JP6876461B2 - Protector and protector manufacturing method - Google Patents

Description

The present invention relates to a protector accommodating a wire harness and a method for manufacturing the protector.

Generally, when arranging a wire harness to a vehicle, a protector for protecting the wire harness is provided in a portion where an external force is easily applied. As such a protector, a protector having a bottom wall (bottom plate portion) and a pair of side walls (standing walls) and formed in a gutter shape has been proposed (see, for example, Patent Document 1). The protector described in Patent Document 1 accommodates and protects the wire harness inside, and positions the wire harness by hooking a positioning portion protruding from the inner surface into a concave groove of a corrugated tube of the wire harness. It is configured.

Japanese Unexamined Patent Publication No. 2012-143027

In the configuration in which the positioning portion is hooked in the concave groove of the corrugated tube as in the protector described in Patent Document 1, the wire harness can be positioned so as not to move in the longitudinal direction, but the twist due to the rotation of the wire harness is not present. It cannot be prevented. Further, the portion of the wire harness corresponding to the positioning portion must be formed in a bellows shape, and positioning cannot be performed depending on the type of the wire harness. Therefore, an exterior component such as a clip having a locking projection is provided on the wire harness, a bracket is provided on the vehicle body panel, and the locking projection of the exterior component is locked to the bracket to position the wire harness and suppress twisting. The configuration to be used is conceivable.

However, in a configuration in which the wire harness is fixed to the vehicle body on the outside of the protector, the wire harness may move or rotate relative to the protector.

An object of the present invention is to provide a protector that easily suppresses the movement and rotation of a wire harness and a method for manufacturing the protector.

In order to solve the above problems and achieve the object, the invention according to claim 1 is a protector having a bottom plate portion and a pair of standing wall portions, formed in a gutter shape, and accommodating a wire harness. A plate-shaped bracket portion projecting adjacent to the standing wall portion is integrally formed with the bottom plate portion at the end portion in the longitudinal direction of the bottom plate portion, and the wire harness portion is formed on the bracket portion. A hole-shaped locking opening for locking the exterior parts attached to the vehicle is formed, and the locking opening extends to the bottom plate portion and the opening width does not decrease toward the base end side. The protector is formed in the above-mentioned bottom plate portion, and is characterized in that a continuous through hole is formed in the locking opening portion.

The invention according to claim 2 is the invention according to claim 1 , wherein the bottom plate portion is provided with a plate-shaped reinforcing portion that is connected to both end edges of the bracket portion and extends so as to intersect the bracket portion. It is characterized by being.

The invention according to claim 3 is characterized in that, in the invention according to claim 1 or 2 , the locking opening is formed in a rectangular shape.

The invention according to claim 4 is a protector manufacturing method for manufacturing a protector having a bottom plate portion and a pair of standing wall portions and formed in a gutter shape to accommodate a wire harness, and has a slit shape. The first type having an upper surface forming portion in which the groove portion is formed and the second type having a lower surface forming portion in which a plate-shaped protrusion portion whose width does not increase toward the tip side is formed are used. With respect to the above, the first mold and the second mold are inserted so that the upper surface forming portion and the lower surface forming portion are separated from each other while inserting the protruding portion in the width direction and the protruding direction so as not to abut on the inner peripheral edge. The bottom plate portion is formed by the first cavity portion formed between the upper surface forming portion and the lower surface forming portion, and the second cavity formed between the protruding portion and the groove portion is formed. It is characterized in that a plate-shaped bracket portion protruding from the bottom plate portion is integrally formed with the bottom plate portion while having a locking opening for locking the exterior parts attached to the wire harness. It is a protector manufacturing method.

According to the invention of claim 1, a bracket portion is provided on the bottom plate portion, and the wire harness is attached to the protector by locking the exterior component attached to the wire harness by the locking opening of the bracket portion. Can be fixed. At this time, since the bracket portion is arranged at the end portion in the longitudinal direction so as to be adjacent to the erection wall portion, the wire harness can be fixed at the end portion of the protector, and the wire harness is fixed outside the protector. It is easy to suppress the movement and rotation of the wire harness as compared with the configuration.
Further, a first type having an upper surface forming portion in which a slit-shaped groove portion is formed and a second type having a lower surface forming portion in which a plate-shaped protrusion portion whose width does not increase toward the tip side is formed. By using it, a plate-shaped bracket portion having a locking opening can be integrally formed with the bottom plate portion to open the mold. That is, the first mold and the second mold are molded so that the upper surface forming portion and the lower surface forming portion are separated from each other while inserting the protrusion into the groove so as not to abut on the inner peripheral edge in the width direction and the protruding direction. When closed, a bracket having a bottom plate portion formed by a first cavity portion between the upper surface forming portion and the lower surface forming portion and a locking opening formed by a second cavity portion formed between the protrusion portion and the groove portion. Part can be formed.
At this time, by forming the protruding portion into a shape in which the width does not increase toward the tip side, the mold can be opened after the bracket portion is formed. As a result, a locking opening is formed in which the opening width does not decrease toward the proximal end side. As described above, by forming the bracket portion integrally with the bottom plate portion by the first mold and the second mold, it is possible to reduce the manufacturing man-hours for providing the bracket portion.

According to the second aspect of the present invention, the strength of the bracket portion can be improved by providing the reinforcing portion so as to be connected to both end edges of the bracket portion. As a result, even if a large force is applied to the bracket portion when the locking projection of the exterior component is press-fitted into the locking opening, it is unlikely to be damaged and a large locking force can be easily obtained.

According to the invention of claim 3, the locking projections of the exterior parts of the wire harness can be locked by a pair of substantially parallel sides of the inner peripheral edge of the rectangular locking opening that face each other in the longitudinal direction. it can. That is, a locking projection having a pair of locking arms that are brought into contact with each other in the opposite directions of the pair of sides can be locked to the locking opening.

According to the invention of claim 4, as described above, the bracket portion can be integrally formed with the bottom plate portion by the first mold and the second mold, and the manufacturing man-hours for providing the bracket portion can be reduced. Can be done.

It is a perspective view which shows the protector which concerns on embodiment of this invention. It is a side view which shows the protector. It is a perspective view which shows the main part of the protector in an enlarged manner. It is a side view which shows the bracket part of the protector. It is a perspective view which shows the exterior part of the wire harness which is locked to the bracket part. It is sectional drawing which shows the appearance that the exterior part was locked by the bracket part. It is sectional drawing which shows how the protector is formed by a pair of molds. It is a top view which shows one of the pair of molds. It is a top view which shows the other of the pair of molds.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a protector 1 according to an embodiment of the present invention, FIG. 2 is a side view showing the protector 1, and FIG. 3 is an enlarged perspective view showing a main part of the protector 1. FIG. 4 is a side view showing the bracket portion 4 of the protector 1, FIG. 5A is a perspective view showing an exterior component 200 of a wire harness locked to the bracket portion 4, and FIG. 5B is a perspective view showing the bracket portion 4. 4 is a cross-sectional view showing how the exterior component 200 is locked by 4, FIG. 6 is a cross-sectional view showing how the protector 1 is formed by a pair of molds M1 and M2, and FIG. 7A is a cross-sectional view showing how the protector 1 is formed by a pair of molds M1 and M2. FIG. 7B is a top view showing M1 and FIG. 7B is a top view showing the other M2 of the pair of molds.

The protector 1 of the present embodiment accommodates and protects the wire harness allocated to the vehicle, and as shown in FIGS. 1 and 2, the protector 1 has a bottom plate portion 2 and a pair of standing wall portions 3A and 3B. And, for example, it is formed in a gutter shape by an insulating synthetic resin. The wire harness is housed in the gutter-shaped protector 1, and the cover member 20 is attached to the protector 1 so as to face the bottom plate portion 2 (that is, the end of the standing wall portions 3A and 3B opposite to the bottom plate portion 2). By attaching the cover member 20 to the edge), the protector 1 and the cover member 20 form a square tubular protector 10.

The tubular protector 10 is arranged at a position where an external force is applied (for example, under a seat) when the passenger steps on it or loads a load on it, and protects the wire harness from such an external force. Further, the tubular protector 10 is fixed to the vehicle body panel at a fixing portion formed on the bottom plate portion 2 or the like. The tubular protector 10 is not limited to the one in which the wire harness is arranged along the horizontal plane, and may be the one in which the wire harness is arranged three-dimensionally.

The bottom plate portion 2 has a wire harness mounted on the upper surface 2A (the surface on which the standing wall portions 3A and 3B protrude), has a shape corresponding to the wiring shape of the wire harness, and is a protector 1. It has an extension portion (end portion) 21 extending in the longitudinal direction from the standing wall portions 3A and 3B on one end side of the above. A plate-shaped bracket portion 4 projecting toward the upper surface 2A is integrally formed at a position of the extension portion 21 adjacent to one of the standing wall portions 3A. On the upper surface 2A of the bottom plate portion 2, plate-shaped reinforcing portions 5A and 5B which are connected to both end edges of the bracket portion 4 and which are substantially orthogonal to the bracket portion 4 are integrally formed.

The pair of standing wall portions 3A and 3B are integrally erected from both end edges of the bottom plate portion 2, and a wire harness is arranged between them. Further, the erection wall portions 3A and 3B have a shape that is appropriately curved according to the wiring shape of the wire harness.

As shown in FIGS. 3 and 4, the bracket portion 4 is formed in a rectangular shape in a side view as a whole, and a hole-shaped locking opening 41 for locking an exterior component attached to the wire harness is formed. ing. The locking opening 41 is formed in a rectangular shape, and has a substantially constant opening width from the base end side (bottom plate portion 2 side) of the bracket portion 4 to the tip end side. Further, the locking opening 41 extends to the bottom plate portion 2.

The exterior component attached to the wire harness is, for example, an exterior component 200 as shown in FIG. 5A. The exterior component 200 is provided on the tubular portion 201 wound around the outer circumference of the wire harness and on the outside of the tubular portion 201. It also has a locked portion 202. As shown in FIG. 5B, a slit portion 203 that opens toward the lower side (bottom plate portion 2 side) is formed between the tubular portion 201 and the locked portion 202. Further, the locked portion 202 has a locking projection 202A that protrudes toward the tubular portion 201 and is located at the slit portion 203.

The exterior component 200 is brought closer to the tubular protector 10 along the direction perpendicular to the surface of the bottom plate portion 2, and the bracket portion 4 is accommodated in the slit portion 203 as shown in FIG. 5B, whereby the locking opening of the bracket portion 4 is opened. The locking projection 202A is locked by the upper edge portion on the inner peripheral edge of 41.

The central portion of the reinforcing portions 5A and 5B in the width direction is connected to the edge of the bracket portion 4, and has a width direction dimension larger than the thickness of the bracket portion 4. That is, the bracket portion 4 and the reinforcing portions 5A and 5B are formed in an H shape when viewed from the plate thickness direction of the bottom plate portion 2.

The extension portion 21 of the bottom plate portion 2 is formed with a through hole 22 continuous with the locking opening 41. The through hole 22 has a width direction dimension equal to the opening width of the locking opening 41, and has a thickness direction dimension equal to or larger than the plate thickness of the bracket portion 4. That is, the through hole 22 is formed so that when the bottom plate portion 2 is viewed from the lower surface 2B side, the entire inner peripheral edge of the locking opening 41 can be seen.

Here, a method of manufacturing the protector 1 of the present embodiment will be described with reference to FIG. The first mold M1 and the second mold M2 are molds, respectively, and the protector 1 is formed by closing the first mold M1 and the second mold M2 and pouring a resin material into the cavity. In the following, the parts for molding the bottom plate portion 2, the bracket portion 4, and the reinforcing portions 5A and 5B of the first mold M1 and the second mold M2 will be described, but the first mold M1 and the second mold M2 will be described. The standing wall portions 3A and 3B may also be formed, or the standing wall portions 3A and 3B may be formed by using other molds.

The first type M1 has an upper surface forming portion M11 forming the upper surface 2A of the bottom plate portion 2, and the upper surface forming portion M11 has a depth corresponding to the height of the bracket portion 4 as shown in FIG. 7A. A slit-shaped groove M12 having is formed. As shown in FIG. 6, the groove portion M12 has a cross-sectional shape in which rectangular corners are chamfered. Further, in the upper surface forming portion M11, continuous auxiliary groove portions M13 and M14 are formed at both ends of the groove portion M12, and the groove portion M12 and the auxiliary groove portions M13 and M14 are formed in an H shape.

The second type M2 has a lower surface forming portion M21 forming the lower surface 2B of the bottom plate portion 2, and the lower surface forming portion M21 has a height of the locking opening 41 from the bottom plate portion 2 as shown in FIG. 7B. A plate-shaped protrusion M22 having a height corresponding to the height is formed. The protrusion M22 is formed in a rectangular shape and has a substantially constant width from the proximal end side to the distal end side. Further, the thickness of the protrusion M22 is about the same as the dimension of the groove M12 in the short side direction.

The first type M1 is inserted so that the upper surface forming portion M11 and the lower surface forming portion M21 are separated from each other while inserting the protruding portion M22 into the groove portion M12 so as not to abut on the inner peripheral edge of the groove portion M12 in the width direction and the protruding direction. And the second type M2 are closed. As a result, the first cavity portion C1 is formed between the upper surface forming portion M11 and the lower surface forming portion M21, and the second cavity portion C2 is formed between the protrusion M22 and the groove M21. Further, the auxiliary groove portions M13 and M14 form a third cavity portion.

By pouring a resin material into the cavity formed by the first type M1 and the second type M2, the bottom plate portion 2 is formed by the resin material filled in the first cavity portion C1 and is filled in the second cavity portion C2. The bracket portion 4 is formed by the resin material, and the reinforcing portions 5A and 5B are formed by the resin material filled in the third cavity portion. Since the protrusion M22 has a substantially constant width from the proximal end side to the distal end side, the inside of the bracket portion 4 is formed when the resin material is cured to open the molds between the first mold M1 and the second mold M2. The protrusion M22 can be pulled out from.

The portion of the groove M12 in which the protrusion M22 is inserted becomes the locking opening 41, and the portion between the upper surface forming portion M11 and the lower surface forming portion M21 where the protrusion M22 exists becomes the through hole 22. ..

According to this embodiment, there are the following effects. That is, the bracket portion 4 is provided on the bottom plate portion 2, and the wire harness is fixed to the protector 1 by locking the exterior parts attached to the wire harness by the locking opening 41 of the bracket portion 4. be able to. At this time, since the bracket portion 4 is provided on the extension portion 21 and is adjacent to the erection wall portion 3A, the wire harness can be fixed at the end portion of the protector 1, and the wire harness is fixed on the outside of the protector 1. Compared with, it is easy to suppress the movement and rotation of the wire harness.

Further, since the locking opening 41 extends to the bottom plate portion 2 and has a substantially constant opening width, and the through hole 22 is formed in the bottom plate portion 2, the first type M1 and the second type M2 are used. The bracket portion 4 and the bottom plate portion 2 can be integrally formed and the mold can be opened, so that the manufacturing man-hours for providing the bracket portion 4 can be reduced.

Further, since the reinforcing portions 5A and 5B are formed so as to be connected to both end edges of the bracket portion 4, the strength of the bracket portion 4 can be improved. As a result, even if a large force is applied to the bracket portion 4 when the locking projection 202A of the exterior component 200 is press-fitted into the locking opening 41, it is unlikely to be damaged and a large locking force can be easily obtained.

Further, since the locking opening 41 has a rectangular shape, a pair of locking arms that are brought into contact with each other in the longitudinal direction are locked by a pair of substantially parallel sides of the inner peripheral edge that face each other in the longitudinal direction. Can be done.

The present invention is not limited to the above-described embodiment, but includes other configurations and the like that can achieve the object of the present invention, and the following modifications and the like are also included in the present invention.

For example, in the above-described embodiment, the reinforcing portions 5A and 5B are provided on both end edges of the bracket portion 4, and the bracket portion 4 and the reinforcing portions 5A and 5B are formed in an H shape. May have other shapes. For example, by connecting the edge of the bracket portion and the edge of the reinforcing portion, the pair of reinforcing portions may be configured to protrude from the same surface side of the bracket portion, or may be configured to project from the opposite surface side to each other. May be. Further, when the bracket portion has sufficient strength, the reinforcing portion may not be provided. The strength of the bracket portion is determined according to the thickness, height, width, size of the locking opening, material, and the like, and a reinforcing portion may be provided as needed.

Further, in the above embodiment, the locking opening 41 is formed in a rectangular shape and has a substantially constant opening width from the proximal end side to the distal end side, but the locking opening is formed on the proximal end side. As long as the opening width does not decrease toward the direction of the above-described embodiment, the mold can be opened in the same manner as in the above embodiment. That is, the locking opening may be formed so that the opening width becomes smaller toward the tip side, and a portion where the opening width becomes substantially constant and a portion where the opening width becomes smaller toward the tip side. It may be a combination of shapes. The locking opening may have an appropriate shape depending on the shape of the locking projection on the mating side, the strength of the bracket portion, and the like.

Further, in the above-described embodiment, the bracket portion 4 is formed integrally with the bottom plate portion 2, but a bracket portion formed separately may be attached to the bottom plate portion. In such a configuration, the locking opening may have an arbitrary shape (that is, it may have a portion where the opening width becomes smaller toward the proximal end side) and penetrates the bottom plate portion. The holes may not be formed.

In addition, the best configuration, method, and the like for carrying out the present invention are disclosed in the above description, but the present invention is not limited thereto. That is, although the present invention is particularly illustrated and described primarily with respect to a particular embodiment, it does not deviate from the scope of the technical idea and purpose of the present invention and has a shape with respect to the embodiments described above. , Materials, quantities, and other detailed configurations can be modified by those skilled in the art. Therefore, the description that limits the shape, material, etc. disclosed above is merely an example for facilitating the understanding of the present invention, and does not limit the present invention. Therefore, those shapes, materials, etc. The description by the name of the member which removes a part or all of the limitation such as is included in the present invention.

1 Protector 2 Bottom plate 22 Through hole 3A, 3B Standing wall 4 Bracket 5A, 5B Reinforcing part M1 First type M11 Top surface forming part M12 Groove part M2 Second type M21 Bottom surface forming part M22 Protrusion part C1 First cavity part C2 Second cavity

Claims (4)

A protector that has a bottom plate and a pair of standing walls and is formed in a gutter shape to accommodate a wire harness.
At the end of the bottom plate portion in the longitudinal direction, a plate-shaped bracket portion protruding so as to be adjacent to the standing wall portion is formed integrally with the bottom plate portion.
The bracket portion is formed with a hole-shaped locking opening for locking an exterior component attached to the wire harness .
The locking opening is formed so as to extend to the bottom plate portion and the opening width does not decrease toward the base end side.
A protector characterized in that a continuous through hole is formed in the locking opening in the bottom plate portion. The protector according to claim 1 , wherein the bottom plate portion is provided with a plate-shaped reinforcing portion that is connected to both end edges of the bracket portion and extends so as to intersect the bracket portion. The protector according to claim 1 or 2 , wherein the locking opening is formed in a rectangular shape. It is a protector manufacturing method for manufacturing a protector having a bottom plate portion and a pair of standing wall portions and formed in a gutter shape to accommodate a wire harness.
The first type having an upper surface forming portion in which a slit-shaped groove portion is formed, and
Using the second type, which has a lower surface forming portion in which a plate-shaped protrusion that does not increase in width toward the tip side is formed, is used.
The first mold and the second mold are inserted so that the upper surface forming portion and the lower surface forming portion are separated from each other while inserting the protrusion into the groove so as not to abut on the inner peripheral edge in the width direction and the protruding direction. Close the mold and mold,
The bottom plate portion is formed by the first cavity portion formed between the upper surface forming portion and the lower surface forming portion, and the wire is formed by the second cavity portion formed between the protrusion portion and the groove portion. A protector manufacturing method, characterized in that a plate-shaped bracket portion that has a locking opening for locking an exterior component attached to a harness and protrudes from the bottom plate portion is integrally formed with the bottom plate portion. ..

Images