CN115848109A - Automobile back door framework structure - Google Patents

Abstract

The invention belongs to the technical field of automobile back doors and discloses an automobile back door framework structure. The automobile back door framework structure comprises a window frame reinforcing plate, a back door inner plate (1), a back door hinge reinforcing plate (2), a back door air spring reinforcing plate (3), a back door support lower support (7), a door lock reinforcing plate (8) and a back door inner plate (1), wherein the window frame (9) is arranged above the back door inner plate (1), the back door hinge reinforcing plate (2) is located above the back door inner plate (1), the back door air spring reinforcing plate (3) is located at the position of the waist line of the back door inner plate (1), the back door air spring reinforcing plate (3) is attached to the arc line arrangement of the waist line of the back door inner plate (1), the back door support lower support (7) is located in a support cavity of the lower half section of the back door inner plate (1), and the door lock reinforcing plate (8) is located below the back door inner plate (1).

Description

A kind of framework structure of automobile back door

technical field

The invention belongs to the technical field of the back door of an automobile, and more specifically relates to a skeleton structure of the back door of an automobile.

Background technique

With the development of automobile technology, customers have higher and higher requirements for vehicle styling and vehicle NVH performance. The vehicle back door equipped with through-type taillights has become a highlight of many vehicles. At the same time, improving the vehicle NVH performance and product quality Market competitiveness is closely related. According to the traditional car back door design, the back door inner panel and the window frame reinforcement plate are divided into two parts, which is easy to exceed the lightweight target. However, it is difficult to meet the requirements of the stiffness mode; during driving, affected by the excitation of the road surface, it is easy to cause the rear door to vibrate and generate roaring noise, causing troubles to users. In the prior art, the modal is improved mainly by increasing the thickness of the reinforcement and the inner panel, which will lead to an increase in the weight and cost of the back door, which is not conducive to the lightweight of the whole vehicle and the improvement of market competitiveness.

Contents of the invention

The technical problem to be solved by the present invention is: aiming at the deficiencies of the prior art, to provide a simple structure, compared with the design of the back door of the automobile in the prior art, the window frame reinforcement plate is reduced, the weight of the vehicle is reduced, and the rear door is significantly improved. The bending and torsional modes of the back door frame improve the ability to resist vibration risks, improve the overall performance of the door, and finally meet the vehicle's back door frame structure for styling design, vehicle NVH performance and lightweight goals.

To solve the technical problems described above, the technical solution adopted by the present invention is:

The present invention relates to a skeleton structure of a back door of an automobile, which includes a back door inner panel, the back door inner panel includes an upper half above the waistline and a lower half below the waistline, and a window frame is arranged above the back door inner panel , the rear door hinge reinforcement plate is located above the rear door inner panel, the rear door gas spring reinforcement plate is located at the waistline of the rear door inner panel, and the rear door gas spring reinforcement plate is attached to the waistline of the rear door inner panel Arranged in an arc, the lower support bracket of the rear door is located in the support cavity of the lower half of the inner panel of the rear door, and the door lock reinforcement plate is located under the inner panel of the rear door.

A rear door hinge reinforcement plate is respectively arranged on the left side and the right side above the rear door inner panel, and each rear door hinge reinforcement plate is welded to the rear door inner panel respectively.

A rear door gas spring reinforcing plate is provided on the left side and right side of the waistline of the rear door inner panel, and each rear door gas spring reinforcing plate is welded to the rear door inner panel respectively.

The waistline position of the back door inner panel is also provided with a back door support upper bracket and a wiper motor reinforcement plate, and the back door support upper bracket and the wiper motor reinforcement plate are respectively welded and connected to the back door inner panel.

A rear door tail light mounting plate is respectively arranged on the left side outer side and the right side outer side of the waistline of the back door inner panel, and the back door tail light installation plate is connected with the back door outer panel through glue, and the back door tail light The plates are respectively welded and connected with the back door inner panel and the back door gas spring reinforcing plate.

Each side of the lower half of the inner panel of the back door is respectively provided with a support cavity, and each support cavity is respectively connected with a support lower part of the back door through welding points.

The upper half of the inner panel of the back door includes wiring harness holes, hinge mounting holes, window frames and weight-reducing holes, and a plurality of characteristic holes are also arranged on the upper half of the inner panel of the back door.

The lower half of the inner panel of the back door includes an upper weight-reducing hole, a lower weight-reducing hole, support ribs and characteristic holes, and deep ribs are arranged around the weight-reducing hole.

The support ribs close to the central axis of the rear door inner panel are connected to the rear door outer panel through welding points, the support ribs near the outer side of the rear door inner panel are connected to the rear door outer panel through glue, and the lower half of the rear door inner panel The characteristic holes of the segment are distributed on the waistline.

Adopt technical scheme of the present invention, working principle and beneficial effect are as follows:

The automobile back door skeleton structure described in the present invention designs a new type of automobile back door skeleton structure, which eliminates the window frame reinforcement plate of the traditional automobile back door in order to maintain the shape design and improve the NVH performance requirements. The back door inner panel and window frame reinforcement plate of the back door are no longer divided into two parts, combined with the stamping process, the back door inner panel is stamped and formed, and the back door inner panel directly forms the window frame, and then passes through different parts Set up different reinforcement plates, increase the size of the cavity in the middle of the waistline of the inner panel of the back door, extend the gas spring reinforcement plate of the back door to the upper and lower sections, increase the upper bracket of the back door support and arrange deep ribs to enhance the The rigidity of the rear door frame increases the overall mode of the rear door by 6Hz, which improves the NVH performance of the rear door. The car back door skeleton structure described in the present invention has a simple structure. Compared with the car back door design in the prior art, the window frame reinforcement plate is reduced, the weight of the vehicle is realized, and the bending and torsion of the back door skeleton are significantly improved. Modal, improve the ability to resist vibration risks, improve the overall performance of the door, and finally meet the goals of styling design, vehicle NVH performance and lightweight.

Description of drawings

The following is a brief description of the contents expressed in the drawings of this manual and the marks in the drawings:

Fig. 1 is the schematic structural view of the skeleton structure of the automobile back door according to the present invention;

Fig. 2 is the structural representation of the frame structure of the automobile back door according to the present invention;

The marks in the attached drawings are: 1-back door inner panel, 2-back door hinge reinforcement plate, 3-back door gas spring reinforcement plate, 4-back door support upper bracket, 5-back door tail light installation Plate, 6-wiper motor reinforcement plate, 7-rear door support lower bracket, 8-door lock reinforcement plate, 9-window frame, 10-waist line, 11-upper weight-reducing hole, 12-lower weight-reducing hole, 13-support ribs, 14-feature holes.

Detailed ways

Below with reference to the accompanying drawings, through the description of the embodiments, the specific embodiments of the present invention, such as the shape, structure, mutual position and connection relationship between the various parts, the role and working principle of the various parts, etc., will be further described. Detailed instructions:

As shown in accompanying drawing 1 and accompanying drawing 2, the present invention is a kind of car back door skeleton structure, comprises back door inner panel 1, and back door inner panel 1 comprises the upper half section above waistline 10 and waistline 10 In the following lower half, the window frame 9 is arranged above the back door inner panel 1, the back door hinge reinforcement plate 2 is positioned at the top of the back door inner panel 1, and the back door gas spring reinforcement plate 3 is positioned at the top of the back door inner panel 1. Waist line position, back door gas spring reinforcement plate 3 fits the arc line of the back door inner panel 1 waist line, back door support lower bracket 7 is located in the support cavity of the lower half of the back door inner panel 1 Among them, the door lock reinforcing plate 8 is located below the inner panel 1 of the back door. The above structure proposes an improved structure aiming at the deficiencies in the prior art. The present invention designs a new type of car back door skeleton structure, which cancels the traditional car back door window frame reinforcement plate, back door inner panel and The window frame reinforcement plate is no longer divided into two parts. Combined with the stamping process, the inner panel of the back door is stamped and formed, and the inner panel of the back door directly forms the window frame, and then different reinforcement plates are set at different parts, and the enlarged The size of the cavity in the middle of the waistline of the inner panel of the back door, the gas spring reinforcement plate 3 of the back door extended to the upper and lower sections, the addition of the upper support bracket 4 of the back door and the arrangement of deep ribs to enhance the rigidity of the back door frame. The overall mode of the back door is increased by 6Hz, which improves the NVH performance of the back door. The car back door skeleton structure described in the present invention has a simple structure. Compared with the car back door design in the prior art, the window frame reinforcement plate is reduced, the weight of the vehicle is realized, and the bending and torsion of the back door skeleton are significantly improved. Modal, improve the ability to resist vibration risks, improve the overall performance of the door, and finally meet the goals of styling design, vehicle NVH performance and lightweight.

A rear door hinge reinforcement plate 2 is respectively arranged on the left side and the right side above the rear door inner panel 1 , and each rear door hinge reinforcement plate 2 is welded to the rear door inner panel 1 respectively. In the above structure, the two rear door hinge reinforcement plates 2 are symmetrically arranged to strengthen the strength of the hinge.

A rear door gas spring reinforcing plate 3 is arranged on the left side and the right side of the waistline of the back door inner panel 1 respectively, and each back door gas spring reinforcing plate 3 is connected to the back door inner panel 1 by soldering points respectively. In the above structure, the two rear door gas spring reinforcing plates 3 are symmetrically arranged to strengthen the strength of the gas spring.

The waistline 10 of the back door inner panel 1 is also provided with a back door support upper bracket 4 and a wiper motor reinforcement plate 6, and the back door support upper bracket 4 and the wiper motor reinforcement plate 6 are respectively connected to the back door. The inner plate 1 is welded and connected. In the above structure, the rear door support upper bracket 4 and the wiper motor reinforcing plate 6 are symmetrically arranged respectively, and reliable fixed connection is realized by welding.

The waist line 10 of the back door inner panel 1 is provided with a back door tail light mounting plate 5 on the left side and right side outside respectively, and the back door tail light mounting plate 5 is connected with the back door outer panel 1 through glue, The back door tail light mounting plate 5 is welded and connected with the back door inner panel 1 and the back door gas spring reinforcing plate 3 respectively at the same time. In the above structure, the two back door and tail light mounting plates 5 are symmetrically arranged, and the back door and tail light mounting plates 5 are first connected by glue and then welded, so that they are reliably connected.

Each side of the lower half of the back door inner panel 1 is respectively provided with a supporting cavity, and a back door supporting lower bracket 7 is respectively connected to each supporting cavity through a welding spot. In the above structure, the supporting cavity is a part of the inner panel of the back door, which is formed when the back door is formed and cannot be processed separately. And when connecting each parts after the back door inner panel is processed, connect the back door support lower support 7.

The upper half of the back door inner panel 1 includes wiring harness holes, hinge mounting holes, window frames 9 and weight-reducing holes, and a plurality of feature holes 14 are also provided in the upper half of the back door inner panel 1 . The lower half of the back door inner panel 1 includes an upper weight reduction hole 11, a lower weight reduction hole 12, a support rib 13 and a characteristic hole 14, and deep convex ribs are arranged around the weight reduction hole. The support rib 13 close to the central axis of the back door inner panel 1 is connected with the back door outer panel 1 through welding points, and the support rib 13 near the outer side of the back door inner panel 1 is connected with the back door outer panel 1 through glue, and the rear The feature holes 14 in the lower half of the back door inner panel 1 are distributed on the waistline. In the above structure, the back door inner panel 1 is an integrated structure, including the upper half section above the waistline 10 and the lower half section below the waistline 10, the window frame is located in the upper half section, and the upper half section and the lower half section are respectively in accordance with the requirements Set up different structures to form a back door that meets the requirements.

The car back door skeleton structure described in the present invention, 1. Compared with the traditional car back door design, the window frame reinforcement plate is reduced, which can realize the lightweight of the vehicle. 2. Compared with the traditional car back door design, it retains the shape design and improves the market competitiveness. 3. The bending and torsional modes of the rear door frame are significantly improved, and the ability to resist vibration risks is improved.

The automobile back door skeleton structure described in the present invention designs a new type of automobile back door skeleton structure, which eliminates the window frame reinforcement plate of the traditional automobile back door in order to maintain the shape design and improve the NVH performance requirements. The back door inner panel and window frame reinforcement plate of the back door are no longer divided into two parts, combined with the stamping process, the back door inner panel is stamped and formed, and the back door inner panel directly forms the window frame, and then passes through different parts Set up different reinforcement plates, increase the size of the cavity in the middle of the waistline of the inner panel of the back door, extend the gas spring reinforcement plate of the back door to the upper and lower sections, increase the upper bracket of the back door support and arrange deep ribs to enhance the The rigidity of the rear door frame increases the overall mode of the rear door by 6Hz, which improves the NVH performance of the rear door. The car back door skeleton structure described in the present invention has a simple structure. Compared with the car back door design in the prior art, the window frame reinforcement plate is reduced, the weight of the vehicle is realized, and the bending and torsion of the back door skeleton are significantly improved. Modal, improve the ability to resist vibration risks, improve the overall performance of the door, and finally meet the goals of styling design, vehicle NVH performance and lightweight.

The present invention has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above-mentioned manner, as long as various improvements are adopted in the method concept and technical solutions of the present invention, or the present invention is converted without improvement. The ideas and technical solutions of the invention that are directly applied to other occasions are within the protection scope of the present invention.

Claims (9)

1. A car back door frame structure, characterized in that: it comprises a back door inner panel (1), and the back door inner panel (1) includes the upper half above the waist line (10) and the waist line (10) In the lower part below, the window frame (9) is set above the back door inner panel (1), the back door hinge reinforcement plate (2) is positioned at the top of the back door inner panel (1), and the back door gas spring reinforcement plate ( 3) Located at the waistline of the rear door inner panel (1), the rear door gas spring reinforcement plate (3) is arranged in an arc line that fits the waistline of the rear door inner panel (1), and the rear door supports the lower bracket ( 7) Located in the support cavity of the lower half of the back door inner panel (1), the door lock reinforcement plate (8) is located under the back door inner panel (1). 2. The automobile back door frame structure according to claim 1, characterized in that: a back door hinge reinforcement plate (2) is respectively arranged on the left side and the right side above the back door inner panel (1), Each back door hinge reinforcement plate (2) is respectively welded and connected with the back door inner panel (1). 3. The automobile back door frame structure according to claim 1 or 2, characterized in that: the left side and right side of the waist line of the back door inner panel (1) are respectively provided with a back door gas spring reinforcing plate (3), each rear door gas spring reinforcing plate (3) is welded to connect the rear door inner panel (1) respectively. 4. The automobile back door skeleton structure according to claim 1 or 2, characterized in that: the back door support upper bracket (4 ) and the wiper motor reinforcing plate (6), the rear door support upper bracket (4) and the wiper motor reinforcing plate (6) are respectively welded and connected to the rear door inner panel (1). 5. The automobile back door skeleton structure according to claim 1 or 2, characterized in that: the left outer side and the right outer side of the waist line (10) of the inner panel (1) of the back door are respectively provided with a rear The back door tail light installation plate (5), the back door tail light installation plate (5) is connected with the back door outer panel (1) through glue, and the back door tail light installation plate (5) is respectively connected with the back door inner panel ( 1) The rear door gas spring reinforcement plate (3) is welded and connected. 6. The automobile back door frame structure according to claim 1 or 2, characterized in that: each side of the lower half of the back door inner panel (1) is respectively provided with a supporting cavity, and each supporting cavity The body is respectively connected with a rear door support lower bracket (7) by welding spots. 7. The automobile back door skeleton structure according to claim 1, characterized in that: the upper half of the back door inner panel (1) includes wiring harness holes, hinge mounting holes, window frames (9) and Lightening hole, the upper half section of back door inner panel (1) is also provided with a plurality of feature holes (14). 8. The automobile back door frame structure according to claim 7, characterized in that: the lower half of the back door inner panel (1) includes an upper weight-reducing hole (11), a lower weight-reducing hole (12 ), supporting ribs (13) and characteristic holes (14), and the deep ribs are arranged around the lightening holes. 9. The automobile back door frame structure according to claim 8, characterized in that: the support ribs (13) close to the central axis of the back door inner panel (1) are connected to the back door outer panel (1) through welding points , the support ribs (13) near the outside of the back door inner panel (1) are connected with the back door outer panel (1) by glue, and the feature holes (14) in the lower half of the back door inner panel (1) are distributed in waistline.

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