JP2016052834A - Coupling part structure of pillar and side sill of automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce cost and a vehicle body mass through reduction in the number of components by improving a reinforcement member.SOLUTION: A reinforcement member 4 is configured in a substantially hat sectional form by a long body part 4a whose axially right-angled cross section is formed in an approximately U shape, and a pair of flange parts 4b formed at tip parts of a pair of side face walls 4a-1 constituting the body part 4a so as to extend in a vehicle body vertical direction along a longitudinal direction. Both flange parts 4b comprise bent flange parts 4b-1 which are formed integrally by bending the tip parts along the side face walls 4a-1 of the body part 4a. The bent flange parts 4b-1 are attached to an inner wall of a sill outer 2a, and a top face wall 4a-2 of the body part 4a is attached to an inner wall of a sill inner 2b.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a structure for connecting a pillar and a side sill of an automobile in which a pillar extending in a vertical direction of a vehicle body and a side sill extending in a longitudinal direction of the vehicle body are connected and connected.

  In this type of conventional technology, for example, as shown in FIGS. 11 and 12, a pillar configured by forming a pillar outer a-1 and a pillar inner a-2 in a closed cross section c, for example, a center pillar a, A side sill b formed by forming the sill outer b-1 and the sill inner b-2 in the closed cross section d is overlapped and bonded to each other to form a connecting portion e.

  By the way, the connecting part structure of the pillar and the side sill of such an automobile must have a predetermined rigidity to improve the running stability or riding comfort of the automobile, and has encountered a collision accident such as a side collision of the automobile. It is required to have a predetermined strength in order to reduce the obstacles to the passengers against the impact.

  From this point of view, in the conventional technique shown in FIGS. 11 and 12, as a basic configuration, the side sill b is configured as a simple cavity having a closed cross section d, particularly around the coupling portion e with the pillar a. Therefore, it cannot be said that the structure is satisfactory in terms of rigidity and strength.

  Therefore, in the conventional technique, as shown in FIGS. 13 to 15, a predetermined rigidity and strength are secured by connecting and arranging the reinforcing member f in the closed cross section d.

  The reinforcing member f in the prior art shown in FIG. 13 is divided into an inner wall including the upper corner portion constituted by the sill outer b-1 and an inner wall including upper and lower corner portions constituted by the sill inner b-2. It is configured by tensioning and fixing. Further, the reinforcing member f in the prior art shown in FIG. 14 is united by being stretched and fixed to the inner wall including the upper and lower corner portions of the sill outer b-1 and the inner wall including the upper and lower corner portions of the sill inner b-2. It is configured as a construct.

  However, in any of the conventional techniques shown in FIGS. 13 and 14, the reinforcing member f is surely stretched and fixed to the corner inner walls, that is, the ridge line portions of the sill outer b-1 and the sill inner b-2. Although the rigidity and strength of the outer peripheral shape of the side sill b are enhanced, the inside of the closed section c is still in a hollow state.

  Therefore, for an impact that extends around the Z axis about the vertical direction of the vehicle body in the automobile and about the Y axis about the horizontal direction of the vehicle body and tangled with the X axis direction about the longitudinal direction of the vehicle body, It cannot be said that the closed cross section d of the side sill b in any prior art shown in FIGS. 13 and 14 can sufficiently suppress the buckling deformation that the sill outer b-1 and the sill inner b-2 open and break.

  Therefore, as a technique for improving the conventional technique, as shown in FIG. 15, baffles g are respectively joined and arranged on the inner wall of the reinforcing member f so as to separate the vehicle body longitudinal direction of the closed section d. Things are known.

  In the prior art shown in FIG. 15, the reinforcing member f extends around the Z axis about the vertical direction of the vehicle body and the Y axis about the horizontal direction of the vehicle body in cooperation with the baffle g. Therefore, it is possible to buffer a complex impact in which the X-axis direction about the longitudinal direction of the vehicle body is intertwined, and to ensure a predetermined rigidity and strength in the automobile (as related technology, (See Patent Document 1 to Patent Document 3).

JP 2010-18802 A Japanese Unexamined Patent Publication No. 2012-30689 JP 2012-201785 A

  However, in the conventional technique shown in FIG. 15, since the reinforcing member and the baffle g having different parts are used to secure the predetermined rigidity and strength in the automobile, the number of parts increases. This leads to an increase in cost and body mass.

  Therefore, in view of such a conventional technical problem, the present invention improves the reinforcing member, thereby reducing the number of parts and reducing the cost and the mass of the vehicle body. The purpose is to provide a partial structure.

  The connecting part structure of the automobile pillar and side sill according to the present invention includes a pillar formed by forming a closed cross section with a pillar inner and a pillar outer, and a side sill formed by forming a closed cross section with the sill inner and sill outer. In a coupling structure of a pillar and a side sill of an automobile, in which a coupling part is formed by overlapping each other and a reinforcing member is connected and arranged in a closed cross section formed by the side sill to reinforce the coupling part. The reinforcing member is formed in a substantially U-shaped cross section at right angles to the longitudinal axis of the vehicle body in the longitudinal direction of the vehicle body and the longitudinal ends of the pair of side walls constituting the body portion along the longitudinal direction of the vehicle body. And a pair of flange portions formed so as to extend in the direction, and is formed into a substantially hat cross-sectional shape. It is thereby attached to one inner wall of the sill inner, characterized by being configured by attaching the top wall of the main body portion to the other inner wall of the sill outer or sill inner.

  With such a configuration, the present invention is such that the reinforcing member is formed in a substantially U-shaped cross section perpendicular to the axis and is elongated in the longitudinal direction of the vehicle body and in the longitudinal direction at each front end portion of the pair of side walls constituting the main body portion. The number of parts is small, and the cost and weight of the vehicle body are reduced because of a single configuration with a substantially hat cross-sectional shape with a pair of flange portions formed so as to extend in the vertical direction of the vehicle body along Can be reduced.

  In addition, with this configuration, the present invention provides a reinforcing member having two ridges in the main body portion and attaching the pair of flange portions to the inner wall of either the sill outer or the sill inner, and the main body portion. Since the top wall is attached to either the inner wall of the sill outer or sill inner, the function of the conventional baffle g can be combined to ensure the predetermined rigidity and strength of the vehicle body at the same time. it can. As a result, the present invention is a complex in which the X-axis direction around the Z-axis about the vertical direction of the vehicle body and the Y-axis about the left-right direction of the vehicle body and the X-axis direction about the front-back direction of the vehicle body are intertwined. Can be efficiently buffered against a strong impact.

  Further, according to the present invention, as an embodiment, the reinforcing member is constituted by a pair of divided reinforcing members that are divided into two in the longitudinal direction of the vehicle body. It is configured to be connected and arranged in the front-rear direction so as to be separated from each other.

  With this configuration, the present invention can reduce the amount of material used because the reinforcing member is divided into two parts.

  In addition, as an embodiment of the present invention, both flange portions of the reinforcing member each have a bent flange portion integrally formed by bending the front end portion along the side wall of the main body portion. The bent flange portion is configured to be attached to one inner wall of the sill outer or sill inner.

  With this configuration, the present invention is configured such that the reinforcing member has a bent flange portion formed by bending the leading ends of both flanges along the side wall of the main body portion, and the bent flange portion is a sill outer or sill. Since it is attached to one inner wall of the inner, a bent ridge line by the bent flange portion is added to the reinforcing member, and the rigidity and strength of the vehicle body can be further improved.

  According to the present invention, the reinforcing member protrudes in the vertical direction of the vehicle body along the longitudinal direction at each of the front end portions of the pair of side walls constituting the long main body portion and the main body portion in which the cross section perpendicular to the axis is substantially U-shaped. Therefore, the number of components is small, and the cost and mass of the vehicle body can be reduced.

  Further, according to the present invention, the reinforcing member has two ridge lines in the main body portion, and the pair of flange portions are attached to the inner wall of either the sill outer or the sill inner, Since the face wall is attached to the other inner wall of the sill outer or sill inner, it has the function of the conventional baffle g and can simultaneously ensure a predetermined rigidity and strength in the vehicle body. As a result, the present invention is a complex in which the X-axis direction around the Z-axis about the vertical direction of the vehicle body and the Y-axis about the left-right direction of the vehicle body and the X-axis direction about the front-back direction of the vehicle body are intertwined. Effective shock can be buffered efficiently.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view depicting a structure of a connecting portion between a pillar and a side sill of an automobile according to a first embodiment of the present invention. It is the perspective view which drawn the reinforcement member in FIG. It is AA sectional drawing in FIG. FIG. 4 is a sectional view similar to FIG. 3 depicting a second embodiment of the present invention. It is sectional drawing similar to FIG. 3 which drew the 3rd Example of this invention. It is sectional drawing similar to FIG. 3 which drew the 4th Example of this invention. It is the perspective view which drawn the coupling | bond part structure of the pillar and side sill of the motor vehicle based on 5th Example of this invention. It is the perspective view which drawn the reinforcement member in FIG. It is BB sectional drawing in FIG. It is the perspective view which drawn the coupling | bond part structure of the pillar and side sill of the motor vehicle based on 6th Example of this invention. It is the perspective view which drawn the basic composition of the connection part structure of the pillar and side sill of the motor vehicle based on the prior art. It is CC sectional drawing in FIG. It is sectional drawing similar to FIG. 12 which drew an example of the prior art. It is sectional drawing similar to FIG. 12 which drew other examples of the prior art. It is sectional drawing similar to FIG. 12 which drawn other example of the prior art.

  The structure of the connecting part between the pillar and the side sill of the automobile according to the embodiment of the present invention is configured to reduce the number of parts and reduce the cost and the mass of the vehicle body by improving the shape of the reinforcing member.

  Next, the structure of the coupling portion between the automobile pillar and the side sill according to the first embodiment of the present invention will be described with reference to FIGS.

  First, in FIG. 1, a pillar that extends in the vertical direction of a vehicle body (not shown), for example, a center pillar 1, has a pillar outer 1a and a pillar inner 1b, each having a cross section perpendicular to the axis, formed into a closed section 1A. The side sill 2 which is configured by being formed and extends in the vertical direction of the vehicle body has a sill outer 2a and a sill inner 2b, each having a cross section perpendicular to the axis substantially in a hat shape, in a closed cross section 2A. It is configured by doing.

  The center pillar 1 bulges so as to exhibit a substantially T-shape with the closed cross section 1A opened at the lower end of the vehicle body, and is placed on the center portion of the side sill 2 in the longitudinal direction of the vehicle body. The coupling portion 3 is configured by mating and coupling.

  In order to reinforce the coupling portion 3, a reinforcing member 4 is connected and disposed so as to extend in the front-rear direction of the vehicle body within the closed cross section 2 </ b> A formed by the side sill 2.

  As shown in FIG. 2, the reinforcing member 4 has a long main body portion 4 a having a substantially U-shaped cross section at the axis and a distal end portion of a pair of side walls 4 a-1 constituting the main body portion 4 a. A pair of flange portions 4b formed so as to extend in the vertical direction of the vehicle body along the longitudinal direction, respectively, has a substantially hat cross-sectional shape.

  Further, the reinforcing member 4 includes a bent flange portion 4b-1 integrally formed by bending the distal end portions of the pair of flange portions 4b along the side wall 4a-1 of the main body portion 4a. ing.

  As shown in FIG. 3, the reinforcing member 4 configured as described above has a flange portion 4b attached to the inner wall of the sill outer 2a via the bent flange portion 4b-1 by arc welding or the like, and a main body portion. 4a is connected and arranged in a closed cross section 2A formed by the side sill 2 by attaching the top wall 4a-2 to the inner wall of the sill inner 2b by a rivet or a bolt nut 5.

  Therefore, according to the first embodiment, the reinforcing member 4 has a long main body portion 4a in which the cross section perpendicular to the axis is substantially U-shaped, and each of the pair of side walls 4a-1 constituting the main body portion 4a. Since it has a single configuration substantially in the shape of a hat cross section by a pair of flange portions 4b formed so as to protrude in the longitudinal direction of the vehicle body along the longitudinal direction at the front end portion, the number of parts The cost and the mass of the vehicle body can be reduced.

  Moreover, according to the said 1st Example, the reinforcing member 4 has a double ridgeline part in the main-body part 4a, and a pair of flange parts 4b are sill outer via the bending flange part 4b-1. 2a, and the top wall 4a-2 of the main body 4a is attached to the inner wall of the sill inner 2b, so that it has the function of the conventional baffle g, and has a predetermined Stiffness and strength can be secured at the same time. As a result, in the first embodiment, the X-axis direction extends around the Z axis about the vertical direction of the vehicle body in the automobile and around the Y axis about the horizontal direction of the vehicle body and extends about the front-back direction of the vehicle body. It is possible to efficiently buffer a complicated impact intertwined with each other.

  Furthermore, according to the first embodiment, the reinforcing member 4 is configured to have the bent flange portion 4b-1 formed by bending the leading ends of the two flanges 4b, and the bent flange portion 4b-1 is a sill. Since it is attached to the inner wall of the outer 2a, a bending ridge line by the bending flange portion 4b-1 is added to the reinforcing member 4, and the rigidity and strength of the vehicle body can be further improved.

  Next, another embodiment according to the present invention will be described with reference to FIGS.

  First, the reinforcing member 4 according to the second embodiment of the present invention shown in FIG. 4 is a long body portion 4a having a substantially perpendicular U-shaped cross section in the same manner as the first embodiment. And a pair of flange portions 4b formed so as to extend in the vertical direction of the vehicle body along the longitudinal direction at the respective front end portions of the pair of side walls 4a-1 constituting the main body portion 4a. It is configured.

  Further, the reinforcing member 4 according to the second embodiment also bends the tip end portions of the pair of flange portions 4b along the side wall 4a-1 of the main body portion 4a, similarly to the first embodiment. And has a bent flange portion 4b-1 formed integrally.

  However, in the reinforcing member 4 according to the second embodiment, the flange portion 4b is attached to the inner wall of the sill inner 2b via the bent flange portion 4b-1, and the main body portion 4a is attached to the inner wall of the sill inner 2b. Different from the first embodiment in that the top wall 4a-2 is attached to the inner wall of the sill outer 2a with a rivet or a bolt nut 5 so as to be connected in a closed cross section 2A formed by the side sill 2. It has a configuration.

  Therefore, according to the second embodiment, as in the first embodiment, the reinforcing member 4 is configured to have a long main body portion 4a and a main body portion 4a in which a cross section perpendicular to the axis is formed in a substantially U shape. A pair of flange portions 4b formed so as to extend in the vertical direction of the vehicle body along the longitudinal direction at the respective front end portions of the pair of side walls 4a-1 Since the configuration is the same as in the first embodiment, the number of parts is small, and the cost and the mass of the vehicle body can be reduced.

  Further, according to the second embodiment, the reinforcing member 4 also has two ridges in the main body portion 4a, and the pair of flange portions 4b are interposed via the bent flange portions 4b-1. Since it is attached to the inner wall of the sill inner 2b and the top wall 4a-2 of the main body 4a is attached to the inner wall of the sill outer 2a, it has the function of a conventional baffle g, Predetermined rigidity and strength can be secured at the same time. As a result, also in the second embodiment, the X axis about the Z axis about the vertical direction of the vehicle body in the automobile or the Y axis about the horizontal direction of the vehicle body, or the X axis about the longitudinal direction of the vehicle body. It is possible to efficiently buffer complex impacts that are intertwined in directions.

  Further, also in the second embodiment, the reinforcing member 4 has a bent flange portion 4b-1 formed by bending the tip portions of both flanges 4b, and the bent flange portion 4b-1 is a sill inner. Since it is attached to the inner wall of 2b, a bent ridge line by the bent flange portion 4b-1 is added to the reinforcing member 4, and the rigidity and strength of the vehicle body can be further improved.

  Next, according to the third embodiment of the present invention shown in FIG. 5, similar to the first embodiment, the reinforcing member 4 is a long member having a substantially perpendicular U-shaped cross section. The main body 4a and the pair of side walls 4a-1 constituting the main body 4a are substantially formed by a pair of flange portions 4b formed to extend in the vertical direction of the vehicle body along the longitudinal direction at the respective front ends thereof. It is configured in a hat cross-section type.

  Further, the reinforcing member 4 according to the third embodiment also bends the tip end portions of the pair of flange portions 4b along the side wall 4a-1 of the main body portion 4a as in the first embodiment. And has a bent flange portion 4b-1 formed integrally.

  The reinforcing member 4 configured as described above is similar to the first embodiment in that the flange portion 4b is attached to the inner wall of the sill outer 2a via the bent flange portion 4b-1 by arc welding or the like. However, the main body part 4a is connected to the closed wall 2A formed by the side sill 2 by attaching the top wall 4a-2 to the inner wall of the sill inner 2b by welding 6 such as plug welding. It is different.

  Therefore, according to the third embodiment, similar to the first embodiment, the reinforcing member 4 constitutes the long main body portion 4a and the main body portion 4a in which the cross section perpendicular to the axis is substantially U-shaped. A single configuration formed in a substantially hat cross-sectional shape by a pair of flange portions 4b formed so as to extend in the vertical direction of the vehicle body along the longitudinal direction at the respective front end portions of the pair of side walls 4a-1. Therefore, the number of parts is small, and the cost and the mass of the vehicle body can be reduced.

  Further, according to the third embodiment, as in the first embodiment, the reinforcing member 4 has two ridges in the main body portion 4a, and the pair of flange portions 4b are bent flanges. Since it is attached to the inner wall of the sill outer 2a via the part 4b-1 and the top wall 4a-2 of the main body part 4a is attached to the inner wall of the sill inner 2b, the conventional baffle g Combined with the functions, predetermined rigidity and strength of the vehicle body can be secured at the same time. As a result, in the third embodiment, the X axis about the Z axis about the vertical direction of the vehicle body in the automobile, the Y axis about the horizontal direction of the vehicle body, and the X axis about the longitudinal direction of the vehicle body. It is possible to efficiently buffer complex impacts that are intertwined in directions.

  Further, according to the third embodiment, similar to the first embodiment, the reinforcing member 4 is configured to have the bent flange portion 4b-1 formed by bending the tip portions of both flanges 4b, Since the bent flange portion 4b-1 is attached to the inner wall of the sill outer 2a, a bending ridge line by the bent flange portion 4b-1 is added to the reinforcing member 4, thereby improving the rigidity and strength of the vehicle body. Further improvement can be achieved.

  Next, the reinforcing member 4 according to the fourth embodiment of the present invention shown in FIG. 6 has a long main body portion in which the cross section perpendicular to the axis is substantially U-shaped as in the third embodiment. 4a and a pair of flange portions 4b formed so as to extend in the vertical direction of the vehicle body along the longitudinal direction at the respective distal end portions of the pair of side walls 4a-1 constituting the main body portion 4a. It is structured into a mold.

  In addition, the reinforcing member according to the fourth embodiment is also a bent flange portion 4b integrally formed by bending the distal end portions of the pair of flange portions 4b along the side wall 4a-1 of the main body portion 4a. −1.

  However, in the reinforcing member 4 according to the fourth embodiment, the flange portion 4b is attached to the inner wall of the sill inner 2b via the bent flange portion 4b-1, but the main body portion 4a is not attached. The top wall 4a-2 is connected to the closed wall 2A formed by the side sill 2 by being attached to the inner wall of the sill outer 2a by welding 6 such as plum welding, the third embodiment. And has a different configuration.

  Therefore, according to the fourth embodiment, the reinforcing member 4 has a long main body portion 4a whose cross section perpendicular to the axis is substantially U-shaped, and a pair of side walls 4a-1 constituting the main body portion 4a. From the pair of flange portions 4b formed so as to protrude and extend in the vehicle body vertical direction along the longitudinal direction at each of the tip portions of the Similar to the first embodiment, the number of components is small, and the cost and the mass of the vehicle body can be reduced.

  Further, according to the fourth embodiment, similarly, the reinforcing member 4 has two ridge lines in the main body 4a, and the pair of flanges 4b are interposed via the bent flanges 4b-1. Since it is attached to the inner wall of the sill inner 2b and the top wall 4a-2 of the main body 4a is attached to the inner wall of the sill outer 2a, the vehicle body has the function of the conventional baffle g. The predetermined rigidity and strength can be secured at the same time. As a result, also in the fourth embodiment, the X axis around the Z axis about the vertical direction of the vehicle body in the automobile and the Y axis about the horizontal direction of the vehicle body as the axis, and the X axis about the longitudinal direction of the vehicle body It is possible to efficiently buffer complex impacts that are intertwined in directions.

  Further, also in the fourth embodiment, the reinforcing member 4 has a bent flange portion 4b-1 formed by bending the tip portions of both flanges 4b, and the bent flange portion 4b-1 is a sill inner. Since it is attached to the inner wall of 2b, a bent ridge line by the bent flange portion 4b-1 is added to the reinforcing member 4, and the rigidity and strength of the vehicle body can be further improved.

  Next, a fifth embodiment of the present invention shown in FIGS. 7 to 9 will be described.

  According to the fifth embodiment, as shown in FIG. 7, the center pillar 1 configured by forming the closed cross section 1A by the pillar outer 1a and the pillar inner 1b is formed as in the first embodiment. The coupling portion 3 is configured by overlapping and coupling to the side sill 2 formed by forming the closed section 2A with the sill outer 2a and the sill inner 2b.

  In order to reinforce the coupling portion 3, the reinforcing member 4 is connected and disposed so as to extend in the front-rear direction of the vehicle body within the closed section 2 </ b> A formed by the side sill 2.

  As shown in FIG. 8, the reinforcing member 4 has a long main body portion 4a having a substantially U-shaped cross section perpendicular to the axis and each tip portion of a pair of side walls 4a-1 constituting the main body portion 4a. And a pair of flange portions 4b formed so as to extend in the vertical direction of the vehicle body along the longitudinal direction.

  Further, the reinforcing member 4 may be attached to the top wall 4a-2 of the main body 4a by a rivet or a bolt nut, but as shown in FIG. 9, in the fifth embodiment, plug welding or the like is used. The top wall 4a-2 is attached to the sill inner 2b by welding 6.

  However, in the fifth embodiment, the reinforcing member 4 does not have the bent flange portion 4b-1 formed by bending at the distal ends of the pair of flange portions 4b as in the above-described embodiments. The flange portion 4b is directly attached to the inner wall of the sill outer 2a by arc welding or the like.

  Accordingly, also in the fifth embodiment, the reinforcing member 4 has a long main body portion 4a in which the cross section perpendicular to the axis is formed in a substantially U-shape, and each tip of the pair of side walls 4a-1 constituting the main body portion 4a. Since it has a single configuration with a substantially hat cross-sectional shape by a pair of flange portions 4b formed so as to protrude and extend in the vertical direction of the vehicle body along the longitudinal direction, the number of parts is The cost and the mass of the vehicle body can be reduced.

  Further, according to the fifth embodiment, the reinforcing member 4 has two ridges in the main body portion 4a, and directly attaches the pair of flange portions 4b to the inner wall of the sill outer 2a. Since the top wall 4a-2 in the portion 4a is attached to the inner wall of the sill inner 2b, it has the function of the conventional baffle g, and can ensure a predetermined rigidity and strength in the vehicle body at the same time. As a result, in the fifth embodiment, the X axis about the Z axis about the vertical direction of the vehicle body in the automobile or the Y axis about the horizontal direction of the vehicle body, or the X axis about the longitudinal direction of the vehicle body. It is possible to efficiently buffer complex impacts that are intertwined in directions.

  Next, a sixth embodiment according to the present invention shown in FIG. 10 will be described.

  As shown in FIG. 10, in the sixth embodiment according to the present invention, as in the first embodiment, the center pillar 1 includes a pillar outer 1a having a cross section perpendicular to the axis and a substantially hat shape. The side sill 2 extending in the vertical direction of the vehicle body is formed by forming the pillar inner 1b in the closed cross section 1A, and the sill outer 2a and the sill 2 each having a cross section perpendicular to the axis substantially in a hat shape. The inner 2b is formed in a closed cross section 2A.

  The center pillar 1 bulges so as to exhibit a substantially T-shape with the closed cross section 1A opened at the lower end of the vehicle body, and is placed on the center portion of the side sill 2 in the longitudinal direction of the vehicle body. The coupling portion 3 is configured by mating and coupling.

  In order to reinforce the coupling portion 3, a reinforcing member 4 is connected and disposed so as to extend in the front-rear direction of the vehicle body within the closed cross section 2 </ b> A formed by the side sill 2.

  The reinforcing member 4 includes a long body portion 4a having a substantially U-shaped cross section perpendicular to the axis, and a longitudinal body at each distal end portion of the pair of side walls 4a-1 constituting the body portion 4a. The pair of flange portions 4b formed so as to extend in the up-down direction are substantially hat-shaped.

  Further, the reinforcing member 4 includes a bent flange portion 4b-1 integrally formed by bending the distal end portions of the pair of flange portions 4b along the side wall 4a-1 of the main body portion 4a. ing.

  However, the reinforcing member 4 is constituted by a pair of divided reinforcing members 4-1 and 4-2 that are divided in the longitudinal direction of the vehicle body, and both the divided reinforcing members 4-1 and 4-2 are closed on the side sill 2. The cross section is different from the first embodiment in that it is connected to the front and rear parts of the vehicle body in the connecting part 3 and is arranged in a separated state in the longitudinal direction of the vehicle body.

  With this configuration, in the sixth embodiment, since the reinforcing member 4 is divided into two parts by the divided reinforcing members 4-1 and 4-2, the material used can be reduced. It is different from examples.

  In addition, the reinforcing member 4 is thus divided into two parts by the divided reinforcing members 4-1 and 4-2, but the number of parts is small compared to the conventional technique, and the cost and the mass of the vehicle body are reduced. It can be said that mitigation can be achieved.

  Further, according to the sixth embodiment, each of the divided reinforcing members 4-1 and 4-2 in the reinforcing member 4 has two ridge lines in the main body portion 4a, and the pair of flange portions 4b. Since it is attached to the inner wall of the sill outer 2a via the bent flange part 4b-1, and the top wall 4a-2 of the main body part 4a is attached to the inner wall of the sill inner 2b, The baffle g can be combined to ensure a predetermined rigidity and strength of the vehicle body. As a result, in the sixth embodiment, the X axis around the Z axis about the vertical direction of the vehicle body in the automobile and the Y axis about the horizontal direction of the vehicle body as the axis, and the X axis about the longitudinal direction of the vehicle body as the axis. It is possible to efficiently buffer complex impacts that are intertwined in directions.

  Further, according to the sixth embodiment, each of the divided reinforcing members 4-1 and 4-2 of the reinforcing member 4 has the bent flange portion 4b-1 formed by bending the leading ends of both flanges 4b. Since the bent flange portion 4b-1 is attached to the inner wall of the sill outer 2a, a bending ridge line by the bent flange portion 4b-1 is added to the reinforcing member 4, and the rigidity of the vehicle body Further, the strength can be further improved.

  Since the present invention described above is configured to improve the shape of the reinforcing member to reduce the number of parts and reduce the cost and the mass of the vehicle body, the pillar extending in the vertical direction of the vehicle body It can be said that it is suitable for a structure of a connecting portion between a pillar and a side sill of an automobile that is connected and connected to a side sill extending in the front-rear direction of the vehicle body.

1 Center pillar (pillar)
DESCRIPTION OF SYMBOLS 1a Pillar outer 1b Pillar inner 1A Closed cross section 2 Side sill 2a Sill outer 2b Sill inner 3 Coupling part 4 Reinforcement member 4a Main part 4a-1 Side wall 4a-2 Top wall 4-1, 4-2 Split reinforcement member

Claims (3)

  A pillar formed by forming a closed cross-section with a pillar inner and a pillar outer and a side sill formed by forming a closed cross-section with a sill inner and sill outer are joined together to form a coupling portion. In a joint structure of a pillar and a side sill of an automobile configured by connecting and arranging a reinforcing member in a closed cross section formed by the side sill to reinforce the part, the reinforcing member is formed in a substantially U-shaped cross section at right angles to the axis. A pair of flange portions formed so as to extend in the vertical direction of the vehicle body along the longitudinal direction at the respective front end portions of the pair of side walls constituting the main body portion. And the flange portion is attached to one inner wall of the sill outer or sill inner, and the book Coupling part structure of the vehicle pillar and the side sill, characterized in that the top wall is constituted by attaching to the other inner wall of the sill outer or sill inner in section.   The reinforcing member is constituted by a pair of split reinforcing members divided in two in the longitudinal direction of the vehicle body, and both the split reinforcing members are connected and arranged in a separated state in the longitudinal direction of the vehicle body in the closed section of the side sill. The structure for connecting a pillar and a side sill of an automobile according to claim 1.   Both flange portions of the reinforcing member each have a bent flange portion integrally formed by bending the front end portion along the side wall of the main body portion, and the bent flange portion 3. The structure for connecting a pillar and a side sill of an automobile according to claim 1 or 2, wherein the sill outer or sill inner is attached to one inner wall.

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