JP7320905B2 - Floor cover for in-vehicle wiring harness and protection structure for in-vehicle wiring harness - Google Patents

Description

The present invention relates to a vehicle wiring harness floor cover and a vehicle wiring harness protection structure.

2. Description of the Related Art Conventionally, an opening for inserting a wire harness is provided in a vehicle body panel forming a floor of a vehicle such as an automobile. Such an opening is covered with a floor cover from the inside of the passenger compartment (see Patent Document 1, for example).

Patent Literature 1 discloses a structure including a vehicle body panel provided with an opening, a wire harness inserted through the opening, and a protector as a floor cover that covers the opening from the inside of the passenger compartment. The upper surface of the vehicle body panel is provided with a recess that continues to the opening. The protector is provided with a recess that faces the recess of the vehicle body panel. When attaching this protector to the vehicle body panel, first, the wire harness is inserted from the bottom to the top through the opening of the vehicle body panel. Subsequently, after the wire harness is inserted through the grommet made of elastic material, the grommet is temporarily placed in the concave portion of the vehicle body panel. In this state, the protector is fastened and fixed to the upper surface of the vehicle body panel with screws. As a result, the wire harness is sandwiched between the recessed portion of the vehicle body panel and the recessed portion of the protector through the grommet, and is released to the outside of the protector. In addition, the protector covers the opening of the vehicle body panel.

JP-A-8-331732

By the way, in the structure of Patent Literature 1, there is a possibility that the wire harness located below the vehicle body panel is damaged when a pebble or the like collides with the wire harness located below the vehicle body panel while the vehicle is running. Therefore, it is necessary to take measures such as thickening the covering material of the wire harness. As a result, when wiring a wire harness, it becomes difficult to bend, and so on.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle wiring harness floor cover and a vehicle wiring harness protection structure capable of suppressing damage to the wiring harness.

A floor cover for an in-vehicle wiring harness for achieving the above object is applied to a vehicle equipped with a wiring harness that is routed by being inserted through a through-hole vertically penetrating a floor panel of a vehicle body, and the wire harness and the through-hole are installed. a cover body covering the through-hole from above and having an escape recess for allowing the wire harness to escape; and a protective wall covering the harness.

According to this configuration, when the vehicle is running, pebbles and the like that scatter toward the wire harness positioned below the floor panel collide with the protective wall, and are less likely to collide with the wire harness. Therefore, damage to the wire harness can be suppressed.

In the vehicle-mounted wiring harness floor cover, a projecting wall is provided downwardly projecting from the cover main body on the opposite side of the protective wall to the wire harness, and the lower end of the projecting wall is: It is preferably located above the lower end of the protective wall.

When water or rainwater splashed from the road surface collides with the protective wall while the vehicle is running, such water moves upward along the outer surface of the protective wall, and then along the lower surface of the cover body toward the outer periphery of the cover body. There is a risk that it may move to the floor and enter between the cover body and the floor panel.

In this respect, according to the above configuration, the water that moves along the lower surface of the cover main body toward the outer peripheral side of the cover main body falls along the projecting wall. As a result, the movement of water along the lower surface of the cover body to the outer peripheral side of the cover body rather than the projecting wall is suppressed. Therefore, it is possible to prevent water from entering between the cover body and the floor panel.

A protective structure for an in-vehicle wiring harness for achieving the above object includes the floor cover, the floor panel, and the wiring harness.
According to the same configuration, the same effect as any one of the above floor covers can be obtained. Therefore, damage to the wire harness can be suppressed.

In the in-vehicle wire harness protection structure described above, it is preferable that a lower end of the protection wall is positioned below the wire harness positioned below the floor panel.
According to this configuration, the protective wall can more effectively protect the wire harness from pebbles and the like that scatter while the vehicle is running.

In the in-vehicle wire harness protection structure described above, it is preferable that the protection wall is provided in front of the wire harness located below the floor panel in the front-rear direction of the vehicle.

While the vehicle is running, pebbles and the like often collide with the wire harness from the front to the rear in the front-rear direction of the vehicle.
In this respect, according to the above configuration, damage to the wire harness can be effectively suppressed.

In the in-vehicle wire harness protection structure, it is preferable that the protection wall is provided outward in the vehicle width direction with respect to the wire harness located below the floor panel.

According to the same configuration, the protective wall can also suppress small stones from colliding with the wire harness from the outside in the vehicle width direction. Therefore, damage to the wire harness can be suppressed more effectively.

According to the present invention, damage to the wire harness can be suppressed.

A perspective view showing an upper part of a floor panel with a floor cover as a center, in a protective structure for an in-vehicle wire harness according to one embodiment. FIG. 4 is a perspective view showing the lower part of the floor panel centering on the floor cover of the same embodiment; 2 is an exploded perspective view corresponding to FIG. 1; FIG. FIG. 4 is a perspective view showing the lower portion of the floor cover of the same embodiment, where (a) is a view seen from the front and outside, and (b) is a perspective view seen from the rear and inside; FIG. 2 is a cross-sectional view taken along line 5-5 of FIG. 1;

An embodiment of a vehicle wiring harness floor cover and a vehicle wiring harness protection structure will be described below with reference to FIGS. 1 to 5. FIG.
Henceforth, the front-back direction of a vehicle is simply referred to as the front-rear direction L, and the front and rear in the front-rear direction L are simply referred to as the front and the rear. Also, in the vehicle width direction W, a direction toward the center position of the vehicle and a direction away from the center position will be simply referred to as an inner direction and an outer direction.

<Floor panel 10>
As shown in FIGS. 1 to 3, a side frame 14 extending in the front-rear direction L is provided below the floor panel 10 of the vehicle body. Although not shown, a pair of side frames 14 are spaced apart from each other in the vehicle width direction W. As shown in FIG. The side frame 14 shown in FIGS. 1 to 3 is the right side frame 14 when viewed from the rear to the front.

A through-hole 11 is provided outside the side frame 14 of the floor panel 10 so as to penetrate the floor panel 10 vertically.
As shown in FIG. 3, the peripheral edge of the through hole 11 includes a linear portion 11a extending along the vehicle width direction W and a U-shaped portion extending forward from both ends of the linear portion 11a and convex forward. and a curved portion 11b.

A pair of fitting holes 12a are provided behind the through hole 11, more specifically, behind both ends of the straight portion 11a. One fitting hole 12b is provided in front of the through hole 11 .
One locking hole 13 is provided between the pair of fitting holes 12a.

A screw grommet 51 is fitted from above into each of the fitting holes 12a and 12b.
<Wire harness 20>
As shown in FIG. 5, the wire harness 20 is inserted through the through hole 11 and routed.

The wire harness 20 is bent inside the through hole 11 . Portions of the wire harness 20 located above and below the floor panel 10 each extend rearward.

A grommet 30 is attached to a portion of the wire harness 20 located above the floor panel 10 .
As shown in FIGS. 3 and 5, the grommet 30 has a tubular inner member 31 through which the wire harness 20 is inserted, and a tubular outer member 33 surrounding the outer periphery of the inner member 31 at its rear end. ing. The inner member 31 is made of hard resin. The outer member 33 is made of soft resin such as elastomer.

A front end opening 31a of the inner member 31 is positioned directly above the through hole 11 and faces downward.
As shown in FIG. 5 , locking protrusions 32 projecting downward are provided on the outer peripheral surface of a portion of the inner member 31 surrounded by the outer member 33 .

The outer member 33 is provided with an insertion hole 34 through which the locking protrusion 32 is inserted. The locking protrusion 32 is inserted into and locked to the locking hole 13 of the floor panel 10 from above. The grommet 30 is thereby attached to the upper surface of the floor panel 10 .

<Floor cover 40>
As shown in FIGS. 1 to 4B, the floor cover 40 has a pentagonal plate-shaped cover body 41 that covers the through hole 11 from above.

As shown in FIGS. 2 and 5 , insertion holes 42 a and 42 b corresponding to the fitting holes 12 a and 12 b of the floor panel 10 are provided at both ends and front end of the rear portion of the cover body 41 . The floor cover 40 is made of hard resin.

The rear portion of the cover body 41 is provided with an escape recess 43 for letting the wire harness 20 escape. The escape recess 43 has a curved shape along the outer peripheral surface of the grommet 30 .
A protective wall 44 protrudes downward from the lower surface of the cover body 41 .

As shown in FIGS. 2, 4A, and 4B, the protective wall 44 includes a front wall portion 44a provided in front of the wire harness 20 positioned below the floor panel 10, It has a side wall portion 44b provided on the outside, and is L-shaped as a whole when viewed from the bottom. The protrusion heights of the front wall portion 44a and the side wall portions 44b from the lower surface of the cover body 41 are the same.

As shown in FIG. 5 , the lower end of the protective wall 44 is located below the wire harness 20 located below the floor panel 10 .
As shown in FIGS. 4A and 4B, the floor cover 40 has a projecting wall 45 projecting downward from the cover body 41 on the side opposite to the wire harness 20 with respect to the protective wall 44 . have.

As shown in FIGS. 2, 3, and 4(a) and 4(b), the protruding wall 45 includes straight portions 45a extending along both ends of the straight portion 11a on the periphery of the through hole 11. , and a curved portion 45b extending along the curved portion 11b. That is, the projecting wall 45 is not provided directly below the escape recess 43 .

As shown in FIGS. 2 and 5 , the outer peripheral surface of the projecting wall 45 is arranged close to the inner peripheral surface of the through hole 11 . The lower end of the projecting wall 45 is located above the lower end of the protective wall 44 .
A protrusion 46 surrounding the protrusion wall 45 from the outer peripheral side is provided on the lower surface of the cover main body 41 . The protrusion 46 is also provided on the lower surface of the escape recess 43 .

As shown in FIGS. 4(a), 4(b), and 5, an annular seal member 53 is fitted in the groove 47 formed between the protrusion 46 and the protrusion wall 45. As shown in FIGS. A seal member 53 seals between the upper surface of the floor panel 10 and the lower surface of the floor cover 40 .

As shown in FIG. 5 , the outer member 33 seals the space between the lower surface of the escape recess 43 and the upper surface of the floor panel 10 .
The floor cover 40 is fixed to the floor panel 10 by inserting the bolts 52 from above through the insertion holes 42 a and 42 b of the cover body 41 and screwing the bolts 52 into the screw grommets 51 .

Next, the operation of this embodiment will be described.
When the vehicle is running, pebbles and the like scattered toward the wire harness 20 located below the floor panel 10 collide with the protective wall 44 and are less likely to collide with the wire harness 20 (the above is effect 1).

Here, when water splashed from the road surface, rainwater, or the like collides with the protective wall 44 while the vehicle is running, such water moves upward along the outer surface of the protective wall 44 and then travels along the lower surface of the cover body 41 . As a result, there is a risk that the dust will move to the outer peripheral side of the cover main body 41 and enter between the cover main body 41 and the floor panel 10 .

In this regard, in the protection structure for the floor cover 40 and the wire harness 20 of the present embodiment, water moving along the lower surface of the cover main body 41 to the outer peripheral side of the cover main body 41 is projected as indicated by the arrow in FIG. It comes to fall along the wall 45. As a result, the movement of water along the lower surface of the cover body 41 to the outer peripheral side of the cover body 41 rather than the projecting wall 45 is suppressed (above, action 2).

Next, the effects of this embodiment will be described.
(1) The floor cover 40 includes a cover main body 41 that covers the through-hole 11 from above and has an escape recess 43 for escaping the wire harness 20 , and a cover main body 41 that protrudes downward from the cover main body 41 and is lower than the floor panel 10 . and a protective wall 44 covering the wire harness 20 at the end.

According to such a configuration, damage to the wire harness 20 can be suppressed because the effect 1 described above is achieved.
(2) The floor cover 40 has a projecting wall 45 projecting downward from the cover body 41 on the opposite side of the protective wall 44 from the wire harness 20 . The lower end of the projecting wall 45 is located above the lower end of the protective wall 44 .

According to such a configuration, since the above-described effect 2 is achieved, it is possible to suppress water from entering between the cover main body 41 and the floor panel 10 .
(3) The lower end of the protective wall 44 is located below the wire harness 20 located below the floor panel 10 .

According to such a configuration, the protective wall 44 can more effectively protect the wire harness 20 from pebbles and the like that scatter while the vehicle is running.
(4) The protective wall 44 has a front wall portion 44a located forward of the wire harness 20 located below the floor panel 10 .

While the vehicle is running, pebbles and the like often collide with the wire harness 20 from the front in the front-rear direction L to the rear. In this respect, according to the above configuration, damage to the wire harness 20 can be effectively suppressed by the front wall portion 44a.

(5) The protective wall 44 has a side wall portion 44b positioned outward in the vehicle width direction W with respect to the wire harness 20 positioned below the floor panel 10 .
According to such a configuration, pebbles can also be suppressed from colliding with the wire harness 20 from the outside to the inside in the vehicle width direction W by the side wall portion 44b. Therefore, damage to the wire harness 20 can be suppressed more effectively. In this embodiment, the side frames 14 can prevent pebbles from colliding with the wire harness 20 from the inside in the vehicle width direction W to the outside.

<Change example>
For example, the above-described embodiment can be modified and implemented as follows. This embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.

- The protrusion heights of the front wall portion 44a and the side wall portions 44b from the lower surface of the cover body 41 can be made different from each other.
- For example, only one of the front wall portion 44a and the side wall portion 44b may constitute the protection wall 44 .

The lower end of the protection wall 44 may be positioned above the lower end of the wire harness 20 positioned below the floor panel 10 .
- For example, the protruding wall 45 may be configured by only one of the linear portion 45a and the curved portion 45b. Furthermore, the linear portion 45a is omitted, and only one of the portion of the curved portion 45b located forward of the front wall portion 44a of the protective wall 44 and the portion located laterally of the side wall portion 44b is formed as a projecting wall. 45 can also be configured.

- The projecting wall 45 can be omitted.
- In the floor panel 10, the position to which such a protective structure of the wire harness 20 is applied can be appropriately changed. For example, of a pair of cross members that extend along the vehicle width direction W and are spaced apart in the front-rear direction L, the present invention can be applied forward of the front cross member.

According to such a configuration, the front wall portion 44a can prevent pebbles from colliding with the wire harness 20 from the front to the rear in the front-rear direction L, and the side wall portion 44b can prevent pebbles from colliding with the wire harness 20 toward the outside in the vehicle width direction W. Collision of pebbles with the wire harness 20 from the side to the inside can also be suppressed. Further, the collision of pebbles with the wire harness 20 from the rear to the front in the front-rear direction L can be suppressed by the cross member.

Further, the present invention can be applied to the rear side of the pair of cross members relative to the rear side cross member. In this case, it is preferable to fix the floor cover 40 of the above-described embodiment to the floor panel 10 in an inverted posture in the front-rear direction L. As shown in FIG. At this time, the front wall portion 44a is located behind the wire harness 20 located below the floor panel 10 .

According to such a configuration, the front wall portion 44a can prevent pebbles from colliding with the wire harness 20 from the rear to the front in the front-rear direction L. Collision of pebbles with the wire harness 20 from the side to the inside can be suppressed. In addition, the above cross member can prevent pebbles from colliding with the wire harness 20 from the front to the rear in the front-rear direction L. As shown in FIG.

DESCRIPTION OF SYMBOLS 10... Floor panel 11... Through hole 11a... Straight part 11b... Curved part 12a, 12b... Fitting hole 13... Locking hole 14... Side frame 20... Wire harness 30... Grommet 31... Inner member 31a Front end opening 32 Locking projection 33 Outer member 34 Insertion hole 40 Floor cover 41 Cover body 42a, 42b Insertion hole 43 Relief recess 44 Protection Wall 44a... Front wall part 44b... Side wall part 45... Protruding wall 45a... Straight part 45b... Curved part 46... Ridge 47... Groove 51... Screw bolt 52... Bolt 53... Sealing member .

Claims (5)

A floor cover applied to a vehicle equipped with a wire harness that is routed by being inserted through a through hole vertically penetrating a floor panel of a vehicle body, and covering the through hole together with the wire harness from above,
a cover body covering the through-hole from above and having an escape recess for allowing the wire harness to escape;
a protection wall projecting downward from the cover body and covering the wire harness below the floor panel ;
a projecting wall projecting downward from the cover body on the side opposite to the wire harness with respect to the protective wall,
The lower end of the projecting wall is located above the lower end of the protective wall,
Floor cover for in-vehicle wiring harness. A floor covering according to claim 1 ;
the floor panel;
the wire harness;
Protective structure for in-vehicle wiring harnesses. A lower end of the protective wall is positioned below the wire harness positioned below the floor panel,
3. The protection structure for the in-vehicle wire harness according to claim 2 . The protective wall is provided in front of the wire harness located below the floor panel in the front-rear direction of the vehicle.
4. The protection structure for the in-vehicle wire harness according to claim 2 or 3 . The protective wall is provided outward in the vehicle width direction with respect to the wire harness located below the floor panel.
5. The protective structure for an in-vehicle wire harness according to claim 2 .