JP3301945B2 - Shock absorbing structure for vehicle interior parts - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shock absorbing structure for an interior part of a vehicle, and more particularly, to a shock absorbing part of an interior part covering an inner surface of a body component having a corner portion protruding toward the interior of the vehicle. It is about structure.

[0002]

2. Description of the Related Art Conventionally, in a vehicle such as an automobile, an inner surface of a body component of a body constituting a body in accordance with a component part of the body is provided for the purpose of enhancing the design of the interior of the vehicle. , Instrument panels, door trims, pillar garnishes and other various interior parts.

[0003] In recent years, in the event of a collision or the like, in order to more effectively secure the safety of the occupant, a shock absorbing structure has been provided to many of these various interior parts. ing. That is, in many interior parts for vehicles, generally, a rib structure, which is one of shock absorbing means, which is configured by combining a plurality of flat ribs in a lattice, is provided between the body and the body. When the occupant comes into contact with the interior parts due to a collision accident or the like, the rib structure is deformed (crushed) so that the energy of the impact applied to the interior parts can be absorbed. It is composed with.

[0004] For example, a kind of body component part of an automobile, for reasons of strength and the like, a front pillar generally having a corner portion protruding toward the cabin side, and a vehicle having the front pillar. By arranging a rib structure body in which a plurality of vertical ribs and horizontal ribs each made of a synthetic resin having a thin flat plate shape are combined in a lattice shape between a pillar garnish that covers the inner surface on the chamber side. It is common practice to impart an impact structure to the pillar garnish, and the impact absorption structure of the pillar garnish is based on the US occupant head protection regulation (FMVSS20).
It is known that the requirement of 1) is sufficiently satisfied.

However, the present inventors have conducted an impact test on a pillar garnish having such an impact absorbing structure, in which an impact is applied in a direction in which an occupant is most likely to come into contact with the pillar garnish in the event of a collision or the like. As a result, since the front pillar is generally configured to have the corner at a position facing such an impact direction, the front rib is in contact with the corner of the front pillar. Before the rib structure is deformed due to the concentration of the stress due to the impact load at the joint site, the rib structure is moved from the initial arrangement position due to the tearing of the joint site or the deformation of the pillar garnish Then, the characteristics of the rib structure can be sufficiently improved by “sliding through” between the impacted portion of the pillar garnish and a portion of the front pillar facing the impacted portion of the pillar garnish. It is was found that there is a case that can not be use.

[0006]

Here, the present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a body having a corner portion that is convex toward a vehicle compartment side. When an impact is applied to the vehicle interior component that covers the inner surface of the component from the direction facing the corner, the impact energy can be sufficiently absorbed, and the impact energy can be absorbed in any direction. Another object of the present invention is to provide a shock absorbing structure of a vehicle interior part capable of exhibiting excellent shock absorbing performance.

[0007]

According to the present invention, there is provided a body structure which forms a part of a body of a vehicle and has a corner portion protruding toward a passenger compartment of the vehicle. An impact formed by combining a plurality of flat-plated ribs in a grid pattern between a part and a vehicle interior part disposed so as to cover an interior surface of the body component part including the corner portion on the vehicle interior side. In a shock absorbing structure of a vehicle interior component in which an absorbing unit is arranged so that an external impact can be absorbed by the deformation of the shock absorbing unit, in a surface of the vehicle interior component facing the body component. In the vicinity of a position directly facing the vertex of the corner of the body component,
A strut protruding toward the body component is integrally provided to fix and support the shock absorbing means with respect to the strut, while the strut serves to prevent deformation of the shock absorbing means due to the external impact. In an initial stage, the body component is brought into contact with the body component and deformed, and with the further deformation of the shock absorbing means, a slope extending from the apex portion of the corner of the body component toward the base side portion. In contrast, the gist of the present invention is that the corner portion is configured to be slid in a direction away from the vertex portion.

That is, in the shock absorbing structure for a vehicle interior part according to the present invention, the shock absorbing means disposed between the body component and the vehicle interior part covering the inner surface thereof includes:
Since the vehicle interior components are fixed to the pillars that are integrally formed and protruded from the vehicle interior components, the shock absorbing means moves from the initial arrangement position with the deformation of the vehicle interior components due to the contact of the occupant, It is possible to effectively prevent "slip through" from between the impacted portion of the vehicle interior component and a portion of the body component facing the impacted portion of the vehicle interior component.

In such an impact absorbing structure for a vehicle interior part, particularly, a column for fixing the impact absorbing means is provided on the body component in an initial stage of deformation of the impact absorbing means due to an external impact. Since it is adapted to be brought into contact and deformed, in the initial stage of deformation of the shock absorbing means, the shock energy can be effectively absorbed by the deformation of the shock absorbing means and each of the columns,
Thereby, even when the corner portion of the body component is brought into contact with the joint portion of the plurality of ribs arranged in a lattice shape of the shock absorbing means, the impact load concentrated on the joint portion is reduced. The stress can be advantageously reduced as compared to the case where energy is absorbed only by deformation of the shock absorbing means, and as a result, the joint portion of the plurality of ribs of the shock absorbing means may be "teared". Can be effectively prevented.

In addition, in such a shock absorbing structure for a vehicle interior part, as the shock absorbing means deforms,
Since the support is configured to be slid in a direction away from the apex of the corner with respect to a slope extending from the apex of the corner of the body component toward the base side, The post after deformation is positioned in a state sandwiched between the inner surface of the impacted part of the vehicle interior component and the body component, deformation of the shock absorbing means is inhibited, and the deformation state of the post, As soon as the limit is reached, the deformation of the shock absorbing means suddenly stops, and as a result, the amount of deformation of the shock absorbing means (the displacement of the plurality of ribs) is effectively reduced. It can be avoided.

Therefore, according to the shock absorbing structure for a vehicle interior part according to the present invention, the vehicle interior part covering the inner surface of the body component part having a corner part protruding toward the cabin side has a smaller angle. When an impact is applied from the direction facing the part,
A sufficient amount of deformation of the shock absorbing means can be reliably ensured, and its shock energy can be sufficiently absorbed, whereby
Regardless of the direction of impact, excellent shock absorption performance can be demonstrated extremely effectively, and as a result,
In the event of a collision or the like, the safety of the occupant in contact with the vehicle interior parts can be more effectively achieved.

In the shock absorbing structure for an interior part for a vehicle according to the present invention, the shock absorbing means is advantageously fixed to the support by welding. When such a configuration is adopted, without using a special member for fixing the shock absorbing means to the support,
The shock absorbing means can be easily and securely fixed to the body component via the support column, whereby the interior part for a vehicle having a corner protruding toward the passenger compartment side. The shock absorbing structure can be realized very effectively with a simpler configuration.

Further, in the shock absorbing structure for a vehicle interior part according to the present invention, in particular, the body component part is a pillar, and the vehicle interior part is provided on an inner surface of the pillar on the vehicle interior side. When the pillar garnish is to be covered, protection of an occupant in contact with the pillar garnish can be achieved very effectively in the event of a collision or the like.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, in order to clarify the present invention more specifically, the structure of a shock absorbing structure for a vehicle interior part according to the present invention will be described in detail with reference to the drawings. I do.

First, FIG. 1 schematically shows a structure in which a pillar garnish, which is an example of a vehicle interior component having a shock absorbing structure according to the present invention, is disposed in a vehicle cabin. As is clear from FIG. 1, the pillar garnish 10 has a front pillar 1 as a body component.
2 and is located so as to cover the entire inner surface of the front pillar 12 with a rib structure 14 as an impact absorbing means interposed therebetween.

More specifically, the pillar garnish 10
Is made of the same synthetic resin material as that of the related art, as shown in FIGS. 1 and 2, and as a whole, a long rectangular flat plate is placed on one side in the thickness direction so that both ends in the width direction are close to each other. It is configured to be curved and deformed.

In this embodiment, in particular, on the inner surface of the curved shape of the pillar garnish 10, the bias is shifted from the center of the curved portion (the deepest portion of the curved shape) to one side in the width direction of the pillar garnish 10. In this position, a plurality of (four in this case) support portions 16 are integrally erected at a predetermined distance from each other in the longitudinal direction of the pillar garnish 10. The support 16 has a columnar shape having a predetermined height as a whole, and a rod-like projection 18 having a smaller diameter and a shorter length than the support 16 is provided at the center of the distal end surface thereof. And are integrally formed so as to extend in the direction.

On the other hand, a front pillar 12 whose inner surface is covered with a pillar garnish 10 is, as shown in FIG.
As in the prior art, an inner panel 19 and an outer panel 20 that respectively provide an inner part and an outer part that are exposed inside and outside the vehicle interior, and a center panel 22 that is located between the two panels 19, 20, for a total of three. The panels are assembled together. In the front pillar 12, an inner panel 19 that provides an inside portion exposed in the vehicle interior
In addition, for reasons such as strength, a corner portion 24 protruding toward the vehicle interior is formed to extend over the entire length of the inner panel 19.

1 and 3, the rib structure 14 positioned between the pillar garnish 10 and the front pillar 12 is made of a predetermined rubber material or the like as in the prior art. Each has a plurality of horizontal ribs 26 and vertical ribs 28 made of a synthetic resin material such as PP or PE with enhanced ductility. Further, each of the plurality of lateral ribs 26 has a thin flat plate shape, and one side edge in the width direction is formed on the vehicle interior side surface of the inner panel 19 which forms an inner portion of the front pillar 12. Has a curved form corresponding to the curved portion including the corner portion 24, and has an edge portion on the other side in the width direction having a curved shape corresponding to the curved portion on the inner surface of the pillar garnish 10. It is configured. On the other hand, a plurality of vertical ribs 28
Has a thin flat plate shape like the horizontal rib 26, and has a substantially rectangular overall shape. The plurality of horizontal ribs 26 are arranged in a line at predetermined intervals in the direction facing each other, while the plurality of vertical ribs 28 are
The plurality of lateral ribs 26 are arranged between the opposing surfaces so as to interconnect them.

That is, in the rib structure 14, a plurality of horizontal ribs 26 and vertical ribs 28 each made of a thin flat plate made of synthetic resin are integrally assembled in a lattice shape. Thereby, when an impact is applied from the outside, the whole is deformed (crushed), and the impact energy can be effectively absorbed.

In addition, in such a shock absorbing structure 14, three sets of two horizontal ribs 26, 26 arranged opposite to each other are used instead of the vertical ribs 28, respectively. In addition, a mounting plate 30 is provided between the transverse ribs 26, 26 arranged opposite to each other, and furthermore, with respect to the transverse rib 26 located at the end on one side in the longitudinal direction of the rib structure 14. However, the mounting plate 30 is integrally provided so as to extend in one direction in the length direction. Each of the three sets of horizontal ribs 26, 26 and the mounting plate 30 provided at the end of the rib structure 14 has a thickness greater than that of the vertical rib 28, and has a central portion. A through-hole 32 penetrating in the thickness direction is formed in the portion, and is configured.

Then, as described above, the pillar garnish 10 having the above-described structure is used as the front pillar 1.
1 is located over the entire inner surface of the pillar garnish 10, as is apparent from FIG. 1, particularly at the central portion (the deepest portion of the curved shape) of the curved portion of the pillar garnish 10 and the front pillar 12. The vertex portions of the corner portions 24 are directly opposed to each other along the length direction, and the plurality of strut portions 16 provided on the inner surface of the curved portion of the pillar garnish 10 are respectively provided with a front portion. The pillar garnish 10 is arranged in a state in which the pillar garnish 10 is positioned near a position directly opposite to the vertex portion of the corner portion 24 of the pillar 12, and the front pillar 12 is attached to the front pillar 12 by an attachment portion (not shown). It is mounted in a fixed position in the same state as in the prior art.

On the other hand, the rib structure 14 interposed between the pillar garnish 10 and the front pillar 12 having such an arrangement is configured such that one lateral edge of each lateral rib 26 in the width direction is a front pillar. A state in which the inner panel 19 that forms the inner part of the inner panel 19 is in close contact with the curved part including the corner 24, and the other side edge in the width direction is in close contact with the curved part on the inner surface of the pillar garnish 10. , Extending along the longitudinal direction of the front pillars 12 and the pillar garnish 10, and
The second corner 24 is disposed so as to cover the entire corner 24. In such a rib structure 14, the three sets of lateral ribs 26, 26
And the respective pillar portions of the pillar garnish 10 in the respective through holes 32 of the mounting plate 30 formed integrally with the horizontal rib 26 located at the end of the rib structure 14 at one end in the longitudinal direction. Sixteen bar-shaped projections 18 are inserted through each of them, and they are heated and melted so that each mounting plate 3
By forming the welded portion 34 that is welded to zero, it is immovably fixed to the pillar garnish 10 via each of the columns 16. In addition, in FIG.
And 38 are urethane adhesives for bonding the windshield and the front pillar 12 to the front window glass;
Is a door opening trim.

Thus, in the pillar garnish 10 having such a structure and disposed in the interior of the vehicle, the direction in which the front pillar 12 faces the corner 24 (see FIG. 4).
And the direction of the arrow in FIG. 5), that is, when an impact is applied from the direction in which the occupant is most likely to come into contact with the vehicle in the event of a collision or the like, first, FIG. As described above, the curved portion of the pillar garnish 10 is brought closer to the corner portion 24 of the front pillar 12 by a predetermined size, and accordingly, is immovably fixed between the pillar garnish 10 and the front pillar 12. The rib structure 14 is crushed and deformed with a deformation amount corresponding to the amount of the curved portion of the pillar garnish 10 approaching the corner portion 24 of the front pillar 12, and an initial stage of such deformation of the rib structure 14 is performed. In this case, the pillars 16 provided on the inner surface of the curved portion of the rib structure 14 are also brought into contact with the corners 24 of the front pillar 12 and are bent. Want manner, crushed by a predetermined amount, and thus be deformed.

As the impact load caused by the contact of the occupant with the pillar garnish 10 is increased, as shown in FIG. 5, the front pillar 12 is deformed so that the curved portion of the pillar garnish 10 is pushed open. Is further approached toward the apex portion of the corner 24 of the pillar garnish, and accordingly, each pillar 16 of the pillar garnish is hardly deformed and remains deformed at the stage of the small impact load. The inner panel 19 of the front pillar 12
The rib structure 14 is slid in a direction away from the apex portion of the corner 24 along a slope extending from the apex portion of the corner 24 formed to a part of the corner portion toward the base side thereof. The bent portion of the pillar garnish 10 is further crushed and deformed by an amount of deformation corresponding to the amount of approach to the corner 14 of the front pillar 12.

As described above, in this specific example, when an impact is applied to the pillar garnish 10 from the direction facing the corner portion 24 of the front pillar 12, the rib structure 14 is deformed. In addition, such a rib structure 1
In the initial stage of the deformation of 4, the pillar garnish 10
Of the rib structure 14, the impact energy at the initial stage of deformation of the rib structure 14 is reduced by the rib structure 14 and the pillar garnish 12.
Can be advantageously absorbed by the respective deformation of each of the struts 16 of the rib structure 14 against the impact load concentrated on the joint portion between the horizontal rib 26 and the vertical rib 28 of the rib structure 14 which abuts on the corner 24 of the front pillar 12. The stress can advantageously be reduced, so that the joint between the lateral rib 26 and the longitudinal rib 28 of such a rib structure 14 can be effectively prevented from "tearing". . Also,
Since the rib structure 14 is immovably fixed between the pillar garnish 10 and the front pillar 12, when the impact is applied from the impact direction as described above,
It is also possible to prevent the rib structure 14 from "sliding through" from between the impacted portion of the pillar garnish 10 and a portion of the front pillar 12 facing the impacted portion of the pillar garnish. It is.

Moreover, in this embodiment, as the impact load due to the contact of the occupant with the pillar garnish 10 increases, the rib structure 14 is further deformed, while each pillar 16 of the pillar garnish 10 is almost deformed. Without being squeezed, the front pillar 12 is slid in a direction away from the apex of the corner 24 along a slope extending from the apex of the corner 24 toward the base thereof. However, when the rib structure 14 is further deformed, the pillar garnish 1
0 of the rib structure 14 is positioned between the impacted portion of the pillar garnish 10 and a portion of the front pillar 12 facing the impacted portion of the pillar garnish 10. It can be avoided that it hinders the deformation,
At the same time as the deformation state of each pillar 16 reaches the limit, the deformation of the rib structure 14 suddenly stops, and due to that, the deformation amount of the rib structure 14 decreases. It can be effectively blocked.

Therefore, according to the shock absorbing structure of the pillar garnish 10 according to this embodiment, the pillar garnish 1
With respect to 0, when an impact is applied from the direction opposite to the corner portion 24 of the front pillar 12, a sufficient amount of deformation of the rib structure 14 can be reliably ensured, and the impact energy can be sufficiently absorbed. Therefore, excellent shock absorption performance can be effectively exhibited regardless of the direction of impact. As a result, protection of the occupant in contact with the pillar garnish 12 can be achieved very effectively in the event of a collision or the like.

In this embodiment, the rib structure 1
4 are welded to the pillars 16 of the pillar garnish 10 and fixed to the pillar garnish 10 in the plurality of mounting plates 30 integrally formed with the rib structure 14. No special members are required to fix the rib structure 14 to the pillar garnish 10 immovably with respect to the pillar garnish 10, and accordingly, the mounting structure of the rib structure 14 to the pillar garnish 10, and hence the impact of the pillar garnish 10 This has the advantage that the absorbing structure itself can be configured with a relatively simple structure.

In the specific example, the plurality of pillars 16 formed integrally with the pillar garnish 12 as vehicle interior parts have a cylindrical shape. However, the shape of the pillars 16 is as follows. The present invention is not limited to this, and any structure may be used as long as it can fix and support the rib structure 14 as the shock absorbing means and can be deformed together with the rib structure 14 by an external impact. Shape can also be advantageously employed.

Further, the number of such pillars 16 arranged on the pillar garnish 12 is, of course, not limited to the one shown in the above embodiment.

Further, the arrangement position of the support portion 16 with respect to the pillar garnish 12 is not limited to the one shown in the above-described embodiment, and as described above,
When an impact is applied to the pillar garnish 10, each pillar 16 is deformed by a predetermined amount in the initial stage of deformation of the rib structure 14, and the pillar structure 16 is deformed by a predetermined amount.
Along with the further deformation of the front pillar 12, along the slope extending from the apex portion of the corner portion 24 of the front pillar 12 toward the base side thereof, in a direction away from the apex portion of the corner portion 24, with little deformation. The position is not strictly specified as long as the position can be slid. Specifically, for example, the support portion 16 can satisfy the above-described conditions, as shown in FIG.
It is desirable to be disposed on the pillar garnish 12 within a range from the position indicated by the solid line (16) to the position indicated by the virtual line A.

Further, in the specific example, a plurality of mounting plates 30 are provided on the rib structure 14 as the shock absorbing means, and each of the columns 16 is welded to the plurality of mounting plates 30. Although the rib structure 14 is fixed to each column 16, each column 16 of the rib structure 14 is fixed.
The fixing structure for the support plate 16 is not limited to this, and for example, for each mounting portion 16
A conventionally known fixing structure, such as bonding with an adhesive or fixing with a bolt, may be employed. Further, each pillar 16 may be connected to the rib structure without such a mounting plate 30. It is also possible to fix directly to 14.

Further, the shape of the rib structure 14 serving as the shock absorbing means is not limited to the one shown in the above-mentioned embodiment, and a plurality of flat ribs are combined in a lattice shape. As long as it is configured, it can be appropriately changed depending on the shape and size of the applied vehicle interior parts.

In addition, in the above specific examples, the specific examples in which the present invention is applied to the impact absorbing structure of the pillar garnish disposed so as to cover the inner surface of the front pillar have been described. Various pillars such as quarter pillars, and body components other than such pillars, cover the inner surface of the vehicle component side including the corners of the body components having the corners protruding toward the vehicle compartment side. It is needless to say that the present invention can be advantageously applied to any of the shock absorbing structures of the automobile and the interior parts for vehicles other than the automobile.

Although the specific configuration of the present invention has been described in detail above, it goes without saying that the present invention is not subject to any restrictions due to such description. Further, in addition to the specific examples described above, various changes, modifications, improvements, etc. based on the knowledge of those skilled in the art can be made to the present invention without departing from the spirit of the present invention. It should be understood.

[0037]

As is apparent from the above description, in the shock absorbing structure for an interior part for a vehicle according to the present invention, the inner surface of the body component having a corner protruding toward the cabin side is formed. When an impact is applied to the covering vehicle interior component from a direction facing the corner, a sufficient amount of deformation of the impact absorbing means can be ensured, and the impact energy can be sufficiently absorbed. Thereby, regardless of the direction of impact, excellent impact absorption performance can be extremely effectively exhibited, and as a result, in the event of a collision accident, etc., the occupant contacting the vehicle interior parts Safety can be achieved even more effectively.

[Brief description of the drawings]

FIG. 1 is a cross-sectional explanatory view showing an example of a vehicle interior component having a shock absorbing structure according to the present invention, showing a state in which such a vehicle interior component is arranged in a vehicle.

FIG. 2 is an explanatory perspective view of the vehicle interior component shown in FIG. 1;

FIG. 3 is a perspective explanatory view showing an example of a shock absorbing means arranged between the vehicle interior component shown in FIG. 1 and a body component that covers the interior surface on the vehicle interior side;

FIG. 4 is an explanatory view showing a deformation process of the vehicle interior component and the shock absorbing means when an impact is applied to the vehicle interior component shown in FIG. 1, in an initial stage thereof; Is shown.

FIG. 5 is an explanatory diagram showing a deformation process of the vehicle interior component and the shock absorbing means when an impact is applied to the vehicle interior component shown in FIG. Is shown.

[Explanation of symbols]

Reference Signs List 10 pillar garnish 12 front pillar 14 rib structure 16 support portion 24 corner portion 26 horizontal rib 28 vertical rib 34 welded portion

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuhiro Kawamoto 3-30 Shimoichimachi, Toyota City, Aichi Prefecture Inside Kojima Press Industry Co., Ltd. (72) Inventor Kazufumi Mori 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor (72) Inventor Eiji Hibi 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Corporation (56) References JP-A-9-24784 (JP, A) JP-A-9-175297 (JP) JP-A-8-127298 (JP, A) JP-A-7-277117 (JP, A) JP-A-8-282411 (JP, A) JP-A-10-59101 (JP, A) 8-175282 (JP, A) JP-A-7-246952 (JP, A) JP-A-9-240383 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60R 21/02 -21/04 B60R 13/02 B62D 25/04

Claims (3)

(57) [Claims] 1. A body component that forms a part of a body of a vehicle and has a corner that is convex toward a vehicle compartment side of the vehicle, and a vehicle compartment side including the corner of the body component. A plurality of flat ribs are arranged in a lattice form between the vehicle interior parts arranged so as to cover the inner surface of the vehicle and the shock absorbing means is arranged. A shock absorbing structure of the vehicle interior component capable of absorbing the shock of the vehicle interior component, wherein the vehicle interior component faces the body component directly opposite to the vertex portion of the corner of the vehicle component. In the vicinity of the position, a column protruding toward the body component is integrally provided to fix and support the shock absorbing means with respect to the column, while the column supports the impact due to the external shock. The first deformation of the absorbing means In the step, while being brought into contact with the body component and deformed, and along with further deformation of the shock absorbing means, the slope extending from the apex portion of the corner portion of the body component toward the base side portion is formed. On the other hand, an impact absorbing structure for an interior part for a vehicle, wherein the impact absorbing structure is configured to be slidable in a direction away from an apex of the corner. 2. The shock absorbing structure for a vehicle interior part according to claim 1, wherein said shock absorbing means is welded and fixed to said column. 3. The vehicle interior component according to claim 1, wherein the body component is a pillar, and the vehicle interior component is a pillar garnish that covers an interior surface of the pillar on the vehicle interior side. Shock absorbing structure.