Door structure of vehicle

Patent metadata

Field	Value
Publication number	US-9346340-B2
Application number	US-201414191189-A
Country	US
Kind code	B2
Filing date	Feb 26, 2014
Priority date	Mar 4, 2013
Publication date	May 24, 2016
Grant date	May 24, 2016

Abstract

An impact bar includes a U-shaped portion formed by a vertical face portion and upper-and-lower lateral face portions at its front end. The impact bar further includes upper-and-lower outer face portions. A pair of first joint portions which are formed so as to extend upward and downward from respective front ends of the upper-and-lower lateral face portions are joined to a lateral face portion of a door inner panel. A pair of second joint portions which are formed so as to extend forward from respective front ends of the upper-and-lower outer face portions are joined to a longitudinal face portion of the door inner panel.

First claim

What is claimed is:

1. A door structure of a vehicle, comprising:
a door body including a door inner panel and a door outer panel; and
an impact bar provided in an inner space of the door body and extending in a vehicle longitudinal direction, the impact bar being joined to the door inner panel of the door body, wherein the door inner panel of said door body includes a corner portion at a front end thereof, which is formed by a lateral face portion extending substantially in a vehicle width direction and a longitudinal face portion extending substantially in the vehicle longitudinal direction,
said impact bar includes a U-shaped portion at a front end thereof, the U-shaped portion being formed in substantially a U shape by a vertical face portion extending substantially in a vehicle vertical direction and upper-and-lower lateral face portions extending respectively outward in the vehicle width direction from upper and lower ends of the vertical face portion, the impact bar further including upper-and-lower outer face portions which are configured to extend upward and downward from respective outward ends of the upper-and-lower lateral face portions, and
said joining of the impact bar to the door inner panel of the door body is configured such that a pair of first joint portions which are formed so as to extend upward and downward from respective front ends of said upper-and-lower lateral face portions of the impact bar are joined to said lateral face portion of the corner portion of the door inner panel, respectively, whereas a pair of second joint portions which are formed so as to extend forward from respective front ends of said upper-and-lower outer face portions of the impact bar are joined to said longitudinal face portion of the corner portion of the door inner panel, respectively.

2. The door structure of a vehicle of claim 1 , wherein a body portion of said impact bar comprises said U-shaped portion, said upper-and-lower outer face portions, upper and lower face portions being configured to extend respectively inward in the vehicle width direction from upper and lower ends of the upper-and-lower outer face portions, and upper-and-lower inner face portions being configured to extend upward and downward from respective inward ends of the upper and lower face portions, whereby the body portion of the impact bar has substantially a W-shaped cross section.

3. The door structure of a vehicle of claim 2 , wherein a first ridgeline formed between said upper face portion and said upper outer face portion, a second ridgeline formed between the upper face portion and said upper inner face portion, and an upper end line formed at an upper end of the upper inner face portion converge at a point near a rear end of one of said second joint portions, and a third ridgeline formed between said lower face portion and said lower outer face portion, a fourth ridgeline formed between the lower face portion and said lower inner face portion, and a lower end line formed at a lower end of the lower inner face portion converge at a point near a rear end of the other of said second joint portions.

4. The door structure of a vehicle of claim 2 , wherein a first ridgeline formed between said upper face portion and said upper outer face portion and a second ridgeline formed between the upper face portion and said upper inner face portion converge at a point near a rear end of one of said second joint portions, and a third ridgeline formed between said lower face portion and said lower outer face portion and a fourth ridgeline formed between the lower face portion and said lower inner face portion converge at a point near a rear end of the other of said second joint portions.

5. The door structure of a vehicle of claim 1 , wherein said first joint portions are arranged at a position which overlaps a door hinge to attach the door body to a vehicle body in the vehicle vertical direction.

6. The door structure of a vehicle of claim 2 , wherein said first joint portions are arranged at a position which overlaps a door hinge to attach the door body to a vehicle body in the vehicle vertical direction.

7. The door structure of a vehicle of claim 3 , wherein said first joint portions are arranged at a position which overlaps a door hinge to attach the door body to a vehicle body in the vehicle vertical direction.

8. The door structure of a vehicle of claim 4 , wherein said first joint portions are arranged at a position which overlaps a door hinge to attach the door body to a vehicle body in the vehicle vertical direction.

9. The door structure of a vehicle of claim 1 , wherein said impact bar is attached between an upper portion of a front side portion of said door inner panel and a lower portion of a rear side portion of said door inner panel such that the impact bar slants with the front end thereof being located at a higher level than a rear end thereof.

10. The door structure of a vehicle of claim 2 , wherein a vertical width of said second joint portions is configured to be wider than that of said outer face portions of the body portion of the impact bar.

11. The door structure of a vehicle of claim 2 , wherein a vertical width of said body portion of the impact bar is configured to be substantially equal to a vertical distance between an upper end of an upper-side one of said second joint potions and a lower end of a lower-side one of said second joint portions and also equal to a vertical distance between an upper end of an upper-side one of said first joint potions and a lower end of a lower-side one of said first joint portions.

12. The door structure of a vehicle of claim 2 , wherein said impact bar includes a pair of joint flange portions at a rear end thereof, the pair of joint flange portions being configured to be integrally formed with said upper-and-low inner face portions and have a vertical width wider than that of the upper-and-low inner face portions, respectively, the pair of joint flange portions being fixed to a longitudinal face portion substantially extending in the vehicle longitudinal direction of a rear side portion of said door inner panel.

Assignees

• Mazda Motor

Inventors

• Ishigame Katsuyoshi
• Sugimura Yuichi
• Takaya Hirotaka
• Yukita Kyohei

Classifications

• B60J5/0429

  the elements being arranged diagonally · CPC title

• B60J5/0437

  characterised by the attachment means to the door, e.g. releasable attachment means · CPC title

• B60J5/042

  Reinforcement elements · CPC title

• B60J5/0443

  Beams · CPC title

• B60J5/0444 Primary

  characterised by a special cross section · CPC title