JP2015023769A - Corrugate tube fixing component and mounting structure of corrugate tube employing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a corrugate tube fixing component of a novel structure capable of advantageously preventing occurrence of diameter reduction deformation in a terminal of a corrugate tube or positional displacement between a crest part and a valley part when applying tape winding for preventing opening of a slit portion to an outer circumference of the corrugate tube, and a mounting structure of the corrugate tube employing the same.SOLUTION: The corrugate tube fixing component comprises: a cover wall part 12 extending in a circumferential direction and an axial direction of a corrugate tube 30 and mounted on an outer peripheral surface 40 of the corrugate tube 30; a thin-plate partition wall part 16 protrusively provided on a mounting surface 42 of the cover wall part 12 to the corrugate tube 30, extending in an extension direction of a slit 38 and protruding through the slit 38 into the corrugate tube 30; and a pair of fitting protrusions 18 and 20 protrusively provided on the mounting surface 42 of the cover wall part 12 at both sides of the partition wall part 16 in a circumferential direction and fitted to a valley part 36 of the corrugate tube 30.

Description

  The present invention relates to a corrugated tube fixing part that is attached to a slit part of a corrugated tube to prevent the slit part from being displaced, and a corrugated tube mounting structure using the corrugated tube fixing part.

  Conventionally, a wire harness routed between a battery and a load of an automobile is used in a state where it is inserted into a corrugated tube at a place where protection is required for the purpose of preventing interference with other in-vehicle components. Yes. The corrugated tube has a configuration in which annular crests and troughs are alternately connected, and a slit for inserting a wire harness extends in the longitudinal direction. Therefore, by pushing the wire harness through the slit, the wire harness can be easily extrapolated to the wire harness, and has excellent flexibility and can be routed freely according to the layout.

  By the way, as for the corrugated tube extrapolated by the wire harness, it is generally performed to prevent unnecessary opening of the slit by winding an adhesive tape around the outer periphery of the corrugated tube so that the wire harness does not come out from the slit. . The corrugated tube externally attached to the wire harness in this way is, for example, a holding member such as a protector through which the wire harness is inserted, as described in JP-A-8-163743 (Patent Document 1). By being fixed to the vehicle, it is fixed at a proper position of the automobile.

  Specifically, as shown in FIG. 4 of Patent Document 1, the wire harness insertion hole of the protector is provided with an uneven portion that fits into a peak portion and a valley portion of the corrugated tube, and the uneven portion is provided in the corrugated tube. The structure which positions and fixes the corrugated tube extrapolated by the wire harness to a protector by fitting to the peak part and trough part of this and pinching a corrugated tube is proposed. According to this, it is possible to fix the positioning by simply fitting the ridges and valleys of the corrugated tube to the concavo-convex part of the wire harness insertion hole of the protector, and the fixing work such as tape winding can be made unnecessary.

  However, the end of the corrugated tube that is inserted into the wire harness insertion hole is taped in advance to prevent the corrugated tube slit from opening, and the peaks and troughs are mutually connected on both sides of the corrugated tube slit. Also, it may be fixed in a misaligned state, or it may be fixed in a state where one end side of the slit enters the lower side of the other end side, resulting in misalignment of the peak and valley portions and a corrugated tube diameter reduction. is there. Therefore, the uneven portion provided in the wire harness insertion hole and the peak and valley portions of the corrugated tube are not aligned, so that the fitting is not performed and the wire harness is not easily positioned and fixed stably in the insertion hole. It was inherent.

  Therefore, for example, Japanese Patent Application Laid-Open No. 2010-178480 (Patent Document 2) proposes that a long fixed part extending in an inverted Ω cross section is inserted into a slit portion of a corrugated tube and attached. Has been. According to this, the slit portion of the corrugated tube is sandwiched between the outer peripheral surface side and the inner peripheral surface side by the fixing component in a state where the central portion of the fixing component is disposed between both end surfaces of the corrugated tube divided by the slit. (See FIG. 2B of Patent Document 2). Therefore, it is possible to prevent the corrugated tube from being reduced in diameter by one of the both end faces of the corrugated tube divided by the slit entering the other.

  However, in such a conventional structure, the corrugated tube is advantageously prevented from being deformed in diameter reduction, but it is difficult to say that it is possible to sufficiently prevent the misalignment between the peaks and valleys on both sides of the slit. . In addition, since the fixed part described in Patent Document 2 has a shape in which the lower end portion swells in a substantially rhombus shape, the force to spread the corrugated tube increases when it is inserted into the slit from above. As a result, the corrugated tube may be deformed or damaged. In this case, from one end of the corrugated tube in the axial direction, insert the narrow part of the long fixed part (reverse Ω-shaped constricted part) between the slits and slide it in the longitudinal direction of the corrugated tube There is an alternative to do this, but there is a problem that the mounting work is complicated and time-consuming.

JP-A-8-163743 JP 2010-178480 A

  The present invention has been made in the background of the above-mentioned circumstances, and the solution is to reduce the diameter of the end of the corrugated tube when the tape is wound around the outer periphery of the corrugated tube to prevent the slit portion from opening. An object of the present invention is to provide a fixing part for a corrugated tube having a novel structure that can advantageously prevent the occurrence of misalignment between peaks and valleys.

  It is another object of the present invention to provide a novel attachment structure for a holding member of a wire harness in which a corrugated tube taped around an outer periphery using a corrugated tube fixing component is extrapolated.

  A first aspect of the present invention relating to a corrugated tube fixing part is a corrugated structure in which annular crests and troughs are alternately connected and mounted on a corrugated tube provided with a slit for inserting a wire harness. A cover part for a tube, which extends in the circumferential direction and the axial direction of the corrugated tube and is placed on the outer peripheral surface of the corrugated tube, and a placement surface of the cover wall on the corrugated tube And a thin plate-like partition wall portion extending in the extending direction of the slit and projecting into the corrugated tube through the slit, and on both sides in the circumferential direction of the partition wall portion, the cover wall A pair of fitting protrusions that protrude from the mounting surface and are fitted into the valley portion of the corrugated tube. To.

  The fixing part for a corrugated tube of this aspect has a thin plate-shaped partition wall portion that protrudes from the mounting surface of the cover wall portion mounted on the outer peripheral surface of the corrugated tube and extends in the slit extending direction. It has an established structure. Therefore, the partition wall can be inserted from above the slit of the corrugated tube and can be attached to the corrugated tube by a simple operation of placing the cover wall on the outer peripheral surface of the corrugated tube. Therefore, the mounting workability is greatly improved as compared with the case where a long fixed part is slid and inserted from one end of the corrugated tube in the axial direction.

  In addition, since the partition wall portion can be disposed between the both end faces of the corrugated tube divided by the slit, one of the both end faces of the corrugated tube slit is placed below the other when an external force is applied by tape winding. The problem of entering and shrinking in diameter can be reliably prevented as in the prior art.

  Furthermore, since a pair of fitting protrusions are provided on both sides of the partition wall, these fitting protrusions can be fitted in alignment with the valleys of the corrugated tube on both sides of the slit. As a result, it is possible to reliably prevent misalignment in the axial direction of the crests and troughs on both sides of the slit, which was insufficient with the conventional structure, and stably hold them in the aligned state. it can.

  In this way, with the corrugated tube fixing part mounted on the end of the corrugated tube, even if tape winding is performed to prevent the opening of the slit on the outer surface of the corrugated tube, the slit portion of the end of the corrugated tube is Since the corrugated tube fixing parts prevent axial / axial displacement, the valleys aligned by the fitting protrusions and the peaks and valleys connected at a predetermined pitch are aligned. It is stably held in the state. Therefore, the corrugated tube wound with tape in a state where the peak portion and the valley portion of the end of the corrugated tube are not displaced can be stably manufactured.

  Thus, the corrugated tube taped without misalignment using the corrugated tube fixing part of the present invention is securely aligned and fitted to the concave and convex portions provided in the insertion hole of the holding member such as a protector. be able to. Therefore, the corrugated tube can be reliably and stably attached to the insertion hole of the holding member.

  Note that one pair of fitting protrusions may be provided on each side of the partition wall, or a plurality of fitting protrusions may be provided at a plurality of locations adapted to the pitch of the valleys. Furthermore, each fitting protrusion should just be a shape which fits into a trough part at the circumferential direction both sides of a slit, may be continuous in the circumferential direction, and may be divided in the circumferential direction. Further, the pair of fitting protrusions may be fitted into the same valley or may be fitted into different valleys.

  A second aspect of the present invention relating to a corrugated tube fixing part is the corrugated tube fixing part according to the first aspect, wherein the pair of fitting protrusions are provided at the same position in the extending direction of the partition wall. It is what has been.

  According to this aspect, the pair of fitting protrusions provided on both sides of the partition wall in the circumferential direction are provided at the same position in the extending direction of the partition wall. Thereby, since a pair of fitting protrusion fits in the same trough part, the positioning of the peak part and trough part in the axial direction of a corrugated tube can be performed more simply and reliably.

  According to a third aspect of the present invention relating to a corrugated tube fixing part, in the corrugated tube fixing part according to the first or second aspect, the pair of fitting protrusions are arranged in the extending direction of the partition wall. It is provided at a plurality of locations suitable for the pitch of the valleys.

  According to this aspect, since the pair of fitting protrusions are provided at a plurality of locations adapted to the pitch of the troughs, it is possible to prevent the positional deviation between the crests and troughs in the axial direction more accurately and reliably. It is.

  According to a fourth aspect of the present invention relating to a corrugated tube fixing part, in the corrugated tube fixing part according to any one of the first to third aspects, the distal end of the partition wall is provided on both sides in the circumferential direction. Engaging protrusions that run out and engage with the inner peripheral surface of the corrugated tube are provided.

  According to this aspect, the front end of the partition wall is provided with the engaging protrusion that protrudes from both sides in the circumferential direction and engages the inner peripheral surface of the corrugated tube. When an external force in the pull-out direction (outward in the axial direction of the corrugated tube) is applied to the fixed component for the tube, the engaging protrusion engages with the inner peripheral surface of the corrugated tube, so that the fixed component for the corrugated tube Detachment from the corrugated tube can be advantageously prevented.

  According to a fifth aspect of the present invention relating to a corrugated tube fixing component, in the corrugated tube fixing component according to any one of the first to fourth aspects, the cover wall portion has an arc cross-sectional shape in an axial direction. It is comprised by the curved flat plate extended, and the said partition part is protrudingly provided toward the radial direction inner part in the circumferential direction center part of the said cover wall part.

  According to this aspect, since the cover wall portion is formed of a curved flat plate having an arc cross-sectional shape and extending in the axial direction, the cover wall portion can be stably brought into contact with the outer peripheral surface of the corrugated tube in a wide area. . In addition, since the partition wall portion projects from the center portion in the circumferential direction of the cover wall portion, the cover wall portion spreads evenly on both sides of the partition wall portion, making it easy to hold the corrugated tube fixing component. Thus, it is possible to improve the mounting workability.

  According to a sixth aspect of the present invention relating to a corrugated tube fixing part, in the corrugated tube fixing part according to any one of the first to fourth aspects, the cover wall portion extends over the entire length in the axial direction. An extending thin wall portion is provided, and the opposing angle of the cover wall portion to the corrugated tube is freely displaceable on both sides in the circumferential direction across the thin wall portion.

  According to this aspect, the cover wall portion is provided with the thin wall portion extending in the axial direction, and the facing angle of the cover wall portion with respect to the corrugated tube can be freely changed by the thin wall portion. Accordingly, the cover wall portion can be deformed along the outer peripheral surface of the corrugated tube in accordance with the corrugated tube diameter, and the versatility of the corrugated tube fixing component can be improved.

  The first aspect of the present invention relating to the corrugated tube mounting structure is externally inserted into a wire harness that is inserted through the insertion hole of the holding member of the wire harness, and annular crests and troughs are alternately connected. In addition, in the corrugated tube mounting structure for fixing the end of the corrugated tube provided with the slit for inserting the wire harness to the insertion hole of the holding member, any one of the first to sixth aspects is used. The fixing part for a corrugated tube is mounted on the end of the corrugated tube, the crest and the trough are positioned in the end, and both end surfaces of the slit in the end are the partition wall While the diameter of the end of the corrugated tube is maintained in contact with a position facing the circumferential direction of the corrugated tube, The valley at the end of the tube is fitted into a circumferential protrusion provided in the insertion hole, and the outer peripheral surface of the corrugated tube is positioned and fixed in a state of being held on the inner surface of the insertion hole. It is characterized by.

  According to this aspect, by adopting the corrugated tube fixing part of the present invention, it is possible to advantageously prevent the displacement of the slit, so that one end of the corrugated tube to which the corrugated tube fixing part is mounted is attached. When fitting into the entrance / exit of the holding member, it is possible to advantageously prevent the corrugated tube from coming off due to the slit being displaced and the diameter of one end of the corrugated tube becoming smaller.

  In addition, by examining how much the corrugated tube fixing part is exposed from the inside of the holding member at the entrance and exit of the holding member, how much one end of the corrugated tube is inserted into the entrance and exit of the holding member Can know.

  According to the present invention, since the partition wall portion that is inserted into the slit from the cover wall portion protrudes, the partition wall portion is inserted from above the slit so that the cover wall portion is the outer peripheral surface of the corrugated tube. It can be mounted by a simple operation of placing it on. And since the partition part can be arrange | positioned in a slit, the malfunction which one of the both end surfaces of a slit enters into the other below and carries out diameter reduction deformation | transformation can also be prevented reliably. In addition, a pair of fitting protrusions provided on both sides of the partition wall are fitted and aligned with the troughs of the corrugated tube on both sides of the slit, so that the peaks on both sides of the slit, which was insufficient with the conventional structure It is possible to reliably prevent the positional deviation in the axial direction of the valley portion. From the above, it is possible to stably manufacture a corrugated tube wound with tape in a state in which the peak portion and the valley portion of the end of the corrugated tube are not displaced, so that the corrugated tube is provided in the insertion hole of the holding member such as a protector. It is possible to securely fit the corrugated tube securely and stably by fitting the peaks / valleys of the corrugated tube terminal into the uneven portions.

The perspective view of the fixing part for corrugated tubes as 1st embodiment of this invention. The front view of the fixing component for corrugated tubes shown in FIG. The top view of the fixing component for corrugated tubes shown in FIG. The perspective view of the terminal of the corrugated tube which attached the fixing component for corrugated tubes shown in FIG. The bottom view of FIG. FIG. 6 is an enlarged sectional view taken along line VI-VI in FIG. 5. The top view which shows the attachment structure of the corrugated tube using the fixing part for corrugated tubes shown in FIG. 1 (when a protector is opened). The top view which shows the attachment structure of the corrugated tube using the fixing part for corrugated tubes shown in FIG. 1 (at the time of a protector cover). The perspective view of the fixing component for corrugated tubes as 2nd embodiment of this invention. The front view of the fixing component for corrugated tubes shown in FIG. The top view of the fixing component for corrugated tubes shown in FIG. The perspective view of the terminal of the corrugated tube which attached the fixing component for corrugated tubes shown in FIG. The bottom view of FIG.

  Embodiments of the present invention will be described below with reference to the drawings.

  First, FIGS. 1 to 3 show a corrugated tube fixing component 10 as a first embodiment of the present invention. The corrugated tube fixing component 10 includes a substantially rectangular partition wall 12 in a front view (see FIG. 2) and a substantially rectangular partition wall in a side view (see FIG. 1) protruding from the inner surface 14 of the cover wall 12. A pair of substantially arcuate fittings in a plan view (see FIG. 3) projecting from the inner surface 14 of the cover wall 12 on both sides of the portion 16 and the circumferential direction (left and right direction in FIGS. 1 to 3) of the partition wall 16 The projections 18 and 20 are provided. The corrugated tube fixing part 10 is integrally formed by injection molding or the like with a synthetic resin such as polypropylene (PP) or polyamide (PA).

  More specifically, the cover wall portion 12 is formed by a slightly curved rectangular curved flat plate, and extends in the longitudinal direction (vertical direction in FIGS. 1 and 2) with a substantially constant arc cross-sectional shape. In addition, the partition wall portion 16 is formed in a thin plate shape, and radially inward (downward in FIG. 3) from the central portion of the inner surface 14 of the cover wall portion 12 in the circumferential direction (left-right direction in FIGS. 1 to 3). ) And extends over the entire length of the cover wall 12 in the longitudinal direction. Engaging protrusions 22 that extend in the longitudinal direction and extend to both sides in the circumferential direction (left and right direction in FIGS. 1 to 3) are provided at the distal end of the partition wall 16. The engaging protrusions 22 are formed in a substantially rectangular shape in a side view (see FIG. 1), and are formed at two locations separated in the longitudinal direction of the partition wall 16. As shown in FIG. 3, the engagement protrusion 22 includes a tapered portion 24 in which the protruding dimension from the partition wall portion 16 gradually decreases toward the distal end portion of the partition wall portion 16. Further, the end surface 26 of the engaging protrusion 22 that faces the tapered portion 24 is configured to be perpendicular to the partition wall portion 16.

  On the other hand, as shown in FIGS. 1 and 2, the pair of fitting protrusions 18 and 20 are provided at the same position in the longitudinal direction of the cover wall portion 12, that is, in the extending direction of the partition wall portion 16. The cover wall portion 12 is provided with a length that does not reach the side edge of the cover wall portion 12 toward both sides in the circumferential direction of the cover wall portion 12. Moreover, a pair of fitting protrusions 18 and 20 are provided in three places corresponding to the pitch of the trough part 36 of the corrugated tube 30 mentioned later in the extension direction of the partition part 16 in this embodiment. Note that each of the pair of fitting protrusions 18 and 20 has a substantially trapezoidal cross-sectional shape in which the plate thickness dimension gradually decreases toward the protruding end.

  Next, FIGS. 4 and 5 show a state where the corrugated tube fixing part 10 shown in FIGS. 1 to 3 is attached to the terminal 32 of the corrugated tube 30. Here, in the corrugated tube 30, a wire harness (not shown) in which an electric wire bundle is bound by a binding tape such as a vinyl tape is inserted. The corrugated tube 30 has a hollow cylindrical structure, and has a structure in which crests 34 and troughs 36 extending in an annular shape are alternately connected in the length direction. The corrugated tube 30 is provided with a single slit 38 over the entire length in the length direction, and a wire harness can be inserted through an opening formed by the slit 38.

  As shown in FIGS. 4 and 5, the corrugated tube fixing component 10 is formed by inserting the partition wall portion 16 protruding from the inner surface 14 of the cover wall portion 12 from above the slit 38 of the corrugated tube 30. The corrugated tube 30 can be mounted. More specifically, the cover wall portion 12 has an inner surface of the cover wall portion 12 on the outer peripheral surface 40 of the corrugated tube 30 such that the longitudinal direction thereof is the axial direction of the corrugated tube 30 (vertical direction in FIG. 4). 14 functions as the mounting surface 42 and comes into contact therewith. In short, in a state where the corrugated tube fixing part 10 is mounted on the corrugated tube 30, the cover wall portion 12 extends in the circumferential direction (left and right direction in FIG. 4) and the axial direction (up and down direction in FIG. 4) of the corrugated tube 30. The inner surface 14 (mounting surface 42) is placed on the outer peripheral surface 40 of the corrugated tube 30 so as to extend. As a result, the cover wall 12 can be stably brought into contact with the outer peripheral surface 40 of the corrugated tube 30 over a wide area.

  Moreover, as shown in FIG. 5, the circumferential length L1 of the cover wall portion 12 is in the range of 1/5 to 4/5 of the diameter dimension R of the outer circumferential circle of the corrugated tube 30 (this embodiment). In this case, L1 is set to approximately 2 / 3R). The cover wall portion 12 is disposed across both circumferential sides of the slit 38 of the corrugated tube 30 and has a sufficient circumferential length that can contact both circumferential sides of the slit 38. Yes.

  Thus, since the range of the circumferential direction length: L1 of the cover wall part 12 with respect to the diameter dimension: R of the outer periphery circle | round | yen of the corrugated tube 30 is made into the value sufficiently small with 1/5-4/5, Even if the diameter of the corrugated tube 30 changes somewhat, the deviation of the circumference of the corrugated tube 30 from the flat surface is slight, so that the same corrugated tube fixing part 10 can be used. In short, if the range of the radial dimension of the outer peripheral circle of the corrugated tube 30: R in the circumferential length of the cover wall 12: L1 is smaller than 1/5, the outer peripheral surface 40 of the corrugated tube 30 has the cover wall 12 on the outer peripheral surface 40. May not be stably mounted. On the other hand, if the range of the circumferential length L1 of the cover wall portion 12 is larger than 4/5, the cover wall portion 12 is not able to follow the change in the diameter of the corrugated tube 30 so that the cover wall portion 12 There is a possibility that the outer peripheral surface 40 cannot be stably contacted.

  On the other hand, as shown in FIGS. 4 and 5, the partition wall 16 projecting from the placement surface 42 that is the inner surface 14 of the cover wall portion 12 placed on the outer peripheral surface 40 of the corrugated tube 30 is as shown in FIGS. The slit 38 is inserted and protruded into the corrugated tube 30. The partition wall portion 16 extends in the extending direction of the slit 38 (vertical direction in FIG. 4). As is clear from FIG. 5, the partition wall portion 16 is provided in the central portion in the circumferential direction of the cover wall portion 12, so that the cover wall portion 12 extends in an equal area on both sides of the partition wall portion 16. Therefore, the corrugated tube fixing part 10 can be easily grasped, and the mounting workability can be improved.

  A pair of fitting protrusions 18 and 20 are provided at the same position in the extending direction of the partition wall 16. In short, since the pair of fitting protrusions 18 and 20 are opposed to each other on both sides of the partition wall 16 as shown in FIGS. 1 and 2, the same valley of the corrugated tube 30 is disposed. It is adapted to be fitted to the part 36. Thereby, alignment of the peak part 34 and the trough part 36 in the axial direction of the corrugated tube 30 can be performed more simply and reliably. Moreover, in the present embodiment, the pair of fitting protrusions 18 and 20 have three locations corresponding to the pitch of the valley portions 36 of the corrugated tube 30 in the axial direction (vertical direction in FIG. 4), that is, in the extending direction of the partition wall portion 16. The pair of fitting protrusions 18 and 20 are fitted to the corresponding valley portions 36. Therefore, it is possible to prevent the positional deviation between the crest 34 and the trough 36 in the axial direction of the corrugated tube 30 with higher accuracy and reliability.

  Further, as shown in FIG. 6, the pair of fitting protrusions 18 and 20 have a projecting dimension from the inner surface 14 of the cover wall portion 12 smaller than the depth dimension of the valley portion 36 of the corrugated tube 30. ing. Thereby, the inner surface 14 (mounting surface 42) of the cover wall portion 12 can be stably brought into contact with the outer peripheral surface 40 of the corrugated tube 30 in a wide area.

  An engaging protrusion 22 is provided at the tip of the partition wall 16. As a result, as shown in FIG. 5, the engagement protrusion 22 is inserted into the slit 38 of the corrugated tube 30 and attached to the corrugated tube 30. Is engaged with the inner peripheral surface 44. More specifically, the end surface 26 (see FIG. 3) of the engagement protrusion 22 is engaged with the inner peripheral surface 44 of the corrugated tube 30. Thus, when an external force in the pulling direction (outward in the axial direction of the corrugated tube 30) is applied to the corrugated tube fixing component 10 attached to the corrugated tube 30, the engagement protrusion 22 is connected to the corrugated tube 30. By engaging with the inner peripheral surface 44, it is possible to advantageously prevent the corrugated tube fixing part 10 from being detached from the corrugated tube 30. In addition, since the engagement protrusion 22 includes a taper portion 24 (see FIG. 3) in which the projecting dimension from the partition wall portion 16 gradually decreases toward the distal end portion of the partition wall portion 16, the corrugated body. The resistance when the tube fixing part 10 is inserted from above the slit 38 is reduced, and the insertion work can be performed more easily.

  As described above, when the corrugated tube fixing part 10 is mounted on the terminal 32 of the corrugated tube 30, the peak portion 34 and the valley portion 36 in the terminal 32 of the corrugated tube 30 are positioned. In addition, the slit 38 is positioned and supported between the engaging protrusion 22 and the cover wall 12 in a state where the partition wall 16 is disposed between both end faces 48, 48 of the slit 38 at the terminal 32 of the corrugated tube 30. be able to. Therefore, the diameter dimension of the terminal 32 of the corrugated tube 30 is maintained. And even when the end 32 of the corrugated tube 30 is bound by a binding tape (not shown), one of the both end faces 48, 48 of the slit 38 enters the other and prevents the corrugated tube 30 from being reduced in diameter. The diameter of the terminal 32 of the corrugated tube 30 is maintained for a long time.

  Next, the top view for demonstrating the attachment structure of the corrugated tube which used FIG.7 and FIG.8 for the fixing | fixed part 10 for corrugated tubes is shown. As shown in FIGS. 7 and 8, in the corrugated tube mounting structure, the end 32 of the corrugated tube 30 to which the corrugated tube fixing part 10 is attached is inserted into the insertion hole 52 of the protector 50 as a holding member of the wire harness. It is supposed to be fixed to. Here, the corrugated tube 30 is externally inserted into a wire harness 53 that is inserted into the insertion hole 52 of the protector 50.

  More specifically, the protector 50 includes a protector main body 54 that extends in a bowl shape shown in FIG. 7 and a lid 56 that covers the upper opening of the protector main body 54 shown in FIG. Then, the lock piece 58 provided on the lid body 56 is inserted into the lock piece insertion hole 60 of the protector main body 54 so as to be covered, for example, a composite such as polypropylene (PP) or polyamide (PA). The resin is integrally formed by injection molding or the like. The protector main body 54 is used by accommodating a wire harness (not shown) in the protector main body 54 in an inserted state.

  One of the entrances and exits of the protector 50 is an insertion hole 52 into which the terminal 32 of the corrugated tube 30 to which the corrugated tube fixing part 10 is attached is inserted and fixed. On the side of the opening end 64 of the bottom wall 62 that constitutes the insertion hole 52 on which the terminal 32 of the corrugated tube 30 is placed, a circumferential projection 66 projects over substantially the entire length of the bottom wall 62 in the axial direction. Has been. And the trough part 36 in the terminal 32 of the corrugated tube 30 is fitted into the circumferential protrusion 66, and the outer peripheral surface 40 of the corrugated tube 30 is formed on the peripheral protrusion 66 provided on the bottom wall 62 which is the inner surface of the insertion hole 52. It can be positioned and fixed in a held state.

  In addition, the end 32 of the corrugated tube 30 is positioned so that the front end 68 of the cover wall 12 of the corrugated tube fixing component 10 attached to the end 32 of the corrugated tube 30 is positioned at the open end 64 of the insertion hole 52. Is accommodated in the bottom wall 62 which is the inner surface of the insertion hole 52. In addition, a similar circumferential projection (not shown) projects from the inner surface of the lid 56 facing the circumferential projection 66 provided on the protector main body 54, and the valley portion 36 at the terminal 32 of the corrugated tube 30 is covered. A circumferential protrusion is fitted into the end of the corrugated tube 30 so that the end 32 of the corrugated tube 30 is positioned and fixed in the insertion hole 52 of the protector 50.

  According to the corrugated tube fixing component 10 of the present embodiment having the above-described structure, the thin plate-like partition wall portion 16 has the slit 38 from the mounting surface 42 with respect to the outer peripheral surface 40 of the corrugated tube 30 of the cover wall portion 12. The slit is inserted into the corrugated tube 30 and protrudes in the extending direction of the slit 38. Therefore, the partition wall 16 is inserted from above the slit 38 of the corrugated tube 30 and the cover wall 12 is placed on the outer peripheral surface 40 of the corrugated tube 30. The fixed component 10 can be mounted. Therefore, the mounting workability is greatly improved as compared with the case where a long fixed part is slid and inserted from one axial end of the corrugated tube as in the conventional structure.

  Furthermore, a pair of fitting protrusions 18 and 20 are provided on the mounting surface 42 of the cover wall 12 with respect to the outer peripheral surface 40 of the corrugated tube 30 on both sides in the circumferential direction of the partition wall portion 16. 36 to be fitted. Therefore, since the pair of fitting protrusions 18 and 20 can be fitted and aligned with the valleys 36 of the corrugated tube 30 on both sides of the slit 38, the peaks on both sides of the slit, which was insufficient with the conventional structure, are provided. It is possible to reliably prevent the positional deviation in the axial direction of the portion and the valley portion and stably hold them in the aligned state.

  Even when the corrugated tube 30 is attached to the terminal 32 of the corrugated tube 30 in this manner and the tape is wound around the outer peripheral surface 40 of the corrugated tube 30 to prevent the slit 38 from opening, the corrugated tube Since the position of the slit 38 of the terminal 32 of the 30 is prevented from being displaced in the axial direction / axial direction by the corrugated tube fixing part 10, the valley portion 36 aligned by the pair of fitting protrusions 18, 20. In addition, the crests 34 and the troughs 36 connected to each other at a predetermined pitch are stably held in an aligned state. As a result, it is possible to stably manufacture the corrugated tube 30 wound with tape in a state in which the peak portions 34 and the valley portions 36 of the terminal 32 of the corrugated tube 30 are not displaced.

  In addition, the corrugated tube 30 wound with tape using the corrugated tube fixing part 10 of the present invention without misalignment is reliably positioned on the circumferential protrusion 66 provided in the insertion hole 52 of the protector 50 serving as a holding member. Can be fitted and fitted. Therefore, the corrugated tube 30 can be securely and stably attached to the insertion hole 52 of the protector 50.

  According to the corrugated tube mounting structure having such a structure, the use of the corrugated tube fixing part 10 of the present embodiment can advantageously prevent the shift of the both end faces 48, 48 of the slit 38. Thus, when the end 32 of the corrugated tube 30 to which the corrugated tube fixing part 10 is attached is fitted into the insertion hole 52 of the protector 50, both end surfaces 48, 48 of the slit 38 are displaced and the diameter of the end 32 of the corrugated tube 30 It is possible to advantageously prevent the corrugated tube 30 from coming off due to the decrease in the height.

  Further, in the insertion hole 52 of the protector 50, the corrugated tube fixing part 10 is used as a mark so that the insertion position of the terminal 32 of the corrugated tube 30 with respect to the insertion hole 52 of the protector 50 can be easily visually confirmed. Can also be improved.

  Next, using FIG. 9 to FIG. 13, the corrugated tube fixing component 70 according to the second embodiment of the present invention will be described in detail. Regarding the members and parts having the same structure as the above embodiment, In the figure, the same reference numerals as those in the above embodiment are attached, and detailed description thereof is omitted. That is, the corrugated tube fixing component 70 is (i) located at two locations on both sides of the partition wall 16 in the circumferential direction in the cover wall portion 72 and extends over the entire length in the longitudinal direction (axial direction of the corrugated tube 30). Thin portions 74a, 74a, 74b, 74b are provided. Then, an embodiment different from the above-described embodiment is shown in that the facing angle of the cover wall portion 72 to the corrugated tube 30 is freely displaceable on both sides in the circumferential direction across the thin-walled portion 74.

  More specifically, in the present embodiment, a pair of thin portions 74a and 74a are provided on the inner side in the circumferential direction of the cover wall portion 72, and another pair of thin portions 74b and 74b are provided on the outer side in the circumferential direction. ing. And each area | region of the cover wall part 72 isolate | separated by the thin parts 74a and 74b is hinge-connected in the thin part 74. FIG. Further, the pair of fitting protrusions 76 and 78 arranged on both sides of the partition wall portion 16 are divided into fitting protrusions 76a and 76b and fitting protrusions 78a and 78b by thin-walled portions 74b and 74b.

  As shown in FIGS. 12 and 13, also in the corrugated tube fixing part 70, the partition wall portion 16 protruding from the inner surface 14 of the cover wall portion 72 is formed in the slit of the corrugated tube 30 as in the previous embodiment. By inserting from above 38, the corrugated tube 30 can be attached. More specifically, the inner surface 14 (mounting surface 42) of the cover wall portion 72 is mounted on the outer peripheral surface 40 of the corrugated tube 30, and the pair of fitting protrusions 76 and 78 are formed in the valley portion 36 of the corrugated tube 30. It is designed to be fitted. In the present embodiment, the cover wall portion 72 is not formed of a curved flat plate and has a substantially flat plate shape (see FIGS. 9 to 11), but the corrugated tube 30 to which the corrugated tube fixing component 70 is attached. Since the terminal 32 of the corrugated tube is bound by a binding tape (not shown), the corrugated tube fixing part 70 is curved toward the outer peripheral surface 40 of the corrugated tube 30 at the thin wall portion 74 by this tape winding, so that the cover wall portion 72 is moved forward. It is constituted by a substantially curved flat plate extending in the axial direction with a substantially arc cross-sectional shape similar to that of the embodiment. Therefore, the corrugated tube fixing part 70 according to the present embodiment can have substantially the same structure as that of the corrugated tube fixing part 10 according to the previous embodiment, so that the same effect can be obtained.

  In addition, according to the corrugated tube fixing component 70 of the embodiment, the facing angle of the cover wall portion 72 with respect to the corrugated tube 30 can be freely changed by the thin portion 74, so that the cover wall portion 72 is matched to the diameter of the corrugated tube 30. Can be deformed along the outer peripheral surface 40 of the corrugated tube 30. Therefore, the cover wall 72 can be curved following the corrugated tube 30 of various diameters by changing the bending angle in the thin-walled portion 74, and the versatility of the corrugated tube fixing component 70 can be improved. In particular, the difference in the diameter of the corrugated tube 30 is further absorbed by shortening the circumferential length of the fitting protrusions 76b and 78b located on the outer side in the circumferential direction of the cover wall portion 72 where the difference in the diameter of the corrugated tube 30 is large. It is easy to do. Thereby, it is also possible to expand the range of the circumferential length L2 of the cover wall portion 72 as compared with the corrugated tube fixing component 10 of the previous embodiment. For example, the range of the circumferential length L2 of the cover wall portion 72 can be set exceeding 4/5 of the diameter dimension R of the outer circumferential circle of the corrugated tube 30, and the peaks of the corrugated tube 30 can be more stable. The positions of the portion 34 and the valley portion 36 can be maintained.

  As mentioned above, although embodiment of this invention has been described, this invention is not limited at all by the specific description in this embodiment. For example, in the present embodiment, a plurality of the pair of fitting protrusions 18, 20, 76, and 78 are provided at a plurality of locations that match the pitch of the valley portions 36 on both sides of the partition wall portion 16. It may be provided one by one. Furthermore, each fitting protrusion 18, 20, 76, 78 may have a shape that fits into the valley 36 on both sides in the circumferential direction of the slit 38, and is continuous in the circumferential direction like the fitting protrusions 18, 20. Alternatively, it may be divided in the circumferential direction like the fitting protrusions 76 and 78. Further, the pair of fitting protrusions 18, 20, 76, and 78 may be fitted into the same valley portion 36 as illustrated, or may be fitted into different valley portions 36.

10, 70: Corrugated tube fixing part, 12, 72: Cover wall part, 16: Partition part, 18, 20, 76, 78: Fitting protrusion, 22: Engaging protrusion, 30: Corrugated tube, 32: Terminal , 34: mountain part, 36: valley part, 38: slit, 40: outer peripheral surface, 42: mounting surface, 44: inner peripheral surface, 48: end surface, 50: protector (holding member), 52: insertion hole, 53 : Wire harness, 66: circumferential projection, 74: thin part

Claims (7)

An annular crest and a trough are alternately connected, and a corrugated tube fixing part that is attached to a corrugated tube provided with a slit for inserting a wire harness,
A cover wall portion extending in the circumferential direction and the axial direction of the corrugated tube and placed on the outer peripheral surface of the corrugated tube;
A thin plate-shaped partition wall protruding from the mounting surface of the cover wall portion on the corrugated tube, extending in the extending direction of the slit, and projecting into the corrugated tube through the slit; ,
On both sides in the circumferential direction of the partition wall, it is configured to include a pair of fitting protrusions that protrude from the mounting surface of the cover wall and are fitted into the valley of the corrugated tube. Fixed parts for corrugated tubes.   The corrugated tube fixing component according to claim 1, wherein the pair of fitting protrusions are provided at the same position in the extending direction of the partition wall.   The corrugated tube fixing component according to claim 1 or 2, wherein the pair of fitting protrusions are provided at a plurality of locations that match the pitch of the valleys in the extending direction of the partition wall.   The corrugated body according to any one of claims 1 to 3, wherein an engagement protrusion that protrudes from both sides in the circumferential direction and engages with an inner peripheral surface of the corrugated tube is provided at a distal end of the partition wall. Fixing parts for tubes.   The cover wall portion is formed by a curved flat plate having an arc cross-sectional shape and extending in the axial direction, and the partition wall portion protruding inward in the radial direction is provided at the circumferential central portion of the cover wall portion. The fixed part for corrugated tubes according to any one of claims 1 to 4.   The cover wall portion is provided with a thin wall portion extending over the entire length in the axial direction, and the opposing angle of the cover wall portion to the corrugated tube is freely displaceable on both sides in the circumferential direction across the thin wall portion. Item 5. The corrugated tube fixing component according to any one of Items 1 to 4. A corrugate that is externally attached to a wire harness that is inserted through the insertion hole of the holding member of the wire harness, and in which annular crests and troughs are alternately connected and provided with slits for inserting the wire harness. In the mounting structure of the corrugated tube for fixing the end of the tube to the insertion hole of the holding member,
The corrugated tube fixing part according to any one of claims 1 to 6, wherein the corrugated tube fixing part is attached to the terminal of the corrugated tube, and the peak and the valley of the terminal are positioned, and While the both end surfaces of the slit in the terminal are in contact with positions facing the circumferential direction of the partition wall, the diameter dimension of the terminal of the corrugated tube is maintained,
The trough portion at the end of the corrugated tube is fitted into a circumferential protrusion provided in the insertion hole, and the outer peripheral surface of the corrugated tube is positioned and fixed in a state of being held on the inner surface of the insertion hole. A corrugated tube mounting structure characterized by having

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