JP2010184630A - Rear body structure of trunk-through portion - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rear body structure of a trunk-through portion that suppresses mass increase, maintains body rigidity and body strength, suppresses so called matchbox deformation, and avoids causing the rise of manufacturing cost, while not blocking the opening of the trunk-through portion. <P>SOLUTION: The upper back 7 forms a reinforcing end 71, bending the front side end of a plate-like body downward. The lower end of a brace 9 is fixedly installed to the rear wheel house 2 side of the cross bar 3 for fixing rear seat, forming a brace-like configuration, thereby providing a large opening at the center portion of the cross bar 3 for fixing rear seat. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a trunk through structure that prevents deformation around a rear floor when the rear floor is formed.

  In the sedan type passenger car, there is a trunk-through type body structure that integrates the trunk room and the interior of the vehicle as a boarding space.

In this trunk-through type passenger car, there is no wall separating the trunk room and the room when viewed from the rear of the vehicle, and therefore the structure of the entire vehicle including this portion must be reinforced.
In particular, since the strength against the load in the torsional direction that occurs when climbing over a step or the like is reduced, it is necessary to ensure rigidity in consideration of this, for example, as shown in FIG. .
This conventional example 1 is a general one that is currently used for models that are actually marketed.

In the trunk through structure 100 shown in the conventional example 1, the upper back 101 is installed above the rear wheel house inner RW so as to be bridged between the left and right rear wheel house inner RW. The upper back 101 is fixed to the rear wheel house inner RW by a front side strainer 102 on the front side of the automobile (hereinafter simply referred to as the front side), and the rear side (hereinafter simply referred to as the rear side) of the automobile. It was fixed to the rear wheel house inner RW by the strainer 103.
A rear seat fixing crossbar 104 is fixed between the left and right rear wheel house inner RWs across the inner RWs. The rear seat fixing crossbar 104 is a cylindrical reinforcing pipe for fixing the rear seat. Together with the rear wheel house inner RW, the upper back 101, the front side strainer 102, and the rear side strainer 103, the rigidity of the vehicle is increased. I keep it.

Further, the front side of the upper back 101 is formed with a reinforcing portion 105 processed into a prismatic shape as shown as a notch X in FIG. 4 to increase mechanical rigidity and high strength.
Thus, by reinforcing the upper back 101 not only in the left-right direction but also in the up-down direction and the front-rear direction, the rigidity against the generated load in the torsional direction is increased and the vehicle rigidity is maintained.

As another conventional example, there is Conventional Example 2 as an open patent document. This conventional example 2 is an “automobile reinforcing member mounting structure” (Japanese Patent Laid-Open No. 5-338558).
As shown in FIG. 5, the conventional example 2 is characterized in that the end of the lower brace 213 constituting the sub performance rod 215 is attached and fixed to the upper part of the left spring support 205 and the rear floor 202, respectively. The end of 214 is attached and fixed to the right spring support 206 and the rear floor 202, respectively. Accordingly, in the conventional example 2, the left rear wheel house 203 integrally formed with the spring support 205 (also the right and right rear wheel house 204 integrally formed with the spring support 206) is individually separated by the lower brace 213 and the lower brace 214. The deformation was prevented. Further, the upper brace 208 is bridged and fixed between the rear wheel houses 203 and 204, so that the lower braces 213 and 214 and the upper brace 208 form a triangular shape to further maintain rigidity and strength.

  By configuring in this way, the rigidity of the rear wheel houses 203 and 204 by the performance rod 215 can be further improved, and the rear wheel houses 203 and 204 are always fixed regardless of the direction of the load applied to the rear wheel houses 203 and 204. An attachment structure for an automotive reinforcing member capable of preventing deformation and increasing the stability of maneuverability has been provided.

JP-A-5-338558

  However, in the conventional example 1, the opening of the trunk through portion can be secured, and the body rigidity and the body strength can be secured. However, the reinforcing portion 105 must be provided, and the strainer is also connected to the front strainer 102 and the rear strainer. Since the side strainer 103 is indispensable, there is a problem that the vehicle weight increases. Furthermore, the reinforcing portion 105 must be formed integrally with the plate-like upper back 101, which not only increases the number of manufacturing steps but also requires design integration, which further increases manufacturing costs. The problem was.

  Further, in the conventional example 2, since the rear brace house 203 and 204 is used as a starting point and the upper brace 208 and the lower braces 213 and 214 form a triangular shape to maintain the rigidity, the body rigidity and the body strength can be maintained. Since no components other than the braces are required, it is possible to contribute to a reduction in vehicle weight. However, since each brace is required in addition to the normal components, there is a problem that the manufacturing cost increases. Furthermore, since the lower laces 213 and 214 are fixed at substantially the center of the rear floor 202 to form a triangular shape by each brace, the lower laces 213 and 214 protrude greatly from the trunk through portion, and the trunk through portion is narrowed. I had a problem to say.

  In view of the above-mentioned problems, the present invention can suppress so-called matchbox deformation without inhibiting the opening of the trunk through portion, suppressing an increase in mass, maintaining body rigidity and body strength, and manufacturing. Provide a trunk body rear body structure that does not increase costs.

  Therefore, according to the present invention, a rear seat is attached and fixed by connecting the rear wheel houses formed on the left and right sides of the rear floor as a structure capable of greatly opening the trunk through portion and securing necessary body rigidity and the like and reducing the weight. A rear seat fixing crossbar is provided, and the upper back is fixed between the bracket package trays located above the left and right rear wheel houses, the upper end is fixed on the front side of the bracket package tray, and the lower end is the rear wheel house. The bracket package tray and upper back are placed between the left and right rear wheel houses by the rear suspension tower with the upper end fixed to the side of the vehicle and the lower end fixed to the rear wheel house. Install the bracket with the bracket A brace that is fixed to the rear tray and the lower end is fixed to the rear seat fixing cross bar is arranged, the upper back is bent downward at the front end of the plate-like body to form a reinforcing end, and the lower end of the brace is the rear seat fixing cross. Provided is a trunk through-rear rear body structure characterized in that it can be greatly opened at the center of a rear seat fixing crossbar by being fixed to the rear wheel house side of the bar and formed in a brace.

In this rear body structure, a rear seat fixing crossbar fixed between the left and right rear tire houses, a strainer and a rear suspension tower erected from the rear wheel house, a bracket package tray fixed to these, and a rear seat fixing crossbar. The braces fixed in a brace between the bracket package tray and the bracket package tray form a substantially triangular shape, which increases the mechanical strength of the trunk through portion. Accordingly, the mechanical strength of the upper back is not increased as much as in the past, and the front side is configured to be reinforced by bending it into, for example, an L shape. The strainer is placed only on the front side of the rear wheel house, making it lighter.
In addition, components such as an upper back reinforcement are provided on the rear side of the upper back in the same manner as in the past.

In this invention, the reinforcing part which is formed in a prismatic shape on the conventional upper back and has increased rigidity is eliminated, and the end corresponding to the reinforcing part is only formed as a reinforcing end which is bent in an L shape. Since the brace is added to ensure rigidity, the triangular part formed by the brace, the strainer / rear suspension tower and bracket package tray, and the rear seat fixing crossbar provides the same or higher rigidity as before. The weight can be reduced by eliminating the reinforcing portion, and the weight can be reduced as compared with the conventional example 1, and the rigidity can be secured.
And since the connection part of a brace and a rear seat fixed crossbar can be fixed by the rear wheel house side, it has the effect that the opening of a trunk through part can be taken wider than the prior art example 2.
Accordingly, the vehicle weight can be reduced by about 1.8 [kg] as compared with the conventional example 1, but the production cost of the press die or the like at the time of manufacturing the part can be reduced by simplifying the structure and shape by the brace or the like. It has the effect of being able to plan.

A perspective cross-sectional explanatory view of the rear portion of the vehicle representing an embodiment of the present invention Explanatory drawing which looked at the front from the back of the Example of this invention Cutting end face explanatory drawing explaining parts Perspective cross-sectional explanatory diagram showing Conventional Example 1 Perspective cross-sectional explanatory diagram showing Conventional Example 2

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional explanatory view of a rear portion of a vehicle representing an embodiment of the present invention, FIG. 2 is an explanatory view of the front of the embodiment of the present invention as viewed from the rear, and FIG. It is.

  Reference numeral 1 denotes a rear body structure of a trunk through portion according to the present invention. Hereinafter, it is simply referred to as rear body structure 1. The rear body structure 1 is a structure of a space portion between a rear seat and a rear trunk room at the rear of the vehicle interior and between the rear wheel houses 2.

  The rear wheel house 2 is provided on each of the left and right sides, and is the same as a conventional vehicle. In addition, a rear seat fixing crossbar 3 that connects and reinforces the front side of the rear wheel house 2 is fixed between the left and right rear wheel houses 2. The rear seat fixing crossbar 3 fixes a rear seat (not shown) and rotates the rear seat (not shown) around the rear seat fixing crossbar 3 to enable trunk through.

  A bracket 31 for fastening with an automobile body (not shown) is fixed to the rear seat fixing crossbar 3 at both ends and near the center. The bracket 31 is secured to the automobile body (not shown) by bolting or the like. Fixed. In addition, a seat lever 32 that rotates a rear seat (not shown) is provided at the center of the rear seat fixing crossbar 3. The rear seat fixing crossbar 3 is the same as the conventional one.

A strainer 4 is erected from the front side of the upper part of the left and right rear wheel houses 2. A bracket package tray 5 is fixed to the upper end of the strainer 4.
The strainer 4 is the same as the conventional strainer 4 and is a bracket-like member formed by pressing a plate-like body, and the upper bracket package tray 5 and the rear wheel house 2 are connected and fixed. In the conventional example, the strainer 4 is also erected on the rear side of the rear wheel house 2 and connected and fixed to the rear side of the bracket package tray 5. However, in this embodiment, there is no rear strainer. However, since sufficient strength can be obtained, it is not provided in order to reduce the weight.

  A rear suspension tower 6 is provided at the upper center of the rear wheel house 2. The rear suspension tower 6 is provided in each of the left and right rear wheel houses 2, and also connects and fixes the bracket package tray 5 and the rear wheel house 2. The rear suspension tower 6 is no different from the conventional one.

Therefore, the bracket package tray 5 fixed to the strainer 4 and the bracket package tray 5 is positioned at the upper part of each of the left and right rear wheel houses 2.
The upper back 7 is bridged and fixed to the bracket package trays 5 provided on the left and right.

The upper back 7 is bridged and fixed between the left and right bracket package trays 5, and the front end is bent between the bracket package trays 5 in an L shape to form a reinforcing end 71.
That is, in the conventional upper back, a prismatic pipe shape is formed instead of the reinforcing end 71 to reinforce the automobile body, and in the present invention, the thin plate forming the upper back main body 72 is formed. The strength of the upper back 7 is sufficient with the reinforcement that is simply bent. The rest of the upper back 7 is not particularly different from the conventional one.

  An upper bracket reinforcement 8 is fixed behind the upper back 7. The upper bracket reinforcement 8 is also provided and fixed between the left and right bracket package trays 5. The upper bracket reinforcement 8 has the same structure as that conventionally provided.

9 is a brace. The brace 9 is a bar-shaped body that has been pressed so as to have a cross-sectional shape as shown in FIG. 3, and the lower end is fixed by a bolt and nut at a position closer to the rear wheel house 2 side than the center of the rear seat fixing crossbar 3. Is done. Accordingly, the fixing bracket 33 is provided at the fixing position of the rear seat fixing crossbar 3, and is formed so as to be fixed by a bolt and nut. The upper end of the brace 9 is fixed by the bracket package tray 5 and a bolt and nut. The braces 9 are provided between the left and right bracket package trays 5 and the rear seat fixing crossbar 3.
In this way, the brace 9 is provided between the bracket package trays 5 and the rear seat fixing crossbar 3 so as to form a brace, so that one side formed by the rear wheel house 2, the strainer 4, the rear suspension tower 6, and the bracket package tray 5 is formed. Further, the rigidity can be ensured by forming a triangular shape by one side formed by the brace 9 and one side formed by the rear seat fixing crossbar 3.

  The present invention can be used for the structure of a trunk through portion of an automobile.

1 Rear body structure of trunk through part 2 Rear wheel house 3 Rear seat fixing crossbar 31 Bracket 32 Seat lever 33 Fixing bracket 33
4 Strainer 5 Bracket package tray 6 Rear suspension tower 7 Upper back 71 Reinforcement end 8 Upper bracket reinforcement 9 Brace

Claims (1)

It is equipped with a rear seat fixing crossbar that attaches and fixes the rear seats by connecting the rear wheelhouses formed on the left and right of the rear floor, and the bracket package tray is positioned above each of the left and right rear wheelhouses. A strainer whose upper end is fixed to the front side of the bracket package tray and whose lower end is fixed to the rear wheel house, and a rear suspension tower whose upper end is fixed to the vehicle side of the bracket package tray and whose lower end is fixed to the rear wheel house The upper back is placed between the left and right bracket package trays, and the upper end is fixed to the bracket package tray and the lower end is fixed to the rear seat between the bracket package tray and the rear seat fixing crossbar. cross It arranged a brace that fixed to the over,
The upper back bends the front end of the plate-like body downward to form a reinforcing end, and the lower end of the brace is fixed to the rear wheel house side of the rear seat fixing crossbar and formed in a brace form to fix the rear seat The rear body structure of the trunk-through part is characterized in that the center part of the crossbar can be opened largely.

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