JP6202340B2 - Shock absorption structure for vehicle door - Google Patents

Description

  The present invention relates to a shock absorbing structure for a vehicle door.

  Conventionally, as an impact absorbing structure for absorbing an impact at the time of a side collision in a vehicle, there is one described in Patent Document 1 below. In Patent Document 1, an impact absorbing member (impact absorber), which is a hollow box body, is provided on the door trim. Such an impact absorbing member is arranged to face the occupant and is configured to absorb an impact applied to the occupant by being deformed at the time of a side collision.

JP 2007-55549 A

  Incidentally, the shock absorbing member of Patent Document 1 has a rectangular box shape when viewed from the inside of the vehicle interior, and the cross-sectional shape of the shock absorbing member cut along the outside of the vehicle interior is a vehicle. It is different at each position in the front-rear direction. For this reason, when the seating position of the occupant in the vehicle front-rear direction changes, the relative position of the occupant in the vehicle front-rear direction with respect to the shock absorbing member changes, and the shock absorbing performance changes.

  Further, in the impact absorbing member which is a hollow box body, as the deformation at the time of the side collision progresses, it is easily buckled, and the reaction force against the load at the time of the side collision decreases, resulting in a decrease in energy absorption performance. A situation is possible.

  The present invention has been completed based on the above circumstances, and can exhibit the same shock absorbing performance regardless of the seating position of the occupant in the vehicle front-rear direction, and also can absorb the energy at the time of a side collision. An object of the present invention is to provide a shock absorbing structure for a vehicle door that can suppress a situation in which the pressure drops.

  The present invention relates to a shock absorbing structure for a vehicle door, wherein the vehicle door includes a door panel, a door trim disposed on a vehicle interior side of the door panel, and an impact disposed between the door panel and the door trim. A shock absorbing member main body having a shape extending in the vehicle front-rear direction and a cross-sectional shape cut along the vehicle interior-exterior direction that is the same over the entire length in the vehicle front-rear direction. The shock absorbing member main body portion includes a panel-side facing wall portion disposed to face a vehicle interior side surface of the door panel, and a door trim side facing wall portion disposed to face a vehicle exterior side surface of the door trim. And a connecting wall portion connecting the panel side facing wall portion and the door trim side facing wall portion, and extending from the panel side facing wall portion to the door trim side. And an extended wall portion disposed opposite to the connecting wall portion, and the connecting wall portion has a shape that bulges toward the extended wall portion, and the connecting wall portion or the extended wall portion is provided. One of the wall portions is provided with a restricting portion having a shape protruding to the other, and the restricting portion is configured such that the connecting wall portion is seated by pressing the panel-side facing wall portion from the outside of the passenger compartment. In the case of bending, it is characterized in that it is configured to restrict buckling of the connecting wall portion by contacting the other.

  In the present invention, the impact absorbing member main body has the same cross-sectional shape cut along the vehicle interior and exterior direction over the entire length in the vehicle longitudinal direction. Thereby, even when the position of the occupant with respect to the shock absorbing member is displaced in the vehicle front-rear direction, the same shock absorbing performance can be exhibited.

  Further, in the present invention, the connecting wall portion has a shape that bulges toward the extending wall portion side, and is likely to buckle as compared with a case where the connecting wall portion has a linear shape extending outward in the vehicle interior. For this reason, at the time of a side collision of the vehicle, when the panel side facing wall portion is pressed from the outside of the passenger compartment, the connecting wall portion easily buckles. Thereby, the initial load which acts on a passenger | crew at the time of a side collision can be reduced.

  Then, when the space | interval of a connection wall part and an extending wall part becomes small with buckling of a connection wall part, the control part provided in one side of a connection wall part or an extended wall part contact | abuts the other. After this, buckling of the connecting wall is restricted. Thereby, the situation where a connecting wall part and an extension wall part deform | transform easily can be suppressed, and the situation where the energy absorption performance of an impact-absorbing member falls and the situation where the acceleration added to a passenger | crew changes can be suppressed.

  The restricting portion includes a protruding wall portion protruding from the one to the other, and a tip wall portion provided at a protruding end of the protruding wall portion and having a facing surface facing the other. be able to.

  By providing the tip wall portion having the facing surface, the facing surface can be more reliably brought into contact with the other. Thereby, buckling of a connection wall part can be controlled more reliably.

  The panel-side facing wall portion, the connecting wall portion, the extending wall portion, and the restricting portion are provided in pairs so as to be vertically symmetric with respect to an axis extending in the vehicle interior and exterior direction. Can be.

  The vehicle door trim includes a plate-like trim main body portion, and a holding portion provided on the outer surface of the trim main body portion, and the holding portion is opened to the outer side of the vehicle cabin. It has a recessed part, The said door trim side opposing wall part shall be accommodated in the said recessed part.

  By accommodating the door trim side facing wall portion in the recess, the impact absorbing member can be more reliably positioned with respect to the trim main body portion.

  ADVANTAGE OF THE INVENTION According to this invention, while being able to exhibit the same impact absorption performance irrespective of the seating position of the passenger | crew in the vehicle front-back direction, it is for vehicles which can suppress the situation where the energy absorption performance at the time of a side collision falls. A shock absorbing structure for the door can be provided.

The front view which shows the door trim which concerns on Embodiment 1 of this invention. Sectional drawing which shows the impact-absorbing structure which concerns on Embodiment 1 (corresponding to the figure cut | disconnected by the II-II line | wire of FIG. 1) Sectional drawing which shows the effect | action of the impact-absorbing member at the time of a side collision View of the lower board as seen from outside the passenger compartment Perspective view showing impact absorbing member Graph showing FS characteristics of shock absorbing member Front view showing a state in which the seating position of the occupant is displaced with respect to the shock absorbing member Sectional drawing which shows the impact-absorbing structure which concerns on Embodiment 2. Sectional drawing which shows the impact-absorbing structure which concerns on Embodiment 3. Sectional drawing which shows the impact-absorbing structure which concerns on Embodiment 4. Sectional drawing which shows the impact-absorbing structure which concerns on Embodiment 5. Sectional drawing which shows the impact-absorbing structure which concerns on Embodiment 6. Sectional drawing which shows the impact-absorbing structure which concerns on Embodiment 7. Sectional drawing which shows the impact-absorbing structure which concerns on Embodiment 8.

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a front view showing a door trim 20 constituting the vehicle door 10 of the present embodiment. The vehicle door 10 is a side door located on the side of a seat arranged in the vehicle. As shown in FIG. 2, the vehicle door 10 is disposed between the door panel 11, the door trim 20 disposed on the vehicle interior side of the door panel 11, and the door panel 11 and the door trim 20 (more specifically, the lower board 23). And an impact absorbing member 40.

  The door panel 11 is comprised from the inner panel 12 and the outer panel (not shown), for example, is comprised by pressing metal plate materials, such as iron and aluminum. The inner panel 12 is disposed opposite to the vehicle interior side of the outer panel.

  As shown in FIG. 1, the door trim 20 is mainly composed of a trim board 21 (a trim body having a plate shape). The trim board 21 is made of a synthetic resin material such as polypropylene. In addition, the material of the trim board 21 is not limited to a synthetic resin material, For example, you may use what mixed wood type material and synthetic resin.

  As shown in FIG. 1, the trim board 21 is divided into an upper board 22 that forms the upper part of the trim board 21 and a lower board 23 that forms the lower part of the trim board 21. The upper board 22 is provided with an armrest portion 24, an inside handle 25, and the like that extend in the vehicle front-rear direction. The lower board 23 is provided with a speaker grill 26, a door pocket 27, and the like.

  Next, the shock absorbing structure of the vehicle door 10 will be described. The impact absorbing member 40 is made of, for example, a synthetic resin (for example, a polypropylene resin). The material of the shock absorbing member 40 can be changed as appropriate.

  The shock absorbing member 40 includes a shock absorbing member main body 41 (see FIG. 5). As shown in FIG. 1, the shock absorbing member main body 41 has a longitudinal shape extending in the vehicle front-rear direction. As shown in FIG. 5, the shock absorbing member main body 41 has the same cross-sectional shape (the shape in the cross-sectional view in FIG. 2) cut along the vehicle interior / exterior direction over the entire length in the vehicle front-rear direction. Is done.

  At the upper end and the lower end of the shock absorbing member main body 41, attachment pieces 42, 42 are formed at the ends on the vehicle interior side, respectively. The attachment piece 42 has a plate shape extending in the vehicle front-rear direction. As shown in FIG. 5, a plurality of through holes 42 </ b> A are formed in the mounting piece 42 in the vehicle front-rear direction.

  A mounting boss 28 is formed on the outer surface 23A (back surface) of the lower board 23 corresponding to the through hole 42A. As shown in FIG. 2, the mounting boss 28 is inserted into the through hole 42 </ b> A from the vehicle interior side, and then welded (thermally caulked) by a welding means such as ultrasonic welding to attach the tip of the mounting boss 28. 42 is fastened. The lower board 23 is parallel to the inner panel 12.

  The shock absorbing member main body 41 is composed of a plurality of wall portions extending in the vehicle front-rear direction. Specifically, the shock absorbing member main body 41 includes a panel side facing wall portion 50, a door trim side facing wall portion 55, a connecting wall portion 60, an extending wall portion 65, and a regulating wall portion 70. ing.

  As shown in FIG. 2, each of the panel-side facing wall portion 50, the connecting wall portion 60, and the extending wall portion 65 has an axis L <b> 1 that extends along the vehicle interior / exterior direction (vehicle width direction, left-right direction in FIG. 2). Are arranged symmetrically with respect to the axis of symmetry. That is, the shock absorbing member main body 41 has a vertically symmetrical shape as shown in FIG.

  The panel-side facing wall portion 50 constitutes a wall portion on the vehicle exterior side of the shock absorbing member 40, and is disposed to face the surface 12 </ b> A on the vehicle interior side of the inner panel 12.

  The door trim side facing wall portion 55 constitutes a wall portion on the vehicle interior side in the shock absorbing member 40, and is disposed to face the surface 23 </ b> A on the vehicle exterior side of the lower board 23. The door trim side facing wall portion 55 connects end portions on the vehicle interior side of the pair of connecting wall portions 60, 60 arranged to face each other.

  In addition, a holding portion 29 that holds the door trim side facing wall portion 55 is formed at a location corresponding to the door trim side facing wall portion 55 on the surface 23A on the outer side of the passenger compartment of the lower board 23. The holding | maintenance part 29 is comprised by the some rib which makes a grid | lattice form. Specifically, as shown in FIG. 4, the holding portion 29 is configured by four ribs 29 </ b> B extending in the vehicle front-rear direction (left-right direction in FIG. 4) and two ribs 29 </ b> D extending in the up-down direction. And a recess 29A that is open to the outside of the passenger compartment.

  The recess 29A extends in the vehicle front-rear direction. As shown in FIG. 2, the door trim side facing wall portion 55 is accommodated in the recess 29A. Thereby, the door trim side opposing wall part 55 is hold | maintained in the recessed part 29A. Further, the door trim side facing wall portion 55 is in contact with the bottom surface of the recess 29A (the surface 23A on the outside of the passenger compartment).

  The connecting wall 60 extends in the vehicle interior and exterior direction, and connects the panel-side facing wall 50 and the door-trim-side facing wall 55 at their ends. The pair of connecting wall portions 60, 60 and the door trim side facing wall portion 55 constitute a recess 43 that is opened to the outside of the vehicle compartment.

  The extension wall 65 extends from the end of the panel-side facing wall 50 where the connecting wall 60 is not connected to the door trim 20 side. The extending wall portion 65 is disposed to face the connecting wall portion 60 and is inclined so as to move away from the connecting wall portion 60 toward the vehicle interior side.

  In addition, each of a pair of extended wall parts 65 and 65 shall respectively comprise the upper wall part and lower wall part of the impact-absorbing-member main-body part 41. FIG. Moreover, the opposing space | interval (length of an up-down direction) of a pair of extended wall parts 65 and 65 is set so that it may become large as it goes to the vehicle interior side.

  The connecting wall portion 60 has a shape that bulges toward the extending wall portion 65 facing the connecting wall portion 60, and a regulating wall portion 70 is provided at the bulging end portion. In addition, the bulging end portion of the connecting wall portion 60 is provided at a central portion of the connecting wall portion 60 in the vehicle interior / exterior direction. The restriction wall portion 70 (restriction portion) has a substantially T shape protruding from the connection wall portion 60 to the restriction wall portion 70.

  Specifically, the regulation wall portion 70 includes a projecting wall portion 71 projecting from the connection wall portion 60 to the regulation wall portion 70, and a facing surface provided at the projecting end of the projecting wall portion 71 and facing the extended wall portion 65. A distal end wall portion 72 having 72A.

  In the distal end wall portion 72, a portion that is closer to the vehicle interior side than the protruding wall portion 71 is inclined so as to go to the connection wall portion 60 as it goes to the vehicle interior side.

  An extending piece 73 extending toward the extending wall 65 is formed at the end of the front wall 72 on the vehicle interior side. In addition, an extended piece portion 74 extending toward the connecting wall portion 60 is formed at the end of the distal end wall portion 72 outside the passenger compartment.

  The extending piece 73 has a function of contacting the lower board 23 when the impact absorbing member 40 is crushed during a side collision. The extending piece 74 has a function of contacting the panel-side facing wall 50 when the impact absorbing member 40 is crushed during a side collision. By providing such extended piece portions 73 and 74, the tip wall portion 72 can be buckled more reliably.

  Next, the operation and effect of this embodiment will be described. In the present embodiment, the impact absorbing member main body 41 has the same cross-sectional shape cut along the vehicle interior / exterior direction over the entire length in the vehicle front-rear direction. Thereby, even if the position of the occupant relative to the shock absorbing member main body 41 is displaced in the vehicle front-rear direction, the same shock absorbing performance can be exhibited.

  Specifically, for example, when the waist 15A of the occupant 15 (illustrated by a one-dot chain line) is disposed opposite to the center of the shock absorbing member 40 (see FIG. 1), the waist 15A faces the rear of the shock absorbing member 40. When arranged (see FIG. 7), the same shock absorbing performance can be exhibited.

  FIG. 6 is a graph showing FS characteristics (energy absorption characteristics) in the impact absorbing member. The horizontal axis in FIG. 6 indicates the amount of displacement of the shock absorbing member that is pressed by the door panel 11 toward the vehicle interior during a side collision (corresponding to the amount of collapse of the shock absorbing member). In FIG. 6, the position where the door panel (inner panel) contacts the shock absorbing member is used as a reference (zero). In addition, the vertical axis in FIG. 6 represents the reaction force of the shock absorbing member 40 with respect to the load at the time of a side collision (corresponding to the load received by the occupant).

  A solid line L2 in FIG. 6 indicates the FS characteristic in the shock absorbing member 40 of the present embodiment. A broken line L4 in FIG. 6 indicates an FS characteristic (illustrated by a broken line in FIG. 6) in a conventional shock absorbing member (for example, a shock absorbing member having a square shape in front view or a circular shape in front view). 6 represents an ideal FS characteristic required for a general shock absorbing member.

  In the present embodiment, the connecting wall portion 60 has a shape that bulges toward the extending wall portion 65, and is more likely to buckle than a linear shape that extends in the vehicle interior and exterior direction. For this reason, at the time of a side collision of the vehicle, when the panel-side facing wall 50 is pressed from the outside of the passenger compartment, the connecting wall 60 is easily buckled. Thereby, the initial load which acts on a passenger | crew at the time of a side collision can be reduced. The buckling referred to here means that the connecting wall portion 60 is bent in a direction (upward or downward) perpendicular to the vehicle interior / exterior direction by receiving a compressive load in the vehicle interior / exterior direction.

  As the connecting wall portion 60 is buckled, the connecting wall portion 60 is bent so that the bulging end faces the extending wall portion 65, and the regulating wall portion 70 is displaced toward the opposing extending wall portion 60. . In other words, the pair of connecting wall portions 60, 60 are deformed so as to move away from each other, and the pair of regulating wall portions 70, 70 are displaced upward and downward, respectively.

  Then, when the space | interval of the connection wall part 60 and the extension wall part 65 becomes small with buckling of the connection wall part 60 and the extension wall part 65, the control wall part 70 (opposite facing) provided in the connection wall part 60 will be reduced. The surface 72A abuts against the extending wall portion 65 (see FIG. 3). After this (corresponding to the region indicated by arrow A in FIG. 6), the connecting wall portion 60 that is to be bent toward the extending wall portion 65 side, and the extending wall portion 65 that is to be bent toward the connecting wall portion 60 side Support each other, and buckling of the connecting wall portion 60 and the extending wall portion 65 is restricted.

  Thereby, after the regulation wall part 70 contacts the extension wall part 65, the situation where the connection wall part 60 and the extension wall part 65 are easily deformed can be suppressed, and as shown in the conventional example of FIG. The situation where power falls can be controlled. As a result, it is possible to suppress a situation in which the energy absorption performance of the shock absorbing member 40 is degraded and a situation in which the acceleration applied to the occupant changes. In other words, the FS characteristic of the shock absorbing member 40 can be brought close to an ideal FS characteristic (shown by a one-dot chain line in FIG. 6). When the deformation of the shock absorbing member 40 further proceeds from the state of FIG. 3, the tip wall portion 72 and the extending wall portion 65 are buckled. Further, in FIG. 3, the mounting boss 28 and the through hole 42A are omitted.

  In the present embodiment, by increasing the degree of bulging of the connecting wall 60, the connecting wall 60 can be more easily buckled, and the initial load can be reduced. Further, by shortening the facing distance between the tip wall portion 72 and the extending wall portion 65 of the regulating wall portion 70, the regulating wall portion 70 can be brought into contact with the extending wall portion 65 at an earlier stage in the side collision. it can.

  Thus, in the shock absorbing structure of the present embodiment, the initial load acting on the occupant can be reduced by easily buckling the connecting wall portion 60 in the initial stage of the side collision, and then the connection is performed. By restricting the buckling of the wall part 60 and the extended wall part 65, a situation in which the reaction force is reduced can be suppressed, and good energy absorption characteristics can be exhibited.

  Further, in the present embodiment, the regulation wall portion 70 is provided at the protruding wall portion 71 protruding from the connecting wall portion 60 to the extending wall portion 65, and at the protruding end of the protruding wall portion 71, and faces the extending wall portion 65. A distal end wall portion 72 having a facing surface 72A.

  By providing the tip wall portion 72 having the facing surface 72A, the facing surface 72A can be brought into contact with the extended wall portion 65 more reliably. Thereby, the buckling of the connection wall part 60 can be controlled more reliably.

  Further, the panel-side facing wall portion 50, the connecting wall portion 60, the extending wall portion 65, and the regulating wall portion 70 are provided so as to be vertically symmetric with respect to an axis L1 extending in the exterior direction of the vehicle interior. Can be.

  The door trim 20 includes a lower board 23 and a holding portion 29 provided on the outer surface 23A of the lower board 23. The holding portion 29 has a recess 29A that is opened to the outer side of the passenger compartment. The door trim side facing wall portion 55 is accommodated in the recess 29A.

  By accommodating the door trim side facing wall portion 55 in the recess 29 </ b> A, the impact absorbing member 40 can be more reliably positioned with respect to the lower board 23.

<Embodiment 2>
Next, Embodiment 2 of the present invention will be described with reference to FIG. The same parts as those in the above embodiment are denoted by the same reference numerals, and redundant description is omitted. In the shock absorbing structure of the present embodiment, the structure of the shock absorbing member is different from that of the above embodiment.

  As shown in FIG. 8, the shock absorbing member main body 141 of the shock absorbing member 140 of this embodiment includes a wall 142 that connects the pair of panel-side facing walls 50 and 50. In the present embodiment, the end portions outside the passenger compartment of the pair of connecting wall portions 60, 60 are also connected by the wall portion 142. With such a configuration, compared to the configuration of the above-described embodiment, it is possible to make the connecting wall portion 60 less likely to buckle at the initial stage of the side collision, and it is possible to further improve the energy absorption performance.

<Embodiment 3>
Next, Embodiment 3 of the present invention will be described with reference to FIG. The same parts as those in the above embodiment are denoted by the same reference numerals, and redundant description is omitted. In the shock absorbing structure of the present embodiment, the structure of the shock absorbing member is different from that of the above embodiment.

  As shown in FIG. 9, the shock absorbing member main body 241 of the shock absorbing member 240 of the present embodiment includes a wall 242 that connects the wall 142 and the door trim side facing wall 55. The wall portion 242 extends in the vehicle interior / exterior direction. With such a configuration, it is possible to make the connecting wall portion 60 more difficult to buckle at the initial stage of the side collision as compared with the configuration of the second embodiment.

<Embodiment 4>
Next, a fourth embodiment of the present invention will be described with reference to FIG. The same parts as those in the above embodiment are denoted by the same reference numerals, and redundant description is omitted. In the shock absorbing structure of the present embodiment, the structure of the shock absorbing member is different from that of the above embodiment.

  In the shock absorbing member main body 341 of the shock absorbing member 340 of the present embodiment, as shown in FIG. 10, the tip wall 372 of the regulating wall 370 has a linear shape extending in the vehicle interior and exterior direction.

  Further, the bulging end portion of the connecting wall portion 360 that is shaped to bulge into the extending wall portion 65 is disposed on the vehicle interior side with respect to the central portion of the connecting wall portion 360 in the vehicle interior and exterior direction. With such a configuration, it is possible to make it difficult for the connecting wall portion 360 to buckle as compared with a configuration in which the bulging end portion of the connecting wall portion 360 is arranged at the center in the vehicle interior / exterior direction.

<Embodiment 5>
Next, Embodiment 5 of the present invention will be described with reference to FIG. The same parts as those in the above embodiment are denoted by the same reference numerals, and redundant description is omitted. In the shock absorbing structure of the present embodiment, the structure of the shock absorbing member is different from that of the above embodiment.

  In the shock absorbing member main body portion 441 of the shock absorbing member 440 of the present embodiment, a wall portion 473 is provided so as to be orthogonal to the protruding wall portion 71 as shown in FIG. With such a configuration, it is possible to prevent the tip wall portion 372 from buckling after the tip wall portion 372 contacts the extending wall portion 65.

<Embodiment 6>
Next, Embodiment 6 of the present invention will be described with reference to FIG. The same parts as those in the above embodiment are denoted by the same reference numerals, and redundant description is omitted. In the shock absorbing structure of the present embodiment, the structure of the shock absorbing member is different from that of the above embodiment.

  In the shock absorbing member main body 541 of the shock absorbing member 540 of the present embodiment, as shown in FIG. 12, a restriction wall 370 is provided on the extended wall 65 and protrudes toward the connecting wall 60. T-shaped. With such a configuration, when the connecting wall portion 60 is buckled, the connecting wall portion 60 can be received by the tip wall portion 372 of the regulating wall portion 370, and the buckling of the connecting wall portion 60 is regulated. Can do.

<Embodiment 7>
Next, Embodiment 7 of the present invention will be described with reference to FIG. The same parts as those in the above embodiment are denoted by the same reference numerals, and redundant description is omitted. In the shock absorbing structure of the present embodiment, the structure of the shock absorbing member is different from that of the above embodiment.

  As shown in FIG. 13, the shock absorbing member main body 641 of the shock absorbing member 640 of the present embodiment includes a vehicle compartment outer wall 642 that faces the door panel 11 in addition to the pair of panel-side facing walls 50 and 50. ing. Moreover, the door trim side opposing wall part 55 is provided with a pair in the form arranged in the up-down direction.

  The end of the vehicle interior outer wall 642 and the end of the door trim side facing wall 55 are connected by a wall 643 that extends outward in the vehicle interior. Further, the holding portion 629 of the present embodiment is provided with a pair of recesses 29A and 29A corresponding to the pair of door trim side facing walls 55 and 55.

<Eighth embodiment>
Next, an eighth embodiment of the present invention will be described with reference to FIG. The same parts as those in the above embodiment are denoted by the same reference numerals, and redundant description is omitted. In the shock absorbing structure of this embodiment, the configuration of the lower board is different from that of the above embodiment.

  The lower board 723 of this embodiment is inclined with respect to the inner panel 12 as shown in FIG. A holding portion 729 is formed on the outer surface 723 </ b> A of the lower board 723. The holding portion 729 is configured by ribs arranged in a lattice shape, and has a concave portion 729A in which the door trim side facing wall portion 55 is accommodated.

  A rib 730 extending in the vertical direction is formed on the bottom surface of the recess 729A. The rib 730 has a surface 730 </ b> A on the outer side of the passenger compartment that is parallel to the door trim side facing wall portion 55. By having such a surface 730A outside the passenger compartment, the door trim side facing wall portion 55 can be reliably received from the passenger compartment side regardless of the inclination angle of the lower board 723.

  In the shock absorbing member main body 741 of the shock absorbing member 740 in this embodiment, the length of the upper extending wall portion 765 in the vehicle interior / exterior direction is the vehicle interior / exterior direction of the lower extending wall portion 65. It is assumed to be larger than the length of.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.

  (1) In the above embodiment, the configuration in which the shock absorbing member 40 is attached to the lower board 23 (door trim 20 side) is exemplified, but the present invention is not limited to this. The shock absorbing member 40 only needs to be disposed between the door panel 11 and the door trim 20, and may be attached to the inner panel 12 (door panel 11 side), for example. Moreover, the panel side opposing wall part 50 may be arrange | positioned facing the outer panel in a door panel.

  (2) The configuration of the restriction wall is not limited to that illustrated in the above embodiment, and can be changed as appropriate. For example, the regulation wall portion may include only the protruding wall portion 71.

DESCRIPTION OF SYMBOLS 10 ... Vehicle door, 11 ... Door panel, 12A ... Vehicle interior side surface of inner panel (vehicle panel side surface of door panel), 20 ... Door trim, 23, 723 ... Lower board (trim main body), 23A ... Vehicle on lower board Outdoor side surfaces (surfaces outside the vehicle compartment in the trim main body, surfaces outside the vehicle compartment in the door trim), 29, 629, 729 ... holding portions, 29A, 729A ... concave portions, 40, 140, 240, 340, 440, 540 , 640, 740 ... shock absorbing member, 41, 141, 241, 341, 441, 541, 641, 741 ... shock absorbing member main body, 50 ... panel side facing wall, 55 ... door trim side facing wall, 60, 360 ... Connection wall part, 65, 765 ... Extension wall part, 70, 370 ... Restriction wall part (regulation part), 71 ... Projection wall part, 72, 372 ... Tip wall part, 2A ... other and facing opposite surfaces of, L1 ... Axis (axis of symmetry)

Claims (3)

A shock absorbing structure for a vehicle door,
The vehicle door is
A door panel,
A door trim disposed on the vehicle interior side of the door panel;
An impact absorbing member disposed between the door panel and the door trim,
The shock absorbing member is
An impact-absorbing member main body having a shape extending in the vehicle longitudinal direction and having the same cross-sectional shape cut along the vehicle interior / exterior direction over the entire length in the vehicle longitudinal direction;
The shock absorbing member main body is
A panel-side facing wall portion disposed opposite to a vehicle interior side surface of the door panel;
A door trim side facing wall portion disposed to face the outer surface of the passenger compartment in the door trim;
A connecting wall portion extending in the vehicle interior and exterior direction and connecting the panel side facing wall portion and the door trim side facing wall portion;
Extending from the panel-side facing wall portion to the door trim side, and including an extending wall portion arranged to face the connecting wall portion,
The connecting wall portion has a shape that bulges toward the extending wall portion side,
Either one of the connecting wall portion or the extending wall portion is provided with a restricting portion having a shape protruding to the other,
The restricting portion is configured to restrict buckling of the connecting wall portion by abutting against the other when the connecting wall portion is buckled by pressing the panel side facing wall portion from the outside of the passenger compartment. der is,
The regulation part is
A protruding wall portion protruding from the one to the other;
The projecting provided on the projecting end of the wall portion, the other facing the shock absorber for a vehicle door which Ru comprising a front end wall portion, a having a facing surface.   The panel-side facing wall portion, the connecting wall portion, the extending wall portion, and the restricting portion are each provided in pairs so as to be vertically symmetric with respect to an axis extending in the vehicle interior / exterior direction. 2. A shock absorbing structure for a vehicle door according to 1. The door trim is
A plate-shaped trim body,
A holding portion provided on a surface of the trim main body on the outer side of the passenger compartment,
The holding portion has a concave portion opened to the outside of the passenger compartment,
The shock absorbing structure for a vehicle door according to claim 1 or 2, wherein the door trim side facing wall portion is accommodated in the recess.

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