JP4478118B2 - Vehicle rear door structure - Google Patents

Description

  The present invention relates to a rear door structure of a vehicle, for example, an attachment structure for attaching a door accessory such as a rear wiper unit to a rear door.

In vehicles such as wagon cars and hatchback cars, the tailgate opening provided in the luggage compartment at the rear of the passenger compartment is opened and closed by a rear door such as a flip-up type or a side-opening type. A rear wiper unit is attached to the rear door.
The rear wiper unit is usually provided with a motor, a wiper pivot shaft, and a speed reduction mechanism on a base member. Such a rear wiper unit is disposed on the inner side of the rear door structure, and only the wiper pivot shaft projects through the through hole or the like at the front end thereof. A rear wiper arm is attached to the tip of the wiper pivot shaft that protrudes outward of the vehicle (see, for example, Patent Document 1 and Patent Document 2).
JP-A-8-164826 (see paragraph numbers 0029 to 0032 and FIG. 1) Japanese Patent Laying-Open No. 2001-105868 (see paragraph number 0012 and FIG. 6)

However, conventionally, the rear wiper unit has a mounting structure in which the base member of the rear wiper unit is supported only on the inner panel of the rear door structure or on the window glass itself using a fastening member such as a bolt. The mounting rigidity with respect to the door structure is low, which causes a problem that vibrations occur when the rear wiper unit is driven.
In the rear door structure described in Patent Document 1, an inner panel and an outer panel are provided by disposing a reinforcement between the inner panel and the outer pipe in a portion where the base member of the rear wiper unit is fixed by a fastening member. A closed cross section is formed between the rear door structure and the rear door structure to provide rigidity. However, such a closed structure reduces labor and cost in manufacturing the rear door. Invite and other problems.

  In addition, when a door accessory is attached to the rear door structure, for example, a heavy load such as a dynamic damper for suppressing the vibration of the rear door, the vibration during traveling is suppressed. Therefore, further improvement in the mounting rigidity of the rear door structure of the door appendage is desired.

  Therefore, the present invention has been developed to solve the above-described problems, and the door appendage can be attached with a simple structure and a more rigid and tough attachment structure that does not cause vibration or the like. An object of the present invention is to provide an improved rear door structure for a vehicle.

In order to solve the above-mentioned problems, the present invention provides a rear door structure of a vehicle that includes an inner panel disposed on the inner side of the vehicle, an outer panel disposed on the outer side of the vehicle, and a door accessory. The inner panel includes a window frame portion to which a window glass is attached to a frame portion having a shape that follows the outer shape of the rear door, and a lateral beam that extends in the vehicle body width direction of the vehicle, and the door appendage includes: A pair of beam mounting portions provided in the vehicle body width direction of the vehicle, and a panel mounting portion extending between the pair of beam mounting portions from the lateral beam toward the outer panel side; mounting portion, while attached to the lateral beam, the panel attachment portion is attached to the outer panel, said door accessory body, characterized in that it is a Riyawaipayuni' bets.

According to such a configuration, the door appendage is supported by the lateral beam and the outer panel across the lateral beam and the outer panel, so that the door accessory is attached depending on the rigidity of the lateral beam and the rigidity of the outer panel. The body can be attached with a tough attachment structure. Thus, for example, it is mentioned as a door appendages can be expected to suppress the vibration generated when the Riyawaipayuni' bets is driven.
Further, according to such a configuration, the Riyawaipayuni' bets, and two-point support by the pair of beam mounting portions with respect to the lateral beam, further, a robust mounting structure according to the three-point support of the one-point support by the panel mounting portion to the outer panel Can be attached. In other words, it is possible to attach the Riyawaipayuni' taken by minimum mounting labor to the rear door structure. Thereby, the workability at the time of manufacturing the rear door structure (rear door) is improved, and as a result, the effect of improving the assembly workability of the vehicle can be expected.

The door appendage is preferably attached to the lateral beam and the outer panel from the inside of the vehicle.

According to such a configuration, in addition to the above-described operation, the door appendage is fastened together with the garnish member on the outer panel, so that the door appendage is combined with the rigidity of the garnish member in addition to the rigidity of the outer panel. Can be mounted with a tougher mounting structure.

Also, the pre-Symbol beam attachment portion and the panel mounting portion, becomes is preferably formed so as to approach the wiper pivot axis of the rear wiper unit. In addition, it is preferable that the door appendage be attached to the lateral beam and the outer panel from the inside of the vehicle.

By comprising in this way, the rotational vibration transmitted from a wiper pivot axis | shaft can be effectively suppressed, without transmitting to the other by the beam mounting part and panel mounting part which were provided close.
Furthermore, by comprising in this way, an interior material etc. are attached to the vehicle inside of a rear door structure. In other words, the rear wiper unit can be attached to the rear door structure in the work stage (process) such as lining the interior material on the inner panel (rear door structure), thereby improving the assembly workability. Can be expected.

  According to the rear door structure of the vehicle of the present invention, a door accessory such as a rear wiper unit can be attached with a simple structure and a tough attachment structure with higher rigidity that does not generate vibration.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.

FIG. 1 is a perspective view showing a rear part of a vehicle body to which a rear door structure according to an embodiment of the present invention is applied. FIG. 2 is a perspective view of the inner panel of the rear door structure as viewed obliquely from the outside of the vehicle.
In the present embodiment, Fr indicates the front side and Rr indicates the rear side according to the direction viewed from the driver.

  The vehicle 1 is a so-called two-box car that does not have a partition that partitions the cabin (cabin) and the cargo compartment, and the rear door structure 2 has a tail provided in the cargo compartment at the rear of the compartment of the vehicle 1. The rear door 2a is attached so as to open and close the gate opening 3. As shown in FIG. 1, the upper edge of the rear door 2a and the upper edge of the opening of the tailgate opening 3 are connected by a pair of hinges 4, so that the hinge 4 serves as a fulcrum and opens and closes up and down. A flip-up opening / closing structure.

≪Configuration of rear door structure≫
The rear door structure 2 includes an inner panel 2-1 disposed on the inner side of the rear door 2a, and an outer panel 2-2 that is disposed on the outer side of the inner panel 2-1 to form an outer surface of the rear door 2a. It is configured with. And the rear door structure 2 is provided with the rear wiper unit 5 as a door appendage straddling between the outer panel 2-2 and the lateral beam 9 described later of the inner panel 2-1.

≪Inner panel configuration≫
As illustrated in FIGS. 1 and 2, the inner panel 2-1 includes a frame portion 6 having a shape that follows the outer shape of the rear door 2 a. The frame portion 6 includes a window frame portion 8 to which the window glass 7 is attached and a lateral beam 9 that extends in the vehicle body width direction of the vehicle 1. The inner panel 2-1 includes a pair of left and right reinforcing portions 10, 10 formed integrally with the frame portion 6.
The frame portion 6 is formed by press molding using a metal plate, and is formed so that the outer contour thereof is substantially rectangular.

The window frame portion 8 is formed integrally with the frame portion 6 on the substantially upper half side simultaneously with the press forming of the frame portion 6. As shown in FIG. 2, the window frame portion 8 is configured such that an opening 11 for attaching the window glass 7 by the lateral beam 9 is formed on the upper half side of the frame portion 6.
In addition, the opening peripheral part of the opening part 11 is formed in a slightly concave shape inside the vehicle, and when the window glass 7 is attached, the window glass 7 is substantially flush with the outer panel 2-2. (See Fig. 4)

As shown in FIG. 2, the lateral beam 9 extends in the vehicle body width direction of the vehicle 1 so as to divide the upper half portion side and the lower half portion side of the frame portion 6 vertically. The horizontal beam 9 is provided in the frame portion 6 by being joined to the beam joint portions 12 provided on both side frames 6-1 of the frame portion 6 by welding or the like.
And this horizontal beam 9 is attached to the outer side of the inner panel 2-1, by being formed in circular arc shape so that it may become convex toward the outer surface (vehicle outer side) of the rear door 2a (refer FIG. 1). It will be curved and formed along the outer surface of the outer panel 2-2.
The transverse beam 9 can be provided integrally with the frame portion 6 simultaneously with the press forming of the frame portion 6.

Incidentally, the cross-sectional shape of the transverse beam 9 is formed so that the size gradually increases from the both end portions toward the central portion. That is, the lateral beam 9 is formed so that the thickness in the direction of projecting outward from the vehicle gradually increases from both ends joined to the frame 6 toward the center. Thereby, the rigidity of the transverse beam 9 with respect to torsion and other bending stresses can be achieved.
As shown in FIG. 2, a concave portion 17 is formed in a substantially central portion of the horizontal beam 9 to which the rear wiper unit 5 is attached, and is recessed with an appropriate depth and shape toward the outside of the vehicle. A wiper motor 18 to be described later is accommodated in the recess 17 (see FIGS. 4 and 5).

  As shown in FIG. 2, the pair of reinforcing portions 10, 10 has a substantially V shape from the substantially central portion of the lower frame 6-2 of the frame portion 6 toward both side frames 6-1, 6-1. In addition, the frame portion 6 is provided. The reinforcing portions 10 are provided integrally with the frame portion 6 simultaneously with the press forming of the frame portion 6.

As shown in FIG. 2, the inner panel 2-1 configured in this way has a plurality of cut-and-raised portions 16 on the first opening 13, the second opening 14, and the third opening 15 side. Yes. The cut-and-raised portion 16 is formed to be bent so as to protrude in the direction toward the outer panel 2-2 (see FIG. 1), that is, the direction toward the vehicle outer side.
Further, the cut-and-raised portion 16 is formed on the first opening 13 side by being bent so as to stand up from each of the frame portion 6 and the reinforcing portions 10 and 10 so as to surround the first opening portion 13. Yes. The second opening 14 and the cut-and-raised portion 16 on the third opening 15 side are formed to be bent so as to rise from the frame 6. The leading ends of these cut-and-raised portions 16 are joined to the outer panel 2-2 (see FIG. 1) by welding, spot welding or other welding means, and adhesion means.

≪Configuration of rear wiper unit≫
FIG. 3 is a perspective view showing the rear wiper unit.
As shown in FIG. 3, the rear wiper unit 5 includes a wiper motor 18, a reduction gear group (not shown) and the like, a power transmission gear group (not shown) on the base member 5-1. The power transmission unit 20 incorporating the above is fixed and is mounted in parallel in the vehicle width direction of the vehicle 1 (see FIG. 1).
The speed reduction unit 19 and the power transmission unit 20 are a gear box formed integrally by molding using a synthetic resin material or the like, and the wiper motor 18 is engaged with one gear in the speed reduction unit 19. Is attached to the speed reduction part 19. The power transmission unit 20 is provided with a wiper pivot shaft 21.
Incidentally, the power transmission unit 20 includes a direction changing mechanism for converting the rotational movement in one direction of the speed reducing unit 19 and the wiper motor 18 into forward and reverse rotational movements of the wiper pivot shaft 21.

  The wiper pivot shaft 21 is provided such that the lower end side thereof is rotatably supported in the speed reduction portion 19 and protrudes from the speed reduction portion 19 with a predetermined length. One of the gears is provided so as not to rotate. Thus, the rear wiper unit 5 is configured such that the rotational power from the wiper motor 18 is transmitted to the wiper pivot shaft 21 via the speed reduction unit 19 and the power transmission unit 20.

≪Configuration of base member≫
The base member 5-1 is formed in a deformed shape elongated in the vehicle body width direction of the vehicle 1 by press molding using a metal plate having an appropriate thickness. The base member 5-1 includes a pair of beam mounting portions 22 and 23 in the vehicle body width direction of the vehicle 1, and between the pair of beam mounting portions 22 and 23, the lateral beam 9 and the outer panel 2-2. A panel mounting portion 24 extending toward the side is provided.

The pair of beam attaching portions 22 and 23 includes leg portions 25 bent at appropriate heights from both end edges of the base member 5-1 in the vehicle body width direction of the vehicle 1 in the same direction. It is formed by being bent in opposite directions in the vehicle body width direction.
Of the pair of beam mounting portions 22 and 23, the beam mounting portion 23 is, as shown in FIG. 3, one end edge side of the base member 5-1 on which the power transmission portion 20 from which the wiper pivot shaft 21 protrudes is mounted. That is, it is formed so as to be close to the wiper pivot shaft 21. As a result, it is possible to expect a vibration suppressing effect that effectively suppresses the rotational vibration of the wiper pivot shaft 21 in a state of being fixed to the transverse beam 9.

On the other hand, the panel mounting portion 24 is located between the pair of beam mounting portions 22 and 23 and from the lower end edge of the base member 5-1 at a position lower than the pair of beam mounting portions 22 and 23. , 23 and bent in the same direction.
As shown in FIG. 3, the panel mounting portion 24 is directed from the one end side of the base member 5-1 approaching the wiper pivot shaft 21 toward the outer panel 2-2 in the vehicle width direction of the base member 5-1. A leg portion 26 bent to an appropriate height is provided, and the leg portion 26 is further bent so as to be substantially parallel to the outer panel 2-2.

Next, how to attach the rear wiper unit 5 to the rear door structure 2 configured as described above will be described.
FIG. 4 is an enlarged vertical side view of a main part showing a state where the rear wiper unit is attached to the rear door structure, and FIG. 5 is an enlarged view showing a state where the rear wiper unit is attached to the rear door structure. It is a perspective view of the principal part seen from the inside. Here, description will be made with reference to FIG. 2 as appropriate.
As shown in FIG. 2, the rear wiper unit 5 is attached to the rear door structure 2 from the inside of the vehicle 1 using bolts 28 and 29.
As shown in FIGS. 4 and 5, the specific mounting structure includes a pair of beam mounting portions 22 and 23 provided on the base member 5-1 of the rear wiper unit 5, and a bolt 28 on the lateral beam 9. Each is fixed and the panel attaching part 24 is fixed to the outer panel 2-2 by using a bolt 29. As a result, the base member 5-1 of the rear wiper unit 5 is attached across the transverse beam 9 and the outer panel 2-2 as shown in FIG.
When the panel mounting portion 24 of the base member 5-1 is fixed to the outer panel 2-2, as shown in FIG. 4, the panel mounting portion 24 and the garnish member 27 provided on the outer side of the outer panel 2-2 are connected to the outer panel 2-. 2 is fixed by tightening together.

≪Configuration of garnish material≫
The garnish member 27 is integrally formed of a synthetic resin material or other molding material, and the panel mounting portion 24 of the base member 5-1 is bolted to the outer panel 2-2 at a predetermined position inside thereof. A nut member 30 for fastening together with 29 is inserted and integrally embedded (see FIGS. 2 and 4).

  Further, inside the garnish member 27, push stop members (not shown) called rivets for attaching the garnish member 27 itself to the outer panel 2-2 are provided at several important points.

  Further, as shown in FIGS. 2 and 4, the garnish member 27 includes a through hole 31 for projecting the wiper pivot shaft 21 of the rear wiper unit 5 from the vehicle inner side to the vehicle outer side. As a result, only the wiper pivot shaft 21 protrudes from the through hole 32 provided in the outer panel 2-2 through the through hole 31 of the garnish member 27 to the outside of the vehicle (see FIG. 4). A rear wiper arm 33 is attached to the front end portion (see FIG. 1).

According to the rear door structure 2 according to the present embodiment configured as described above, as shown in FIG. 4, the rear wiper unit 5 is straddled between the lateral beam 9 and the outer panel 2-2. And the outer panel 2-2 are fixedly supported, so that the rear wiper unit 5 can be mounted with a strong mounting structure by the rigidity of the lateral beam 9 and the rigidity of the outer panel 2-2. .
Thereby, the vibration etc. which arise when the rear wiper unit 5 drives can be suppressed. Moreover, when opening / closing the rear door 2a, it is possible to suppress various vibrations during traveling of the vehicle 1, and to expect various effects such as the prevention of chatter noise caused by the vibration. be able to.
In addition, when the member vibrates, relative displacement of each member can be suppressed. For example, relative displacement such that the wiper pivot shaft 21 enters and exits the through hole 31 of the garnish member 27 can be suppressed. . Thereby, the wiping performance of a wiper can be improved.

As shown in FIG. 4, the rear wiper unit 5 is fastened together with the garnish member 27 to the outer panel 2-2 via bolts 29 and nuts 30 so that the rigidity of the lateral beam 9 and the outer panel 2-2 is obtained. In addition, the rear wiper unit 5 can be mounted with a stronger mounting structure by a synergistic effect with the rigidity of the garnish member 27. Also, by fastening the individual members (parts) together, the number of parts such as bolts and other fastening members can be reduced and reduced, and as a result, improvement in assembly workability can be expected. .
In addition, the base member 5-1 of the rear wiper unit 5 has further improved rigidity by having the bent legs 25 and 26, and the main member 5-1 is interposed between the base member 5-1, the lateral beam 9, and the outer panel 2-2. The mounting rigidity of the rear wiper unit 5 can be further increased by arranging the wiper motor 18, the speed reduction unit 19, and the power transmission unit 20 as the parts.

  The rear wiper unit 5 is robustly attached by three-point support, ie, two-point support for the transverse beam 9 by the pair of beam attachment portions 22 and 23 and one-point support by the panel attachment portion 24 for the outer panel 2-2. Can be attached to the structure. That is, the rear wiper unit 5 can be attached to the rear door structure 2 with the minimum necessary number of steps for obtaining a strong attachment structure. As a result, it is possible to expect effects such as improvement in workability when the rear door structure 2 (rear door 2a) is manufactured and, as a result, improvement in assembly workability of the vehicle 1.

The specific configuration of the embodiment of the present invention is not limited to the above-described embodiment, and there are design changes and the like without departing from the gist of the present invention described in claims 1 to 5. Are also included in the present invention.
For example, the fixing location for attaching the base member of the rear wiper unit to the transverse beam is not limited to two locations by a pair of beam mounting portions, and may be a plurality of locations such as three locations beyond that. Similarly, the number of places fixed on the outer panel side is not limited to one, but may be a plurality of places and are arbitrary.
Further, the door accessory is not limited to the rear wiper unit, and includes, for example, a back monitor unit for guiding when the vehicle moves backward in a parking lot or the like, or a dynamic damper for suppressing door vibration. Can do. In short, the present invention has the gist of the present invention to attach the door appendage across the lateral beam of the rear door structure and the outer panel, and is not particularly limited as long as it does not deviate from this gist. is not.

It is a perspective view which shows the vehicle body rear part of the vehicle to which the rear door structure which concerns on embodiment of this invention is applied. It is the perspective view which looked at the inner panel of the rear door structure from the diagonally backward vehicle exterior. It is a perspective view which shows a rear wiper unit. It is a vertical side view of the principal part which expands and shows the state which attached the rear wiper unit to the rear door structure. It is the perspective view of the principal part seen from the vehicle inner side which expands and shows the state which attached the rear wiper unit to the rear door structure.

Explanation of symbols

1 Vehicle 2 Rear Door Structure 2-1 Inner Panel 2-2 Outer Panel 2a Rear Door 3 Tail Gate Opening 5 Rear Wiper Unit (Door Attachment)
5-1 Base member 6 Frame portion 7 Window glass 8 Window frame portion 9 Horizontal beam 18 Wiper motor 21 Wiper pivot shaft 22, 23 Beam mounting portion 24 Panel mounting portion

Claims (4)

A rear door structure of a vehicle configured to include an inner panel disposed inside the vehicle, an outer panel disposed outside the vehicle, and a door appendage ,
The inner panel includes a window frame portion to which a window glass is attached to a frame portion having a shape along the outer shape of the rear door, and a lateral beam extending in the vehicle body width direction of the vehicle,
The door appendage includes a pair of beam mounting portions provided in a vehicle body width direction of a vehicle, and a panel mounting portion extending from the lateral beam toward the outer panel between the pair of beam mounting portions. Prepared,
The pair of beam attachment portions are attached to the transverse beam, while the panel attachment portion is attached to the outer panel,
The door accessory body, the rear door structure of a vehicle which is a Riyawaipayuni' bets.   The vehicle rear door structure according to claim 1, wherein the panel attachment portion is attached to the outer panel together with a garnish member provided on the outside of the outer panel. Prior Symbol panel mounting portion, the rear door structure according to claim 1 or claim 2, characterized in that it is formed so as to approach the wiper pivot axis of the rear wiper unit.   The vehicle rear door structure according to any one of claims 1 to 3, wherein the door appendage is attached to the lateral beam and the outer panel from the inside of the vehicle.

Images