JPH0447009Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a center pillar lower structure in an automobile, and specifically relates to a center pillar lower structure in a van type automobile or a pickup type automobile.

(Prior Art) In conventional van-type automobiles, a seat belt retractor is generally installed at a mid-height position of a center pillar. At the intermediate height position, the retractor is fitted into a common mounting window formed in the pillar inner and the reinforcing plate, and the retractor is attached to the pillar inner and the reinforcing plate.

(Problem to be solved by the invention) However, the rigidity of the pillar inner at the middle height position of the center pillar is lower than the rigidity of the joint part with the lower pillar inner lower, and it is not reinforced by a reinforcing plate. However, the retractor support tends to be insufficient. That is, the retractor itself has a fairly large load, and in addition, a large force is applied when the webbing is wound up and fed out, making the retractor support unstable.

Furthermore, although increasing the rigidity at the middle height position of the center pillar is an important issue, it is unreasonable to provide a mounting window in the pillar inner and reinforcing plate at that position as described above.

(Means for solving the problems) The present invention aims to solve the above problems and increase the rigidity and strength of the lower part of the center pillar. In the inner member composed of a pillar inner and a pillar inner lower joined to the lower part thereof, a reinforcing plate is joined between the pillar outer and the pillar inner, and this reinforcing plate is extended downward to the pillar inner lower installation position, While the joint portion between the pillar inner and the pillar inner lower and the extension portion are overlapped and joined, mounting windows for a seat belt retractor are formed at corresponding positions in the lower part of the pillar inner and the lower part of the reinforcing plate, and these mounting windows A seatbelt retractor is fitted in the seatbelt retractor, and the seatbelt retractor is attached to the pillar inner and the reinforcing plate.

(Function) According to the above configuration, mounting windows for the seat belt retractor are formed at corresponding positions in the lower part of the pillar inner and the lower part of the reinforcing plate, the retractor is fitted in these mounting windows, and the retractor is connected to the pillar inner and the lower part of the reinforcing plate. Since it is attached to the reinforcing plate, the retractor can be stably and firmly supported at the lower part of the center pillar (near the joint between the pillar inner and the pillar inner lower), which has high rigidity.

Further, the reinforcing plate is formed to extend to the pillar inner lower installation position, and the joint between the pillar inner and the pillar inner lower is overlapped and joined to the extension, so that the lower part of the center pillar is connected to the extension. As a result of being able to reinforce, the rigidity of the lower part of the center pillar,
Strength increases.

Furthermore, since there is no need to provide a retractor mounting window at the intermediate height position of the center pillar, the rigidity of the center pillar at this portion can be increased. On the other hand, the lower part of the center pillar is constructed to have high rigidity and strength as described above.
It is reasonable to open a retractor installation window in this part.

As described in the embodiments, there is also the advantage that spot welding between pillar inners, pillar inner lowers, reinforcing plates, etc. can be easily performed using the mounting windows.

(Embodiment) In the first embodiment shown in FIGS. 1 to 3, 1 is a pillar outer that constitutes an outer member of center pillar A, and 2 and 3 are a pillar inner and a pillar inner lower that constitute inner members of center pillar A. The pillar inner lower 3 is joined to the lower part of the pillar inner 2.

Between pillar outer 1 and pillar inner 2,
A reinforcing plate 4 whose both side edges are joined by spot welding is disposed at each flange portion. This reinforcing plate 4 is extended downward to the position where the pillar inner lower 3 is disposed, and in this embodiment, this extended portion 4a is integrally formed with the same steel plate as the reinforcing plate main body 4b.

The extension portion 4a is superimposed on the back surface of the joint portion 5 between the pillar inner 2 and the pillar inner lower 3, and the three are joined together by spot welding S. Further, mounting windows 7 and 8 for the seat belt retractor 6 are formed at corresponding positions in the lower part of the pillar inner 2 and the lower part of the reinforcing plate 4, respectively, and the retractor 6 is fitted into these mounting windows 7 and 8, and Attach the lower flange 9 of the retractor 6 to the bolt/nut 1
The flange upper part 12 is attached to the reinforcing plate 4 using tapping screws 13.
The mounting windows 7 and 8 can be used as a spot gun insertion port when performing the spot welding S.

The pillar outer 1, the pillar inner 2, and the reinforcing plate 4 are each connected to a leaf side rail (not shown) at the upper end. Further, in FIG. 1, reference numeral 14 represents a webbing that is wound around the retractor 6.

In the second embodiment shown in FIGS. 4 and 5, the main body 4b and the extension 4a of the reinforcing plate 4 are molded using different steel plates, and the two are joined together. For this joining, it is preferable to overlap the lower end of the reinforcing plate main body 4b, the upper end of the extension part 4a, and the lower end of the pillar inner 2 as shown in FIG. 4, and to join them integrally using spot welding S. It is.
Further, in this embodiment, the upper end of the pillar inner lower 3 is joined to the lower end of the pillar inner 2 using plug welding P.

Since the other configurations of this embodiment are basically the same as those of the first embodiment, their explanation will be omitted and the common reference numerals will be used in FIGS. 4 and 5.

(Effects of the invention) Since the present invention has the above-mentioned structure and function, the support of the seat belt retractor becomes stable and strong, and the rigidity and strength of the center pillar intermediate height position and the lower part of the center pillar can be increased. effective.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view of the first embodiment of the present invention, and the second
The figure is a partially cutaway perspective view, Figure 3 is an exploded perspective view of the main components, Figure 4 is a vertical sectional view of the second embodiment of the present invention, and Figure 5 is its components. FIG. 2 is a partially exploded perspective view. 1...Pillar outer, 2...Pillar inner, 3
...Pillar inner lower, 4...Reinforcement plate, 4a...
Reinforcement plate extension, 4b...Reinforcement plate main body, 6...Seat belt retractor, 7, 8...Mounting window.

Claims (1)

[Scope of utility model registration request] In a structure in which the outer member of the center pillar is composed of a pillar outer, and the inner member of the center pillar is composed of a pillar inner and a pillar inner lower joined to the lower part of the pillar, a reinforcing plate is joined between the pillar outer and the pillar inner, and this reinforcement While extending the plate downward to the pillar inner lower installation position, overlapping and joining the joint between the pillar inner and the pillar inner lower and the extension part, the corresponding positions of the lower part of the pillar inner and the lower part of the reinforcing plate are respectively A lower part of a center pillar in an automobile, characterized in that mounting windows for a seatbelt retractor are formed in the mounting windows, the seatbelt retractor is accommodated in the mounting windows, and the seatbelt retractor is attached to the pillar inner and the reinforcing plate. structure.