JP6575453B2 - Car body - Google Patents

Description

  The present invention relates to an automobile body provided with a side outer panel and a side inner panel.

  In an automobile body such as a minivan, a one box, a wagon, etc., a side outer panel is disposed on a side portion that is located behind the front door and that is not provided with a slide door. A side inner panel that reinforces the side outer panel is disposed on the inner side in the left-right direction of the side outer panel. And spot welding etc. are performed in the multiple places of the peripheral part of a side outer panel, and the peripheral part of a side inner panel, and the side outer panel and the side inner panel are mutually joined.

The design surface of the side outer panel is painted in the same manner as the other outer plates of the vehicle body. Then, the painted vehicle body is conveyed into a drying furnace and heated by a heater or the like, and the coating film on each outer plate of the vehicle body is dried.
For example, a roof panel of Patent Document 1 is an example of a bead formed by a convex portion or a concave portion on an outer plate of a vehicle body. In this roof panel, a quenching portion is formed so as to intersect the bead in order to increase the strength.

JP2013-203265A

  By the way, in order to simplify the structure of the side outer panel, there is a case where it is desired to continuously provide the side outer panel from a position adjacent to the rear end of the front door of the vehicle body to the rear end position of the vehicle body. However, if the length of the side outer panel in the front-rear direction is increased, the amount of elastic deformation that the side outer panel tends to expand in the front-rear direction increases when the vehicle body is heated in the drying furnace. In some cases, when the side outer panel cannot withstand expansion in the front-rear direction, the side outer panel may be plastically deformed, and the appearance of the side outer panel may be impaired.

  Therefore, conventionally, in order to make it difficult for plastic deformation of the side outer panel to occur, a device for increasing the rigidity of the side outer panel has been devised. For example, measures such as formation of a bead shape extending in the entire front and rear direction of the side outer panel, an increase in the thickness of the side outer panel, and sticking of a reinforcing material to the back surface of the side outer panel are taken. Further, for example, measures are taken in which the side outer panel is divided into a front portion and a rear portion in the front-rear direction, and the rear end portion of the front portion and the front end portion of the rear portion are welded.

  However, the device for increasing the rigidity of the side outer panel causes problems that the manufacturing of the side outer panel is complicated and the amount of the material used for the side outer panel increases. Therefore, in order to make it difficult for plastic deformation to occur in the side outer panel, a new device other than a device for increasing rigidity is required.

  The present invention has been made in view of the above problems, and provides an automobile body that can avoid the occurrence of plastic deformation in the side outer panel and can maintain the appearance of the appearance with a very simple shape. It was obtained by trying.

One aspect of the present invention is a side that is provided from a position adjacent to a rear end of a front door of a vehicle body to a rear end position of the vehicle body, and that forms a roof side that is located on a side of a roof panel and above a side glass. With an outer panel,
In the intermediate position of the side outer panel in the front-rear direction on the design surface, the vehicle body has a deformation absorbing groove that is recessed inward in the left-right direction or bulging outward in the left-right direction and is formed in the vertical direction.

The automobile body has a new structure that absorbs deformation that occurs in the front-rear direction of the side outer panel when heated to a high temperature in a drying furnace or the like.
Specifically, at the intermediate position in the front-rear direction on the design surface of the side outer panel, a deformation absorbing groove is formed that is recessed inward in the left-right direction or bulging outward in the left-right direction and along the vertical direction. When the automobile body is heated to a high temperature in a drying furnace or the like, the side outer panel tends to expand by receiving heat. At this time, since the peripheral edge portion of the side outer panel is restrained, the peripheral edge portion of the side outer panel cannot expand so as to spread in the front-rear direction and the vertical direction. Therefore, the side outer panel tends to be elastically deformed so that an intermediate portion in the front-rear direction swells toward the design surface side.

  At this time, the deformation absorbing groove is formed at the intermediate position in the front-rear direction on the design surface of the side outer panel, so that the portion positioned in front of the deformation absorbing groove extends rearward and the deformation absorbing groove A portion located behind the groove extends forward. Thereby, the side outer panel can be elastically deformed so that the width of the deformation absorbing groove in the front-rear direction is reduced. And it can avoid that plastic deformation arises in a side outer panel, without using the idea of raising the rigidity of a side outer panel.

In addition, the elastic deformation generated in the side outer panel can be restored to the original state when the automobile body is cooled. Thereby, the appearance of the appearance of the side outer panel can be favorably maintained. Even if a part of the deformation that occurs in the side outer panel is not elastic deformation but plastic deformation, the plastic deformation occurs in the deformation absorbing groove. Also by this, it can prevent that the appearance of the external appearance of a side outer panel is impaired.
Further, it is not necessary to divide the side outer panel into a front part and a rear part in the front-rear direction, and the structure can be avoided from becoming complicated.

  Therefore, according to the automobile body, it is possible to avoid the occurrence of plastic deformation in the side outer panel and to maintain the appearance of the appearance with a very simple device.

  The state in which the deformation absorbing groove is recessed in the left-right direction refers to a state in which the deformation absorbing groove protrudes inward in the left-right direction. Moreover, the state where the deformation absorbing groove bulges outward in the left-right direction means a state where the deformation absorbing groove protrudes outward in the left-right direction.

A perspective view showing the whole automobile body concerning an embodiment. Explanatory drawing which shows the periphery of the side outer panel in the motor vehicle body concerning embodiment. The figure which shows the side outer panel and the side inner panel concerning embodiment, and is the III-III sectional view taken on the line in FIG. Sectional drawing which shows the deformation | transformation absorption groove | channel in the side outer panel concerning embodiment. Sectional drawing which shows the side outer panel before a heat deformation concerning embodiment. Sectional drawing which shows the side outer panel at the time of the heat deformation concerning embodiment. Sectional drawing which shows the other side outer panel at the time of a heat deformation concerning embodiment.

A preferred embodiment of the above-described automobile body will be described with reference to the drawings.
As shown in FIGS. 1 to 3, the vehicle body 1 of this embodiment includes a side outer panel 3 provided from a position L1 adjacent to the rear end of the front door 12 of the vehicle body 1 to a rear end position L2 of the vehicle body 1. And a side inner panel 4 disposed on the inner side of the side outer panel 3 in the left-right direction W.

  The peripheral edge 31 of the side outer panel 3 and the peripheral edge 41 of the side inner panel 4 are joined to each other in a state where a space S is formed inside. A deformation absorbing groove that is recessed in the left-right direction (vehicle width direction) W and along the vertical direction (vehicle height direction) H at an intermediate position in the front-rear direction (vehicle length direction) L on the design surface 301 of the side outer panel 3. 32 is formed. Here, the design surface 301 of the side outer panel 3 refers to the outer surface of the side outer panel 3 and refers to the painted surface exposed to the outside of the automobile body 1.

  The side outer panel 3 and the side inner panel 4 constitute a part of the main body 2 of the automobile body 1. Here, the main body 2 refers to the frame of the car body 1 and is the car body 1 in a state where lid parts such as a hood 11, a front door 12, a slide door, and a back door are not attached. Say.

As shown in FIG. 1, the automobile body 1 of the present embodiment constitutes a minivan type automobile and constitutes an automobile on which three rows of seats are mounted. Usually, a sliding door that slides in the front-rear direction L and opens and closes the opening of the main body 2 is provided on at least one of the left and right side portions of the main body 2 that is located on the side of the rear seat in a minivan type automobile. It has been. In the vehicle body 1 of this embodiment, a slide door is provided on the right side. The side outer panel 3 in which the deformation absorbing groove 32 of this embodiment is formed is provided on the left side portion of the main body 2 where no sliding door is provided.
In addition, when the sliding door is provided in the left side part, the side outer panel 3 in which the deformation | transformation absorption groove | channel 32 was formed can be provided in the right side part.

  As shown in FIGS. 1 and 2, in the main body 2, the left and right front doors 12 are arranged to be openable and closable at the side of the opening 25 where the windshield 51 is arranged, and the front seats of the driver seat and the passenger seat. In the side of the rear seat, there are formed an opening in which the sliding door can be opened and closed, and an opening 27 in which the back door can be opened and closed. Moreover, the opening part 28 by which side glass 52A, 52B is arrange | positioned is formed in the left side part in which the slide door is not provided in the main body 2. As shown in FIG.

  As shown in FIG. 3, a roof panel 21 is disposed on the ceiling of the main body 2. The side outer panel 3 of this embodiment is formed continuously from the upper part of the side part of the main body 2 to the side part of the ceiling part, and is disposed adjacent to the side of the roof panel 21. The side outer panel 3 is formed in a shape including an upper corner portion in the side portion of the main body 2. The side outer panel 3 is a side of the roof panel 21 and constitutes a roof side located above the side glasses 52A and 52B.

  The side outer panel 3 of the present embodiment is arranged at the upper part of the left side portion of the main body 2, in other words, above the side glasses 52A and 52B. Another side outer panel 35 is disposed below the left side portion of the main body 2, in other words, below the side glasses 52A and 52B. The side outer panel 3 and the other side outer panel 35 are joined to each other in the vicinity of the upper ends of the side glasses 52A and 52B. The side inner panel 4 is continuously arranged inside the side outer panel 3 and another side outer panel 35 in the left-right direction W.

  As shown in FIGS. 2 and 3, the side outer panel 3 and the side inner panel 4 are joined to each other by spot welding (resistance welding) to the peripheral portions 31 and 41 located at the front, rear, and upper portions. Has been. Moreover, the lower part of the side outer panel 3 and the upper part of another side outer panel 35 are joined to each other by performing spot welding. Joined portions Y by spot hitting points are formed at a plurality of locations in each of the peripheral portions 31 and 41.

  The opening 28 of the main body 2 is formed so as to penetrate another side outer panel 35 and the side inner panel 4. The other side outer panel 35 and the side inner panel 4 are joined to each other by spot welding at peripheral portions located at the front, rear, and lower portions. The other side outer panel 35 and the side inner panel 4 are also joined to each other by spot welding the peripheral edge of the opening 28.

The lower part of the side outer panel 3 and the side inner panel 4 are joined to each other by spot welding performed on the periphery of the opening 28 via another side outer panel 35. The peripheral edge 31 of the side outer panel 3 and the peripheral edge 41 of the side inner panel 4 in this embodiment also include the peripheral edge on the upper side of the opening 28.
The side inner panel 4 is a panel that is not visually recognized, and has various bent shapes so as to supplement the rigidity of the side outer panel 3.

  The side outer panels 3 and 35 and the side inner panel 4 that are joined to each other are joined to the left side of the main body 2 that is located on the left side of the rear seat. Between each peripheral edge part 31 and 41 in the side outer panels 3 and 35 and the side inner panel 4, and the main body 2, the junction part Y by the spot hitting point is formed. The side outer panels 3 and 35 and the side inner panel 4 are joined to each other and joined to the main body 2 so that the positions of the peripheral portions 31 and 41 are fixed, and the peripheral portions 31 and 41 cannot extend and contract. It is restrained.

As shown in FIG. 2, the side glasses 52 </ b> A and 52 </ b> B positioned below the side outer panel 3 and the side inner panel 4 are divided into two at an intermediate position in the front-rear direction L. In the left side portion of the main body 2, a front side glass 52A and a rear side glass 52B are arranged side by side in the front-rear direction L.
In the same figure, each side glass 52A, 52B is shown with a dashed-two dotted line. Each of the side glasses 52A and 52B is disposed outside the pillar 24 formed in the main body 2 in the left-right direction W.

  A gap 53 having a width C1 in the front-rear direction L of 3 to 10 mm is formed between the front side glass 52A and the rear side glass 52B. The gap 53 is formed along the vertical direction H, and forms a parting line in the vertical direction H of the side glasses 52A, 52B. “Along the vertical direction H” means “along the vertical direction on the surface of the side glass 52A, 52B”, and “the vertical direction H when the gap 53 is viewed from the outside in the horizontal direction W”. It means "along."

  The deformation absorption groove 32 is formed along the vertical direction H so as to be connected above the gap 53 above the gap 53 between the front and rear side glasses 52A and 52B. The phrase “so that the deformation absorbing groove 32 is connected above the gap 53” means that the gap 53 and the deformation absorbing groove 32 are formed so as to be connected in one line. Further, “along the vertical direction H” means “along the design surface 301 of the side outer panel 3 along the vertical direction”, and “the deformation absorbing groove 32 is viewed from the outside in the left-right direction W”. Sometimes, along the vertical direction H ".

  The deformation absorbing groove 32 absorbs expansion (elongation) of the side outer panel 3 in the front-rear direction L. The side outer panel 3 is formed in a shape having a size in the front-rear direction L larger than that in the up-down direction H, that is, a long shape longer in the front-rear direction L. The side outer panel 3 is formed in a shape that swells outward in the left-right direction W in a cross section orthogonal to the front-rear direction L.

  As shown in FIG. 4, the cross section perpendicular to the vertical direction H of the deformation absorbing groove 32 has a shape that is recessed in a curved shape inside the horizontal direction W. The deformation absorbing groove 32 is formed so that the width in the front-rear direction L and the depth in the left-right direction W are constant over the entire length in the up-down direction H. The deformation absorption groove 32 includes a groove center portion 321 that is recessed in a curved shape inside the left-right direction W by a first radius of curvature, and a V-shaped flat portion 322 formed on both sides of the groove center portion 321 in the front-rear direction L. And a pair of groove side portions 323 formed in a curved shape with a second radius of curvature smaller than the first radius of curvature between the flat portion 322 and the general portion of the side outer panel 3. Note that the V-shaped flat portion 322 is not formed, and the groove center portion 321 and the pair of groove side portions 323 may be directly connected.

  The width C2 in the front-rear direction L of the deformation absorbing groove 32 of this embodiment is the same as the width C1 of the gap 53 in the front-rear direction L between the front and rear side glasses 52A, 52B. The width C2 of the deformation absorbing groove 32 in the front-rear direction L can be determined within a range of 3 to 10 mm. The width C2 in the front-rear direction L of the deformation absorbing groove 32 is a distance between the intersections X of the ridge line that forms the V-shaped flat portion 322 and the ridge line that forms the design surface 301 of the general portion of the side outer panel 3. .

When manufacturing the automobile body 1, spot welding is performed on the peripheral edge portion 31 of the side outer panel 3, 35 and the peripheral edge portion 41 of the side inner panel 4, and the side outer panel 3, 35 and the side inner panel 4 Are integrated. A space S for ensuring rigidity is formed between the side outer panels 3 and 35 and the side inner panel 4.
Further, the peripheral side portions 31 and 41 of the integrated side outer panels 3 and 35 and the side inner panel 4 are joined to the roof panel 21 and the floor panel by spot welding.

  FIG. 5 schematically shows the side outer panel 3 before being heated. As shown in the figure, the deformation absorbing groove 32 in the side outer panel 3 before being heated is formed in a state close to a V shape.

Moreover, as shown in FIG. 1, various coatings are performed on the design surface 301 of the main body 2 to which the roof panel 21, the fender panel 23, the side outer panel 3, and the like are attached. The main body 2 after painting is carried into a drying furnace that performs hot air, induction heating, and the like, and the coating film applied to the design surface 301 and the like is dried.
When the coating film is dried in the drying furnace, the main body 2 is heated to a high temperature of about 180 to 200 ° C.

  When the main body 2 is heated, the side outer panel 3 tries to expand due to heat. At this time, the peripheral edge portion 31 of the side outer panel 3 is joined to the peripheral edge portion 41 of the side inner panel 4 so that the peripheral edge portion 31 of the side outer panel 3 expands so as to spread in the front-rear direction L and the vertical direction H. It is not possible. Therefore, the side outer panel 3 tends to be elastically deformed so that an intermediate portion in the front-rear direction L swells toward the design surface 301 side.

  At this time, the deformation absorbing groove 32 is formed at an intermediate position in the front-rear direction L on the design surface 301 of the side outer panel 3, so that the side outer panel 3 has a central portion in the front-rear direction L as shown in FIG. , The portion located in front of the deformation absorbing groove 32 extends rearward and the portion located in the rear of the deformation absorbing groove 32 extends forward. Thereby, the side outer panel 3 can elastically deform so that the width | variety C2 of the front-back direction L of the deformation | transformation absorption groove | channel 32 may be reduced. And it can avoid that plastic deformation arises in the side outer panel 3 without devising the rigidity of the side outer panel 3 to be increased. In the figure, the deformation of the deformation absorbing groove 32 is exaggerated for easy understanding.

The elastic deformation generated in the side outer panel 3 can be restored to the original state when the main body 2 is carried out of the drying furnace and cooled. Thereby, the appearance of the appearance of the side outer panel 3 can be maintained well. Even if a part of the deformation that occurs in the side outer panel 3 becomes plastic deformation instead of elastic deformation, the plastic deformation occurs in the deformation absorbing groove 32. Also by this, it can prevent that the appearance of the external appearance of the side outer panel 3 is impaired.
Moreover, it is not necessary to divide the side outer panel 3 into the front part and the rear part of the front-back direction L, and it can also avoid that the structure becomes complicated.

  Further, the deformation absorbing groove 32 of the present embodiment is formed above the gap 53 between the side glasses 52A and 52B so as to be continuous with the gap 53. Thereby, the deformation | transformation absorption groove | channel 32 can be made not conspicuous and the appearance of the external appearance of the side outer panel 3 can be prevented from being impaired by the formation of the deformation absorption groove 32.

  Therefore, according to the automobile body 1 of the present embodiment, it is possible to avoid the plastic deformation of the side outer panel 3 and to maintain the appearance of the appearance with a very simple device.

The side outer panel 3 can also have the following configuration.
The deformation absorbing groove 32 can also be formed in a shape that swells outward in the left-right direction W at an intermediate position in the front-rear direction L on the design surface 301 of the side outer panel 3. Also in this case, the shape of the deformation absorption groove 32 can be the same as the case where the deformation absorption groove 32 is recessed in the left-right direction W. In FIG. 7, the deformation | transformation state of the deformation | transformation absorption groove | channel 32 when the side outer panel 3 expand | swells with a heat | fever is shown. Also in this case, the same effect as when the deformation absorbing groove 32 is recessed in the left-right direction W can be obtained.

A groove shape extending in the front-rear direction L may be formed at an appropriate position in the vertical direction H on the design surface 301 of the side outer panel 3.
The side glass may be divided into three at an intermediate position in the front-rear direction L. In this case, a front side glass, an intermediate side glass, and a rear side glass are sequentially arranged on the main body 2 from the front side in the front-rear direction L. In this case, the deformation absorbing groove 32 can be positioned above the gap between the front side glass and the intermediate side glass, or above the gap between the intermediate side glass and the rear side glass.

  Further, a part of the main body 2 is formed at an intermediate portion in the range of the front-rear direction L in which the side glasses 52A and 52B are disposed on the side portions of the main body 2, and a design surface is formed outside the left-right direction W. Pillars may be arranged. In this case, the pillar is disposed at a site where the side glasses 52A and 52B are disposed. In this case, the deformation absorbing groove 32 can also be formed above the pillar.

  Further, the side outer panel 3 can be positioned below the side glasses 52A and 52B. However, a concavo-convex shape is formed on the design surface of the side outer panel 35 located below the side glasses 52A and 52B by arrangement of a wheel house or the like, and the side outer panel 35 is less likely to be plastically deformed when heated. .

  In this embodiment, the deformation absorbing groove 32 is formed in the side outer panel 3 constituting the roof side. The roof side is a portion having a small uneven shape and easily undergoes plastic deformation during heating. Thus, in this embodiment, the effect of preventing plastic deformation (thermal strain) on the roof side can be obtained remarkably.

  In addition, this invention is not limited only to embodiment, It is possible to comprise further different embodiment in the range which does not deviate from the summary.

DESCRIPTION OF SYMBOLS 1 Auto body 12 Front door 2 Main body 3 Side outer panel 301 Design surface 31 Peripheral part 32 Deformation absorption groove 4 Side inner panel 41 Peripheral part 52A, 52B Side glass L Front-rear direction W Left-right direction H Vertical direction

Claims (5)

Provided from the position adjacent to the rear end of the front door of the vehicle body to the rear end position of the vehicle body, provided on the side of the roof panel, comprising a side outer panel that constitutes the roof side positioned above the side glass,
A vehicle body, wherein a deformation absorbing groove is formed at a middle position in the front-rear direction on the design surface of the side outer panel. A side inner panel disposed on the inner side in the left-right direction of the side outer panel;
The automobile body according to claim 1, wherein the side outer panel and the side inner panel are joined to each other at a peripheral edge portion thereof. The side glass is divided into a plurality at an intermediate position in the front-rear direction,
The automobile body according to claim 1, wherein the deformation absorbing groove is formed above a gap between the side glasses. The gap between the side glasses is formed along the vertical direction,
The automobile body according to claim 3, wherein the deformation absorbing groove is formed along a vertical direction so as to be connected above a gap between the side glasses.   5. The automobile body according to claim 1, wherein a cross section of the deformation absorbing groove perpendicular to the vertical direction has a shape that is recessed in a curved shape inside the horizontal direction.

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