Wiring harness assembling board

To enable inspection of a taped state at a junction portion of a wiring harness without lifting the wiring harness at a wiring harness assembling board used for the manufacturing of an automotive wiring harness. A wiring harness assembling board is provided with a board main body 1a and a plurality of wire retainers 3 which include a shaft and a wire retaining portion 3b at the leading end of the shaft and stand in specified positions of the board main body 1a. A flat mirror member 11 for reflecting the rear side of a wiring harness W/H is disposed in the vicinity of at least one wire retainer 3 corresponding to a junction portion of the wiring harness W/H.

BACKGROUND OF THE INVENTION 
1. Field of the Invention 
The present invention relates to a wiring harness assembling board used for 
the manufacturing of an automotive wiring harness and, particularly to an 
assembling board which enables the inspection of taping at junction 
portions of a wiring harness without lifting the wiring harness therefrom. 
2. Description of the Prior Art 
A wiring harness formed by binding a multitude of wires has been used to 
arrange electrical devices of an automotive vehicle. A wiring harness 
assembling board 1 as shown in FIG. 10 is used to manufacture a wiring 
harness W/H. 
The assembling board 1 is such that a board main body comprised of a 
rectangular plate having desired width and height (for example, 
width=about 180 cm and height=90 cm) is placed on a mount 1b, preferably 
inclined forward toward an operator 2 at a specified angle. 
Elevating wire retainers 3 as shown in FIG. 3 stand in specified positions 
of the board main body 1a. Each wire retainer 3 includes a base 3a, a two- 
or three-forked or plurally forked wire retaining portion 3b, and an 
elevating shaft 3c. The wire retaining portion 3b is provided at the 
leading end of the elevating shaft 3c. Through holes (not shown) are 
formed in positions of the assembling board 1 where the wire retainers 3 
are mounted. Each elevating shaft 3c is easily settable to a projecting 
position where the wire retaining portion 3b is distanced from and above 
the board main body 1a as shown by solid line in FIG. 11 and to a 
retracted position where the wire retaining portion 3b is lowered to the 
base 3a as shown by dotted line in FIG. 11. No detailed description is 
given on the specific structure of the wire retainer 3 since it is known. 
When the wiring harness W/H is manufactured, the elevating shafts 3c of 
the respective wire retainers 3 are first set in their projecting 
positions, and wires 5 used for the construction of the wiring harness W/H 
are arranged at the wire retaining portions 3b. Subsequently, adhesive 
tape 6 is wound around the arranged wires 5 to bundle them. At this time, 
when the adhesive tape 6 comes to a portion of the wiring harness 
corresponding to the position of the wire retainer 3, the elevating shaft 
3c is set in its retracted position, thereby avoiding interference of the 
adhesive tape 6 with the wire retainer 3. 
After the completion of taping, an inspection is made as to whether the 
adhesive tape 6 is completely wound at the junction portions of the wiring 
harness W/H, i.e. whether there are positions where the wires 5 can be 
seen between two adjacent winds of the tape 6. 
With the prior art wiring harness assembling board 1, the above inspection 
makes it necessary to, after moving the wire retaining portion 3b of the 
wire retainer 3 to its retracted position, lift the wiring harness W/H and 
to see the side (rear side) of the wiring harness W/H opposite from the 
operator 2. This leads to an increase in the number of operation steps. 
Further, it is cumbersome to lift the wiring harness W/H. More 
specifically, in a junction portion A near an end of the wiring harness 
W/H, the wiring harness W/H can easily be lifted only by lifting the 
junction portion A to see the taping on the rear side. However, in a 
junction portion B near the middle of the wiring harness W/H, the wiring 
harness W/H cannot be lifted only by lifting the junction portion B, 
making it necessary to lift the wiring harness W/H in neighboring junction 
portions C, D. Since the total weight of the wiring harness W/H is not 
light, it is very cumbersome and tiring to frequently lift the wiring 
harness W/H. 
The present invention was developed to solve the problems associated with 
the prior art wiring harness assembling board, and an object thereof is to 
facilitate the confirmation as to how an adhesive tape is wound. 
SUMMARY OF THE INVENTION 
According to the invention the number of steps necessary for the 
confirmation as to how an adhesive tape is wound around the wires is 
reduced thus facilitating the confirmation. 
According to the invention there is provided a wiring harness assembling 
board, comprising: a board main body, at least one wire retainer being 
arranged at a predetermined or predeterminable position on the board main 
body, and at least one mirror member capable of reflecting at least partly 
a portion, in particular a rear side of a wiring harness arrangeable on or 
at the wire retainer. 
According to a preferred embodiment the at least one mirror member is 
disposed or disposable or arrangeable in the vicinity of the wire 
retainer, in particular corresponding to a junction portion of the wiring 
harness. 
Preferably, the one or more wire retainers include a shaft and a wire 
retaining portion being in particular forked or U-shaped at a leading end 
of the shaft. 
The mirror member comprises at least one substantially planar mirror 
portion. 
Further preferably, the mirror member has a substantially curved, 
particularly concave and/or convex mirror surface or portion, wherein the 
substantially curved mirror portion has particularly a predetermined or 
predeterminable magnification factor or magnification factor range. 
Thus the operator has the possibility to inspect the winding of the tape 
and the connection of the forked or branched off wire with an enhanced 
accuracy or degree of precision. 
According to a further preferred embodiment of the invention, the wiring 
harness assembling board further comprises angle or orientation adjusting 
means (e.g. a ball joint mechanism) for adjusting or varying an angle or 
orientation of the mirror member with respect to the board main body. 
Thus the operation and orientation of the mirror member is facilitated, 
allowing in particular an adaptation to different operators having e.g. 
different heights. 
Preferably, the mirror member comprises at least two members being 
pivotally connected with one another, wherein an orientation or an angle 
of inclination between the members is adjustable. 
Further preferably, the mirror member comprises first, second and third 
members being in particular substantially flat, the second and third 
members being pivotally connected with one and the other sides of the 
first member, respectively, and wherein orientation or angles of 
inclination of the second and third members with respect to the first 
member are adjustable, in particular independently from each other. 
Most preferably, the members are pivotally connected with one another by 
means of at least one hinge. 
According to a further preferred embodiment of the invention, the mirror 
member is at least partly, elastically and/or plastically deformable. 
Preferably, the wiring harness assembling board further comprises 
suspension or supporting means for displaceably or movably supporting or 
suspending the mirror member, wherein the mirror member is displaceable in 
one, two or three dimensions. 
Thus an operator can easily adapt the orientation and/or placement of the 
mirror to a new working condition e.g. after a shift change or the like. 
According to a preferred embodiment of the invention there is provided a 
wiring harness assembling board, comprising: 
a board main body, and 
a plurality of wire retainers which include a shaft and a forked or 
U-shaped wire retaining portion at the leading end of the shaft and stand 
in specified or predetermined or predeterminable positions of the board 
main body, 
wherein a mirror member for reflecting at least partly the rear side of a 
wiring harness is disposed in the vicinity of at least one wire retainer 
corresponding to a junction portion of the wiring harness. 
When a wiring harness is manufactured using the above wiring harness 
assembling board, the rear side of at least part of the wiring harness is 
reflected on the mirror member disposed in the vicinity of at least one 
wire retainer corresponding to the junction portion of the wiring harness. 
How an adhesive tape is wound around the wiring harness can be confirmed 
on the basis of the reflection of the mirror member. Accordingly, it is 
not necessary to lift the wiring harness, which in turn reduces the number 
of operation steps. Further, since the taped state can be easily confirmed 
only by seeing the reflection on the mirror surface of the mirror member 
as described above, a working time can be shortened. 
The mirror member is preferably in the form of a flat plate. 
If the mirror member is in the form of a flat plate, angle adjusting means 
for adjusting an angle of the mirror member with respect to the board main 
body may preferably be provided. 
Accordingly, the angle of inclination of the mirror member can be suitably 
adjusted such that an operator can securely see the reflection of at least 
part of the rear side of the wiring harness on the mirror member. 
The mirror member may have a curved or convex mirror surface. 
The mirror member preferably comprises flat first, second and third 
members, the second and third members being pivotally connected with one 
and the other sides of the first member, respectively, and angles of 
inclination of the second and third members with respect to the first 
member are preferably adjustable. 
By constructing the mirror member as above, the operator can securely see 
the reflection of the rear side of the wiring harness on the mirror member 
even if the position of his eyes slightly changes. 
These and other objects, features and advantages of the present invention 
will become more apparent upon a reading of the following detailed 
description and accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
Illustrated embodiments of the invention are described in detail. The same 
elements as those of the prior art wiring harness assembling board shown 
in FIGS. 10 and 11 are identified by the same reference numbers, and no 
detailed description is given thereon. 
FIGS. 1 to 3 show a first embodiment of the invention. 
Mirror members 11 are disposed in the vicinity of junction portions A, B, C 
of a wiring harness W/H on a board main body 1a. Each mirror member 11 has 
a mirror surface on at least one surface and is, as a whole, in the form 
of a particularly rectangular flat plate. Further, the mirror members 11 
are secured in the vicinity of particularly elevating wire retainers, wire 
holding devices or wire holding jigs 3 used to define the junction 
portions A, B, C with the opposite surfaces of the mirror surfaces adhered 
to an upper surface 1c of the board main body 1a. The elevating wire 
retainers 3 may be secured to the board main body 1a by means of through 
holes (not shown). However, alternatively, magnetic securing means may be 
provided on an end of the elevating wire retainers 3, wherein the magnetic 
securing means adhere on a main board body 1a made out of a metal or 
alloy. 
The dimensions and the mount positions of the mirror members 11 in the form 
of the rectangular flat plates as described above are set such that, when 
an operator 2 stands in front of the board main body 1a, he can see the 
reflection of at least one part or portion of the rear sides of the wiring 
harness W/H in the junction portions A, B, C on the mirror surfaces 11a as 
shown by phantom line in FIG. 2. 
With the wiring harness assembling board 1 of the first embodiment, at 
least one part of the rear side of the wiring harness W/H in the junction 
portion A, B or C is reflected on the mirror surface 11a of the mirror 
member 11 as shown in FIG. 3. Accordingly, the operator 2 can confirm how 
an adhesive tape 6 is wound at the rear side of the junction portion on 
the basis of the reflection on the mirror surface 11a. Thus, according to 
the first embodiment, it is not necessary to lift the wiring harness W/H 
to confirm the taped state, thereby reducing the number of operation 
steps. Further, since the taped state in the junction portions A, B, C can 
be confirmed only by seeing the reflections on the mirror surfaces 11a of 
the mirror members 11 as described above, a time required for the 
inspection can be shortened. 
Although the mirror member 11 is in the form of a rectangular flat plate in 
the first embodiment, it may be a flat plate having a triangular, 
circular, elliptical or any suitable shape provided that the operator 2 
can see the reflection of the rear side of the wiring harness W/H in the 
junction portions A, B, C on the mirror member 11 as described above. 
FIG. 4 shows a second embodiment of the invention. 
In this embodiment, mirrors 13 having a curved or non-planar surface, in 
particular a substantially semielliptical shape are disposed substantially 
in the vicinity of the junction portions A, B, C of the wiring harness 
W/H. Each mirror member 13 has a mirror surface 13a formed particularly on 
the entire substantially outer semielliptical surface, and is securely 
adhered to the board main body 1a in the vicinity of the wire retainer 3 
which defines the junction portion A, B or C. 
In the second embodiment, similar to the first embodiment, the taped state 
on the rear sides of the junction portions can be confirmed on the basis 
of the reflections on the mirror surfaces 13a of the mirror members 13 
and, hence, it is not necessary to lift the wiring harness W/H. 
Since the mirror surface 13a of the mirror member 13 is a convex surface in 
the second embodiment, the operator 2 can securely see the reflection of 
the rear side of the wiring harness W/H on the mirror surface 13a even if 
a position P (see FIG. 2) of the operator's eyes slightly changes or 
changes within a predetermined or predeterminable range. 
Although the mirror member 13 is semielliptical in the second embodiment, 
there may be provided, for example, a mirror member 15 having a 
substantially semicylindrical shape as shown in FIG. 5. In this case, a 
mirror surface 15a is formed on the outer wall of the mirror member 15. It 
should be noted that the mirror member may have any other suitable curved 
or convex and/or concave surface. 
FIGS. 6 and 7 show a third embodiment of the invention. 
In this embodiment, mirror members 17 disposed in the vicinity of the 
junctions portions A, B, C of the wiring harness W/H each include a first 
member 18, a second member 19 and a third member 20 which are particularly 
rectangular substantially flat plates. Surfaces of the first to third 
members 18, 19, 20 on one side are formed into mirror surfaces 18a, 19a, 
20a. 
The first member 18 has its surface opposite from the mirror surface 18a 
secured to the upper surface 1c of the board main body 1a. One side 18b of 
the first member 18 is pivotally connected with a side 19b of the second 
member 19a via a pair of hinges 21A, 21B. More specifically, the second 
member 19 is pivoted with respect to the first member 18 secured to the 
upper surface 1c of the board main body 1a as indicated by an arrow in 
FIG. 6 about the hinges 21A, 2lB, thereby enabling adjustment of an angle 
of inclination of the second member 19 with respect to the first member 
18. At the rear side of the second member 19, there is provided an 
elevating shaft 31 including a substantially cylindrical hollow tubular 
member 41 having its base end secured to the board main body 1a, and a 
coupling shaft 42 slidably or telescopically inserted into the tubular 
body 41 and having its leading end coupled with an oblong hole 35 formed 
in an L-shaped fitting mounted to the second member 19. 
The other side 18c of the first member 18 is also pivotally connected with 
a side 20b of the third member 20 via further hinges 21A, 2lB, thereby 
enabling adjustment of an angle of inclination of third member 20 with 
respect to the first member 18. Another elevating shaft 31 is provided at 
the rear side of the third member 20. Accordingly, in the third 
embodiment, the mirror member 17 is selectively set to a state where the 
mirror surfaces 18a to 20a of the first to third members 18 to 20 form a 
substantially flat plane as shown in FIG. 7(A) and to a state where the 
second and third members 19, 20 are held at specified or predetermined or 
predeterminable angles with respect to the first member 18, thereby 
forming a substantially U-shaped mirror surface as a whole as shown in 
FIG. 7B. Thus, in the third embodiment, the angles of inclination of the 
second and third members 19, 20 are suitably adjusted depending upon the 
position of the operator's eyes so that the operator 2 can securely see 
the reflection of the wiring harness W/H on any of the mirror surfaces 18a 
to 20a of the first to third members 18 to 20. 
FIGS. 8 and 9 show a fourth embodiment of the invention. 
In this embodiment, similar to the first embodiment, a mirror member 25 is 
particularly in the form of a substantially rectangular plate, and a 
mirror surface 25a is formed on one surface of this mirror member 25. 
Further, in this embodiment, there is provided an angle adjusting 
mechanism 27 for adjusting an angle of the mirror member 25 with respect 
to the upper surface 1c of the board main body 1a. 
The angle adjusting mechanism 27 includes a pair of pivoting shaft 30A, 30B 
projecting in the vicinity of the junction portion A, B or C of the wiring 
harness W/H and a pair of elevating shafts 31A, 31B which are juxtaposed 
and distanced from the pivoting shafts 30A, 30B. The mechanism 27 also 
includes four L-shaped fittings 33A, 33B, 33C, 33D disposed in specified 
positions of a rear surface 25b of the mirror member 25. Each of the 
L-shaped fittings 33A to 33D includes a fixed portion 33a secured to the 
rear surface 25b of the mirror member 25 and a connection portion 33b 
projecting substantially in a normal direction to the fixed portion 33a 
from the rear surface 25b. The connection portions 33b of the fittings 
33A, 33B are each formed with an oblong through hole 35. 
The pivoting shafts 30A, 30B have their leading ends bent substantially at 
right angles or substantially parallel to the rear surface 25b as shown in 
FIG. 9 while having their base ends secured to the board main body 1a. An 
external thread portion 36 is formed at each bent end of the pivoting 
shafts 30A, 30B. The external thread portions 36 are inserted through 
particularly round holes 34 formed in the fittings 33A, 33B secured to the 
rear surface 25b of the mirror member 25. Further, nuts 40 are spirally 
fitted to the external thread portions 36. 
The elevating shafts 31A, 31B each include a substantially cylindrical 
hollow tubular body 41 having its end secured to the board main body 1a 
and a coupling shaft 42 slidably or telescopically inserted into the 
tubular body 41. The leading end of each coupling shaft 42 is bent 
substantially at right angles, and an external thread portion 43 is formed 
at this bent end. The external thread portions 43 of the respective 
coupling shafts 42 are inserted through the oblong holes 35 of the 
fittings 33C, 33D secured to the rear surface 25b of the mirror member 25. 
Further, nuts 40 are spirally fitted to the external thread portions 43. 
The tubular bodies 41 of the elevating shafts 31A, 31B are each provided 
with an internal thread hole 45 which extends from the outer surface to 
the hollow portion in a direction at an angle, in particular substantially 
normal to the insertion direction of the coupling shaft 42. To the 
internal thread holes 45 are spirally fitted external thread portions 49 
of fastening members 47A, 47B. 
The fastening members 47A, 47B each include a cylindrical main body 48, the 
external thread portion 49 formed at one end of the main body 48, and a 
handle 50 made particularly of thin bars mounted on the other end of the 
main body 48 in a direction normal to the extension of the main body 48. 
The angle of the mirror member 25 with respect to the board main body 1a is 
adjusted by the angle adjusting mechanism 27 as follows. 
First, the nuts 40 spirally fitted to the external thread portions 36, 43 
at the leading ends of the pivoting shafts 30A, 30B and the elevating 
shafts 31A, 31B are loosened, making the mirror member 25 pivotal about 
the round holes 34 and oblong holes 35 of the L-shaped fittings 33A to 33D 
with respect to the coupling shafts 42 of the pivoting shafts 30A, 30B and 
the elevating shafts 31A, 31B. 
Subsequently, the handles 50 of the fastening members 47A, 47B are turned 
to draw the external thread portions 49 of the fastening members 47A, 47B 
out of the tubular bodies 41. At this time, instead of completely drawing 
the external thread portions 49 out, they may be retracted to the extent 
that the leading ends thereof are distanced from the coupling shafts 42 
inserted into the tubular bodies 41. If the coupling shafts 42 are moved 
upward and downward in this state as indicated by an arrow C in FIG. 9, 
the mirror member 25 pivots about the external thread portions 36 at the 
leading ends of the pivoting shafts 33A, 33B, thereby adjusting the angle 
of inclination of the mirror member 25 with respect to the board main body 
1a. 
The angle of inclination of the mirror member 25 is fixed in the following 
manner. The external thread portions 49 of the fastening members 47A, 47B 
are spirally fitted to the internal thread portions 45 of the elevating 
shafts 31A, 31B to press the leading ends of the external thread portions 
49 against the coupling shafts 42 within the tubular bodies 41, thereby 
securely positioning the coupling shafts 42. Further, the nuts 40 are 
spirally fitted to the external thread portions 43, 36 of the elevating 
shafts 31A, 31B and the pivoting shafts 30A, 30B. 
In the third embodiment, the angle of inclination of the mirror member 25 
with respect to the board main body can be continuously adjusted. The 
angle of inclination of the mirror member 25 is suitably adjusted 
depending upon the position of the operator's eyes so that the operator 2 
can securely see the reflection of the wiring harness W/H on the mirror 
surface 25a of the mirror member 25. 
In a further embodiment (not shown) the mirror member may be elastically 
and/or plastically deformable, such that an operator can adjust or vary 
the reflection characteristics of the mirror such that he can easily see 
at least part of the rear side of the wiring harness reflected in the 
mirror member. Such a mirror member may be formed e.g. by a thin metal 
plate being particularly supported on an elastic support such as rubber or 
the like. The mirror member may be supported on the board main body by a 
supporting means comprising one or more support members. 
As is clear from the above description, with the wiring harness assembling 
board according to the invention, the mirror member for reflecting the 
rear side of the wiring harness is disposed in the vicinity of at least 
one wire retainer corresponding to the junction portion of the wiring 
harness. Accordingly, the wiring harness needs not be lifted to confirm 
how the adhesive tape is wound, leading to a reduced number of operation 
steps. Since the taped state can be confirmed only by seeing the 
reflection on the mirror surface of the mirror member, a time required to 
check the taped state can be shortened. 
If the angle adjusting means for adjusting the angle of the mirror member 
with respect to the board main body is provided, the angle of inclination 
of the mirror member can be suitably adjusted or changed such that the 
operator can securely see the reflection of the rear side of the wiring 
harness on the mirror member. 
If the mirror member has a curved in particular convex mirror surface or 
includes flat first to third members arranged such that the angles of 
inclination of the second and third members with respect to the first 
member are adjustable, the operator can securely see the reflection of the 
rear side of the wiring harness on the mirror member even if a position of 
his eyes slightly changes.