JP2016111815A - Protector for branch connection - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a protector for branch connection in novel structure which can be assembled with many kinds of branch connections with different diameter dimensions in a trunk line or a branch line and by which thermal countermeasures can be taken or which can be attached compactly by reducing a gap that is formed between the trunk line or the branch line and the protector.SOLUTION: The protector for branch connection comprises a first/second clip 20/22 which is mounted to a branch line 12b; and a protective plate 24 that is formed separately from the first/second clip 20/22. The protective plate 24 includes: a main body part 34 that is freely curved; a first engaging part 36 that is provided at one end of the main body part 34; and a second engaging part 38 that is provided at another end of the main body part 34. The first engaging part 36 of the protective plate 24 is engaged to the first clip 20. On the other hand, the main body part 34 of the protective plate 24 is curved along an outer peripheral surface of a trunk line 12a, the main body part 34 is sneaked to a side of the second clip 22, and the second engaging part 38 is engaged to the second clip 22 for the assembling the protector.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a protective device for a wire harness, and particularly to a protective device for a branch part that is used by being attached to a branch part where a branch line branches from a trunk line of the wire harness.

  2. Description of the Related Art Conventionally, wire harnesses used in automobiles are provided with branching portions where branch lines are branched at a plurality of locations on a trunk line extending from a battery for the purpose of supplying power from a battery to a large number of in-vehicle devices. Yes.

  By the way, in such a wire harness, a cylindrical corrugated tube is extrapolated to prevent interference with other members of the wire harness and to protect from the external environment. However, at the branch portion of the wire harness, since the branch line branches off from the trunk line in a T shape, it is proposed that the cylindrical corrugated tube cannot be extrapolated and protected by a special protector.

  For example, in Japanese Patent Application Laid-Open No. 2013-225981 (Patent Document 1), a half part of a cylindrical part that covers a trunk line and a cylindrical part that covers a branch line is integrated into a T shape from the upper and lower sides of the branch part. Synthetic protective equipment made of synthetic resin that covers the bifurcated portions by connecting them together has been proposed.

  However, in such a protector, since the diameter of the cylindrical part covering the trunk line and the branch line is fixed, it is necessary to prepare a plurality of kinds of protectors according to the shape of each branch part, and the versatility is poor. There was a problem. Thus, for example, a method of protecting the branch portion regardless of the diameter of the main line or branch line by overlapping a pair of synthetic resin plate members from the upper and lower sides of the branch portion and fixing with a vinyl tape or the like has also been proposed. .

  If it is such a method, many kinds of branch parts from which the diameter dimension of a trunk line or a branch line differs can be covered and protected by a pair of board member. However, when the diameter of the branch line is smaller than the main line, it is inevitable that the plate member is inclined and fixed with respect to the main line or the branch line. As a result, a pair of plate members may protrude and an arrangement clearance with other members required may not be secured, or in some cases, there is a risk of causing interference with other members.

  In addition, when the trunk line and the branch line are sandwiched between the pair of plate members, a gap is generated between the trunk line or the branch line and the plate member at a portion other than the contact portion of the plate member with the trunk line or the branch line. Therefore, when such a branch portion is exposed to a thermal atmosphere such as in the vicinity of the engine, there is a possibility that the heat countermeasures at the branch portion of the wire harness may be insufficient.

JP 2013-225981 A

  The present invention has been made in the background of the above-described circumstances, and the problem to be solved is that the main line or branch line can be assembled to many kinds of branch portions having different diameter dimensions of the main line or branch line. It is an object of the present invention to provide a protective device for a branching part having a novel structure, which can reduce a gap formed between the two and reduce heat and enable compact mounting.

  A first aspect of the present invention is a protective device for a branch portion attached to a branch portion where a branch line branches from a trunk line of a wire harness, the first clip and the second clip individually attached to the branch line, A protective plate that covers the branch portion, and is formed separately from the first and second clips, the protective plate being able to bend along the outer peripheral surface of the trunk line, and a bending direction of the main body portion; A first engagement portion that is provided at one end portion and engages with the first clip, and a second engagement that is provided at the other end portion in the bending direction of the main body portion and engages with the second clip. The first clip is engaged with the first engagement portion of the protection plate, while the main body portion of the protection plate is bent along the outer peripheral surface of the trunk line. The first clip of the branch line; The so Wrapping body portion to said second clip side to project to the opposite side, characterized in that as assembled by engaging the second engagement portion to the second clip.

  According to this aspect, the protective device for the branch part includes the first and second clips that are individually attached to the branch lines, and the protective plate that is formed separately from the clips and covers the branch part. A main body portion that can be bent along the outer peripheral surface of the trunk line and first / second engagement portions that are respectively engaged with the first / second clips are provided at both ends in the bending direction. Therefore, the difference in the diameter of the main line can be appropriately absorbed by changing the positions of the first and second clips attached to the branch line, and can be attached to various kinds of branch portions.

  In addition, since the main body portion of the protective plate covering the branch portion can be assembled along the outer peripheral surface of the main line, the main body portion is attached to the outer periphery of the main line after the first engaging portion is engaged with the first clip. By curving along the surface and wrapping around the second clip, and engaging the second engagement portion with the second clip that has been properly positioned, the gap between the main line or branch line and the protective plate is minimized. The protective device for the branch part can be compactly attached to the branch part by reducing the size. Therefore, even if the diameter of the branch line is small with respect to the main line, it is possible to prevent problems such as the protective plate projecting from the branching portion and not being able to secure an arrangement gap with other members or interfering with other members. It can be done. And it can prevent advantageously that the branch part of a wire harness is exposed to a thermal atmosphere by making a clearance gap as small as possible.

  The main body of the protective plate can adopt any shape as long as it can be bent along the outer peripheral surface of the trunk line. For example, a plurality of band-shaped members arranged in the width direction and hinged to each other to be bent, or a concave groove extending in the width direction is connected to a flat plate made of synthetic resin in the longitudinal direction at a minute pitch. The thing etc. which can be bent freely by providing may be employ | adopted.

  According to a second aspect of the present invention, in the first aspect, the first and second engaging portions include insertion holes into which the first and second clips are inserted and fitted, respectively. And at least one of the first and second engaging portions is provided with a plurality of insertion holes at positions spaced from each other in the bending direction.

  According to this aspect, the first and second clips and the protective plate can be easily and reliably connected by inserting and fitting the first and second clips into the insertion holes of the first and second engaging portions. Can do. In addition, since at least one of the first and second engaging portions is provided with a plurality of insertion holes spaced apart from each other in the bending direction, the fixing position of the first clip or the second clip to the branch line can be determined. By changing the position of the insertion hole through which the first and / or second clip is inserted without intentionally changing, the difference in the diameter of the trunk line can be absorbed more easily.

  According to a third aspect of the present invention, in the first or second aspect, the main body is configured by a plurality of band-shaped members arranged in the width direction and hinged to each other. A plurality of belt-like members are hinged to the other belt-like members adjacent to each other at the lower end side in the plate thickness direction of each of the belt-like members, and the lower end side of each of the belt-like members is arranged on the main line side. It is what.

  According to this aspect, the band-shaped members arranged in the width direction constituting the main body portion and hinged are hinge-connected to the other band-shaped members adjacent on the lower end side in the plate thickness direction, and the lower end side is It is arranged on the main line side. Therefore, the widening angle between the belt-like members is wide, the followability to the outer peripheral surface of the trunk line of any diameter can be obtained satisfactorily, and the generation of gaps can be suppressed more advantageously.

  According to a fourth aspect of the present invention, in the one described in the first or second aspect, the main body portion has a concave groove extending in the width direction in the longitudinal direction at a minute pitch with respect to the synthetic resin flat plate. By connecting them, they can be bent freely.

  According to this aspect, the main body part of the protective plate that can be bent relatively steplessly can be configured, and the followability of the main body part of the protective plate to the outer peripheral surface of the main line can be further improved.

  According to the present invention, the protective device for the branch part includes the first / second clip that is individually attached to the branch line, and the protection plate that covers the branch part by separate formation, and the protection plate can be bent freely. And first / second engaging portions engaged with the first / second clips at both ends thereof. Therefore, the difference in the diameter of the main line can be appropriately absorbed by changing the mounting positions of the first and second clips, and the first and second clips can be attached to various kinds of branch portions. In addition, after engaging the first engagement portion with the first clip, the main body portion is bent along the outer peripheral surface of the main line, and the second engagement portion is engaged with the second clip whose position is appropriately adjusted. Therefore, the gap between the trunk line or branch line and the protective plate can be made as small as possible, and the protective device for the branch portion can be compactly attached to the branch portion. Therefore, it is possible to prevent the occurrence of problems such as the protective plate protruding from the branching portion and the arrangement gap with the other member cannot be ensured or the interference with the other member. And it can prevent advantageously that the branch part of a wire harness is exposed to a thermal atmosphere by making a clearance gap as small as possible.

The perspective view for demonstrating a mode that the protector for branch parts as 1st embodiment of this invention is attached with respect to the branch part of a wire harness (A) The state which attached the 1st / 2nd clip to the branch line (B) Further, a protection plate is attached to the branch portion). The front view of FIG.1 (b). The expanded view of the protection plate shown in FIG. It is a front view which shows the protector for branch parts as 2nd embodiment of this invention, Comprising: The figure corresponded in FIG.

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

  First, the protective device 10 for branch parts as 1st embodiment of this invention is shown in FIGS. 1-3. The protective device 10 for a branch part is attached to the branch part 14 where the branch line 12b branches from the trunk line 12a of the wire harness 12 (see FIG. 1). That is, in the branch part 14, as shown in FIG. 1A, since the branch line 12b branches from the trunk line 12a in a T shape, a cylinder that protects the wire bundles 16a and 16b of the trunk line 12a and the branch line 12b. The corrugated tubes 18a and 18b cannot be extrapolated, and the branch protection device 10 is required as a new protection device. The protective device 10 for the branch part is a protective plate that is formed separately from the first clip 20 and the second clip 22 and the first and second clips 20 and 22 that are individually attached to the branch line 12 b and covers the branch part 14. 24. The first / second clips 20 and 22 and the protective plate 24 are integrally formed by injection molding or the like with a synthetic resin such as polypropylene (PP) or polyamide (PA). In the following description, “upper” means the upper side in FIG. 2, and “lower” means the lower side in FIG.

  Each of the first clip 20 and the second clip 22 is a known wire harness clamp, and includes a base portion (not shown) on which a clip portion 26 is projected, and a wire extending from one end portion of the base portion in a band shape. And a binding band 28 wound around the branch line 12b of the harness 12. The clip portion 26 has a mushroom shape, and includes a conical tip portion and a cylindrical base end portion having a smaller diameter than the tip portion. Both the first clip 20 and the second clip 22 can be fixed to the wire harness 12 by fastening the binding band 28 to the wire harness 12.

  As shown in FIG. 3, the protection plate 24 includes a main body 34 that is substantially horizontally long in a plan view, and a central portion in the width direction at both ends of the main body 34 in the longitudinal direction (left and right in FIG. 3). The first and second engaging portions 36 and 38 having a substantially band shape extending outward from the outer periphery. As shown in FIGS. 1B and 2, the main body portion 34 is configured by a large number of vertically long belt-like members 40 arranged in the width direction and hinged to each other. More specifically, in the main body 34, the adjacent belt-like members 40 are hinged on the lower end side in the plate thickness direction, while the lower end side in the plate thickness direction of the belt-like member 40 is on the main line 12a side as will be described later. It is arranged. Therefore, the widening angle between the belt-like members 40 is wide, the followability to the outer peripheral surface of the main line 12a of any diameter can be obtained satisfactorily, and a gap between the main body part 34 and the outer peripheral surface of the main line 12a is generated. It can be suppressed more advantageously. As described above, the main body 34 is freely bendable along the outer peripheral surface of the trunk line 12a, and the bending direction means the longitudinal direction (left-right direction in FIG. 3).

  An insertion hole 42 into which the first clip 20 is inserted and fitted is formed in the first engagement portion 36 provided at one end of the main body portion 34 in the bending direction. More specifically, as shown in FIG. 3, the first engagement portion 36 is provided with one insertion hole 42 having a substantially circular cross-sectional shape in a substantially central portion in plan view. On the other hand, an insertion hole 44 into which the second clip 22 is inserted and fitted is formed in the second engagement portion 38 provided at the other end portion in the bending direction of the main body portion 34. More specifically, as shown in FIG. 3, the second engagement portion 38 that is laterally longer than the first engagement portion 36 is mutually connected in the curved direction at a substantially central portion in the width direction in plan view. Five insertion holes 44 having a substantially circular cross-sectional shape are provided at positions spaced apart from each other. The five insertion holes 44 are communicated with adjacent insertion holes 44 and a connection hole 46 having a substantially rectangular shape that is narrower than the diameter of the insertion hole 44 in a plan view that opens in the plate thickness direction.

  As shown in FIGS. 1 and 2, the branch protector 10 having the structure as described above is assembled to the branch 14 of the wire harness 12. More specifically, first, as shown in FIG. 1A, the first clip 20 is wound around a portion of the wire harness 12 that is close to the branch portion 14 of the branch line 12 b, and the clip of the first clip 20. The part 26 is fixed so as to protrude downward. Then, the 2nd clip 22 is wound around the site | part spaced apart from the branch part 14 of the branch line 12b of the wire harness 12, and it fixes so that the clip part 26 of the 2nd clip 22 may protrude upwards.

  Next, by inserting the clip portion 26 of the first clip 20 into the insertion hole 42 provided in the first engagement portion 36 of the protection plate 24, the first engagement portion 36 of the protection plate 24 is moved to the first clip. 20 is engaged. At this time, the protective plate 24 is disposed so that the hinged side of the belt-like member 40 of the main body 34 is on the upper side. Subsequently, the main body portion 34 of the protection plate 24 is curved along the outer peripheral surface of the trunk line 12a, so that the clip portion 26 of the second clip 22 protrudes on the side opposite to the clip portion 26 of the first clip 20. The main body 34 can be turned around. Then, in any one of the five insertion holes 44 provided in the second engagement portion 38 of the protection plate 24 (the insertion hole 44 located second from the front end side in the extending direction in FIG. 1B), By inserting the clip portion 26 of the two clip 22, the second engagement portion 38 of the protection plate 24 is engaged with the second clip 22. As a result, the protective device 10 for the branching portion is assembled to the branching portion 14 of the wire harness 12.

  According to the protective device 10 for a branching portion configured as described above, various trunk wires having different diameters can be obtained by appropriately changing the positions of the clip portions 26 of the first and second clips 20 and 22 attached to the branch line 12b. Appropriate mounting is possible without causing problems such as a lack of extra length or length relative to 12a, and the difference in diameter of the trunk line 12a can be absorbed. Therefore, it becomes possible to attach the protective device 10 for branching parts to various kinds of branching parts 14. Moreover, since the main body 34 of the protection plate 24 can be bent and assembled along the outer peripheral surface of the trunk line 12 a, the branch protection device 10 is attached to the branch section 14 with respect to the trunk 12 a and branch lines 12 b and the protection plate 24. The space between the two can be made as compact as possible. Therefore, when the diameter of the branch line 12b is small with respect to the main line 12a, a problem that the plate member protrudes as in the prior art cannot provide a required clearance with the other member or interferes with the other member. Can be prevented in advance. Moreover, it can prevent advantageously that the branch part 14 of the wire harness 12 is exposed to a thermal atmosphere by making a clearance gap as small as possible.

  In addition, by inserting and fitting the clip portions 26 of the first / second clips 20, 22 into the insertion holes 42, 44 of the first / second engagement portions 36, 38, the branch protection device 10 can be It can be assembled to the branching portion 14 of the harness 12. Therefore, the reliable connection between the first / second clips 20 and 22 and the protection plate 24 can be easily performed. In addition, five insertion holes 44 are provided in the second engagement portion 38 at positions separated from each other in the bending direction. Therefore, the main line can be more easily changed by changing the position of the insertion hole 44 through which the clip portion 26 of the second clip 20 is inserted without changing the fixing position of the first / second clips 20 and 22 to the branch line 12b. The difference in diameter of 12a can be absorbed. In the present embodiment, since the adjacent insertion holes 44 are communicated with each other by the connection hole 46, the second clip 22 can be removed from the insertion hole 44 by pulling the second engagement portion 38 with force. The insertion hole 44 to be fitted can be changed.

  Next, with reference to FIG. 4, the bifurcation protector 48 according to the second embodiment of the present invention will be described in detail. The members and parts having the same structure as the above embodiment are shown in the figure. The same reference numerals as those in the above embodiment are attached, and detailed description thereof is omitted. In other words, the branch portion protector 48 can be bent by providing the main body portion 50 with the concave grooves 54 extending in the width direction on the synthetic resin flat plate 52 connected in the longitudinal direction at a minute pitch. In this regard, an embodiment different from the above embodiment is shown. According to the protector 48 for a branching portion of the present embodiment, the main body portion 50 of the protective plate 56 that can be bent in a relatively stepless manner can be configured, so that the outer surface of the trunk line 12a of the main body portion 50 of the protective plate 56 can be formed. Can be obtained more satisfactorily.

  As mentioned above, although embodiment of this invention has been described, this invention is not limited at all by the specific description in this embodiment. For example, in the present embodiment, the plurality of insertion holes 44 are provided in the second engagement portion 38, but the plurality of insertion holes 42 may be provided in the first engagement portion 36. A plurality of insertion holes 42 and 44 may be provided through both of the 1 / second engaging portions 36 and 38. In addition, about the number of these insertion holes 42 and 44, arrangement | positioning position, a shape, etc., it can set arbitrarily. In the first and second embodiments, the shapes of the main body portions 34 and 50 of the protective plates 24 and 56 are exemplified. However, any shape can be adopted as long as it can be bent along the outer peripheral surface of the trunk line 12a. Is possible.

DESCRIPTION OF SYMBOLS 10,48: Protection equipment for branch parts, 12: Wire harness, 12a: Trunk line, 12b: Branch line, 14: Branch part, 20: 1st clip, 22: 2nd clip, 24, 56: Protection plate, 34, 50 : Body part, 36: first engaging part, 38: second engaging part, 40: belt-like member, 42: insertion hole, 44: insertion hole, 52: flat plate, 54: concave groove

Claims (4)

A protective device for a branch part attached to a branch part where a branch line branches from a trunk line of a wire harness,
A first clip and a second clip individually attached to the branch line;
The first and second clips are formed separately from each other, and includes a protective plate that covers the branch portion,
A body part that can be bent along the outer peripheral surface of the main line, and a first engagement part that is provided at one end of the body part in the bending direction and engages with the first clip; A second engaging portion that is provided at the other end of the main body in the bending direction and engages with the second clip;
While engaging the first engagement portion of the protection plate with the first clip, the main portion of the protection plate is curved along the outer peripheral surface of the trunk line, and the first clip of the branch line is The main body part is wound around the second clip projecting on the opposite side, and the second engaging part is engaged with the second clip for assembly. .   The first and second engaging portions include insertion holes into which the first and second clips are inserted and fitted, respectively, and at least one of the first and second engaging portions has the insertion hole. The protective device for a branch part according to claim 1, wherein a plurality of are provided at positions separated from each other in the bending direction.   The main body portion is configured by a plurality of band-shaped members arranged in the width direction and hinged to each other, and the plurality of band-shaped members are adjacent to each other on the lower end side in the plate thickness direction of the band-shaped members. The protective device for a branch part according to claim 1 or 2, wherein the lower end side of each of the band-shaped members is disposed on the main line side by being hinged to the band-shaped member.   The branch part protection according to claim 1 or 2, wherein the main body part is bent freely by connecting concave grooves extending in the width direction in the longitudinal direction at a minute pitch with respect to a flat plate made of synthetic resin. Ingredients.