JP3409658B2 - Unity band - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a binding band in which a locking portion locks and binds a band portion wound around a member, and more specifically, the band portion is degraded due to deterioration of the locking function during binding work. The present invention relates to a product that has improved reliability by being prevented from coming off or slipping.

[0002]

2. Description of the Related Art Conventionally, a binding band 1 as shown in FIGS. 6 and 7 is known, and this binding band 1 has a band portion 2 having a serrated engagement groove 2a formed on one surface side. On the base end side, an engaging portion 3 is provided which engages the engaging claw 3a with the engaging groove 2a and engages with the engaging groove 2a to stop the movement in the returning direction.

The binding band 1 is, for example, as shown in FIG. 8, a long member (a wire harness W in which electric wires are bundled).
Etc.) and the band part 2 is wound around and locked by the locking part 3 so that the clip 4 provided on the locking part 3 side is inserted into a mounting hole formed in a vehicle panel or the like. By fixing, the united member can be attached. In the figure, 5 is an elastic piece that holds the periphery of the clip 4 with the clip 4 when the clip 4 is inserted into the mounting hole.

[0004]

However, in such a conventional binding band, the band portion 2 is inserted from the tip to the locking portion 3 during the binding work so that the engaging claw 3a has its own elastic force. In order to tighten the member wound around the band portion 2 by vigorously pulling out while engaging with the engaging groove 2a while slidingly engaging the engaging groove 2a, as shown in FIG. 9, the engaging claw 3a is deformed by frictional heat or worn. There is a case in which the shape that is deformed and comes into close contact with the engaging groove 2a is sagged (hereinafter, simply referred to as sagging of the engaging claw), and the movement of the band 2 in the returning direction cannot be reliably locked. is there. If the locking function is impaired in this way, the member for binding the binding band 1 may be displaced, and as shown in FIG. 10, the unnecessary band portion 2 pulled out from the locking portion 3 may be a nipper or the like. Since it is cut by the cutting tool of FIG.
There is a case that it comes off from a.

Therefore, according to the present invention, by preventing the engagement claws of the engagement portion from sagging, it is possible to prevent deterioration of the engagement function in the binding work and to improve reliability. With the goal.

[0006]

In order to achieve the above object, the invention according to claim 1 has a flexible band portion which is formed long and provided with an engagement groove which is continuous in the extending direction, and An insertion hole for inserting the band portion and a locking portion having an engaging claw for engaging the engagement groove of the band portion inserted in the insertion hole and locking movement of the band portion in the returning direction are connected. In the binding band provided, the band portion and the locking portion are continuously arranged so that the engagement groove is on the inner surface side and the positional relationship is such that the band portion is inserted into the insertion hole, and the band portion is provided in the insertion hole of the locking portion. And a guide portion for guiding the engagement groove of the band portion and the engagement of the engagement claw by deforming by a force of a certain amount or more applied at the time of bundling and guiding the claw to a position separated from the engagement claw. To do.

According to the first aspect of the invention, the member is tightened and bound by wrapping it around the member with the engaging groove of the band portion on the inner surface side and inserting and pulling it out through the insertion hole of the locking portion. The band portion in the insertion hole is guided by the guide portion to a position separated from the engaging claw, and then the guide portion is deformed by the force for tightening the member to approach the engaging claw and the engaging groove is engaged. That is acceptable. Therefore, the engaging groove of the band portion can come into contact with and engage with the engaging claw of the engaging portion only immediately before the end of the binding work.

According to a second aspect of the present invention, in addition to the structure of the first aspect of the invention, the band portion is formed with a smooth continuous sliding surface on both sides in the extending direction, and the sliding surface is provided between the sliding surfaces. A guide groove of the engaging portion is formed in a projecting piece shape projecting from a side wall of the insertion hole to a position facing the sliding surface of the band portion while engraving a mating groove. .

According to the second aspect of the present invention, the band portion is formed with the engaging groove on the inner surface side facing the member, and smooth sliding surfaces are formed on both sides of the engaging groove and the engaging groove is formed. The guide portion of the stop portion is formed in a protruding piece shape protruding from the side wall of the insertion hole at a position where the guide portion faces and guides the sliding surface of the band portion. Therefore, the engaging groove of the band portion is not caught on the surface of the member or the guide portion.

According to a third aspect of the present invention, in addition to the structure of the first or second aspect of the invention, a band portion which is locked by an engaging claw is engaged in the insertion hole of the locking portion. It is characterized in that an elastic piece is provided which is biased by an elastic force that elastically returns in the claw direction. According to the third aspect of the invention, the band portion is biased toward the engaging claw by the elastic force of the elastic piece that elastically returns when the engaging part is locked by the engaging claw. Therefore, even if the engagement force with which the engagement groove of the band portion engages with the engagement claw of the locking portion becomes loose due to some reason such as vibration of the member, it is possible to prevent the engagement position from shifting. .

[0011]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described below with reference to the drawings. 1 to 5 are views showing an embodiment of a binding band according to the present invention. In the present embodiment, description will be given of a case where the same configuration described in the above-mentioned conventional technique is denoted by the same reference numeral, and is applied to a binding band with a clip used when attaching the wire harness W to a panel of a vehicle. .

1 to 3, reference numeral 10 denotes a binding band made of a resin material. The binding band 10 includes a band portion 11 which is elongated and has flexibility and an insertion hole 22.
A locking portion (21) for locking the movement of the band portion (11) inserted therein in the returning direction is continuously provided. On the back surface side (the back surface side of the insertion hole 22 of the locking portion 21) of the band portion 11, a serrated engagement groove 13 continuous in the extension direction is engraved at the center thereof with smooth sliding surfaces 12 on both sides. On the other hand, an engaging claw 23 that meshes with and engages with the engaging groove 13 of the band portion 11 is formed in the engaging portion 21 in the insertion hole 22. The engaging groove 13 and the engaging claw 23 are swung by the engaging groove 13 when the band portion 11 is inserted into the insertion hole 22 of the locking portion 21 from the opposite side and pulled in a pulling direction. By which the movement of the band portion 11 is allowed, and when a force is applied in the returning direction, the engaging claw 23 meshes with and engages with the engaging groove 13 to limit (lock) the movement of the band portion 21. It is formed in a sawtooth shape.

Therefore, as shown in FIG. 5, the binding band 10 has the band portion 11 wrapped around (without being caught in the engagement groove 13) while sliding the inner surface side of the surface of the wire harness W by the sliding surface 12. By being inserted into and pulled out from the insertion hole 22 of the locking portion 21, the engagement groove 13 of the band portion 11 is engaged with the engagement claw 23, and the wire harness W can be tightened and bound. After this, tie band 10
When the clip 4 is inserted into a mounting hole opened in the panel of the vehicle from the head, the pair of bending portions 4a, whose cross section of the clip 4 expands in an arc shape, elastically deforms and then returns to its shape, while the elastic piece 5 By abutting against the surface of the panel and elastically deforming, the wire harness W bound by sandwiching the edges of the mounting holes between them can be mounted and fixed.

The locking portion 21 has a band portion to be inserted therethrough.
An elastic piece 24 that elastically deforms by 11 and urges the band portion 11 toward the engaging claw 23 by the elastic force that tries to return elastically is formed in the insertion hole 22 at a position facing the engaging claw 23. In addition, on both side walls of the insertion hole 22, the engaging groove 13 is formed on the engaging claw 23 by being positioned between the engaging claw 23 and the elastic piece 24 and making surface contact with the sliding surface 12 of the band portion 11. A guide piece (guide portion) 25 that restricts sliding contact is projected. This guide piece 25 allows the band portion 11 to pass through the insertion hole of the locking portion 21.
The strength (thickness) is such that the wire harness W is not deformed by a force enough to be inserted into the wire 22, but is deformed by the tension when the wire harness W is tightened and bound.

Therefore, when binding the wire harness W, the band portion 11 guides by sliding contact with the guide piece 25 without being caught by the sliding surface 12 in a state of being separated from the engaging claw 23 as shown in FIG. When a force for tightening the wire harness W is applied, the guide piece 25 is deformed as shown in FIG. 5, so that the engaging groove 13 is brought into meshing engagement with the engaging claw 23 in the vicinity thereof. Therefore, the engagement groove 13 of the band portion 11 can be brought into contact with and engaged with the engagement claw 23 of the locking portion 21 only immediately before the binding work is completed. The guide piece 25 can be easily deformed by a tightening force, but the sliding surface 12 of the band portion 11 continues to be in sliding contact by this time, so that the elastic force for elastically returning the guide piece 25 is sufficiently small.

Further, the band portion 11 in which the engaging groove 13 engages with the engaging claw 23 is urged toward the engaging claw 23 by the elastic force of the elastic piece 24 from the back surface side thereof, so that the vibration of the vehicle is vibrated. Thus, even if the tightening force of the wire harness W is momentarily loosened, it is possible to prevent the engagement position of the engagement claw 23 and the engagement groove 13 from being displaced. Further, since the engaging claw 23 is meshingly engaged with each other in the engaging groove 13 formed between the sliding surfaces 12, the relative position of the engaging claw 23 and the engaging groove 13 can be moved in the left-right direction. Is limited by the sliding surface 12, which also prevents the meshing position from shifting.

As described above, in this embodiment, when the band portion 11 is simply pulled out from the insertion hole 22 of the engaging portion 21, the engaging groove is formed.
It is possible to prevent the engagement claw 23 from sagging due to the sliding contact of the engagement claw 23, and the engagement claw 23 engages with the engagement groove 13 only immediately before the completion of the bundling work to ensure the engagement. Can be made. Therefore, it is possible to prevent the locking function from deteriorating due to the binding work, and to prevent the positional displacement of the wire harness W and the band portion 11 from coming off the locking portion 21.

Further, when the banding portion 11 is slid by the sliding surface 12 during the binding work, the engagement groove 13 is not caught by the surface of the wire harness W or the guide piece 25, thereby hindering the binding work. Further, after the wire harness W is tightened and bound, the engaging groove 13 of the band portion 11 is
It is possible to prevent the elastic piece 24 from being biased by the elastic force so as to be meshed with 23 and the meshing position being displaced.

In the present embodiment, the band portion 11 deforms the guide piece 25 so that the engaging groove 13 engages with the engaging claw 23, but instead of the guide piece 25, the insertion hole 22 is formed. A rib or a protrusion-shaped guide portion is formed on the side wall, and when a tightening force is applied, the band portion 11 itself deforms to pass over the guide portion and the engaging groove 13 engages with the engaging claw 23. You may.

Further, in the present embodiment, the case where the band portion 11 whose cross-sectional shape is a thin plate is described, but the cross-sectional shape of the band portion is box-shaped, and the deformed guide piece 25 holds the side surface thereof. You may do it. Further, in the present embodiment, the case where the elastic piece 24 is provided to improve reliability has been described, but since tension is generated in the band portion 11 at the time of tightening, it is easy to omit the elastic piece 24. Moreover, the engaging position of the engaging claw 23 and the engaging groove 13 does not shift.

[0021]

According to the first aspect of the invention, the band portion in which the engaging groove is engaged with the engaging claw in the insertion hole of the engaging portion and is engaged is subjected to a force for tightening the member. The guide is deformed when the tightening force is applied, and the guide groove is brought closer to the engaging claw to engage the engaging groove, so that the band is inserted through the engaging part. When simply pulling out from the hole, the engaging groove can be prevented from slidingly contacting the engaging claw, and the engaging groove can be engaged with the engaging claw only immediately before the end of the binding work. Therefore, the engaging claws of the engaging portion are not sagged, and it is possible to prevent the engaging function from being deteriorated by the binding work. As a result, it is possible to reliably prevent displacement of the bound members and disengagement of the band portion from the locking portion, and it is possible to improve reliability.

According to the second aspect of the present invention, since the band portion is in sliding contact with the member surface or the guide portion where the sliding surfaces on both sides of the engaging groove are united, the engaging groove is caught on the member surface or the guide portion. It does not hinder the binding work and does not impair the workability. According to the third aspect of the present invention, the band portion is biased toward the engaging claw in which the engaging groove is engaged by the elastic force of the elastic piece that returns elastically, so It is possible to prevent the tightening force for bundling the members from being lowered by maintaining the meshing position of, and to further improve the reliability.

[Brief description of drawings]

1A and 1B are views showing an embodiment of a binding band according to the present invention, in which FIG. 1A is a perspective view obliquely from above and FIG. 1B is a perspective view obliquely from below.

FIG. 2 is a side sectional view thereof.

FIG. 3 is a side view of the locking portion.

4A and 4B are diagrams showing a state of a locking portion inserted through the band portion, FIG. 4A is a side sectional view thereof, and FIG. 4B is a side view from the side of the band portion.

FIG. 5 is a view showing a state of the locking portion in a state different from that of FIG. 4 in which the band portion is inserted.

FIG. 6 is a perspective view illustrating the related art.

FIG. 7 is a side sectional view thereof.

FIG. 8 is a side sectional view illustrating its use.

FIG. 9 is an enlarged cross-sectional view of a main part for explaining the problem.

FIG. 10 is a side sectional view illustrating the problem.

[Explanation of symbols]

4 clips 10 cable ties 11 Band 12 sliding surface 13 Engagement groove 21 Locking part 22 insertion hole 23 Engaging claw 24 elastic piece 25 Guide piece (guide part) W wire harness

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B65D 63/12 F16L 3/12 H02G 3/30

Claims (3)

(57) [Claims] 1. A flexible band portion formed in a long shape and provided with engagement grooves continuous in the extension direction, an insertion hole for inserting the band portion, and a band portion inserted in the insertion hole. A binding band in which an engaging portion having an engaging claw that engages with the engaging groove and engages with the movement of the band portion in the returning direction is provided in series, with the engaging groove being the inner surface side The band portion and the locking portion are continuously provided so as to have a positional relationship of insertion, and the band portion is guided into the insertion hole of the locking portion to a position away from the engaging claws and a certain amount or more added at the time of binding. A binding band, characterized in that it is provided with a guide part that is deformed by force and allows the engagement groove of the band part and the engagement of the engagement claw. 2. The band portion is formed with smoothly continuous sliding surfaces on both sides in the extension direction, and an engaging groove is formed between the sliding surfaces, while the guide portion of the locking portion is an insertion hole. The binding band according to claim 1, wherein the binding band is formed in a protruding piece shape that protrudes from a side wall of the band portion to a position facing the sliding surface of the band portion. 3. An elastic piece for urging an elastic force that elastically restores the band part locked by the engaging claw toward the engaging claw is provided in the insertion hole of the locking part. The binding band according to claim 1 or 2.