JPH0481322A - Door of automobile - Google Patents

Abstract

PURPOSE:To improve the fixing strength of a front end of an impact beam and transfer the external force applied to a door main frame to the whole of the door for distribution, and improve the original function of the impact beam by fixing the front end of the impact beam to a hinge bracket fixed to a front end wall of the door main frame. CONSTITUTION:An upper hinge 11 or the like is attached to a front end wall 6 of a door main frame 4 formed with an inner panel 3. A lock device 17, which is positioned inside of a rear end wall 16, is fixed to the rear end wall 16 of the door main frame 4. Furthermore, an impact beam 20 extending along an outer panel 2 in the longitudinal direction is located inside the door main frame 4. With this structure, a front end of the impact beam 20 is connected to a hinge bracket 7 of the upper hinge 11. Namely, the front end of the impact beam 20 is fixed to (S1) the door main frame 20, while being unified integrally with an extension part of a retainer 9, which fixes a nut 10 of the upper hinge 11 for support, by spot welding (S6).

Description

Detailed Description of the Invention [Industrial Application Field] The present invention provides a door body having an outer panel and an inner panel, a hinge bracket fixed to a front end wall of the door body, and a rear end of the door body. The door has a locking device fixed to the wall, and an impact beam disposed inside the door body, extending in the front and rear direction of the body, and having a front end and a rear end fixed to the door body. The rear end of the impact beam relates to a motor vehicle door which is connected to a locking device.

[Conventional technology]

Doors of the above type that are pivotally connected to the body of a motor vehicle so as to be openable and closable are well known in the art. FIG. 3 shows an example of a conventional door of this type, and FIG. 4 is a sectional view of the door shown in FIG. 3 when it is attached to a vehicle body.

The door 1 shown here has a door body part 4 consisting of an outer panel 2 and an inner panel 3, and a window frame part 5 integrally attached to the door body part 4, and a window glass (not shown) moves up and down.
The window opening of the window frame portion 5 is opened and closed.

The front end wall 6 of the door body 4 formed by the inner panel 3 is provided with an upper hinge 11 and a lower hinge lla spaced apart from each other in the vertical direction. These hinges 11. lla have substantially the same structure, so to explain only the upper hinge 11, the hinge bracket 7 is connected to the door body 4 by a nut 10 fixed to the retainer 9 and a bolt 8 screwed thereto. One end of a hinge arm 12 is pivotally attached to this bracket 7 via a pivot pin 15, and the other end of the arm 12 is fixed to a pillar 14 of a vehicle body 13. In this way, the door 1 is attached to the vehicle body 1 via both hinges 11 and lla.
3, and opens and closes around the pivot pin 15.

A lock device 17 located on the inside side is fixed to the rear end wall 16 of the door body 4 formed by the inner panel 3, and when the door 1 is closed as shown in FIG.
A striker 19 fixed to the other pillar 18 engages with the locking device 17, and the door 1 is locked with respect to the vehicle body 13.

An impact beam 20 is arranged inside the door main body 4 and extends along the outer panel 2 in the front-rear direction.
Its front end and rear end are fixed to the inner panel 3 of the door body 4 by spot welding, as indicated by Sl and S2 in FIG.

Further, each end of the connecting plate 21 is attached to the front end of the impact beam 20 and the front end wall 6 of the door body 4 at S3. S4
As shown in , the front end of the impact beam is fixed by spot welding, and the strength of fixing the front end of the impact beam to the door main body 4 is increased.

Further, the rear end portion of the impact beam 20 is attached to the inner panel rear end wall 16 of the door main body portion 4 with S9. The reinforcing plate 22 is spot-welded as shown by SIO, and the reinforcement plate 22 is spot-welded as shown by reference numeral S5, thereby increasing the fixing strength of the rear end portion of the impact beam to the door body portion 4. Further, the locking device 17 is fixed to the rear end wall 16 with the reinforcing plate 22 interposed therebetween.

The impact beam 20 has a wavy cross-sectional shape as shown in FIG. 5 in order to increase its rigidity. When a large external force is applied to the door body 4 from outside the vehicle, as shown by arrow P in FIG. The door main body 4 serves to prevent large deformation of the door body 4 by dispersing the information and dispersing it.

As mentioned above, the impact beam 20 is a member that reinforces the door 1, and in order to achieve this purpose, the connecting plate 21 is provided at its front end, and the reinforcing plate 2 is provided at its rear end.
2 to the locking device 17, and the door body 4
This increases the strength of fixing the material.

[Problem to be solved by the invention]

However, as is clear from FIG. 3, the conventional impact beam 20 has its front end fixed to the door body part that is relatively easily deformed between the upper hinge 11 and the lower hinge lla. Even though the front end is reinforced, when a large external force P is applied to the door 1, the portion of the door body 4 that fixedly supports the front end of the impact beam 20 deforms toward the inside of the vehicle, and as a result, Therefore, the impact beam 20 may also be bent and deformed as shown by the chain line in FIG. If the impact beam 20 is deformed in this way, the original function of the beam may be lost. For this reason, in the past, a large reinforcing member (not shown) was provided on the inner surface of the front end wall 6 of the inner panel 3 of the door body to increase its rigidity, thereby suppressing deformation caused by the external force P and impact beams. 20
This allows the system to perform its original functions without any hindrance.

However, reinforcing the front end wall 6 in this manner not only increases the weight of the door but also increases the cost.

SUMMARY OF THE INVENTION An object of the present invention is to provide an automobile door which eliminates the above-mentioned conventional drawbacks by a simple construction.

[Means to solve the problem]

In order to achieve the above object, the present invention proposes a door of the type mentioned at the outset, in which the front end of the impact beam is fixedly connected to a hinge bracket fixed to the front end wall of the door body.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

Although FIGS. 1 and 2 show one embodiment of the door according to the present invention, the basic structure of the door shown here is as described above with reference to FIGS. 3 to 5. It's no different than anywhere else. Therefore, the same or similar parts in FIGS. 1 and 2 and FIGS. 3 to 5 are designated by the same reference numerals.
Explanation of the same parts will be omitted.

The difference from the conventional one is that, as is clear from FIG. 1, the impact beam 20 is placed higher than in the case of FIG. The front end of the impact beam 20 is connected to the hinge bracket 7 of the upper hinge 11. That is, as shown in FIG. 2, the rear end of the impact beam 2o is connected to the locking device 17 via the reinforcing plate 22 as in the conventional case, but the front end of the impact beam 20 is connected to the lock device 17 as shown by the symbol S1. In addition to being fixed to the door body 4, it is also integrated by spot welding to an extension of the retainer 9 that fixedly supports the nut 10 of the upper hinge 11, as shown by reference numeral S6. In this way, the front end of the impact beam is fixedly connected to the hinge bracket 7 via the retainer 9, nut 10, and bolt 8.

According to the above-described structure, the front end of the impact beam 20 is connected to the hinge bracket 7, which has a high strength, so that its fixing strength is further increased than before, and the rear end is connected to the locking device 17 as before. Since it has been
Even if a large external force P is applied to the door body 4 from outside the vehicle, the impact beam 20 will not be easily deformed, and will transmit the external force to the entire door body 4 and disperse it throughout the door. can be done. By simply changing the position of the impact beam 20 in this way, the door body 4
The impact beam 20 can perform its original function without providing a large reinforcing member on the inner surface of the front end wall 6 of the inner panel.

Further, in the illustrated embodiment, the front end of the impact beam 20 is fixed to the hinge bracket 7 using the retainer 9 that fixes the nut 10, so that the retainer 9 has the function of holding the nut 10 and the function of holding the impact beam 20 on the hinge. It functions to connect to the bracket 7. Therefore, the connecting plate 21 for connecting the impact beams shown in FIG. 4 becomes unnecessary, and the number of parts, cost, and weight can be reduced. Further, the retainer 9 shown in FIG. 2 is S7°S8
As shown in FIG.
However, since the retainer 9 is also fixed to the front end wall 6 by bolts 8 and nuts 10, the strength of fixing the impact beam 20 to the front end wall 6 is further increased. When an external force is applied to S7.20 from outside the vehicle, the spot weld S7. It is also possible to prevent S8 from peeling off.

〔Effect of the invention〕

As described above, according to the present invention, the fixing strength of not only the rear end of the impact beam but also the front end of the impact beam can be increased, and the impact beam can transmit and disperse external force applied to the entire door body. The original function of the beam can be improved.

[Brief explanation of the drawing]

Fig. 1 is a front view of the door according to the present invention viewed from the inner panel side, and Fig. 2 shows the door shown in Fig. 1 assembled to the vehicle body, cut along the line ■-■ in Fig. 1. FIGS. 3 and 4 are views similar to FIGS. 1 and 2, showing examples of conventional doors, and FIG. 5 is a sectional view taken along the line -V in FIG. 4. 1... Door 2... Outer panel 3...
・Inner panel 4...Door main body 6...Front end wall 7...Hinge bracket 16...Rear end wall 17...Lock device 20...Impact beam agent Norio Hoshino, patent attorney

Claims (1)

[Claims] a door body having an outer panel and an inner panel; a hinge bracket fixed to a front end wall of the door body;
a locking device fixed to the rear end wall of the door body; and an impact beam disposed inside the door body, extending in the front-rear direction of the body, and having front and rear ends fixed to the door body. and a rear end portion of the impact beam,
An automobile door connected to a locking device, wherein a front end of the impact beam is fixedly connected to the hinge bracket.