JP2014201073A - Vehicle structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle structure in which a head collision load can be transmitted adequately to a vehicle rear side by means of a simple construction without using exclusive parts.SOLUTION: In a vehicle structure C in which a front part reinforcement 1 and a rear part reinforcement 2 are provided as a rocker reinforcement and a rail case 3 for a lower guide of a rear slide door is arranged at the upper region of the rear part reinforcement 2, at least a rear part of the front part reinforcement 1, the shape of which is hat-shaped in the cross section, has a fitting posture of an opening facing laterally and an almost horizontal plate part 10a, the rail case 3 is configured so that a pair of flanges 32 of an upper case panel 30a and a lower case panel 30b protrudes from the front part of the rail case 3 to the vehicle front side, and the plate part 10a of the front part reinforcement 1 is jointed with the pair of flanges 32 of the rail case 3.

Description

  The present invention relates to a vehicle structure of a type having a rear slide door.

An example of the vehicle structure is disclosed in Patent Document 1.
In the vehicle structure described in the document, a rail case for a lower guide of a rear slide door is disposed in a rocker (side sill) at the lower part of the vehicle, and rocker reinforcement is also disposed in the rocker. . The rocker reinforcement is divided into two front and rear reinforcements, and the front reinforcement is connected to a rail case to transmit a front collision load. As means for connecting the front reinforcement to the rail case, means for connecting the front reinforcement to the upper surface of the rail case using a separate connecting member is employed. The connecting member is also connected to the reinforce of the center pillar, and this load is not concentrated on the upper surface portion of the rail case when a front collision load is input.

  However, the prior art has the following problems.

That is, since a dedicated connecting member for connecting the front reinforcement and the upper surface portion of the rail case is used, the number of parts increases accordingly. Therefore, it is not preferable in terms of weight reduction and cost reduction.
In addition, since the conventional technique is to connect the connecting member also to the center pillar, it cannot be appropriately adopted for a vehicle having no center pillar.
If a structure that simply connects the front reinforcement and the upper surface of the rail case with a connecting member is used without connecting to the center pillar, the rigidity of the upper surface of the rail case is considerably increased. Need to increase. If the rigidity is insufficient, it will be greatly deformed when the front impact load is input, and appropriate load transmission will not be possible. In order to increase the rigidity of the upper surface portion of the rail case in order to prevent this, it is necessary to increase the thickness of this portion, resulting in an increase in weight and an increase in manufacturing cost.

JP 2010-23632 A

  The present invention has been conceived under the circumstances as described above, and appropriately transmits the front collision load to the rear side of the vehicle by means having a simple configuration without using dedicated parts. It is an object to provide a vehicle structure that can be used.

  In order to solve the above problems, the present invention takes the following technical means.

The vehicle structure provided by the present invention includes a front reinforcement as a rocker reinforcement and a rear reinforcement located on the vehicle rear side of the front reinforcement. A vehicle structure in which a rail case for a lower guide is disposed, and at least a rear portion of the front reinforcement is a substantially horizontal plate having a cross-sectional hat shape and a mounting posture of a lateral opening. The rail case has a configuration in which a pair of flanges provided on the upper case panel and the lower case panel constituting the rail case protrude from the front portion of the rail case toward the front of the vehicle. And the pair of flanges of the plate portion of the front reinforcement and the rail case It is characterized by being joined.

According to such a configuration, the following effects can be obtained.
First, the front reinforcement and the rail case are directly connected, and a dedicated component for connecting them is not necessary. Accordingly, it is possible to favorably reduce the weight and the manufacturing cost by reducing the number of parts.
Secondly, the rear part of the front reinforcement has a hat shape in cross section, and its rigidity can be increased. On the other hand, the location where the pair of flanges of the rail case is provided is a portion whose rigidity is remarkably higher than that of the upper surface portion of the rail case, for example. Therefore, when the front impact load is received, the above-described places are not greatly deformed, and the load transmission can be appropriately performed. For this reason, unlike patent document 1, it becomes suitable also for the vehicle which does not have a center pillar.
Thirdly, as the pair of flanges joined to the front reinforcement, those used for joining the upper case panel and the lower case panel can be used. For this reason, for example, it is not necessary to add a special improvement to the rail case. There is no need to increase the thickness of the rail case. Furthermore, the operation | work which joins the substantially horizontal board part of the rear part of a front reinforcement and a pair of flange of a rail case can be performed easily. For this reason, the manufacturing cost can be further reduced.

  In the present invention, preferably, a stopper piece for a lower roller of a rear slide door is attached to a portion of the upper case panel in the vicinity of the pair of flanges, and a lower portion of the stopper piece is joined to the rear reinforcement. Has been.

  According to such a configuration, an effect of making it difficult for the pair of flanges of the rail case to be deformed into a so-called opening state when a front collision load is input. Such an effect is reasonable because it is obtained by using a stopper piece for the lower roller.

  Other features and advantages of the present invention will become more apparent from the following description of embodiments of the present invention with reference to the accompanying drawings.

(A) is a principal part perspective view which shows an example of the vehicle structure which concerns on this invention. (B) is a principal part expansion perspective view of (a). (C) is Ic-Ic sectional drawing of (b). (D) is Id-Id sectional drawing of (a).

Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.
In the drawing, the arrow Fr indicates the front of the vehicle, the arrow Ou indicates the outside in the vehicle width direction, and the arrow Up indicates the upper side.

  A vehicle structure C shown in FIG. 1 is a vehicle structure that does not have a center pillar, and a front reinforcement is provided as a rocker reinforcement under a door opening 95 formed between a front pillar 90 and a rear pillar 91. 1 and a rear reinforcement 2 located on the rear side of the vehicle. A rail case 3 for a lower guide of a rear slide door (not shown) is disposed in the upper region of the rear reinforcement 2. As shown by the phantom line in FIG. 1 (d), the rocker 4 is configured by combining a rocker outer panel 40 and a rocker inner panel 41.

  As shown in FIG. 1B, the front reinforcement 1 is substantially hat-shaped in cross section, and its mounting posture is a lateral opening. For this reason, the front reinforcement 1 includes a pair of upper and lower plate portions 10a and 10b that are substantially horizontal, a standing plate portion 11 that connects these one side edges, and a pair of other side edges that are connected to the other side edges of the plate portions 10a and 10b. The upright plate portions 12a and 12b are provided.

  The rail case 3 is configured by combining an upper case panel 30a and a lower case panel 30b, and a lower guide rail 31 for a rear slide door is provided on the upper case panel 30a. The upper case panel 30a and the lower case panel 30b are joined by a flange, and as shown in FIG. 1C, a pair of flanges 32 projecting toward the front of the vehicle are provided at the front portion of the rail case 3. Is provided. The pair of flanges 32 and the plate portion 10a of the front reinforcement 1 are overlapped and joined to each other. The joining means is, for example, spot welding (the portion indicated by the symbol W in FIG. 1C is a welded portion). The front surface portion 33 of the rail case 3 and the rear end surface 14 of the front reinforcement 1 face each other.

  A gusset 6 that receives the lower roller of the sliding door is attached to the inside of the rail case 3 in the vehicle width direction. A stopper piece 7 for the lower roller is attached to the vicinity of the pair of flanges 32 in the upper case panel 30a. The lower part of the stopper piece 7 is joined to the rear reinforcement 2.

  Next, the operation of the vehicle structure C described above will be described.

  First, the rear part of the front reinforcement 1 has a hat shape as described above, and its rigidity is high. On the other hand, the pair of flanges 32 and their peripheral parts of the rail case 3 are also highly rigid parts. Therefore, when the front impact load is received, those portions are not greatly deformed, and the front impact load is appropriately transmitted from the front reinforcement 1 to the rail case 3, and the front impact on the vehicle rear side. It becomes possible to receive a load appropriately. Since the stopper piece 7 for the lower roller is mounted so as to straddle the rear reinforcement 2 from the vicinity of the pair of flanges 32 in the upper case panel 30a, the pair of flanges when receiving a front impact load. It is also suppressed that 32 deform | transforms so that it may open up and down.

  Even if the joint state between the pair of flanges 32 and the front reinforcement 1 is released due to some circumstances such as a considerably large front impact load, in this case, the rear end face 14 ( (Including the rear end surface of the upright plate portion 12a) directly contacts the front surface portion 33 of the rail case 3. Therefore, also in this case, the front collision load is appropriately transmitted to the rail case 3 side. In the present embodiment, the rear end surface 14 and the front surface portion 33 are set apart from each other. However, the present invention is not limited to this, and the rear end surface 14 and the front surface portion 33 are brought into face-to-face contact. The state may be set.

  The front reinforcement 1 and the rail case 3 are directly connected, and a dedicated component for connecting them is not necessary. The pair of flanges 32 of the rail case 3 are originally provided in the rail case 3. For this reason, in this embodiment, it is possible to appropriately reduce the weight and the manufacturing cost by reducing the number of parts. The operation | work which joins the board part 10a of the front reinforcement 1 and the pair of flange 32 of the rail case 3 can also be performed easily.

The present invention is not limited to the contents of the above-described embodiment. The specific configuration of each part of the vehicle structure according to the present invention can be modified in various ways within the intended scope of the present invention.
Of course, the present invention can also be applied to a vehicle having a center pillar.

C Vehicle structure 1 Front reinforcement (Rockaly reinforcement)
2 Rear reinforcement (Rockaly reinforcement)
3 Rail case 4 Rocker 7 Stopper piece 10a for lower roller Plate (front reinforcement)
30a Upper case panel 30b Lower case panel

Claims (2)

As the Rocka Reinforce, it has a front reinforce and a rear reinforce located on the vehicle rear side of this front reinforce,
A vehicle structure in which a rail case for a lower guide of a rear slide door is disposed in an upper region of the rear reinforcement,
At least the rear portion of the front reinforcement has a substantially horizontal plate portion, the shape of which is a cross-sectional hat shape, and the mounting posture of the lateral opening,
The rail case is configured such that a pair of flanges provided on the upper case panel and the lower case panel constituting the rail case protrude from the front portion of the rail case toward the front of the vehicle.
The vehicle structure according to claim 1, wherein the plate portion of the front reinforcement and the pair of flanges of the rail case are joined. The vehicle structure according to claim 1,
A vehicle structure in which a stopper piece for a lower roller of a rear slide door is attached to a portion near the pair of flanges in the upper case panel, and a lower portion of the stopper piece is joined to the rear reinforcement.

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