JPH0930444A - Connected part structure of pillar and side sill - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the rigidity of a side sill without bringing about an increase in a weight or costs regarding the connected part structure of a pillar and the side sill. SOLUTION: A pillar 1 having a seat belt retractor 3 for taking up a seat belt 4 in an inner part lower direction is arranged roughly in a vertical direction, a side sill 2 connected to the lower end of the pillar 1 is arranged in a car longitudinal direction, a step part 6 for preventing the interference of the seat belt retractor 3 is formed on the pillar 1 connecting part of the side sill 2 and a recessed groove 7 for securing the rigidity of the side sill 2 in the car longitudinal direction is provided in the step part 6 along the car longitudinal direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for connecting a pillar and a side sill, which is suitable for use in a vehicle body structure such as an automobile.

[0002]

2. Description of the Related Art Conventionally, in a vehicle body structure of an automobile or the like, a vehicle body structure in which a pillar is provided between a roof rail and a side sill and these are joined by welding or the like has been widely adopted. Here, as an example of such a vehicle body structure, a structure of a connecting portion between a conventional pillar and a side sill will be described with reference to the drawings. FIG. 5 shows a connecting portion between such a conventional pillar 1 and a side sill 2. Schematic perspective view,
FIG. 6 is a sectional view taken along line AA in FIG.

As shown in FIGS. 5 and 6, a side sill 2 is arranged in the vehicle length direction. Further, a center pillar 1 is arranged in a substantially vertical direction, and a lower end of the center pillar 1 is joined to a side sill 2 by welding or the like. The center pillar 1 includes a center pillar outer panel 1A and a center pillar inner panel 1 as shown in FIG.
B. These panels 1A and 1B are joined to each other by spot welding or the like, whereby the center pillar 1 is formed into a substantially closed cross section so that a space is formed therein.

Inside the center pillar 1, a seat belt retractor 3 as shown is arranged. The seatbelt retractor 3 is for winding up and storing an extra portion of the seatbelt 4 on the front seat side and the seatbelt 4 when the seatbelt is not used, and a reel 3A for winding up the seatbelt 4. And this reel 3A
And a bracket 3B for supporting and mounting in the center pillar 1.

The seat belt retractor 3 is arranged at a position as low as possible so that the seat belt 4 can surely restrain and protect the occupant even when a large impact force is applied to the vehicle due to an accident or the like. It is desirable to do. This is because higher rigidity can be obtained closer to the side sill 2 and safety can be improved. Therefore, as shown in FIG. 6, the bracket 3B is arranged near the side sill 2 and is fastened to the center pillar inner panel 1B and the side sill 2 by bolts 5 or the like. In such a joint portion structure, as shown in FIG. 5, a step portion 6 for avoiding interference of the seat belt retractor 3 is formed at the joint portion of the center pillar 1 of the side sill 2.

[0006]

However, when the step portion 6 as described above is provided on the side sill 2, the ridgeline of the side sill 2 becomes discontinuous, and the rigidity of the side sill 2 may be reduced. . When the rigidity of the side sill 2 is reduced in this manner, local deformation occurs in the stepped portion 6 when a bending moment is input to the side sill 2, and as a result, the cross section of the side sill 2 is easily deformed. .

Therefore, it is conceivable that the rigidity of the side sill 2 is reduced by adding a lean hose to the side sill 2 or providing a rib to reinforce the side sill 2, but such a measure would increase the cost. However, there is a problem that it causes an increase in weight. Incidentally, JP-A-64-5016
Japanese Unexamined Patent Publication 7 discloses a technique for increasing the rigidity of the lower part of the pillar, but this technique does not increase the rigidity of the side sill itself and cannot solve the above problems.

The present invention was devised in view of the above problems, and provides a joint structure between a pillar and a side sill, which can improve the rigidity of the side sill without increasing the weight and the cost. With the goal.

[0009]

For this reason, the connecting portion structure of the pillar and the side sill of the present invention according to claim 1 is arranged in a substantially vertical direction, and a seat belt for winding up a seat belt is provided below the inside thereof. In order to avoid interference with the seat belt retractor, a pillar having a belt retractor and a side sill arranged in the vehicle length direction so as to be coupled to a lower end of the pillar are provided, and the upper surface of the pillar coupling portion of the side sill is prevented from interfering with the seat belt retractor. A stepped portion is formed, and a recessed groove that secures rigidity of the side sill in the vehicle length direction is provided in the stepped portion along the vehicle length direction.

According to a second aspect of the present invention, there is provided a pillar-side sill connecting portion structure, which is arranged in a substantially vertical direction and has a seat belt retractor for winding a seat belt inside the pillar. , A side sill arranged in the vehicle length direction so as to be coupled to a lower end of the pillar, and a step portion for avoiding interference with the seat belt retractor is formed on an upper surface of a pillar coupling portion of the side sill, The entire stepped portion is configured as a reinforcing rib that strengthens the rigidity of the entire side sill.

According to a third aspect of the present invention, in addition to the structure of the second aspect, the reinforcing rib extends in the vehicle length direction, and the seat belt has a structure in which the pillar and the side sill are joined together. It is characterized in that it is formed in a concave groove capable of accommodating the lower part of the retractor. Further, the connecting portion structure between the pillar and the side sill of the present invention according to claim 4 is the above-mentioned claim 1
In addition to the configuration described in any one of 3 to 3, the pillar is a center pillar of a vehicle body.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. First, the structure of the connecting portion between the pillar and the side sill as the first embodiment of the present invention will be described.
1 is a schematic perspective view showing the structure, and FIG. 2 is a schematic cross-sectional view showing the structure, which is a BB cross-sectional view in FIG.

As shown in FIGS. 1 and 2, in the connecting portion structure of the pillar and the side sill as the first embodiment of the present invention, the side sill 2 is arranged in the vehicle length direction as in the conventional vehicle body structure. There is. In addition, the center pillar 1 is arranged in a substantially vertical direction.
Is provided, and the lower end of the center pillar 1 is joined to the side sill 2 by welding or the like. As shown in FIG. 1, the center pillar 1 is composed of a center pillar outer panel 1A and a center pillar inner panel 1B, and these panels 1A and 1B are joined to each other by spot welding or the like. As a result, the center pillar 1 is formed in a substantially closed cross section so that a space is formed therein.

A seat belt retractor 3 is arranged inside the center pillar 1. The seat belt retractor 3 is for winding up and storing an extra portion of the seat belt 4.
And a bracket 3 for supporting the reel 3A and mounting the reel 3A in the center pillar 1
B.

The seat belt retractor 3 is mounted at a position as low as possible so that the seat belt 4 can surely restrain and protect the occupant even when a large impact force is applied to the vehicle due to an accident or the like. ing. this is,
This is because the closer to the side sill 2, the higher the rigidity is, and the higher the safety can be. Therefore, as shown in FIG. 2, the bracket 3B is disposed near the side sill 2, and the center pillar inner panel 1 is fixed by the bolts 5 and the like.
B and side sill 2 are fastened.

Further, a step portion 6 as shown in FIG. 1 is formed at the connecting portion of the center pillar 1 of the side sill 2.
The step portion 6 is formed in order to prevent the seat belt retractor 3 from interfering with the side sill 2, so that the seat belt retractor 3 can be provided below. By the way, such a step 6
If only the side sill 2 is provided, the ridge lines 2a and 2b of the side sill 2 are partially discontinuous, and the side sill 2
The rigidity of will decrease. Therefore, when a bending moment is input to the side sill 2, the stepped portion 6 is locally deformed, and as a result, the cross section of the side sill 2 is likely to be deformed.

Therefore, in the present invention, as shown in FIG.
A concave groove (hereinafter referred to as a bead) 7 is formed in the step portion 6 along the vehicle length direction, and by providing the bead 7, the rigidity of the side sill 2 in the vehicle length direction is ensured. Of. That is, with respect to the cross-sectional shape of the side sill 2 (see FIG. 6) only having the normal stepped portion 6,
In this structure, by forming the bead 7 on the step portion 6, the side sill 2 can have a cross-sectional shape as shown in FIG. 2, and the bending rigidity in the vehicle length direction can be improved.

Since the structure of the connecting portion between the pillar and the side sill as the first embodiment of the present invention is configured as described above, the ridgelines 2a and 2b of the side sill 2 are formed by the beads 7 provided on the stepped portion 6. The rigidity of the discontinuous portion (that is, the vicinity of the step 6) is improved. Therefore, for example, even when a bending moment is input to the side sill 2 from the vehicle length direction, the bead 7 opposes the bending moment to improve the bending rigidity of the side sill 2 and further improve the rigidity of the entire vehicle body. Of. Of course, since the step portion 6 is provided, the seat belt retractor 3 can be attached at a low position near the step portion 6 as in the conventional case. As a result, the mounting rigidity of the seat belt retractor 3 can be sufficiently ensured, and thus sufficient safety can also be ensured.

Further, such a bead 7 can be formed at the same time as the step portion 6 when the panel of the side sill 2 is press-formed, so that the processing is extremely easy, and a lean hose or rib like the conventional structure is used. Since there is no need to newly provide such a reinforcing member, there is an advantage that neither an increase in weight nor an increase in cost is brought about. Next, a second embodiment of the present invention will be described. FIG. 3 is a schematic perspective view showing the configuration, FIG. 4 is a schematic cross-sectional view showing the configuration, and a CC cross-sectional view in FIG. Is.

In the second embodiment, a reinforcing rib 8 as shown in FIGS. 3 and 4 is provided at the connecting portion between the side sill 2 and the center pillar 1 and corresponding to the step portion 6 in the first embodiment. It is provided. As shown in FIG. 3, the reinforcing ribs 8 are provided along the vehicle length direction of the side sill 2 and improve the rigidity against the bending moment input to the side sill 2 from the vehicle length direction. is there.

The sectional shape of the reinforcing rib 8 is shown in FIG.
Is formed in a substantially semicircular concave groove 8a as shown in
The reel 3 of the seat belt retractor 3 is placed in the groove 8a.
A is to be stored. And the reinforcing rib 8
With such a structure, the function as the step portion 6 for avoiding the interference of the seat belt retractor 3 and the function as the reinforcing member are provided.

As a result, the seat belt retractor 3 can be provided further downward while preventing a local decrease in rigidity due to the discontinuity of the ridge of the side sill 2. The bracket 3B of the seat belt retractor 3 is formed such that the lower portion, that is, the portion close to the side sill 2 is shorter than that of the first embodiment, so as to prevent interference with the side sill 2. It has become.

Since it is constructed as described above as the second embodiment of the present invention, the reinforcing rib formed in the concave groove 8a having a substantially semicircular cross section instead of the step portion 6 in the first embodiment. By providing 8, the rigidity of the side sill 2 can be increased and the interference with the seat belt retractor 3 can be avoided. That is, for example, even when a bending moment is input to the side sill 2 from the vehicle length direction, the reinforcing rib 8 opposes the bending moment, so that the bending rigidity of the side sill 2 can be sufficiently ensured. This also has the advantage of improving the rigidity of the entire vehicle body.

Further, as described above, the reinforcing rib 8 is formed in the substantially semicircular concave groove 8a, and the lower portion of the reel 3A is housed in the concave groove 8a. The seat belt retractor 3 can be arranged at a lower position. As a result, the mounting rigidity of the seat belt retractor 3 can be sufficiently ensured, and sufficient safety can be ensured.

Also, similarly to the first embodiment, the forming process of the reinforcing rib 8 is extremely easy, and since it is not necessary to additionally provide a reinforcing member such as a lean hose or a rib, the weight and cost are increased. It has the advantage of not being invited.

[0026]

As described above in detail, according to the connecting structure of the pillar and the side sill of the present invention as defined in claim 1, the pillars are arranged substantially vertically and the seat belt is wound under the inside thereof. A pillar having a seatbelt retractor and a side sill arranged in the vehicle length direction so as to be coupled to a lower end of the pillar, and an interference with the seatbelt retractor is provided on an upper surface of a pillar coupling portion of the side sill. A stepped portion is formed to avoid it, and the stepped portion is provided with a concave groove that secures the rigidity of the side sill in the vehicle length direction along the vehicle length direction.
There is an advantage that interference between the side sill and the seat belt retractor can be avoided. Further, there is an advantage that the rigidity of the entire vehicle body is improved by improving the bending rigidity of the side sill. Further, since the seat belt retractor can be attached at a low position near the step portion, there is an advantage that the attachment rigidity of the seat belt retractor can be sufficiently ensured, and thereby sufficient safety can be ensured. . Furthermore, since it is not necessary to additionally provide a reinforcing member such as a lean hose or a rib, there is an advantage that neither an increase in weight nor an increase in cost is brought about.

According to the structure for connecting the pillar and the side sill of the present invention as defined in claim 2, a seat belt retractor for winding up the seat belt is provided in a substantially vertical direction and is provided below the inside thereof. A pillar and a side sill arranged in the vehicle length direction so as to be coupled to the lower end of the pillar are provided, and a step portion for avoiding interference with the seat belt retractor is formed on the upper surface of the pillar coupling portion of the side sill. Since the entire step portion is configured as a reinforcing rib that strengthens the rigidity of the entire side sill, the reinforcing rib can increase the rigidity of the side sill while avoiding interference with the seat belt retractor as a step portion. There is. Further, there is an advantage that the rigidity of the entire vehicle body is improved by improving the bending rigidity of the side sill. Further, since the seat belt retractor can be mounted at a low position near the step, it is possible to secure sufficient mounting rigidity of the seat belt retractor, which also has an advantage that sufficient safety can be secured. . Furthermore, since it is not necessary to additionally provide a reinforcing member such as a lean hose or a rib, there is an advantage that an increase in weight and an increase in cost are not caused.

Further, according to the connecting portion structure of the pillar and the side sill of the present invention according to claim 3, in addition to the structure according to claim 2, the reinforcing rib extends in the vehicle length direction, With the configuration in which the groove is formed so as to accommodate the lower portion of the seat belt retractor, the seat belt retractor can be arranged at a low position. Therefore, as described above, there is an advantage that the mounting rigidity of the seat belt retractor can be sufficiently ensured and sufficient safety can be ensured.

According to the structure for connecting the pillar and the side sill of the present invention according to claim 4, in addition to the structure according to any one of claims 1 to 3, the pillar is a center pillar of a vehicle body. With this structure, the rigidity of the substantially central portion of the side sill can be increased. The improvement of the rigidity of the substantially central portion of the side sill has a high contribution to the improvement of the rigidity of the entire vehicle body, and therefore has an advantage that the rigidity of the entire vehicle body can be significantly improved.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an overall configuration of a joint structure of a pillar and a side sill as a first embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view showing a configuration of a pillar-side sill coupling portion structure as the first embodiment of the present invention, which is a cross-sectional view taken along line BB in FIG.

FIG. 3 is a schematic perspective view showing an overall configuration of a pillar-side sill coupling portion structure as a second embodiment of the present invention.

FIG. 4 is a schematic cross-sectional view showing a configuration of a pillar-side sill coupling portion structure as a second embodiment of the present invention, which is a cross-sectional view taken along line CC of FIG. 3;

FIG. 5 is a schematic perspective view showing a connection portion between a conventional pillar and a side sill.

6 is a schematic cross-sectional view showing a connection portion between a conventional pillar and a side sill, and is a cross-sectional view taken along the line AA in FIG.

[Explanation of symbols]

 1 Center Pillar 1A Center Pillar Outer Panel 1B Center Pillar Inner Panel 2 Side Sills 2a, 2b Side Sill Ridge Line 3 Seat Belt Retractor 3A Reel 3B Bracket 4 Seat Belt 5 Bolts 6 Steps 7 Concave Groove as Bead 8 Reinforcing Rib 8a Recess Groove

Claims (4)

[Claims] 1. A pillar having a seat belt retractor for winding a seat belt in a substantially vertical direction, and a side sill arranged in a vehicle length direction so as to be coupled to a lower end of the pillar. In order to avoid interference with the seat belt retractor, a step portion is formed on the upper surface of the pillar coupling portion of the side sill, and the side sill secures the rigidity in the vehicle length direction along the vehicle length direction. Characterized in that a concave groove is provided,
Joint structure between pillar and side sill. 2. A pillar provided with a seatbelt retractor for winding up a seatbelt in a substantially vertical direction, and a side sill arranged in a vehicle length direction so as to be coupled to a lower end of the pillar. In addition, a step portion is formed on the upper surface of the pillar coupling portion of the side sill to avoid interference with the seat belt retractor, and the entire step portion is configured as a reinforcing rib that strengthens the rigidity of the entire side sill. The structure of the joint between the pillar and the side sill, which is characterized in that 3. The pillar and the side sill according to claim 2, wherein the reinforcing rib extends in the vehicle length direction and is formed in a concave groove that can accommodate a lower portion of the seat belt retractor. Joint structure with. 4. The joint structure between a pillar and a side sill according to claim 1, wherein the pillar is a center pillar of a vehicle body.