JP2009303467A - Exterior-protective tubing of wiring harness for motorcycles - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a protective tube to avoid twisted wiring of a main wire harness in a motorcycle. <P>SOLUTION: A cylindrical tube comprising a resinous molded object is mounted as the protective tube in the main wire harness wired in the motorcycle. The main wire harness has branched lines distributed from trunk-line terminals and connected to meters and switches mounted on the upper end of a steering shaft, and to the switches mounted on the right and left portions of a handle. The protective tube externally mounted on the trunk line of the main wire harness has a linear marked line parallel to the center shaft line of a tube main body integrally with the tube main body on the outer peripheral surface of the cylindrical tube main body. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an exterior protection tube for a motorcycle wire harness, and more particularly to a protection tube that is exteriorly attached to a main wire harness routed on a motorcycle.

  Conventionally, an adhesive tape is wound around a wire harness, which is a converging body of an electric wire group to be routed in a vehicle, for the purpose of binding and protecting the electric wire group, and the adhesive tape is an exterior protective material for the wire harness. .

  In order to prevent this kind of tape-wrapped wire harness from being routed in a twisted state in the vehicle, the applicant of the present application disclosed in Japanese Patent Laid-Open No. 9-213141 (Patent Document 1) as shown in FIG. A linear marker line L colored with a color different from that of the tape T is formed on the outer peripheral surface of the tape T wound around the outer periphery of the wire group W by half wrap winding or the like. It is formed by applying a tape.

In Patent Document 1, when the wiring harness is routed to an automobile, when the wiring location is in a dark position, a mark line is provided that is colored so that it is difficult to distinguish the twist of the wire harness. Yes. A floor harness or the like that is routed along the vehicle body length direction in the vehicle is routed in a relatively straight line, and no torsion or movement load acts.
However, the main wire harness routed along the motorcycle body length direction is bent and routed at a number of locations, and a torsional load is applied from the branch line wired on the handle side.

  That is, as shown in FIGS. 7 and 8, the main wire harness routed on the motorcycle is connected to the distribution box 2 housed in the vehicle body below the seat 1, and the main wire harness 3 The main line 4 is routed to the front frame 5 through the floor F, and is erected upward inside the front frame 5. Inside the front frame 5, the front end of the trunk line 4 is locked to the vehicle body by a clip 12 and branched to branch lines 6 and 7, and connected to meters 9 and various operation switches 10 provided on the upper surface of the steering shaft 8. The left and right handles 11A and 11B are wired and connected to various switches 12 attached to the handles 11A and 11B.

  As described above, the main line 4 of the main wire harness routed on the motorcycle is bent and wired at a number of locations, so that it is easily wired in a twisted state. If it is wired in a twisted state, it will easily interfere with other parts and the wiring workability will deteriorate, and the length of the trunk line will be shortened due to twisting. If the twist is severe, the clip attached to the trunk line will be There arises a problem that it cannot be attached to the blind hole.

  In particular, when the trunk line 4 itself of the main wire harness 3 of the motorcycle is twisted and wired, the branch lines 6 and 7 branched from the trunk line 4 are also twisted and wired. Therefore, when these branch lines 6 and 7 are twisted, the direction of the connector connected to the terminal is changed. When connecting to the connectors of a large number of meters and switches, it is necessary to further twist and connect the connectors to each other, and a torsional load is always applied to the branches, and disconnection is likely to occur. Further, as in the case of the trunk line, the twisted branch line is likely to interfere with other parts, and the length of the electric wire is shortened so that the connector cannot be fitted.

  Further, since the branch lines 6 and 7 wired to the handle move following the steering operation during traveling, a torsional load acts on the branch portion of the main line 4 of the main wire harness fixed to the front frame. . Therefore, if the trunk line 4 itself is twisted and wired, the twist is promoted by the twist repeatedly applied during traveling, and there is a problem that the bending durability of the trunk line 4 is lowered.

  Since the wire harness to be routed to the above-mentioned motorcycle is more likely to be splashed compared to the wire harness to be routed to the vehicle, instead of the tape winding shown in FIG. Resin tubes are often used. Further, as in Patent Document 1, when a linear mark line is formed with a marker pen or paint, there is a problem that it is easy to disappear when water is applied, and it is easy to peel off when a colored tape is applied. The mark display of 1 cannot be used. And the operation | work which attaches a mark line after winding a tape around a wire harness like patent document 1 also has a problem which requires work work.

Japanese Patent Laid-Open No. 9-213141

  An object of the present invention is to prevent the main wire harness routed on the motorcycle from being twisted.

In order to solve the above-mentioned problem, the present invention has a main wire harness that is routed on a motorcycle, and a resin-made cylindrical tube is sheathed as a protective tube,
The main wire harness is connected to meters and switches mounted on the steering shaft and the left and right handles, branch lines branched from the main line terminal,
The protective tube to be sheathed on at least the trunk line of the main wire harness has a linear mark line parallel to the central axis of the tube main body formed integrally with the tube main body on the outer peripheral surface of the cylindrical tube main body. The exterior protection tube of the wire harness for motorbikes characterized by these is provided.

As described above, the main wire harness routed on the motorcycle is raised from the floor side at the front frame of the vehicle body surrounding the steering shaft in front of the seat, wired upward inside the front frame, and the branch line from the trunk line at the upper end. The branch line is connected to a number of meters and switches having a steering shaft attached to the upper end thereof, and is connected to switches to be attached to the steering wheel.
As described above, the trunk line of the main wire harness has many bent portions and is likely to be twisted. Therefore, a protective tube provided with a linear mark line is externally provided. If the trunk line is twisted and routed by the mark line, the mark line is twisted, so that it can be seen that it is twisted at a glance and can be routed while correcting the twist. Thus, by wiring the trunk line so as not to be twisted, interference with other parts can be prevented, and the clip attached to the trunk line can be reliably locked in the locking hole on the vehicle body side.

In addition, by preventing twisting of the trunk line, a torsional load is applied to the branch part of the branch line at the end of the trunk line when the branch line wired on the handle side swings following the handle operation. When the is operated in the reverse direction, it is twisted back so that the torsional load is not always applied, and the bending durability can be improved.
In addition, if the main line of the main wire harness is wired without causing twisting, the branch line branching from the main line is not twisted, and the branch terminal is connected to the connector of the meter or switch. Connector fitting can be performed without twisting the wire.
The protective tube provided with the above-described straight mark line may be provided on the branch line branched from the main line of the main wire harness. In this case, the branch line can be wired so as not to be twisted.

  Furthermore, in the protective tube of the present invention, a linear mark line parallel to the central axis of the tube is formed integrally with the tube body on the outer peripheral surface of the tube body. Therefore, it is possible to eliminate the work of attaching the mark line in the subsequent process as in Patent Document 1, and the workability can be improved. In addition, since the mark line is integrally formed with the protective tube, the mark line will not disappear even if the main wire harness covered with the protective tube gets wet, and check whether it is twisted during maintenance. Can do.

The mark line provided on the protective tube is provided with one protrusion or a plurality of protrusions on the outer peripheral surface of the tube main body at regular intervals in the circumferential direction, and the protrusions serve as the mark lines.
When the protrusions are provided in this manner, the protrusions also function as reinforcing ribs, and the wear and bending durability of the protective tube can be improved.
Alternatively, the tube main body may have a polygonal cross section or a star shape, and may have a protruding end portion that is continuous in a linear direction, and the protruding end portion may be the mark line. That is, the shape of the protective tube itself is a shape in which a linear mark line is generated. Thus, when the mark line is formed in the shape of the tube main body, it is not necessary to provide a protrusion from the outer peripheral surface of the protective tube, the tube outer diameter does not increase, and it is preferably used when the routing area is narrow. it can.

The mark line may be formed of a mark member that is insert-molded at the time of forming the tube body and exposed on the outer peripheral surface of the tube body, and the color of the mark member may be different from the color of the tube body. .
Thus, if the mark line is formed in a color different from the color of the tube body, the mark line can be made conspicuous. And unlike patent document 1, since the mark line is provided with the insert mold at the time of shaping | molding of a tube main body, workability | operativity improves.

  Since the protective tube is an extrusion-molded product, the mark line can be easily provided continuously in the length direction when the protective tube is sheathed on the main line of the long main wire harness.

  As described above, in the present invention, a straight mark line is formed by integral molding on a resin protective tube that is externally mounted on at least the main wire harness to be routed on the motorcycle. It can be easily routed without generating. As a result, interference with other parts can be prevented, and the clip provided on the trunk line can be reliably locked in the locking hole on the vehicle body side. Moreover, even if the branch line branched from the end of the main line moves following the handle operation, the torsion applied to the main line is twisted back by the handle operation in the reverse direction, and it is possible to prevent the torsional load from being applied constantly. .

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a protective tube 20 that is externally mounted on the trunk line 4 of the main wire harness 3 of the motorcycle.
As shown in FIGS. 7 and 8, the main wire 4 of the main wire harness 3 is connected to the distribution box 2 housed in the lower part of the seat 1 at one end, and is routed to the front frame 5 through the floor F. It is raised upward inside the frame 5, and the upper end of the trunk line 4 is locked to the vehicle body by a band clip 12 and branches into branch lines 6 and 7. These branch lines 6 and 7 are connected to the meters 9 and various operation switches 10 provided on the upper surface of the steering shaft 8, and wired to the left and right handles 11A and 11B, and various meters attached to the handles 11A and 11B. It is connected to the class 9 and the operation switch 10.

In FIG. 2, the schematic diagram of the wiring path | route of the main wire harness 3 is shown.
Meters 9 and switches 10 attached to the upper end surface of the steering shaft and the left and right handles 11A and 11B and connected to the branch lines 6 and 7 include a speedometer, a tachometer, a gear position indicator, a water temperature / fuel meter. , Waterproof speaker, multi-monitor, seat heater, main switch, grip heater, washer, headlight high / low switching, direction indicator, horn, wiper, audio switch, kill switch, cooze control, reverse switch, starter / reverse switch , Reaction adjustment switch, optical axis adjustment switch, car navigation operation switch, etc., and so on.

As described above, the main tube 4 of the main wire harness 3 is covered with the protective tube 20 shown in FIG.
The protective tube is made of an extrusion-molded product, and four projections 22 parallel to the central axis of the tube main body 21 are continuously provided in the length direction at intervals of 90 degrees on the outer peripheral surface of the cylindrical tube main body 21. ing. These protrusions 22 are used as straight mark lines 30.

A large number of wires of the trunk line 4 shown in FIG. 1 (B) are inserted through the protective tube 20. As shown in FIG. 3, the protective tube 20 is externally attached to the trunk line 4 from the distribution box 2 to the tip where the branch lines 6 and 7 are branched. The trunk line 4 is bent and routed at a required location.
A band clamp 24 is fastened and fixed to the protective tube 20 sheathed on the trunk line 4 with a required interval in the length direction as shown in FIG. The projection 22 of the protective tube 20 is cut off at the portion where the band 24a of the band clip 24 is wound, so that the projection 22 is not deformed by being crushed by the band 24a. In addition, when the protrusion amount of the protrusion 22 is small, it is not necessary to cut the protrusion 22 at the winding portion of the band 24a. The band clamp 24 is inserted and locked in a locking hole (not shown) previously drilled in the vehicle body.

  As described above, since the protective tube 20 having the straight mark line 30 is sheathed on the main line 4 of the main wire harness 3 that is bent and wired at a required location, the mark line 30 is arranged when the main line 4 is routed. As a result, it can be easily routed so as not to be twisted, and the routing workability can be improved. Further, since the main line 4 is not twisted, the branch lines 6 and 7 branched from the main line 4 can be routed without being twisted.

In addition, since the projections 22 serving as the mark lines 30 are provided at intervals of 90 degrees, one of the four projections 22 is in a position facing the front of the routing operator during routing, and the protective tube 20 itself The orientation of is not specified, and the routing workability can be further improved.
In addition, the protrusion 22 used as the mark line 30 is not limited to four, and may be one to three.
Further, the protective tube 20 may be externally mounted on the branch lines 6 and 7 together with the trunk line 4.

In FIG. 4, the protection tube 20 of 2nd Embodiment is shown.
In the protective tube 20, the shape of the peripheral wall 25 of the tube body is a substantially star shape in which V-shaped concave portions 25a and convex portions 25b are alternately provided in the circumferential direction. The shape of the peripheral wall 25 can be easily formed by making the die of the molding machine and the shape of the mandrel correspond to each other at the time of extrusion molding.

In the protective tube 20 of the second embodiment, the vertex of the V-shaped convex portion 25b can be the mark line 30, and there is no need to protrude the protrusion serving as the mark line from the outer peripheral surface. Thus, since the projection is not projected from the outer peripheral surface of the tube body, there is an advantage that the entire outer diameter of the protective tube 20 is not increased by the projection.
Note that, as in the second embodiment, any shape may be used as long as a linear edge portion appears on the outer peripheral surface. For example, a polygonal cylinder such as a square cylinder may be used.
Other configurations and operational effects are the same as those of the first embodiment, and thus description thereof is omitted.

In FIG. 5, the protection tube 20 of 3rd Embodiment is shown.
The protective tube 20 is insert-molded so that a long resin-made mark member 27 colored differently from the tube main body 21 is parallel to the central axis of the tube main body 21 when the tube main body 21 having a cylindrical shape is formed. The mark member 27 is exposed on the outer peripheral surface of the tube main body 21 to form a mark line 30. For example, when the tube main body 21 is black, the mark member 27 is, for example, yellow. The number of the mark lines 30 is four, but may be one.

  If it is set as the protection tube 20 of the said 3rd Embodiment, the protection tube 20 can be made into a cylindrical shape, and there exists an advantage which does not take a space at the time of wiring. Moreover, since the mark line 30 is a different color from the tube main body 21, the identification function can be further enhanced.

(A) is a perspective view of the protective tube of 1st embodiment of this invention, (B) is a perspective view which shows the state which has coat | covered the trunk line of the main wire harness with the protective tube. It is a schematic diagram of the main wire harness which coat | covers the said protection tube. (A) is a schematic front view which shows the trunking state of the main wire harness, (B) is a front view which shows the state which has attached the band clamp to the protection tube. It is a perspective view of the protection tube of 2nd Embodiment. It is a perspective view of the protection tube of 3rd Embodiment. It is drawing which shows a prior art example. It is a whole perspective view of the motorcycle which has arranged the main wire harness. It is a perspective view which shows the wiring state around the handle | steering-wheel of a main wire harness.

Explanation of symbols

3 Main wire harness 4 Trunk line 6, 7 Branch line 9 Meters 10 Switches
11A, 11B Handle 20 Protection tube 21 Tube body 22 Protrusion 30 Mark line

Claims (4)

The main wire harness routed on the motorcycle is covered with a plastic cylindrical tube as a protective tube.
The main wire harness is connected to meters and switches mounted on the steering shaft and the left and right handles, branch lines branched from the main line terminal,
The protective tube to be sheathed on at least the trunk line of the main wire harness has a linear mark line parallel to the central axis of the tube main body formed integrally with the tube main body on the outer peripheral surface of the cylindrical tube main body. An exterior protective tube for motorcycle wire harnesses. One or a plurality of protrusions are provided on the outer peripheral surface of the tube main body at regular intervals in the circumferential direction, and the protrusions serve as the mark lines, or
The exterior protection tube for a motorcycle wire harness according to claim 1, wherein the tube body has a polygonal cross section or a star shape, and has a shape having a protruding end portion that is continuous in a linear direction, and the protruding end portion is the mark line. .   The mark line is formed by a mark member that is insert-molded at the time of forming the tube main body and exposed on the outer peripheral surface of the tube main body, and the color of the mark member is different from the color of the tube main body. Exterior protection tube for motorcycle wire harness as described in 1.   The exterior protection tube for a motorcycle wire harness according to any one of claims 1 to 3, wherein the protection tube is made of an extruded product.

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