JP2008056114A - Vehicle door structure - Google Patents

Abstract

The present invention suppresses permanent deformation due to thermal distortion of a door.
An inner rear panel of a door inner panel is formed thicker than an inner center panel. Therefore, even when the entire door 12 is placed in a high temperature environment, the door narrow portion 42 that easily undergoes thermal expansion deformation can be reinforced, and the inner rear panel 24 located in the door narrow portion 42 is rearward in the vehicle front-rear direction and the vehicle upper and lower portions. The thermal expansion rate of the lower portion in the direction can also be kept low. In addition, since the inner rear panel 24 located on the narrow door portion 42 is thicker than the door outer panel 18 on the rear side in the vehicle front-rear direction and on the lower side in the vehicle vertical direction, the internal temperature rises more than the door outer panel 18. Slow and thermal expansion rate is low. Thereby, thermal expansion of the door outer panel 18 in the narrow door portion 42 can be restrained by the inner rear panel 24 and suppressed. As a result, permanent deformation due to thermal strain of the door outer panel 18 in the narrow door portion 42 can be suppressed.
[Selection] Figure 1

Description

  The present invention relates to a vehicle door structure, and more particularly, to a vehicle door structure configured to include a door outer panel disposed on the door outer side and a door inner panel disposed on the door inner side.

For example, the following is known as a door structure for vehicles (for example, refer to patent documents 1). For example, Patent Document 1 discloses an example of a vehicle door. In the example described in Patent Document 1, the door includes a door body and an outer panel as main components. The door main body is formed of a frame-like frame (frame structure), and the outer panel is fixed to the outside of the door main body. Patent Document 1 describes that the entire door including the door main body and the outer panel is preferably made of a light alloy such as an aluminum alloy or a magnesium alloy.
JP 2004-314696 A JP 2004-352083 A Japanese Patent Laid-Open No. 2004-243807

  However, as described above, the entire door is made of a light alloy having a large linear expansion coefficient, such as an aluminum alloy or a magnesium alloy, and the entire door is placed in a high-temperature environment (such as a baking paint drying path). In some cases, the entire door is thermally expanded. At this time, since the outer panel is formed of a single plate, the thermal expansion amount is larger than that of the door body. For this reason, in the above-mentioned door, a difference arises in the thermal expansion form of the door main body side and the outer panel side. Therefore, due to the difference in thermal expansion between the door body side and the outer panel side, permanent deformation due to thermal strain may occur on the outer panel side which is the door outer plate portion of the door.

  This invention is made | formed in view of the said situation, The objective is to provide the vehicle door structure which can suppress the permanent deformation | transformation of a door.

In order to solve the above problem, the vehicle door structure according to claim 1 includes a door outer panel,
The door outer panel is disposed so as to face the door thickness direction, and is combined with the door outer panel at the outer peripheral edge portion, and the door width direction one end side and the door height direction one end side are the door width direction center. A portion that is disposed on the door outer panel side with respect to the side portion and includes at least a portion on one end side in the door width direction and one end side in the door height direction is defined as a first region, and a portion different from the first region is defined as a second region. In this case, the door inner panel in which the first region is formed thicker than the second region, and one end side of the door inner panel is one end side in the door width direction and one end side in the door height direction. A door reinforcing member coupled to the portion and having the other end coupled to a portion on the other end side in the door width direction of the door inner panel.

  In the vehicle door structure according to claim 1, the door width direction corresponds to the vehicle front-rear direction when the vehicle door structure is applied to a side door of a vehicle, for example. Is applied to the rear door of the vehicle, it corresponds to the vehicle width direction. Also, the door thickness direction is equivalent to the vehicle width direction when the vehicle door structure is applied to a side door of a vehicle, for example, when the vehicle door structure is applied to a rear door of the vehicle. Corresponds to the vehicle longitudinal direction. Furthermore, the door height direction corresponds to the vehicle vertical direction when the vehicle door structure is applied to a side door or a rear door of the vehicle, for example.

  In the vehicle door structure according to the first aspect, a portion of the door inner panel on one end side in the door width direction and one end side in the door height direction is arranged closer to the door outer panel than a portion on the center side in the door width direction. For this reason, in the door panel body constituted by the door inner panel and the door outer panel, the door width direction one end side and the door height direction one end side are narrower in the door thickness direction than the door width direction center. The door is narrow.

  And according to the vehicle door structure of Claim 1, a door inner panel is a 1st area | region containing at least the part of the door width direction one end side and door height direction one end side located in this door width narrow part. The plate is thicker than the second region different from the first region (that is, the portion located in the other wide door portion).

  Therefore, even when the entire door is placed in a high-temperature environment, for example, a door narrow portion that easily deforms due to thermal expansion (this portion is a surface in the thickness direction of the door: since the thickness is small, it tends to be deformed during thermal expansion). While being able to reinforce, the thermal expansion rate of the door inner panel located at one end side in the door width direction and one end side in the door height direction can be suppressed to be low. Thereby, thermal expansion of the door outer panel in the narrow door portion can be restrained and suppressed by the door inner panel. As a result, permanent deformation due to thermal strain of the door outer panel in the narrow door portion can be suppressed.

  According to the vehicle door structure of the first aspect, the door inner panel located at the narrow door portion has one end side in the door width direction and one end side in the door height direction, and the other end is the door inner panel. One end side of the door reinforcing member coupled to the other end portion of the door width direction is coupled.

  Therefore, even when the entire door is placed in a high temperature environment, for example, the thermal expansion of the door outer panel in the narrow door portion can be restrained and suppressed by the door reinforcing member. Thereby, the permanent deformation by the thermal strain of the door outer panel in a door narrow part can be suppressed more.

  The vehicle door structure according to claim 2 is the vehicle door structure according to claim 1, wherein the door inner panel constitutes at least a part of the first region and is arranged at one end side in the door width direction. The door width direction one end side panel portion including at least the door width direction one end side and the door height direction one end side, and at least a part of the second region, arranged at the other end in the door width direction In addition, the door width direction one end panel portion provided separately from the door width direction one end side panel portion, and the door width direction one end side panel portion and each other end portion being overlapped and joined in the door thickness direction And an end panel portion.

  According to the vehicle door structure of claim 2, the door inner panel includes at least one end portion in the door width direction and one end portion in the door height direction, which are located in the narrow door width portion, on one end side in the door width direction. A door width direction one end side panel portion is provided. This door width direction one end side panel part is formed thickly by being provided in the 1st field.

  Therefore, even when the entire door is placed in a high-temperature environment, for example, a door narrow portion that easily deforms due to thermal expansion (this portion is a surface in the thickness direction of the door: since the thickness is small, it tends to be deformed during thermal expansion). While being able to reinforce, the thermal expansion rate of the door width direction one end side of the door width direction one end side panel part located in this door width narrow part and the door height direction one end side can be suppressed low. Thereby, the thermal expansion of the door outer panel in the narrow door portion can be restrained and suppressed by the door width direction one end side panel portion.

  In particular, according to the vehicle door structure of the second aspect, the door width direction other end side panel portion is divided and provided on the door width direction other end side of the door width direction one end side panel portion. The door width direction one end side panel portion and the door width direction other end side panel portion are joined to each other with their end portions overlapped in the door thickness direction.

  Therefore, the rigidity of the one end side panel portion in the door width direction can be increased by this connecting portion. In addition, the door width direction one end side panel portion is coupled to the door reinforcing member at the door width direction one end side and the door height direction one end side, and the rigidity of the door reinforcing member is also increased. Thereby, even when the entire door is placed in a high temperature environment, for example, the rotational displacement of the panel portion in the door width direction due to the thermal expansion force of the door outer panel can be suppressed. As a result, the thermal expansion of the door outer panel in the narrow door portion can be further suppressed.

  The vehicle door structure according to claim 3 is the vehicle door structure according to claim 1 or 2, wherein the door inner panel constitutes at least a part of the first region, and the door height direction. A door height direction one end side panel part including at least a portion on the one end side in the door width direction and one end side in the door height direction, and at least a part of the second region, A door height direction other end side panel portion, which is arranged on the other end side in the height direction and provided separately from the one end side panel portion in the door height direction, and to which a panel reinforcing member is coupled. It is structured.

  According to the vehicle door structure of claim 3, the door inner panel includes a door height direction one end side panel portion and a door height direction other end side panel portion divided in the door height direction. Has been. And the panel reinforcement member is couple | bonded with the door height direction other end side panel part. Therefore, even when the entire door is placed in a high temperature environment, for example, the thermal expansion rate of the panel portion at the other end in the door height direction can be kept low by restraining with the panel reinforcing member.

  According to the vehicle door structure of the third aspect, the door height direction one end side panel portion constitutes at least part of the first region of the inner panel, and at least part of the second region. The plate thickness is formed thicker than the panel portion on the other end side in the door height direction. Therefore, the door height direction one end side panel portion is slower in heat transfer speed than the door height direction other end side panel portion. Thereby, the thermal expansion rate of the door height direction other end side panel part and the door height direction one end side panel part which were restrained by the panel reinforcement member at a low thermal expansion rate can be matched (that is, both Both panels have a low thermal expansion rate). And the thermal expansion of a door outer panel can be restrained and restrained by the door height direction one end side panel part and the door height direction other end side panel part by which this thermal expansion rate was restrained low.

  And according to the vehicle door structure of Claim 3, the board thickness of a door height direction other end side panel part may be thin. Therefore, the mass of the door inner panel, and thus the entire door can be reduced.

  The vehicle door structure according to claim 4 is the vehicle door structure according to claim 3, wherein the door height direction one end side panel portion and the door height direction other end side panel portion are mutually opposite ends. Parts are overlapped and joined in the door thickness direction, and the panel reinforcing member is joined to the joining portion between the door height direction one end side panel portion and the door height direction other end side panel portion. It is characterized by.

  In the vehicle door structure according to claim 4, the one end side panel portion in the door height direction and the other end panel portion in the door height direction are joined to each other with their end portions overlapped in the door thickness direction. Moreover, a panel reinforcing member is coupled to a coupling portion between the door height direction one end side panel portion and the door height direction other end side panel portion.

  Therefore, the thermal expansion directions of the door height direction one end side panel portion and the door height direction other end side panel portion can be matched. Accordingly, the thermal expansion of the door outer panel can be reliably restrained and suppressed at the door height direction one end side panel portion and the door height direction other end side panel portion.

  The vehicle door structure according to claim 5 is the vehicle door structure according to claim 3 or claim 4, wherein the door height direction one end side panel portion and the door height direction other end side panel portion are: The door inner panel is arranged on one end side in the door width direction with respect to the central portion in the door width direction.

  According to the vehicle door structure of claim 5, the door height direction one end side panel portion and the door height direction other end side panel portion are in the door width direction rather than the door width direction center portion of the door inner panel. It is arranged on one end side. Therefore, the area of the panel portion on the other end side in the height direction of the door can be reduced, and the mass of the door inner panel and thus the entire door can be further reduced.

  As described above in detail, according to the present invention, the permanent deformation of the door can be suppressed even when the entire door is placed in, for example, a high temperature environment. Thereby, for example, it is possible to improve the accuracy of building the door on the vehicle body.

[First embodiment]
First, a first embodiment of the present invention will be described with reference to FIGS.

  FIGS. 1 to 4 are views showing a configuration of a door 12 to which the vehicle door structure 10 according to the first embodiment of the present invention is applied. In these drawings, the arrow Fr indicates the vehicle front-rear direction front side, the arrow Up indicates the vehicle vertical direction upper side, and the arrow In indicates the vehicle width direction inner side.

  As shown in FIG. 1, the door 12 to which the vehicle door structure 10 according to the first embodiment of the present invention is applied is configured as a front side door of a vehicle such as a passenger car, for example. The door 12 includes a door panel body 14 in the lower half of the door.

  The door panel body 14 includes a door inner panel 16 disposed on the inner side in the vehicle width direction and a door outer panel 18 disposed on the outer side in the vehicle width direction. The door inner panel 16 is divided into three parts in the vehicle front-rear direction, the hinge side panel 20 disposed on the vehicle front-rear direction front side, the inner center panel 22 disposed on the vehicle front-rear direction center side, and the vehicle front-rear direction rear side And the inner rear panel 24 disposed in the inner space.

  Of the door inner panel 16 divided into three parts, the hinge side panel 20 has a fixed portion 26 that is recessed inward in the vehicle width direction at the rear end in the vehicle front-rear direction, as shown in FIG. Is formed. Further, the inner rear panel 24 is formed with a fixing portion 28 that is recessed inward in the vehicle width direction at an end portion on the front side in the vehicle front-rear direction.

  End portions 30 on both sides in the vehicle front-rear direction of the inner center panel 22 are coupled to the fixing portion 26 of the hinge side panel 20 and the fixing portion 28 of the inner rear panel 24 from the outside in the vehicle width direction. Thereby, the door inner panel 16 is configured such that three panels are integrally coupled. Further, the door inner panel 16 and the door outer panel 18 in which the three panels are integrally coupled are coupled to each other at the outer peripheral edge 32 as shown in the cross-sectional views of FIGS. Has been.

  In addition, as shown in FIG. 2, the hinge side panel 20 of the door inner panel 16 includes a vehicle width direction wall portion 34 extending in the vehicle width direction, and the vehicle width direction wall portion 34 continuous with the vehicle width direction wall portion 34. A vehicle front-rear direction wall portion 36 extending in the direction is formed. Further, the inner panel 24 is formed with a vehicle width direction wall portion 38 extending in the vehicle width direction, and a vehicle front / rear direction wall portion 40 extending continuously in the vehicle front / rear direction following the vehicle width direction wall portion 38.

  The vehicle front-rear direction wall portions 36 and 40 are disposed on the door outer panel 18 side, that is, on the vehicle width direction outer side than the inner center panel 22 described above. Thereby, in the door panel body 14 configured by joining the door inner panel 16 and the door inner panel 16, the portions on both ends in the vehicle front-rear direction are door thicknesses than the portions on the center side in the vehicle front-rear direction. The width is narrow in the direction. In the present embodiment, a portion of the door panel body 14 on the rear side in the vehicle front-rear direction and on the lower side in the vehicle vertical direction (a portion surrounded by a two-dot chain line circle) is referred to as a door narrow portion 42.

  In the present embodiment, the door inner panel 16 and the door outer panel 18 in which the three panels are integrally joined are, for example, an aluminum alloy or a magnesium alloy from the viewpoint of reducing the weight of the entire vehicle and improving the fuel efficiency. Consists of light metals such as. Further, in the door inner panel 16, the hinge side panel 20 and the inner rear panel 24 are formed thicker than the door outer panel 18 and the inner center panel 22 as shown in FIG. 2.

  The hinge side panel 20 is provided with a hinge (not shown) at the front portion in the vehicle front-rear direction. This hinge is for rotatably supporting the door 12 on the vehicle body. Further, as shown in FIG. 1, the door panel body 14 is provided with a mirror bracket 48, a lock reinforcement 50, a belt line reinforcement 52, and an impact beam 54 in order to reinforce each part.

  The mirror bracket 48 is integrally coupled to the upper portion of the hinge side panel 20 in the vertical direction of the vehicle, and the lock reinforcement 50 is integrally coupled to the upper portion of the inner rear panel 24 in the vertical direction of the vehicle.

  Further, the belt line reinforcement 52 extends in the vehicle front-rear direction at a portion of the door panel body 14 on the upper side in the vehicle vertical direction, and both ends thereof are coupled to the hinge side panel 20 and the inner panel 24, respectively. Further, the impact beam 54 extends in the vehicle front-rear direction at a lower portion of the door panel body 14 in the vehicle vertical direction, and both end portions thereof extend to the hinge side panel 20 and the inner rear panel 24 via extensions 56 and 58, respectively. Are combined.

  More specifically, the rear end side of the impact beam 54 in the vehicle front-rear direction is coupled to a portion of the inner rear panel 24 on the rear side in the vehicle front-rear direction and the vehicle lower side in the vertical direction. Further, in the present embodiment, when the impact beam 54 is coupled to the door inner panel 16 as described above, the plate mating portion 60 between the inner center panel 22 and the inner rear panel 24 has the impact beam 54 in a vehicle side view. It is the structure which overlaps with.

  In the present embodiment, the mirror bracket 48, the lock reinforcement 50, the belt line reinforcement 52, and the impact beam 54 are made of, for example, steel. The mirror bracket 48, the lock reinforcement 50, the belt line reinforcement 52, and the impact beam 54 are preferably made of a material having a smaller linear expansion coefficient than the door outer panel 18 and the door inner panel 16 described above. Besides, for example, it may be made of titanium.

  Further, the door panel body 14 is provided with a door frame 62 for supporting glass as shown in FIG. The door frame 62 includes a front lower frame 64 at a lower portion on the front side in the vehicle front-rear direction and a rear lower frame 66 at a lower portion on the rear side in the vehicle front-rear direction. The lower end of the front lower frame 64 of the door frame 62 is fastened to the hinge side panel 20 by the fastener 68. The lower end of the rear lower frame 66 is fastened to the inner rear panel 24 by the fastener 70.

  Next, the operation and effect of the first embodiment of the present invention will be described.

  The door 12 configured as described above is processed, for example, as follows in the painting process in the manufacturing process. That is, the door 12 is subjected to an electrodeposition coating as a whole, and is then baked and dried in an electrodeposition coating baking and drying furnace close to about 200 ° C.

  At this time, the door inner panel 16 is made of a light metal having a large coefficient of thermal expansion, such as an aluminum alloy or a magnesium alloy, so that a thermal expansion force is generated in all directions and tries to expand. However, in general, the door inner panel 16 is formed with many concave or convex structural parts such as beads, seats for attachment parts, and joint surfaces. For this reason, the thermal expansion force which generate | occur | produced in the door inner panel 16 is disperse | distributed to these structure parts (namely, an expansion direction becomes complicated).

  On the other hand, the door outer panel 18 is made of a light metal having a large coefficient of thermal expansion such as an aluminum alloy or a magnesium alloy, as with the door inner panel 16, and is generally a single plate whose plane portion is mostly occupied. It is said that the structure. For this reason, the door outer panel 18 tends to thermally expand larger than the door inner panel 16 due to the thermal expansion force generated in all directions (difference is likely to occur in the thermal expansion mode).

  As a result, in general, the difference in thermal expansion between the door inner panel 16 and the door outer panel 18 is significant at the door width narrow portion 42 (particularly the corner portion) of the door panel body 14 in the vehicle longitudinal direction rear side and vehicle vertical direction lower side. Thus, the door outer panel 18 may be permanently deformed due to thermal strain.

  However, according to the vehicle door structure 10 according to the first embodiment of the present invention, the vehicle inner side of the door inner panel 16 on the rear side in the vehicle front-rear direction and the vehicle front-rear direction rear side located in the door narrow portion 42 and the vehicle vertical direction. An inner rear panel 24 including a lower portion is provided. The inner rear panel 24 is formed to be thicker than the inner center panel 22 (that is, as shown in FIG. 1, in the present embodiment, the inner rear panel 24 is disposed in the first region A1 according to the present invention. The inner center panel 22 corresponds to the second region A2 according to the present invention).

  Accordingly, even when the entire door 12 is placed in a high-temperature environment such as an electrodeposition paint baking and drying furnace, the door narrow portion 42 that easily deforms due to thermal expansion (this portion is a vehicle width direction surface: the result is small in thickness). And the thermal expansion rate of the rear part of the inner rear panel 24 located in the narrow door portion 42 in the vehicle front-rear direction and the lower part of the vehicle vertical direction can be kept low. In addition, since the inner rear panel 24 located on the narrow door portion 42 is thicker than the door outer panel 18 on the rear side in the vehicle front-rear direction and on the lower side in the vehicle vertical direction, the internal temperature rises more than the door outer panel 18. Slow and thermal expansion rate is low. Thereby, the thermal expansion of the door outer panel 18 in the door narrow width part 42 can be restrained and restrained by the inner rear panel 24. As a result, permanent deformation due to thermal strain of the door outer panel 18 in the narrow door portion 42 can be suppressed.

  Moreover, according to the vehicle door structure 10 according to the first embodiment of the present invention, the impact is applied to the rear portion in the vehicle front-rear direction and the lower portion in the vehicle vertical direction of the door inner panel 16 located in the door narrow portion 42. The rear side of the beam 54 in the vehicle front-rear direction is coupled. Therefore, even when the entire door 12 is placed in a high temperature environment such as an electrodeposition paint baking and drying furnace, the thermal expansion of the door outer panel 18 in the narrow door portion 42 is also restrained and suppressed by the impact beam 54. it can. Thereby, the permanent deformation by the thermal strain of the door outer panel 18 in the door narrow part 42 can be suppressed more.

  In particular, according to the vehicle door structure 10 according to the first embodiment of the present invention, the inner center panel 22 is divided and provided on the front side of the inner rear panel 24 in the vehicle front-rear direction. The inner center panel 22 is coupled with its end portions overlapped in the vehicle width direction.

  Therefore, the rigidity of the inner rear panel 24 can be increased by this connecting portion. Moreover, the inner rear panel 24 is coupled to the impact beam 54 at the rear side in the vehicle front-rear direction and the lower side in the vehicle vertical direction, and the impact beam 54 also increases the rigidity. Thereby, even when the entire door 12 is placed in a high temperature environment such as an electrodeposition paint baking and drying furnace, the rotational displacement of the inner rear panel 24 due to the thermal expansion force of the door outer panel 18 can be suppressed. As a result, the thermal expansion of the door outer panel 18 in the door narrow portion 42 can be further suppressed.

  Moreover, according to the vehicle door structure 10 according to the first embodiment of the present invention, the hinge side panel 20 provided with a hinge that is provided on the front side in the vehicle front-rear direction of the door inner panel 16 and that serves as a reference for building the vehicle body. The inner rear panel 24 provided on the rear side in the vehicle front-rear direction is connected by a beltline reinforcement 52, a door frame 62, and an impact beam 54.

  Therefore, even when the entire door 12 is placed in a high-temperature environment such as an electrodeposition paint baking and drying furnace, the belt inner reinforcement 52, the door frame 62, and the impact beam 54 are connected to the both ends in the longitudinal direction of the vehicle. The panel 16 can restrain and suppress the thermal expansion of the entire door outer panel 18.

  As described above, according to the vehicle door structure 10 according to the first embodiment of the present invention, even when the entire door 12 is placed in a high temperature environment such as an electrodeposition coating baking oven, the door 12 is permanently deformed. Can be suppressed. Thereby, for example, it is possible to improve the accuracy of building the door 12 on the vehicle body.

  In addition, according to the vehicle door structure 10 according to the first embodiment of the present invention, the inner disposed on the rear side in the vehicle front-rear direction of the door inner panel 16, that is, on the open end side (door 12 lock side) of the door 12. The rear panel 24 is formed thick. Therefore, the center of gravity of the door 12 can be moved to the open end side (door 12 lock side). Thereby, the closing property of the door 12 improves.

  Moreover, according to the vehicle door structure 10 according to the first embodiment of the present invention, the inner rear panel 24 that supports the impact beam 54 on the rear side in the vehicle front-rear direction is formed thick. Therefore, the rigidity of the inner rear panel 24 that supports the impact beam 54 can be increased. Thus, for example, as shown in FIG. 4, in the case of a side collision, the load F from the outside in the vehicle width direction is dispersed from the impact beam 54 in the vertical direction of the inner rear panel 24 toward the vehicle body (for example, the B pillar 76). Since it can transmit, load transmission efficiency can be improved.

  Moreover, according to the vehicle door structure 10 according to the first embodiment of the present invention, the plate thickness of the hinge side panel 20 that supports the impact beam 54 on the front side in the vehicle front-rear direction is also thick. Therefore, for example, during a side collision, the load from the outside in the vehicle width direction can be distributed from the impact beam 54 to the vertical direction of the hinge side panel 20.

  Moreover, according to the vehicle door structure 10 according to the first embodiment of the present invention, the door inner panel 16 is divided into the hinge side panel 20, the inner center panel 22, and the inner rear panel 24, thereby forming each panel. It becomes easy to do. Thereby, the moldability of the door inner panel 16 can be improved.

  Further, according to the vehicle door structure 10 according to the first embodiment of the present invention, as shown in FIG. 2, the inner center panel 22 is fixed to the fixing portion 26 of the hinge side panel 20 and the fixing portion 28 of the inner rear panel 24. The end portions 30 on both sides in the vehicle front-rear direction are joined from the outside in the vehicle width direction. Therefore, even when the window regulator 74 is attached to the inner center panel 22, for example, the hinge side panel 20 and the inner rear panel 24 receive the inertial force that acts on the inner center panel 22 in the vehicle width direction when the door 12 is closed. Can do. Thereby, the inner center panel 22 is prevented from being peeled off from the hinge side panel 20 and the inner rear panel 24, and the durability of the door 12 can be improved.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS.

  5 and 6 are views showing the configuration of the door 12 to which the vehicle door structure 110 according to the second embodiment of the present invention is applied. In these drawings, the arrow Fr indicates the vehicle front-rear direction front side, the arrow Up indicates the vehicle vertical direction upper side, and the arrow In indicates the vehicle width direction inner side.

  The vehicle door structure 110 according to the second embodiment of the present invention is obtained by changing the points described below from the vehicle door structure 10 according to the first embodiment of the present invention described above.

  That is, in the door 12 to which the vehicle door structure 110 according to the second embodiment of the present invention is applied, the inner rear panel 24 provided on the rear side in the vehicle front-rear direction of the door inner panel 16 is divided into two in the vehicle vertical direction. The upper panel 112 is arranged on the upper side in the vehicle vertical direction, and the lower panel 114 is arranged on the lower side in the vehicle vertical direction.

  Of the inner panel 24 divided into two, the upper panel 112 is formed with a fixing portion 116 that is recessed inward in the vehicle width direction at the lower end of the vehicle in the vehicle vertical direction, as shown in FIG. ing. An end 118 on the upper side in the vehicle vertical direction of the lower panel 114 is coupled to the fixed portion 116 of the upper panel 112 from the outside in the vehicle width direction. Thereby, the inner rear panel 24 is configured such that two panels are integrally coupled.

  Further, in the present embodiment, of the inner panel 24, the lower panel 114 is formed thicker than the upper panel 112 as shown in FIG. 6, and the door outer panel 18 shown in FIG. And the plate thickness is formed thicker than the inner center panel 22.

  Further, after the inner rear panel 24, the rear side in the vehicle front-rear direction of the beltline reinforcement 52 is coupled to the upper panel 112 as shown in FIG. Further, the lock reinforcement 50 is integrally coupled to the upper panel 112.

  Further, a lower end portion of the lock reinforcement 50 is connected to a connecting portion between the upper panel 112 and the lower panel 114, and a lower end portion of a rear lower frame 66 provided on the door frame 62 is a fastener. 70 is fastened.

  Further, the rear end side of the impact beam 54 in the vehicle front-rear direction is coupled to the lower panel 114 of the inner rear panel 24 via an extension 58. At this time, more specifically, the impact beam 54 is coupled to a rear side in the vehicle front-rear direction and a lower side in the vehicle vertical direction, which are located in the narrow door portion 42 of the lower panel 114.

  Next, the operation and effect of the second embodiment of the present invention will be described.

  According to the vehicle door structure 110 according to the second embodiment of the present invention, on the rear side in the vehicle front-rear direction of the door inner panel 16, the rear side in the vehicle front-rear direction and the lower side in the vehicle vertical direction located at the door narrow portion 42. A lower panel 114 including these parts is provided. The lower panel 114 is formed to be thicker than the inner center panel 22 and the upper panel 112 (that is, as shown in FIG. 5, in this embodiment, the lower panel 114 is the first panel according to the present invention). The inner center panel 22 and the upper panel 112 correspond to the second region A2 according to the present invention).

  Accordingly, even when the entire door 12 is placed in a high-temperature environment such as an electrodeposition paint baking and drying furnace, the door narrow portion 42 that easily deforms due to thermal expansion (this portion is a vehicle width direction surface: the result is small in thickness). And the thermal expansion rate of the lower part of the lower panel 114 located in the narrow door portion 42 in the vehicle longitudinal direction rear side and the vehicle vertical direction lower side can be kept low. In addition, since the portion of the lower panel 114 located on the narrow door portion 42 on the rear side in the vehicle front-rear direction and on the lower side in the vehicle vertical direction is thicker than the door outer panel 18, the internal temperature rises more than the door outer panel 18. Slow and thermal expansion rate is low. Thereby, the thermal expansion of the door outer panel 18 in the narrow door portion 42 can be restrained and suppressed by the lower panel 114. As a result, permanent deformation due to thermal strain of the door outer panel 18 in the narrow door portion 42 can be suppressed.

  Further, according to the vehicle door structure 110 according to the second embodiment of the present invention, the impact beam is formed on the rear side of the lower panel 114 located in the narrow door portion 42 in the vehicle longitudinal direction rear side and the vehicle vertical direction lower side. The rear side of 54 of the vehicle front-back direction is couple | bonded. Therefore, even when the entire door 12 is placed in a high temperature environment such as an electrodeposition paint baking and drying furnace, the thermal expansion of the door outer panel 18 in the narrow door portion 42 is also restrained and suppressed by the impact beam 54. it can. Thereby, the permanent deformation by the thermal strain of the door outer panel 18 in the door narrow part 42 can be suppressed more.

  In particular, according to the vehicle door structure 110 according to the second embodiment of the present invention, the inner center panel 22 is divided and provided on the front side of the lower panel 114 in the vehicle front-rear direction. The inner center panel 22 is coupled with its end portions overlapped in the vehicle width direction.

  Therefore, the rigidity of the lower panel 114 can be increased by this connecting portion. In addition, the lower panel 114 is coupled to the impact beam 54 at the rear side in the vehicle front-rear direction and the lower side in the vehicle vertical direction, and the impact beam 54 also increases the rigidity. Thereby, even when the entire door 12 is placed in a high temperature environment such as an electrodeposition paint baking and drying furnace, the rotational displacement of the lower panel 114 due to the thermal expansion force of the door outer panel 18 can be suppressed. As a result, the thermal expansion of the door outer panel 18 in the door narrow portion 42 can be further suppressed.

  Moreover, according to the vehicle door structure 110 according to the second embodiment of the present invention, the hinge side panel 20 provided with the hinge that is provided on the front side in the vehicle front-rear direction of the door inner panel 16 and that serves as a reference for building the vehicle body. The inner rear panel 24 provided on the rear side in the vehicle front-rear direction is connected by a beltline reinforcement 52, a door frame 62, and a door 12 impact beam 54.

  Therefore, even when the entire door 12 is placed in a high-temperature environment such as an electrodeposition paint baking and drying furnace, the belt inner reinforcement 52, the door frame 62, and the impact beam 54 are connected to the both ends in the longitudinal direction of the vehicle. The panel 16 can restrain and suppress the thermal expansion of the entire door outer panel 18.

  Moreover, according to the vehicle door structure 110 according to the second embodiment of the present invention, the lock reinforcement 50 is coupled to the upper panel 112. Therefore, even when the entire door 12 is placed in a high temperature environment such as an electrodeposition paint baking and drying furnace, the thermal expansion rate of the upper panel 112 can be kept low by restraining with the lock reinforcement 50.

  Further, according to the vehicle door structure 110 according to the second embodiment of the present invention, the lower panel 114 is formed thicker than the upper panel 112. Accordingly, the lower panel 114 has a lower heat transfer rate than the upper panel 112. Thereby, it is possible to match the thermal expansion rates of the upper panel 112 and the lower panel 114, which are restrained by the lock reinforcement 50, so that the thermal expansion rate is kept low (that is, the thermal expansion rate can be kept low for both panels). . And the thermal expansion of the door outer panel 18 can be restrained and suppressed by the lower panel 114 and the upper panel 112 in which the thermal expansion rate is kept low.

  Moreover, according to the vehicle door structure 110 according to the second embodiment of the present invention, the plate thickness of the upper panel 112 may be thin. Therefore, the mass of the door inner panel 16 and by extension the door 12 can be reduced.

  Moreover, according to the vehicle door structure 110 according to the second embodiment of the present invention, the upper panel 112 and the lower panel 114 described above are joined with their end portions overlapped in the vehicle width direction. The lower ends of the lock reinforcement 50 and the rear lower frame 66 are joined to the joint between the upper panel 112 and the lower panel 114.

  Therefore, the thermal expansion directions of the upper panel 112 and the lower panel 114 can be matched. Thereby, the thermal expansion of the door outer panel 18 can be reliably restrained and suppressed by the upper panel 112 and the lower panel 114.

  Further, according to the vehicle door structure 110 according to the second embodiment of the present invention, the inner rear panel 24 including the lower panel 114 described above is located behind the vehicle front-rear direction center of the door inner panel 16. (One end side). Accordingly, the area of the lower panel 114 having a large plate thickness can be reduced, and the mass of the door inner panel 16 and thus the entire door 12 can be further reduced.

  In the vehicle door structure 110 according to the second embodiment of the present invention, the lower end portion of the rear lower frame 66 is coupled to the coupling portion between the upper panel 112 and the lower panel 114. Therefore, the rigidity of the door frame 62 as a whole can be improved, whereby the door frame 62 and the glass building accuracy can be improved.

[Third embodiment]
Next, a third embodiment of the present invention will be described with reference to FIGS.

  FIGS. 7 to 10 are views showing the configuration of the door 212 to which the vehicle door structure 210 according to the third embodiment of the present invention is applied. In these drawings, the arrow Fr indicates the vehicle front-rear direction front side, the arrow Up indicates the vehicle vertical direction upper side, and the arrow In indicates the vehicle width direction inner side.

  The vehicle door structure 210 according to the third embodiment of the present invention is obtained by changing the following points from the vehicle door structure 10 according to the first embodiment of the present invention described above.

  That is, in the door 212 to which the vehicle door structure 210 according to the third embodiment of the present invention is applied, the door inner panel 16 is divided into two in the vehicle front-rear direction, and the hinge side disposed on the vehicle front-rear direction front side. It is comprised by the panel 20 and the main body panel 212 arrange | positioned at the vehicle front-back direction rear side of this hinge side panel 20. As shown in FIG.

  Of the door inner panel 16 that is divided into two, the hinge side panel 20 has a fixing portion 214 that is recessed inward in the vehicle width direction at the rear end in the vehicle longitudinal direction, as shown in FIG. Is formed. An end 216 on the front side in the vehicle front-rear direction of the main body panel 212 is coupled to the fixing portion 214 of the hinge side panel 20 from the outside in the vehicle width direction.

  Further, as shown in FIG. 7, the main body panel 212 coupled to the hinge side panel 20 in this way is divided into two in the vehicle vertical direction, and the upper panel 218 disposed on the vehicle vertical direction upper side, It is comprised by the lower panel 220 arrange | positioned at the vehicle up-down direction lower side.

  As shown in FIG. 9, of the two-divided main body panel 212, the upper panel 218 is formed with a fixing portion 222 that is recessed inward in the vehicle width direction at the lower end in the vehicle vertical direction. ing. An end 224 on the upper side in the vehicle vertical direction of the lower panel 220 is coupled to the fixing portion 222 of the upper panel 218 from the outside in the vehicle width direction. Thereby, the main body panel 212 is configured such that two panels are integrally coupled. Further, the door inner panel 16 is integrally formed by coupling the hinge side panel 20 to the main body panel 212 as described above.

  Further, in the present embodiment, the lower panel 220 of the main body panel 212 is formed to be thicker than the upper panel 218 as shown in FIG. 9, and the door outer panel 18 shown in FIG. The plate thickness is formed thicker than that.

  Further, as shown in FIG. 7, after the main body panel 212, the rear side of the lock reinforcement 50 in the vehicle front-rear direction is coupled to the rear side of the vehicle front-rear direction. In addition, a lock reinforcement 50 is integrally coupled to the upper panel 218 at a rear portion in the vehicle front-rear direction.

  Further, a lower end portion of the above-described lock reinforcement 50 is connected to a connecting portion between the upper panel 218 and the lower panel 220, and a lower end portion of a rear lower frame 66 provided on the door frame 62 is a fastener. 70 is fastened.

  In addition, the rear end side of the impact beam 54 in the vehicle front-rear direction is coupled to the lower panel 220 of the main body panel 212 via the extension 58. At this time, more specifically, the impact beam 54 is coupled to a portion of the lower panel 220 on the rear side in the vehicle front-rear direction and the lower side in the vehicle vertical direction, which is located in the door narrow portion 42.

  Next, the operation and effect of the third embodiment of the present invention will be described.

  According to the vehicle door structure 210 according to the third embodiment of the present invention, on the vehicle longitudinal direction rear side of the door inner panel 16, the vehicle longitudinal direction rear side and the vehicle vertical direction lower side located at the door narrow portion 42. A lower panel 220 including these parts is provided. The lower panel 220 is formed thicker than the upper panel 218 (that is, as shown in FIG. 7, in this embodiment, the lower panel 220 corresponds to the first region A1 according to the present invention). The upper panel 218 corresponds to the second region A2 according to the present invention).

  Accordingly, even when the entire door 12 is placed in a high-temperature environment such as an electrodeposition paint baking and drying furnace, the door narrow portion 42 that easily deforms due to thermal expansion (this portion is a vehicle width direction surface: the result is small in thickness). And the thermal expansion speed of the lower part of the lower panel 220 located in the narrow door portion 42 in the vehicle longitudinal direction rear side and the vehicle vertical direction lower side can be kept low. In addition, the portion of the lower panel 220 located at the narrow door portion 42 on the rear side in the vehicle front-rear direction and on the lower side in the vehicle vertical direction is thicker than the door outer panel 18, so that the internal temperature rises more than the door outer panel 18. Slow and thermal expansion rate is low. Thereby, the thermal expansion of the door outer panel 18 in the door narrow portion 42 can be restrained and suppressed by the lower panel 220. As a result, permanent deformation due to thermal strain of the door outer panel 18 in the narrow door portion 42 can be suppressed.

  Further, according to the vehicle door structure 210 according to the third embodiment of the present invention, the impact beam is formed on the rear side of the lower panel 220 located in the narrow door portion 42 in the vehicle longitudinal direction rear side and the vehicle vertical direction lower side. The rear side of 54 of the vehicle front-back direction is couple | bonded. Therefore, even when the entire door 12 is placed in a high temperature environment such as an electrodeposition paint baking and drying furnace, the thermal expansion of the door outer panel 18 in the narrow door portion 42 is also restrained and suppressed by the impact beam 54. it can. Thereby, the permanent deformation by the thermal strain of the door outer panel 18 in the door narrow part 42 can be suppressed more.

  In particular, according to the vehicle door structure 210 according to the third embodiment of the present invention, the lower panel 220 is coupled to the impact beam 54 at the rear side in the vehicle longitudinal direction and the lower side in the vehicle vertical direction. The impact beam 54 increases the rigidity. Thereby, even when the entire door 12 is placed in a high temperature environment such as an electrodeposition paint baking and drying furnace, the rotational displacement of the lower panel 220 due to the thermal expansion force of the door outer panel 18 can be suppressed. As a result, the thermal expansion of the door outer panel 18 in the door narrow portion 42 can be further suppressed.

  In addition, according to the vehicle door structure 210 according to the third embodiment of the present invention, the hinge side panel 20 provided with a hinge that is provided on the front side in the vehicle front-rear direction of the door inner panel 16 and that serves as a reference for building the vehicle body. The inner rear panel 24 provided on the rear side in the vehicle front-rear direction is connected by a beltline reinforcement 52, a door frame 62, and an impact beam 54.

  Therefore, even when the entire door 12 is placed in a high-temperature environment such as an electrodeposition paint baking and drying furnace, the belt inner reinforcement 52, the door frame 62, and the impact beam 54 are connected to the both ends in the longitudinal direction of the vehicle. The panel 16 can restrain and suppress the thermal expansion of the entire door outer panel 18.

  In the vehicle door structure 210 according to the third embodiment of the present invention, the lock reinforcement 50 is coupled to the upper panel 218. Therefore, even when the entire door 12 is placed in a high temperature environment such as an electrodeposition paint baking and drying furnace, the thermal expansion rate of the upper panel 218 can be kept low by restraining with the lock reinforcement 50.

  Further, according to the vehicle door structure 210 according to the third embodiment of the present invention, the lower panel 220 is formed thicker than the upper panel 218. Accordingly, the lower panel 220 has a lower heat transfer rate than the upper panel 218. Thereby, it is possible to match the thermal expansion rates of the upper panel 218 and the lower panel 220, which are restrained by the lock reinforcement 50, so that the thermal expansion rate is kept low (that is, the thermal expansion rate can be kept low for both panels). . And the thermal expansion of the door outer panel 18 can be restrained and restrained by the lower panel 220 and the upper panel 218 whose thermal expansion rate is kept low.

  Moreover, according to the vehicle door structure 210 according to the third embodiment of the present invention, the plate thickness of the upper panel 218 may be thin. Therefore, the mass of the door inner panel 16 and by extension the door 12 can be reduced.

  Further, according to the vehicle door structure 210 according to the third embodiment of the present invention, the upper panel 218 and the lower panel 220 described above are joined with their end portions overlapped in the vehicle width direction, and The lower ends of the lock reinforcement 50 and the rear lower frame 66 are joined to the joint between the upper panel 218 and the lower panel 220.

  Therefore, the thermal expansion directions of the upper panel 218 and the lower panel 220 can be matched. Thereby, the thermal expansion of the door outer panel 18 can be reliably restrained and suppressed by the upper panel 218 and the lower panel 220.

  In addition, according to the vehicle door structure 210 according to the third embodiment of the present invention, the lower panel 220 is formed thick. Therefore, as shown in FIG. 10, for example, in the case of a side collision, the load F from the outside in the vehicle width direction can be distributed from the impact beam 54 to the vehicle body (the rocker portion 226) via the lower panel 220. It can be improved.

  Further, according to the vehicle door structure 210 according to the third embodiment of the present invention, the lower end portion of the rear lower frame 66 is coupled to the coupling portion between the upper panel 218 and the lower panel 220. Therefore, the rigidity of the door frame 62 as a whole can be improved, whereby the door frame 62 and the glass building accuracy can be improved.

It is a side view of the door to which the door structure for vehicles concerning a first embodiment of the present invention was applied. FIG. 2 is a sectional view taken along line 2-2 of FIG. FIG. 3 is a sectional view taken along line 3-3 in FIG. 1. It is explanatory drawing which shows the state where the side impact load acted on the door to which the vehicle door structure which concerns on 1st embodiment of this invention was applied. It is a side view of the door to which the vehicle door structure which concerns on 2nd embodiment of this invention was applied. It is sectional drawing of the inner rear panel provided in the door to which the vehicle door structure which concerns on 2nd embodiment of this invention was applied. It is a side view of the door to which the vehicle door structure which concerns on 3rd embodiment of this invention was applied. FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 7. It is sectional drawing of the main body panel provided in the door to which the vehicle door structure which concerns on 3rd embodiment of this invention was applied. It is explanatory drawing which shows the state in which the side impact load acted on the door to which the vehicle door structure which concerns on 3rd embodiment of this invention was applied.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10, 110, 210 Vehicle door structure 16 Door inner panel 18 Door outer panel 20 Hinge side panel 22 Inner center panel (door width direction other end side panel part)
24 Inner rear panel (panel width one end side panel)
32 Outer peripheral edge portions 36, 40 Vehicle front-rear direction wall portion 42 Door narrow portion 50 Lock reinforcement (panel reinforcing member)
54 Impact beam (door reinforcement member)
66 Rear lower frame (panel reinforcement member)
112,218 Upper panel (panel height direction other end side panel part)
114,220 Lower panel (door height direction one side panel)

Claims (5)

Door outer panel,
The door outer panel is disposed so as to face the door thickness direction, and is combined with the door outer panel at the outer peripheral edge portion, and the door width direction one end side and the door height direction one end side are the door width direction center. A portion that is disposed on the door outer panel side with respect to the side portion and includes at least a portion on one end side in the door width direction and one end side in the door height direction is defined as a first region, and a portion different from the first region is defined as a second region. In that case, the door inner panel in which the first region is formed thicker than the second region,
A door reinforcing member having one end side coupled to a portion on one end side in the door width direction and one end side in the door height direction of the door inner panel, and the other end side coupled to a portion on the other end side in the door width direction of the door inner panel; ,
A vehicle door structure characterized by comprising: The door inner panel is
A door width direction one end side panel portion that constitutes at least a part of the first region, is disposed on one end side in the door width direction, and includes at least a portion on one end side in the door width direction and one end side in the door height direction;
It constitutes at least a part of the second region, is arranged on the other end side in the door width direction, is provided separately from the one end side panel portion in the door width direction, and the one end side panel portion in the door width direction The other end side panel portion in the door width direction in which the ends of each other are overlapped and joined in the door thickness direction,
The vehicle door structure according to claim 1, comprising: The door inner panel is
The door height direction one end side panel part which comprises at least one part of said 1st area | region, and is arrange | positioned at the door height direction one end side and contains the said door width direction one end side and the door height direction one end side at least. When,
It constitutes at least a part of the second region, is disposed on the other end side in the door height direction, is provided separately from the panel portion on the one end side in the door height direction, and a panel reinforcing member is coupled A door height direction other end side panel,
The vehicle door structure according to claim 1, wherein the vehicle door structure is provided. The door height direction one end side panel portion and the door height direction other end side panel portion are combined with each other overlapping the door thickness direction,
The vehicle door according to claim 3, wherein the panel reinforcing member is coupled to a coupling portion between the door height direction one end side panel portion and the door height direction other end side panel portion. Construction.   The said door height direction one end side panel part and the said door height direction other end side panel part are arrange | positioned in the door width direction one end side rather than the door width direction center part of the said door inner panel, It is characterized by the above-mentioned. The vehicle door structure according to claim 3 or claim 4.

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