JP2021158706A - Corrugate connection part, exterior component with corrugate connection part, and corrugate connection structure - Google Patents

Abstract

To provide a corrugate connection part capable of preventing a corrugate from coming off, an exterior component with the corrugate connection part, and a corrugate connection structure.SOLUTION: A corrugate connection part 10 for connecting an end of a corrugate 4, comprises: a fitting portion 20 to which the end of the corrugate 4 is fitted; and a lid portion 30 closing a mounting port 20a for mounting the corrugate 4 to the fitting portion 20. The fitting portion 20 includes: a set of ribs 24 which is fitted into a set of recesses 41 of the corrugate 4; and a wall 28 including an arrangement opening 28a for arranging a harness 1 to be inserted into the corrugate 4 and being opposed to a tip end face of the mounted corrugate 4. Deformation suppression portions 29 which protrude toward the inside of the mounted corrugate 4 and suppress deformation of the corrugate 4 are provided at a peripheral edge of the arrangement opening 28a in the wall 28.SELECTED DRAWING: Figure 10

Description

The present invention relates to a corrugated connecting portion capable of preventing the corrugated from coming off, an exterior component provided with the corrugated connecting portion, and a corrugated connecting structure.

Conventionally, corrugates and protectors have been known to protect electric wires. The corrugated is a flexible exterior component that covers the electric wire, and has a function of protecting the electric wire. The protector is an exterior component that does not have flexibility to cover the electric wire, and has an electric wire protection function and a route regulation function.

In the wiring route of a long electric wire, a part where only the electric wire is to be protected and a part where the electric wire is to be protected and the route is regulated are generally mixed. Therefore, a connection point between the corrugate and the protector is provided, and at the connection point, the end portion of the corrugate is arranged inside the protector. Patent Document 1 discloses a configuration in which a rib is provided inside the protector and the rib fits into a recess of the corrugated.

By the way, the corrugate is provided with a cut (hereinafter referred to as "slit") for inserting an electric wire inside along the axial direction. Therefore, when both sides of the slit are overlapped with each other due to the deformation of the corrugated, the outer diameter of the corrugated is reduced, so that the rib hooking allowance fitted in the concave portion of the corrugated is reduced. In this case, when the corrugated bends, there is a problem that the ribs are disengaged and pulled out in the axial direction.

Japanese Unexamined Patent Publication No. 2016-27770

In view of such a problem, it is an object of the present invention to provide a corrugated connecting portion, an exterior component provided with a corrugated connecting portion, and a corrugated connecting structure capable of preventing the corrugated from coming off.

The present invention is a corrugated connecting portion for connecting the end portions of the corrugated parts, the fitting portion for fitting the end portion of the corrugated portion, and the lid portion for closing the mounting port for mounting the corrugated portion on the fitting portion. The fitting portion is provided with a rib that fits into the recess of the corrugate and an arrangement opening through which a linear body extending from the inside of the corrugate is inserted, and faces the tip surface of the mounted corrugate. A wall portion is provided, and a deformation suppressing portion that projects toward the inside of the mounted corrugate and suppresses deformation of the corrugated portion is provided on the peripheral edge portion of the arrangement opening in the wall portion. ..

Further, the present invention is a corrugated connection structure including an exterior component provided with a corrugated connecting portion for connecting the end portions of the corrugated portion and the corrugated body through which a linear body is inserted. A fitting portion for fitting the end portion of the corrugated portion and a lid portion for closing the mounting port for mounting the corrugated portion are provided on the fitting portion, and the fitting portion is provided with a rib that fits into the recess of the corrugated portion. And a wall portion facing the tip surface of the mounted corrugate as well as having an arrangement opening through which the linear body is inserted, and the corrugate mounted on the peripheral edge portion of the placement opening in the wall portion. A deformation suppressing portion is provided so as to project toward the inside of the corrugated portion, and the deformation suppressing portion penetrates into the inside from the tip of the corrugated.

The present invention is also characterized in that it is an exterior component provided with the above-mentioned corrugated connection portion.
The above-mentioned linear body includes an electric wire, an electric wire bundle, an electric wire cable, a harness, an optical fiber cable and the like.

According to the present invention, it is possible to prevent the corrugated from coming off.
More specifically, when an external force acts on the corrugate, both sides sandwiching the slit overlap each other and the corrugate tries to deform in the radial direction, but the deformation suppressing portion protruding toward the inside of the corrugate tends to deform the inner surface of the corrugate. Will come into contact with. In this way, since the deformation suppressing portion restricts the deformation of the corrugated inward from the inside, it is possible to prevent the corrugated from being deformed in the diameter reduction direction by overlapping both sides of the slit. Therefore, it is possible to prevent a problem that the corrugate is deformed in the diameter reduction direction due to the action of an external force, the rib fitted in the recess is disengaged, and the corrugate comes out in the axial direction.

As an aspect of the present invention, in the deformation suppressing portion, a portion on the rear side of the mounting direction in which the corrugated is mounted on the fitting portion may be formed in a tapered shape inclined with respect to the mounting direction. ..
The above-mentioned rear side portion of the deformation suppressing portion in the mounting direction means, for example, an upper portion of the deformation suppressing portion when mounted from above to below.

According to the present invention, the corrugated can be mounted smoothly and without damage.
More specifically, the deformation suppressing portion is provided in the circumferential direction at the tip of the corrugate so that the deformation suppressing portion provided on the peripheral edge of the arrangement opening in the wall portion projects toward the inside of the corrugated state in the mounted state. The corrugate will be attached by passing a part of the corrugated. When the deformation suppressing portion passes through a part of the tip portion of the corrugated portion in the circumferential direction, the corrugated portion is deformed so as to be turned over.

Therefore, since the rear portion of the deformation suppressing portion where the corrugated to be mounted begins to come into contact with the mounting direction has a tapered shape that is inclined with respect to the mounting direction, the deformation is gradually deformed with the mounting. Therefore, as compared with the case where there are surfaces facing each other in the mounting direction, the corrugated portion is smoothly deformed by the deformation suppressing portion, so that the load acting on the corrugated can be reduced. Therefore, the corrugated can be smoothly attached, and damage due to the passage of the deformation suppressing portion can be prevented.

Further, when the corrugated is mounted, the corrugated is pressed in the axial direction along the tapered shape of the deformation suppressing portion, so that the resistance when the corrugated is pushed in gradually increases. After that, the pressing load applied to the corrugated when the deformation suppressing portion is overcome is released, so that an appropriate sense of moderation can be obtained. Therefore, it is possible to recognize the completion of the mounting work and improve the work efficiency.

Further, as an aspect of the present invention, in the deformation suppressing portion, the front side portion in the mounting direction, which is in front of the mounting direction, may be formed in a detachment prevention shape for preventing the corrugated from coming off.
The disengagement means that the corrugated corrugated from the mounting direction moves to the opposite side (opposite mounting direction) to the mounting direction and is unnecessarily disengaged.

The detachment prevention shape is a shape that protrudes in a direction that intersects the detachment direction so as to resist the detachment of the corrugate, and is preferably an opposing shape that intersects at an angle of 45 degrees or more with respect to the detachment direction. Is.

According to the present invention, when the corrugated is mounted, the detachment prevention shape comes into contact with the inner surface of the corrugated over the deformation suppressing portion. Therefore, it is possible to prevent the corrugated from coming off in the opposite mounting direction. The detachment prevention shape is a shape that is in contact with the inner surface of the corrugate and has a locking end portion for pressing the inner surface from the inside.

Further, as an aspect of the present invention, the arrangement opening may be formed by a U-shaped U-shaped opening communicating with the mounting port, and the deformation suppressing portion may be arranged on both sides of the U-shaped opening.

According to the present invention, it is possible to suppress the deformation by abutting from the inside on the inner surfaces of the corrugates that are to be deformed by the action of the external force on both sides facing each other. Can be prevented. Therefore, it is possible to prevent the corrugated from coming out in the axial direction.

Further, as an aspect of the present invention, the rear portion of the deformation suppressing portion arranged on both sides of the U-shaped opening in the mounting direction gradually expands along the mounting direction when viewed from the direction facing the wall portion. It may be formed in a C shape.
The above-mentioned C-shape has a shape that gradually separates in a direction intersecting the mounting direction along the mounting direction, and may be an inclined surface or an inclined curved surface.

According to the present invention, the inner surface of the corrugate rear side in the mounting direction, which has a half cross section tapered toward the rear side in the mounting direction, can also be regulated from the inside to suppress deformation, so that the corrugated slit can be more reliably performed. It is possible to prevent both sides sandwiching the above from overlapping each other and deforming. Therefore, it is possible to prevent the corrugated from coming out in the axial direction.

Further, as an aspect of the present invention, the deformation suppressing portion may extend from the mounting port side to the bottom wall portion facing the mounting port from the central axis of the mounted corrugated.
According to the present invention, since the inner surface extending from the rear side in the mounting direction and the front side in the mounting direction of the corrugated can be regulated from the inside to suppress deformation, it is possible to more reliably prevent both sides sandwiching the slit of the corrugated from overlapping and deforming. .. Therefore, it is possible to prevent the corrugated from coming out in the axial direction.

Further, as an aspect of the present invention, the deformation suppressing portion may be formed along both edges of a linear portion in the U-shaped opening.
According to the present invention, it is possible to prevent the deformation suppressing portion from interfering with the insertion of the linear body through the U-shaped opening. Further, since the linear body passing through the U-shaped opening is arranged along the deformation suppressing portion, the linear body and the edge of the U-shaped opening do not make point contact. Therefore, it is possible to prevent the linear body from being damaged by friction.

Further, as an aspect of the present invention, the inner end surface of the deformation suppressing portion on the side of the U-shaped opening may be flat along the mounting direction and the direction facing the wall portion.
According to the present invention, since the linear body passing through the U-shaped opening is arranged along the inner end surface of the deformation suppressing portion, the linear body and the edge of the U-shaped opening do not make point contact, and the inner end surface of the deformation suppressing portion is not formed. It becomes a line contact along. Therefore, it is possible to prevent the durability of the linear body from being lowered even if the deformation suppressing portion is provided.

Further, as an aspect of the present invention, the distance between the rib closest to the wall portion side and the deformation suppressing portion protruding from the wall portion is 0. It may be set to 5 times or more and 1.5 times or less.

According to the present invention, the deformation suppressing portion can be arranged inside the tip portion of the corrugated portion.
More specifically, the corrugate having the tip surface facing the wall portion provided with the deformation suppressing portion has ribs fitted in the recesses to regulate the axial position thereof. The tip surface of the corrugated portion facing the wall portion provided with the deformation suppressing portion may be either a concave portion or a convex portion. Then, the distance from the wall portion changes depending on whether the tip surface of the corrugate that is fitted into the concave portion and whose axial position is regulated by the rib is a concave portion or a convex portion. However, the distance between the rib closest to the wall portion and the deformation suppressing portion protruding from the wall portion is 0.5 times or more the axial length of the concave portion and the convex portion in the corrugated portion. By setting it to 5 times or less, the deformation suppressing portion can be arranged inside the tip portion of the corrugated portion regardless of whether the tip surface is a concave portion or a convex portion. That is, it is possible to prevent the corrugated from coming out in the axial direction regardless of the position of the end face of the corrugated.

Further, as an aspect of the present invention, the corrugated may be mounted in a direction in which a slit formed in a part in the circumferential direction of the cross section and extending in the axial direction is on the rear side in the mounting direction.
According to the present invention, when the corrugated is mounted, the pressing load when overcoming the deformation suppressing portion is less likely to be applied to the rear side in the corrugated mounting direction, and the slit can be suppressed from being displaced. Can be prevented. Therefore, it is possible to prevent the corrugated from coming out in the axial direction.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a corrugated connecting portion capable of preventing the corrugated from coming off, an exterior component provided with the corrugated connecting portion, and a corrugated connecting structure.

Perspective view of the corrugated connection. The perspective view of the state where the lid part is attached to the fitting part. The perspective view of the state where the lid part was removed from the fitting part. Top view of the fitting part. Bottom view of the lid. FIG. 4 is a cross-sectional view taken along the line AA in FIG. FIG. 4 is a cross-sectional view taken along the line BB in FIG. The figure which shows the relationship between the partial shape of a corrugated portion and the partial shape of a fitting portion. FIG. 5 is a cross-sectional explanatory view illustrating the function of the deformation suppressing portion when the corrugated is mounted. FIG. 9 is a cross-sectional perspective view seen from the direction of arrow C in FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a perspective view of the corrugated connecting portion 10, FIG. 2 shows a perspective view of a state in which the lid portion 30 is attached to the fitting portion 20, and FIG. 3 shows a state in which the lid portion 30 is removed from the fitting portion 20. A perspective view is shown. Further, FIG. 4 shows a plan view of the fitting portion 20, and FIG. 5 shows a bottom view of the lid portion 30.

Further, FIG. 6 shows a cross-sectional view taken along the line AA in FIG. 4, FIG. 7 shows a cross-sectional view taken along the line BB in FIG. 9 is a cross-sectional explanatory view illustrating the function of the deformation suppressing portion 29 when the corrugated 4 is mounted, and FIG. 10 is a cross-sectional perspective view seen from the direction of arrow C in FIG.

Note that FIG. 9A shows a state before the end portion of the corrugated 4 is attached to the fitting portion 20, and FIG. 9B shows a state in which the end portion of the corrugated 4 is attached to the fitting portion 20. 9 (c) shows the state after the end portion of the corrugated 4 is attached to the fitting portion 20.

Further, in FIGS. 1 and 8 to 10, only a part near the tip of the corrugated 4 is shown, and in FIGS. 1 to 6 and 8 to 10, the vicinity of the corrugated connecting portion 10 of the protector 5 is shown. Only a part of is illustrated.

The corrugated 4 is a flexible exterior component that covers the wire harness 1 (hereinafter referred to as the harness 1), and has a protective function of the harness 1. In the corrugated 4, the concave portion 41 and the convex portion 42 are formed in an axially continuous shape by alternately arranging the annular small diameter portion and the large diameter portion. The harness 1 is a bundle of electric wires in which a plurality of electric wires are bundled.

The protector 5 is an exterior component that does not have flexibility and covers the harness 1, and has a protection function and a route regulation function of the harness 1. The protector 5 includes a protector main body 2 through which the harness 1 is inserted, and a lid 3 that closes the opening of the groove in which the harness 1 is housed. The corrugated connecting portion 10 is a part of the protector 5 on the end side, a fitting part 20 which is a part of the end side of the protector main body 2, and a lid part which is a part of the end side of the lid 3. It is a part composed of 30.

As shown in FIG. 3, the fitting portion 20 has a pair of side wall portions 21 arranged in parallel and a bottom wall portion 22 connecting the bottom end portions of the pair of side wall portions 21. The pair of side wall portions 21 have no wall on the entrance side and are largely open, thereby forming a mounting port 20a that communicates the outside and the inside of the fitting portion 20.

Further, the fitting portion 20 is provided with an engaging portion 23 on the outer surface of the pair of side wall portions 21 on the mounting port 20a side. The engaging portion 23 is composed of a pair of supporting pieces 23a arranged in parallel with each other and an engaging piece 23b connecting the ends of both supporting pieces 23a. A rectangular engaging hole 23c is formed in the engaging piece 23b along the outer surface of the side wall portion 21, and the engaging hole 23c penetrates from the mounting port 20a side toward the bottom wall portion 22 side. ing.

Further, the fitting portion 20 is provided with ribs 24 (24a, 24b, 24c, 24d) on the inner surfaces of the pair of side wall portions 21 and the bottom wall portion 22. The ribs 24a provided at the ends are provided on one end side in the axial direction of the pair of side wall portions 21 and the bottom wall portion 22, and the ribs 24b, ribs 24c, and ribs 24d having the same shape are arranged in order at regular intervals. It is provided in. The rib 24 is formed in a shape that crosses the bottom wall portion 22 from the mounting port 20a side of one side wall portion 21 and is connected to the mounting port 20a side of the other side wall portion 21. When the rib 24 is viewed from the axial direction, it has a U shape having linear portions parallel to each other.

Further, the fitting portion 20 is provided with a pair of side wall portions 21 and a wall portion 28 on the other end side in the axial direction of the bottom wall portion 22. An arrangement opening 28a is formed in the wall portion 28, and the arrangement opening 28a is formed in a shape in which a straight passage communicating with the mounting port 20a and a circular hole communicating with the straight passage are connected. Therefore, as shown in FIG. 7, when the wall portion 28 is viewed from the axial direction, it has a U shape having linear portions 28b parallel to each other. Two deformation suppressing portions 29 are provided on the peripheral portion of the arrangement opening 28a in the wall portion 28.

On the other hand, the lid portion 30 has an upper wall portion 31 that closes the mounting port 20a of the fitting portion 20, and a pair of side wall portions 32 that extend vertically from both end portions of the upper wall portion 31. The upper wall portion 31 is provided with a through hole 31a at a position deviated from the central portion to the other end side in the axial direction. Therefore, the worker can visually recognize the end portion of the corrugated 4 mounted through the through hole 31a.

Further, the lid portion 30 is provided with a claw plate 33 on a pair of side wall portions 32. The claw plate 33 is formed so as to extend the side wall portion 32, and the claw portion 33b protruding outward is provided at the tip portion thereof. Therefore, when the claw plate 33 is inserted into the engagement hole 23c of the fitting portion 20 and further pushed in, the claw portion 33b is caught in the outlet portion of the engagement hole 23c and is completely locked.

Further, the lid portion 30 is provided with ribs 34 (34a, 34b, 34c, 34d) on the inner surface of the upper wall portion 31. The rib 34a is provided on one end side in the axial direction of the upper wall portion 31, and ribs 34b, ribs 34c, and ribs 34d having the same shape are provided in order at regular intervals. The rib 34 is formed in a shape connected from one end side in the width direction to the other end side in the width direction of the upper wall portion 31. When the rib 34 is viewed from the axial direction, both end portions are high and the central portion is low in an arc shape.

With such a configuration, when the lid portion 30 is attached to the fitting portion 20, the ribs 24 (24a, 24b, 24c, 24d) of the fitting portion 20 and the ribs 34 (34a, 34b, of the lid portion 30) of the lid portion 30 are attached. 34c and 34d) are combined to form a substantially circular corrugated locking portion. As shown in FIG. 10, these corrugated locking portions fit into the recess 41 of the corrugated 4 and function as an axial stopper for the corrugated 4.

As described above, two deformation suppressing portions 29 are provided on the peripheral portion of the arrangement opening 28a in the wall portion 28. These deformation suppressing portions 29 project from the inner surface 281 of the wall portion 28 toward one end side in the axial direction. Here, the mounting direction α of the corrugated 4 will be the direction from the mounting port 20a side to the bottom wall portion 22 side, and the opposite direction will be described as the anti-mounting direction β.

The deformation suppressing portion 29 is formed in a tapered shape that is inclined with respect to the mounting direction α of the corrugated 4.
Specifically, each deformation suppressing portion 29 has a flat top end surface 291, and the height from the inner surface 281 of the wall portion 28 to the top end surface 291 of the deformation suppressing portion 29 is the mounting port 20a. It is formed in a tapered shape that gradually increases from the side toward the bottom wall portion 22 side (from the upper side to the lower side in FIG. 6).

The top end surface 291 does not have to be formed in a tapered shape from the end on the mounting port 20a side to the end on the bottom wall 22 side, and is at least the rear portion in the mounting direction behind the mounting direction α. It suffices if 29D has a tapered shape.

Further, in the deformation suppressing portion 29, the front side portion 29E in the mounting direction, which is in front of the mounting direction α of the corrugated 4, is formed in a shape to prevent it from coming off.
Specifically, each deformation suppressing portion 29 has a locking end portion 292 extending from the inner surface 281 of the wall portion 28 toward one end side in the axial direction, and the corrugated portion 4 to which the locking end portion 292 is mounted has a locking end portion 292. It comes into contact with the inner surface (more precisely, the inner surface of the recess 41) 43.

The locking end 292 can regulate the inner surface 43 of the corrugated 4 from the inside even if the corrugated 4 tries to move in the counter-mounting direction β. As described above, the detachment prevention shape is a shape that is in contact with the inner surface 43 of the corrugated 4 and has a locking end portion 292 for restricting the inner surface 43 from the inside. If the locking end portion 292 can come into contact with the inner surface 43 when the corrugated 4 is deformed, the locking end portion 292 may be slightly separated from the inner surface 43.

Further, the deformation suppressing portions 29 are arranged on both sides of the arrangement opening 28a formed in the wall portion 28. Specifically, one of the deformation suppressing portions 29 is arranged on the left side of the arrangement opening 28a when viewed from the direction facing the wall portion 28 (the direction from one end side in the axial direction to the other end side in the axial direction). The other is located on the right side of the placement opening 28a. When the direction perpendicular to the mounting direction α of the corrugated 4 and perpendicular to the direction facing the wall portion 28 is defined as the crossing direction γ, each deformation suppressing portion 29 is formed in the arrangement opening 28a. It can be said that they are arranged in each of the crossing directions γ.

Further, the deformation suppressing portion 29 is formed in a V shape (see the two-dot chain line F in FIG. 7) in which the rear portion 29D in the mounting direction, which is behind the mounting direction α, gradually expands along the mounting direction α.
Specifically, each deformation suppressing portion 29 has an arcuate surface-shaped outer end surface 293, and the outer end surfaces 293 are formed in a curved shape in a direction in which they are separated from each other. Therefore, in the rear portion of the mounting direction α, that is, the rear portion 29D in the mounting direction, which is the portion opposite to the mounting direction α in the deformation suppressing portion 29, gradually viewed from the direction facing the wall portion 28, along the mounting direction α. It becomes a spreading C-shape.

Further, the deformation suppressing portion 29 extends from the mounting port 20a side to the bottom wall portion 22 side with respect to the central axis G of the corrugated 4. Specifically, each deformation suppressing portion 29 has a flat inner end surface 294 along the linear portion 28b, and the inner end surface 294 has a bottom wall portion 22 from the mounting port 20a side with respect to the central axis G. It extends to the side so as to straddle the central axis G.

The inner end surface 294 is formed in a plane shape along the mounting direction α and the direction facing the wall portion 28. Therefore, the inner end surface 294 of one deformation suppressing portion 29 and the inner end surface 294 of the other deformation suppressing portion 29 are arranged in parallel with each other with the arrangement opening 28a interposed therebetween.

Further, in the deformation suppressing portion 29, the distance D between the rib 24d closest to the wall portion 28 side and the deformation suppressing portion 29 protruding from the wall portion 28 is the axial length d of the concave portion 41 and the convex portion 42 in the corrugated portion 4. It is set to 0.5 times or more and 1.5 times or less. Specifically, the distance D between the apex 24p of the rib 24d and the apex 29p of the deformation suppressing portion 29 is 0.5d or more with respect to the axial length d of the section including the concave portion 41 and the convex portion 42 of the corrugated portion 4. Set so that it is 1.5d or less.

Further, the deformation suppressing portion 29 has an arcuate outer end surface 293, and the outer end surface 293 is formed in a curved shape in a direction in which the outer end surfaces 293 are separated from each other. Therefore, it can be said that the front side portion 29E in the mounting direction, which is in front of the mounting direction α, also has an inverted C shape that gradually narrows along the mounting direction α when viewed from the direction facing the wall portion 28. In other words, it can be said that it has a V-shape that gradually spreads along the anti-mounting direction β.

Further, the deformation suppressing portion 29 on one side and the deformation suppressing portion 29 on the other side are formed so that their respective outer end surfaces 293 are along the inner surface (more accurately, the inner surface of the recess 41) 43 of the corrugated 4. Each outer end surface 293 constitutes a part of a cylindrical surface having a diameter similar to the inner diameter d of the corrugated 4 centered on the central axis G of the corrugated 4.

It is preferable to increase the area of each outer end surface 293 as much as possible if the productivity of the fitting portion 20 and the ease of mounting the corrugated 4 can be ensured. Since the inner surface 43 of the corrugated 4 can be widely regulated from the inside to suppress deformation, it is possible to more reliably prevent both sides of the corrugated 4 sandwiching the slit 45 from overlapping each other and deforming.

In such a corrugated connecting portion 10, as shown in FIG. 9A, the corrugated 4 is aligned so that the tip surface 44 of the corrugated 4 and the inner surface 281 of the wall 28 are in contact with each other. Therefore, it is necessary to push the corrugated 4 into the fitting portion 20. Then, the rib 24 of the fitting portion 20 is fitted into each recess 41 of the corrugated portion 4.

After that, as shown in FIG. 9B, when the corrugated 4 is pushed in, the deformation suppressing portion 29 is moved from the front side portion in the mounting direction to the lateral side portion in the mounting direction (both side portions sandwiching the arrangement opening 28a). As it rides up along the apical surface 291, the corrugated 4 is gradually pressed to one side in the axial direction. Therefore, as the corrugated 4 is pushed in, the resistance gradually increases.

Then, as shown in FIG. 9C, when the corrugated 4 is further pushed in, the deformation suppressing portions 29 are respectively from the front side portion in the mounting direction to the lateral side portion in the mounting direction (both side portions sandwiching the arrangement opening 28a). Therefore, the pressing load applied to the corrugated 4 is suddenly released, and an appropriate sense of moderation can be obtained.
At this time, as shown in FIG. 10, the locking end portion 292 and the outer end surface 293 of the deformation suppressing portion 29 are in contact with the inner surface of the corrugated 4 (to be exact, the inner surface of the recess 41) 43. Then, the locking end portion 292 and the outer end surface 293 regulate the inner surface 43 of the corrugated 4 from the inside.

The corrugated 4 may be mounted in a direction in which a slit 45 formed in a part of the circumferential direction of the cross section and extending in the axial direction is on the rear side (β side) of the mounting direction α. With the above-described configuration, it is difficult for a pressing load when overcoming the deformation suppressing portion 29 to be applied to the rear side of the corrugated 4 in the mounting direction, and the displacement of the slit 45 can be suppressed. That is, by arranging the slit 45 at a position where a pressing load is not easily applied, both sides of the slit 45 are less likely to be displaced in the radial direction, and both sides of the corrugated 4 sandwiching the slit 45 can be prevented from overlapping and deforming.

As described above, the corrugated connecting portion 10 connecting the end portions of the corrugated 4 is a lid that closes the fitting portion 20 for fitting the end portion of the corrugated 4 and the mounting port 20a for mounting the corrugated 4 on the fitting portion 20. A portion 30 is provided, and the fitting portion 20 has a rib 24 that fits into the recess 41 of the corrugated 4 and an arrangement opening 28a through which the harness 1 extending from the inside of the corrugated 4 is inserted. A wall portion 28 facing the front end surface is provided, and a deformation suppressing portion 29 that projects toward the inside of the mounted corrugate 4 and suppresses deformation of the corrugated 4 is provided on the peripheral edge of the arrangement opening 28a in the wall portion 28. Therefore, it is possible to prevent the corrugated 4 from coming off.

More specifically, when an external force acts on the corrugated 4, both sides of the slit 45 overlap each other and the corrugated 4 tries to deform in the radial direction, but the deformation suppressing portion 29 protruding toward the inside of the corrugated 4 tries to deform. It comes into contact with the inner surface 43 of the corrugated 4. In this way, since the deformation suppressing portion 29 restricts the deformation of the corrugated 4 inward from the inside, it is possible to prevent the corrugated 4 from being deformed in the diameter reduction direction by overlapping both sides of the slit 45 with each other. Therefore, it is possible to prevent a problem that the corrugated 4 is deformed in the diameter reduction direction due to the action of an external force, the rib 24 fitted in the recess 41 is disengaged, and the corrugated 4 comes out in the axial direction.

Further, in the deformation suppressing portion 29, the rear portion 29D in the mounting direction, which is rearward in the mounting direction in which the corrugated 4 is mounted on the fitting portion 20, is formed in a tapered shape that is inclined with respect to the mounting direction α, so that it is smooth. Moreover, the corrugated 4 can be attached without being damaged.

More specifically, the deformation suppressing portion 29 is formed around the tip of the corrugated 4 so that the deformation suppressing portion 29 provided on the peripheral edge of the arrangement opening 28a in the wall portion 28 projects toward the inside of the corrugated 4 in the mounted state. The corrugated 4 will be mounted by passing a part of the direction.

When the deformation suppressing portion 29 passes through a part of the tip portion of the corrugated portion in the circumferential direction, the corrugated portion 4 at the portion is deformed so as to get over the deformation suppressing portion 29 and turn over. Therefore, since the rear portion 29D in the mounting direction of the deformation suppressing portion 29 at which the corrugated 4 to be mounted begins to come into contact has a tapered shape that is inclined with respect to the mounting direction α, the deformation is gradually deformed with mounting.

Therefore, as compared with the case where there is a surface facing the mounting direction α, the deformation suppressing portion 29 smoothly deforms the corrugated 4, so that the load acting on the corrugated 4 can be reduced. Therefore, the corrugated 4 can be smoothly attached, and damage due to the passage of the deformation suppressing portion 29 can be prevented.

Further, when the corrugated 4 is mounted, the corrugated 4 is pressed in the axial direction along the tapered shape of the deformation suppressing portion 29, so that the resistance when the corrugated 4 is pushed in gradually increases. After that, the pressing load applied to the corrugated 4 when the deformation suppressing portion 29 is overcome is released, so that an appropriate sense of moderation can be obtained. Therefore, it is possible to recognize the completion of the mounting work and improve the work efficiency.

Further, in the deformation suppressing portion 29, the front side portion 29E in the mounting direction, which is in front of the mounting direction α, is formed with a locking end portion 292 that prevents the corrugated 4 from coming off, so that the deformation is deformed when the corrugated 4 is mounted. The locking end portion 292 comes into contact with the inner surface of the corrugate 4 that has passed over the restraining portion 29. Therefore, it is possible to prevent the corrugated 4 from coming off in the opposite mounting direction β.

Further, since the arrangement opening 28a is composed of a U-shaped U-shaped opening communicating with the mounting port 20a and the deformation suppressing portions 29 are arranged on both sides of the U-shaped opening, it will be deformed by the action of an external force. Deformation can be suppressed by abutting the inner surfaces 43 on both sides of the corrugated 4 facing each other from the inside. Therefore, it is possible to reliably prevent both sides of the corrugated 4 sandwiching the slit 45 from overlapping each other and deforming. Therefore, it is possible to prevent the corrugated 4 from coming off in the axial direction.

Further, the mounting direction rear side portion 29D on the anti-mounting direction β side of the deformation suppressing portions 29 arranged on both sides of the U-shaped opening, that is, at each of the cross-sectional directions γ in the U-shaped opening, is in a direction facing the wall portion 28. When viewed from the side, it is formed in a V shape that gradually expands along the mounting direction α, and the half cross section on the rear side of the mounting direction is tapered toward the rear side of the mounting direction. Since the surface 43 can also be regulated from the inside to suppress deformation, it is possible to more reliably prevent both sides of the corrugated 4 sandwiching the slit 45 from overlapping each other and deforming. Therefore, it is possible to prevent the corrugated 4 from coming off in the axial direction.

Further, the deformation suppressing portion 29 extends from the mounting port 20a side to the bottom wall portion 22 side with respect to the central axis G of the mounted corrugated 4, and has an inner surface extending to the rear side in the mounting direction and the front side in the mounting direction of the corrugated 4. Can be regulated from the inside to suppress deformation, so that it is possible to more reliably prevent both sides of the corrugated 4 sandwiching the slit 45 from overlapping each other and deforming. Therefore, it is possible to prevent the corrugated 4 from coming off in the axial direction.

Further, since the deformation suppressing portion 29 is formed along both edges of the linear portion 28b in the U-shaped opening, it is possible to prevent the deformation suppressing portion 29 from interfering with the insertion of the harness 1 through the U-shaped opening. ..
Further, since the harness 1 passing through the U-shaped opening is arranged along the deformation suppressing portion 29, the harness 1 and the edge of the U-shaped opening do not come into point contact. Therefore, it is possible to prevent the harness 1 from being damaged by friction.

Further, since the inner end surface 294 of the deformation suppressing portion 29 on the side of the U-shaped opening is flat along the mounting direction α and the direction facing the wall portion 28, the harness 1 passing through the U-shaped opening is the deformation suppressing portion 29. Since it is arranged along the inner end surface 294, the harness 1 and the edge of the U-shaped opening do not make point contact, but form line contact along the inner end surface 294 of the deformation suppressing portion 29. Therefore, it is possible to prevent the durability of the harness 1 from being lowered even if the deformation suppressing portion 29 is provided.

Further, the distance D between the rib 24d closest to the wall portion 28 side and the deformation suppressing portion 29 protruding from the wall portion 28 is 0.5 times the axial length of the concave portion 41 and the convex portion 42 in the corrugated portion 4. Since it is set to 1.5 times or less, the deformation suppressing portion 29 can be arranged inside the tip portion of the corrugated 4.

More specifically, in the corrugated 4 having the tip surface facing the wall portion 28 provided with the deformation suppressing portion 29, the rib 24 is fitted into the recess 41 to regulate the axial position thereof. The tip surface of the corrugate 4 facing the wall portion 28 provided with the deformation suppressing portion 29 may be either a concave portion 41 or a convex portion 42. Then, the distance from the wall portion 28 changes depending on whether the tip surface of the corrugate 4 that is fitted into the concave portion 41 and whose axial position is regulated by the rib 24 is the concave portion 41 or the convex portion 42.

However, the distance D between the rib 24d closest to the wall portion 28 side and the deformation suppressing portion 29 protruding from the wall portion 28 is 0.5 times the axial length of the concave portion 41 and the convex portion 42 in the corrugated portion 4. By setting it to 1.5 times or more, the deformation suppressing portion 29 can be arranged inside the tip portion of the corrugated 4 regardless of whether the tip surface is the concave portion 41 or the convex portion 42. .. That is, it is possible to prevent the corrugated 4 from coming out in the axial direction regardless of the position of the end face of the corrugated 4.

Further, the corrugated 4 is mounted with a slit 45 formed in a part of the circumferential direction of the cross section extending in the axial direction in a direction to be rearward of the mounting direction α, and the corrugated 4 is mounted when the corrugated 4 is mounted. Since it is difficult for a pressing load when overcoming the deformation suppressing portion 29 to be applied to the rear side in the direction and the displacement of the slit 45 can be suppressed, it is possible to prevent both sides of the corrugated 4 sandwiching the slit 45 from overlapping each other and deforming. Therefore, it is possible to prevent the corrugated 4 from coming off in the axial direction.

In the correspondence between the configuration of the present invention and the above-described embodiment, the corrugated of the present invention corresponds to the corrugated 4.
Similarly below
The corrugated connection part corresponds to the corrugated connection part 10
The fitting portion corresponds to the fitting portion 20 and
The mounting port corresponds to the mounting port 20a,
The lid part corresponds to the lid part 30
The recess of the corrugated corresponds to the recess 41,
The rib corresponds to the rib 24,
The linear body corresponds to harness 1 and
The placement opening corresponds to the placement opening 28a,
The wall part corresponds to the wall part 28,
The deformation suppressing unit corresponds to the deformation suppressing unit 29,
The rear part in the mounting direction corresponds to the rear part 29D in the mounting direction.
The front part in the mounting direction corresponds to the front part 29E in the mounting direction.
The detachment prevention shape corresponds to the locking end 292,
The crossing direction corresponds to the crossing direction γ,
The central axis corresponds to the central axis G,
The linear portion corresponds to the linear portion 28b,
The inner end surface corresponds to the inner end surface 294,
The closest rib corresponds to the rib 24d,
Exterior parts correspond to protector 5
Although the slit corresponds to the slit 45, the present invention is not limited to the configuration of the above-described embodiment, and many embodiments can be obtained.

In the above-described embodiment, the harness 1, which is a bundle of electric wires in which a plurality of electric wires are bundled, is inserted through the corrugate 4 and the protector 5, but for example, a single electric wire, a plurality of unbundled electric wires, and a plurality of electric wires are combined. An electric wire cable, an optical fiber cable, or the like covered with the corrugated cable may be inserted into the corrugate 4 and the protector 5.

1 ... Harness 4 ... Corrugated 5 ... Protector 10 ... Corrugated connecting part 20 ... Fitting part 20a ... Mounting port 24 ... Rib 24d ... Rib 28 ... Wall part 28a ... Arrangement opening 28b ... Linear part 29 ... Deformation suppressing part 29D ... Mounting Direction Rear part 29E ... Mounting direction Front part 30 ... Lid 41 ... Recess 45 ... Slit 292 ... Locking end 294 ... Inner end surface γ ... Crossing direction G ... Central axis

Claims (12)

A corrugated connection that connects the ends of the corrugated
A fitting portion for fitting the end portion of the corrugated portion and a fitting portion for fitting the end portion of the corrugated portion.
The fitting portion is provided with a lid portion for closing the mounting port for mounting the corrugated portion.
The fitting portion has
Ribs that fit into the recesses of the corrugated
It has an arrangement opening through which a linear body extending from the inside of the corrugate is inserted, and is provided with a wall portion facing the tip surface of the mounted corrugate.
At the peripheral edge of the arrangement opening in the wall
A corrugated connection portion provided with a deformation suppressing portion that protrudes toward the inside of the mounted corrugate and suppresses deformation of the corrugated portion. The corrugated connection according to claim 1, wherein in the deformation suppressing portion, a portion on the rear side in the mounting direction, which is rearward in the mounting direction in which the corrugated is mounted on the fitting portion, is formed in a tapered shape inclined with respect to the mounting direction. Department. The corrugated connection portion according to claim 2, wherein in the deformation suppressing portion, a portion on the front side in the mounting direction, which is in front of the mounting direction, is formed in a detachment prevention shape for preventing the corrugate from coming off. The arrangement opening is composed of a U-shaped U-shaped opening that communicates with the mounting port.
The corrugated connecting portion according to any one of claims 1 to 3, wherein the deformation suppressing portion is arranged on both sides of the U-shaped opening. The rear portion of the deformation suppressing portion arranged on both sides of the U-shaped opening in the mounting direction is formed in a V shape that gradually expands along the mounting direction when viewed from the direction facing the wall portion. The corrugated connection according to claim 4. The corrugated connecting portion according to claim 4 or 5, wherein the deformation suppressing portion extends from the mounting port side to the bottom wall portion facing the mounting port from the central axis of the mounted corrugated. The corrugated connecting portion according to any one of claims 4 to 6, wherein the deformation suppressing portion is formed along both edges of a linear portion of the U-shaped opening. The corrugated connecting portion according to claim 7, wherein the inner end surface of the deformation suppressing portion on the side of the U-shaped opening is planar along the mounting direction and the direction facing the wall portion. The distance between the rib closest to the wall portion and the deformation suppressing portion protruding from the wall portion is 0.5 times or more and 1.5 times the axial length of the concave portion and the convex portion in the corrugated portion. The corrugated connection portion according to any one of claims 1 to 8 set below. An exterior component provided with the corrugated connection according to any one of claims 1 to 9. Exterior parts with corrugated connections that connect the ends of the corrugated
It is a corrugated connection structure provided with the corrugated body through which a linear body is inserted.
At the corrugated connection
A fitting portion for fitting the end portion of the corrugated portion and a fitting portion for fitting the end portion of the corrugated portion.
The fitting portion is provided with a lid portion for closing the mounting port for mounting the corrugated portion.
In the fitting part
Ribs that fit into the recesses of the corrugated
It has an arrangement opening through which the linear body is inserted, and is provided with a wall portion facing the tip surface of the mounted corrugate.
At the peripheral edge of the arrangement opening in the wall
A corrugated connection structure in which a deformation suppressing portion is provided so as to project toward the inside of the mounted corrugate, and the deformation suppressing portion penetrates into the inside from the tip of the corrugated. The corrugated connection structure according to claim 11, wherein the corrugated structure is provided with a slit formed in a part in the circumferential direction of the cross section extending in the axial direction so as to be rearward in the mounting direction.

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