JP4497939B2 - Support structure of rail for sliding door support in automobile - Google Patents

Description

According to the present invention, a midway portion in the vertical direction of the outer panel of the vehicle body is bent to form a groove extending in the front-rear direction, a slide door support rail is disposed in the groove, and the rail is supported by the midway portion. The present invention relates to a structure for supporting a sliding door support rail in an automobile.

Conventionally, there is a support portion structure of a slide door support rail in the automobile described in Patent Document 1 below. According to this publication, the outer side surface of the vehicle body of the automobile is formed by the outer panel, and the first portion constituting the middle part in the vertical direction of the outer panel is bent toward the inside of the vehicle body, so that the outer surface of the outer panel is formed. A concave groove extending in the front-rear direction is formed on the side, a slide door support rail is disposed in the concave groove, and the rail is supported by the first portion. On the other hand, a bracket protrudes from the slide door, a roller supported on the protruding end of the bracket is fitted into the rail, and moves back and forth along the rail. A roller, a bracket, and a rail are supported by the first portion of the outer panel of the vehicle body.

Japanese Patent Laid-Open No. 10-316047

By the way, the first part of the outer panel supports a large external force from the slide door side via the rail, but the first part protrudes toward the inside of the vehicle body with the outer surface side forming a concave groove shape. Therefore, stress concentration tends to occur at the base portion of the first portion due to the external force applied from the slide door side.

According to the above publication, a reinforcing plate is attached to the inner surface of the vehicle body at the protruding end of the first part. The reinforcing plate directly reinforces the base of the first part. Therefore, it is difficult to eliminate the stress concentration that tends to occur at the base portion of the first portion depending on the reinforcing plate.

Therefore, in the prior art, since the stress concentration tends to occur at the base portion of the first portion, the support strength of the slide door with respect to the first portion of the outer panel becomes insufficient. & Vibration) may occur.

The present invention has been made paying attention to the above-described circumstances, and an object of the present invention is to improve the support strength of the slide door with respect to the outer panel of the vehicle body, and to improve the NV of the vehicle when traveling. It is to prevent the occurrence.

According to the first aspect of the present invention, the outer surface of the side portion of the vehicle body 2 is formed by the outer panel 5, and the first portion 17 constituting the middle portion in the vertical direction of the outer panel 5 is bent toward the inner side of the vehicle body 2, thereby A groove 18 that extends in the front-rear direction is formed on the outer surface side of the slide 5. A slide door 13 support rail 19 is disposed in the groove 18, and the rail 19 is supported by the first portion 17. In the support structure of the door support rail, each of the first portion 17 of the outer panel 5 and the second portion 24 extending integrally downward from the lower edge portion of the first portion 17 is provided inside the vehicle body 2. The first reinforcing plate 26 coupled to the surface and the second reinforcing plate 27 coupled to the inner surface of the vehicle body 2 of the first reinforcing plate 26 are provided, and the concave groove formed in the first portion 17 is provided. A closed section 31 is formed between the first and second reinforcing plates 26 and 27 in a lower region 18 .

According to a second aspect of the present invention, in addition to the first aspect of the present invention, in an upper region of the concave groove 18 formed in the first portion 17, the upper portion of the first portion 17 is integrated upward. A closed cross-section 32 is formed between at least any two members of the third portion 25 of the outer panel 5 extending to the first and second reinforcing plates 26 and 27.

In this section, the reference numerals appended to the above terms are not intended to limit the technical scope of the present invention to the contents of the “Examples” section described later.

The effects of the present invention are as follows.

In the first aspect of the invention, the outer side surface of the vehicle body is formed by the outer panel, and the first portion constituting the middle part in the vertical direction of the outer panel is bent toward the inner side of the vehicle body, so that the outer surface side of the outer panel is In the support structure of a slide door support rail in an automobile in which a concave groove extending in a direction is formed, a slide door support rail is disposed in the concave groove, and the rail is supported by the first portion, the outer panel A first reinforcing plate coupled to the inner surface of each of the first portion and a second portion integrally extending downward from the lower edge of the first portion; and A second reinforcing plate coupled to the inner surface of the vehicle body is provided, and a closed cross section is formed between the first and second reinforcing plates in a lower region of the concave groove formed in the first portion.

For this reason, as described above, the first and second reinforcing plates are positioned below the first portion by the first and second reinforcing plates that have higher strength and rigidity in having a closed cross section. The combination according to the above has high strength and rigidity, and effectively reinforces the first part so that the combination supports the first part from below. Therefore, the first portion strongly opposes the external force applied downward from the slide door side to the first portion of the outer panel via the rail in the concave groove , that is, the slide door for the outer panel of the vehicle body. The support strength of the is improved more reliably.

Further, the second portion of the outer panel is generally flat, but as described above, the combination including the second portion has high strength and rigidity. The second portion is effectively reinforced to prevent the occurrence of NV in the second portion.

According to a second aspect of the present invention, in the upper region of the concave groove formed in the first portion, a third portion of the outer panel that integrally extends upward from the upper edge of the first portion; A closed cross section is formed between at least any two members of the first and second reinforcing plates.

For this reason, the other combination of the third part positioned above the first part and the first and second reinforcing plates has the closed cross section and has high strength and rigidity. This other combination effectively reinforces the first part from above. Therefore, the first part strongly opposes the external force applied to the first part of the outer panel through the rail in the concave groove from the slide door side, that is, the support strength of the slide door with respect to the outer panel of the vehicle body is Furthermore, it improves reliably.

In addition, the third portion of the outer panel is generally flat. However, as described above, the other combination including the third portion has high strength and rigidity. The body effectively reinforces the third portion of the outer panel and prevents the occurrence of NV in the third portion.

An object of the present invention is to provide a support structure for a slide door support rail in an automobile, and to improve the support strength of the slide door with respect to the outer panel of the vehicle body and to prevent the occurrence of NV when the automobile is running. In order to realize, the best mode for carrying out the present invention is as follows.

That is, the outer surface of the side part of the vehicle body is formed by the outer panel, and the first portion constituting the middle part in the vertical direction of the outer panel is bent toward the inner side of the vehicle body, so that the outer surface side of the outer panel extends in the front-rear direction. A groove is formed. A slide door support rail is disposed in the concave groove, and the rail is supported by the first portion.

A first reinforcing plate coupled to the inner surface of each of the first portion of the outer panel and a second portion integrally extending downward from the lower edge of the first portion; and the first reinforcing plate And a second reinforcing plate coupled to the inner surface of the vehicle body, and a closed cross section is formed between the first and second reinforcing plates in a lower region of the concave groove formed in the first portion. The

In order to describe the present invention in more detail, Example 1 will be described with reference to FIGS. 1-3.

In FIG. 1, reference numeral 1 denotes a one-box type vehicle, and an arrow Fr indicates the front of the vehicle 1.

The vehicle body 2 of the automobile 1 includes left and right side walls 3, and each of the side walls 3 includes an inner panel 4 and an outer panel 5 made of sheet metal that face each other in the width direction of the vehicle body 2 and are joined to each other by spot welding S. The outer panel 5 forms a lateral outer surface of the vehicle body 2, and the inside of the vehicle body 2 surrounded by the left and right side walls 3 serves as a vehicle compartment 6. Reference numeral 7 denotes a wheel, and the vehicle body 2 is supported on the road surface 8 by the wheel 7.

A slide door device 11 is provided on the side wall 3. The sliding door device 11 includes a door opening 12 formed on the side wall 3 for communicating the inside and outside of the vehicle compartment 6, a sliding door 13 that closes the door opening 12 so that the door opening 12 can be opened and closed, and the sliding door 13 is an outer surface of the side wall 3. A support means 14 for supporting the slide door 13 is provided on the side wall 3 so that the door opening 12 can be moved rearward from the position where the door opening 12 is closed and can be moved back and forth.

The support means 14 will be described. The first portion 17 constituting the middle part in the vertical direction of the outer panel 5 behind the door opening 12 is bent toward the inside of the vehicle body 2, and this bending causes the outer panel 5 to be bent. A concave groove 18 extending in the front-rear direction is formed on the outer surface side.

In the concave groove 18, a sheet metal rail 19 for supporting the sliding door 13 extending in the front-rear direction along the concave groove 18 is disposed, and each section of the rail 19 in the longitudinal direction has a C shape, The fastener 20 supports the first portion 17. On the other hand, a bracket 21 protrudes from the sliding door 13 toward the concave groove 18, and a roller 22 is supported on the protruding end portion of the bracket 21, and the roller 22 is fitted into the rail 19. It is possible to roll in the front-rear direction with respect to the inner surface.

The sliding door 13 is supported by the first portion 17 of the outer panel 5 by the roller 22, the bracket 21, and the rail 19, and when the sliding door 13 is moved forward and backward A and B to open and close, By the rolling of the roller 22 with respect to the rail 19, the sliding door 13 can be easily opened and closed.

In the above configuration, the first portion 17 of the outer panel 5, the second portion 24 that integrally extends downward from the lower edge portion of the first portion 17, and the upper portion from the upper edge portion of the first portion 17. A first reinforcing plate 26 is provided on the inner surface of the vehicle body 2 with respect to the third portion 25 that integrally extends toward the surface by the above-described fastener 20 and spot welding S. A second reinforcing plate 27 is provided on the inner surface of the vehicle body 2 of the first reinforcing plate 26 and is joined by spot welding S.

In the above case, both the first and second reinforcing plates 26 and 27 are made of the same material as that of the first portion 17, and each plate thickness is made larger than that of the outer panel 5 and has a higher strength. Yes. Further, the first and second reinforcing plates 26 and 27 are provided so as to straddle the first to third portions 17, 24, and 25, as viewed from the side of the automobile 1 (FIG. 2).

In FIG. 1, a first closed section 30 is formed between the second portion 24 and the first reinforcing plate 26 in the lower region near the first portion 17 in a front view of the automobile 1. A second closed section 31 is formed between the first and second reinforcing plates 26 and 27 in a lower area near the concave groove 18 formed in the first portion 17. In this case, each of the closed cross sections 30 and 31 is gradually reduced as the respective width dimension goes downward from the first portion 17 side, that is, the shape of each of the closed cross sections 30 and 31 does not change abruptly. It is supposed to be.

Further, in the upper region of the first portion 17, the first portion 17, the third portion 25, and the first reinforcing plate 26 of the first and second reinforcing plates 26, 27 are connected to each other. Three closed sections 32 are formed.

According to the above configuration, the first portion 17 of the outer panel 5 and the second portion 24 integrally extending downward from the lower edge portion of the first portion 17 are coupled to the inner surface of the vehicle body 2. A first reinforcing plate 26 and a second reinforcing plate 27 coupled to the inner surface of the vehicle body 2 of the first reinforcing plate 26 are provided, and in a lower region of the concave groove 18 formed in the first portion 17. A closed section 31 is formed between the first and second reinforcing plates 26 and 27.

For this reason, as described above, the first and second reinforcing plates 26 and 27 each have a greater strength than the first portion 17, and the first closed cross-section 30 is between these reinforcing plates 26 and 27. Since they are formed, the first and second reinforcing plates 26 and 27 cooperate with each other to maintain high strength and rigidity. The combination of the second portion 24 located below the first portion 17 and the first and second reinforcing plates 26 and 27 with both the reinforcing plates 26 and 27 has high strength and rigidity. The first portion 17 is effectively reinforced so that the combination supports the first portion 17 from below. Therefore, the first portion 17 strongly opposes the external force applied downward from the slide door 13 side to the first portion 17 of the outer panel 5 through the rail 19 in the concave groove 18. The support strength of the slide door 13 with respect to the outer panel 5 of the vehicle body 2 is more reliably improved.

The second portion 24 of the outer panel 5 has a generally flat shape. However, as described above, the combination including the second portion 24 has high strength and rigidity. This effectively reinforces the second portion 24 of the outer panel 5 and prevents the occurrence of NV in the second portion 24.

The following figures show Examples 2 and 3. Each of these embodiments is common in many respects to the configuration and operational effects of the first embodiment. Therefore, regarding these common items, common reference numerals are attached to the drawings, and redundant description thereof is omitted, and different points are mainly described. In addition, the configurations of the respective parts in each of these embodiments may be variously combined in light of the object and the effect of the present invention.

In order to explain the present invention in more detail, Example 2 will be described with reference to FIG.

In FIG. 4, the first reinforcing plate 26 is joined so as to be almost entirely in surface contact with the inner surface of the vehicle body 2 of each of the first portion 17, the second portion 24, and the third portion 25 of the outer panel 5. The third closed cross-section 32 is formed between the first and second reinforcing plates 26 and 27 in the upper region of the concave groove 18 formed in the first portion 17.

In order to describe the present invention in more detail, Example 3 will be described with reference to FIG.

In FIG. 5, the upper edge portion of the first reinforcing plate 26 is coupled to the surface of the first portion 17 on the inner side of the vehicle body 2, and in the upper region of the concave groove 18 formed in the first portion 17 , The third closed section 32 is formed between the first portion 17, the third portion 25, and the second reinforcing plate 27.

According to each embodiment, in the upper region of the groove 18 formed in the first portion 17, the outer panel 5 that integrally extends upward from the upper edge of the first portion 17. A third closed section 32 is formed between at least any two members of the third portion 25 and the first and second reinforcing plates 26 and 27.

For this reason, the other combination of the third portion 25 located above the first portion 17 and the first and second reinforcing plates 26 and 27 has the third closed section 32 and is large. Since it has strength and rigidity and there are other combinations, the first portion 17 is effectively reinforced from above. Therefore, the first portion 17 strongly opposes the external force applied to the first portion 17 of the outer panel 5 through the rail 19 in the concave groove 18 from the slide door 13 side, that is, the outer panel 5 of the vehicle body 2. The support strength of the slide door 13 with respect to is improved more reliably.

The third portion 25 of the outer panel 5 has a generally flat shape. However, as described above, the other combination including the third portion 25 has high strength and rigidity. The third portion 25 of the outer panel 5 is effectively reinforced by the other combination, and the occurrence of NV in the third portion 25 is prevented and suppressed.

FIG. 4 is a cross-sectional view taken along line 1-1 of FIG. 1 is a rear side view of an automobile according to a first embodiment. FIG. FIG. 3 shows the first embodiment and is a cross-sectional view taken along line 3-3 in FIG. FIG. 2 shows a second embodiment and corresponds to FIG. FIG. 10 is a diagram illustrating Example 3 and corresponding to FIG. 1.

DESCRIPTION OF SYMBOLS 1 Automobile 2 Car body 3 Side wall 4 Inner panel 5 Outer panel 6 Car compartment 7 Wheel 8 Road surface 11 Slide door apparatus 12 Door opening 13 Slide door 14 Support means 17 1st part 18 Recessed groove 19 Rail 24 2nd part 25 3rd part 26 2nd 1 Reinforcing plate 27 2nd reinforcing plate 30 Closed section 31 Closed section 32 Closed section A Forward movement B Reverse movement

Claims (2)

The outer surface of the side part of the vehicle body is formed by an outer panel, and a first groove constituting the middle part in the vertical direction of the outer panel is bent toward the inner side of the vehicle body, thereby forming a groove extending in the front-rear direction on the outer surface side of the outer panel. In the support structure for a slide door support rail in an automobile in which a slide door support rail is disposed in the groove and the rail is supported by the first part, the first part of the outer panel and the first part A first reinforcing plate coupled to the inner surface of the vehicle body and a second portion integrally extending downward from the lower edge portion of the first portion, and coupled to the inner surface of the vehicle body of the first reinforcing plate And a second cross section formed between the first and second reinforcing plates in a lower region of the concave groove formed in the first portion. Support structure of door support rail. A third portion of the outer panel that integrally extends upward from an upper edge of the first portion in an upper region of the concave groove formed in the first portion ; and the first and second reinforcements. 2. The support structure for a slide door support rail in an automobile according to claim 1, wherein a closed cross section is formed between at least two members of the plate.

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