and the winding portion 17. For this reason, the position where the end portion of the corrugated tube T coincides with the target wall 18a is set as the target position, so that the corrugated tube T does not enter the inside of the cover body 12 and the corrugated tube T is wound around the binding portion 17 It becomes possible to wind it reliably with B.

The present embodiment is configured as described above, and its operation will be described subsequently.
First, the electric wire cover 10 is attached to the rear end surface 31 of the connector housing 30. At this time, the corrugated tube T in which the electric wire W is housed is moved to a position away from the connector housing 30 in order to avoid contact with the electric wire W drawn from the rear end surface 31 of the connector housing 30. Subsequently, the wire entrance 10 is brought close to the rear end surface 31 of the connector housing in a state where the drawing direction of the wire W is bent by about 90 degrees so that the wire W is led out from the wire lead-out port 14 of the wire cover 10. Then, the guide rib 34 c of the cover lock portion 34 in the connector housing 30 is guided by being fitted into the guide groove 19 of the electric wire cover 10, and the lock protrusion 34 b of the cover lock portion 34 is fitted into the fitting hole 15 a of the cover locking piece 15. The electric wire cover 10 is fixed to the rear end surface 31 of the connector housing 30 by being fitted into and locked.

  Next, the corrugated tube T that has been moved to a position away from the cover body 12 in advance is brought closer to the cover body 12 side along the outer peripheral surface of the electric wire W. At this time, since the target wall 18 a is provided on the side wall 18 of the cover body 12, the end of the corrugated tube T is moved to a target position that matches the target wall 18 a, and the corrugated tube T is moved using the binding band B. The corrugated tube T (electric wire W) is fixed to the wire receiving portion 16 by being wound and fixed together with the winding portion 17. If it does in this way, since corrugated tube T does not penetrate into the inside of cover body 12 deeply, there is no possibility that electric wire W pulled out from rear end face 31 of connector housing 30 may be damaged by the end of corrugated tube T. .

  Then, the case where the electric wire W is directly fixed to the electric wire cover 10 without using the corrugated tube T is demonstrated. Since the operation of attaching the wire cover 10 to the rear end surface 31 of the connector housing 30 is the same as that when the corrugated tube T is used, the description thereof is omitted. The electric wire W can be directly fixed to the electric wire receiving portion 16 by winding the electric wire W together with the winding portion 17 and fixing it using the binding band B. At this time, since the inner surface of the wire receiving portion 16 is formed flat, there is no possibility that the wire W is damaged by the inner surface of the wire receiving portion 16.

  In any of the above cases, since the pair of regulating walls 17a are provided on both sides of the binding band B in the winding portion 17, even if the electric wire W or the corrugated tube T is pulled, the binding band There is no possibility that B is detached from the winding part 17 and the fixed state by the binding band B is released.

  As described above, in the present embodiment, in addition to being able to directly fix the electric wire W to the winding portion 17 by the binding band B, when the corrugated tube T is used, the end portion of the corrugated tube T is connected to the target wall 18a. By matching, it is possible to know that the target position has been reached. Therefore, there is no possibility that the corrugated tube T is inserted too deeply into the cover main body 12, and it is possible to prevent the electric wire W from being damaged by the end portion of the corrugated tube T.

  Moreover, since the inner side surfaces of the wire receiving portion 16 and the winding portion 17 are formed flat, when the electric wire W is directly fixed to the winding portion 17 without using the corrugated tube T, along with the winding by the binding band B Even if the electric wire W is pressed against the inner surface of the winding portion 17, there is no possibility of damage.

  Furthermore, even if the corrugated tube T is pulled in the lead-out direction of the electric wire W in a state where the corrugated tube T is wound around the winding portion 17 by the binding band B, the binding band B may be detached from the winding portion 17 by the regulating wall 17a. There is no.

<Embodiment 2>
Next, Embodiment 2 of the present invention will be described with reference to FIG.
The electric wire cover 20 in the present embodiment is obtained by partially changing the configuration of the side wall 18 of the electric wire cover 10 in the first embodiment, and description of other overlapping configurations, operations, and effects is omitted. That is, as shown in FIG. 9, the side wall 18 of the electric wire cover 20 extends a portion of the side wall 18 closer to the winding portion 17 than the target wall 18 a, and the extended portion slightly extends along the outer peripheral surface of the corrugated tube T. A pair of holding pieces 18b are provided by forming the inner side. At this time, the shortest distance between the two holding pieces 18b is set to be slightly smaller than the outer diameter of the corrugated tube T. In this case, since the corrugated tube T can be supported between the holding pieces 18b, when the corrugated tube T is wound together with the winding portion 17 with the binding band B, the corrugated tube T is held by hand so as not to move. Since it is not necessary to keep, it becomes easy to perform the fixing work by the binding band B.

<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) In the present embodiment, the target wall 18a is provided so as to form a stepped portion on the side wall 18 so that the outer peripheral surface of the corrugated tube T is exposed to the side. You may form by notching only the part in which 18a is formed in slit shape.

  (2) In the present embodiment, the side wall 18 is formed by cutting out in a direction intersecting with the direction in which the electric wire W is led out. However, according to the present invention, a through hole is provided in the side wall 18 and the inner peripheral wall of the through hole is formed. By setting it as the target wall 18a, you may confirm the position of the edge part of the corrugated tube T through a through-hole.

  (3) In the present embodiment, an example in which the end of the corrugated tube T is visually aligned with respect to the target wall 18a is illustrated, but according to the present invention, the end of the corrugated tube T with respect to the target wall 18a. You may make it hit.

  (4) Although the binding band B is illustrated as the binding tool in the present embodiment, according to the present invention, other members may be used as the binding tool, and may be fixed by, for example, tape winding.

  (5) In the second embodiment, both holding pieces 18b are formed slightly inward along the outer peripheral surface of the corrugated tube T. However, according to the present invention, both holding pieces 18b are made to be smaller than the outer diameter of the corrugated tube T. It is good also as a structure by which the corrugated tube T is hold | maintained in the press-fit state between both the holding pieces 18b by forming so that it may become parallel at a small space | interval.

  (6) Although a pair of restriction walls 17 a are provided in this embodiment, according to the present invention, only one restriction wall 17 a may be provided on the distal end side of the winding portion 17.

The side view which showed the state by which the corrugated tube was fixed by the electric wire cover in Embodiment 1. Back view Bottom view Perspective view of connector housing Side view of the wire cover Front view Back view Top view The top view of the electric wire cover in Embodiment 2

Explanation of symbols

DESCRIPTION OF SYMBOLS 10, 20 ... Electric wire cover 12 ... Cover main body 14 ... Electric wire outlet 16 ... Electric wire receiving part 17 ... Winding part 17a ... Restriction wall 18a ... Target wall 30 ... Connector housing 31 ... Rear end surface of connector housing B ... Bundling band (binding tool) )
T ... Corrugated tube (protective tube)
W ... Electric wire

Claims (4)

An electric wire cover for guiding an electric wire drawn from the rear end surface of the connector housing in a direction different from the drawing direction,
A cover body attached to cover the rear end surface of the connector housing;
An electric wire receiving portion for receiving the electric wire extending from an opening edge portion of the electric wire outlet opening for leading the electric wire from the inside of the cover body to the outside;
Winding that is provided on the leading end side of the electric wire in the electric wire receiving portion and is wound together with the electric wire by a binding tool or is wound together with a protective tube that accommodates the electric wire inside, thereby fixing the electric wire to the electric wire receiving portion. And
A target wall that is provided in the wire receiving portion and detects that an end of the protective tube has reached a target position ;
The target wall is formed by cutting out the electric wire receiving portion in a direction intersecting with a direction in which the electric wire is led out, and an end edge in the cutout direction of the target wall coincides with an end portion of the protective tube. An electric wire cover for detecting that the target position has been reached . The electric wire cover according to claim 1, wherein a contact surface with the electric wire in the electric wire receiving portion is formed to be flat along a direction in which the electric wire is led out. The said electric wire receiving part is an electric wire cover of Claim 1 or Claim 2 provided with a pair of holding piece which pinches | interposes and hold | maintains the said protection tube from both sides. The winding portion is provided in a pair at predetermined intervals in the lead-out direction of the wire, any one of claims 1 to 3 comprising a restricting wall for restricting that tie wrapped around the winding portion is disengaged The electric wire cover according to item.

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