JP2008074205A - Vehicular door structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress the permanent deformation of a door, in a vehicular door structure equipped with a door outer panel and a door inner panel, and wherein the door outer panel and the door inner panel are united at outer peripheral edge portions. <P>SOLUTION: In the vehicular door structure 10, to a belt line structure 20 of the door inner panel 16, a belt line reinforcing portion 42 of a belt line inner 32 constituted by material having a line expansion coefficient smaller than the door outer panel 14 is united. To a door frame structure 22 of the door inner panel 16, a door frame reinforcing portion 44 of the belt line inner 32 is united. The belt line structure 20 and the belt line reinforcing portion 42, and the door frame structure 22 and the belt line reinforcing portion 42 successively form closed cross sectional surfaces 66, 70 from a belt line portion BL to a door frame portion FR of a door 12. Therefore, even if the whole of the door 12 is under a high temperature environment such as an electrodeposition coating and baking drying furnace, the thermal expansion of the door outer panel 14 can be certainly restricted and suppressed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle door structure, and more particularly, to a vehicle door structure that includes a door outer panel and a door inner panel, and the door outer panel and the door inner panel are coupled to each other at their outer peripheral edges. .

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

  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 an electrodeposition coating baking oven. If this happens, the entire door will thermally expand. 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 constituting 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-mentioned problem, the vehicle door structure according to claim 1 includes a door outer panel extending in a door width direction, a belt line portion of the door, and the door outer panel in the door thickness direction. A belt line component that is opposed and extends in the door width direction and joined to the door outer panel at both ends in the door width direction, and integrally formed on one side of the belt line component in the door height direction A door inner panel configured to have a frame-shaped door frame configuration part for configuring a door frame part that supports the window glass of the door, and a material having a smaller linear expansion coefficient than the door outer panel. A belt line reinforcing portion configured to extend in the door width direction and coupled to the belt line constituting portion at least at both ends in the door width direction; and the belt line It is strong portion and integrally formed, characterized in that and a door reinforcement member, which is configured with a frame-shaped door frame reinforcing portion, which is coupled to the door frame component.

  In the present invention, the door width direction corresponds to, for example, the vehicle front-rear direction when the vehicle door structure is applied to a side door of a vehicle, and the vehicle door structure is applied to a vehicle rear door. If this is the case, 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. Further, 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.

  According to the vehicle door structure of the first aspect, the belt line constituting portion of the door inner panel is coupled to the door outer panel at both ends in the door width direction, and both ends of the belt line constituting portion in the door width direction are connected. The door width direction both ends of the belt line reinforcement part provided in the door reinforcement member which consists of a material with a smaller linear expansion coefficient than a door outer panel are couple | bonded with the side. Further, a door frame reinforcing portion formed integrally with the belt line reinforcing portion of the door reinforcing member is coupled to the door frame forming portion integrally formed with the belt line forming portion of the door inner panel. Therefore, even when the entire door is placed in a high temperature environment such as an electrodeposition paint baking and drying furnace, the door inner panel belt line configuration in which the thermal expansion in the door width direction of the door outer panel is reinforced by the door reinforcing member. It can restrain and restrain by the high-rigidity part applied to the door frame structure part from the part. As a result, permanent deformation due to thermal strain of the door outer panel can be suppressed.

  In addition, according to the vehicle door structure of the first aspect, as described above, the belt inner part of the door inner panel and the door frame constituent part are made of a material having a smaller linear expansion coefficient than that of the door outer panel. It is set as the highly rigid part reinforced with the door reinforcement member. Therefore, even when the door is placed in a low temperature environment, for example, deformation from the belt line portion of the door to the door frame portion (particularly, deformation of the upper frame portion of the door frame portion in the door thickness direction) can be suppressed.

  The vehicle door structure according to claim 2 is the vehicle door structure according to claim 1, wherein a belt line closing section is formed in the belt line portion of the door by the belt line constituting portion and the belt line reinforcing portion. A door frame closing section is formed in the door frame portion of the door by the door frame constituting section and the belt line reinforcing section, and the belt line closing section and the door frame closing section are continuously formed. It is characterized by being.

  According to the vehicle door structure of claim 2, a closed cross section is formed from the belt line portion of the door to the door frame portion by the belt line constituting portion and the belt line reinforcing portion, and the door frame constituting portion and the belt line reinforcing portion. It is formed continuously. Therefore, the rigidity of the high-rigidity part applied from the beltline constituent part of the door inner panel to the door frame constituent part can be further increased. As a result, the binding force against the thermal expansion of the door outer panel is further strengthened, so that permanent deformation due to thermal distortion of the door outer panel can be further suppressed, and deformation from the belt line part of the door to the door frame part (particularly the door frame part) The deformation of the upper frame portion in the door thickness direction can be further suppressed.

  A vehicle door structure according to a third aspect is the vehicle door structure according to the first or second aspect, wherein the vehicle door structure is made of a material that extends in the door width direction and has a smaller linear expansion coefficient than the door outer panel. In addition, the present invention is characterized in that the door width direction both ends are provided with connecting members respectively connected to the door width direction both ends of the door inner panel.

  According to the vehicle door structure of the third aspect, the door width direction both ends of the connecting member extending in the door width direction are coupled to the door width direction both ends of the door inner panel. The connecting member is made of a material having a smaller linear expansion coefficient than the door outer panel. Therefore, this connecting member can further increase the restraining force against the thermal expansion of the door outer panel by the door inner panel. Thereby, permanent deformation due to thermal strain of the door outer panel can be further suppressed.

  The vehicle door structure according to claim 4 is the vehicle door structure according to any one of claims 1 to 3, wherein the door inner panel includes the belt line component and the door frame component. A first door inner panel body made of a material having a smaller coefficient of linear expansion than the door outer panel, and the door frame constituting portion of the first door inner panel body and the door height direction. And a second door inner panel body disposed on the opposite side.

  According to the vehicle door structure described in claim 4, the door outer panel and the door inner panel in which both ends in the door width direction are coupled to each other include the belt line component and the door frame component. The door inner panel body is made of a material having a smaller linear expansion coefficient than the door outer panel. Therefore, the restraining force with respect to the thermal expansion of the door outer panel by the door inner panel can be further increased.

  The vehicle door structure according to claim 5 is the vehicle door structure according to any one of claims 1 to 4, wherein the door inner panel is provided with a cutout portion in part, The cutout portion is characterized in that the functional parts are integrally fixed and closed by a closing wall portion having a modular structure.

  According to the vehicle door structure of the fifth aspect, the door inner panel is provided with a cutout portion in part. The blocking wall portion that closes the cutout portion has a module structure in which functional parts are integrally fixed. Therefore, in the door assembly process, for example, it is possible to obtain a work procedure in which the blocking wall portion is formed into a module structure in which functional parts are integrally fixed and then assembled to the peripheral portion of the cutout portion. For this reason, it is possible to eliminate work holes for attaching functional parts to the door inner panel. Thereby, the rigidity of a door inner panel can be improved and the restraint force with respect to the thermal expansion of the door outer panel by a door inner panel can be ensured.

  The vehicle door structure according to claim 6 is the vehicle door structure according to any one of claims 1 to 3, wherein the door inner panel includes the belt line component and the door frame component. A first door inner panel body configured to include a second door inner panel body disposed on the opposite side of the door frame configuration portion and the door height direction of the first door inner panel body, The first door inner panel body and the second door inner panel body each have a functional structure integrally fixed to form a modular structure, and the door outer panel is coupled to the first door inner panel body. A door outer panel body and a second door outer panel body coupled to the second door inner panel body are provided.

  According to the vehicle door structure of claim 6, the first door inner panel body and the second door inner panel body of the door inner panel have a modular structure in which functional parts are integrally fixed, The door outer panel is divided into a first door outer panel body and a second door outer panel body that are respectively coupled to the first door inner panel body and the second door inner panel body. Accordingly, in the door assembly process, for example, the first door inner panel body and the second door inner panel body are made into a module structure in which functional parts are integrally fixed, The first door outer panel body and the second door outer panel body are respectively coupled to the two-door inner panel body, and then the first door inner panel body and the second door inner panel body are coupled, and the first door outer panel body and The work procedure of joining the second door outer panel body can be obtained. For this reason, the work hole for attachment of the functional components etc. which were provided in the 1st door inner panel body and the 2nd door inner panel body can be abolished. Thereby, the rigidity of the door inner panel which consists of a 1st door inner panel body and a 2nd door inner panel body can be improved, and the restraint force with respect to the thermal expansion of the door outer panel by a door inner panel can be raised more.

  The vehicle door structure according to claim 7 is the vehicle door structure according to claim 6, wherein the first door outer panel body and the second door outer panel body are coupled to each other in the door height direction. And a deformation absorbing portion capable of absorbing at least one of thermal expansion and thermal contraction in the door height direction on each side.

  According to the vehicle door structure described in claim 7, the first door outer panel body and the second door outer panel body described above are coupled to each other in the door height direction. Is provided with a deformation absorbing portion capable of absorbing at least one of thermal expansion and thermal contraction in the door height direction. Accordingly, even if the entire door outer panel is subjected to thermal expansion or thermal contraction in the door height direction due to, for example, electrodeposition coating baking treatment, at least one of the thermal expansion and thermal contraction is caused by the deformation absorbing portion. It can suppress by absorbing. Thereby, the permanent deformation by the thermal strain of a door outer panel (especially general panel surface) can be suppressed.

  The vehicle door structure according to claim 8 is the vehicle door structure according to any one of claims 1 to 3, wherein the door inner panel includes the belt line component and the door frame component. A first door inner panel body configured to include the door frame component of the first door inner panel body and a second door inner panel body disposed on the opposite side of the door height direction. A door outer module formed by combining the second door inner panel body and the door outer panel at the outer peripheral edge of each other, and the first door inner panel body and the door reinforcing member. A door inner module that is combined with each other at both ends in the door width direction and modularized, and that is combined with the second door inner panel at least at both ends in the door width direction. The first door inner panel body and the second door inner are made of a material having a smaller linear expansion coefficient than the door outer panel, and are arranged in the belt line portion of the door and extend in the door width direction. A belt line reinforcing member coupled to at least one of the panel bodies and both ends of the door width direction is provided.

  According to the vehicle door structure of the eighth aspect, the second door inner panel body and the door outer panel are coupled to each other at the outer peripheral edge portion to constitute the door outer module, and the first door inner panel body And the door reinforcing member are integrally combined in advance to form a door inner module. In addition, at least one of the door outer module and the door inner module is configured to include a belt line reinforcing member disposed in the belt line portion of the door.

  That is, when the beltline reinforcing member is included in the door outer module, the beltline reinforcing member is coupled to the second door inner panel body at both ends in the door width direction, and when included in the door inner module, It is combined with the door inner panel body at both ends in the door width direction. In addition, when the beltline reinforcing member is included in both the door outer module and the door inner module, the beltline reinforcing member included in the door outer module is the second door inner panel body and the mutual door width. The beltline reinforcing members coupled to both ends in the direction and included in the door inner module are coupled to the first door inner panel body at both ends in the door width direction.

  The door inner module and the door inner module are integrated with each other as a door by coupling the door inner module with the second door inner panel provided on the door outer module at least at both ends in the door width direction. It is assembled.

  Here, as described above, when the door outer module and the door inner module are integrally assembled as a door, the door inner panel constituted by the first door inner panel body and the second door inner panel body described above is used. The door width direction both ends of the belt line reinforcing member made of a material having a smaller linear expansion coefficient than the door outer panel described above are coupled to both ends in the door width direction. Therefore, even when the entire door is placed in a high temperature environment or a low temperature environment, for example, the thermal expansion or contraction in the door width direction of the door outer panel is restrained and restrained by the belt line reinforcing member and the door inner panel. Can do. Thereby, the permanent deformation by the thermal strain of a door outer panel can be suppressed.

  In particular, according to the vehicle door structure of the eighth aspect, as described above, the door is divided into the door outer module and the door inner module. Therefore, in the door assembly process, the door outer module and the door inner module are modularized in advance, and the work procedure of configuring the entire door by assembling the door outer module and the door inner module can be obtained. .

  For this reason, it is not necessary to provide a work hole for attaching, for example, a fitting in the first door inner panel body and the second door inner panel body (or the work hole can be reduced). Thereby, the contraction direction of the door inner panel constituted by the first door inner panel body and the second door inner panel body can be made uniform, and the rigidity thereof can be improved. As a result, it is possible to further increase the restraining force against thermal contraction of the door outer panel in the door width direction by the door inner panel.

  In addition, according to the vehicle door structure of the eighth aspect, as described above, the belt line reinforcing member and the door inner panel restrain and restrain the thermal contraction of the door outer panel in the door width direction. A decrease in the opening width in the door width direction of the formed door frame portion can also be suppressed.

  The vehicle door structure according to claim 9 is the vehicle door structure according to claim 8, and includes a frame-shaped door frame arranged in the door frame portion of the door and extending in the door width direction, The door frame, the first door inner panel body, and the second door inner panel body are fastened together by a common fastener.

  According to the vehicle door structure of the ninth aspect, the door frame, the first door inner panel body, and the second door inner panel body are fastened together by a common fastener. Here, at least one of the first door inner panel body and the second door inner panel body is coupled with a beltline reinforcing member at both ends in the door width direction. Therefore, even when the entire door is placed in a low-temperature environment and a thermal contraction force in the door width direction is applied to the door outer panel, it is combined with at least one of the first door inner panel body and the second door inner panel body. The beltline reinforcing member can directly restrain and suppress the deformation of the door frame in the door width direction. Thereby, the reduction | decrease of the opening width of the door width direction of the door frame part comprised and provided with the door frame can be suppressed more.

  The vehicle door structure according to claim 10 is the vehicle door structure according to claim 8 or 9, wherein at least one of the door inner module and the door outer module includes a functional component, and the functional component The first door inner panel body and the second door inner panel body are fastened together by a common fastener.

  According to the vehicle door structure of the tenth aspect, the functional component, the first door inner panel body, and the second door inner panel body are fastened together by a common fastener. Here, at least one of the first door inner panel body and the second door inner panel body is coupled with a beltline reinforcing member at both ends in the door width direction. Therefore, even when the entire door is placed in a low-temperature environment and the heat contraction force in the door width direction acts on the door outer panel, the first door inner panel body or the second door inner to which the beltline reinforcing member is coupled. The positional displacement of the functional component can be directly restrained and suppressed by the panel body.

  As described above in detail, according to the present invention, permanent deformation of the door can be suppressed. 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.

  1 to 6 show a configuration of a door 12 to which a vehicle door structure 10 according to a first embodiment of the present invention is applied. FIG. 7 shows a configuration according to the first embodiment of the present invention. The modification of the vehicle door structure 10 is shown. 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 Out indicates the vehicle width direction outer 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 outer panel 14 disposed on the outer side in the vehicle width direction, a door inner panel 16 disposed on the inner side in the vehicle width direction so as to face the door outer panel 14 in the vehicle width direction, It is configured with.

  The door outer panel 14 constitutes the outer plate portion of the door 12, and is a single plate material made of a light metal such as an aluminum alloy or a magnesium alloy, for example, from the viewpoint of reducing the weight of the entire vehicle and improving the fuel efficiency. It is comprised by.

  As shown in FIG. 2, the door inner panel 16 is disposed on the upper side in the vehicle vertical direction of the plate-like door inner panel main body 18 constituting the inner plate portion of the door 12 and the door inner panel main body 18. And a door frame constituent part 22.

  The door inner panel body 18 of the door inner panel 16 extends in the vehicle front-rear direction. As shown in FIGS. 3 and 4, for example, hemming with the door outer panel 14 extended in the vehicle front-rear direction. The outer peripheral edge portions 24 are connected to each other by processing and adhesion.

  Further, the door frame constituting portion 22 of the door inner panel 16 shown in FIG. 2 is for constituting the door frame portion FR that supports the window glass 109 (see FIG. 1) of the door 12 and is configured in a frame shape. ing. The door frame constituting part 22 is formed integrally with the belt line constituting part 20 located in the belt line part BL of the door 12 in the door inner panel main body part 18 described above.

  The door inner panel 16 as a whole having the door inner panel main body 18 and the door frame constituting portion 22 is more line-shaped than the door outer panel 14 from the viewpoint of suppressing the thermal expansion amount of the door outer panel 14 as will be described later. It is made of a material having a small expansion coefficient, for example, a metal such as steel or titanium.

  As shown in FIGS. 1 and 2, the door inner panel 16 includes impact beams 26 (connection members), mirror brackets 28, lock reinforcements 30, belt lines as members for reinforcing the door 12. An inner 32 (door reinforcing member) and a beltline inner reinforcement 34 (connecting member) are provided.

  The impact beam 26 shown in FIG. 1 extends in the vehicle front-rear direction, and both ends of the vehicle front-rear direction are coupled to both ends of the door inner panel main body 18 in the vehicle front-rear direction via extensions 36 and 38, respectively. Yes. Further, the middle portion in the longitudinal direction of the impact beam 26 and the vehicle width direction wall portion 19 formed in the door inner panel main body portion 18 are connected by a bracket 40.

  As will be described later, the impact beam 26, the extensions 36 and 38, and the bracket 40 are all made of a material having a smaller linear expansion coefficient than the door outer panel 14, for example, steel or titanium, from the viewpoint of suppressing the thermal expansion amount of the door outer panel 14. It is composed of metal such as.

  The mirror bracket 28 is for fixing and holding a door mirror (not shown), and is integrally coupled to the front portion of the belt line inner 32 and the door inner panel 16 in the vehicle front-rear direction, as shown in FIG. .

  The lock reinforcement 30 is for reinforcing the peripheral portion of the door lock main body 101 shown in FIG. As shown in FIG. 2, the lock reinforcement 30 is configured by a plate-like panel body, and is lower than the attachment portion of the beltline inner 32 on the rear side in the vehicle front-rear direction of the door inner panel body 18. It is integrally connected to the part.

  As described later, the mirror bracket 28 and the lock reinforcement 30 are also made of a material having a smaller linear expansion coefficient than the door outer panel 14 from the viewpoint of suppressing the thermal expansion amount of the door outer panel 14, for example, a metal such as steel or titanium. It consists of

  As shown in FIG. 2, the beltline inner 32 includes a beltline reinforcing portion 42 coupled to the beltline constituting portion 20 of the door inner panel main body portion 18, and the beltline reinforcing portion 42 above and below the vehicle. The door frame reinforcing portion 44 is arranged on the upper side in the direction and is coupled to the door frame constituting portion 22 described above.

  The beltline reinforcing portion 42 of the beltline inner 32 extends in the vehicle front-rear direction, and the beltline constituting portion 20 of the door inner panel 16 that also extends in the vehicle front-rear direction and a plurality of portions along the vehicle front-rear direction. They are connected by connecting portions 46 (see FIG. 1).

  Of the end of the belt line reinforcing portion 42 on the front side in the vehicle front-rear direction, the upper portion in the vehicle vertical direction is the belt of the door inner panel 16 as shown in FIG. The vehicle is connected to a vehicle width direction wall portion 48, a vehicle front and rear direction wall portion 50, and a vehicle width direction wall portion 52 that are formed on the front side of the line constituting portion 20 in the vehicle front and rear direction. Further, of the end portion of the beltline reinforcing portion 42 on the front side in the vehicle front-rear direction, the lower portion in the vehicle vertical direction is a door inner panel as shown in FIG. 4 which is a sectional view taken along line 4-4 of FIG. The belt width direction wall part 48 and the vehicle front-rear direction wall part 50 formed on the front side in the vehicle front-rear direction of the sixteen belt line constituting parts 20 are respectively coupled.

  Further, of the end of the beltline reinforcing portion 42 on the rear side in the vehicle front-rear direction, the upper portion in the vehicle vertical direction is a door inner panel as shown in FIG. The vehicle belt front-rear direction wall portion 54 and the vehicle width-direction wall portion 56 formed on the rear side in the vehicle front-rear direction of the sixteen belt line constituting portions 20 are respectively coupled. Further, of the end portion of the beltline reinforcing portion 42 on the rear side in the vehicle front-rear direction, the lower portion in the vehicle vertical direction is a door inner as shown in FIG. 4 which is a sectional view taken along line 4-4 of FIG. The panel 16 is coupled to a vehicle front-rear direction wall 54 formed on the rear side in the vehicle front-rear direction of the belt line constituting part 20.

  Thus, in this embodiment, as shown in FIGS. 3 and 4, the beltline inner 32 has both ends in the vehicle front-rear direction extending to both ends in the vehicle front-rear direction of the door inner panel 16. The door inner panel 16 is coupled to both ends of the vehicle longitudinal direction.

  As shown in FIG. 5, the beltline reinforcing portion 42 of the beltline inner 32 is closed to the beltline portion BL of the door inner panel 16 and closed to the beltline portion BL of the door 12. Belt line closed section). As shown in FIG. 4, the closed section 66 extends continuously in the vehicle front-rear direction along the belt line portion BL of the door 12.

  As shown in FIG. 2, the door frame reinforcing portion 44 of the beltline inner 32 is configured in a frame shape along the forming direction of the door frame constituting portion 22 formed in the door inner panel 16 described above. The belt line reinforcing portion 42 is integrally formed. Further, the door frame reinforcing portion 44 is coupled to the door frame constituting portion 22 by a plurality of joining portions 68 (see FIG. 1) along the direction in which the door frame constituting portion 22 is formed.

  And the door frame reinforcement part 44 of this beltline inner 32 is formed in the door frame part FR of the door 12 with the door frame structure part 22 of the above-mentioned door inner panel 16, as shown in each sectional view of FIG. A closed cross section 70 (door frame closed cross section) is formed. The closed cross section 70 extends continuously along the direction in which the door frame portion FR of the door 12 shown in FIG. 1 is formed. Further, the closed cross section 70 formed in the door frame portion FR of the door 12 and the closed cross section 66 formed in the belt line portion BL of the door 12 described above are formed from the belt line portion BL of the door 12 to the door frame portion FR. Is formed continuously.

  Further, as shown in FIG. 5, a belt line inner reinforcement 34 extending along the vehicle front-rear direction is provided inside a closed cross section 66 formed in the belt line portion BL of the door 12. The beltline inner reinforcement 34 is connected to the beltline constituting portion 20 of the door inner panel 16 together with the beltline reinforcing portion 42 of the beltline inner 32 described above, and a plurality of connecting portions 46 along the vehicle front-rear direction (see FIG. 1). ).

  In the present embodiment, the beltline inner 32 and the beltline inner reinforcement 34 are also made of a material having a smaller linear expansion coefficient than the door outer panel 14 from the viewpoint of suppressing the thermal expansion amount of the door outer panel 14 as described later, for example, It is made of metal such as steel and titanium.

  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 outer panel 14 provided on the door 12 is formed of a light metal having a large coefficient of thermal expansion such as an aluminum alloy or a magnesium alloy, and generally has a single plate structure in which the plane portion is mostly occupied. It is said. For this reason, the door outer panel 14 tends to thermally expand larger than the door inner panel 16 by the thermal expansion force generated in all directions.

  However, according to the vehicle door structure 10 according to the first embodiment of the present invention shown in FIG. 1, as described above, the door inner panel 16 is coupled to the door outer panel 14 at the outer peripheral edge 24. The belt line constituting portion 20 provided on the door inner panel 16 has a belt line reinforcing portion 42 of a belt line inner 32 made of a material having a smaller linear expansion coefficient than that of the door outer panel 14 along the vehicle front-rear direction. Further, they are coupled by a plurality of coupling portions 46. Further, the door frame constituting part 22 formed integrally with the belt line constituting part 20 of the door inner panel 16 has a door frame reinforcing part 44 integrally formed with the belt line reinforcing part 42 of the belt line inner 32. Are combined.

  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 (arrow A) of the door outer panel 14 in the vehicle front-rear direction is reinforced by the beltline inner 32. It can be restrained and restrained by a high rigidity portion applied from the belt line constituting portion 20 of the door inner panel 16 to the door frame constituting portion 22 (the restraining direction in this case is indicated by an arrow B).

  That is, according to the vehicle door structure 10 according to the first embodiment of the present invention, a material having a smaller linear expansion coefficient than the door outer panel 14 from the belt line component 20 to the door frame component 22 of the door inner panel 16. The high-strength portion is reinforced by the beltline inner 32 formed by

  Therefore, for example, even when a thermal expansion force (arrow A) acts on the door outer panel 14 in the vehicle front-rear direction, both ends of the door inner panel 16 in the vehicle front-rear direction center on the vehicle vertical axis Z as shown in FIG. Bending deformation (arrow R) as an axis can be suppressed. Therefore, the thermal expansion (arrow A) in the vehicle front-rear direction of the door outer panel 14 shown in FIG. 1 is applied from the beltline component 20 of the door inner panel 16 reinforced by the beltline inner 32 to the door frame component 22. It can be restrained and restrained reliably by the high rigidity portion.

  Moreover, according to the vehicle door structure 10 according to the first embodiment of the present invention, the high rigidity portion that extends from the beltline component 20 of the door inner panel 16 reinforced by the beltline inner 32 to the door frame component 22. The thermal expansion (arrow C) in the vehicle vertical direction of the door outer panel 14 shown in FIG. 1 can also be restrained and suppressed (the restraining direction in this case is indicated by arrow D). As a result, permanent deformation due to thermal strain of the door outer panel 14 can be suppressed.

  Moreover, according to the vehicle door structure 10 according to the first embodiment of the present invention, as described above, the linear expansion from the belt line component 20 to the door frame component 22 of the door inner panel 16 is greater than that of the door outer panel 14. Since the high rigidity portion is reinforced by the belt line inner 32 made of a material having a small coefficient, even when the door 12 is placed in a low temperature environment, for example, the door frame portion is separated from the belt line portion BL of the door 12. Deformation over FR (particularly, deformation of the upper frame portion of the door frame portion FR toward the outside in the vehicle width direction) can be suppressed.

  In addition, according to the vehicle door structure 10 according to the first embodiment of the present invention, the belt line constituting part 20 and the belt line reinforcing part 42, and the door frame constituting part 22 and the belt line reinforcing part 42 include the door 12. Closed sections 66 and 70 (see FIGS. 3 to 6) are continuously formed from the belt line portion BL to the door frame portion FR.

  Therefore, the rigidity of the high-rigidity part that is applied from the beltline constituting part 20 of the door inner panel 16 to the door frame constituting part 22 can be further increased. As a result, the restraint force against the thermal expansion of the door outer panel 14 is further strengthened, so that permanent deformation due to thermal distortion of the door outer panel 14 can be further suppressed, and deformation of the door 12 from the belt line portion BL to the door frame portion FR (particularly, Further, deformation of the upper frame portion of the door frame portion FR toward the outside in the vehicle width direction can be further suppressed.

  Moreover, according to the vehicle door structure 10 according to the first embodiment of the present invention, the beltline inner 32 is a vehicle having door inner panels 16 at both ends in the vehicle front-rear direction as shown in FIGS. It extends to both ends in the front-rear direction and is coupled to both ends in the vehicle front-rear direction of the door inner panel 16. Accordingly, both end portions (outer peripheral edge portions) of the door inner panel 16 in the vehicle front-rear direction can be restrained by the beltline inner 32. Thereby, the restraint force with respect to the thermal expansion of the door outer panel 14 by the door inner panel 16 can be heightened more.

  Furthermore, according to the vehicle door structure 10 according to the first embodiment of the present invention, the beltline inner reinforcement 16 made of a material having a smaller linear expansion coefficient than that of the door outer panel 14 is provided in the beltline component 20 of the door inner panel 16. The ment 34 is coupled by a plurality of coupling portions 46 along the vehicle longitudinal direction. Therefore, the belt line inner reinforcement 34 can further increase the restraining force against the thermal expansion of the door outer panel 14 by the door inner panel 16. Thereby, the restraint force with respect to the thermal expansion of the door outer panel 14 by the door inner panel 16 can be heightened more.

  In addition, according to the vehicle door structure 10 according to the first embodiment of the present invention, the front and rear direction both ends of the impact beam 26 are coupled to the door inner panel 16 in addition to the beltline inner reinforcement 34. Moreover, the impact beam 26 is also made of a material having a smaller linear expansion coefficient than the door outer panel 14. Therefore, by the pair of upper and lower pairs of the beltline inner reinforcement 34 and the impact beam 26, the restraining force against the thermal expansion of the door outer panel 14 can be increased between the upper and lower sides of the door inner panel 16 in the vehicle. Thereby, the permanent deformation by the thermal strain of the door outer panel 14 can be further suppressed.

  As described above in detail, according to the vehicle door structure 10 according to the first embodiment of the present invention, permanent deformation due to thermal strain of the door outer panel 14 can be suppressed. Thereby, for example, it is possible to improve the accuracy of building the door 12 on the vehicle body.

  Moreover, according to the vehicle door structure 10 according to the first embodiment of the present invention, the door inner panel 16 and the beltline inner 32 continuously close the cross sections 66 and 70 from the beltline portion BL to the door frame portion FR. By forming, for example, when a side collision or the like occurs, the side collision load can be transmitted and distributed to the vehicle body via the closed cross-sections 66 and 70, and the load transmission efficiency at the time of the side collision can be improved. .

  Moreover, according to the vehicle door structure 10 according to the first embodiment of the present invention, even when the door 12 is placed in a high temperature environment or a low temperature environment, the deformation of the belt line portion BL accompanying the expansion and contraction of the door outer panel 14. (In particular, a change in the opening width W1 of the belt line opening shown in FIG. 5) and deformation of the door frame portion FR (twist deformation of the frame portion) can be prevented. Therefore, an increase in the lifting resistance of the window glass 109 can be suppressed. As a result, it becomes possible to improve fuel consumption by reducing power consumption.

  Next, a modified example of the vehicle door structure 10 according to the first embodiment of the present invention will be described.

  In the above embodiment, as shown in FIG. 5, the door inner panel 16 is extended to the upper end of the door 12, and the door inner panel 16 itself constitutes the belt line constituting unit 20. It may be configured.

  That is, as shown in FIG. 7, the upper end of the door inner panel 16 terminates at the lower end of the belt line portion BL of the door 12, and a belt line inner reinforcement 34 is provided on the upper portion of the door inner panel 16. The belt line component 20 may be configured by the line inner reinforcement 34 (that is, in this configuration, the door inner panel 16 includes the belt line inner reinforcement 34). A closed section 66 may be formed in the belt line portion BL of the door 12 by the belt line inner reinforcement 34 and the belt line inner 32 integrally coupled to the door inner panel 16.

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

  8 to 10 show a configuration of a door 222 to which the vehicle door structure 220 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 Out indicates the vehicle width direction outer side.

  The vehicle door structure 220 according to the second embodiment of the present invention is obtained by changing the following configuration with respect to the vehicle door structure 10 according to the first embodiment of the present invention described above. In addition, in 2nd embodiment of this invention, since it is the same as that of 1st embodiment of the above-mentioned this invention about structures other than the structure demonstrated below, about this 1st embodiment, about this same structure The detailed description is omitted by using the same reference numerals.

  In the door 222 to which the vehicle door structure 220 according to the second embodiment of the present invention is applied, the door inner panel 16 is a door inner disposed in the upper half in the vehicle vertical direction as shown in FIGS. It is divided into a panel upper 72 (first door inner panel body) and a door inner panel lower 74 (second door inner panel body) arranged in the lower half of the vehicle in the vertical direction.

  In the present embodiment, the door inner panel upper 72 is made of a material having a smaller linear expansion coefficient than the door outer panel 14, for example, a metal such as steel or titanium, from the viewpoint of suppressing the thermal expansion amount of the door outer panel 14 as described later. It is configured. In addition, the door inner panel lower 74 is made of a light metal such as an aluminum alloy or a magnesium alloy in the same manner as the door outer panel 14 from the viewpoint of reducing the weight of the entire vehicle and thus improving the fuel efficiency.

  As shown in FIG. 10, the door inner panel upper 72 and the door inner panel lower 74 are configured to have coupling wall portions 76 and 78 on each side in the vehicle vertical direction. The coupling wall portions 76 and 78 are formed continuously from the front end side to the rear end side of the door inner panel 16 in the vehicle front-rear direction (see FIGS. 8 and 9). As shown in FIG. 10, the door inner panel upper 72 and the door inner panel lower 74 are formed by the rivets 80 and the adhesive 82 in a state where the coupling wall portions 76 and 78 are overlapped in the plate thickness direction. The door inner panel 16 is integrated by being combined.

  Further, as shown in FIGS. 8 and 10, the door inner panel 16 formed by integrating the door inner panel upper 72 and the door inner panel lower 74 and the door outer panel 14 are, for example, hemmed and They are connected to each other at the outer peripheral edge 24 by bonding.

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

  According to the vehicle door structure 220 according to the second embodiment of the present invention, the door inner panel upper 72 and the door outer panel 14 are coupled to each other at the outer peripheral edge 24 by, for example, hemming and bonding. The vehicle front-rear direction both ends of the beltline reinforcing portion 42 of the beltline inner 32 are coupled to both ends of the inner panel upper 72 in the vehicle front-rear direction. The door inner panel upper 72 and the belt line inner 32 are both made of a material having a smaller linear expansion coefficient than the door outer panel 14.

  Accordingly, even when the entire door 222 is placed in a high temperature environment such as an electrodeposition paint baking and drying furnace, the thermal expansion (arrow A) of the door outer panel 14 is restrained by the beltline inner 32 and the door inner panel upper 72. (The restraining direction in this case is indicated by an arrow B).

  Moreover, according to the vehicle door structure 220 according to the second embodiment of the present invention, the door inner panel lower 74 includes the impact beam 26 extending in the vehicle front-rear direction as shown in FIG. Both ends in the direction are joined. The door inner panel lower 74 and the door inner panel upper 72 to which the impact beam 26 is coupled are continuously connected from the front end side to the rear end side in the vehicle front-rear direction by coupling wall portions 76 and 78 shown in FIGS. Are combined.

  Accordingly, the impact beam 26 coupled to the door inner panel lower 74 can increase the rigidity of the door inner panel upper 72 that restrains the door outer panel 14. Moreover, the impact beam 26 is made of a material having a smaller linear expansion coefficient than that of the door outer panel 14, similarly to the door inner panel upper 72. Therefore, even when the entire door 222 is placed in a high temperature environment such as an electrodeposition paint baking and drying furnace, the thermal expansion of the door outer panel 14 in the vehicle front-rear direction is reliably restrained by the door inner panel upper 72 and the impact beam 26. And can be suppressed.

  Further, according to the vehicle door structure 220 according to the second embodiment of the present invention, the thermal expansion of the door outer panel 14 in the vertical direction of the vehicle (arrow C) by the beltline inner 32 and the door inner panel upper 72 described above. Can also be restrained and restrained (the restraining direction in this case is indicated by an arrow D).

  Thereby, the permanent deformation by the thermal strain of the door outer panel 14 can be suppressed. As a result, for example, it is possible to improve the accuracy of building the door 222 on the vehicle body.

  In addition, according to the vehicle door structure 220 according to the second embodiment of the present invention, the connecting wall portions 76 and 78 (two-sheet joining portions) that are the connecting portion between the door inner panel upper 72 and the door inner panel lower 74 are provided. As shown in FIG. 8, the beltline inner reinforcement 34 and the impact beam 26 are set at the middle portion in the vehicle vertical direction.

  For this reason, the rigidity and strength of the door inner panel 16 at the middle portion in the vehicle vertical direction between the beltline inner reinforcement 34 and the impact beam 26 can be improved. Therefore, for example, when a side collision load is applied to the door inner panel 16 at the time of a side collision, the side collision load is transmitted to the front pillar and the center pillar side (vehicle body) via the above-described coupling wall portions 76 and 78 (two-sheet joining portion). Side) can be dispersed and the load transmission efficiency can be improved.

  Moreover, according to the vehicle door structure 220 according to the second embodiment of the present invention, the steel inner panel upper 72 having a large specific gravity is set at the height of the door handle 108 of the door 222. Therefore, since the center of gravity of the door 222 approaches the height of the door handle 108, the occupant's door closing operation force can be efficiently transmitted to the door 222, thereby improving the closing performance of the door 222.

  Further, according to the vehicle door structure 220 according to the second embodiment of the present invention, the door inner panel lower 74 is made of a light metal such as an aluminum alloy or a magnesium alloy as in the case of the door outer panel 14. Compared to the configuration according to the first embodiment, the weight of the door 222 can be reduced.

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

  FIG. 11 shows a configuration of a door 232 to which the vehicle door structure 230 according to the third embodiment of the present invention is applied. In this figure, the arrow Fr indicates the front side in the vehicle longitudinal direction, and the arrow Up indicates the upper side in the vehicle vertical direction.

  The vehicle door structure 230 according to the third embodiment of the present invention is obtained by changing the following configuration with respect to the vehicle door structure 10 according to the first embodiment of the present invention described above. In addition, in 3rd embodiment of this invention, since it is the same as that of 1st embodiment of the above-mentioned this invention about structures other than the structure demonstrated below, about this 1st embodiment, about this same structure The detailed description is omitted by using the same reference numerals.

  In the door 232 to which the vehicle door structure 230 according to the third embodiment of the present invention shown in FIG. 11 is applied, the door inner panel 16 includes a door inner panel upper 72 (first door) arranged on the vehicle vertical direction upper side. (Inner panel body) and a door inner panel lower 74 (second door inner panel body) arranged on the vehicle vertical direction lower side.

  At this time, the door inner panel upper 72 and the door inner panel lower 74 are divided at positions below the impact beam 26 in the vehicle vertical direction (divided at the positions of the connecting wall portions 76 and 78). The impact beam 26 is coupled to the lower side of the door inner panel upper 72 in the vehicle vertical direction via extensions 36 and 38 and a bracket 40.

  Further, the door inner panel upper 72 and the door inner panel lower 74 are integrated by being coupled in a state where the coupling wall portions 76 and 78 are overlapped in the plate thickness direction.

  Further, the door inner panel 16 formed by integrating the door inner panel upper 72 and the door inner panel lower 74 and the door outer panel 14 are coupled to each other at the outer peripheral edge 24 by, for example, hemming and bonding. Has been.

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

  According to the vehicle door structure 230 according to the third embodiment of the present invention, the door inner panel upper 72 includes, in addition to the beltline inner reinforcement 34, the impact beam 26 extending in the vehicle front-rear direction. Both ends in the direction are coupled to each other, and both the beltline inner reinforcement 34 and the impact beam 26 are made of a material having a smaller linear expansion coefficient than the door outer panel 14.

  Therefore, the combination of the upper and lower pairs of the beltline inner reinforcement 34 and the impact beam 26 can further increase the restraining force against the thermal expansion (arrow A) of the door outer panel 14 (the restraining direction in this case is indicated by the arrow B). ).

  Further, according to the vehicle door structure 230 according to the third embodiment of the present invention, the thermal expansion (arrow) of the door outer panel 14 in the vertical direction of the vehicle is achieved by a pair of upper and lower beltline inner reinforcement 34 and impact beam 26. C) can also be restrained and restrained (the restraining direction in this case is indicated by an arrow D).

  Furthermore, according to the vehicle door structure 230 according to the third embodiment of the present invention, the door inner panel upper 72 made of a material having a smaller linear expansion coefficient than the door outer panel 14 has a vehicle up-down direction rather than the impact beam 26. It is extended downward. For this reason, especially the thermal expansion of the vehicle outer vertical direction of especially the lower part of the door outer panel 14 can also be restrained and suppressed reliably.

  Thereby, the permanent deformation by the thermal strain of the door outer panel 14 can be suppressed. As a result, for example, it is possible to improve the accuracy of building the door 232 on the vehicle body.

[Fourth embodiment]
Next, a fourth embodiment of the present invention will be described with reference to FIG.

  The structure of the door 242 to which the vehicle door structure 240 according to the fourth embodiment of the present invention is applied is shown in an exploded view in FIG. In this figure, the arrow Fr indicates the front side in the vehicle longitudinal direction, and the arrow Up indicates the upper side in the vehicle vertical direction.

  The vehicle door structure 240 according to the fourth embodiment of the present invention is obtained by changing the following configuration with respect to the vehicle door structure 10 according to the first embodiment of the present invention described above. Note that in the fourth embodiment of the present invention, the configuration other than the configuration described below is the same as the configuration of the first embodiment of the present invention described above. Therefore, the same configuration is described in the first embodiment. The detailed description is omitted by using the same reference numerals.

  In the door 242 to which the vehicle door structure 240 according to the fourth embodiment of the present invention shown in FIG. 12 is applied, the door inner panel 16 includes a door inner panel upper 72 disposed on the upper side in the vehicle vertical direction, and a vehicle upper and lower side. The door inner panel lower 74 disposed on the lower side in the direction and the door inner panel upper center 84 (blocking wall portion) disposed at the center of the door inner panel upper 72 are divided.

  The door inner panel upper center 84 has a modular structure in which a window regulator 86 is integrally fixed using bolts or rivets. The central portion of the door inner panel upper 72 serves as a cutout portion 88 to which a modularized door inner panel upper center 84 is coupled.

  The door inner panel upper 72 and the door inner panel lower 74 are integrated by being coupled in a state where the coupling wall portions 76 and 78 are overlapped in the plate thickness direction, and the door inner panel upper 74 is integrated. A modularized door inner panel upper center 84 is integrally coupled to the peripheral portion of the cutout portion 88 of 72.

  Further, the door inner panel 16 formed by integrating the door inner panel upper 72, the door inner panel lower 74, and the door inner panel upper center 84 and the door outer panel 14 are mutually connected by, for example, hemming and bonding. Coupled at the peripheral edge 24.

  Next, operations and effects of the fourth embodiment of the present invention will be described.

  According to the vehicle door structure 240 according to the fourth embodiment of the present invention, the door inner panel upper center 84 in the center portion of the door inner panel upper 72 is divided from the wall portion around the door inner panel upper 72. The window regulator 86 is integrally fixed.

  Therefore, in the door 242 assembly process, for example, the door inner panel upper center 84 is formed into a module structure in which the window regulator 86 is integrally fixed, and then assembled to the peripheral portion of the cutout portion 88 of the door inner panel upper 72. Work procedures can be obtained.

  Therefore, the work hole 75 (see FIG. 8) for attaching the window regulator 86 provided in the door inner panel lower 74 can be eliminated. Therefore, the rigidity of the door inner panel lower 74 can be improved, and the restraining force against the thermal expansion (arrow A, arrow C) of the door outer panel 14 can be further increased (the restraining direction in this case is indicated by arrows B and D). .

  Thereby, the permanent deformation by the thermal strain of the door outer panel 14 can be suppressed reliably. As a result, for example, it is possible to improve the accuracy of installing the door 242 on the vehicle body.

[Fifth embodiment]
Next, a fifth embodiment of the present invention will be described with reference to FIG.

  FIG. 13 is an exploded view showing the structure of the door 252 to which the vehicle door structure 250 according to the fifth embodiment of the present invention is applied. In this figure, the arrow Fr indicates the front side in the vehicle longitudinal direction, and the arrow Up indicates the upper side in the vehicle vertical direction.

  The vehicle door structure 250 according to the fifth embodiment of the present invention is obtained by changing the following configuration with respect to the vehicle door structure 10 according to the first embodiment of the present invention described above. Note that in the fifth embodiment of the present invention, the configuration other than the configuration described below is the same as the configuration of the first embodiment of the present invention described above. Therefore, the same configuration is described in the first embodiment. The detailed description is omitted by using the same reference numerals.

  In the door 252 to which the vehicle door structure 250 according to the fifth embodiment of the present invention shown in FIG. 13 is applied, the door inner panel 16 includes a door inner panel upper 72 disposed on the upper side in the vehicle vertical direction, and a vehicle upper and lower side. The door inner panel lower 74 disposed on the lower side in the direction and the door inner panel lower center 90 (blocking wall portion) disposed at the center of the door inner panel lower 74 are divided.

  The door inner panel lower center 90 has a module structure in which a speaker 92 and a wire harness 94 are integrally fixed using bolts or rivets. The central portion of the door inner panel lower 74 is a cutout portion 96 to which a modularized door inner panel lower center 90 is coupled.

  The door inner panel upper 72 and the door inner panel lower 74 are integrated with each other in such a manner that the coupling wall portions 76 and 78 are overlapped in the thickness direction, and the door inner panel lower is integrated. A modularized door inner panel lower center 90 is integrally coupled to the peripheral edge portion of the cutout portion 96 of 74.

  Further, the door inner panel 16 formed by integrating the door inner panel upper 72, the door inner panel lower 74, and the door inner panel lower center 90 and the door outer panel 14 are mutually connected by, for example, hemming and bonding. Coupled at the peripheral edge 24.

  Next, the operation and effects of the fifth embodiment of the present invention will be described.

  According to the vehicle door structure 250 according to the fifth embodiment of the present invention, the door inner panel lower center 90 at the center of the door inner panel lower 74 is divided from the wall portion around the door inner panel lower 74. At the same time, the speaker 92 and the wire harness 94 are integrally fixed.

  Therefore, in the door 252 assembling process, for example, the door inner panel lower center 90 has a module structure in which the speaker 92 and the wire harness 94 are integrally fixed, and then the peripheral portion of the cutout portion 96 of the door inner panel lower 74. The work procedure of assembling can be obtained.

  Therefore, the work hole 73 (see FIG. 8) for attaching the speaker 92 and the wire harness 94 provided in the door inner panel upper 72 can be eliminated. Accordingly, the rigidity of the door inner panel upper 72 can be improved, and the restraining force against the thermal expansion (arrow A, arrow C) of the door outer panel 14 can be further increased (the restraining direction in this case is indicated by arrows B and D). .

  Thereby, the permanent deformation by the thermal strain of the door outer panel 14 can be suppressed reliably. As a result, for example, it is possible to improve the accuracy of building the door 252 on the vehicle body.

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

  FIGS. 14 to 16 show exploded views of the structure of the door 262 to which the vehicle door structure 260 according to the sixth 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 Out indicates the vehicle width direction outer side.

  The vehicle door structure 260 according to the sixth embodiment of the present invention is obtained by changing the following configuration from the vehicle door structure 10 according to the first embodiment of the present invention described above. In addition, in the sixth embodiment of the present invention, the configuration other than the configuration described below is the same as the configuration of the first embodiment of the present invention described above. Therefore, the same configuration is described in the first embodiment. The detailed description is omitted by using the same reference numerals.

  In the door 262 to which the vehicle door structure 260 according to the sixth embodiment of the present invention is applied, the door inner panel 16 is, as shown in FIG. 15, a door inner panel upper 72 ( The first door inner panel body) and the door inner panel lower 74 (second door inner panel body) arranged on the vehicle vertical direction lower side are divided.

  The door inner panel upper 72 has a module structure in which a window regulator 86, a door hinge 98, a door lock device 100, a door check mechanism 102, and a door frame 104 are integrally fixed by fastening or welding with bolts or rivets. The door inner panel lower 74 has a modular structure in which the impact beam 26, the extensions 36 and 38, the bracket 40, the speaker 92, the wire harness 94, and the shock absorbing pad 106 are integrally fixed by fastening or welding with bolts or rivets. It is said that.

  Further, as shown in FIG. 14, the door outer panel 14 includes a door outer panel upper 110 (first door outer panel body) disposed on the upper side in the vehicle vertical direction, and a door outer panel lower 112 ( And a second door outer panel body). As shown in FIG. 16, the door outer panel upper 110 and the door outer panel lower 112 are configured to have coupling wall portions 114 and 116 on both sides in the vehicle vertical direction. Further, the door outer panel upper 110 and the door outer panel lower 112 are configured to have bent portions 118 and 120 (deformation absorbing portions) adjacent to the coupling wall portions 114 and 116, respectively.

  The door outer panel upper 110 is coupled to the above-described modularized door inner panel upper 72 at the outer peripheral edge 24 by, for example, hemming and bonding as shown by a two-dot chain line in FIG. Similarly, as shown by a two-dot chain line in FIG. 15, the lower 112 is coupled to the above-described modularized door inner panel lower 74 at the outer peripheral edge 24 by, for example, hemming and bonding. Thus, the door outer panel upper 110 and the door inner panel upper 72 constitute a door upper module 111, and the door outer panel lower 112 and the door inner panel lower 74 constitute a door lower module 113.

  As shown in FIG. 16, the door upper module 111 and the door lower module 113 are configured so that the connecting wall portion 76 of the door inner panel upper 72 and the connecting wall portion 78 of the door inner panel lower 74 are in the thickness direction. In addition to being joined together, the joining wall portion 114 of the door outer panel upper 110 and the joining wall portion 116 of the door outer panel lower 112 are joined together in the state of being overlapped in the thickness direction. .

  Further, in the integrated door upper module 111 and door lower module 113, a door outer molding 122 is attached to the connecting portion between the door outer panel upper 110 and the door outer panel lower 112 from the outside in the vehicle width direction.

  Next, operations and effects of the sixth embodiment of the present invention will be described.

  According to the vehicle door structure 260 according to the sixth embodiment of the present invention, the door inner panel upper 72 has the window regulator 86, the door hinge 98, the door lock device 100, the door check mechanism 102, and the door frame 104 by bolts or rivets. The door inner panel lower 74 has an impact beam 26, extensions 36 and 38, a bracket 40, a speaker 92, a wire harness 94, and an impact absorbing pad 106 with bolts. Alternatively, the module structure is integrally fixed by fastening with rivets or welding. The door outer panel 14 is divided into a door outer panel upper 110 and a door outer panel lower 112 that are respectively coupled to the door inner panel upper 72 and the door inner panel lower 74.

  Therefore, in the assembly process of the door 262, for example, the door inner panel upper 72 and the door inner panel lower 74 have a modular structure, and the door inner panel upper 72 and the door inner panel lower 74 are connected to the door outer panel upper 110 and the door. The outer panel lower 112 can be coupled, and then the door inner panel upper 72 and the door inner panel lower 74 can be coupled, and the door outer panel upper 110 and the door outer panel lower 112 can be coupled.

  Therefore, a work hole 75 (see FIG. 8) for mounting the window regulator 86 and the like provided in the door inner panel lower 74, and a speaker 92 and the like provided in the door inner panel upper 72, etc. The working hole 73 (see FIG. 8) can be eliminated. Thereby, the rigidity of the door inner panel upper 72 and the door inner panel lower 74 can be improved, and the restraining force with respect to the thermal expansion (arrow A, arrow C) of the door outer panel 14 can be further increased (the restraining direction in this case is indicated by the arrow). B, indicated by arrow D).

  Moreover, according to the vehicle door structure 260 according to the sixth embodiment of the present invention, the door outer panel upper 110 and the door outer panel lower 112 described above are arranged on the sides of the vehicle in the vertical direction as shown in FIG. The connecting wall portions 114 and 116 are connected to each other, and the bending wall portions 118 and 120 are adjacent to the connecting wall portions 114 and 116 on the respective sides.

  Accordingly, even if the entire door outer panel 14 undergoes thermal expansion (arrow C1) or thermal contraction (arrow C2) in the vertical direction of the vehicle due to, for example, an electrodeposition coating baking process on the entire door 262, this thermal expansion and heat The shrinkage can be suppressed by absorbing the bent portions 118 and 120. Thereby, the permanent deformation by the thermal strain of the door outer panel 14 (especially general panel surface) can be suppressed.

  Thus, according to the vehicle door structure 260 according to the sixth embodiment of the present invention, permanent deformation due to thermal strain of the door outer panel 14 can be suppressed. As a result, for example, the accuracy of installing the door 262 on the vehicle body can be improved.

  In addition, according to the vehicle door structure 260 according to the sixth embodiment of the present invention, the door outer panel 14 is divided into the door outer panel upper 110 and the door outer panel lower 112. For this reason, the repairability of the door outer panel 14 can be improved.

  Further, a door outer molding 122 is provided from the outer side in the vehicle width direction at a joint portion between the door outer panel upper 110 and the door outer panel lower 112. For this reason, the external appearance of the door outer panel 14 can be ensured (that is, deterioration of appearance can be suppressed).

  Next, a modification of the vehicle door structure 260 according to the sixth embodiment of the present invention will be described.

  In the above embodiment, the door outer panel upper 110 and the door outer panel lower 112 are connected to each other by welding. For example, as shown in FIG. 17, the door outer panel upper 110 and the door outer panel lower 112 are connected by the blind rivet 115. They may be combined with each other.

  In the above embodiment, the door inner panel upper 72 and the door inner panel lower 74 are coupled to each other by the rivet 80 and the adhesive 82. However, as shown in FIG. 18, the door inner panel upper 72 and the door inner The panel lower 74 may be connected by a blind rivet 81, may be connected by a bolt 83 and a weld nut 85 as shown in FIG. 19, and as shown in FIG. The bolt 83 and the caulking nut 87 may be combined.

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

  FIG. 21 shows a configuration of a door 272 to which a vehicle door structure 270 according to a seventh embodiment of the present invention is applied, and FIG. 22 shows a vehicle door according to the seventh embodiment of the present invention. A variation of structure 270 is shown. In these drawings, the arrow Fr indicates the front side in the vehicle longitudinal direction, and the arrow Up indicates the upper side in the vehicle vertical direction.

  The vehicle door structure 270 according to the seventh embodiment of the present invention is obtained by changing the following configuration with respect to the vehicle door structure 10 according to the first embodiment of the present invention described above. In the seventh embodiment of the present invention, the configuration other than the configuration described below is the same as the configuration of the first embodiment of the present invention described above. The detailed description is omitted by using the same reference numerals.

  In the door 272 to which the vehicle door structure 270 according to the seventh embodiment of the present invention shown in FIG. 21 is applied, the door inner panel 16 includes a door frame panel portion 124 configured to include the door frame configuration portion 22. The door inner panel central portion 126 (including the first door inner panel body) configured to include the belt line constituting portion 20 and the door inner panel peripheral portion 128 (second door inner) disposed on the lower side in the vehicle vertical direction. (Panel body).

  The door frame panel portion 124 is configured to integrally include the mirror bracket 130 and the lock reinforcement 132 on both sides in the vehicle front-rear direction. The door inner panel peripheral portion 128 further includes a door inner panel front 134, a door The inner panel rear 136 and the door inner panel lower 138 are divided and configured.

  In the door 272, as shown in FIG. 21, the door inner panel peripheral portion 128, the impact beam 26, the extensions 36 and 38, the bracket 40, the door outer panel 14, the door handle 108, and the belt line inner are provided. A door outer module 141 is configured by integrally fixing the reinforcement inner 140.

  Further, in this door 272, as shown in FIG. 21, the door frame panel portion 124, the door inner panel central portion 126, the mirror bracket 130, the lock reinforcement 132, the beltline inner 32, and the beltline inner reinforcement. Mentor outer 142, door frame 104, window regulator 86, speaker 92, door lock device 100, and shock absorbing pad 106 are integrally fixed to form door inner module 143.

  The beltline inner reinforcement inner 140 is disposed in the beltline portion BL of the door 272 and extends in the vehicle front-rear direction, and both ends of the vehicle front-rear direction are provided in the door inner module peripheral portion 128 provided in the door outer module 141. Are connected to both ends in the vehicle longitudinal direction from the inside in the vehicle width direction.

  Further, the beltline inner reinforcement outer 142 is disposed on the beltline portion BL of the door 272 and extends in the vehicle front-rear direction, and both the vehicle front-rear direction both ends of the mirror bracket 130 provided on the door inner module 143 and the lock reinforcement. Ment 132 from the outside in the vehicle width direction.

  The beltline inner reinforcement inner 140 and the beltline inner reinforcement outer 142 are both linearly expanded from the door outer panel 14 from the viewpoint of suppressing the thermal expansion amount and the thermal contraction amount of the door outer panel 14 as described later. It is made of a material having a small coefficient, for example, a metal such as steel or titanium.

  The door outer module 141 modularized including the beltline inner reinforcement inner 140 and the door inner module 143 modularized including the beltline inner reinforcement 142 are finally door inner panels. The outer peripheral edge portion (front end edge portion 126A, rear end edge portion 126B, lower end edge portion 126C) of the central portion 126 is the inner peripheral edge portion (front end edge portion 128A, rear end edge portion 128B, lower end edge portion) of the door inner panel peripheral portion 128. 128C), and the mirror bracket 130 and the lock reinforcement 132 are overlapped with the door inner panel front 134 and the door inner panel rear 136 of the door inner panel peripheral portion 128 in the thickness direction, respectively. Are connected to each other By being assembled integrally as a door 272.

  Next, the operation and effects of the seventh embodiment of the present invention will be described.

  According to the vehicle door structure 270 of the seventh embodiment of the present invention, as described above, the door frame panel portion 124, the door inner panel central portion 126, and the door inner panel when assembled integrally as the door 272. A beltline inner reinforcement inner made of a material having a smaller linear expansion coefficient than that of the door outer panel 14 described above at the both ends in the vehicle front-rear direction of the beltline portion BL of the door inner panel 16 constituted by combining the peripheral portion 128. 140 and the beltline inner reinforcement outer 142 are connected to both ends in the vehicle front-rear direction.

  Therefore, even when the entire door 272 is placed in a high temperature environment or a low temperature environment, for example, the belt line inner reinforcement is applied to the thermal expansion (arrow A1) or the thermal contraction (arrow A2) of the door outer panel 14 in the vehicle front-rear direction. 34 and the beltline inner reinforcement outer 142 and the door inner panel 16 can be restrained and restrained (the restraining directions in this case are indicated by arrows B1 and B2, respectively). Thereby, the permanent deformation by the thermal strain of the door outer panel 14 can be suppressed.

  In particular, according to the vehicle door structure 270 of the seventh embodiment of the present invention, the door 272 is divided into the door outer module 141 and the door inner module 143 as described above. Accordingly, in the door 272 assembly process, the door outer module 141 and the door inner module 143 are modularized in advance, and the door outer module 141 and the door inner module 143 are assembled to constitute the entire door 272. You can get the procedure.

  For this reason, it is not necessary to provide a work hole for attaching a fitting or the like in the door inner panel central portion 126 and the door inner panel peripheral portion 128 (or the work hole can be reduced). As a result, the shrinkage direction of the door inner panel 16 configured to include the door inner panel central portion 126 and the door inner panel peripheral portion 128 is made uniform (in particular, as shown by the arrow E in FIG. The contraction direction of the portion 126 can be made uniform) and the rigidity thereof can be improved. As a result, the restraining force with respect to the heat shrinkage of the door outer panel 14 in the width direction of the door 272 by the door inner panel 16 can be further increased.

  Moreover, according to the vehicle door structure 270 of the seventh embodiment of the present invention, as described above, the restraining force against the thermal contraction of the door outer panel 14 in the vehicle front-rear direction can also be increased. A decrease in the opening width W2 of the formed door frame portion FR in the vehicle front-rear direction can also be suppressed.

  Further, according to the vehicle door structure 270 of the seventh embodiment of the present invention, the belt outer inner reinforcement 34, the belt line inner reinforcement outer 142, and the door inner panel 16 allow the door outer panel 14 to move in the vehicle vertical direction. Thermal expansion (arrow C1) or thermal contraction (arrow C2) can also be restrained and suppressed.

  Thereby, permanent deformation of the door 272 can be suppressed. As a result, for example, it is possible to improve the accuracy of installing the door 272 on the vehicle body.

  Next, a modified example of the vehicle door structure 270 according to the seventh embodiment of the present invention will be described.

  In the above embodiment, the beltline inner reinforcement inner 140 is coupled to the door inner panel peripheral portion 128 of the door outer module 141, and the beltline inner reinforcement outer 142 is coupled to the mirror bracket 130 and the lock reinforcement 132 of the door inner module 143. Although they are combined, they may be modified as follows.

  That is, as shown in FIG. 22, the beltline inner reinforcement outer 142 has a vehicle width at both ends in the vehicle front-rear direction of the door inner panel peripheral portion 128 provided on the door outer module 141 at the vehicle front-rear direction ends. The beltline inner reinforcement inner 140 may be coupled from the inner side in the vehicle width direction to the mirror bracket 130 and the lock reinforcement 132 provided on the door inner module 143 at both ends in the vehicle front-rear direction. good.

  Even if configured in this way, when the entire door 272 is placed in a high temperature environment or a low temperature environment, for example, the belt line inner reinforcement inner is provided with the thermal expansion or contraction of the door outer panel 14 in the vehicle front-rear direction. 140 and the beltline inner reinforcement outer 142 and the door inner panel 16 can be restrained and restrained. Thereby, the permanent deformation by the thermal strain of the door outer panel 14 can be suppressed.

[Eighth embodiment]
Next, an eighth embodiment of the present invention will be described with reference to FIG.

  FIG. 23 shows a configuration of a door 282 to which the vehicle door structure 280 according to the eighth embodiment of the present invention is applied. In this figure, the arrow Fr indicates the front side in the vehicle longitudinal direction, and the arrow Up indicates the upper side in the vehicle vertical direction.

  The vehicle door structure 280 according to the eighth embodiment of the present invention is obtained by changing the following configuration with respect to the vehicle door structure 270 according to the seventh embodiment of the present invention described above. In the eighth embodiment of the present invention, the configuration other than the configuration described below is the same as the configuration of the first embodiment of the present invention described above. The detailed description is omitted by using the same reference numerals.

  In the door 282 to which the vehicle door structure 280 according to the eighth embodiment of the present invention shown in FIG. 23 is applied, the door inner module 143 includes a door outer module 141 and bolts 162, 164, 166, 168 (fasteners). ) Is provided with a plurality of fixing portions.

  That is, in the door inner module 143, the fixing portion 144 is formed on the mirror bracket 130, and the fixing portions 146 and 148 are provided on the second front lower frame portion 105 and the rear lower frame portion 107 provided on the door frame 104. Are formed in the lock reinforcement 132 at a position aligned with the fixing portion 148 provided on the rear lower frame portion 107 of the door frame 104 and a position adjacent to the door lock main body portion 101. 152 are formed.

  The fixing portion 144 of the mirror bracket 130 and the fixing portion 150 of the lock reinforcement 132 are formed with screw holes into which the bolts 162 and 166 are respectively screwed. Further, holes for inserting bolts 164, 166, and 168 are formed in the fixing portions 146 and 148 of the second front lower frame portion 105 and the rear lower frame portion 107 and the fixing portion 152 of the lock reinforcement 132. .

  Further, the door outer module 141 is provided with a plurality of fixing portions at positions that align with the above-described fixing portions when the door inner module 143 is assembled.

  In other words, in the door outer module 141, the door inner panel front 134 is fixed at a position aligned with the fixing portion 144 of the mirror bracket 130 and a position aligned with the fixing portion 146 of the second front lower frame portion 105. Portions 154 and 156 are formed, respectively. The door inner panel rear 136 is formed with fixing portions 158 and 160 at positions that align with the fixing portion 150 of the lock reinforcement 132 and positions that align with the fixing portion 152, respectively.

  Hole portions into which bolts 162 and 168 are inserted are formed in the fixing portion 154 of the door inner panel front 134 and the fixing portion 160 of the door inner panel rear 136, respectively. Further, screw holes into which bolts 164 and 166 are screwed are formed in the fixing portion 156 of the door inner panel front 134 and the fixing portion 158 of the door inner panel rear 136.

  The door hinge 98 (functional part) is formed with a hole into which the bolt 162 is inserted, and the door lock body part 101 (functional part) is formed with a screw hole into which the bolt 168 is screwed.

  And in the door 282 of this embodiment, the door inner module 143 is assembled | attached to the door outer module 141 as follows. That is, the door inner module 143 is combined with the door outer module 141 to align the hole portion of the door hinge 98, the hole portion of the fixing portion 154 of the door inner panel front 134, and the screw hole of the fixing portion 144 of the mirror bracket 130. In this state, the bolt 162 is inserted into the hole portion of the door hinge 98 and the fixing portion 154 of the door inner panel front 134, and the bolt 162 is screwed into the screw hole of the fixing portion 144 of the mirror bracket 130. Then, the door hinge 98, the door inner panel front 134, and the mirror bracket 130 are fastened together with bolts 162.

  Similarly, the hole portion of the fixing portion 146 of the second front lower frame portion 105 and the screw hole of the fixing portion 156 of the door inner panel front 134 are aligned. In this state, the bolt 164 is inserted into the hole of the fixing portion 146 of the second front lower frame portion 105, and the bolt 164 is screwed into the screw hole of the fixing portion 156 of the door inner panel front 134, The second front lower frame part 105 and the door inner panel front 134 are fastened together with bolts 164.

  Furthermore, the hole of the fixing part 148 of the rear lower frame part 107, the hole of the fixing part 150 of the lock reinforcement 132, and the screw hole of the fixing part 158 of the door inner panel rear 136 are aligned. In this state, the bolt 166 is inserted into the hole of the fixing portion 148 of the rear lower frame portion 107 and the hole of the fixing portion 150 of the lock reinforcement 132, and the bolt 166 is inserted into the door inner panel rear 136. The rear lower frame portion 107, the lock reinforcement 132, and the door inner panel rear 136 are fastened together with bolts 166 by screwing into the screw holes of the fixing portion 158.

  Further, the hole portion of the fixing portion 160 of the door inner panel rear 136, the hole portion of the fixing portion 152 of the lock reinforcement 132, and the screw hole of the door lock main body portion 101 are aligned. In this state, the bolt 168 is inserted into the hole of the fixing part 160 of the door inner panel rear 136 and the hole of the fixing part 152 of the lock reinforcement 132, and the bolt 168 is inserted into the door lock main body 101. The door inner panel rear 136, the lock reinforcement 132, and the door lock main body 101 are tightened together with bolts 168 by screwing into the screw holes.

  Thus, in the door 282 of this embodiment, the door inner module 143 is assembled | attached to the door outer module 141 by each member fastening together with a fastener.

  Next, operations and effects of the eighth embodiment of the present invention will be described.

  According to the vehicle door structure 280 according to the eighth embodiment of the present invention, as described above, the second front lower frame portion 105 and the door inner panel front 134 of the door frame 104 are fastened together by the bolts 164, and the rear lower frame. The portion 107, the lock reinforcement 132, and the door inner panel rear 136 are fastened together with bolts 166. Further, a beltline inner reinforcement 34 is coupled to a door inner panel front 134 and a door inner panel rear 136 to which the door frame 104 is fastened, via a mirror bracket 130 and a lock reinforcement 132.

  Accordingly, even when the door 282 is placed in a low temperature environment and the heat contraction force (arrow A2) in the vehicle front-rear direction acts on the door outer panel 14, the beltline inner reinforcement 34 causes the door frame 104 to move. Deformation in the vehicle front-rear direction can be directly restrained and suppressed (the restraining direction in this case is indicated by an arrow B2). Thereby, the reduction | decrease of the opening width W2 of the vehicle front-back direction of the door frame part FR comprised including the door frame 104 can be suppressed more. As a result, it is possible to improve the accuracy with which the door frame part FR is built with respect to the vehicle body in a low temperature environment.

  Further, according to the vehicle door structure 280 according to the eighth embodiment of the present invention, as described above, the door hinge 98, the door inner panel front 134, and the mirror bracket 130 are fastened together by the bolts 162, and the door inner panel rear. 136, the lock reinforcement 132, and the door lock main body 101 are fastened together by bolts 168. The beltline inner reinforcement 34 is coupled to the mirror bracket 130 with the door hinge 98 fastened together and the lock reinforcement 132 with the door lock body 101 fastened together.

  Accordingly, even when the door 282 is entirely placed in a low temperature environment, for example, even when a thermal contraction force acts in the vehicle front-rear direction on the door outer panel 14, the mirror bracket 130 to which the beltline inner reinforcement 34 is coupled and the lock reinforcement. By 132, the positional deviation of the door hinge 98 and the door lock main body 101 can be directly restrained and suppressed. As a result, it is possible to improve the accuracy of building the door 282 with respect to the vehicle body in a low temperature environment.

  In addition, according to the vehicle door structure 280 according to the eighth embodiment of the present invention, as described above, by fastening the members together, the fasteners used for fastening can be reduced, and the door 282 can be reduced in weight. be able to.

  Further, according to the vehicle door structure 280 according to the eighth embodiment of the present invention, the mounting portion of the door hinge 98 is reinforced by the double structure of the mirror bracket 130 and the door inner panel front 134, and the door lock main body portion 101. Are reinforced with a double structure of a lock reinforcement 132 and a door inner panel rear 136. Therefore, even when a side collision or the like occurs, the side collision load acting on the outer portion of the door 282 can be transmitted and distributed to the front pillar and the rear pillar side (vehicle body side) through the double structure described above. Load transmission efficiency can be improved.

  Further, according to the vehicle door structure 280 according to the eighth embodiment of the present invention, the rear lower frame portion 107 of the door frame 104 is reinforced with the double structure of the lock reinforcement 132 and the door inner panel rear 136. Yes. Therefore, the opening / closing durability of the window glass supported by the door frame 104 can be improved.

  Next, a modified example of the vehicle door structure 280 according to the eighth embodiment of the present invention will be described.

  In the embodiment shown in FIG. 21, the second front lower frame portion 105 of the door frame 104 is fastened together with the bolt 164 to the door inner panel front 134. The lower frame portion 105 may be fastened to the mirror bracket 130 and the door inner panel front 134 by bolts 164.

  In this way, in addition to the rear lower frame portion 107 of the door frame 104 being reinforced with the double structure of the lock reinforcement 132 and the door inner panel rear 136, the second front lower frame portion 105 is also Since it is reinforced by the double structure of the mirror bracket 130 and the door inner panel front 134, the opening / closing durability of the window glass supported by the door frame 104 can be further improved.

  In the above embodiment, the bolt 162 is inserted into the hole of the door hinge 98 and the hole of the fixing part 154 of the door inner panel front 134, and the bolt 162 is inserted into the screw hole of the fixing part 144 of the mirror bracket 130. Although the door hinge 98, the door inner panel front 134, and the mirror bracket 130 are fastened together with the bolt 162 by screwing, the following may be employed.

  That is, a hole for inserting the bolt 162 is provided in the fixing part 144 of the mirror bracket 130 and a nut is provided on the back side of the hole, and the hole of the door hinge 98, the hole of the fixing part 154 of the door inner panel front 134, The bolt 162 is inserted into the hole of the fixing portion 144 of the mirror bracket 130, and the bolt 162 is screwed into the above-described nut, and the door hinge 98, the door inner panel front 134, and the mirror bracket 130 are connected to the bolt 162 and the above-described nut. It may be tightened together with a nut.

  Similarly, the second front lower frame portion 105 and the door inner panel front 134 may be fastened together with bolts 164 and nuts, and the rear lower frame portion 107, the lock reinforcement 132, and the door inner panel rear 136 may be fastened together with bolts 166 and nuts. Further, the door inner panel rear 136, the lock reinforcement 132, and the door lock main body 101 may be fastened together with bolts 168 and nuts.

  In the above embodiment, the beltline inner reinforcement 34 is provided in the door inner module 143. However, the beltline inner reinforcement 34 is provided in the door outer module 141, and the beltline inner reinforcement 34 is connected to the door inner module 34. You may couple | bond with the panel peripheral part 128 at the vehicle longitudinal direction both ends side.

  Even in this case, when the heat contraction force in the vehicle front-rear direction is applied to the door outer panel 14 because the entire door 282 is placed in a low temperature environment, for example, the door to which the beltline inner reinforcement 34 is coupled. The inner panel peripheral portion 128 can directly restrain and suppress the deformation of the door frame 104 in the vehicle front-rear direction. Further, the mirror bracket 130 and the lock reinforcement 132 to which the beltline inner reinforcement 34 is coupled via the door inner panel peripheral portion 128 directly restrains and suppresses the positional deviation of the door hinge 98 and the door lock main body 101. can do.

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. It is a principal part disassembled perspective view of the door to which the vehicle door structure which concerns on 1st embodiment of this invention was applied. FIG. 3 is a sectional view taken along line 3-3 in FIG. 1. FIG. 4 is a sectional view taken along line 4-4 of FIG. FIG. 5 is a sectional view taken along line 5-5 of FIG. 6 is a cross-sectional view taken along line 6a-6a, 6b-6b, 6c-6c in FIG. It is a figure which shows the modification of the door structure for vehicles which concerns on 1st embodiment of this invention. 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 a disassembled side view of the door inner panel which concerns on 2nd embodiment of this invention. FIG. 10 is a sectional view taken along line 10-10 in FIG. 8. It is a side view of the door to which the vehicle door structure which concerns on 3rd embodiment of this invention was applied. It is a disassembled side view of the door to which the vehicle door structure which concerns on 4th embodiment of this invention was applied. It is a disassembled side view of the door to which the vehicle door structure which concerns on 5th embodiment of this invention was applied. It is a side view of the door to which the vehicle door structure which concerns on 6th embodiment of this invention was applied. It is a disassembled side view of the door upper module and door lower module which concern on 6th embodiment of this invention. It is the 16-16 sectional view taken on the line of FIG. It is a figure which shows the modification of the vehicle door structure which concerns on 6th embodiment of this invention. It is a figure which shows the modification of the vehicle door structure which concerns on 6th embodiment of this invention. It is a figure which shows the modification of the vehicle door structure which concerns on 6th embodiment of this invention. It is a figure which shows the modification of the vehicle door structure which concerns on 6th embodiment of this invention. It is a disassembled side view which shows the state which divided | segmented the door which concerns on 7th embodiment of this invention into the door outer module and the door inner module. It is a figure which shows the modification of the vehicle door structure which concerns on 7th embodiment of this invention. It is a disassembled side view which shows the state which divided | segmented the door which concerns on 8th embodiment of this invention into the door outer module and the door inner module.

Explanation of symbols

10, 220, 230, 240, 250, 260, 270, 280 Vehicle door structure 14 Door outer panel 16 Door inner panel 20 Belt line component 22 Door frame component 26 Impact beam (connection member)
32 Beltline inner (door reinforcement member)
34 Beltline inner reinforcement (connecting member)
42 Beltline reinforcement 44 Door frame reinforcement 66 Closed section (beltline closed section)
70 Closed section (door frame closed section)
72 Door inner panel upper (first door inner panel body)
74 Door inner panel lower (second door inner panel body)
84 Door inner panel upper center (blocking wall)
86 Window regulator (functional parts)
88, 96 Cutout 90 Door Inner Panel Lower Center (Blocking Wall)
92 Speaker (functional parts)
94 Wire harness (functional parts)
98 Door hinge (functional parts)
101 Door lock body (functional parts)
110 Door outer panel upper (first door outer panel body)
112 Door outer panel lower (second door outer panel body)
118, 120 Bent part (deformation absorbing part)
124 Door frame panel (part of the first door inner panel)
126 The center part of the door inner panel (part of the first door inner panel body)
128 Door inner panel peripheral part (second door inner panel body)
130 Mirror bracket (part of the first door inner panel)
132 Lock reinforcement (part of the first door inner panel)
140 Beltline inner reinforcement inner (beltline reinforcement member)
141 Door outer module 142 Beltline inner reinforcement outer (beltline reinforcement member)
143 Door inner module 162, 164, 166, 168 bolt (fastener)
BL Beltline part FR Door frame part

Claims (10)

A door outer panel extending in the door width direction;
A belt line component that is located on the belt line portion of the door and that faces the door outer panel in the door thickness direction and extends in the door width direction and is coupled to the door outer panel at both ends in the door width direction; and And a frame-shaped door frame constituting part for constituting a door frame part that is integrally formed on one side of the belt line constituting part in the door height direction and supports the window glass of the door. Door inner panel,
A belt line reinforcing portion that is made of a material having a smaller linear expansion coefficient than the door outer panel, extends in the door width direction, and is coupled to the belt line constituting portion at least at both ends in the door width direction; and the belt A door reinforcing member configured to have a frame-like door frame reinforcing portion integrally formed with the line reinforcing portion and coupled to the door frame constituting portion;
A vehicle door structure characterized by comprising: A belt line closing section is formed in the belt line portion of the door by the belt line constituting portion and the belt line reinforcing portion,
A door frame closing section is formed in the door frame portion of the door by the door frame component and the beltline reinforcing portion,
The vehicle door structure according to claim 1, wherein the belt line closing section and the door frame closing section are formed continuously.   A connecting member that is made of a material having a smaller linear expansion coefficient than the door outer panel, extends in the door width direction, and is connected to both end sides in the door width direction of the door inner panel. The vehicle door structure according to claim 1, further comprising a vehicle door structure. The door inner panel is
A first door inner panel body made of a material having a smaller linear expansion coefficient than the door outer panel, the belt line constituting portion and the door frame constituting portion;
A second door inner panel body arranged on the opposite side of the door frame component and the door height direction of the first door inner panel body;
The vehicle door structure according to any one of claims 1 to 3, further comprising: The door inner panel is provided with a cutout part in part,
5. The vehicle door according to claim 1, wherein the cutout portion is closed by a closing wall portion in which functional parts are integrally fixed to form a module structure. 6. Construction. The door inner panel is
A first door inner panel body configured to include the belt line component and the door frame component;
A second door inner panel body disposed on the opposite side of the door height direction and the door frame constituent part of the first door inner panel body;
With
The first door inner panel body and the second door inner panel body have a modular structure in which functional parts are respectively fixed integrally.
The door outer panel is
A first door outer panel coupled to the first door inner panel;
A second door outer panel coupled to the second door inner panel;
The vehicle door structure according to any one of claims 1 to 3, further comprising:   The first door outer panel body and the second door outer panel body are coupled to each other in the door height direction and can absorb at least one of thermal expansion and contraction in the door height direction on each side. The vehicle door structure according to claim 6, further comprising a deformable absorber. The door inner panel is
A first door inner panel body configured to include the belt line component and the door frame component;
A second door inner panel body disposed on the opposite side of the door height direction and the door frame constituent part of the first door inner panel body;
Comprising
A door outer module in which the second door inner panel body and the door outer panel are combined with each other at the outer peripheral edge, and modularized;
The first door inner panel body and the door reinforcing member are coupled to each other at both ends in the door width direction and modularized, and are coupled to the second door inner panel body at least at both ends in the door width direction. Door inner module,
The first door inner panel body and the second door inner panel are made of a material having a smaller linear expansion coefficient than that of the door outer panel and are arranged in the belt line portion of the door and extend in the door width direction. A belt line reinforcing member coupled to at least one side of the body at both ends in the door width direction;
The vehicle door structure according to any one of claims 1 to 3, further comprising: A frame-like door frame disposed in the door frame portion of the door and extending in the door width direction;
The vehicle door structure according to claim 8, wherein the door frame, the first door inner panel body, and the second door inner panel body are fastened together by a common fastener. At least one of the door inner module and the door outer module includes a functional component,
The vehicle door according to claim 8 or 9, wherein the functional component, the first door inner panel body, and the second door inner panel body are fastened together by a common fastener. Construction.

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