JP6501058B2 - Body structure - Google Patents

Description

  The present invention relates to a vehicle body structure in a vehicle such as a self-propelled vehicle, and more particularly to a coupling structure between a lower portion of a center pillar and a side sill.

  In a vehicle such as a car, generally, a center pillar is provided between a front seat and a rear seat. The center pillar is a member that forms the framework of the vehicle body, and the joint between the lower portion of the center pillar and the side sill is required to have high rigidity. Therefore, center pillar reinforcement for reinforcing the center pillar, side sill reinforcement (rock reinforcement reinforcement) for reinforcing the side sill (rocker), etc. are provided inside the outer panel, and these are connected, There is one in which the rigidity of the joint between the center pillar and the side sill is enhanced (see, for example, Patent Document 1).

  Furthermore, in order to increase the rigidity of the center pillar, there is also one in which a reinforcement bead (reinforcing bead portion) is provided on the center pillar reinforcement (reinforcement) (see, for example, Patent Document 2).

Patent No. 5400899 JP 2012-116396 A

  Although the rigidity of the center pillar can be enhanced by providing the reinforcement beads in the center pillar reinforcement as described above, further improvement in the rigidity is desired.

  The center pillar reinforcement and the side sill reinforcement are connected by spot welding, and each spot welding spot is arranged according to the shape (outer shape) of the center pillar reinforcement regardless of the shape of the reinforcing bead. Was common.

  For example, when an impact is applied near the joint between the lower portion of the center pillar reinforcement and the side sill reinforcement due to a side collision or the like, the force is transmitted to the reinforcing bead of the center pillar reinforcement via each spot welding spot. . At that time, if each spot of spot welding is arranged according to the shape (outer shape) of the center pillar reinforcement as described above, the force transmitted to the reinforcing bead through each spot becomes uneven. There is a possibility that the center pillar reinforcement may be easily deformed.

  The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a vehicle body structure capable of enhancing the rigidity of a center pillar reinforcement which is joined to a side sill reinforcement by spot welding.

A first aspect of the present invention for solving the above problems is a vehicle body structure in which a lower portion of a center pillar constituting a vehicle body is joined to a side sill, and the center pillar comprises a pair of width walls extending in the vehicle width direction; The center pillar reinforcement includes a front and rear wall extending in the front and rear direction to connect the pair of width walls, and a convex reinforcing bead formed on the front and rear wall, The spots are joined by spot welding at a plurality of locations to the side sill reinforcement forming the side sill, and each spot welding spot formed around the reinforcement bead is uniform from the ridge line of the reinforcement bead The vehicle body structure is characterized in that the lower end portion of the reinforcing bead is formed in a semicircular shape so as to be disposed to have a certain distance.

According to a second aspect of the present invention, in the vehicle body structure according to the first aspect, a plurality of the reinforcing beads are arranged in parallel in the vehicle longitudinal direction, and the reinforcing beads are continuous between the reinforcing beads to the lower end of the reinforcing bead. In the vehicle body structure, a bead is formed.

According to a third aspect of the present invention, in the vehicle body structure of the first or second aspect, the upper end side of the reinforcing bead extends toward the corner between the front and rear walls and the width wall of the center pillar reinforcement. It is in the vehicle body structure characterized by being provided.

  According to the vehicle body structure of the present invention, for example, at the time of a side collision or the like, the impact applied to the joint portion between the center pillar reinforcement and the side sill force is substantially equally transmitted from each spot of spot welding to the entire reinforcing bead Be done. Thereby, the deformation of the center pillar reinforcement can be suppressed, and the rigidity of the center pillar can be improved.

It is a disassembled block diagram explaining the vehicle body structure which concerns on one Embodiment of this invention. It is a perspective view of the principal part explaining the vehicle body structure concerning one embodiment of the present invention. It is a top view explaining the vehicle body structure concerning one embodiment of the present invention.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a view showing the side panel and the reinforcement in a disassembled state, FIG. 2 is a perspective view showing a coupling structure of the lower part of the center pillar reinforcement and the side sill reinforcement, and FIG. It is a top view which shows the connection part of lower reinforcement and side sill phosphorus.

  The vehicle body structure according to the present invention is characterized, for example, by the structure of a connecting portion in which a lower portion of a center pillar reinforcement forming a center pillar of a vehicle such as an automobile is joined to a side sill reinforcement by spot welding.

  As shown in FIG. 1, the surface of the vehicle body side portion is formed by a side panel (outer panel) 1. The side panel 1 is, for example, integrally formed with an outer panel constituting the front pillar portion 2, the center pillar portion 3, the side sill portion 4 and the like. Inside the side panel 1, reinforcement which is a reinforcing member is provided. For example, a front pillar reinforcement 5 for enhancing the rigidity of the front pillar portion 2 is provided inside the front pillar portion 2. Similarly, a center pillar reinforcement 6 for enhancing the rigidity of the center pillar portion 3 is provided inside the center pillar portion 3, and a side sillin for enhancing the rigidity of the side sill portion 4 inside the side sill portion 4. Force 7 is provided.

  An upper portion of the center pillar reinforcement 6 is coupled to, for example, a front pillar reinforcement 5 forming the front pillar portion 2, and a lower portion thereof is coupled to a side sill reinforcement 7.

  Hereinafter, the connection structure between the lower portion of the center pillar reinforcement 6 and the side sill reinforcement 7 will be described in detail.

  As shown in FIGS. 2 and 3, the center pillar reinforcement 6 is coupled to the side sill reinforcement 7 by spot welding at a plurality of places. The center pillar reinforcement 6 has a substantially U-shaped cross section, and connects the pair of width walls 6a, 6b extending in the vehicle width direction with the pair of width walls 6a, 6b extending in the front-rear direction of the vehicle It has the front and back wall 6c. A center pillar inner 8 is provided inside the center pillar reinforcement 6, and the center pillar reinforcement 6 is coupled to the side sill reinforcement 7 together with the center pillar inner 8.

  Further, at the lower part of the center pillar reinforcement 6, a convex reinforcing bead 10 is provided which protrudes to the outside of the vehicle (opposite to the center pillar inner 8). The reinforcing bead 10 is provided to increase the rigidity of the center pillar reinforcement 6. In the present embodiment, two reinforcing beads 10A and 10B are juxtaposed in the front-rear direction of the vehicle on the front and rear walls 6c of the center pillar reinforcement 6.

  The reinforcing bead 10 (10A, 10B) extends upward from near the lower end portion of the center pillar reinforcement 6, and the upper end side of the reinforcing bead 10 is a width wall 6a of the center pillar reinforcement 6, It extends toward the corner formed by 6b and the front and back wall 6c. In the present embodiment, the reinforcing bead 10A provided on the vehicle front side is extended toward the corner 6d formed by the width wall 6a and the front and rear walls 6c on the vehicle front side, and is provided on the vehicle rear side The bead 10B is extended toward a corner 6e formed by the width wall 6b on the rear side of the vehicle and the front and rear walls 6c. In other words, the upper end side of the reinforcing bead 10A is connected to the corner 6d, and the upper end side of the reinforcing bead 10B is connected to the corner 6e.

  On the other hand, the lower end side of the reinforcing bead 10 is formed without reaching the lower end of the center pillar reinforcement 6. The lower end portion of each reinforcing bead 10 is formed in a substantially semicircular shape in plan view.

  In the present embodiment, a convex bead 11 is provided also between the two reinforcing beads 10A and 10B. However, the beads 11 are not provided to enhance the rigidity of the center pillar reinforcement 6 but are provided, for example, for draining water. For this reason, unlike the bead 10 for reinforcement, the bead 11 is continuously provided to the lower end of the center pillar reinforcement 6.

  And in this embodiment, the spot welding spot (where the center pillar reinforcement 6 and the side sill reinforcement 7 are joined to each other in the region including the periphery of the lower end portion of each reinforcing bead 10 formed in a semicircular shape as described above Welds) 21 to 32 are arranged. Furthermore, around the lower end portion of each reinforcing bead 10 formed in a semicircular shape, each spot 21 to 28 of spot welding formed on the center pillar reinforcement 6 is substantially uniform from the ridge line of the reinforcing bead 10 It is arranged so that it becomes a certain distance. Specifically, the hitting points 21 to 24 arranged around the reinforcing bead 10A are formed so as to have a substantially uniform distance L1 from the ridge line of the reinforcing bead 10A, and are placed around the reinforcing bead 10B 25 to 28 are formed so as to have a substantially uniform distance L2 from the ridge line of the reinforcing bead 10B.

  In addition, the ridgeline of the bead 10 for reinforcements is a line along the periphery of the top face of the bead 10 for reinforcements which is convex shape in other words. Further, the distance L1 from the ridgeline of the reinforcing bead 10A to each of the hitting points 21 to 24 and the distance L2 from the reinforcing bead 10B to each of the hitting points 25 to 28 may be the same or different.

  In addition, the hitting points 21 to 24 provided corresponding to the reinforcing bead 10A are arranged at substantially equal intervals. Similarly, the respective hitting points 25 to 28 provided corresponding to the reinforcing beads 10B are also arranged at substantially equal intervals.

  According to the coupling structure according to the present embodiment, for example, at the time of a side collision or the like, the impact applied to the coupling portion between the center pillar reinforcement 6 and the side sill reinforcement 7 is a reinforcing bead from each spot of spot welding. 10 are transmitted substantially equally throughout. That is, it can be suppressed that a large force is locally transmitted to the reinforcing bead 10. Thereby, the deformation of the center pillar reinforcement 6 can be suppressed, and the rigidity of the center pillar can be improved.

  In particular, in the present embodiment, the hitting points 21 to 24 provided corresponding to the lower end of the reinforcing bead 10A are arranged at substantially equal intervals, and the hitting points 25 to 25 provided corresponding to the lower end of the reinforcing bead 10B. Since 28 is also disposed at substantially equal intervals, the force is uniformly transmitted from the respective points 21 to 24 to the entire reinforcing bead 10A, and the force is uniformly transmitted from the respective points 25 to 28 to the entire reinforcing bead 10B. . Therefore, the deformation of the center pillar reinforcement 6 can be suppressed.

  Further, as described above, in the present embodiment, the upper end side of the reinforcing bead 10A is connected to the corner portion 6d, and the upper end side of the reinforcing bead 10B is connected to the corner portion 6e. Thereby, at the time of a side collision or the like, the impact applied to the joint portion between the center pillar reinforcement 6 and the side sill reinforcement 7 has a relatively high strength via the reinforcing bead 10 as shown by the arrow in FIG. It is transmitted to each corner 6d, 6e. Therefore, the deformation of the center pillar reinforcement 6 can be suppressed more reliably.

  As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the above-mentioned embodiment. The present invention can be modified as appropriate without departing from the scope of the invention.

  For example, the shape of the reinforcing bead formed in the center pillar reinforcement is not particularly limited. In the above-mentioned embodiment, although the lower end part of the bead for reinforcement was formed in a substantially semicircle shape, of course, it may be other shapes. Whatever shape the reinforcing bead has, the spot welding spot formed around the reinforcing bead may be disposed so as to have a substantially uniform distance from the ridge line of the reinforcing bead.

  Further, for example, in the above-described embodiment, the spot welding spots formed around the reinforcing bead are arranged at substantially equal intervals, but the intervals may not necessarily be uniform. Further, the upper end side of the reinforcing bead may not necessarily be connected to the corner formed by the width wall and the front and rear wall.

Reference Signs List 1 side panel 2 front pillar portion 3 center pillar portion 4 side sill portion 5 front pillar reinforcement 6 center pillar reinforcement 6 a width wall 6 b width wall 6 c front and back wall 6 d, 6 e corner portion 7 side sill reinforcement 8 center pillar inner 10 reinforcement bead 11 Beads 21-32 Hit Points (Welded Part)

Claims (3)

A vehicle body structure in which a lower portion of a center pillar constituting a vehicle body is coupled to a side sill,
The center pillar includes a pair of width walls extending in the vehicle width direction, a front and rear wall extending in the longitudinal direction of the vehicle and connecting the pair of width walls, and a convex reinforcing bead formed on the front and rear walls Have a center pillar reinforcement,
The center pillar reinforcement is joined by spot welding at a plurality of locations to the side sill nucleus forming the side sill,
Each spot welding spot formed around the reinforcing bead is disposed at a uniform distance from the ridge line of the reinforcing bead ,
The lower end portion of the reinforcing bead is formed in a semicircular shape . In the vehicle body structure according to claim 1 ,
A plurality of reinforcing beads are arranged in parallel in the vehicle longitudinal direction,
A vehicle body structure characterized in that a bead which is continuous to the lower end of the reinforcing bead is formed between the reinforcing beads. In the vehicle body structure according to claim 1 or 2 ,
An upper end side of the reinforcing bead is extended toward a corner of the front and rear walls and the width wall of the center pillar reinforcement.

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