JP2005219558A - Shock absorber - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shock absorber capable of effectively reducing a load which an occupant receives. <P>SOLUTION: The shock absorber is equipped with substrates 12 forming many empty spaces 11 passing through from the inside of a cabin outward and cushion bodies 13 fitting so as to project to the inside of the cabin on the respective empty spaces 11, and the fitting of these substrates 12 and the cushion bodies 13 is set so that the cushion bodies 13 begin to sink in the empty spaces 11 when an impulse force toward the outside of the cabin is acted. When the occupant is hit on an interior member by a collide or a rolling of a vehicle, and the respective cushion bodies 13 start to sink in the empty spaces 11 at a rate according to the distribution of the impulse force, abrasion resistance becomes large by increasing sliding area of the cushion bodies 13 relative to the substrates 12 and the deformation of the cushion bodies 13 is suppressed to effectively reduce the load that the occupant receives. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an impact absorbing material interposed between a body shell and an interior material.

  In recent years, shock absorbers have been interposed between roof shells, pillars, and door panels, which are components of body shells, and interior materials such as linings and garnishes that cover them. It has been proposed to reduce the load received by deformation of the shock absorber (see, for example, Patent Document 1).

  FIG. 12 shows an energy absorbing member of Patent Document 1, in which one absorbing member 2 in which a large number of cylindrical protrusions 1 facing toward the interior of the vehicle are formed, and a convex portion 3 that fits the protrusion 1 is formed. The other absorption member 4 opposite to the absorption member 2 is provided and disposed between the pillar 5 and the garnish 6 covering the pillar 5.

  One absorbing member 2 is attached to an inner panel 7 constituting the pillar 5, and there is a gap between the other absorbing member 4 and the garnish 6.

In this energy absorbing member, when the occupant hits the garnish 6 and the absorbing member 4 is pushed outward through the garnish 6, the load received by the occupant is caused by plastic deformation of the protrusion 1 and the convex portion 3. Is reduced.
JP-A-10-29470

  However, in the case shown in FIG. 12, it is assumed that the load received when the passenger hits the garnish 6 cannot be sufficiently suppressed only by the deformation of the protrusion 1 and the protrusion 3.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide an impact absorbing material that can effectively reduce a load received when a passenger collides.

  In order to achieve the above-mentioned object, the invention according to claim 1 is a base material in which a large number of cavities are formed to open to the outside of the vehicle interior, and the base material is projected to the vehicle interior side for each of the cavities. The shock absorber is embedded in the space when an impact force directed toward the outside of the passenger compartment acts on the shock absorber.

  According to the second aspect of the present invention, a space that penetrates outward from the vehicle interior side is formed in the base material, and a buffer is fitted into each of the spaces so as to protrude toward the vehicle interior side. An engaging portion is provided between the base material and the buffer body that can be broken when an impact force directed toward the side acts on the buffer body.

  According to a third aspect of the present invention, a space that penetrates outward from the vehicle interior side is formed in the base material, and a buffer is fitted into each of the spaces so as to protrude toward the vehicle interior side. An adhesive portion that can be broken when an impact force directed toward the side acts on the buffer body is provided between the base material and the buffer body.

  According to a fourth aspect of the present invention, the base material and the buffer body are integrally formed so that the buffer body can be separated from the base material when the impact force toward the outside of the passenger compartment acts on the buffer body.

  In the invention described in claim 5, the inner peripheral cross section of the void is formed into a shape with concavities and convexities, and the outer peripheral cross section of the buffer is formed into a shape that fits into the void.

  In the first aspect of the present invention, when each buffer body starts to sink into the void at a rate corresponding to the distribution of impact force, the sliding area of the buffer body with respect to the base material increases, and the frictional resistance increases. Suppress body displacement.

  In the invention described in claim 2, the engaging portion between the buffer body on which the impact force is applied and the base material is broken, and the buffer body starts to sink into the void.

  In the invention described in claim 3, the bonded portion between the buffer body to which the impact force is applied and the base material is broken, and the buffer body starts to sink into the void.

  According to the fourth aspect of the present invention, the shock absorber on which the impact force is applied separates from the base material and starts to sink into the void.

  In the invention according to claim 5, the shape of the inner peripheral cross section of the void and the outer peripheral cross section of the shock absorber is set so that the concavities and convexities are continuous and fit to each other, and the slide when the shock absorber is recessed into the void is formed. Increase the moving area.

  (1) In the first aspect of the invention, since the frictional resistance acting on each buffering body increases when the buffering body starts to sink into the void of the base material, the load received when the passenger collides is effective. Can be reduced.

  (2) In the invention according to claim 2, since the engaging portion that can be broken when the impact force is applied is provided between the base material and the shock absorber, the initial energy when the passenger collides is effective. Can be absorbed.

  (3) In the invention described in claim 3, since an adhesive portion that can be broken when an impact force is applied is provided between the base material and the buffer body, the initial energy when the passenger collides is effective. Can be absorbed into.

  (4) In the invention described in claim 4, since the base material and the buffer body are integrally formed so that the buffer body can be separated when an impact force is applied, the initial energy when the passenger collides is effective. Can be absorbed.

  (5) In the invention according to claim 5, since the sliding area of the buffer body is expanded by connecting the concave and convex shapes of the inner peripheral cross section of the void and the outer peripheral cross section of the buffer body, the passenger collides. The load received sometimes can be reduced more effectively.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 and FIG. 2 show a basic structure of an example of an embodiment of the shock absorbing material of the present invention, and a base material 12 having a large number of voids 11 having a circular cross section penetrating from the vehicle interior side to the outside. And a short cylindrical shock absorber 13 fitted in each of the voids 11 so as to protrude toward the vehicle interior side, and the components of the body shell 14 such as a roof panel, a pillar, and a door panel and the like. The base material 12, the buffer body 13 and the interior material 15 are made of a polymer material as a material.

  The base material 12 is attached to a vehicle interior surface portion of the body shell 14, and there is a gap between the shock absorber 13 and the interior material 15.

  The fitting of the buffer body 13 to the base material 12 is set so that the buffer body 13 starts to sink into the space 11 when an impact force toward the outside of the passenger compartment acts on the buffer body 13.

  This requirement can be achieved by managing the clearance and surface roughness between the void 11 and the buffer 13 or selecting a material.

  When a passenger collides with the interior material 15 due to a vehicle collision or rollover, and each buffer body 13 starts to sink into the void 11 at a rate corresponding to the distribution of the impact force, the sliding area of the buffer body 13 with respect to the base material 12 is increased. Increase to increase frictional resistance.

  Thereby, the displacement of the buffer 13 is suppressed, and the load received by the passenger can be effectively reduced.

  As shown in FIG. 3, the base material 12 has a curved shape according to the body shell 14 and the interior material 15.

  Here, the base material 12 exhibits a convex curved surface toward the vehicle interior, but the base material 12 may exhibit a concave curved surface toward the vehicle interior.

  4 to 6 show examples in which engaging portions 16, 17, and 18 are provided between the base material 12 and the buffer body 13, and FIGS. 7 and 8 show adhesive portions 19 and 20 between the base material 12 and the buffer body 13, respectively. In this example, the same reference numerals as those in FIGS. 1 to 3 denote the same components.

  In FIG. 4, the engagement portion 16 is provided integrally with the base material 12 so as to abut the end surface of the buffer body 13 near the body shell 14 in the space 11, and the buffer body 13 is mounted in the vehicle interior by the engagement portion 16. It is held in a state protruding to the side.

  In FIG. 5, a recess 21 is formed on the inner surface of the cavity 11, and an engagement portion 17 is formed on a portion closer to the body shell 14 of the buffer 13 so as to be fitted into the recess 21 by elastic deformation of a polymer material. Provided, the buffer 13 is held by the engaging portion 17 so as to protrude toward the vehicle interior side.

  In FIG. 6, the engaging portion 18 is integrally provided at an intermediate portion in the axial direction of the buffer body 13 so as to contact the surface of the base material 12 facing the interior material 15 side. Is kept protruding toward the vehicle interior side.

  In FIG. 7, an adhesive portion 19 that joins the surface of the base material 12 facing the interior material 15 side and the outer peripheral surface of the buffer body 13 is provided, and the buffer body 13 is held in a state of protruding toward the vehicle interior side. ing.

  In FIG. 8, an adhesive portion 20 is provided to bond the inner peripheral surface of the void 11 and the end surface near the body shell 14 of the buffer body 13, and the buffer body 13 is held in a state of protruding toward the vehicle interior side. Yes.

  The strengths of the engaging portions 16, 17, 18 and the bonding portions 19, 20 are set so that they can be broken when an impact force toward the outside of the passenger compartment acts on the shock absorber 13.

  That is, when the passenger hits the interior material 15 and urges the shock absorber 13 toward the outside of the passenger compartment, the engaging portions 16, 17, 18 between the shock absorber 13 and the base material 12 on which the impact force is applied, Alternatively, the bonded portions 19 and 20 break and effectively absorb the initial energy of the collision.

  Next, as described above, the shock absorber 13 starts to sink into the space 11 to reduce the load received by the passenger.

  Further, the engaging portions 16, 17, 18 and the adhesive portions 19, 20 may be provided in combination between the base material 12 and the buffer body 13.

  The shock absorbing material shown in FIG. 9 is formed in a short columnar shape so that each of the voids 22 protrudes toward the vehicle interior side on a base material 23 formed with a large number of voids 22 having a circular cross section that opens to the vehicle exterior side. The buffer body 24 is integrally formed.

  The base material 23 is attached to a vehicle interior surface portion of the body shell 14, and there is a gap between the buffer body 24 and the interior material 15.

  A polymer material is used for the base material 23 and the buffer body 24, and the strength of the connecting portion interposed between the base material 23 and the buffer body 24 is such that the impact force toward the outside of the passenger compartment is applied to the buffer body 13. It is set so that it can break when it acts.

  That is, when the passenger hits the interior material 15 and urges the shock absorber 24 toward the outside of the passenger compartment, the connecting portion between the shock absorber 24 and the base material 23 on which the impact force is applied breaks, and the initial stage of the collision Absorb energy effectively.

  Next, as described above, the shock absorber 13 starts to sink into the space 11 to reduce the load received by the passenger.

  The shock absorbing material shown in FIGS. 10 and 11 has a base material 26 formed with a number of cavities 25 penetrating from the vehicle interior side to the outer side, and protrudes toward the vehicle interior side in each of the cavities 25. And a buffer body 27 fitted in the.

  The inner circumferential cross section of the void 25 viewed in the thickness direction of the base material 26 exhibits a contour shape of a corolla, and the outer circumferential cross section of the buffer body 27 has a shape that fits into the void space 25. 27 is made of a polymer material.

  The base material 26 is attached to the interior surface portion of the body shell 14, and there is a gap between the buffer body 27 and the interior material 15.

  The fitting of the buffer body 27 to the base material 26 is set so that the buffer body 27 starts to be fitted into the space 25 when an impact force directed toward the outside of the passenger compartment acts on the buffer body 27.

  This requirement can be achieved by controlling the clearance and surface roughness between the void 25 and the buffer 27, selecting the circumference of the void 25 and the buffer 27 depending on the number of irregularities, or selecting the material.

  When a passenger collides with the interior material 15 due to a vehicle collision or rollover, and the shock absorber 27 begins to sink into the void 25 in accordance with the impact force, the sliding area of the shock absorber 27 with respect to the base material 26 increases, resulting in frictional resistance. Becomes larger.

  As a result, the displacement of the buffer body 27 is suppressed, and the load received by the passenger can be effectively reduced.

  Further, the inner circumferential section of the void 25 and the outer circumferential section of the buffer body 27 may be not only the bent surface shape shown in FIG. 11 but also a shape in which convex curved surfaces and concave curved surfaces are alternately arranged.

  Furthermore, if the engaging portions 16, 17, 18 (see FIGS. 4 to 6) and the adhesive portions 19, 20 (FIGS. 7 and 8) are provided between the base material 26 and the buffer body 27, the passenger Can effectively absorb the initial energy when it hits the interior material 15.

  In addition, the impact-absorbing material of the present invention is not limited to the above-described embodiment, and it is needless to say that changes can be made without departing from the gist of the present invention.

  The shock absorbing material of the present invention can be applied to various vehicle types.

It is a fragmentary perspective view which shows the basic structure of an example of embodiment of the shock absorber of this invention. It is a fragmentary longitudinal cross-section which shows the displacement of the buffer body relevant to FIG. It is a fragmentary longitudinal cross-section which shows the impact-absorbing material which has the curved base material. It is a fragmentary sectional view which shows an example which provided the engaging part between the base material and the buffer body. It is a fragmentary sectional view which shows the other example which provided the engaging part between the base material and the buffer body. It is a fragmentary sectional view which shows another example which provided the engaging part between the base material and the buffer body. It is a fragmentary sectional view showing an example which provided an adhesion part between a substrate and a buffer. It is a fragmentary sectional view which shows the other example which provided the adhesion part between the base material and the buffer body. It is a fragmentary sectional view which shows the impact-absorbing material which integrally formed the base material and the buffer. It is a fragmentary sectional view which shows the impact-absorbing material which made the uneven | corrugated shape the inner peripheral cross section of a void | space, and the outer peripheral cross section of a buffer. It is a XI-XI arrow line view of FIG. It is a horizontal sectional view showing a conventional energy absorbing member.

Explanation of symbols

11, 22, 25 Cavity 12, 23, 26 Base material 13, 24, 27 Buffer 16, 17, 18 Engagement part 19, 20 Adhesion part

Claims (5)

  A base material having a large number of voids that open to the outside of the passenger compartment, and a shock absorber incorporated in the base material so as to protrude toward the inner compartment of the vehicle for each of the empty spaces, and an impact toward the outer side of the passenger compartment A shock absorber that allows the shock absorber to sink into the void when force is applied to the shock absorber.   A space penetrating from the vehicle interior side to the exterior is formed in the base material, and a buffer body is fitted into each of the spaces so as to protrude toward the vehicle interior side, and the impact force toward the vehicle exterior side is buffered. The shock absorbing material according to claim 1, wherein an engagement portion that can be broken when acting on the base material is provided between the base material and the shock absorber.   A space penetrating from the vehicle interior side to the exterior is formed in the base material, and a buffer body is fitted into each of the spaces so as to protrude toward the vehicle interior side, and the impact force toward the vehicle exterior side is buffered. The shock-absorbing material according to claim 1, wherein an adhesive portion that can be broken when acting on the base material is provided between the base material and the buffer body.   The shock absorber according to claim 1, wherein the base material and the buffer body are integrally formed so that the buffer body can be separated from the base material when an impact force directed toward the vehicle exterior side acts on the buffer body.   The shock absorbing material according to claim 1, wherein the inner circumferential cross section of the void is formed into a shape in which irregularities are continuous and the outer circumferential cross section of the buffer body is fitted into the void.

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