JP2009286162A - Impact-absorbing structure for instrument panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an impact-absorbing structure for an instrument panel capable of efficiently absorbing an impact force by a collision to the instrument panel of a human body portion at a collision accident or the like. <P>SOLUTION: The impact-absorbing structure for the instrument panel reduces the impact force to a human body when the human body portion of the head H, the knee K or the like of an occupant 8 by the collision accident of the vehicle collides to the instrument panel 1. The instrument panel 1 has: a central box 3; a surface panel 2 constituting a surface of the instrument panel 1 and mounted with the central box 3; and vertical walls fixed to the inside of the instrument panel 1 and oppositely arranged close to a vehicle front side of a rear end of the central box 3 at a front side of a driver's seat or a front passenger seat. When a storage box is forwardly moved relative to the vehicle accompanied by the deformation of the surface panel by the collision of the human body portion, a projection 3b' guided for upwardly or downwardly guiding a rear end of the storage body is provided on a vertical wall 5'. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an impact absorbing structure for an instrument panel that absorbs an impact force caused by the collision and reduces the impact force on the human body when a human body part of an occupant collides with the instrument panel of the vehicle due to a vehicle collision accident or the like. About.

  Conventionally, when an occupant's body part collides with an instrument panel of a vehicle due to a vehicle collision accident or the like, an impact absorption structure for an instrument panel that absorbs the impact force caused by the collision and reduces the impact force on the human body has been provided. It is known (see Patent Document 1).

  In Fig.1 (a), the code | symbol 1 is an instrument panel of a vehicle and the instrument panel 1 is mainly formed of the synthetic resin.

  The instrument panel 1 has a surface panel portion 2 constituting the surface portion thereof, and a center box 3 for storing small items in front of the passenger seat, and a lid 3a for the center box 3 is provided on the front side of the center box 3. Is provided.

  In FIG. 1B, reference numeral 4 denotes a passenger compartment, reference numeral 5 denotes a vertical wall provided inside the instrument panel 1, reference numeral 6 denotes a steering support member fixed to the vehicle body, reference numeral 7 denotes a passenger seat, reference numeral 8 Is a passenger sitting on the passenger seat 7.

  The vertical wall 5 is disposed in front of the rear end 3b of the center box 3 in front of the vehicle, and is attached to the steering support member 6 fixed to the vehicle body together with the instrument panel 1 by a fixture (not shown). .

  As shown in FIG.1 (c), the front-end part of the center box 3 is being fixed to the surface panel part 2 via the recessed part 2a, and the lid 3a is attached to the opening part of the recessed part 2a so that opening and closing is possible. (The illustration is omitted in FIG. 1C).

  By the way, an occupant 8 may collide a human body part such as the head H or the knee K with the surface portion of the instrument panel 1 due to an impact such as a vehicle collision accident.

  In such a collision of the human body part with the instrument panel 1, in order to reduce the impact force received by the occupant 8, the surface panel 2 of the instrument panel 1 is actively deformed to It is desirable to absorb the impact force.

  In this conventional example, for this purpose, an opening 5a is provided at a position corresponding to the rear end 3b of the vertical wall 5 as shown in FIG.

  As shown in FIG. 2, if the human body part of the occupant 8 collides with the surface panel portion 2 of the instrument panel 1 due to a vehicle collision accident or the like, the surface panel portion 2 is deformed. 3 moves forward with respect to the vehicle.

  Since the rear end portion 3b of the center box 3 and the vertical wall 5 are close to each other, if the opening 5a is not provided in the vertical wall 5, as shown in FIG. The rear end portion 3b hits the vertical wall 5 (see FIG. 2), and the center box 3 is prevented from moving forward, and the deformation of the surface panel portion 2 is restricted accordingly.

  In this case, since the impact force due to the collision of the human body part is not sufficiently absorbed by the instrument panel 1, the passenger 8 in the passenger seat may receive a large impact force.

  In the impact absorbing structure of the instrument panel of this conventional example, as shown in FIG. 2 (b), the opening 5a is provided at a position corresponding to the rear end 3b of the vertical wall 5, so in the event of a collision, Interference between the rear end portion 3b of the center box 3 and the vertical wall 5 is avoided (see FIG. 2), the degree of freedom of deformation of the front panel portion 2 toward the front of the vehicle is increased, and the opening 5a is not provided. Compared to the case, the impact force due to the collision can be absorbed efficiently.

In addition, Patent Document 1 discloses an impact absorbing structure for an instrument panel that reduces an impact force to a human body by providing a urethane impact absorbing pad inside the instrument panel.
JP 2003-327066 A

  However, as shown in FIG. 2 (c), depending on the collision position of the human body part, the rear end 3b of the center box 3 does not pass through the opening 5a of the vertical wall 5 and the portion around the opening 5a of the vertical wall 5 In this case, the instrument panel 1 cannot sufficiently absorb the impact force caused by the collision of the human body part.

  Therefore, if the opening 5a of the vertical wall 5 is enlarged in order to avoid interference between the rear end 3b of the center box 3 and the portion around the opening 5a of the vertical wall 5, the strength of the instrument panel 1 may be reduced. was there.

  Accordingly, the present invention provides an impact absorbing structure for an instrument panel that can efficiently absorb the impact force caused by the collision of the human body part with the instrument panel in the event of a collision accident or the like without impairing the strength of the instrument panel. The purpose is to do.

  In order to achieve the above object, the invention according to claim 1 is configured such that when a human body part of an occupant collides with an instrument panel of the vehicle due to a vehicle collision accident or the like, the impact force due to the collision is absorbed and applied to the human body. An impact absorption structure for an instrument panel that reduces impact force, wherein the instrument panel forms a storage box in front of a driver seat or a passenger seat, and a surface portion of the instrument panel, and the storage box And a vertical wall that is provided inside the instrument panel and is disposed opposite to the vehicle front side of the rear end of the storage box. When the storage box moves forward with respect to the vehicle with the deformation of the surface panel due to the collision, the rear end of the storage box is moved upward. Others are characterized by shock-absorbing structure of the instrument panel guiding portion for guiding downward is provided on the vertical wall.

  In the impact absorbing structure for an instrument panel according to claim 1 configured as described above, the rear end portion of the storage box is guided while the entire storage box moves forward of the vehicle when the human body part collides with the surface panel portion. The storage box moves without being locked to the vertical wall in front of the vehicle, and the front panel part is sufficiently deformed with the movement of the storage box. The impact force can be absorbed efficiently.

  The present invention will be described based on examples of embodiments according to the present invention.

<Constitution>
In Fig.3 (a), the code | symbol 1 is an instrument panel of a vehicle, and the instrument panel 1 is mainly formed of the synthetic resin.

  The instrument panel 1 has a surface panel portion 2 constituting a surface portion thereof, and a center box 3 'for storing small items in front of the passenger seat, and for the center box 3' on the front side of the center box 3 '. The lid 3a is provided.

  3B, reference numeral 4 denotes a passenger compartment, reference numeral 5 ′ denotes a vertical wall provided inside the instrument panel 1, reference numeral 6 denotes a steering support member fixed to the vehicle body, reference numeral 7 denotes a passenger seat, reference numeral Reference numeral 8 denotes an occupant sitting on the passenger seat 7.

  The vertical wall 5 ′ is disposed close to the front of the vehicle at the rear end of the center box 3 ′, and is attached to the steering support member 6 fixed to the vehicle body by a fixture (not shown) together with the instrument panel 1. Yes.

  As shown in FIG. 4 (a) or 4 (b), in the impact absorbing structure for an instrument panel of this embodiment, a semi-cylindrical guided convex portion 3b ′ is swelled at the rear end portion of the center box 3 ′. A guide protrusion 5a ′ is formed on the vertical wall 5 ′ at a position facing the guided protrusion 3b ′. The guide convex portion 5a 'is formed in a semi-cylindrical shape larger than the guided convex portion 3b' or a large curved surface.

  The surface of the guided convex portion 3b 'and the surface of the guiding convex portion 5a' are formed smoothly, and slide smoothly when they come into contact with each other.

<Function and effect>
As shown in FIG. 1A of FIG. 5A, for example, the head H of the occupant 8 collides with the upper portion of the opening of the concave portion 2a of the surface panel portion 2, and the guided convex portion 3b ′ of the center box 3 ′. When it hits slightly below the center of the guide convex portion 5a ′ of the vertical wall 5 ′, as shown by the arrow in FIG. 5 (2), the guided convex portion 3b of the center box 3 ′. 'Is guided downward by the guide projection 5a' of the vertical wall 5 '.

  And since the guided convex part 3b 'of the center box 3' is guided downward by the guide part 5a 'while the entire center box 3' is moving forward, the center box 3 'has a vertical wall 5' in front of the vehicle. Since the surface panel portion 2 is sufficiently deformed with the movement of the center box 3 ′, the impact force due to the collision can be efficiently absorbed.

  5B, for example, the knee K of the occupant 8 collides with the lower part of the opening of the concave portion 2a of the surface panel portion 2, and the guided convex portion 3b of the center box 3 ′. When “abuts” slightly above the center of the guide convex portion 5a ′ of the vertical wall 5 ′, as shown by the arrow in FIG. 5B, the guided convex portion of the center box 3 ′. 3b ′ is guided upward by the guide projection 5a ′ of the vertical wall 5 ′.

  Since the guided convex portion 3b ′ of the center box 3 ′ is guided upward by the guide portion 5a ′ while the entire center box 3 ′ is moving forward, the center box 3 ′ is the vertical wall 5 ′ in front of the vehicle. Since the surface panel portion 2 is sufficiently deformed as the center box 3 'moves, the impact force due to the collision can be absorbed efficiently.

  Thus, in the instrument panel shock absorbing structure of the present embodiment, when a human body part such as the head H or knee K of the occupant 8 collides with the instrument panel 1 of the vehicle at the time of the collision of the vehicle, the impact due to the collision. The force is absorbed to reduce the impact force of the occupant 8 on the human body.

  As mentioned above, although the Example of embodiment which concerns on this invention has been explained in full detail with reference to drawings, the concrete structure is not limited to this embodiment, and the design of the grade which does not deviate from the summary of this invention Modifications are included in the present invention.

  In the present embodiment, a semi-cylindrical guided convex portion 3b 'at the rear end of the center box 3', and a guiding convex portion 5a 'at a position facing the guided convex portion 3b' of the vertical wall 5 '. However, these shapes may be any shape as long as they are smooth convex shapes and can slide smoothly with respect to each other.

Fig. 1 (a) is a front view of an instrument panel of a vehicle, Fig. (B) is a cross-sectional configuration diagram of a compartment portion of the vehicle, and Fig. (C) is a perspective view of a center box portion of the instrument panel of the vehicle as viewed from the rear side. FIG. 4C shows the positional relationship between the center box attached to the instrument panel and the vertical wall of the center box. It is an enlarged view of D1 part of Drawing 1 (b), and shows a problem of an instrument panel of a conventional example. FIG. 1A is a front view of an instrument panel of a vehicle, and FIG. FIG. 1A is a perspective view of the center box portion of the instrument panel of the vehicle as viewed from the back side, and shows the positional relationship between the center box attached to the instrument panel and the vertical wall of the center box. Moreover, FIG. (B) is a side view of the center box part of the instrument panel of a vehicle. FIG. 3B is a partial view of a portion D2 in FIG. 3B, and FIG. 4A shows the movement of the center box when the head of the occupant collides with the upper portion of the concave opening of the surface panel portion. Shows the movement of the center box when the occupant's knee collides with the lower part of the recess opening of the surface panel.

Explanation of symbols

1 Instrument panel 2 Front panel 3 Center box (storage box)
3b 'guided convex part (rear end part)
5 'vertical wall 5a' guide convex part (guide part)
8 Crew H head (human body part)
K knee (human body part)

Claims (1)

When an occupant's human body part collides with the instrument panel of the vehicle due to a vehicle collision accident or the like, the impact absorbing structure of the instrument panel absorbs the impact force caused by the collision and reduces the impact force on the human body. And
The instrument panel has a storage box in front of a driver seat or a passenger seat,
A surface panel portion constituting the surface portion of the instrument panel and to which the storage box is attached;
A vertical wall provided inside the instrument panel and disposed opposite to the vehicle front side of the rear end of the storage box;
Having
A guide portion that guides the rear end of the storage box upward or downward when the storage box moves forward relative to the vehicle along with the deformation of the surface panel portion due to the collision of the human body part. A shock absorbing structure for an instrument panel, characterized by being provided on a vertical wall.

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