JP2014177200A - Car body rear structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect a seat back of a rear seat properly from a stored object in a cargo chamber in a simple structure in which increase of cost and weight is suppressed.SOLUTION: A brace 6 connecting a floor panel 2 and a shelf panel 4 of a cargo chamber 3 is formed into a hat-shaped cross section having a pair of side surfaces 12 along a longitudinal direction and a bottom surface 11 facing a car front and rear direction. Depth (height) d from end edges of the pair of side surfaces 12 to the bottom surface 11 becomes gradually deeper as it goes to an end part 6a of the longitudinal direction toward a central part 6b of the longitudinal direction. In addition, rigidity of the brace 6 in the vicinity of the central part 6b of the longitudinal direction is enhanced in the car front and rear direction.

Description

  The present invention relates to a rear structure of an automobile body.

  2. Description of the Related Art Conventionally, as a rear structure of a car body, a structure in which a floor surface and a panel member at the upper part of a cargo compartment are connected by two brace members in order to ensure the rigidity of the vehicle body in a portion extending from the rear floor surface to the cargo compartment. ing. One end of each of the two brace members is attached to the center of the floor surface, the other end is attached to the outside of the panel member in the vehicle width direction, and is arranged in a V shape on the luggage compartment side of the seat back of the rear seat. (For example, patent document 1).

  In the technique disclosed in Patent Document 1, the brace member can ensure the rigidity in the vicinity of the wheel house for the rear wheel. Since the two brace members are arranged in a V shape on the luggage compartment side of the seat back of the rear seat, even if the load (baggage) in the luggage compartment moves forward during sudden braking, the luggage By contacting the brace member, the seat back is protected and the impact on the occupant can be reduced.

  The brace member is composed of, for example, a long member having a hat-shaped cross section, and the rigidity when the load abuts is ensured. However, depending on the weight of the load and the forward moving speed, a large load may be applied. It will be added to the central part in the longitudinal direction. On the other hand, because of the structure of the brace member, the rigidity in the vicinity of the central portion in the longitudinal direction is weaker than that of the longitudinal end portion fixed to the vehicle body.

  For this reason, in order to protect the seat back of the rear seat accurately, it is preferable to improve the rigidity of the central portion in the longitudinal direction of the brace member. In order to ensure the rigidity of the central portion of the brace member in the longitudinal direction, it is conceivable to increase the thickness of the entire brace member or to reinforce the central portion with a reinforcing member, but an increase in cost and weight can be avoided. There wasn't.

JP 2009-107387 A

  The present invention has been made in view of the above circumstances, and provides a rear structure of a vehicle body that can accurately protect a seat back of a rear seat from the contents of a luggage compartment with a simple structure that suppresses an increase in cost and weight. The purpose is to do.

  In order to achieve the above object, the rear structure of the vehicle body of the present invention according to claim 1 includes a long reinforcing member for connecting the floor surface and the panel member at the upper part of the cargo compartment at the rear of the rear seat. The reinforcing member has an open cross-section having a bottom surface facing the vehicle front-rear direction and a pair of side surfaces bent from both side edges along the longitudinal direction of the bottom surface. The height from the edge to the bottom surface is formed so as to increase from both ends in the longitudinal direction of the reinforcing member toward the center in the longitudinal direction.

  In this invention which concerns on Claim 1, the height from the edge (opening edge) of the side surface which comprises the open section of a reinforcement member to a bottom face is made high from the both ends of a longitudinal direction toward the center part of a longitudinal direction. Therefore, the rigidity in the vehicle front-rear direction in the vicinity of the central portion in the longitudinal direction of the reinforcing member is enhanced. For this reason, even if the contents in the cargo compartment move to the compartment side, they can be reliably received by the reinforcing member, and the seat back of the rear seat can be protected accurately. In addition, since it is not necessary to increase the thickness of the material or add additional reinforcement or the like, it is possible to provide a simple structure that suppresses an increase in cost and weight.

  The rear structure of the vehicle body according to a second aspect of the present invention is the rear structure of the vehicle body according to the first aspect, wherein the reinforcing member has a width between the pair of side surfaces extending from both longitudinal ends in the longitudinal direction. It is formed so that it may become narrow toward the center part.

  In the present invention according to claim 2, the width between the pair of side surfaces (width of the opening) of the central portion in the longitudinal direction of the reinforcing member is formed so as to become narrower toward the central portion in the longitudinal direction. The rigidity of the central portion in the vehicle front-rear direction can be increased without increasing the amount of material that increases the height from the edge (opening edge) of the side surface of the central portion to the bottom surface. By molding an existing material in accordance with the width of the end portion in the longitudinal direction, a reinforcing member having a central portion with a high height from the side edge (opening edge) to the bottom surface can be produced.

  That is, the material for increasing the height of the central portion in the longitudinal direction is not required, and the width between the pair of side surfaces (opening width) of the open section of the central portion in the longitudinal direction is reduced, thereby reducing the edge of the side surface. A central portion having a high height from the (opening edge) to the bottom surface can be produced, and there is no need to increase the molding material, and the reinforcing member can achieve both improvement in yield and rigidity.

  The rear structure of the vehicle body of the present invention according to claim 3 is the rear structure of the vehicle body according to claim 2, wherein the reinforcing member has bottom surfaces at both ends in the longitudinal direction, the floor surface, and the panel. It is connected to a member.

  In this invention which concerns on Claim 3, a reinforcement member can be connected to a floor surface and a panel member using the bottom face of an open cross section.

  According to a fourth aspect of the present invention, the rear structure of the vehicle body of the present invention is the rear structure of the vehicle body according to any one of the first to third aspects, wherein two reinforcing members are provided, and the two reinforcing members are provided. One end in the longitudinal direction of the member is connected to the floor surface near the center in the vehicle width direction, and the other end in the longitudinal direction of one of the reinforcing members is connected to the panel member near one outside in the vehicle width direction. And the other end in the longitudinal direction of the other reinforcing member is connected to the panel member on the other outer side in the vehicle width direction.

  In the present invention according to claim 4, since the two reinforcing members are arranged in a V-shape across the floor surface and the panel member, the contents of the cargo compartment are increased in a state in which the rigidity around the cargo compartment is increased. When moving to the passenger compartment side, the seat back of the rear seat can be more accurately protected.

  The rear structure of the vehicle body according to the present invention can accurately protect the seat back of the rear seat against a member moving from the luggage compartment.

1 is an external view of a skeleton representing a rear structure of a vehicle body according to an embodiment of the present invention. It is the rear view which looked at the frame | skeleton showing the rear part structure of a vehicle body from the rear side. It is the side view which looked at the rear part structure of the vehicle body from the side. It is a perspective view of a reinforcing member. It is the VV arrow directional view in FIG. It is a VI-VI line arrow view in FIG.

  The rear structure of the vehicle body of this embodiment is a structure in which the floor surface at the lower part of the rear seat and the shelf panel at the upper part of the cargo compartment are connected by a reinforcing member (brace). The brace is configured to have an open cross-section having a bottom surface facing the vehicle front-rear direction (facing the front-rear direction) and a pair of side surfaces bent from both side edges along the longitudinal direction of the bottom surface. The height (depth) from the end edge (opening edge) to the bottom surface is formed so as to gradually increase (deep) from both ends in the longitudinal direction of the brace toward the center in the longitudinal direction.

  As a result, the height (depth) from the edge (opening edge) to the bottom surface of the side surface of the brace at the center portion in the longitudinal direction where the rigidity is relatively low with respect to both ends in the longitudinal direction fixed to the vehicle body side. Is increased (deep), and the rigidity in the longitudinal direction of the vehicle at the center portion in the longitudinal direction of the brace, which is a position corresponding to the load in the luggage compartment, is enhanced. For this reason, even if the luggage moves from the luggage compartment to the passenger compartment side, the luggage abuts against a brace in a portion where high rigidity is secured, and the seat back of the rear seat is accurately protected and seated on the seat back. The impact on the passenger can be reduced.

  The rear structure of the vehicle body will be specifically described with reference to the drawings.

  FIG. 1 shows an appearance of a skeleton representing a rear structure of a vehicle body according to an embodiment of the present invention viewed from an oblique front side of the vehicle, and FIG. 2 shows a skeleton representing the rear structure of the vehicle body viewed from the cargo compartment side of the vehicle. The situation is shown.

  FIG. 3 is a side view of the rear structure of the vehicle body for explaining the relationship with the state of the luggage compartment, viewed from the side, FIG. 4 shows the appearance of a single reinforcing member, and FIG. 5 shows the end of the reinforcing member. FIG. 6 illustrates a cross section of the reinforcing member, and FIG. 6 illustrates a VI-VI line arrow of FIG. 4 illustrating a cross section of the central portion of the reinforcing member.

  As shown in FIGS. 1 and 2, the vehicle body 1 is provided with a floor panel 2, and a shelf panel 4 is provided in the vehicle width direction above the portion of the rear luggage compartment 3. A reinforcement 5 is provided on the floor panel 2 on the front side of the vehicle body 1 of the shelf panel 4, and a portion of the reinforcement 5 is a boundary portion between the vehicle compartment and the cargo compartment 3. A rear seat, which will be described later, is disposed on the floor panel 2 on the front side of the reinforcement 5.

  A brace 6 is connected across the reinforcement 5 (floor panel 2) and the front side of the shelf panel 4 in the luggage compartment 3. The brace 6 is a long member having an open section (hat-shaped section), and the height direction (depth direction) from the edge (opening edge) of the side surface 12 to the bottom surface 11 of the hat-shaped section is the front-rear direction of the vehicle body 1. It is arranged to face. One end of the brace 6 is connected to the reinforcement 5 of the floor panel 2, and the other end of the brace 6 is connected to the side of the shelf panel 4 on the side of the vehicle body 1. Two braces 6 are provided and are arranged in a V shape across the floor panel 2 and the cargo compartment 3.

  As will be described in detail later, the brace 6 has a bottom surface 11 facing the front-rear direction of the vehicle (facing the front-rear direction) and a pair of side surfaces 12 bent from both side edges along the longitudinal direction of the bottom surface 11. Thus, the flange 15 is formed to have an open cross section and extend in parallel with the bottom surface 11 from the end edge (opening edge) of the side surface 12.

  The height (depth) d from the edge of the side surface 12 to the bottom surface 11 of the brace 6 gradually increases (deeper) from both end portions 6a in the longitudinal direction of the brace 6 toward the central portion 6b in the longitudinal direction. It is formed as follows. The width h between the pair of side surfaces 12 of the hat-shaped cross section (the width of the opening in the open cross section) h is gradually narrowed toward the longitudinal center 6b with respect to the longitudinal end 6a. .

  In the rear structure of the vehicle body described above, the floor panel 2 (reinforce 5) below the rear seat 7 and the shelf panel 4 above the luggage compartment 3 are connected by the brace 6. As shown in FIG. 3, the rigidity in the longitudinal direction of the center portion 6 b of the brace 6 corresponding to the position of the luggage 8 that is the storage of the luggage compartment 3 is enhanced in the vehicle longitudinal direction. Even if the bag 8 moves forward (moves to the left in the figure), the load 8 comes into contact with the central portion 6b in the longitudinal direction of the brace 6 and is prevented from entering the passenger compartment. As a result, the seat back 7a of the rear seat 7 is accurately protected, and the impact on the passenger seated on the rear seat 7 is reduced.

  The brace 6 will be specifically described with reference to FIGS.

  As shown in FIG. 4, the brace 6 is manufactured as a member having an open cross section (hat-shaped cross section) by molding a rectangular sheet metal. The upper longitudinal end 6a is joined to the shelf panel 4 at the bottom 11 of the hat-shaped cross section, and the lower longitudinal end 6a is joined to the reinforcement 5 at the bottom 11 of the hat-shaped cross section. .

  The brace 6 is attached to the vehicle body 1 by joining the bottom surface 11 of the end 6a in the longitudinal direction to the shelf panel 4 and the reinforcement 5, but the flange 15 continuous to the open section is connected to the shelf panel 4, And it is also possible to attach the brace 6 to the vehicle body 1 side by joining to the reinforcement 5.

  As shown in FIGS. 5 and 6, the depth d1 from the edge (opening edge) of the pair of side surfaces 12 to the bottom surface 11 of the open cross section of the central portion 6b in the longitudinal direction of the brace 6 is the open cross section of the end portion 6a. The depth d2 from the end edge (opening edge) of the pair of side surfaces 12 to the bottom surface 11 is deeper (d1> d2).

  Specifically, the edges (opening edges) of the pair of side surfaces 12 are curved so as to bulge to the front side of the vehicle most at the longitudinal center portion 6b of the brace 6, and the edges (opening edges) of the pair of side surfaces 12 are opened. The depth d from the edge) to the bottom surface 11 is formed so as to gradually increase from both end portions 6a in the longitudinal direction of the brace 6 toward the central portion 6b in the longitudinal direction until it reaches d1 from d2.

  The width (opening width) h1 between the pair of side surfaces 12 of the open section of the central portion 6b in the longitudinal direction of the brace 6 is the width (opening width) h2 between the pair of side surfaces 12 of the open section of the end portion 6a. On the other hand, it is narrower (h1 <h2).

  Specifically, the pair of side surfaces 12 are curved so that the width (opening width) h between the pair of side surfaces 12 is the narrowest at the center in the longitudinal direction of the brace 6, The width (opening width) h of the pair of side surfaces 12 is formed so as to gradually become narrower from both end portions 6a in the longitudinal direction of the brace 6 toward the central portion 6b in the longitudinal direction from h2 to h1.

  Therefore, the brace 6 can increase the rigidity in the longitudinal direction (depth direction of the side surface 12) of the vehicle in the vicinity of the central portion 6b in the longitudinal direction.

  Then, the depth d from the edge (opening edge) of the side surface 12 of the brace 6 to the bottom surface 11 is gradually increased from d2 to d1 toward the central portion 6b in the longitudinal direction. Since the width (opening width) h between the side surfaces 12 is gradually narrowed from h2 to h1 toward the longitudinal central portion 6b, the material for increasing the depth of the longitudinal central portion 6b. Without increasing the depth d1, the depth d1 at the central portion 6b in the longitudinal direction can be increased.

  Therefore, the brace 6 with increased rigidity in the vicinity of the central portion 6b in the longitudinal direction can be produced without increasing the material.

  The brace 6 formed so that the depth d1 of the central portion 6b in the longitudinal direction becomes the deepest and the width h1 of the opening in the open section of the central portion 6b in the longitudinal direction becomes the narrowest. It is produced by stretching a necessary portion of the material by molding using a rectangular material that matches the depth d2 of the end 6a in the direction and the width h2 of the opening.

  Therefore, the brace 6 is formed with a rectangular material in accordance with the depth d2 of the end 6a in the longitudinal direction and the width h2 of the opening, so that the depth to the bottom surface 11 is deepest at the center 6b in the longitudinal direction. Can be made in a state. Thereby, it becomes brace 6 which can make a yield and improvement in rigidity compatible.

  Incidentally, the depth d of the brace 6 and the width h of the opening are formed by gradually changing from the longitudinal end 6a to the center 6b of the brace 6, but the situation in which the dimensions gradually change, that is, By adjusting the curved state of the end edge (opening edge) of the side surface 12 toward the vehicle front side and the vehicle width direction inside (opening inside), the rigidity can be adjusted to a desired state.

  As described above, with the rear structure of the vehicle body of the present invention, the vehicle longitudinal direction in the vicinity of the central portion of the brace 6 in the longitudinal direction can be obtained without increasing the thickness of the material or adding a separate reinforcing member or the like. As a result, it is possible to efficiently secure the load in the cargo compartment 3 that is moved to the vehicle compartment side (vehicle front side) during sudden braking with a simple structure that suppresses increase in cost and weight. This prevents the seat back 7a of the rear seat 7 from being properly protected.

  The present invention can be used in the industrial field of the rear structure of an automobile body.

1 Vehicle 2 Floor Panel 3 Loading Room 4 Shelf Panel 5 Reinforce 6 Brace 7 Rear Seat 8 Luggage 11 Bottom 12 Side 15 Flange

Claims (4)

A rear structure of the vehicle body including a long reinforcing member that connects the floor surface and the panel member at the upper part of the cargo compartment at the rear of the rear seat,
The reinforcing member has an open cross section having a bottom surface facing the vehicle longitudinal direction and a pair of side surfaces bent from both side edges along the longitudinal direction of the bottom surface,
The rear structure of the vehicle body is formed such that a height from an edge of the side surface to the bottom surface increases from both longitudinal ends of the reinforcing member toward a central portion in the longitudinal direction. In the rear structure of the vehicle body according to claim 1,
The reinforcing member is
A rear structure of a vehicle body, wherein a width between the pair of side surfaces is formed so as to become narrower from both longitudinal end portions toward a longitudinal central portion. In the rear structure of the vehicle body according to claim 2,
The reinforcing member is
The rear structure of the vehicle body, wherein bottom surfaces at both ends in the longitudinal direction are connected to the floor surface and the panel member. In the rear structure of the vehicle body according to any one of claims 1 to 3,
Two reinforcing members are provided,
One end in the longitudinal direction of the two reinforcing members is connected to the floor near the center in the vehicle width direction,
The other end in the longitudinal direction of one of the reinforcing members is connected to the panel member closer to one outer side in the vehicle width direction, and the other end in the longitudinal direction of the other reinforcing member is closer to the other outer side in the vehicle width direction. The rear structure of the vehicle body is connected to the panel member.

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