JP2017129254A - Binding tool, clip, and wiring harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small-diameter binding tool capable of easily bringing a wire bundle or the like into a bound state only by pushing in the wire bundle or the like, and to also provide a clip and a wiring harness capable of suppressing a mounting height.SOLUTION: The binding tool comprises: a first curved member 11 which is curved in a ring shape in a natural state and in which both ends 11a and 11b extend in a circumferential direction while being adjacent to each other; and a pair of second curved members 12 including a coupling part 12a at one end side coupled to the first curved member 11 at coupling positions P1 and P2, extending to the side of a central part 11c therefrom and including mutual hinge coupling parts 12b at the other end side. When the hinge coupling parts 12b are separated inside from the side of the central part 11c just for a predetermined separation distance, the pair of second curved members 12 expands the first curved member 11 closer to the central part 11c than the coupling positions P1 and P2 in an increase direction of a curvature radius and in a state where a flexure moment in an expansion direction is generated for the first curved member 11, the second curved member 12 is left in a constant attitude relatively to the first curved member 11.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a binding tool, a clip, and a wire harness, and more particularly to a binding tool that collects electric wires or the like in a free shape or an elastically deformed state in a free shape, and a clip and a wire harness including the binding tool.

  Traditionally, binding bands are often used for bundling wires such as electric wires.Bundling work with bundling bands is done by tightening the band through the band to the buckle part that has a built-in retaining mechanism. Since the part is cut, the binding work is not easy depending on the work environment, and the binding band cannot be reused when the binding is performed again.

  Therefore, conventionally, a clamp ring (see, for example, Patent Document 1) shown in FIG. 7A and a clip (see, for example, Patent Document 2) shown in FIG. 7B have been proposed.

  In the clamp ring of the first conventional example shown in FIG. 7A, the engagement element 2 and the engagement element 3 that is detachably opposed to each other are alternately arranged at both open ends of the surrounding band 1 that is curved in a ring shape. A plurality of sets are provided at the same time, and a plurality of engagement / disengagement guide members 4 protruding on the plurality of engagement elements 2 are provided so that the binding state can be released by a twisting operation of the engagement / disengagement guide members 4.

  In the clip of the second conventional example shown in FIG. 7B, a pair of clamping arms 5 and 6 that are opposed to each other at one end and hinged at the other end so as to form a pipe storage space, It is provided with a pedestal 7 that is hinged to each of the arms 5 and 6 and supports the holding arms 5 and 6 so as to be able to open and close at one end facing each other. The arms 5 and 6 are closed and locked together.

Japanese Patent Publication No. 01-026944 Japanese Patent Laid-Open No. 02-97703

  However, since the conventional binding tool and the wire harness including the same as described above have a lock mechanism that releasably locks the binding state, the wire bundle such as a wire harness that can be bound is bound. In addition to being limited to a narrow range of diameters, the lock mechanism protrudes in the radial direction, which causes a problem that the binding tool and the clip have a large diameter in the mounting height direction of the wire harness or the like.

  Such a problem has become prominent when a strong lock is not required, such as when a wire is temporarily bundled in a sub-assembled state.

  The present invention solves such a conventional problem, and an object of the present invention is to provide a small-diameter binding tool that can be easily brought into a binding state by simply pushing a wire bundle or the like, and also provides the binding tool. It aims at providing the clip and wire harness which can suppress mounting height by this.

  In order to achieve the above-mentioned object, the present invention is a binding tool capable of binding wires, and is in a closed state that is curved in the shape of a ring in a natural state and extends in the circumferential direction of the ring while both ends are adjacent to each other. A first bending member, and a coupling portion on one end side coupled to the first bending member at a coupling position at a predetermined distance from the both ends of the first bending member to the center portion side, and the natural state A pair of second bending members each having a hinge coupling portion that extends along the first bending member from the coupling portion on the one end side to the central portion side, and is coupled to the other end side so as to be rotatable. When the hinge coupling portion is separated from the central portion side of the first bending member by a predetermined distance from the inner side of the ring, the coupling portion on the one end side of the pair of second bending members is , The center from the coupling position The second bending member in a state in which the first bending member on the side is expanded in the increasing direction of the radius of curvature and a bending moment in the expanding direction is generated with respect to the first bending member in the vicinity of the coupling position. Is held in a fixed posture with respect to the first bending member.

  With this configuration, in the present invention, either the second bending member or the first bending member is operated, and the hinge coupling portion of the pair of second bending members is radially inward from the central portion side of the first bending member. When the first bending member is separated to the side by a predetermined separation distance, a force and a bending moment in the expanding direction are applied to the first bending member from the pair of second bending members, so that the first bending member is sufficiently expanded. Retained. Then, when the electric wire bundle or the like is pushed into the binding tool in the expanded state and the hinge coupling portion is pressed so as to approach the central portion side of the first bending member, the pair of second bending members to the first bending member. The force and bending moment applied in the expanding direction are removed, the first bending member returns to the natural state, and the second bending member moves from the coupling portion on one end side to the central portion side, respectively. And is in a closed state in which the wires are bound. The closed state at this time changes depending on the diameter of the wire or the wire bundle, and the bending in the expanding direction occurs in each of the first bending member and the pair of second bending members as the binding diameter increases. Therefore, it is possible to cope with a difference in the binding diameter within a predetermined range, and a necessary holding force according to the binding diameter is secured without providing a lock mechanism protruding in the radial direction, such as a bundle of wires. It becomes a small-diameter binding tool that can be easily brought into a binding state simply by pushing in

  The natural state here is an initial state where no external force is applied or a free state where the external force is removed. Further, the predetermined separation distance is a distance at which the hinge coupling portions of the pair of second bending members are separated from the central portion side of the first bending member with respect to a straight line connecting the coupling positions of the first bending member and the pair of second bending members. And can be set according to the bending moment.

  Further, the first bending member between the coupling positions may be arranged at a position different from the second bending member in the length direction of the wire, and the second bending member in the length direction of the wire. May be arranged in parallel on both sides. Alternatively, the first bending member between the coupling positions may be disposed at a position different from the second bending member in the natural state in the radial direction of the ring, or the same position in the radial direction of the ring. May be arranged. In either case, the first bending member and the second bending member can be connected to each other in the vicinity of the coupling position. Each of the first bending member and the second bending member can be formed as a band-shaped member having a rectangular cross section, for example.

  The clip according to the present invention includes a binding tool having the above-described configuration, and a locking fixing portion that is integrally connected to the first bending member and locked to a support, and the locking fixing portion is The said binding tool is fixed to the said support body when it latches to a support body.

  With this configuration, with the binding tool attached to the wire bundle, the wire bundle with the binding tool is fixed to the support side, or the wire bundle etc. is pushed into the binding tool previously fixed to the support side. It becomes a clip that can be fixed. In addition, since it is not necessary to provide a locking mechanism that protrudes in the radial direction, the mounting height of the wire bundle can be suppressed, and the binding state of the wire bundle etc. is in an appropriate tightening state and the mounting posture of the electric bundle etc. Accordingly, since the mounting posture and position of the locking and fixing portion can be easily changed, the clip has good workability.

  A wire harness according to the present invention includes the above-described binding tool or a clip including the binding tool, and an electric wire bundle bound by the binding tool in the closed state, and is excellent in assembly and wiring workability. It will be a thing.

  According to the present invention, it is possible to provide a small-diameter binding tool that can be easily brought into a binding state simply by pushing in an electric wire bundle or the like, and at the same time, a clip that can suppress the mounting height by providing the binding tool; A wire harness can be provided.

It is a front view which shows the closed state of the binding tool which concerns on the 1st Embodiment of this invention. It is an arrow view of the A direction of FIG. It is a front view which shows the expansion state of the binding tool which concerns on the 1st Embodiment of this invention. It is a front view which shows two closed states from which the binding diameter of the binding tool which concerns on the 1st Embodiment of this invention differs. It is a front view which shows the closed state of the binding tool which concerns on the 2nd Embodiment of this invention. It is a front view which shows the expansion state of the binding tool which concerns on the 2nd Embodiment of this invention. (A) is a figure which shows a 1st prior art example, (b) is a figure which shows a 2nd prior art example.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

(First embodiment)
1 to 4 show a main part of a binding tool and a wire harness including the binding tool according to the first embodiment of the present invention. The binding tool and the wire harness of the present embodiment hold the electric wire group of the wire harness mounted on the vehicle in a bound state by the binding tool at the specific binding position.

  First, the configuration of the present embodiment will be described.

  As shown in FIG. 1, the binding tool 10 of the present embodiment includes, for example, a first bending member 11 configured by an arc leaf spring (here, meaning a leaf spring having a substantially band shape and curved in an approximately arc shape). And a pair of second bending members 12 coupled to the first bending member 11, and the first bending member 11 and the pair of second bending members 12 are, for example, synthetic resins such as polypropylene and nylon. Alternatively, they are integrally formed of an elastomer resin.

  The first bending member 11 is in a natural state and is in a closed state in which the first bending member 11 is bent into a front shape of a ring (ring) surrounding the wire bundle W (a plurality of wire rods) of the wire harness. In the natural state, both end portions 11a and 11b of the first bending member 11 are adjacent to each other in the direction of the arrow D in FIG. 1, which is the radial direction of the ring, and are in the circumferential direction of the ring. It extends in the arrow C direction.

  As shown in FIGS. 1 and 2, the pair of second bending members 12 includes a coupling position P <b> 1 that is separated from both end portions 11 a and 11 b of the first bending member 11 by a predetermined distance from the longitudinal center portion 11 c side. In P2, it has the coupling | bond part 12a of each one end couple | bonded with the 1st bending member 11. As shown in FIG.

  Further, the pair of second bending members 12 extend along the first bending member 11 from the coupling portion 12a on one end side to the central portion 11c side of the first bending member 11 in the natural state described above. 1 so as to function as an arc leaf spring that can urge both end portions 11a and 11b of the first bending member 11 in the closing direction when receiving a downward force or an obliquely downward external force in FIG. (This point will be described later).

  In addition, the binding tool 10 is formed in advance in a shape different from the closed shape shown in FIG. 1 and then brazed so as to be in a natural state shown in FIG. The member 11 is formed in a shape close to the shape shown in FIG. 1 with a slight gap formed between both end portions 11a and 11b. 2, both end portions 11a and 11b of the first bending member 11 may be adjacent to and adjacent to each other in the axial direction perpendicular to the directions of arrows C and D in FIG. In this case, both end portions 11a and 11b of the first bending member 11 can take the same radial position in the arrow D direction.

  On the other hand, on each other end side of the pair of second bending members 12 close to the central portion 11c of the first bending member 11, there is a hinge coupling portion 12b that couples the pair of second bending members 12 to each other so as to be rotatable. Is provided.

  Further, as shown in FIG. 2, the first bending member 11 between the coupling positions P1 and P2 is second in the direction of the bidirectional arrow E in the figure, which is the length direction of the wire bundle W of the wire harness. The bending member 12 is disposed at a different position.

  Specifically, the first bending member 11 between the coupling positions P1 and P2 including the central portion 11c is a pair of central arc plates arranged parallel to each other on both sides of the second bending member 12 in the direction of arrow E. It is comprised by the spring parts 21 and 22. Further, the first bending member 11 on the both end portions 11a and 11b side from the coupling positions P1 and P2 includes the arc leaf spring portions 23 and 24 on both end sides corresponding to the both end portions 11a and 11b, and these arc leaf spring portions 23 and 24. Is composed of a coupling portion 12a on one end side of the pair of second bending members 12 and a pair of connecting portions 25 that are integrally connected to the arc leaf springs 21 and 22.

  The pair of second bending members 12 have plate widths (widths in the left-right direction in FIG. 2) closer to the arc leaf spring portions 23 and 24 on both ends than the arc leaf spring portions 21 and 22 on the center side. ing. In addition, each connecting portion 25 is provided with flexible coupling portions 25a and 25b that are coupled to the pair of end portions 21a and 22a of the arcuate leaf spring portions 21 and 22 on the center side. These flexure coupling portions 25a and 25b are thicker than the hinge coupling portions 12b of the pair of second bending members 12, and arc-shaped leaf spring portions 21 and 22 on the central side and arc-shaped leaf spring portions 23 and 24 on both ends. In the meantime, the bending rigidity is smaller than that of the other portions and bending is allowed, but it does not function as a hinge that can be bent freely, and can transmit a bending moment within a predetermined range.

  Further, the first bending member 11 between the coupling positions P1 and P2 is arranged at a position different from the second bending member 12 in the arrow D direction in FIG. 1 in the natural state. For example, the first bending member 11 is It is arranged so as to be located inside the ring shape formed in a natural state. However, the first bending member 11 may be disposed at the same position as the second bending member 12 in the arrow D direction in FIG. 1 in a natural state between the coupling positions P1 and P2. In either case, the first bending member 11 and the second bending member 12 are integrally connected to each other in the vicinity of the coupling positions P1 and P2.

  By the way, in the binding tool 10, the hinge coupling | bond part 12b of a pair of 2nd bending member 12 is shown in FIG. 1 by operating either site | part of a pair of 2nd bending member 12 or the 1st bending member 11. As shown in FIG. In addition, the first bending member 11 can be moved from the central portion 11c side to the upper side (ring-shaped inner side).

  As shown in FIG. 3, the hinge coupling portion 12 b is moved to the first bending member so that the moving distance of the hinge coupling portion 12 b from the central portion 11 c side to the upper side of the first bending member 11 reaches a predetermined separation distance H. 11 is separated from the central portion 11c side, the coupling portion 12a on one end side of the pair of second bending members 12 increases the radius of curvature R of the first bending member 11 on the central portion 11c side from the coupling positions P1 and P2. It is designed to expand in the direction. Further, in this expanded state, the coupling portion 12a on one end side of the pair of second bending members 12 has a force F and a bending moment M in the expanding direction with respect to the first bending member 11 in the vicinity of the coupling positions P1 and P2. In such a state that the same bending force is generated from the first bending member 11 side, the first bending member 11 is held in a fixed posture.

  Note that the predetermined separation distance H here is greater than a straight line L that connects the coupling positions P1 and P2 of the first bending member 11 and the pair of second bending members 12 with the hinge coupling portion 12b of the pair of second bending members 12. It is a distance away from the central portion 11c side of the first bending member 11 (which reaches the upper side of the straight line L in the figure), and is set according to the bending moment M.

  Next, the operation will be described.

  In the binding tool 10 of the present embodiment configured as described above, either one of the pair of second bending members 12 or the first bending member 11 is operated, and as shown in FIG. When the hinge coupling portion 12b of the bending member 12 is separated from the central portion 11c side of the first bending member 11 by a predetermined separation distance H from the radially inward side, the first bending from the pair of second bending members 12 as described above. When the force F and the bending moment M in the expansion direction act on the member 11, the first bending member 11 is sufficiently expanded and the state is maintained.

  When the wire bundle W of the wire harness is pushed into the binding device 10 in the expanded state of the binding device 10, the hinge coupling portion 12 b is pressed so as to approach the central portion 11 c side of the first bending member 11. Is done.

  At this time, the force F and the bending moment M in the expanding direction applied to the first bending member 11 from the pair of second bending members 12 are removed, and the first bending member 11 returns to the natural state. At the same time, the second bending member 12 is housed in a state extending along the first bending member 11 from the coupling portion 12a on one end side to the central portion 11c side of the first bending member 11, and the wire bundle W of the wire harness is bound. It will be in the closed state accommodated in the tool 10 and bound.

  The binding tool 10 in the closed state at this time, as shown by a solid line shape and a virtual line shape in FIG. 4, changes the binding diameter depending on the binding size of the wire bundle W of the wire harness, and as the binding diameter increases, Each of the first bending member 11 and the pair of second bending members 12 is in a state where bending in the expanding direction occurs.

  Therefore, it is possible to cope with a difference in the bundle diameter within a predetermined range of the wire bundle W of the wire harness, and a required holding force corresponding to the bundle diameter is ensured without providing a lock mechanism protruding in the radial direction. It will be. As a result, the small-diameter binding tool 10 that can be easily bundled by simply pushing the wire bundle W of the wire harness.

  In the present embodiment, the first bending member 11 between the coupling positions P1 and P2 is disposed at a position different from the second bending member 12 in the length direction of the wire bundle W of the wire harness. 2 The bending member 12 can be arrange | positioned in the position near the radial direction position of the 1st bending member 11 of a closed state, and the outer diameter of the binding tool 10 in a closed state can be suppressed.

  Thus, in this embodiment, the small diameter binding tool which can be easily made into a binding state only by pushing in the wire bundle W of a wire harness can be provided, and the wire harness excellent in assemblability can be provided.

(Second Embodiment)
FIG. 5 and FIG. 6 show a main part of a clip including a binding tool according to a second embodiment of the present invention and a wire harness including the clip.

  In addition, the binding tool of the present embodiment holds the wire group of the wire harness mounted on the vehicle in a binding state at the specific binding position, and locks and fixes it to the opening edge of the panel hole on the vehicle body side It is.

  The clip 50 according to the present embodiment is integrated with the binding tool 30 that can be in a closed state and an expanded state, and the first bending member 31 of the binding tool 30 as in the binding tool 10 of the first embodiment. And a locking fixing portion 40 that is connected to the inner peripheral edge 62 of the opening of the panel hole 61 on the vehicle body side that is a support.

  As shown in FIG. 5, the binding tool 30 of the present embodiment includes, for example, a first bending member 31 composed of a single arc leaf spring having a substantially equal width over the entire length, and a first bending member 31 in a closed state. A pair of second bending members 32 coupled to the inner peripheral surface side.

  In addition, the pair of second bending members 32 have coupling portions 32a on one end side coupled to the first bending member 11 at the coupling positions P1 and P2, and from the coupling portion 32a on the one end side in a natural state. Arc springs that extend along the first bending member 31 toward the central portion 31 c of the first bending member 11 are provided.

  On the other hand, on each other end side of the pair of second bending members 32 close to the central portion 31c of the first bending member 31, there is a hinge coupling portion 32b that couples the pair of second bending members 32 to each other in a rotatable manner. Is provided.

  Further, the first bending member 31 between the coupling positions P1 and P2 is disposed in the same width region as the second bending member 12 in the length direction of the wire bundle W of the wire harness and at a different position in the radial direction. Has been.

  In this binding tool 30, the hinge coupling part 32b of a pair of 2nd bending member 32 is shown in FIG. 6 by operating either site | part of a pair of 2nd bending member 32 or the 1st bending member 31. The first bending member 31 can be moved to the inner side of the ring shape.

  Then, as shown in FIG. 6, the hinge coupling portion 32 b is moved to the first bending member so that the moving distance of the hinge coupling portion 32 b from the central portion 31 c side to the upper side of the first bending member 31 reaches a predetermined separation distance H. When the coupling portion 32a on one end side of the pair of second bending members 32 is moved away from the central portion 31c side of the 31, the first bending member 31 is increased in the radius of curvature in the central portion 31c side from the coupling positions P1 and P2. It is designed to be expanded.

  Further, the joint portion 32a on one end side of the pair of second bending members 12 is provided with an expanding direction pressing portion 32c projecting toward both end portions 31a and 31b of the first bending member 31, and the above-described expanding operation is performed. In the state, the coupling portion 12a on one end side of the pair of second bending members 12 drives the expansion direction pressing portion 32c in the expansion direction, and expands with respect to the first bending member 31 in the vicinity of the coupling positions P1 and P2. The first bending member 31 is held in a fixed posture in a state in which a directional bending moment is generated.

  Therefore, also in the binding tool 30 of this embodiment, the binding function similar to the binding tool 10 in 1st Embodiment can be exhibited, and the same effect can be acquired.

  On the other hand, the locking fixing portion 40 in the clip 50 of the present embodiment has, for example, a clip head portion 42 having a plurality of locking claws 41, or has any of various forms of conventional panel fixing methods. The wire bundle W of the wire harness can be fixed to the vehicle body side panel 60 at the binding position by the binding tool 30 by being locked to the inner peripheral edge 62 of the opening of the vehicle body side panel hole 61. It has become.

  The clip 50 of the present embodiment configured as described above is configured to fix the wire bundle W with the binding tool 30 to the vehicle body side panel 60 with the binding tool 30 attached to the wire bundle W of the wire harness, For example, the wire bundle W of the wire harness can be pushed into and fixed to the expanded binding tool 30 that is fixed in advance to the vehicle body side panel 60 by the locking fixing portion 40.

  Further, since it is not necessary to provide a lock mechanism that protrudes in the radial direction, the mounting height of the wire bundle W of the wire harness can be suppressed, and the wire bundle W bundle state of the wire harness is in an appropriate tightening state and the wire. The mounting posture and position of the locking and fixing portion 40 can be easily changed according to the mounting posture of the harness. Therefore, the workability of wire harness assembly and wiring work can be improved by the clip 50 with good bundling workability.

  In the above-described second embodiment, the first bending member 31 is configured by a single arc leaf spring, and the locking and fixing portion 40 is integrally coupled to the central portion 31c. A connecting frame portion is mounted so as to form a connecting hole penetrating in the electric wire direction below the bending member 31, so that a plurality of binding tools 30 are connected to each other and connected to the locking and fixing portion 40. Something can be considered. Moreover, although the 1st bending members 11 and 31 and the 2nd bending members 12 and 32 of the latching tools 10 and 30 were each made into strip | belt plate shape, the cross section is typically a rectangle. However, the concave sections of the first bending members 11 and 31 and the second bending members 12 and 32 may be other polygonal shapes, or may be substantially semicircular or elliptical.

  As described above, the present invention can provide a small-diameter binding tool that can be easily brought into a binding state simply by pushing a wire bundle or the like, and a clip that can suppress the mounting height using the binding tool. It can be provided, and is useful for a binding tool that collects electric wires or the like in a free shape or in an elastically deformed state close to that and a clip provided with the binding tool.

10, 30 Bundling tool 11, 31 First bending member 11a, 11b, 31a, 31b Both ends 11c, 31c Central portion 12, 32 Second bending member 12a, 32a Coupling portion 12b, 32b Hinge coupling portion 21, 22 Leaf spring portion 21a, 22a End portion 23, 24 Leaf spring portion 25 Connecting portion 25a, 25b Flexible coupling portion 32c Expanding direction pressing portion 40 Locking fixing portion 41 Locking claw 42 Clip head portion 50 Clip 60 Panel 61 Panel hole 62 Opening inner periphery Part P1, P2 Coupling position W Wire bundle of wire harness (main part of wire harness)

Claims (4)

A binding tool capable of binding wires,
A first bending member which is in a closed state extending in the circumferential direction of the ring while being curved in the shape of the ring in a natural state and having both end portions adjacent to each other;
The first bending member has a coupling portion on one end side coupled to the first bending member at a coupling position at a predetermined distance from the both end portions to the center portion side of the first bending member. A pair of second bending members each having a hinge coupling portion extending from the coupling portion to the central portion side along the first bending member and rotatably coupled to each other side;
When the hinge coupling portion is separated from the central portion side of the first bending member toward the inner side of the ring by a predetermined separation distance, the coupling portion on the one end side of the pair of second bending members is In a state where the first bending member closer to the central portion than the position is expanded in the direction of increasing the radius of curvature, and a bending moment in the expanding direction is generated in the first bending member in the vicinity of the coupling position, The binding tool, wherein the second bending member is held in a fixed posture with respect to the first bending member. A binding tool according to claim 1;
A locking fixing portion integrally connected to the first bending member and locked to the support,
The clip, wherein the binding tool is fixed to the support when the locking and fixing portion is locked to the support.   The wire harness provided with the binding tool of Claim 1, and the electric wire bundle bound by the said binding tool of the said closed state.   A wire harness comprising the clip according to claim 2 and an electric wire bundle bound by the binding tool in the closed state.

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