JP4116356B2 - Instrument panel structure for vehicles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an instrument panel structure for a vehicle which is arranged on the front side of a front seat of an automobile and incorporates a plurality of knee guards (lower leg impact absorbing members).
[0002]
[Prior art]
As this type of vehicle instrument panel structure, there is one disclosed in JP-A-7-52683 shown in FIG. An instrument panel main body (substrate) 1 used for the vehicle instrument panel structure is formed in a predetermined shape by injection molding of synthetic resin, and a harness mounting on which a wire harness 5 is mounted at the rear edge. The portion 2 is formed so as to project integrally over the entire width in the vehicle width direction. A plurality of notches 3 are formed in the harness mounting portion 2. Then, the wire harness 5 is arranged on the harness mounting portion 2 via a protector 4 formed with a locking portion having a substantially T-shaped cross section (not shown) locked on each notch portion 3 of the harness mounting portion 2 on the lower surface. It has come to be searched.
[0003]
A technique for arranging a wire harness in the instrument panel main body is disclosed in JP-A-1-190551.
[0004]
[Problems to be solved by the invention]
However, in the conventional vehicle instrument panel structure, when the wire harness 5 is routed to the harness mounting portion 2 of the instrument panel body 1, a dedicated mounting part such as the protector 4 is indispensable. Accordingly, the number of parts increased and the cost was high. Further, since the respective locking portions on the lower surface of the protector 4 must be locked to the respective notches 3 of the harness placing portion 2, the wiring work of the wire harness 5 is complicated.
[0005]
Therefore, the present invention has been made to solve the above-described problems, and can reliably hold the wire harness without using a dedicated mounting component, and can improve the wiring workability of the wire harness and the components. An object of the present invention is to provide a vehicle instrument panel structure capable of reducing the cost by reducing the number of points.
[0006]
[Means for Solving the Problems]
According to the first aspect of the present invention, a harness routing groove for guiding and housing the wire harness is formed on the surface side of the synthetic resin steering support beam, and the wire harness is routed and held in the harness routing groove. In the vehicle instrument panel structure configured as described above, the wire harness is held by a bent portion of a substantially annular plate-like knee guard attached to the steering support beam.
[0007]
In this instrument panel structure for a vehicle, the wire harness routed in the harness routing groove of the synthetic resin steering support beam is surely secured at the bent portion of the substantially annular plate-like knee guard attached to the steering support beam. So that it will not fall out of the harness routing groove. Further, since the knee guard is also used as the mounting part for the wire harness, there is no need for a dedicated mounting part such as a protector, and the number of parts is reduced accordingly, and the cost can be reduced.
[0008]
A second aspect of the invention is the vehicle instrument panel structure according to the first aspect, wherein the harness routing groove is formed between a pair of reinforcing ribs integrally projecting in the longitudinal direction of the surface of the steering support beam. It is formed.
[0009]
In this vehicle instrument panel structure, the harness routing groove is also used between the pair of reinforcing ribs integrally formed in the longitudinal direction of the surface of the steering support beam, thereby reducing the cost and the overall weight. It is further planned.
[0010]
A third aspect of the invention is the vehicle instrument panel structure according to the first aspect, wherein the wire harness is further held by a bracket for fixing a steering column attached to the steering support beam. To do.
[0011]
In this vehicle instrument panel structure, the wire harness routed in the harness routing groove is further held by the bracket for fixing the steering column attached to the steering support beam, and the wire from the harness routing groove is The harness is more reliably prevented from falling off.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0013]
FIG. 1 is a cross-sectional view of a vehicle instrument panel structure according to an embodiment of the present invention, and FIG. 2 is a perspective view showing a state before a wire harness is routed to a steering support beam used in the vehicle instrument panel structure. FIG. 3 is a perspective view showing a state after the wire harness is routed on the steering support beam.
[0014]
As shown in FIG. 1, the instrument panel 10 is generally composed of a steering support beam 11 formed by injection molding of a synthetic resin and a decorative plate 12 that covers the steering support beam 11. The steering support beam 11 is suspended in the vehicle body width direction in the front space of the passenger seat (between the front pillar inners 20 and 20 on both sides). At a position facing the driver's seat of the steering support beam 11, a steering column 23 holding the steering shaft 22 is attached via a bracket 24 for fixing the steering column so as to be substantially orthogonal to the steering support beam 11. is there.
[0015]
As shown in FIGS. 1 to 3, an air outlet 13 for a front differential duct is formed in the upper center of the surface 11a of the steering support beam 11, and a corner portion of the surface 11a facing the passenger seat is formed. Is formed with an airbag mounting portion 14 to which an airbag is attached via a bracket for fixing the airbag (both not shown).
[0016]
Further, at the position near the corner on the front surface 11b side of the front surface 11a of the steering support beam 11, three upper, middle, and lower reinforcing ribs 15, 16, and 17 extending in parallel along the longitudinal direction of the front surface 11b are integrally projected. It is formed. A plurality of reinforcing sub-ribs 15a extending in the vertical direction are integrally formed between the upper and middle reinforcing ribs 15 and 16, respectively. Furthermore, a space formed between the pair of reinforcing ribs 16 and 17 on the middle side and the lower side, the front surface 11b, and both side portions 11c and 11c serves as a harness routing groove 18 that guides and accommodates the wire harness 30.
[0017]
Further, as shown in FIGS. 1 to 3, an aluminum knee guard (for lower legs) is provided between the upper and lower reinforcing ribs 15 and 17 integrally formed on the front surface 11 b of the steering support beam 11 at predetermined intervals. Shock absorbing members) 25 are attached via screws (fixing means) 26, respectively. Each knee guard 25 is formed in a substantially ring-plate shape with attachment piece portions 25a, 25d on both sides, a curved piece portion 25b, and a V-shaped bent portion 25c connected to both ends of the curved piece portion 25b. Yes, it receives the lower leg (knee) of the occupant who moves by the inertial force at the time of collision and absorbs the impact energy.
[0018]
The upper reinforcing rib 15 in the vicinity of the airbag mounting portion 14 of the steering support beam 11 is integrated with the inner reinforcing rib 16. The airbag is attached to the concave airbag mounting portion 14 in this portion via a bracket for fixing the airbag. At this time, the bracket for fixing the airbag is attached so as to block between the middle and lower reinforcing ribs 16 and 17. Moreover, the code | symbol 27 in FIG. 2 is a meter. Furthermore, the wire harness 30 has a plurality of branch harness portions 31, and a connector 32 having a predetermined shape is connected to the end of each branch harness portion 31.
[0019]
According to the vehicle instrument panel structure of the embodiment described above, when assembling the instrument panel 10, first, a pair of reinforcing ribs 16 integrally formed in the longitudinal direction of the front surface 11b side of the surface 11a of the steering support beam 11 is formed. , 17 and the front 11b and the harness wiring groove 18 formed between the side portions 11c, 11c so that the wire harness 30 is accommodated.
[0020]
When a plurality of knee guards 25 are screwed to the reinforcing ribs 15 and 17 of the steering support beam 11 with screws 26, the wire harness 30 is held and fixed by the knee guards 25.
[0021]
Further, when the steering column fixing bracket 24 is fixed to the surface 11a of the steering support beam 11 with screws 26, the wire harness 30 is further held and fixed by the steering column fixing bracket 24. Further, when the air bag fixing bracket is attached to the air bag mounting portion 14 of the steering support beam 11 with screws, the wire harness 30 is further held and fixed by the air bag fixing bracket. Thereby, dropping of the wire harness 30 from the harness routing groove 18 can be prevented more reliably.
[0022]
In this way, the wire harness 20 routed in the harness routing groove 18 of the steering support beam 11 is held by the V-shaped bent portions 25 c of the plurality of knee guards 25 attached to the steering support beam 11. As a result, the wire harness 30 can be securely held and fixed without using a dedicated mounting component such as a protector as in the prior art, and the number of components can be reduced to reduce costs. be able to.
[0023]
In addition, since the harness routing groove 18 is formed between the pair of reinforcing ribs 16 and 17 integrally formed in the longitudinal direction of the surface 11a of the steering support beam 11, the harness routing is performed by the pair of reinforcing ribs 16 and 17. The groove 18 can also be used, and the cost can be further reduced correspondingly, and the overall weight can be reduced.
[0024]
Further, since the wire harness 30 routed in the harness routing groove 18 is further held by the bracket 24 for fixing the steering column attached to the steering support beam 11, as in the prior art, a dedicated protector or the like is used. The wire harness 30 can be more securely held and fixed without using any mounting part.
[0025]
According to the embodiment, the harness routing groove is shared between the pair of reinforcing ribs to reduce the cost. However, a dedicated harness routing recess is provided along the longitudinal direction on the surface side of the steering support beam. Of course, it may be formed as a harness routing groove.
[0026]
【The invention's effect】
As described above, according to the first aspect of the present invention, the substantially circular plate-like knee guard that attaches the wire harness routed in the harness routing groove of the synthetic resin steering support beam to the steering support beam. since to hold at bent portions of, the wire harness without using a dedicated mounting parts of the protector, etc. can be held securely, that are able to reduce the number of parts cost reduction Can do.
[0027]
According to the second aspect of the present invention, the harness routing groove is formed between the pair of reinforcing ribs integrally formed in the longitudinal direction of the surface of the steering support beam. Thus, the cost can be further reduced and the overall weight can be reduced.
[0028]
According to the invention of claim 3, since the wire harness routed in the harness routing groove is further held by the bracket for fixing the steering column attached to the steering support beam, a dedicated attachment such as a protector is provided. The wire harness can be more reliably held without using parts.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a vehicle instrument panel structure according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a state before a wire harness is routed to a steering support beam used in the vehicle instrument panel structure.
FIG. 3 is a perspective view showing a state after a wire harness is routed on the steering support beam.
FIG. 4 is a perspective view showing a state before routing a wire harness of a conventional steering support beam.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Instrument panel 11 Steering support beam 11a surface made of synthetic resin 11a Surface 16, 17 A pair of reinforcement ribs 18 Harness wiring groove 24 Steering column fixing bracket 25 A substantially annular plate-like knee guard 25c Bending part 30 Wire harness

Claims (3)

A harness for routing a harness for guiding and accommodating a wire harness is formed on the surface side of a steering support beam made of synthetic resin, and the wire harness is routed and held in the harness routing groove. In the construction panel structure,
An instrument panel structure for a vehicle, wherein the wire harness is held by a bent portion of a substantially annular plate-like knee guard attached to the steering support beam. The vehicle instrument panel structure according to claim 1,
An instrument panel structure for a vehicle, wherein the harness routing groove is formed between a pair of reinforcing ribs that are integrally projected in the longitudinal direction of the surface of the steering support beam. The vehicle instrument panel structure according to claim 1,
An instrument panel structure for a vehicle, wherein the wire harness is further held by a bracket for fixing a steering column attached to the steering support beam.

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