JP2018016155A - Door trim arm rest structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door trim arm rest structure in which a collision impact load is sufficiently absorbed by deformation of an arm rest, and in which a rear side of the arm rest is not exposed to an inside of a cabin so as to avoid interference to an occupant.SOLUTION: A door trim arm rest structure 10 comprises: a hollow arm rest body 14 attached to a door trim 13 on inside of a door inner panel; and an engagement claw 21 extending obliquely downward to outside of a cabin, from the vicinity of a tip end of an arm rest upper end part 14a, engaging to an engagement part 22 provided on the door trim, and regulating upward deformation of the upper end part. In side collision time, a contact part 23 provided on the door trim contacts a tip end of the engagement claw 21 toward inside of the cabin, for releasing engagement of the engagement claw 21 to the engagement part 22, and an occupant presses the arm rest body 14 to outside of the cabin by reaction, so that the upper end part 14a of the arm rest body moves to outside of the cabin while moving upward, for absorbing impact to the occupant.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an armrest structure attached to a door trim so as to protrude from a door trim inside a door provided on a side surface of an automobile to a vehicle interior side, and more particularly, an impact on an occupant when an impact is applied to the side surface of the vehicle body The present invention relates to an armrest structure that absorbs water.

  In general, an armrest of an automobile is provided on a door trim provided on the inner side of an inner panel constituting the door, with respect to a door provided on a side surface of the automobile body. Such an armrest structure is configured, for example, as shown in FIG.

In FIG. 6, a known armrest structure 1 is configured to include an armrest body 5 attached so as to protrude inward with respect to a door trim 4 attached to the inner surface of an inner panel 3 constituting the door 2. Yes.
As shown in detail in FIG. 7, the armrest body 5 has an armrest base material 5 a for placing an arm on the upper surface of the armrest, and the base material 5 a extends outward from the vehicle interior toward the door trim 4. The front end of the door trim 4 is bent upward beyond the opening 4a provided in the door trim 4, and the bent upward extension 5b is engaged with the engaging portion 4b provided in the door trim 4. The door trim 4 is held. Further, the armrest body 5 protruding toward the passenger compartment has a base material 5a that hangs downward from the protruding end, and the downwardly extending portion 5b that hangs down is engaged with an engaging portion 4b provided on the door trim 4 in the same manner. By combining, the door trim 4 is held.

  Here, the surface of the base material 5a of the armrest is covered with the skin 5c by sticking, bonding, integral molding or the like. Further, the armrest base material 5a has a groove 5d formed on the lower surface (the back surface when viewed from the passenger compartment) along the axial direction of the armrest in a region close to the tip.

In the armrest structure 1 having such a configuration, as schematically shown in FIG. 8A, the armrest main body 5 normally extends obliquely upward from the vehicle interior side toward the outside, and the base 5a An extension 5b at the tip is held on the back side of the door trim 4 by the engaging portion 4b. In this way, as shown in FIG. 6, the occupant 6 seated on the seat adjacent to the door 2 can place an elbow on the upper surface of the armrest body 5.
At that time, a downward load is applied to the armrest body 5 by the elbow of the occupant 6, but the load at that time is transmitted from the base material 5 a to the door trim 4 through the engagement portion 4 b, and the armrest body 5 is surely secured. It is supposed to be retained.

In such a state, when an impact is applied to the side surface due to a side impact of the automobile, for example, when an impact is applied from the left as shown by arrow E in FIG. At 8 (B), the body of the occupant 6 hits the armrest body 5 as indicated by the arrow F relatively due to inertia.
As a result, the armrest body 5 and the upper end portion 5a move leftward from the chain line illustrated position to the solid line illustrated position in FIG. 8B, and at that time, the armrest body 5 and the upper end 5a are lowered by the groove 5d provided on the lower surface side of the substrate 5a. A so-called valley fold deformation is generated toward the base, and the base material 5a is bent downward. As a result, the armrest body 5 largely moves to the left, thereby absorbing the impact applied to the body of the occupant 6.

However, in the armrest structure 1 having such a configuration, the base material 5a of the armrest causes valley fold deformation in the groove portion 5d at the time of a side collision, so that most of the portion located on the vehicle interior side from the groove portion 5d is on the vehicle interior side. It will extend diagonally upward toward.
For this reason, when the body of the occupant 6 hits the armrest body 5 from the vehicle interior side toward the outside during a side collision, the upper end portion 5a of the armrest partially stretches, and the impact shock load is sufficiently absorbed. Otherwise, the back side of the armrest base material 5a is exposed toward the vehicle interior side, and there is a concern that the occupant 6 may be compressed.

On the other hand, Patent Document 1 discloses a bracket provided in a side support pad on the door side of the seat back and an armrest when the armrest and / or door trim receives a load from the bracket during a vehicle-side collision. An armrest detaching device that detaches at least one end in the left-right direction from the door trim, and the bracket has a strength greater than the strength of the armrest detachment and / or buckling, and the bracket is attached to the seat skeleton. A rear end portion that is fixed to the armrest in the height direction, or a front extension portion that extends downward and extends obliquely forward from the rear end portion to the armrest side in a plane that is on the lower side and orthogonal to the height direction. A vehicular side occupant protection device is disclosed.
The vehicle-side passenger protection device preferably includes a rib inclined surface that is provided on one of the armrest and the door trim lower and is displaced in the vertical direction as it goes in the vehicle left-right direction, and preferably one of the armrest and the door trim upper. And a shaft extending in the vehicle left-right direction and fitted in the hole, and more preferably provided in one of the armrest and the door trim lower. A first claw, and a second claw provided on the other of the armrest and the door trim lower.

  In the vehicular side occupant protection device of Patent Document 1 having the above configuration, when the vehicle collides, the rib inclined surface of the arm restorer slides along the rib inclined surface of the armrest lower, and the arm restorer jumps upward. Removes from the armrest lower and absorbs impact shock load by bending deformation and breakage of the armrest lower alone.

  On the other hand, Patent Document 2 discloses an automotive interior part that is mounted on an interior surface of a side wall panel of a vehicle, and is provided with an armrest in an approximately central impact area of a trim body. In the above, the armrest is provided with a mounting seat plate extending downward on the side wall panel side edge of the armrest core material as a base, and the armrest is attached to the trim body via the mounting seat plate. An interior part for an automobile characterized in that the base portion of the mounting seat plate is broken at the time of a collision and the armrest core material and the mounting seat plate are separated to ensure a large displacement stroke amount of the armrest at the time of a side collision. Is disclosed.

According to the armrest device according to Patent Document 2, when a side collision occurs, the load concentrates on the base portion of the mounting seat plate, and the mounting seat plate easily breaks from the armrest. As a result, the armrest is effectively displaced toward the side wall panel to absorb the impact load.
In addition, when the finisher panel is detachably attached between the armrest and the door trim body, the armrest is only the new space formed by the finisher panel jumping upward by the pressing force from the armrest. Is displaced more effectively.

On the other hand, in Patent Document 3, in the armrest that protrudes from the side surface of the vehicle interior of the door trim, the armrest is formed on the surface of the base material that hits the part where the elbow is placed, and in the longitudinal direction on the surface. An armrest comprising: an extending groove; and a piece formed on a back surface opposite to a surface on which the groove is formed and projecting obliquely downward from the back surface toward the door trim side. It is disclosed.
In this armrest, preferably, the base material is configured separately from the door trim, and the harm is moved upward with respect to the door trim when the one part is locked to the door trim. More preferably, the door trim is provided with a protrusion disposed between the base and the piece.

According to the armrest device disclosed in Patent Document 3, the protrusion comes into contact with the base material against the force from above the armrest, and the base material is locked by the protrusion and acts in the direction in which the groove closes. Cracks are unlikely to occur starting from the surface of the substrate.
Also, in response to an impact from the side of the armrest, the one part supports the base material and deforms starting from the groove. At that time, since the base material is supported by the one part, the base material is bent toward the back side. It cannot be removed and bends toward the surface.

JP 2008-076634 A JP 2009-006934 A JP 2011-000990 A

  However, in the vehicular side occupant protection device according to Patent Document 1, the vehicle inner side of the armrest jumps up at the time of a side collision, so that the back surface of the armrest is exposed toward the occupant. Therefore, if there is a protrusion on the back surface of the armrest, this protrusion may come into contact with or press contact with the occupant's body. Further, when a delay in the jumping of the armrest occurs, the occupant is in contact with the armrest in a state where the armrest does not sufficiently jump up.

  Moreover, in the interior parts for automobiles according to Patent Document 2, an armrest pad is necessary to compensate for the level difference of the armrest core material, the number of parts is increased, the structure is complicated, and the parts cost and assembly cost are increased. It will increase.

  Furthermore, in the armrest by patent document 3, it is necessary to provide a groove | channel on the surface of a base material, and in order to cover this groove | channel, a skin and a loose material are needed. Therefore, since it is necessary to add parts to the base material, the parts cost and the assembly cost increase. Moreover, since the base material of the armrest bends toward the surface at the time of a side collision, when the armrest is inclined and attached to the indoor side, the armrest will bend toward the vehicle interior side, It may be possible to interfere with your body.

As described above, the door trim armrest is liable to be crushed at the time of impact on the side of the vehicle due to a side collision or the like, and is desired to increase rigidity during normal use. However, there has conventionally been room for improvement in terms of load absorption performance due to deformation of the door trim armrest and interference with passengers at the time of impact.
In view of the above points, the present invention can sufficiently absorb a collision impact load by deformation of an armrest with a simple configuration, and does not expose the back side of the armrest toward the interior of the passenger compartment, thereby interfering with the occupant's body. An object of the present invention is to provide a door trim armrest structure that can be avoided.

  According to the present invention, the above object is attached to the door trim provided inside the inner panel of the door that closes the opening on the side of the vehicle body of the automobile so as to protrude toward the vehicle interior, and the upper end extends to the door trim. A hollow armrest body that extends obliquely downward from the vicinity of the front end of the upper end portion of the armrest body toward the outside of the passenger compartment, and engages with an engagement portion provided on the door trim from below to above the upper end portion. The engagement portion provided in the door trim is also directed toward the vehicle interior side by the door inner panel that is deformed toward the vehicle interior side in the event of a side collision of the automobile. The armrest main body is moved by the occupant seated on the seat adjacent to the armrest while the engagement of the engagement claw is released from the engagement claw. The door trim armrest structure is characterized in that the armrest body moves toward the outside of the passenger compartment and absorbs the impact on the passenger while the upper end of the armrest body moves upward by being pushed outward. Is achieved.

According to the above configuration, the upper end of the armrest main body is normally moved upward by the engagement claw provided on the upper end of the armrest main body engaging the engagement portion provided on the door trim from below. Movement is restricted.
Therefore, for example, even if a passenger's body sitting on or trying to sit on a seat adjacent to the door hits the armrest and presses toward the outside of the passenger compartment, the upper end of the armrest body moves upward and comes off the door trim. There is no such thing.

In contrast, when a collision impact load is applied to the door from the outside during a side collision of the automobile, the door inner panel constituting the door is also deformed toward the vehicle interior side. As a result, the contact portion provided on the door trim similarly moves toward the vehicle interior side and comes into contact with the front end of the engaging claw provided at the upper end portion of the armrest body, so that it can be quickly performed after the side collision. The engagement of the engagement claw with the engagement portion is reliably released.
When the upper body of the occupant further pushes the armrest body toward the outside of the passenger compartment due to the impact of the collision impact from the disengagement state of the engaging claws, the upper end of the armrest body moves upward. However, the armrest body moves greatly toward the outside of the passenger compartment.
Accordingly, the collision impact load is efficiently absorbed, and the armrest body is not partially stretched against the occupant's upper body, so that the damage to the occupant is reduced.

In addition, since the upper part of the armrest body moves upward on the outside of the passenger compartment, the back side of the armrest body is not exposed to the occupant, and accordingly, the protrusion provided on the back side of the armrest body There will be no harm to passengers due to things.
Furthermore, since there are no steps or grooves on the surface side of the armrest body, there is no need for an armrest pad or a loose material that covers the surface of the armrest body, and the structure can be simplified.

  In the door trim armrest structure according to the present invention, preferably, the upper end portion of the armrest is provided with a rib that extends obliquely downward toward the vehicle interior side on the lower surface thereof, and the armrest main body faces the vehicle interior outside during a side collision of the automobile. When pushed, the rib abuts against a sliding surface extending obliquely downward toward the vehicle interior side provided on the door trim, and the upper end of the armrest body moves upward by sliding along this sliding surface. Is done.

As a result, at the time of a side collision of the automobile, a part of the door trim moves to the vehicle interior side as the door inner panel moves to the vehicle interior side, and at that time, the engagement provided on the back side of the upper end portion of the armrest body The claw is released from the engaging portion provided on the door trim, and the upper body of the occupant further pushes the armrest body toward the outside of the passenger compartment relatively due to inertia, thereby providing the upper end of the armrest body. The ribs thus slid along the sliding surface provided on the door trim. Thereby, the upper end of the armrest body moves upward while the rib slides along the slide surface.
Therefore, when the occupant's body is pushed toward the outside of the passenger compartment with respect to the armrest body at the time of a side collision of the automobile, the upper end portion of the armrest body is actively moved upward by sliding with the rib and the slide surface. It will be. In this way, the upper end portion of the armrest main body reliably moves upward during a side collision, so that the collision impact load is sufficiently absorbed.

  In this way, according to the present invention, the impact shock load can be sufficiently absorbed by easily deforming the armrest in the vehicle body width direction with a simple configuration without setting a weak body structure on the armrest. According to the present invention, since the outside of the armrest is removed in the case of a side collision, the back side of the armrest is not exposed toward the vehicle interior side, and interference with the occupant's body is avoided. Therefore, according to the present invention, it is possible to provide an extremely excellent door trim armrest structure capable of reducing both the deformation load in the vehicle width direction of the armrest at the time of a side collision and ensuring the rigidity at the time of normal use.

It is a partially broken front view which shows the structure of one Embodiment of the door trim armrest structure by this invention which protruded and attached to the vehicle interior side from the door trim. FIG. 2 is a perspective view of the door trim armrest structure of FIG. 1 as viewed from the direction of arrow P in FIG. FIGS. 2A and 2B are cross-sectional views taken along line A-A in FIG. 1, in which FIG. 1A shows a normal state and FIG. 1B shows a state after the vehicle body has received an impact from the direction of arrow E in FIG. FIGS. 2A and 2B are cross-sectional views taken along the line B-B in FIG. 1, in which FIG. 1A shows a normal state and FIG. 1B shows a state after the vehicle body has received an impact from the direction of arrow E in FIG. FIGS. 2A and 2B are cross-sectional views taken along line C-C in FIG. 1, in which FIG. 1A shows a normal state and FIG. 1B shows a state after the vehicle body has received an impact from the direction of arrow E in FIG. It is a schematic front view which shows the structure of an example of the conventional door trim armrest structure. It is the DD sectional view taken on the line of FIG. FIG. 8 schematically shows a cross-sectional view of FIG. 7, (A) is a normal time, and (B) is a cross-sectional view after a side collision.

Hereinafter, the present invention will be described in detail based on the embodiments shown in the drawings.
FIG. 1 shows a configuration of an embodiment of a door trim armrest structure according to the present invention. In FIG. 1, an armrest structure 10 is configured with respect to a door 11 that closes an opening (not shown) on the side of a vehicle body of an automobile, and a door trim attached to the inner surface of a door inner panel 12 that constitutes the door 11. 13 is composed of an armrest body 14 attached so as to protrude inward.

  As shown in FIG. 3 (A), the armrest main body 14 includes a base material, for example, a metal or synthetic resin frame that constitutes the armrest main body. It has an arm placement portion extending in the front-rear direction for holding, and the entire surface including this surface is covered with a skin by sticking, bonding, integral molding or the like, and is formed in a hollow shape. The main structure of the armrest body 14 is the same as that of a conventional armrest body. The armrest main body 14 has an upper end portion 14a extending outward from the vehicle interior side, and a tip end of the armrest main body 14 is positioned so as to leave a slight gap with the door trim 13.

  In this embodiment, the armrest main body 14 is fixedly held to the door trim 13 at two locations along the upper edge by the engaging portions 22 of the engaging means 20 protruding from the door trim 13 side. The engaging means 20 includes an engaging claw 21 provided on the armrest body 14 side, and an engaging portion 22 and a contact portion 23 provided on the door trim 13 side.

  The engaging claw 21 is formed integrally with the armrest main body 14 and has flexibility. As shown in FIG. 3 (A), the engaging claw 21 of the armrest body 14 extends obliquely downward from the front end toward the outside of the passenger compartment at the upper end portion 14a of the armrest body 14, An upward hook 21a is provided at the tip. Thereby, when the armrest main body 14 is attached to the door trim 13 at a predetermined position, the hook 21a of the engaging claw 21 is engaged with the lower end 22a of the engaging portion 22 on the door trim 13 side from below, whereby the armrest main body 14 is engaged. 14 is regulated so as not to be deformed upward.

  As shown in FIG. 3 (A), the engaging portion 22 protrudes from the door trim 13 toward the vehicle interior side and is bent downward to form a crank-like cross section. Are to be engaged.

  As shown in FIG. 2 as viewed from the direction of the arrow P in FIG. 1, the contact portion 23 is disposed so as to face the engagement claw 21 on the outer side of the passenger compartment. As shown in FIG. 3A, the abutting portion 23 has a protrusion 23a formed in a vertical cross section that is flat as a whole and whose upper end slightly protrudes toward the vehicle interior side.

  Here, as shown in FIG. 2, the contact part 23 is supported by the support part 23b on both the left and right sides. As shown in FIG. 4A, the support portion 23 b extends obliquely upward from the vicinity of the upper end of the contact portion 23 toward the vehicle interior side, and the tip thereof is integrally formed with the door trim 13. Further, the support portion 23 b includes a groove portion 23 c on the outer surface of the passenger compartment near the connection portion with the door trim 13. As a result, the strength of the support portion 23b is weakened in the groove portion 23c, and when the contact portion 23 is pushed toward the vehicle interior side by the door inner panel 12 in a side collision as will be described later, this groove portion It is designed to turn upward toward the passenger compartment side with the center 23c as the center of rotation.

Further, in the region adjacent to the engaging means 20, the armrest body 14 is obliquely downward toward the vehicle interior side on the lower surface near the tip of the upper end portion 14a of the armrest body 14 as shown in FIG. Ribs 24 that bulge and extend are provided.
On the other hand, the door trim 13 is provided with a slide surface 25 that extends obliquely downward toward the vehicle interior side at a protruding portion 13a bent toward the lower side of the armrest body 14.

The door trim armrest structure 10 according to the embodiment of the present invention is configured as described above and operates as follows.
First, in the normal state, as shown in FIGS. 1 and 2, the armrest body 14 is fixedly held to the door trim 13 by fixing means (not shown). At this time, the engaging claw 21 of the armrest main body 14 has the hook 21a at the tip thereof downward with respect to the lower end 22a of the engaging portion 22 of the door trim 13, as shown in FIGS. Abut. Moreover, the rib 24 of the armrest main body 14 is not in contact with the slide surface 25 of the door trim 13 as shown in FIG. Thereby, the armrest main body 14 is being fixed reliably with respect to the door trim 13, and when a passenger | crew mounts an elbow, it can oppose the downward load by an elbow.

In such a state, when the vehicle receives an impact on the side surface of the vehicle due to a side collision or the like, the impact is applied from the right side as indicated by an arrow E in FIGS. 3 (A) and 4 (A). By this impact force, the door inner panel 12 constituting the door 11 of the automobile is deformed toward the vehicle interior side and pushes the contact portion 23 on the door trim 13 side toward the vehicle interior side.
At that time, as shown in FIG. 4B, the abutment portion 23 rotates upward by an angle θ with the groove portion 23c formed in the support portion 23b as a rotation center, and the engagement claw 21 of the armrest main body 14 is engaged. Is moved toward the vehicle interior side to release the engaging claw 21 of the armrest body 14 from the engaging portion 22. In this way, the engagement between the engagement claw 21 and the engagement portion 22 is released, and the upper edge portion 14a of the armrest body 14 can move the edge portion outside the passenger compartment upward.

  Since the protrusion 23a is provided on the upper edge of the abutting portion 23, when the abutting portion 23 pushes the engaging claw 21 while rotating, the tip of the engaging claw 21 is in contact with the abutting portion. The engagement claw 21 is surely released from engagement without being disengaged from the movement 23. Such disengagement of the engaging claws 21 is quickly and reliably performed at the time of a side collision.

Then, after the engagement claw 21 is disengaged, when the state of the occupant further pushes the armrest body 14 toward the outside of the passenger compartment due to the inertia of the collision impact, as shown in FIG. A rib 24 provided on the upper end portion 14a of the armrest body 14 slides along the slide surface 25 on the door trim 13 side. As a result, the upper end portion 14 a of the armrest body 14 moves upward as the rib 24 slides along the slide surface 25. Thereby, the armrest main body 14 moves greatly toward the vehicle compartment outer side, while the upper end part 14a of the armrest main body 14 moves smoothly and reliably upward.
Accordingly, the collision impact load is efficiently absorbed, the armrest body 14 is not partially stretched against the occupant's upper body, and the back surface of the armrest body 14 is exposed to the occupant. Without this, the damage to the occupant will be greatly reduced.

The present invention can be implemented in various forms without departing from the spirit of the present invention.
For example, in the above-described embodiment, the armrest body 14 is restricted from moving upward relative to the door trim 13 by the two engagement means 20, but the present invention is not limited thereto, It may be provided at three or more places.

  In the above-described embodiment, the armrest main body 14 and the base are configured only. However, the present invention is not limited to this, and a skin or the like or a decorative part may be provided as desired.

DESCRIPTION OF SYMBOLS 10 Door trim armrest structure 11 Door 12 Door inner panel 13 Door trim 13a Projection part 14 Armrest main body 14a Upper end part 20 Engagement means 21 Engagement claw 21a Hook 22 Engagement part 22a Lower end 23 Contact part 23a Projection 23b Support part 23c Groove part 24 Rib 25 Slide surface

Claims (2)

A hollow armrest body that is attached so as to protrude toward the vehicle interior side with respect to a door trim that is provided inside the inner panel of the door that closes the opening on the side surface of the vehicle body, and has an upper end extending to the door trim.
The armrest body extends obliquely downward from the vicinity of the tip of the upper end portion of the armrest body toward the outside of the passenger compartment, and engages with an engaging portion provided on the door trim from below to restrict upward deformation of the upper end portion. Engaging claws;
Contains
Due to a door inner panel that deforms toward the vehicle interior side when the automobile collides, the engagement portion provided on the door trim similarly moves toward the vehicle interior side and contacts the tip of the engagement claw. Thus, the engagement of the engagement claw with the engagement portion is released,
The armrest body is pushed outward by the passenger sitting on the seat adjacent to the armrest, so that the upper end of the armrest body moves upward while the armrest body moves outward. A door trim armrest structure that moves toward the vehicle and absorbs the impact on the passenger. The upper end of the armrest is provided with a rib extending obliquely downward toward the vehicle interior side on the lower surface thereof,
When the armrest body is pushed toward the outside of the passenger compartment at the time of a side collision of the automobile, the rib comes into contact with a slide surface extending obliquely downward toward the passenger compartment side provided on the door trim, and this slide surface The door trim armrest structure according to claim 1, wherein the upper end portion of the armrest body is moved upward by sliding along.

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