JP3767001B2 - Car side door structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a side door structure of an automobile, and more particularly to a structure in which a shock absorbing effect of a shock absorbing member provided inside a side door is ensured while a shock absorbing deterioration due to a highly rigid portion such as an armrest is prevented. .
[0002]
[Prior art]
Recently, in order to enhance the protection of the occupant at the time of a side collision when the vehicle collides from the side of the automobile, a technique of providing an impact bar in the side door and a pad member such as a synthetic resin foam is being adopted. The said pad member is normally arrange | positioned in the height position corresponding to a passenger | crew's waist. When this pad member is not provided, the outer panel is crushed during a severe side impact and reaches the inner panel through the parts arranged in the door, and at the next moment, the inner panel passes through the door trim to the passenger in the vehicle interior. Due to the collision, the impact force on the occupant acts with a delay. On the other hand, in the case of providing a pad member, the pad pressed by the outer panel at the time of a side collision is an opening opened in the inner panel, and the outer panel passes through the door trim as described above. The occupant is pressed early before contacting the inner panel. That is, the collision load is transmitted to the occupant at an early stage, and the impact load is sufficiently absorbed by the pad, so that the impact force acting on the occupant is remarkably reduced.
[0003]
On the other hand, an armrest is usually provided on the inner surface of the side door, but the armrest is configured to be highly rigid compared to other parts due to its structure. In Japanese Utility Model Publication No. 6-74426, in order to relieve the load acting on the occupant from the armrest at the time of a side collision, the armrest core material is configured in a frame shape with a thin bar, or a plurality of openings or Techniques have been proposed in which a slit is formed to reduce the impact of the armrest by reducing the rigidity of a predetermined portion.
[0004]
[Problems to be solved by the invention]
Even if a pad member is provided in the side door as described above, if there is a highly rigid armrest on the inner surface of the side door, the armrest is difficult to deform during a side collision, so the door trim is difficult to deform, and the impact of the pad member There is a problem that the absorption action is significantly reduced.
An object of the present invention is to make it possible to sufficiently exert the shock absorbing action of the pad member, and to prevent the shock absorbing action from being lowered at a highly rigid portion such as an armrest.
[0005]
[Means for Solving the Problems]
The side door structure of the automobile according to claim 1 is provided in the door trim of the side door in the side door including the outer panel, the inner panel, and the door trim, which are provided in order from the vehicle outer side of the automobile, and at least in the vehicle width direction. A highly rigid armrest that has a shelf-like horizontal wall and is formed so as to protrude toward the vehicle interior, and is fixed to the door trim inside the side door below the horizontal wall of the armrest. The door trim side shock absorbing member that absorbs the impact acting on the occupant from the side door at the time of a side collision, and the door trim side shock absorbing member arranged side by side in the vehicle width direction inside the side door on the outer panel side from the door trim side shock absorbing member A vehicle outer side shock absorbing member, and a lower side of a horizontal wall portion of the armrest portion in the door trim. The door trim side shock absorbing member is moved to the vehicle interior side early while relaxing on the wall portion and extending in the front-rear direction above the door trim side shock absorbing member. It is characterized in that a breakage portion is formed. The impact that acts on the occupant from the armrest when a side collision occurs on the vertical wall below the horizontal wall of the armrest and is formed so as to extend in the front-rear direction above the door trim side impact absorbing member. Since the door trim side shock absorbing member is moved to the vehicle interior side early while relaxing, the shock to the occupant by the highly rigid armrest portion at the time of a side collision can be surely relieved and the shock absorption can be improved.
[0006]
The side door structure of the automobile according to claim 2 is provided in the door trim of the side door in the side door provided with the outer panel, the inner panel, and the door trim provided in order from the vehicle outer side of the automobile, and at least in the vehicle width direction. A highly rigid armrest that has a shelf-like horizontal wall and is formed so as to protrude toward the vehicle interior, and is fixed to the door trim inside the side door below the horizontal wall of the armrest. And a door trim side impact absorbing member that absorbs an impact acting on the occupant from the side door at the time of a side collision, and the door trim is composed of a base material on the door inner side and a skin material on the passenger compartment side, door trim so as to reduce impact acting on the passenger from the armrest side collision, the openings formed in the front Kimoto material in the horizontal wall portion of the armrest A first fragile portion formed by covering with a skin material, and a vertical wall portion below a horizontal wall portion of the armrest portion, which is positioned above the door trim side shock absorbing member and extends in the front-rear direction. It has the 2nd weak part which consists of a fracture | rupture part made | formed. It is characterized by the above-mentioned. Since the first fragile portion and the second fragile portion are provided in the door trim, it is possible to further reliably reduce the impact on the occupant by the highly rigid armrest portion at the time of a side collision, and further improve the shock absorption.
[0007]
[0008]
Automobile side door structure according to claim 3 is the invention of claim 1 or 2, wherein the fracture portion, it formed into an upper part near the lower vicinity of the ledge trim substrate side door It is characterized by. Side collision, the outer panel, inner panel, breaking the shock absorbing member through the deformation of the door trim and the like when moving into the passenger compartment, which is formed into an upper vicinity of the ledge of the trim substrate and the lower part near Since the portion is broken or deformed, the shock absorbing member is easily moved toward the inside of the vehicle interior, so that the shock absorbing action of the shock absorbing member can be ensured.
[0009]
The side door structure for an automobile according to claim 4 is the invention according to claim 3 , wherein the fracture portion is a plurality of slit portions formed in a trim base material at a notched portion of a door trim of the side door. . Therefore, at the time of a side collision, when the shock absorbing member moves to the vehicle compartment side through deformation of the outer panel, the inner panel, the door trim, etc., the rupture portions which are a plurality of slit portions formed in the door trim at the creased portion of the door trim. It breaks easily .
[0010]
According to a fifth aspect of the present invention, in the vehicle side door structure according to any one of the first to fourth aspects, the impact absorbing member is a pad member. The pad member that is the impact absorbing member is made of, for example, a synthetic resin foam, and this pad member can sufficiently protect the occupant's waist during a side collision.
[0011]
According to a sixth aspect of the present invention, there is provided a side door structure for an automobile according to the fifth aspect of the invention, wherein the pad member is provided in a state where a door glass lifting space is provided between the outer panel and the trim base material of the inner surface of the side door. It is characterized by that. Therefore, at the time of a side collision, the deformation of the outer panel is reliably transmitted to the trim base material on the inner surface portion of the side door via the pad member, and the impact acting on the occupant is reliably absorbed or alleviated.
[0012]
The side door structure for an automobile according to claim 7 is the invention according to claim 5 or 6 , wherein the pad member includes a first pad member on the inner panel inner side, a second pad member on the outer panel side of the inner panel, and a trim base material. A third pad member on the inner panel side. As described above, since the pad member is thick as much as the total thickness of the first to third pad members, the shock absorption is excellent, and the first to third pad members can be easily assembled .
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
This embodiment is an example when the present invention is applied to a left side door on the front side of an automobile. Hereinafter, front and rear and right and left of the automobile will be described as front and rear and right and left.
As shown in FIGS. 1 and 2, the door body of the left side door 1 on the front side of the automobile is composed of an outer panel 2, an inner panel 3, a door trim 4, and the like, and is lifted and lowered by a window regulator (not shown). A door glass 5 is also provided, and an armrest portion 10 that is a shelf-like portion is formed on the inner surface of the side door 1, and a recess 11 for inserting a hand for opening and closing the door is formed on the front portion of the armrest portion 10. Has been.
[0014]
As shown in FIGS. 2 and 7, the door trim 4 includes a base 12 made of wood chip, a buffer layer 13 made of a synthetic resin foam film on the inner surface thereof, and skin materials 14 a and 14 b, and includes an armrest portion 10. The lower skin material 14a is, for example, a synthetic resin film, and the upper skin material 14b above the armrest portion 10 is, for example, leather. Since the armrest part 10 is formed in a substantially horizontal shelf shape having a predetermined width, the armrest part 10 is a highly rigid part having high rigidity at least in the vehicle width direction.
[0015]
Inside the side door 1, an impact bar 6 made of a tube material is provided in the front-rear direction to increase rigidity against a side collision in which an external vehicle collides with the side door 1. The part is fixed to the door body.
As shown in FIG. 2, at the position in the front-rear direction corresponding to the waist part of the seated occupant and lower than the armrest part 10, the side door 1 has an impact acting on the occupant's waist part during a side collision. A shock absorbing member 15 made of a synthetic resin foam for relaxation is disposed in a state where a lift space 16 of the door glass 5 is opened.
[0016]
The shock absorbing member 15 includes a block-shaped first pad member 15a along the inner surface of the outer panel 2, and a block-shaped first pad that is positioned on the substantially outer surface side of the inner panel 3 and is inserted into the opening hole of the inner panel 3. It consists of a 2-pad member 15b and a block-shaped third pad member 15c fixed to the outer surface of the door trim 4 by bonding. Also, a synthetic resin for reducing the impact acting on the side of the occupant's chest during a side collision between the inner panel 3 and the door trim 4 in the front-rear direction position corresponding to the seated occupant and above the armrest portion 10 A fourth pad member 15d made of foam is provided, and the fourth pad member 15d is fixed to the outer surface of the door trim 4 by adhesion. The first and second pad members 15a and 15b correspond to the vehicle outer side shock absorbing member, and the third pad member 15c corresponds to the door trim side shock absorbing member.
[0017]
As shown in FIGS. 2 and 3, there is provided a substantially U-shaped holding member 17 made of a thin steel plate for attaching the first pad member 15 a to the impact bar 6, and a pair of front and rear attachments of the holding member 17. The portion 17a is fixed to the impact bar 6 by welding or a screw, and the first pad member 15a is held in a state in which the outer circumferential portion of the holding member 17 is embedded in the outer surface portion of the first pad member 15a. . In addition, the holding member 17 may be configured by two parts having an L shape in a side view, or may be configured in another shape.
[0018]
As shown in FIGS. 2 and 4, in order to attach the second pad member 15 b to the inner panel 3, a pair of upper and lower holding members 18, 19 made of a thin steel plate are provided, and the inner peripheral side of the upper holding member 18 The half-width portion is embedded in the upper outer surface portion of the second pad member 15b, and the mounting portion 18a of the holding member 18 is fixed to the inner surface of the inner panel 3 by screws or welding, and the lower holding member 19 is fixed. The inner peripheral side half-width portion is embedded in the lower outer surface portion of the second pad member 15b, and the mounting portion 19a of the holding member 19 is fixed to the inner surface of the inner panel 3 by screws or welding, thereby A two-pad member 15b is attached to the inner panel 3. And the raising / lowering space 16 of the door glass 5 is vacated between the 1st pad member 15a and the 2nd pad member 15b.
[0019]
Next, a description will be given of an impact mitigation portion for reducing the rigidity of the armrest portion 10 and mitigating an impact that acts on the occupant from the high rigidity portion in a side collision. As shown in FIG. 2 and FIG. 5 to FIG. 7, the first impact mitigating portion 20, which is a fragile portion for reducing the rigidity of the armrest portion 10 and moving the shock absorbing member 15 to the passenger compartment side at the time of a side collision at an early stage. As a rectangular opening 21 formed in the base 12 of the door trim 4 and having the same length as the recess 11 is formed in the rear portion of the recess 11 in the armrest 10. The opening 21 is closed without increasing the rigidity by the lid member 22 made of a thin steel plate. Cut-and-raised pieces 22a cut and raised downward are formed at three locations on the outer periphery of the lid member 22, and the lid member 22 is held at a predetermined position by fitting these three cut-and-raised pieces 22a into the opening 21. The surface side of the lid member 22 is covered with the buffer layer 13 and the skin material 14b.
[0020]
As shown in FIGS. 2, 5, and 7, the second portion is a fragile portion (breaking portion) for reducing the rigidity of the armrest portion 10 and for quickly moving the shock absorbing member 15 to the vehicle compartment side at the time of a side collision. As the impact relaxation portion 30, five slit portions 31 formed in the base material 12 at the cut-in portion of the door trim 4 at the lower end portion of the armrest portion 10, and the base material at the cut-in portion of the door trim 4 at the upper end of the armrest recess 10a. The five slit parts 32 formed in 12 are provided. The slit portion 31 is a slit of a predetermined length opened in the base material 12, and is formed into a fragile portion by forming the five slit portions 31 in a line arranged at small intervals in the front and rear, and at the time of a side collision When the side impact load acts on the door trim 4 via the impact absorbing member 15, the fragile portion including the five slit portions 31 is easily broken. Further, the slit portion 32 has the same structure as the slit portion 31, and by forming the five slit portions 32 in a single line arranged at small intervals in the front and rear, the shock absorbing member 15 is moved to the vehicle compartment side at the time of a side collision. It is configured as a vulnerable part for early movement.
[0021]
Next, the operation and effect of the side door structure of the automobile described above will be described.
At the time of a side collision, the bumper of the opponent's car collides with the level of the impact bar 6 and the impact absorbing member 15 of the side door 1, but when the outer panel 2 and the impact bar 6 are deformed inward when the side collision load is large. The shock absorbing member 15, the inner panel 3, and the door trim 4 are deformed toward the passenger compartment while absorbing the shock with the shock absorbing member 15, and a light side impact load buffered by the occupant acts at an early stage. The safety to the department is greatly improved.
[0022]
In addition, during the side collision, the five slit portions 31 at the lower end of the highly rigid armrest portion 10 are broken, and the portion of the door trim 4 below the armrest portion 10 is easily displaced toward the passenger compartment side. Since the light side impact load buffered by the impact absorbing member 15 acts on the occupant at an early stage, the impact absorbing function of the impact absorbing member 15 can be sufficiently exerted, and the impact absorbability is remarkably improved. Similarly, when the side collision occurs, the upper five slit portions 32 of the high-rigid armrest portion 10 are broken, and the fourth pad member 15d is easily displaced toward the passenger compartment, so that the impact of the fourth pad member 15d is reduced. The absorption action can be sufficiently exerted.
[0023]
In addition, even when the high-rigidity armrest portion 10 moves toward the passenger compartment and collides with the vicinity of the occupant's flank during the side collision, the first impact relaxation portion 20 is configured as a fragile low-rigidity portion. The impact acting on the occupant from the armrest portion 10 is remarkably reduced.
[0024]
Here, a modified example of the embodiment will be described. The armrest portion 10 may be formed to protrude from the inner surface portion of the door trim, and the shape, material, and mounting structure of the pad members 15a to 15c of the shock absorbing member 15 are as follows. It is not limited to the said embodiment, What is necessary is just to comprise so that a side impact load can be absorbed.
[0025]
【The invention's effect】
According to the first aspect of the present invention, the door trim side impact absorbing member is fixed to the door trim inside the side door below the horizontal wall portion of the armrest portion, and absorbs the impact acting on the occupant from the side door at the time of a side collision. A door trim side shock absorbing member and a vehicle outer side shock absorbing member arranged side by side in the vehicle width direction inside the side door on the outer panel side from the door trim side shock absorbing member, and the horizontal wall portion of the armrest portion in the door trim Located on the lower vertical wall, located above the door-trim-side impact absorbing member and extending in the front-rear direction. Since the breaking part for early movement was formed, the breaking part alleviated the impact acting on the occupant from the armrest part at the time of a side collision, and the impact Order to quickly move the yield member into the vehicle interior side, it can impact reliably mitigate against the occupant by the armrest of the high stiffness in side impact, enhancing the shock absorption.
[0026]
According to the invention of claim 2, the door trim side impact absorbing member is fixed to the door trim inside the side door below the horizontal wall portion of the armrest portion and absorbs the impact acting on the occupant from the side door at the time of a side collision. The door trim is composed of a base material on the inner side of the door and a skin material on the passenger compartment side, and the door trim is provided on the horizontal side of the armrest portion so as to alleviate the impact acting on the occupant from the armrest portion in the case of a side collision. A first fragile portion formed by covering the opening formed in the base material with a skin material in the wall portion, and a vertical wall portion below the horizontal wall portion of the armrest portion, located above the door trim side shock absorbing member And a second fragile portion formed of a rupture portion formed so as to extend in the front-rear direction, so that the impact to the occupant by the highly rigid armrest portion at the time of a side collision can be more reliably mitigated, and the shock absorption It is possible to increase in La.
[0027]
[0028]
According to the invention of claim 3, breaking unit, because it was formed into an upper part near the lower vicinity of the ledge trim substrate side door, the side collision, the outer panel, inner panel, door trim when the shock absorbing member through the deformation moves into the passenger compartment side of the breaking portion formed in an upper part near the lower vicinity of the ledge of the trim substrate with or deformed broken, Since the shock absorbing member can easily move toward the vehicle interior, the shock absorbing action of the shock absorbing member can be ensured.
[0029]
According to invention of Claim 4 , since the said fracture | rupture part is a some slit part formed in the trim base material in the crease | crimped part of the door trim of a side door, at the time of a side collision, it deform | transforms an outer panel, an inner panel, etc. Accordingly, a plurality of slit portions ( rupture portions ) formed on the trim base material are broken, the deformation of the door trim is promoted, and the shock absorbing member moves to the vehicle compartment side early .
[0030]
According to the invention of claim 5 , since the impact absorbing member is a pad member, the pad member can sufficiently protect the occupant's waist during a side collision.
[0031]
According to the invention of claim 6 , since the pad member is provided in a state in which a door glass elevating space is opened between the outer panel and the trim base material of the inner surface portion of the side door, the outer panel is provided at the time of a side collision. This deformation is reliably transmitted to the trim base material on the inner surface of the side door via the pad member, and the impact acting on the occupant is reliably absorbed and alleviated.
[0032]
According to the invention of claim 7, the pad member has a first pad member on the inner surface side of the outer panel, a second pad member on the outer panel side of the inner panel, and a third pad member on the inner panel side of the trim base material. Therefore, since the pad member is thick only by the total thickness of the first to third pad members, the shock absorption is excellent, and the first to third pad members can be easily assembled .
[Brief description of the drawings]
FIG. 1 is a perspective view of a side door of an automobile according to an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of a side door.
FIG. 3 is a perspective view of a first pad member and its mounting structure.
FIG. 4 is a perspective view of a second pad member and a holding member for attaching the second pad member.
FIG. 5 is a perspective view showing the main part of the inner surface of the side door.
FIG. 6 is a perspective view of a first impact relaxation portion.
FIG. 7 is a longitudinal sectional view of an armrest portion and a portion in the vicinity thereof.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Car side door 2 Outer panel 3 Inner panel 4 Door trim 10 Armrest part 12 Base material 15 Impact absorption member 15a First pad member 15b Second pad member 15c Third pad member 20 First impact relaxation part (first weak part)
21 Opening hole 22 Lid member 30 2nd impact relaxation part (2nd weak part)
31 Slit part 32 Slit part

Claims (7)

In the side door provided with the outer panel, the inner panel, and the door trim, which are provided in order from the vehicle outer side of the automobile,
A high-rigidity armrest portion provided on the door trim of the side door, having a horizontal wall portion that is at least shelf-shaped in the vehicle width direction, and formed so as to protrude toward the vehicle interior side;
From the door trim side shock absorbing member, which is fixed to the door trim inside the side door below the horizontal wall portion of the armrest portion and absorbs the impact acting on the occupant from the side door at the time of a side collision, and the door trim side shock absorbing member A door trim side shock absorbing member and a vehicle outer side shock absorbing member provided side by side in the vehicle width direction inside the side door on the outer panel side;
The vertical wall portion of the lower side of the horizontal wall portion of the armrest portion in the door trim, extending Beauty in the longitudinal direction and located above the said door trim side shock absorbing member, the impact acting on the passenger from the armrest side collision A side door structure for an automobile, in which a break portion for moving the door trim side shock absorbing member to the vehicle interior side early is formed while relaxing. In the side door provided with the outer panel, the inner panel, and the door trim, which are provided in order from the vehicle outer side of the automobile,
A high-rigidity armrest portion provided on the door trim of the side door, having a horizontal wall portion that is at least shelf-shaped in the vehicle width direction, and formed so as to protrude toward the vehicle interior side;
A door trim side shock absorbing member that is fixed to a door trim on the inner side of the side door below the horizontal wall portion of the armrest portion and absorbs an impact acting on the occupant from the side door at the time of a side collision,
The door trim consists of a base material on the door inner side and a skin material on the passenger compartment side,
The door trim is formed by covering an opening formed in the base material with the skin material in a horizontal wall portion of the armrest portion so as to alleviate an impact acting on the occupant from the armrest portion in a side collision. 1st weak part and the 2nd weak part which consists of a fracture | rupture part formed in the vertical wall part below the horizontal wall part of the said armrest part so that it may be located above the said door trim side impact-absorbing member and may be extended in the front-back direction A side door structure of an automobile characterized by comprising: The side door structure for an automobile according to claim 1 or 2, wherein the fracture portion is formed in an upper vicinity portion and a lower vicinity portion of a shelf-like portion of the trim base material of the side door. 4. The side door structure for an automobile according to claim 3, wherein the fracture portion is a plurality of slit portions formed in a trim base material at a notched portion of a door trim of the side door. The side door structure for an automobile according to any one of claims 1 to 4 , wherein the shock absorbing member is a pad member. 6. The side door structure for an automobile according to claim 5 , wherein the pad member is provided in a state in which a door glass elevating space is left between the outer panel and the trim base material of the inner surface portion of the side door. The plurality of pad members include a first pad member on the inner panel inner surface side, a second pad member on the outer panel side of the inner panel, and a third pad member on the inner panel side of the trim base material. The side door structure of the automobile according to 5 or 6 .

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