JP3376798B2 - Automotive upper body structure - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an upper body structure for an automobile.

[0002]

2. Description of the Related Art As a conventional upper body structure for an automobile,
For example, there is one described in Japanese Utility Model Laid-Open No. 3-5683. In such an upper body structure for an automobile, an assist grip supported by the body side inner panel and /
Or, if a larger load is applied to the body side inner panel than directly to the inside of the room, the impact load on the occupant may be large, and countermeasures against it must be taken. Therefore, for example, impact energy is absorbed by disposing a pad for absorbing impact energy between the surface of the body side inner panel and the trim member covering the surface of the body side inner panel.

[0003]

However, as described above, the pad for absorbing impact energy provided between the surface of the body side inner panel and the trim member covering the surface of the body side inner panel is not provided. Since there is a possibility that the impact energy absorption due to the secondary collision of the occupant's head may increase, it is necessary to use a considerably thick member in order to ensure safety. In such a case, the trim member as well as the pad for absorbing impact energy is located inside the interior of the body side panel for a considerable amount of time, which causes annoyance around the temporal region of the occupant, and improvement is desired. . Therefore, the present invention has been made in view of the above points, and an object of the present invention is to keep the impact energy absorption level due to the secondary collision of the head of the occupant at the conventional level while the trim member is a body. An object of the present invention is to provide an upper vehicle body structure for an automobile, in which the space around the temporal region of an occupant is enlarged by being close to the surface of the side inner panel.

[0004]

According to an upper body structure for an automobile of claim 1 of the present invention , a tongue-shaped member is formed on a part of a steel pad supported by the upper body .
The free end of the tongue-shaped member is formed by cutting and raising a surface.
The part is close to the general surface of the upper body,
On the surface of the steel pad, an
The cyst grip is supported, and the assist grip
Of the tongue-like member due to the downward load applied to the
It is characterized in that the free end is capable of contacting the general surface of the upper vehicle body .

According to a second aspect of the present invention, the steel pad is
The cut and raised traces of the tongue-shaped member are intermittently formed on the
Characterized by comprising been formed.

[0006]

[0007]

[0008]

As described above, according to the automobile upper body structure of claim 1 of the present invention, the free end portion of the tongue-shaped member once formed on the steel pad by the secondary collision of the passenger's head. Is pressed against the general surface of the upper body, and the acceleration change of the head shows the highest value in the vicinity of the secondary collision start time, and the tongue-shaped member bends near the secondary collision end time, Since the energy at the time of collision is absorbed, variations in absorption of impact energy are reduced. Further, since the impact energy absorbing means is a steel pad, the amount of protrusion from the upper vehicle body is small, and the space around the temporal region of the occupant can be increased.

Further , a downward load is applied to the assist grip.
When added, the free end of the tongue-shaped member is
Deformation of the steel pad by contacting the general surface of
Can be prevented.

Further, the tongue-shaped member is the steel pad.
Since it is cut and raised from the surface of the
No variation, and variation due to welding or other mounting means is unlikely to occur
It will be good.

According to a second aspect of the present invention, since the cut and raised traces of the tongue-like member are intermittently formed on the surface of the steel pad, the tuning of the level of impact energy absorption of the steel pad is performed. The tongue-like member is formed by cutting and raising marks, and in addition to the action described in claim 1 , it has an action and an effect that the development period can be shortened.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show an upper body structure for an automobile according to a first embodiment of the present invention. In the drawings, reference numeral 1 is an "upper vehicle body" in which a closed cross section is formed between the roof panel 3 and the roof panel 3 by being welded to the side end flanges 5 of the roof panel 3 by welding.
It is a side roof inner panel as. Code 11
Are upper and lower surfaces 13 and 15 of the side roof inner panel 1.
It is a steel pad supported by welding. Reference numeral 17 is a headlining as a trim member which is arranged so as to cover the general surface 19 of the steel pad 11 and the flange 7 of the side roof inner panel 1 from the interior 21 side. Reference numeral 23 indicates both flanges 5,
It has a structure in which the free end portion 25 of the head lining 17 is covered with a lip 27 by the garnish engaged with 7.

The general surface 19 of the steel pad 11
2, the tongue-shaped member 31 is cut and raised at a substantially right angle so that the side roof inner panel 1 has a free end 33 on the side of the general surface 29. The free end portion 33 of the tongue-shaped member 31 is pressed against the general surface 29 of the side roof inner panel 1 by applying a load F to the steel pad 11, so that the side roof inner panel 1 can be pressed.
It is formed so as to be close to the general surface 29. On the general surface 19 of the steel pad 11, cut-and-raised marks 37 of the tongue-shaped member 31 are formed intermittently in the longitudinal direction of the steel pad 11, and the head lining 17 is interposed to extend downward. An assist grip 35 capable of transmitting the load F is supported by bolts (not shown).

As described above, according to this embodiment,
When a load F is applied to the steel pad 11 by a so-called secondary collision in which the head lining 17 and / or the assist grip 35 are hit by an occupant's head (not shown) due to a vehicle collision, a so-called primary collision, etc. The portion 39 is transformed from the shape shown by the solid line in FIG. 3 to the shape shown by the chain double-dashed line. Due to the deformation of the leg portion 39, the free end portion 33 of the tongue-shaped member 31 of the steel pad 11 once becomes
It is pressed against the general surface 29 of the side roof inner panel 1. As a result, the acceleration change of the occupant's head exhibits the highest value near the secondary collision start time, and then the tongue-shaped member 31 near the secondary collision end time.
By bending from the base portion 41, the energy at the time of collision is absorbed, so that the variation in absorption of impact energy is reduced.

Further, since it is the impact energy absorbing means by the steel pad 11, the protrusion amount 43 from the general surface 29 of the side roof inner panel 1 is small, and the space around the temporal region of the occupant can be enlarged. Further, since the tongue-shaped member 31 is formed by being cut and raised from the general surface 19 of the steel pad 11, there is no increase in weight,
Variations due to attachment means such as welding are less likely to occur. Further, when a downward load F is applied to the assist grip 35, the free end portion 33 of the tongue-shaped member 31 comes into contact with the general surface 29 of the side roof inner panel 1 to prevent deformation of the steel pad 11. You can do it.
The impact energy absorption level of the steel pad 11 can be tuned by changing the interval between the cut and raised marks 37 of the tongue-shaped member 31 and the size of the cut and raised marks 37 themselves. , The development period can be shortened and the development cost can be reduced.

The above description has been made on the side roof inner panel 1.
Although the present invention is not limited to this, it goes without saying that the front roof inner panel and the rear roof inner panel are also within the scope of the present invention.

[Brief description of drawings]

FIG. 1 is a cross-sectional explanatory view of a vehicle upper body structure according to a first embodiment of the present invention.

FIG. 2 is a perspective explanatory view of a steel pad.

FIG. 3 is a cross-sectional operation explanatory view of the steel pad deformed by the load in FIG.

[Explanation of symbols]

1 Side roof inner panel as "upper body" 3 roof panel 5 Side flanges on the roof panel 7 Side roof inner panel flange 11 steel pad 13,15 Upper and lower surfaces of side roof inner panel 17 Headlining as a "trim member" 19 General surface of steel pad 21 Indoor 29 General surface of the side roof inner panel 31 Tongue-shaped member 33 Free end of tongue member 35 Assist grip 37 Cut and Raised Marks of Tongue Piece 39 Steel pad leg 41 Base of the tongue member

Front page continuation (72) Inventor Masahiro Takagi 2 Takara-cho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. (56) Reference JP-A-7-246953 (JP, A) JP-A-7-61304 (JP , A) JP 7-246951 (JP, A) JP 7-205730 (JP, A) JP 7-205660 (JP, A) JP 7-228201 (JP, A) JP 7-215148 (JP, A) JP-A-7-232583 (JP, A) Actual development 3-5683 (JP, U) Actual development 6-71234 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B62D 25/06 B60R 21/02

Claims (2)

(57) [Claims] 1. A tongue-shaped member is formed on a part of a steel pad supported by an upper vehicle body by cutting and raising a surface of the steel pad, and a free end of the tongue-shaped member is formed on the upper vehicle body. While being close to the general surface, an assist grip capable of transmitting a load downward is supported on the surface of the steel pad, and the downward load applied to the assist grip causes the tongue-shaped member to move. An upper body structure for an automobile, wherein a free end of the upper body can contact a general surface of the upper body. 2. The upper vehicle body structure for an automobile according to claim 1, wherein traces of cut-and-raised parts of the tongue-shaped member are intermittently formed on a surface of the steel pad. Upper body structure for.