JP5833941B2 - Wire cover - Google Patents

Description

  The present invention relates to an electric wire cover (wire cover) that covers an electric wire drawn from an electrical connector.

Conventionally, an electric wire cover has been used to bundle a large number of electric wires drawn in the same direction from terminals of an electric connector (hereinafter referred to as a connector) (for example, Patent Document 1). As shown in FIG. 5, a wire outlet 34 is opened at the end of the wire cover 33 assembled to the housing 32 of the connector 31 on the side from which the wire 36 is drawn, from which the wire 36 is drawn to the outside. . A wire fixing portion 35 having a gate-shaped cross section is projected from the opening peripheral portion of the wire outlet 34, and the wire fixing portion 35 is wound around a wire 36 and a binding band 37. In Patent Document 1, a hole through which the binding band 37 can be inserted is provided in the electric wire fixing portion 35, and the binding band 37 is inserted into the hole so that the electric wire 36 can be fixed even if the number of the electric wires 36 to be bundled is small. Yes.
Further, when vibration is applied to the electric wire cover due to vibration of a vehicle or the like on which the connector is mounted, the binding band may be displaced from the electric wire cover. As a typical means for preventing this, as shown in FIG. 6, U-shaped notches 40 are provided on both side surfaces of the wire fixing portion 39. The binding band 43 is inserted inside the notch 40 and held.

JP 2002-343497 A

In the process of assembling the electric wire cover as described above to the connector, or in the process of fitting the connector to the mating connector, the electric wire may be pulled upward. Is loaded. If a hole for inserting a binding band is provided in the electric wire fixing part 35 as in Patent Document 1 or if a notch 40 is provided as in FIG. 6, the rigidity is lowered and stress tends to concentrate around the hole and notch. Therefore, damage may occur when a large load is applied.
In particular, when the notch 40 opened at the lower end of the wire fixing portion 39 is formed to be large upward, only a narrow constricted portion 44 is left at the upper end of the wire fixing portion 39. Therefore, cracks are likely to occur in the direction indicated by the broken line in FIG.

  This invention is made | formed based on such a subject, and it aims at providing the electric wire cover which can hold | maintain a binding band reliably, ensuring rigidity.

An electric wire cover according to the present invention covers an electric wire connected to a terminal of an electric connector and fixes the electric wire with a binding band, and is assembled to the electric connector and accommodates the electric wire, and the electric wire in the cover main body And a wire fixing part that is wound together with the wires by a binding band.
The electric wire fixing portion includes an arrangement surface on which the binding band is arranged, and a holding surface that rises from the arrangement surface and faces one side surface of the binding band.
Then, the arrangement surface is inclined with respect to the height direction of the holding surface so that the electric wire is drawn out toward the holding surface and the thickness of the electric wire fixing portion on the arrangement surface is separated from the holding surface. It is getting thicker gradually.

According to this invention, when the binding band is wound around the electric wire fixing portion and the electric wire, the binding band on the arrangement surface is guided to the holding surface side according to the inclination of the arrangement surface and is hung on the holding surface rising from the arrangement surface. Since it is locked, the binding band is held on the holding surface and the arrangement surface. For this reason, even if a vibration is added, a cable tie can be fixed reliably, without a binding band removing easily from an electric wire fixing part.
As described above, according to the present invention, since the binding band can be securely held in the electric wire fixing portion without providing a notch, the rigidity of the electric wire fixing portion can be ensured.

In the electric wire cover of the present invention, the arrangement surface is preferably inclined so as to be lowered in the direction in which the electric wire is drawn out.
In this invention, the thickness of the electric wire fixing portion on the upper side of the arrangement surface, that is, the side opposite to the holding surface side can be increased. This part is required to have higher rigidity than the holding surface side with respect to the load applied to the electric wire fixing portion. For this reason, while securing the thickness of the part where higher rigidity is required in the electric wire fixing part and satisfying the rigidity, the binding band is securely held by the holding surface and the arrangement surface located on the opposite side of the part. be able to.

In the electric wire cover of the present invention, the electric wire fixing portion can be configured to have a guide surface that rises from the arrangement surface and faces the other side surface of the binding band.
In this way, since the binding band can be positioned between the holding surface and the guide surface, the binding band can be easily arranged on the arrangement surface.
Furthermore, if the holding surface and the guide surface are provided at an interval corresponding to the width of the binding band, the binding band is held without gaps in the groove formed by the holding surface, the arrangement surface, and the guide surface. The As a result, the binding band can be held more securely.

As described above, in the present invention, since the binding band can be reliably held between the holding surface and the arrangement surface, the conventional cutout into which the binding band arranged on the arrangement surface is inserted is not formed in the wire fixing portion. Or may be formed.
The arrangement surface of the electric wire fixing portion where the notch is not formed is continuous with a width equal to or larger than the width of the binding band from one end to the other end of the electric wire fixing portion in the length direction of the binding band.

  According to the electric wire cover of the present invention, it is possible to reliably hold the binding band to the electric wire fixing portion while ensuring rigidity.

The electric wire cover which concerns on 1st Embodiment of this invention is shown, (A) is a front view, (B) is the figure seen from the electric wire drawer end side. (A) is principal part sectional drawing, (B) is principal part sectional drawing of the electric wire cover which concerns on the modification of 1st Embodiment. (A) is principal part sectional drawing of the electric wire cover which concerns on the other modification of 1st Embodiment. (B) is principal part sectional drawing of the electric wire cover which made the inclination direction of the arrangement | positioning surface reverse to FIG. 2 (A). (A) is principal part sectional drawing of the electric wire cover which concerns on 2nd Embodiment of this invention. (B) is principal part sectional drawing of the electric wire cover which concerns on the modification of this invention. It is a side view which shows the conventional electric wire cover and connector. It is principal part sectional drawing of the conventional electric wire cover.

Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings.
[First Embodiment]
The electric wire cover 1 of this embodiment is used by being assembled to the connector 2.
Since the connector 2 having a general structure including a housing 21 that accommodates a plurality of terminals (not shown) can be applied, the description of the connector 2 including the assembly structure to the wire cover 1 is omitted.

The electric wire cover 1 includes a cover main body 4 that covers the electric wires 3 connected to the terminals of the connector 2, and an electric wire fixing portion in which the electric wires 3 drawn from one end (drawing end) 4 </ b> A of the cover main body 4 are fixed by a binding band 5. 7 is a resin molded product.
The electric wire 3 is drawn out from each terminal in the housing 21 toward the electric wire fixing portion 7, and is further drawn out from there to the outside of the electric wire cover 1. FIG. 1 shows only the portion of the electric wire 3 exposed from the electric wire fixing portion 7.
The cover main body 4 has an accommodating space 6 for accommodating the plurality of electric wires 3 inside thereof. The cover body 4 is assembled to the connector 2 so as to surround the rear end 21 </ b> A side of the housing 21.

The electric wire fixing portion 7 is provided on the drawing end 4 </ b> A of the cover body 4 so as to protrude in the direction in which the electric wire 3 is drawn. The electric wire fixing part 7 is formed in an arc shape so as to surround the upper side of the bundle 30 of electric wires 3. In addition, the shape of the electric wire fixing | fixed part 7 is not restricted to circular arc shape, but is arbitrary.
The resin binding band 5 is wound around the electric wire 3 partially surrounded by the electric wire fixing portion 7 to bind the electric wire 3. The binding band 5 is obtained by connecting both ends of a band material, which is a long member having a rectangular cross section, by appropriate means such as welding.

  As shown in FIG. 2, the electric wire fixing portion 7 includes an arrangement surface 7S on which the binding band 5 is arranged, and first ribs 8 and second ribs 9 that rise from the arrangement surface 7S in a flange shape. The first rib 8 is located at the distal end 7 </ b> A of the electric wire fixing portion 7, and the second rib 9 is located at the base end 7 </ b> B of the electric wire fixing portion 7 at a distance from the first rib 8. Note that the positions of the first ribs 8 and the second ribs 9 are not limited to the above as long as the binding band 5 can be arranged on the arrangement surface 7S. The distance between the first rib 8 and the second rib 9 in this embodiment is wider than the width of the binding band 5.

As shown in FIG. 2A, the arrangement surface 7 </ b> S is inclined so as to be lowered in the direction in which the electric wire 3 is drawn out, and forms an acute angle with the first rib 8.
Therefore, than the thickness T ₁ of the wire fixing portion 7 of the first rib 8 side toward the wall thickness T ₂ of the wire fixing portion 7 in the second rib 9 side thick. Thickness T ₁ is, in this embodiment, although the same as the thickness of the cover body 4 can be arbitrarily set.
Moreover, since the notch is not formed in the arrangement surface 7S, the first rib 8 and the first rib 8 are arranged from the one end 71 to the other end 72 (FIG. 1B) of the wire fixing portion 7 in the length direction of the binding band 5. It is continuously continuous with a width corresponding to the distance between the two ribs 9. The arrangement surface 7S is inclined as described above, thereby constituting a cylindrical surface having a diameter reduced from the second rib 9 side toward the first rib 8 side.

The heights of the first rib 8 and the second rib 9 from the back surface of the arrangement surface 7S are equal. The 1st rib 8 and the 2nd rib 9 are provided in the uniform height over the range from the one end 71 of the circumferential direction of the electric wire fixing | fixed part 7 to the other end 72 (FIG. 1 (B)).
Since the arrangement surface 7S is inclined as described above, it is larger height H ₁ of the first rib 8 from the placement surface than the height H ₂ of the second rib 9 7S from the arrangement surface 7S. The height H ₁ of the side surface 8 A of the first rib 8 is sufficiently larger than the thickness of the binding band 5.

The groove 10 is configured by the arrangement surface 7 </ b> S, the first rib 8, and the second rib 9 described above.
The groove 10 includes an arrangement surface 7 </ b> S that is a bottom surface thereof, a side surface 8 </ b> A that faces the second rib 9 of the first rib 8, and a side surface 9 </ b> A that faces the first rib 8 of the second rib 9.

When assembling the wire cover 1 having the above configuration to the connector 2, first, the direction of the wire 3 is aligned with the drawing end 4 </ b> A side of the housing 21, and then the wire cover 1 is put on the housing 21, and the wire fixing portion 7 Pull 3 out. Further, the electric wire cover 1 is locked and assembled to a locking member (not shown) of the connector 2.
Next, the binding band 5 (band material) is wound around the wire fixing portion 7 and the wire 3. At this time, the binding band 5 is positioned on the arrangement surface 7S by the first rib 8 and the second rib 9, and is inserted into the groove 10. Since the second rib 9 rises obliquely from the arrangement surface 7S, when the binding band 5 is inserted into the groove 10 from the second rib 9 side, the binding band 5 is drawn into the arrangement surface 7S.

Inclined placement surface 7S the arranged binding band 5 is guided toward the tip 7A side of the wire fixing portion 7, a first rib 8 provided at a height H ₁ is sufficiently larger than the thickness of the binding band 5 Is hooked on the side surface 8A.
Subsequently, when both ends of the binding band 5 (band material) are connected, the electric wires 3 are bound by the binding band 5. Accordingly, the end portion of the binding band 5 is held by the first rib 8 so that the end portion of the binding band 5 is sandwiched by the corner portion V formed by the side surface 8A of the first rib 8 and the arrangement surface 7S. Therefore, even if vibration is applied to the connector 2, the binding band 5 is securely held by the first rib 8 and the arrangement surface 7 </ b> S without being detached from the side surface 8 </ b> A of the first rib 8. 3 is stably fixed to the electric wire fixing part 7.
The assembly of the wire cover 1 is completed by the above operation.

When the electric wire 3 is pulled when the electric wire cover 1 is assembled or when the connector 2 to which the electric wire cover 1 is assembled is fitted to the mating connector, the electric wire 3 is attached to the electric wire fixing portion 7 as described above. The load may be applied to the wire fixing part 7 due to contact. The load is generated, for example, in the direction of the arrow in FIG. However, in the wire fixing part 7, since resin exists in the part corresponding to the notch 40 shown in FIG. 6, stress concentration does not occur and sufficient rigidity is ensured.
Moreover, when a load is applied, since the placement surface having the largest second rib 9 side thickness T ₂ is large resulting stress in the 7S, rigidity in the thickness direction is high. Therefore, even when a load is applied, the electric wire fixing portion 7 is not easily cracked as shown in FIG.

As described above, according to the present embodiment, the arrangement surface 7S is an inclined surface, and one side surface of the binding band 5 is locked to the side surface 8A of the first rib 8 so that the notch that has been conventionally formed can be obtained. The binding band 5 can be reliably held on the electric wire fixing portion 7 while ensuring sufficient rigidity.
Moreover, by inclining the arranged surfaces 7S as down toward the tip 7A side of the wire fixing portion 7, while satisfying the stiffness and ensure more thickness T ₂ of the second rib 9 side rigidity is required, The binding band 5 can be reliably held by the side surface 8A of the first rib 8 and the arrangement surface 7S located on the opposite side.
Further, since the breakage is prevented by securing the rigidity, it is not necessary to manage the work so as not to cause the breakage when the electric wire cover is assembled, and the breakage inspection process can be reduced.

Here, without making the arrangement surface 7S an inclined surface, the entire bottom portion of the groove 10 is thickened, and the height of the first rib 8 and the second rib 9 rising from the arrangement surface 7S is greater than the thickness of the binding band 5. Although it may be ensured, the height of the first rib 8 and the second rib 9 can be suppressed by inclining the arrangement surface 7S. For this reason, it is possible to comply with the height restrictions often required for electrical connectors and electric wire covers provided in vehicles.
The inclination angle of the arrangement surface 7S is appropriately determined according to the height of the first rib 8 and the second rib 9, the width and thickness of the binding band 5, and the like.

Moreover, instead of providing the flange-shaped second rib 9 that forms the groove 10 between the first rib 8 as in the above embodiment, as shown in FIG. A groove 11 recessed from the surface 73 may be provided. The binding band 5 can be positioned by the side surface 8A of the first rib 8 which is one of the opposing inner walls of the groove 11 and the guide surface 19A which is the other inner wall facing it, as in the above embodiment.
On the other hand, the second rib 9 can be eliminated as shown in FIG. Even in this case, the binding band 5 on the inclined arrangement surface 7 </ b> S can be locked by the side surface 8 </ b> A of the first rib 8.

  In the above embodiment, the first rib 8 and the second rib 9 are formed continuously from one end 71 to the other end 72 in the circumferential direction of the wire fixing portion 7, but intermittent in the circumferential direction of the wire fixing portion 7. The 1st rib 8 and the 2nd rib 9 can also be provided in this. Moreover, the 1st rib 8 and the 2nd rib 9 can also be provided only in the specific location (for example, center part of the circumferential direction) of the electric wire fixing part 7. FIG. Thus, as long as the binding band 5 can be held between the side surface 8A and the arrangement surface 7S, the place where the first rib 8 is provided is arbitrary. Further, the location where the second rib 9 is provided is also arbitrary, and the location where the first rib 8 is provided may be different from the location where the second rib 9 is provided.

FIG. 3B shows a configuration in which the direction of the inclination of the arrangement surface 7S of the above embodiment is reversed. In this configuration, contrary to the above, the arrangement surface 17S is inclined so as to be lowered in the direction opposite to the direction in which the electric wire 3 is drawn. Therefore, than the thickness T ₂ of the second rib 19 side toward the wall thickness T ₁ of the first rib 18 side thick. Further, the height H ₂ of the second rib 19 is higher than the height H ₁ of the first rib 18.
If comprised in this way, the binding band 5 can be hold | maintained by the side surface 9A of the 2nd rib 19 in which the side surface of the binding band 5 is latched, and the arrangement | positioning surface 17S.

[Second Embodiment]
Next, the electric wire cover of 2nd Embodiment of this invention is demonstrated.
In addition, about the structure similar to 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.
As shown in FIG. 4A, in the electric wire fixing portion 17 in the present embodiment, the first rib 8 and the second rib 9 rise from the arrangement surface 7S with an interval corresponding to the width of the binding band 5. .

In the present embodiment, the binding band 5 is held in the groove 15 formed between the first rib 8 and the second rib 9.
When the binding band 5 is wound around the electric wire fixing portion 7 and the electric wire 3 and both ends thereof are connected, one side surface of the binding band 5 contacts the side surface 8A of the first rib 8, and the binding band contacts the side surface 9A of the second rib 9. 5 is in contact with the other side surface, and the back surface of the binding band 5 is in contact with the arrangement surface 7S, so that the binding band 5 is held in the groove 15 without a gap. Thereby, the binding band 5 can be reliably held by the electric wire fixing portion 17.

  In addition, the 1st rib 8 and the 2nd rib 9 may stand up from the arrangement | positioning surface 7S diagonally, or may stand up upright. When the first rib 8 rises obliquely from the arrangement surface 7S, a gap may be formed between the first rib 8 and the side surface 8A of the first rib 8 in a part of the binding band 5 in the thickness direction. However, as long as the binding band 5 is locked to the side surface 8A of the first rib 8 and the binding band 5 can be held on the side surface 8A and the arrangement surface 7S, it can be allowed.

As described above, the present invention provides a means for securely holding the binding band 5 without forming a notch, but the present invention also allows a notch to be formed in the wire fixing portion.
For example, in the electric wire cover shown in FIG. 4B, an arc-shaped notch 29 is formed on the outer peripheral surface 73 of the electric wire fixing portion 7. A similar notch 29 is also formed on the other outer peripheral surface (not shown). The notch 29 is formed in a region between the first rib 8 and the second rib 9 in the electric wire fixing portion 7 and has a size that does not hinder the rigidity of the electric wire fixing portion 7.
When the binding band 5 is wound around the electric wire fixing portion 7, the binding band 5 is inserted inside the notch 29. Then, the binding band 5 is more reliably held on the wire fixing portion 7 by the side surface 8A of the first rib 8, the arrangement surface 7S, and the notch 29.

  In addition to the above description, the configurations described in the above embodiments can be selected or modified as appropriate to other configurations without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Electric wire cover 2 Connector 3 Electric wire 4 Cover main body 4A Draw-out end 5 Binding band 6 Accommodating space 7, 17 Electric wire fixing part 7S, 17S Arrangement surface 8, 18 First rib 8A Side surface (holding surface)
9, 19 2nd rib 9A side surface (guide surface)
10, 11, 15 groove 29 notch

Claims (4)

An electric wire cover for covering the electric wire connected to the terminal of the electric connector and fixing the electric wire with a binding band,
A cover body that is assembled to the electrical connector and accommodates the electric wire;
An electric wire fixing part that is provided on the lead-out side of the electric wire in the cover body, and is wound together with the electric wire by the binding band,
The wire fixing portion is
An arrangement surface on which the binding band is arranged, and a holding surface that rises from the arrangement surface and faces one side surface of the binding band,
The arrangement surface is inclined with respect to a height direction of the holding surface so as to be lowered toward the holding surface and in a direction in which the electric wire is drawn out ,
The wall thickness of the wire fixing portion on the arrangement surface gradually increases as the distance from the holding surface increases.
An electric wire cover characterized by that. The wire fixing portion includes a guide surface that rises from the arrangement surface and faces the other side surface of the binding band.
The electric wire cover according to claim 1. The holding surface and the guide surface are provided at an interval corresponding to the width of the binding band.
The electric wire cover according to claim 2 . The arrangement surface is continuous from one end to the other end of the wire fixing portion in the length direction of the binding band without forming a notch.
The electric wire cover according to any one of claims 1 to 3 .

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