JP3384432B2 - Deck cross member connection structure - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a connecting portion of a deck cross member of a vehicle body. 2. Description of the Related Art A deck cross member is disposed so as to straddle between left and right front pillars of a vehicle body, and its end is connected to an inner front pillar via an extension member. An example of the structure of the connecting portion of the deck cross member is disclosed in Japanese Utility Model Laid-Open No. 4-26878. In this connection structure, as shown in FIG. 4, extending portions 2a and 2b penetrating through holes 4a of the front pillar inner panel 4 of the front pillar 3 are attached to a deck support bracket 2 to which the end 1a of the deck cross member 1 is fixed. The end portions 2c and 2d of these extending portions 2a and 2b are welded to the back surface of the front pillar outer panel 5. [0003] However, in the above-mentioned joint structure, the extension portions 2a, 2b of the deck support bracket 2 extending through the front pillar inner panel 4 are provided.
Are welded to the inner surface of the front pillar outer panel 5, so that the vertical load applied to the deck cross member 1 must be received at the joint between the front pillar outer panel 5 and the extension portions 2 a and 2 b. . [0004] Generally, the joint of the deck cross member 1 to the front pillar 3 is set at a constricted portion apart from the main closed section formed by the inner panel 4 and the outer panel 5 of the front pillar 3. The outer panel 5 is easily deformed in the constricted portion, and it is difficult to secure sufficient rigidity. The present invention has been made in view of the above points, and an object of the present invention is to provide a deck cross member connecting portion structure in which surface rigidity of a front pillar to which an extension of a deck cross member is connected is increased. According to the present invention, in order to achieve the above object, a deck cross member provided so as to straddle between left and right front pillars penetrates an inner panel of the front pillars. A deck cross member connecting portion structure in which an extension provided so as to extend toward the outer panel is joined to a phosphorus hose disposed inside the outer panel at a predetermined interval from the outer panel; A highly rigid foam filler is sealed in the gap between the pillar outer panel and the phosphorus hose and hardened, thereby enhancing the surface rigidity of the joint to which the extension of the deck cross member is joined. The high-rigidity foam filler foams and hardens when heated, strengthens the surface rigidity of the joint to which the extension of the deck cross member is joined, and adheres to the reinforcement and the front pillar outer panel. Then, the two are firmly adhered. Thereby, the rigidity of the connecting portion of the deck cross member is improved. Embodiments of the present invention will be described below with reference to examples. FIG. 1 is a side view of a deck cross member mounting portion of a vehicle body to which the present invention is applied, FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1, and FIG. III
FIG. As shown in FIG. 1 to FIG.
0, a front pillar outer panel 12, a front pillar inner panel 13, and a front pillar reinforcement 14 arranged inside the front pillar outer panel 12 with a slight gap from the front pillar outer panel 12. It consists of. The front pillar outer panel 12 has a door hinge attachment portion (not shown). Then, the deck cross member 15 is horizontally arranged so as to straddle between the left and right front pillars 11, and extension portions at both ends are fixed to the left and right front pillars 11. The extension of the deck cross member 15 is constituted by a deck cross member bracket 16.
The deck cross member bracket 16 is constituted by tubular brackets 17 and 18. One of the brackets 17 has a hole 1 in which the cylindrical portion 17a is formed at the deck cross member mounting position of the front pillar inner panel 13.
The flange 17 b is welded to the front pillar reinforcement 14. The other bracket 18 has one side open end 18a which is fitted externally to the cylindrical portion 17a of the bracket 17 projecting from the front pillar inner panel 13 to the inside of the vehicle body, and has a peripheral portion 18b formed between the cylindrical portion 17a and the front pillar inner panel 13. It is welded and fixed to a flange 13b formed on the periphery of the hole 13a.
Thereby, the brackets 17 and 18 are fixed to form an integral structure. The deck cross member 15 has an end 15
a is fitted and fixed to the cylindrical portion 18a of the bracket 18 by welding. The front pillar reinforcement 14 is
A swelling portion 14a swelling toward the front pillar outer panel 12 is formed slightly outside the outer periphery of the flange 17b of the bracket 17. The swelling portion 14a is fixed to the front pillar outer panel 1 by an adhesive.
2, the thermosetting high-rigidity foam filler 19 is provided in the gap between the front pillar outer panel 12 and the front pillar reinforcement 14 defined by the bulging portion 14a. Is filled. The high-rigidity foamed filler 19 foams and hardens when heated,
The front pillar outer panel 12 and the front pillar reinforcement 14 are firmly adhered to each other. Examples of the high-rigidity foam filler 19 include those shown in Table 1. Table 2 shows a comparative example of physical properties between the high-rigidity foam filler and a normal foam filler. [Table 1] [Table 2] The operation will be described below. The vehicle body 10 includes the deck cross member 15 and the deck cross member bracket 1.
6 and is fixed to the front pillar reinforcement 14 of the front pillar 11 and has a high rigidity foam filler 19.
Is transported to the coating process in a state where is filled, and heated at the time of coating. The high-rigidity foam filler 19 foams and hardens when heated, and firmly adheres to the front pillar outer panel 12 and the front pillar reinforcement 14. As a result, the same effect as when the plate thickness of the front pillar outer panel 12 at the relevant portion is substantially increased is obtained, the surface rigidity is increased, and the rigidity of the joint portion of the deck cross member 15 is greatly improved. Moreover, the high-rigidity foam filler 19 is lightweight and does not cause an increase in the weight of the vehicle body. As described above, according to the present invention, the surface rigidity of the front pillar outer panel, which is the joining surface of the deck cross member, can be improved, and the front pillar outer panel can be connected to the deck cross member. The part is lightly and strongly reinforced, and the rigidity is greatly improved. Thus, the vertical vibration of the deck cross member is reduced, and the vibration of the handle supported by the deck cross member is reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a main part of a vehicle body to which a deck cross member connecting portion structure according to the present invention is applied. FIG. 2 is a sectional view taken along the line II-II in FIG. FIG. 3 is a sectional view taken along the line III-III in FIG. 1; FIG. 4 is a cross-sectional view showing a main part of a conventional deck cross member connecting portion structure. DESCRIPTION OF SYMBOLS 10 Vehicle body 11 Front pillar 12 Front pillar outer panel 13 Front pillar inner panel 14 Front pillar reinforcement 15 Deck cross member 16 Deck cross member brackets 17, 18 Bracket 19 High rigidity foam filler

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masaneshi Yamane 5-33-8 Shiba, Minato-ku, Tokyo Inside Mitsubishi Motors Corporation (72) Inventor Susumu Nishimoto 5-33-8 Shiba, Minato-ku, Tokyo Inside Mitsubishi Motors Corporation (56) References JP-A-8-198995 (JP, A) JP-A-5-65079 (JP, A) Japanese Utility Model 63-108870 (JP, U) Japanese Utility Model 63 37476 (JP, U) Japanese Utility Model Showa 62-128975 (JP, U) Japanese Utility Model 1-59780 (JP, U) Japanese Utility Model 63-133472 (JP, U) Japanese Utility Model Showa 63-26485 (JP, U) Shokai Sho 61-169745 (JP, U) Shokai Hei 4-26878 (JP, U) Shokai Hei 6-47271 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B62D 25/08 B62D 25/04

Claims (1)

(57) [Claim 1] A deck cross member provided so as to straddle between left and right front pillars, penetrates an inner panel of the front pillars, and extends toward an outer panel. An extension portion is a deck cross member connecting portion structure joined to a phosphorus hose disposed inside the outer panel at a predetermined interval from the outer panel, wherein a high rigid foam filling is performed in a gap between the outer panel and the phosphorus hose. A deck cross member connecting portion structure, wherein a material is encapsulated and cured to enhance the surface rigidity of a connecting portion to which the extension portion of the deck cross member is connected.