JP4306601B2 - Corrugated clamp - Google Patents

Description

  The present invention relates to a corrugated clamp, and more particularly, to improve a lock structure of a corrugated clamp for locking a vehicle body that is attached to a corrugated tube mounted on a wire harness of an automobile.

  To prevent external interference from other in-vehicle components, etc., the wiring harness that is routed to the automobile is made of synthetic resin and has strength at the required locations, and valleys and peaks are provided alternately in the axial direction. The corrugated tube with high flexibility is covered with the exterior. In order to fix the corrugated tube to the vehicle body panel at a required location, a corrugated clamp is attached to the outer periphery of the corrugated tube.

  A corrugated clamp 1 shown in FIGS. 11A and 11B shows an example of the corrugated clamp. Specifically, a pair of semi-annular portions 3A and 3B that are externally fitted to the corrugated tube T are connected by the thin hinge 2, and a valley portion and a mountain portion of the corrugated tube T are formed on the inner peripheral surface of the semi-annular portions 3A and 3B. And a trough 4a and a trough 4b. Among the semi-annular portions 3A and 3B, a lock claw 6 is provided at the tip of one semi-annular portion 3A. A buckle portion 5 is provided at the tip of the other semicircular ring portion 3B, and the lock claw 6 is inserted into the buckle portion 5 on a surface facing the lock claw 6 in a state of being fitted around the corrugated tube T. A lock hole 7 that can be stopped is provided. An insertion port 8 for a fixing piece 9 projecting from the vehicle body B is provided on the side surface opposite to the surface where the lock hole 7 of the buckle portion 5 is provided. (See JP 2004-166403 A)

However, since there is one lock claw 6 provided in the corrugated clamp 1 and one locking projection 7a provided in the lock hole 7, the inner diameter of the corrugated clamp 1 in the lock coupled state is constant. Can not increase or decrease.
Further, as shown in FIG. 12, a corrugated clamp 1 ′ has two locking claws 6 arranged in the circumferential direction, and two locking projections 7a of the other locking hole 7 arranged in the circumferential direction. However, in any case, the inner diameter of the corrugated clamp can only be adjusted in two stages at maximum, and the corrugated clamp needs to be selectively used depending on the diameter of the corrugated tube T.
Accordingly, there are problems that the number of similar clamp types increases, and it is easy to make a mistake in using the corrugated clamp in the production process, and the number of parts increases, so that the number of management steps increases.

JP 2004-166403 A

  The present invention has been made in view of the above problems, and an object thereof is to provide a highly versatile corrugated clamp that can be applied to corrugated tubes having various diameters.

In order to solve the above problems, the present invention is a corrugated clamp integrally including a holding portion attached to a corrugated tube sheathed on an electric wire, and a clamp for locking the electric wire to a vehicle body panel,
The holding part is formed by connecting one end side of an upper semi-annular part and a lower semi-annular part formed by alternately and continuously forming peaks and valleys in the axial direction with a thin hinge part. It is provided with a lock part that is detachably locked, and is integrally provided with a clamp on which a fixed piece protruding from the vehicle body panel is inserted and locked on the outer surface of one lock part,
Each of the lock portions provided on the other end side of the upper and lower semicircular ring portions includes a plurality of locking pieces in a comb-teeth shape, and includes a small protrusion with a predetermined interval on the outer surface of each comb tooth,
The small protrusion of the one lock portion is a flexible cylindrical shape, while the small protrusion of the other lock portion has an arcuate shape on the insertion side surface and the opposite surface is a flat locking surface,
The upper and lower semi-annular rings are formed by alternately inserting the comb teeth of the lock portion on one side between the comb teeth of the other lock portion and engaging the small projections to arbitrarily set the lock positions of both lock portions. The corrugated clamp is characterized in that the diameter of the annular part formed by the part is adjustable.

  Thus, in the lock portion, when the upper comb teeth and the lower comb teeth are inserted so as to mesh with each other, at least a part of a large number of small protrusions formed on each comb tooth regardless of the depth of insertion allowance Since the small protrusions are hooked and locked with each other, the insertion allowance of the upper and lower comb teeth can be finely adjusted, and the inner diameter of the holding portion in the locked state can be finely adjusted. Therefore, since one corrugated clamp can be applied to corrugated tubes of various diameters, the types of clamps can be reduced, installation errors in the production process can be prevented, and the number of parts can be reduced by reducing the number of parts. Can do.

As described above, the small protrusions projecting from the outer surface of each comb tooth of one lock portion with a required interval are made to have a flexible cylindrical shape, while being required on the outer surface of each comb tooth of the other lock portion. The small projections projecting with an interval have a circular arc shape on the insertion side surface and a flat locking surface on the opposite surface .

  In this case, when the upper semi-annular part and the lower semi-annular part are lock-coupled, that is, when one comb tooth is inserted between the other comb teeth, collisions between the small projections of each other's comb teeth Since the surface has an arc shape, it is easy to slip and the comb teeth can be inserted relatively smoothly. On the other hand, when trying to separate the comb teeth and the small protrusions once inserted and meshed, the small protrusion of one comb tooth is caught on the flat locking surface of the small protrusion of the other comb tooth. It becomes difficult to cancel. Accordingly, it is possible to regulate loosening of the clamp diameter once adjusted and release of the lock coupling.

Further, the present invention is a corrugated clamp integrally comprising a holding portion attached to a corrugated tube sheathed on an electric wire, and a clamp for locking the electric wire to a vehicle body panel,
The holding part is formed by connecting one end side of an upper semi-annular part and a lower semi-annular part formed by alternately and continuously forming peaks and valleys in the axial direction with a thin hinge part. It is provided with a lock part that is detachably locked, and is integrally provided with a clamp on which a fixed piece protruding from the vehicle body panel is inserted and locked on the outer surface of one lock part,
Each of the lock portions provided on the other end side of the upper and lower semicircular ring portions includes a plurality of locking pieces in a comb-teeth shape, and includes a small protrusion with a predetermined interval on the outer surface of each comb tooth,
The upper and lower semi-annular rings are formed by alternately inserting the comb teeth of the lock portion on one side between the comb teeth of the other lock portion and engaging the small projections to arbitrarily set the lock positions of both lock portions. The diameter of the annular part formed by the part can be adjusted, and
Setting the pressing wall to at least one of the inner surface and outer surface of the comb teeth,
Alternatively, either one of the upper and lower comb teeth protrudes in parallel from the bottom wall inside an enclosure having a U-shaped cross section composed of the inner wall, the outer wall, and the bottom wall, and the other comb tooth is inserted into the enclosure. Accordingly, a corrugated clamp in which comb teeth are engaged and locked is provided.
If it is set as the said structure, by these, it can prevent that the upper and lower comb teeth slip | deviate to an inner / outer direction, and can stop latching, and can raise the intensity | strength of a lock part.

  The present invention can be applied not only to a single corrugated clamp but also to a corrugated clamp attached to a protector that is externally mounted on a corrugated tube. That is, the lower half of the corrugated clamp protrudes along the periphery of the corrugated tube insertion hole on the outer end surface in the longitudinal direction of the protector, while the upper half of the lower half is connected to the lower half of the ring via a hinge. The ring portion is separated from the outer end face of the protector and is free. In this state, the corrugated tube sheathed on the electric wire drawn out from the protector is fitted to the lower half ring part, and then the upper half ring part is covered, and the above-mentioned comb-like lock part is locked and coupled. That's fine.

  As described above, according to the present invention, since the inner diameter of the holding portion of the corrugated clamp can be finely adjusted, the versatility of the corrugated clamp is enhanced, and one corrugated clamp is applied to corrugated tubes having various diameters. Can do. Accordingly, since it is not necessary to use different types of corrugated clamps in detail, it is possible to prevent erroneous attachment in the production process, and to reduce the number of parts, thereby reducing the man-hours for management and improving workability.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 5 show a first embodiment of the present invention. The corrugated clamp 10 is formed by integrally forming a holding portion 11 attached to the outer periphery of a required position of the corrugated tube T sheathed on the electric wire W and a clamp portion 17 for locking the electric wire W to a vehicle body panel (not shown). I have.

  The holding part 11 is formed by connecting one end sides of a pair of upper semi-annular part 12 and lower semi-annular part 13 with a thin hinge 14 having a semicircular cross section. Two crests 15a fitted to the troughs Ta of the corrugated tube T are arranged in parallel on the inner peripheral surface of the upper and lower semicircular ring parts 12 and 13 formed of semicircular recesses in the axial direction. The peaks 15a and valleys 15b are alternately continued.

  In addition, at the separation ends on both sides of the holding portion 11, there are provided upper and lower lock portions 21, 22 in which a plurality of locking pieces 25, 26 are projected in a comb-like shape with a required interval. Specifically, as shown in FIGS. 4 (A) and 4 (B), a plurality of locking pieces (upper comb teeth) 25 project downward from the upper base 23 at the tip of the upper semi-annular portion 12. A lock portion 21 is formed, and a lower lock portion 22 in which a locking piece (lower comb tooth) 26 protrudes upward from a lower base portion 24 is formed at the tip of the lower semi-annular portion 13. The upper comb teeth 25 of the upper lock portion 21 and the lower comb teeth 26 of the lower lock portion 22 mesh with each other, that is, the lower comb teeth 26 are adjacent to the recesses 27 between the adjacent upper comb teeth 25. The upper comb teeth 25 are arranged so as to fit in the recesses 28 between the comb teeth 26, respectively.

  As shown in FIGS. 5A, 5B, and 5C, a plurality of small cylindrical protrusions 29 are provided on the outer surface of the upper comb teeth 25 in the left-right direction. The small protrusions 29 are formed at a required interval over the entire length from the proximal end to the distal end of the upper comb tooth 25. On the other hand, on the outer surface of the lower comb tooth 26, a plurality of small protrusions 30 are provided in the left-right direction at a required interval over the entire length from the proximal end to the distal end of the lower comb tooth 26. The protrusion 30 has a tapered shape with a semicircular cross-sectional shape. Specifically, the upper surface of the small protrusion 30 includes an arc portion 30b that curves downward toward the tip 30a, and the lower surface is a flat locking surface 30c.

  As shown in FIG. 2, a clamp portion 17 is provided on the outer surface of the lower semi-annular portion 13 to insert and lock a locking plate 42 protruding from the vehicle body panel 41. A through hole 17a is provided inside the clamp portion 17, and a lock claw (not shown) is provided in the through hole 17a so as to be inserted and locked in a lock hole 42a formed in the locking plate 42. It has a configuration.

  When the corrugated clamp 10 having the above-described configuration is attached to the outer periphery of the corrugated tube T as shown in FIG. 2, after the upper and lower semicircular ring portions 12 and 13 are placed on the outer periphery of the corrugated tube T, FIGS. ), The upper and lower lock portions 21 and 22 are fitted as deeply as possible, and the upper and lower comb teeth 25 and 26 are alternately inserted. As a result, the small protrusions 29 of the upper comb teeth 25 are locked to the locking surfaces 30c of the small protrusions 30 of the lower comb teeth 26, so that the upper and lower lock portions 21 and 22 can be locked and at the same time shown in FIG. Thus, the diameter of the holding part 11 can be made to correspond to the outer diameter of the corrugated tube T, and the diameter can be maintained.

  When the corrugated clamp 10 is attached to the corrugated tube T ′ having a diameter larger than that of the corrugated tube T, as shown in FIG. 3 (B), the holding portions 11 are inserted by shallowly inserting the upper and lower lock portions 21 and 22. The diameter can be matched with the diameter of the corrugated tube T ′ while keeping the cross-sectional shape of the tube substantially circular. Thus, the diameter of the holding | maintenance part 11 can be finely adjusted by setting the insertion allowance of the up-and-down lock parts 21 and 22 arbitrarily.

  Furthermore, as shown in FIG. 5 (B), the small protrusion 30 of the lower comb tooth 26 is easily bent in the insertion direction because the arc portion 30b is formed on the distal end side of the upper surface serving as the insertion side surface. Even when the small protrusions 30 of the lower comb teeth 26 and the small protrusions 29 of the upper comb teeth 25 collide when the comb teeth 25 and 26 are fitted, the upper comb teeth 25 can be inserted smoothly. On the other hand, since the small protrusion 30 has a flat locking surface 30c on the lower surface, the small protrusion 30 hardly bends in the anti-insertion direction, and, as shown in FIG. 30 is hard to come off, and the locked state of the upper and lower lock portions 21 and 22 can be stably maintained.

  6 and 7 show a second embodiment of the present invention, in which a corrugated clamp is integrally provided on a protector 51 through which a corrugated tube T is inserted.

  As shown in FIG. 6, the protector 51 includes a protector main body 52 and a lid 53 integrally formed on the upper end of one side wall of the protector main body 52 via a thin hinge 54, and the protector main body 52 and the lid 53. Are locked by the lock portions 55a and 55b.

  The protector main body 52 has a bowl shape with both front and rear opening portions including a bottom wall portion 52a and side wall portions 52b and 52c. The front side wall 52d is also formed on the front end surface, and the corrugated tube T is inserted into the front side wall 52d. A circular insertion hole 56 is provided. On the outer surface of the front side wall 52d, a corrugated clamp 10A is integrally formed on the periphery of the insertion hole 56.

  Specifically, the lower half annular portion 13 of the corrugated clamp 10A is integrally protruded from the lower half periphery of the insertion hole 56, and the upper half annular portion 12 is thin with the lower half annular portion 13. Although connected through the hinge 14, it is separated from the protector body 52 and the lid 53. Since the other configuration of the corrugated clamp 10A is the same as that of the corrugated clamp 10 of the first embodiment, the same reference numerals are given and description thereof is omitted.

  The protector 51 is originally capable of inserting corrugated tubes T of various diameters, but the corrugated clamp 10A also has corrugated tubes T of various diameters depending on the structures of the comb teeth 25 and 26 of the upper and lower lock portions 21 and 22. Therefore, by integrating the protector 51 and the corrugated clamp 10A, as shown in FIG. 7, it is not necessary to fix the tape around the corrugated clamp T of the protector 51. It is possible to protect electric wires of various diameters and to lock the vehicle body.

  8A and 8B show a corrugated clamp 10B according to a third embodiment of the present invention. This corrugated clamp 10B is different from the upper lock portion 21 of the corrugated clamp 10 of the first embodiment in the shape of the upper lock portion 21B, but is otherwise the same in configuration, and therefore is described with the same reference numerals. Omitted.

  The upper lock portion 21 </ b> B includes a pressing wall 31 protruding downward from the upper base portion 23 on the inner surface side of the comb teeth 25 in parallel with the comb teeth 25. A small protrusion 29 is provided on the upper comb tooth 25 and a small protrusion 30 is provided on the lower comb tooth 26.

  In this embodiment, as shown in FIG. 8B, when the upper lock portion 21B is inserted into the lower lock portion 22B, the fitting state of the upper and lower comb teeth 25 and 26 can be stabilized by the pressing wall 31. it can.

  9A and 9B show a corrugated clamp 10C according to a fourth embodiment of the present invention. The corrugated clamp 10C is different from the upper and lower lock portions 21 and 22 of the first embodiment in the shape of the upper and lower lock portions 21C and 22C.

The upper lock portion 21 </ b> C has a pressing wall 32 that is integrated with the comb teeth 25 projecting downward from the upper base portion 23 on the inner surface side of the comb teeth 25. The lower lock portion 22 </ b> C has a pressing wall 33 integrated with the comb teeth 26 protruding upward from the lower base portion 24 on the outer surface side of the comb teeth 26.
A small protrusion 29 is provided on the upper comb tooth 25 and a small protrusion 30 is provided on the lower comb tooth 26.

In this embodiment, as shown in FIG. 9 (B), when the upper and lower lock portions 21C and 22C are inserted, the inner and outer pressing walls 32 and 33 regulate the blurring of the upper and lower comb teeth 25 and 26 in the inner and outer directions. The upper and lower comb teeth 25 and 26 can be more reliably and stably fitted.
The small protrusion 29 on the outer surface of the outer end of the upper comb tooth 25 is protected by being positioned inside the lower comb tooth 26 of the lower outer end, so that no breakage occurs.

  10A and 10B show a corrugated clamp 10D according to the fifth embodiment of the present invention. In this corrugated clamp 10D, the shape of the lower lock portion 22D is different from the lower lock portion 22 of the first embodiment.

  The lower lock portion 22D protrudes from the lower base portion 24 on both the inner and outer surfaces of the lower comb teeth 26, with pressing walls 34 and 35 integrated with the lower comb teeth 26. As a result, a plurality of comb insertion holes 36 are arranged in parallel on the upper surface of the lower lock portion 22D, and the upper comb teeth 25 of the upper lock portion 21 are inserted into the comb teeth insertion port 36 and locked. A small protrusion 29 is provided on the upper comb tooth 25 and a small protrusion 30 is provided on the lower comb tooth 26.

  In the present embodiment, when the upper lock portion 21D and the lower lock portion 22D are fitted, the inner and outer surfaces of the upper and lower comb teeth 25 and 26 are sandwiched between the pressing walls 34 and 35, so the comb teeth 25 and 26 are in the inner and outer directions. Can be prevented from being displaced, and a very stable fitting state can be maintained.

  Note that the present invention is not limited to the above-described embodiment, and in particular, the pressing wall may be provided on either the upper lock portion or the lower lock portion, or on either the upper or lower side.

1 is an overall perspective view of a corrugated clamp according to a first embodiment of the present invention. It is a perspective view which shows the state which attached the corrugated clamp shown in FIG. 1 to the corrugated tube. It is sectional drawing which shows the state which attached the corrugated clamp shown in FIG. 1 to the corrugated tube, (A) shows the state attached to the thin corrugated tube, (B) is the figure which shows the state attached to the thick corrugated tube. . It is an enlarged front view which shows the locking part of a corrugated clamp, (A) shows the state before a lock | rock, (B) is a figure which shows the state after a lock | rock. It is an enlarged view which shows the principal part of the lock | rock part of FIG. 4, (A) is a side view, (B) is a front view which shows the state in the time of lock work, (C) shows the state after a lock | rock. It is a front view. It is a whole perspective view which shows the protector with a corrugated clamp which concerns on 2nd Embodiment of this invention. It is a perspective view which shows the state which attached the protector shown in FIG. 6 to the corrugated tube. The principal part of the corrugated clamp which concerns on 3rd Embodiment of this invention is shown, (A) is an expansion perspective view, (B) is sectional drawing of a locked state. The principal part of the corrugated clamp which concerns on 4th Embodiment of this invention is shown, (A) is an expansion perspective view, (B) is sectional drawing of a locked state. The principal part of the corrugated clamp which concerns on 5th Embodiment of this invention is shown, (A) is an expansion perspective view, (B) is sectional drawing of a locked state. It is a figure of a prior art example. It is a figure of another prior art example.

Explanation of symbols

10, 10A to 10D Corrugated clamp 11 Holding part 12 Upper half annular part 13 Lower half annular part 17 Clamp part 21, 21A-21D Upper lock part 22, 22A-22D Lower lock part 25 Upper comb teeth (locking piece)
26 Lower comb teeth (locking piece)
29, 30 Small projections 31-35 Holding wall 41 Body panel 42 Locking plate

Claims (3)

A corrugated clamp that is integrally provided with a holding portion that is attached to a corrugated tube sheathed on an electric wire and a clamp that locks the electric wire to a vehicle body panel,
The holding part is formed by connecting one end side of an upper semi-annular part and a lower semi-annular part formed by alternately and continuously forming peaks and valleys in the axial direction with a thin hinge part. It is provided with a lock part that is detachably locked, and is integrally provided with a clamp on which a fixed piece protruding from the vehicle body panel is inserted and locked on the outer surface of one lock part,
Each of the lock portions provided on the other end side of the upper and lower semicircular ring portions includes a plurality of locking pieces in a comb-teeth shape, and includes a small protrusion with a predetermined interval on the outer surface of each comb tooth,
The small protrusion of the one lock portion is a flexible cylindrical shape, while the small protrusion of the other lock portion has an arcuate shape on the insertion side surface and the opposite surface is a flat locking surface,
The upper and lower semi-annular rings are formed by alternately inserting the comb teeth of the lock portion on one side between the comb teeth of the other lock portion and engaging the small projections to arbitrarily set the lock positions of both lock portions. The corrugated clamp is characterized in that the diameter of the annular part formed by the part is adjustable. A corrugated clamp that is integrally provided with a holding portion that is attached to a corrugated tube sheathed on an electric wire and a clamp that locks the electric wire to a vehicle body panel,
The holding part is formed by connecting one end side of an upper semi-annular part and a lower semi-annular part formed by alternately and continuously forming peaks and valleys in the axial direction with a thin hinge part. It is provided with a lock part that is detachably locked, and is integrally provided with a clamp on which a fixed piece protruding from the vehicle body panel is inserted and locked on the outer surface of one lock part,
Each of the lock portions provided on the other end side of the upper and lower semicircular ring portions includes a plurality of locking pieces in a comb-teeth shape, and includes a small protrusion with a predetermined interval on the outer surface of each comb tooth,
The upper and lower semi-annular rings are formed by alternately inserting the comb teeth of the lock portion on one side between the comb teeth of the other lock portion and engaging the small projections to arbitrarily set the lock positions of both lock portions. The diameter of the annular part formed by the part can be adjusted, and
A pressing wall is provided on at least one of the inner surface side and the outer surface side of the comb teeth,
Alternatively, either one of the upper and lower comb teeth protrudes in parallel from the bottom wall inside an enclosure having a U-shaped cross section composed of the inner wall, the outer wall, and the bottom wall, and the other comb tooth is inserted into the enclosure. Corrugated clamp that engages and locks the comb teeth . On the end face side of the protector through which the corrugated tube is inserted, the lower semi-annular portion is projected along the outer periphery of the insertion hole, and the upper semi-annular portion is inserted into the lower semi-annular portion via the thin hinge. The corrugated clamp according to claim 1, wherein the corrugated clamp is formed separately from an end face of the protector .

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