JP5857933B2 - Fastening band mounting structure - Google Patents

Description

The present invention relates to a mounting structure for a fastening band, and more particularly, it is attached to a material to be fastened by locking locking claws provided at both ends of a metal band-shaped band main body to a locking hole. It is preferably used for a material to be clamped made of a cable shielding exterior material.

  Conventionally, as this type of tightening band, Japanese Patent Application Laid-Open No. 2004-169754 (Patent Document 1) has proposed a tightening band having a circular shape shown in FIG. The tightening band 100 has a rounded ring shape by overlapping both ends 101 and 102 of a curved metal band, and locking holes 105 provided at both ends with locking claws 103 and 104 provided at both ends, respectively. , 106 is inserted and locked. A notch portion 110 is provided in the central portion of the metal band of the fastening band 100 in the length direction so as to be narrow, and the notch portion 110 has an end portion when inserted into the locking claw and the locking hole. A bifurcated end 111 formed at the tip of 101 is inserted to absorb the inner and outer steps.

  Further, a fastening band having a circular shape similar to that of Patent Document 1 is proposed in Japanese Patent Application Laid-Open No. 2004-301140 (Patent Document 2) as shown in FIG. The fastening band is provided with a tongue-like end portion 120 on one end side of the overlapping portion of both end portions of the metal strip, and a stepped portion 121 fitted to the tongue-like end portion 120 on the other end side. Yes. In addition, a recess 130 is provided instead of the notch 110 of Patent Document 1, and a separate cross correction member 131 is attached.

JP 2004-169754 A JP 2004-301140 A

  Recently, high-voltage cables routed in electric vehicles and hybrid vehicles are covered with a shield member made of metal braided wire, and one end of the shield member is covered with a shield shell of a connector connected to the high-voltage cable and tightened with a metal band. In addition, the other end of the shield member is put on a metal tube covered with a high voltage cable and fixed with a metal band. The shield shell and the metal tube covering the shield member may have a rectangular or elliptical outer shape in cross section.

  On the other hand, the metal fastening bands proposed in Patent Documents 1 and 2 are all round rings. When the cross-section of the material to be tightened is a perfect circle, a tightening force can be applied uniformly over the entire length of the tightening band. However, when the cross-section of the material to be tightened is not a perfect circle like the shield shell but has a short side and a long side formed of a rectangle or an ellipse, the long side has a fastening band. There is a problem that the tightening force is difficult to be applied and the tightening force is weaker than that of the short side portion.

  Further, when both ends of the tightening band are overlapped and joined, a step is generated at the end of the overlapped portion, and a gap is generated between the material to be tightened. In such a place where the gap is generated, the tightening force is reduced because the tightening band cannot be tightly adhered to the material to be tightened. In particular, since the tightening force is relatively weak at the long side portion of the material to be tightened as described above, if a gap due to a step at the overlapping end occurs at the long side portion, the tightening force at the long side portion is extremely high. There is a problem that becomes weaker.

Further, in Patent Document 1, since the bifurcated end portion 111 at one end enters the cutout portion 110, the length in which both end portions 101 and 102 are overlapped is very long. In addition, the length of this kind of metal fastening band, which has been widely used in the past, is formed to be about 150% of the circumference of the material to be fastened (that is, the length of one and a half rounds), and is approximately the total length of the band. 50% overlaps.
As described above, when the length of the overlapping portion is increased, there is a problem that the material cost increases, and the band connecting workability at both end portions 101 and 102 is deteriorated.
Further, in the form in which the overlapped portion is large, if a coupling portion in which the locking claw is inserted and locked in the locking hole is provided at both ends in the longitudinal direction of the overlapping portion, the dimension between the pair of coupling portions is Become big. Therefore, after joining one joint part, the material to be fastened must be turned over and the other joint part must be joined, and both joint operations cannot be performed continuously by one-handed work by an operator. There is also the problem of getting worse.

  Furthermore, in Patent Documents 1 and 2, only locking claws provided at both ends of a fastening band made of a metal band are inserted and locked into locking holes and coupled. Therefore, in order to increase the binding force, it is necessary to pull the metal strip strongly and insert the locking claw into the locking hole to reduce the diameter of the ring. There is a problem.

The present invention has been made in view of the above problems. Even when a material to be fastened having a long side portion and a short side portion having a rectangular or elliptical cross section is tightened, the long side portion is extremely tightened. it is possible to prevent the urging force is weakened, and has an object to provide a mounting structure of the tightening band that can improve the binding work of the binding portions provided at both ends of the band.

In order to solve the above-described problems, the present invention provides a connector shell in which a cross section covering a connector connected to an end of a high-voltage cable is a rectangle or an ellipse having a pair of long sides and a pair of short sides, and the high-voltage A shield member that covers the cable and the connector shell is a tightening material, and includes a metal tightening band that covers the shield member on the outer periphery of the connector shell and is fastened and fixed to the connector shell .
The fastening band is provided with a first polymerization portion and a second polymerization portion that overlap each other on the inner and outer circumferences at both longitudinal ends of the band-shaped band main body, and either the first polymerization portion or the second polymerization portion A locking claw is provided and a locking hole is provided on the other side, and a coupling part is formed by inserting and locking the locking claw into the locking hole.
A caulking portion that is caulked so as to reduce the diameter of the band main body in a state where the first overlapping portion and the second overlapping portion are locked by the coupling portion is provided,
A fastening band mounting structure , characterized in that the coupling portion is positioned on one of the short sides of the material to be fastened and the crimping portion is positioned on the other short side. providing.

As described above, the fastening band used in the present invention is such that the coupling portion for inserting and locking the locking claw into the locking hole is positioned on the short side portion instead of the long side portion where the clamping force is difficult to act. Therefore, it is possible to prevent the tightening force from becoming extremely weak at the long side portion.

Further, the tightening band used in the present invention is one in which the ends of the band main body are overlapped and joined, and the joining portion is located on the short side, so the length of the overlapping portion is shortened as described above. Compared with the case where a length of about one and a half is required as in the prior art, the material cost can be saved and the joining workability is improved.

  Furthermore, after the first and second overlapping portions are overlapped and the locking claw is inserted and locked into the locking hole and temporarily joined, the swaged portion at the opposite position is swaged, and the locking claw is locked to the locking hole. Since it is moved to the edge to increase the locking force and the main coupling is performed, it is not necessary to pull the metal band body strongly for the temporary coupling operation for inserting and locking the locking claw into the locking hole. A burden can be reduced, and a strong fastening force can be applied to the coupling portion.

  In addition, the first polymerization and the second polymerization are provided by providing at least one locking claw and a locking hole at a distance in the longitudinal direction at the leading ends of the first polymerization part and the second polymerization part. It is preferable that at least two coupling portions are provided in the overlapping portion with the portion, and the at least two coupling portions are all positioned on the one short side portion. In this configuration, it is possible to more stably join the tightening band by providing two joints, and further, by arranging all the two joints on one short side, The interval between the connecting portions is shortened, and the connecting workability is good.

Further, the outer periphery of the connector shell over the connector connected to an end of the high-voltage cables, said covering shield member to be the high voltage cable and a configuration in which fastened at the fastening band, the shield member by clamping band Can be stably clamped to the outer periphery of the connector shell, whereby the shield member can be prevented from falling off at the long side portion of the connector shell and the shield function being partially reduced.

Rectangular cross-section, oval or short sides and the connector shell and the connector Rukin genus steel band fastening be used for the fastened member made of the shield member for covering the shell having a long side made of elliptical The first and second overlapping portions at both ends in the length direction are overlapped in one short side portion, and the locking claws and the locking holes provided in the first and second overlapping portions are inserted and locked. Since the coupling portion is positioned on the short side portion and not on the long side portion where the tightening force is difficult to be applied, it is possible to prevent the tightening force from becoming extremely weak in the long side portion.
Furthermore the fastening band, because the are those ends are joined by superposed coupling portion of the band body is located on the short sides, overlapping portions of such is of the prior art will be described shorter length Compared with the case where a length of about one and a half is required, the material cost can be saved and the joining workability is improved.

The fastening band of 1st Embodiment is shown, (A) is a perspective view before couple | bonding both ends in a ring shape, (B) is a perspective view of the state couple | bonded in the ring shape. (A) is a schematic view of a state of being temporarily coupled by attaching a band the tightening to clamp object member of rectangular cross section, (B) in the approximate schematic diagram of a state that the bonded crimped caulking portion is there. It is drawing which shows the to-be-clamped material using the said clamping band. It is a principal part perspective view of FIG. It is sectional drawing which shows reference 2nd Embodiment. It is sectional drawing which shows reference 3rd Embodiment. It is a perspective view which shows a prior art example. It is a perspective view of another prior art example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 4 show the attachment structure of the fastening band of the first embodiment.

The fastening band 1 is made of a caulking type metal fastening band, and the band body 2 is formed from a thin strip-like thin plate made of a stainless steel plate having spring properties. The band body 2 is wound around the outer surface of a rectangular fastening material 20 having a pair of long side portions 20a, 20b and a pair of short side portions 20c, 20d. With the first overlapping portion 5 and the second overlapping portion 6 provided on the inner and outer circumferences, the locking claws provided on the first and second overlapping portions 5 and 6 are locked in the locking holes. Fixing that temporarily joins a rectangular frame-shaped ring, and fastens the crimping portion 3 provided in the band main body 2 in this state to make the temporary joint a main joint, and fastens the fastening band 1 to the material 20 to be fastened. To do.
In addition, although the cross section of the to-be-fastened material 20 in this embodiment is processed into the round shape at four corners, it is not a perfect rectangle, but in the present invention, such a shape is also included in the to-be-fastened material having a rectangular cross section. Shall be.

  The band main body 2 of the fastening band 1 is an arc shape that connects a pair of parallel straight long side portions 2a and 2b and both ends of the long side portions 2a and 2b in a state of being temporarily joined to the rectangular frame shape. Are bent in advance so as to form a ring having an oval cross section composed of the short sides 2c and 2d. One short side portion 2c is formed by temporarily joining the first and second overlapping portions 5 and 6 on both ends of the band body 2 on the inner and outer circumferences, and the caulking portion at the center of the other short side portion 2d. 3 is provided.

  As shown in FIG. 1 (B), the first superposition 5 of the band body 2 is an outer periphery and the second superposition portion 6 is an inner periphery, and the two are superposed on the inner and outer periphery. Each of the first and second overlapping portions 5 and 6 is provided with one locking claw 7 and 8 on the tip side, and one locking claw 7 and 8 is spaced apart from each other in the length direction. Holes 9 and 10 are provided. The locking claw 7 of the first overlapping portion 5 positioned on the outer peripheral side is bent downward, while an upward bulging portion 10a is provided at the end of the locking hole 10 of the second overlapping portion 6 on the inner peripheral side, The claw 7 is inserted into the locking hole 10 so that it can be locked to the lower surface of the bulging portion 10a. Further, the locking claw 8 of the second overlapping portion 6 is bent upward and inserted into the locking hole 9 made of a long hole of the first overlapping portion 5, and the locking claw 8 is engaged when the caulking portion 3 is caulked. The inside of the stop hole 9 is movable, and is locked to the leading edge 9 e of the lock hole 9.

  A locking portion between the locking claw 7 and the locking hole 10 is a first coupling portion A, and a locking portion between the locking claw 8 and the locking hole 9 is a second coupling portion B. In the present invention, two coupling portions are not necessarily required, but by providing two, the fastening band 1 can be coupled more stably. And since the 1st, 2nd superposition | polymerization parts 5 and 6 are located in the short side part 2c, both the said 1st coupling | bond part A and the 2nd coupling | bond part B are short in any state of temporary coupling | bonding and this coupling | bonding. Located in the side 2c. The dimension (L) at the time of provisional coupling between the first coupling part A and the second coupling part B is a dimension that allows an operator to couple by one-hand work, and is, for example, 5 cm or less.

  In addition, a positioning hole 11 is provided in the central portion between the locking claw 7 and the locking hole 9 of the first overlapping portion 5, and the positioning protrusion 12 that is loosely inserted into the positioning hole 11 is connected to the locking claw of the second overlapping portion 6. 8 and the locking hole 10. The fitting position between the positioning projection 12 and the positioning hole 11 is located at the approximate center of the short side 2c, and is opposed to the caulking part 3 provided at the center of the other short side 2d.

  Furthermore, while providing the U-shaped piece 13 provided with the notch groove 13u in the center at the front-end | tip of the 2nd superposition | polymerization part 6 of the inner peripheral side, the 1st superposition | polymerization part 5 of the outer peripheral side of the part which this U-shaped piece 13 overlaps is provided. The U-shaped piece 13 and a stepped protrusion 14 that is continuous in a plane are provided by being inserted into the notch groove 13u. Thereby, the outer peripheral surface of the fastening band 1 which contacts the to-be-fastened material 20 is made to continue without a level | step difference.

  The caulking portion 3 provided at the center of the short side portion 2d is projected outward in a U-shape, and the U-shaped side portions 3a and 3b are sandwiched by caulking jigs so as to be easily caulked. . Further, an inwardly bulging portion 3d is provided in the central portion 3c, and as shown in FIG. 2 (B), it is easily folded and overlapped during caulking. In the caulking portion 3, the tightening force tends to decrease because the caulking portion 3 cannot be in close contact with the material 20 to be fastened at the center portion 3 c.

  The metal fastening band 1 overlaps the first and second overlapping portions 5 and 6 so that the first and second coupling portions A and B located in the overlapped portion are positioned in the short side portion 2c. Therefore, the length of the portion where the first and second overlapping portions 5 and 6 are overlapped is at least less than 25% of the entire circumference of the fastened material 20. And since such a dimension setting is made, it becomes the exclusive fastening band used for the specific material 20 to be fastened. In addition, a step is generated at the inner peripheral end portion of the overlapped portion of the first and second overlapping portions 5 and 6, and a gap is generated between the material to be fastened 20. In such a place where the gap is generated, the fastening force is reduced because the fastening band 1 cannot be tightly attached to the material 20 to be fastened.

Next, a method for attaching the fastening band 1 will be described.
In this embodiment, as shown in FIG. 3 and FIG. 4, the end of the shield member 31 made of a metal braided wire that covers the high-voltage cable 30 routed in the electric vehicle or hybrid vehicle is connected to the end of the high-voltage cable. The fastening band 1 is used to cover the outer surface of the metal connector shell 32 of the connector to be tightened and fasten and fix the shield member 31 to the outer peripheral surface of the connector shell 32. Since the outer shape of the connector shell 32 covering the flexible shield member 31 is rectangular, the material to be fastened 20 comprising the connector shell 32 and the shield member 31 fastened by the fastening band 1 is shown in FIG. The to-be-tightened material 20 whose outer shape shown is rectangular.

  As shown in FIG. 1A, the fastening band 1 has an outer peripheral surface of a shield member 31 that is to be fastened 20 with the first and second overlapping portions 5 and 6 open in a substantially heart shape as shown in FIG. Put on. On the outer surface of the short side portion 20c of the material to be fastened 20, the second overlapping portion 6 is overlapped on the inner periphery, the first overlapping portion 5 is overlapped on the outer periphery, and the crimp portion 3 is positioned on the outer surface of the opposing short side portion 20d, The state shown in FIG.

  Next, the first overlapping portion 5 is overlapped on the outer surface of the second overlapping portion 6 of the band body 2, the fastening band 1 is formed in a ring shape, and the locking claw 7 is inserted and locked into the locking hole 10 for the first coupling. The part A is temporarily connected, and the locking claw 8 is inserted and locked into the locking hole 9 to temporarily connect the second connecting part B. In the second coupling portion B, the locking claw 7 is located at a substantially central portion of the locking hole 9 made of a long hole, and can be moved to the side end. Further, the positioning projection 12 is loosely inserted into the positioning hole 11. The temporary coupling between the first and second coupling portions A and B is short in the dimension (L) between the first and second coupling portions A and B, and can be inserted and locked without strongly pulling the band body 2. The worker can perform the operation continuously with one hand.

  2A, the shield member 31 of the material to be tightened 20 is attached to the connector shell 32 with the tightening band 1, but the tightening force of the tightening band 1 is increased. In order to firmly fix the shield member 31 to the connector shell 32 so as not to move, the crimping portion 3 of the clamping band 1 is crimped using a crimping jig (not shown). By the caulking operation, the first and second overlapping portions 5 and 6 at both ends in the length direction of the band body 2 are pulled toward the caulking portion 3 at the center position in the length direction of the band body 2. Therefore, the locking claw 7 and the locking hole 10 and the locking claw 8 and the locking hole 9 that are locked at the first and second coupling portions A and B are indicated by arrows in FIG. As described above, both are pulled in opposite directions to increase the locking force. And since the band main body 2 is pulled from both sides in the direction in which the length contracts toward the crimping portion 3, the shield member 31 and the band main body 2 are brought into close contact with the rectangular outer surface of the connector shell 32. The tightening force of the side portions 2a and 2b can also be increased.

Thus, the present invention is wound around the band body 2 in the shielding member 31 covering the tightening band 1 made of metals to the connector shell 32, first, overlapping the second overlapping portions 5, 6 at the short side portion 2c At the same time, the locking claw is inserted and locked into the locking hole to be temporarily coupled, and then the crimping portion 3 is tightened to tighten the shield member 31 firmly to the connector shell 32 with the tightening band 1. It has a mounting structure. In particular, the first and second coupling portions A and B that are finally coupled by caulking are positioned on one short side portion 2c where the clamping force is easily applied, and the caulking portion 3 on the other short side portion 2d. Therefore, the tightening force can be efficiently applied to the short sides 2c and 2d on both sides. Further, since the overlapping portion of the first and second overlapping portions 5 and 6 is positioned on the short side portion 2c and not on the long side portions 2a and 2b, no step is generated on the long side portions 2a and 2b, Since the band main body 2 can be in close contact with the shield member 31 positioned on the long side portions 20a and 20b of the fastening material 20, and the band main body 2 is crimped and a tensile load is applied in this state, the long side portion 2a 2b can be brought into close contact with the shield member 31. As a result, it is possible to increase the tightening force of the long sides 2a and 2b where the tightening force tends to decrease.

  The operation of the tightening band 1 will be described more specifically. When tightening and fixing to the tightened material 20 having a rectangular cross section, the tightening band 1 has long side portions 2a and 2b and short side portions 2c and 2d. Tightened in shape. Then, the boundary portion between the long side portions 2a and 2b and the short side portions 2c and 2d of the band body 2 works as a fulcrum, and the tightening force is concentrated at this portion. Therefore, the band main body 2 becomes difficult to adhere to the outer peripheral surface of the material 20 to be fastened particularly at the long side portions 2a and 2b where the distance between the fulcrums is long, and the fastening force is reduced. Accordingly, the first and second overlapping portions 5 and 6 and the caulking portion 3 that cause a decrease in the tightening force due to the other factors described above are not arranged in the long side portions 2a and 2b, thereby the long side portions 2a and 2b. It is possible to prevent an excessive decrease in the tightening force.

  In this way, the tightening force can be increased on all sides of the short side portions 2c and 2d and the long side portions 2a and 2b of the tightening band 1, and the shield member 31 of the material to be tightened 20 is secured by the tightening band 1. Can be firmly tightened and fixed to the connector shell 32 having a rectangular cross section. Accordingly, it is possible to prevent the shield member 31 from being partially pulled out at the long side portion of the connector shell 32 and partially reducing the shield function.

  Moreover, since the length which overlaps the 1st, 2nd superposition | polymerization part 5 and 6 of the band main body 2 is made into the one short side part 2c, the whole length of the band main body 2 can be shortened, and it is material cost by that much. Can be reduced. And since the 1st, 2nd coupling | bond part A and B located in the overlapping part of the 1st, 2nd superposition | polymerization parts 5 and 6 approach, an operator can carry out 1st, 2nd latching | locking part A, B by one-hand operation. Can be performed continuously, the workability of attaching the fastening band 1 is improved, and the productivity can be improved.

  In the first embodiment, since the outer shape of the tightening material 20 of the tightening band 1 is rectangular, the tightening band 1 follows the outer shape of the tightening material 20 by caulking the caulking portion 3. As a result, the material is deformed from an elliptical cross-section to a rectangular shape, and the temporary joining portion is brought into a final joining state to fasten the material to be fastened 20.

FIG. 5 shows a reference second embodiment.
In the reference second embodiment, the fastening material 40 having an elliptical cross section is fastened by the fastening band 1. Specifically, the high-voltage cable 30 extends through the metal pipe 41 made of aluminum having an elliptical cross section in the underfloor wiring region of the high-voltage cable shown in FIG. and covered with one end of the shield member 31 made of the metal knitted sets line and using fastening band 1 to fasten the shield member 31 to the metal tube 41. Since the shield member 31 fastened to the metal tube 41 has an elliptical cross section, the fastening band 1 is also a ring having an elliptical cross section in the tightened state.
In addition, although the to-be-fastened material 40 in this reference embodiment is a linear part in a long side part and a short side part, and is not a perfect ellipse, in this invention, such a shape is also elliptical in cross section. It is included in the material to be tightened.

As shown in FIG. 5, the shape of the band main body 2 of the fastening band 1 is bent in advance to have an elliptical cross section, and one of the short sides 2c and 2d composed of a pair of arc sides opposed in the long axis direction. First and second overlapping portions 5 and 6 at both ends of the band body 1 are provided in the portion 2c.
The tightening band 1 is formed by superimposing the first and second overlapping portions 5 and 6 of the tightening band 1 on the outer surface of one short side portion 40c of the material to be fastened 40, and the first and second coupling portions A and B. Is located in the region of the short side portion 40c.
Since other configurations, tightening procedures, and operational effects are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

FIG. 6 shows a reference third embodiment.
In the reference third embodiment, a metal tube having an elliptical cross section shown in FIG. 6 is used as the metal tube 41. The first and second coupling portions A and B are joined by overlapping the first and second overlapping portions 5 and 6 of the fastening band 1 on one of the arc sides opposed in the major axis direction of the metal tube 41 having an elliptical cross section. Can be used.
In the case of an ellipse are all edges arc sides facing in the longitudinal direction and the short axis, can not be defined with certainty the boundary of the short side portion and a long side portion for the arc edge is continuous, this reference In the embodiment, an area of 25% or less with respect to the entire length is defined as the short side portion with the intersection with the long axis center line S1 as the center.

DESCRIPTION OF SYMBOLS 1 Fastening band 2 Band main body 2a, 2b Long side part 2c, 2d Short side part 3 Caulking part 5 1st superposition | polymerization part 6 2nd superposition | polymerization part 7, 8 Claw
9, 10 Locking hole A First coupling portion B Second coupling portion 20, 40 Fastened material 20a, 20b Long side portion 20c, 20d Short side portion 31 Shield member 32 Connector shell

Claims (2)

A connector shell whose cross section covering a connector connected to an end of a high voltage cable is a rectangle or an ellipse having a pair of long sides and a pair of short sides, and a shield member that covers the high voltage cable and the connector shell. As a material to be tightened , provided with a metal tightening band that covers the outer periphery of the connector shell and covers the shield member to fasten and fix to the connector shell ,
The fastening band is provided with a first polymerization portion and a second polymerization portion that overlap each other on the inner and outer circumferences at both longitudinal ends of the band-shaped band main body, and either the first polymerization portion or the second polymerization portion A locking claw is provided and a locking hole is provided on the other side, and a coupling part is formed by inserting and locking the locking claw into the locking hole.
A caulking portion that is caulked so as to reduce the diameter of the band main body in a state where the first overlapping portion and the second overlapping portion are locked by the coupling portion is provided,
An attachment structure for a fastening band , characterized in that the coupling portion is located on one of the short sides of the material to be fastened and the crimping portion is located on the other short side. Wherein by, respectively, in the first polymerization section and distal of the second polymerization section at intervals in the longitudinal direction is provided at least one by one locking pawl and the locking hole, and the first overlapping portion the second polymerization unit And at least two of the connecting portions in the overlapping portion with
2. The fastening band mounting structure according to claim 1 , wherein all of the at least two coupling portions are positioned on the one short side portion.

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