CN115891593A

CN115891593A - Vehicle tail-gate

Info

Publication number: CN115891593A
Application number: CN202211309029.9A
Authority: CN
Inventors: 汪霞; 寇宏滨; 邱荣英
Original assignee: SAIC General Motors Corp Ltd; Pan Asia Technical Automotive Center Co Ltd
Current assignee: SAIC General Motors Corp Ltd; Pan Asia Technical Automotive Center Co Ltd
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2023-04-04

Abstract

The invention discloses a vehicle tail door, which comprises a tail door inner plate and a tail door outer plate, wherein the tail door inner plate is connected to the inner surface of the tail door outer plate; the tail door outer plate comprises an outer plate decoration layer, a first outer plate layer with a first outer unidirectional belt, a second outer plate layer with a second outer unidirectional belt, a third outer plate layer with a third outer unidirectional belt and a fourth outer plate layer with a fourth outer unidirectional belt; the outer plate decorative layer is laid on the outer side of the first outer plate layer; the first outer plate layer is laid on the outer side of the second outer plate layer, and an included angle between the extending direction of the first outer unidirectional belt and the extending direction of the second outer unidirectional belt is 90 degrees; the second outer plate layer is laid on the outer side of the third outer plate layer, and an included angle between the extending direction of the second outer unidirectional tape and the extending direction of the third outer unidirectional tape is 0 degree; the third outer plate layer is laid on the outer side of the fourth outer plate layer, and the extending direction of the third outer unidirectional belt is perpendicular to the extending direction of the fourth outer unidirectional belt. The thus manufactured vehicle tailgate is light in weight and ensures sufficient structural strength.

Description

Vehicle tail-gate

Technical Field

The invention relates to the technical field of vehicle equipment, in particular to a vehicle tail gate.

Background

The light weight of the vehicle is beneficial to energy conservation and emission reduction, and the light weight of the vehicle is also one of the problems considered by vehicle tail gate design workers during design.

The existing vehicle tail gate comprises an inner plate and an outer plate, wherein the inner plate and the outer plate are generally formed by punching and molding metal materials. In order to ensure the strength of the vehicle tail gate, the vehicle tail gate is thicker. So adopt metal material can make the vehicle tail-gate heavier, and if reduce vehicle tail-gate thickness, then can't guarantee structural strength.

In view of the above, improvements are needed.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a vehicle tail gate with good structural strength and light weight.

The technical scheme of the invention provides a vehicle tail door, which comprises a tail door inner plate and a tail door outer plate, wherein the tail door inner plate and the tail door outer plate are made of carbon fiber composite materials; the tail door outer plate comprises an outer plate decoration layer, a first outer plate layer with a first outer unidirectional tape, a second outer plate layer with a second outer unidirectional tape, a third outer plate layer with a third outer unidirectional tape and a fourth outer plate layer with a fourth outer unidirectional tape; the outer plate decoration layer is laid on the outer side of the first outer plate layer; the first outer plate layer is laid on the outer side of the second outer plate layer, and an included angle between the extending direction of the first outer unidirectional belt and the extending direction of the second outer unidirectional belt is 90 degrees; the second outer plate layer is laid on the outer side of the third outer plate layer, and an included angle between the extending direction of the second outer unidirectional tape and the extending direction of the third outer unidirectional tape is 0 degree; the third outer plate layer is laid on the outer side of the fourth outer plate layer, and the extending direction of the third outer unidirectional belt is perpendicular to the extending direction of the fourth outer unidirectional belt.

Further, the tailgate inner panel comprises an inner panel decorative layer, a first inner panel layer composed of a first inner unidirectional tape, a second inner panel layer composed of a second inner unidirectional tape, a third inner panel layer composed of a third inner unidirectional tape, a fourth inner panel layer composed of a fourth inner unidirectional tape, a fifth inner panel layer composed of a fifth inner unidirectional tape, a sixth inner panel layer composed of a sixth inner unidirectional tape, and a seventh inner panel layer composed of a seventh inner unidirectional tape; the first inner plate layer is laid on the outer side of the inner plate decoration layer; the second inner plate layer is laid on the outer side of the first inner plate layer, and an included angle between the extending direction of the first inner unidirectional tape and the extending direction of the second inner unidirectional tape is 45 degrees; the third inner plate layer is laid on the outer side of the second inner plate layer, an included angle between the extending direction of the third inner unidirectional belt and the extending direction of the second inner unidirectional belt is 45 degrees, and an included angle between the third inner unidirectional belt and the extending direction of the first inner unidirectional belt is 90 degrees; the fourth inner plate layer is laid on the outer side of the third inner plate layer, an included angle between the extending direction of the fourth inner unidirectional belt and the extending direction of the third inner unidirectional belt is 45 degrees, and an included angle between the extending direction of the fourth inner unidirectional belt and the extending direction of the second inner unidirectional belt is 90 degrees; the fifth inner plate layer is laid on the outer side of the fourth inner plate layer, an included angle between the extending direction of the fifth inner unidirectional belt and the extending direction of the fourth inner unidirectional belt is 45 degrees, and an included angle between the fifth inner unidirectional belt and the extending direction of the third inner unidirectional belt is 0 degree; the sixth inner plate layer is laid on the outer side of the fifth inner plate layer, an included angle between the extending direction of the sixth inner unidirectional belt and the extending direction of the fifth inner unidirectional belt is 45 degrees, and an included angle between the extending direction of the sixth inner unidirectional belt and the extending direction of the fourth inner unidirectional belt is 90 degrees; the seventh inner plate layer is laid on the outer side of the sixth inner plate layer, an included angle between the extending direction of the seventh inner unidirectional belt and the extending direction of the sixth inner unidirectional belt is 45 degrees, and an included angle between the extending directions of the fifth inner unidirectional belt is 90 degrees.

Further, the vehicle tail gate further comprises a wiper mounting shell, wherein the wiper mounting shell comprises a mounting shell and a shell cover plate; the casing apron is connected on the tail-gate inner panel, the installation casing with casing apron is connected, the installation casing with form the installation cavity that is used for installing the windscreen wiper between the casing apron.

Further, the mounting case includes a case base, a first projection and a second projection, the first projection and the second projection being arranged on the case base at an interval, the first projection and the second projection projecting in a direction away from the case cover.

Furthermore, a reinforcing rib is connected between the first convex part and the second convex part, and the reinforcing rib is in a concave shape.

Furthermore, the reinforcing rib comprises a first rib part and two second rib parts, and the two second rib parts are respectively connected to two ends of the first rib part; the first rib is connected with the shell base, one of the second ribs is connected with the first convex part, and the other second rib is connected with the second convex part.

Further, the second rib comprises a first end and a second end, and the distance between the first end and the first rib is greater than the distance between the second end and the first rib; the width of the first end portion is smaller than the width of the second end portion.

Further, a reinforcing strip is connected between the first convex part and the shell base part, and the reinforcing strip is positioned on one side of the first convex part, which is far away from the second convex part.

Further, the first convex part is provided with a first groove with an opening facing the shell cover plate, and the second convex part is provided with a second groove with an opening facing the shell cover plate; reinforcing ribs are arranged in the first groove and the second groove and are in a concave shape.

Further, an extension plate extending in a direction away from the housing base is connected to an end portion, facing the housing cover, of the housing base, and a reinforcing plate is connected between the extension plate and the housing base.

After adopting above-mentioned technical scheme, have following beneficial effect:

the tail-gate planking and the tail-gate inner panel of the vehicle tail-gate that this application technical scheme provided adopt carbon-fibre composite to make, have reduced weight. And the rigidity in the key power transmission direction is guaranteed by the laying mode of the first outer plate layer, the second outer plate layer, the third outer plate layer and the fourth outer plate layer in the tail door outer plate, and the structural strength is guaranteed on the basis of reducing the number of laying layers.

Drawings

The present disclosure will become more readily understood by reference to the following drawings. It should be understood that: these drawings are for illustrative purposes only and are not intended to limit the scope of the present disclosure. In the figure:

FIG. 1 is a schematic view of a tailgate for a vehicle according to an embodiment of the present invention;

FIG. 2 is a schematic view of an outer panel of the tailgate in accordance with an embodiment of the present invention;

FIG. 3 is a schematic view of an inner panel of the tailgate in accordance with an embodiment of the present invention;

FIG. 4 is a schematic view of a wiper mounting housing according to an embodiment of the present invention;

FIG. 5 is a schematic view of a mounting housing in accordance with an embodiment of the present invention;

FIG. 6 is a cross-sectional schematic view of a mounting housing in accordance with an embodiment of the present invention;

FIG. 7 is a schematic view of a stiffener according to an embodiment of the present invention;

FIG. 8 is a schematic view of a stiffener in accordance with an embodiment of the present invention;

FIG. 9 is a schematic view of a stiffener according to an embodiment of the present invention.

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings.

It is easily understood that according to the technical solution of the present invention, those skilled in the art can substitute various structures and implementation manners without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical aspects of the present invention, and should not be construed as limiting or restricting the technical aspects of the present invention.

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms.

As shown in fig. 1-2, a vehicle tailgate 10 according to an embodiment of the present invention includes a tailgate inner panel 1 and a tailgate outer panel 2, wherein the tailgate inner panel 1 is attached to an inner surface of the tailgate outer panel 2.

The tailgate outer panel 2 includes an outer panel trim 21, a first outer panel layer 22 having a first outer unidirectional tape 221, a second outer panel layer 23 having a second outer unidirectional tape 231, a third outer panel layer 24 having a third outer unidirectional tape 241, and a fourth outer panel layer 25 having a fourth outer unidirectional tape 251.

The outer panel decorative layer 21 is laid on the outer side of the first outer panel layer 22.

The first outer ply 22 is laid on the outer side of the second outer ply 23, and an angle between the extending direction of the first outer unidirectional tape 221 and the extending direction of the second outer unidirectional tape 231 is 90 degrees.

The second outer ply 23 is laid on the outer side of the third outer ply 24, and an angle between the extending direction of the second outer unidirectional tape 231 and the extending direction of the third outer unidirectional tape 241 is 0 degree.

The third outer ply 24 is laid on the outer side of the fourth outer ply 25, and the third outer unidirectional tape 241 extends in a direction perpendicular to the direction in which the fourth outer unidirectional tape 251 extends.

The vehicle tailgate 10 is mounted to the rear of the vehicle and is a conventional component part of the vehicle. The vehicle tail gate 10 is composed of a tail gate inner panel 1 and a tail gate outer panel 2. The tail door inner plate 1 and the tail door outer plate 2 are made of carbon fiber composite materials, and the tail door outer plate 2 is located on the outer side of the tail door inner plate 1 and is bonded with the tail door inner plate 1 to form the vehicle tail door 10.

The tailgate outer panel 2 includes an outer panel trim 21, a first outer panel layer 22, a second outer panel layer 23, a third outer panel layer 24, and a fourth outer panel layer 25. The first outer ply 22, the second outer ply 23, the third outer ply 24 and the fourth outer ply 25 are made of carbon fiber composite materials, wherein the reinforcing materials are T700 series 12K unidirectional tapes, the base materials are epoxy resin, and the resin molding process is adopted.

The first outer ply 22 has a first outer unidirectional tape 221, the second outer ply 23 has a second outer unidirectional tape 231, the third outer ply 24 has a third outer unidirectional tape 241, and the fourth outer ply 25 has a fourth outer unidirectional tape 251. First outer unidirectional tape 221, second outer unidirectional tape 231, third outer unidirectional tape 241, and fourth outer unidirectional tape 251 are unidirectional tapes of the same material.

The unidirectional tape has an extending direction, and for convenience of explanation, the extending direction of the unidirectional tape is a direction of 0 degree with respect to the width direction of the vehicle tailgate 10, that is, a horizontal direction. The extending direction of the first outer unidirectional tape 221 is a direction rotated counterclockwise by 45 degrees with respect to the horizontal direction, the extending direction of the second outer unidirectional tape 231 is a direction rotated clockwise by 45 degrees with respect to the horizontal direction, the extending direction of the third outer unidirectional tape 241 is a direction rotated clockwise by 45 degrees with respect to the horizontal direction, and the extending direction of the fourth outer unidirectional tape 251 is a direction rotated counterclockwise by 45 degrees with respect to the horizontal direction.

In the manufacture of the tailgate outer panel 2, the outer panel decoration layer 21, the first outer panel layer 22, the second outer panel layer 23, the third outer panel layer 24, and the fourth outer panel layer 25 are arranged in this order in the direction from the tailgate outer panel 2 toward the tailgate inner panel 1. The outer panel decoration layer 21 is laid on the outer side of the first outer panel layer 22, the first outer panel layer 22 is laid on the outer side of the second outer panel layer 23, the second outer panel layer 23 is laid on the outer side of the third outer panel layer 24, and the third outer panel layer 24 is laid on the outer side of the fourth outer panel layer 25. After the laying, the included angle between the first outer unidirectional tape 221 and the second outer unidirectional tape 231 is 90 degrees, the included angle between the second outer unidirectional tape 231 and the third outer unidirectional tape 241 is 0 degree, and the included angle between the third outer unidirectional tape 241 and the fourth outer unidirectional tape 251 is 90 degrees. The outer plate 2 of the tail door laid in the mode ensures the stress degree of the key force transmission direction, so that the requirement of rigidity is ensured only by laying five layers. Not only reduces the weight of the laid outer plate 2 of the tail door, but also simplifies the production steps.

Alternatively, the outer panel decoration layer 21 is composed of 3K twill cloth.

In one embodiment, as shown in fig. 1 and 3, the tailgate inner panel 1 includes an inner panel trim 11, a first inner panel layer 12 composed of a first inner unidirectional tape 121, a second inner panel layer 13 composed of a second inner unidirectional tape 131, a third inner panel layer 14 composed of a third inner unidirectional tape 141, a fourth inner panel layer 15 composed of a fourth inner unidirectional tape 151, a fifth inner panel layer 16 composed of a fifth inner unidirectional tape 161, a sixth inner panel layer 17 composed of a sixth inner unidirectional tape 171, and a seventh inner panel layer 18 composed of a seventh inner unidirectional tape 181. The first inner ply 12 is laid on the outer side of the inner panel decorative layer 11. The second inner ply 13 is laid on the outer side of the first inner ply 12, and the angle between the extending direction of the first inner unidirectional tape 121 and the extending direction of the second inner unidirectional tape 131 is 45 degrees. The third inner ply 14 is laid outside the second inner ply 13, and an angle between the extending direction of the third inner unidirectional tape 141 and the extending direction of the second inner unidirectional tape 131 is 45 degrees, and an angle between the extending direction of the first inner unidirectional tape 121 and 90 degrees. The fourth inner ply 15 is laid on the outer side of the third inner ply 14, and the angle between the extending direction of the fourth inner unidirectional tape 151 and the extending direction of the third inner unidirectional tape 141 is 45 degrees, and the angle between the extending direction of the second inner unidirectional tape 131 is 90 degrees. The fifth inner ply 16 is laid on the outer side of the fourth inner ply 15, and the angle between the extending direction of the fifth inner unidirectional tape 161 and the extending direction of the fourth inner unidirectional tape 151 is 45 degrees, and the angle between the extending direction of the third inner unidirectional tape 141 is 0 degree. The sixth inner ply 17 is laid on the outer side of the fifth inner ply 16, and the angle between the extending direction of the sixth inner unidirectional tape 171 and the extending direction of the fifth inner unidirectional tape is 45 degrees, and the angle between the extending direction of the fourth inner unidirectional tape 151 is 90 degrees. The seventh inner ply 18 is laid outside the sixth inner ply 17, and an angle between the extending direction of the seventh inner unidirectional tape 181 and the extending direction of the sixth inner unidirectional tape 171 is 45 degrees, and an angle between the extending direction of the fifth inner unidirectional tape 161 is 90 degrees.

Specifically, the tailgate inner panel 1 and the tailgate outer panel 2 are made of the same material, and the description of the material is specifically referred to the related content in the foregoing, and will not be repeated herein.

The tailgate inner panel 1 includes an inner panel decorative layer 11, a first inner panel layer 12, a second inner panel layer 13, a third inner panel layer 14, a fourth inner panel layer 15, a fifth inner panel layer 16, a sixth inner panel layer 17, and a seventh inner panel layer 18. First inner ply 12 has a first inner unidirectional tape 121, second inner ply 13 has a second inner unidirectional tape 131, third inner ply 14 has a third inner unidirectional tape 141, fourth inner ply 15 has a fourth inner unidirectional tape 151, fifth inner ply 16 has a fifth inner unidirectional tape 161, sixth inner ply 17 has a sixth inner unidirectional tape 171, and seventh inner ply 18 has a seventh inner unidirectional tape 181.

The first inner check belt 121 extends in a direction rotated 45 degrees counterclockwise with respect to the horizontal direction, the second inner check belt 131 extends in a direction rotated 90 degrees counterclockwise with respect to the horizontal direction, the third inner check belt 141 extends in a direction rotated 45 degrees clockwise with respect to the horizontal direction, the fourth inner check belt 151 extends in a horizontal direction, the fifth inner check belt 161 extends in a direction rotated 45 degrees clockwise with respect to the horizontal direction, the sixth inner check belt 171 extends in a direction rotated 90 degrees clockwise with respect to the horizontal direction, and the seventh inner check belt 181 extends in a direction rotated 45 degrees counterclockwise with respect to the horizontal direction.

When the tailgate inner panel 1 is manufactured, the inner panel decoration layer 11, the first inner panel layer 12, the second inner panel layer 13, the third inner panel layer 14, the fourth inner panel layer 15, the fifth inner panel layer 16, the sixth inner panel layer 17, and the seventh inner panel layer 18 are sequentially arranged in a direction toward the tailgate outer panel 2 of the tailgate inner panel 1. Wherein, the outside at interior board decorative layer 11 is laid to first interior ply 12, and the outside at first interior ply 12 is laid to second interior ply 13, and the outside at second interior ply 13 is laid to third interior ply 14, and the outside at third interior ply 14 is laid to fourth interior ply 15, and the outside at fourth inner panel etc. is laid to fifth interior ply 16, and the outside at fifth interior ply 16 is laid to sixth interior ply 17, and the outside at sixth interior ply 17 is laid to seventh interior ply 18.

After laying, the angle between the extending direction of the second inner unidirectional tape 131 and the extending direction of the first inner unidirectional tape 121 is 45 degrees, the angle between the extending direction of the third inner unidirectional tape 141 and the extending direction of the second inner unidirectional tape 131 is 45 degrees, and the angle between the extending direction of the third inner unidirectional tape 141 and the extending direction of the first inner unidirectional tape 121 is 90 degrees. The angle between the extending direction of the fourth inner unidirectional tape 151 and the extending direction of the third inner unidirectional tape 141 is 45 degrees, and the angle between the extending direction of the second inner unidirectional tape 131 is 90 degrees. The angle between the extending direction of the fifth inner unidirectional tape 161 and the extending direction of the fourth inner unidirectional tape 151 is 45 degrees, and the angle between the extending direction of the third inner unidirectional tape 141 is 0 degree. The angle between the extending direction of the sixth inner unidirectional tape 171 and the extending direction of the fifth inner unidirectional tape 161 is 45 degrees, and the angle between the extending direction of the fourth inner unidirectional tape 151 is 90 degrees. An angle between the extending direction of the seventh inner unidirectional tape 181 and the extending direction of the sixth inner unidirectional tape 171 is 45 degrees, and an angle between the extending direction of the fifth inner unidirectional tape 161 is 90 degrees.

The rigidity in the key force transmission direction is kept by laying, only 8 layers are laid, and the weight is greatly reduced.

Alternatively, the inner panel decorative layer 11 is produced from the same material as the outer panel decorative layer 21.

In one embodiment, as shown in fig. 1-4, the vehicle tailgate 10 further includes a wiper mounting housing 3, and the wiper mounting housing 3 includes a mounting housing 31 and a housing cover plate 32. The casing cover plate 32 is connected on the tail gate inner plate 1, the installation casing 31 is connected with the casing cover plate 32, and an installation cavity for installing the wiper is formed between the installation casing 31 and the casing cover plate 32.

The vehicle tail gate 10 further comprises a wiper mounting shell 3, and the wiper mounting shell 3 is mounted on the inner side of the tail gate inner plate 1 and used for mounting a wiper. The wiper mounting case 3 includes a mounting case 31 and a case cover plate 32, the case cover plate 32 is connected to the inner panel 1 of the tailgate, and the mounting case 31 is connected to the case cover plate 32. The mounting shell 31 is box-shaped, and encloses a mounting cavity with the shell cover plate 32, and the wiper blade is rotatably connected with the mounting cavity. The windscreen wiper mounting shell 3 is simple in structure, the mounting shell 31 is in a box shape, the structural strength is improved, the space of a mounting cavity is increased, and the windscreen wiper is convenient to mount.

Optionally, the housing cover 32 includes a cover base 321 and a cover side 322. The cover base plate 321 is connected with the tail gate inner plate 1, and the cover side plate 322 is connected with the cover base plate 321. The cover base 321 is connected with the cover side plate 322 in an L shape.

Be provided with curb plate arc 3221 on the apron curb plate 322, curb plate arc 3221 is the arc, so mechanical properties is better, can resist bigger power to it is not fragile.

In one embodiment, as shown in fig. 4 to 6, the mounting housing 31 includes a housing base 311, a first protrusion 312 and a second protrusion 313, the first protrusion 312 and the second protrusion 313 are arranged on the housing base 311 at intervals, and the first protrusion 312 and the second protrusion 313 protrude in a direction away from the housing cover 32.

Specifically, the mounting case 31 has a case base 311, and a first projection 312 and a second projection 313 projecting in a direction away from the case cover 32 are provided on a side of the case base 311 away from the case cover 32. The first convex portion 312 and the second convex portion 313 are arranged at intervals in the vertical direction of the vehicle tail gate 10.

The first and

second protrusions

312 and 313 are reinforcing structures of the mounting case 31, which increase the structural strength of the case base 311, making it less vulnerable.

In one embodiment, as shown in fig. 5-7, a rib 4 is connected between the first protrusion 312 and the second protrusion 313, and the rib 4 is in a concave shape.

Specifically, the first projection 312 and the second projection 313 are spaced apart from each other, a space is formed between the first projection 312 and the second projection 313, the rib 4 is provided in the space, and the rib 4 is connected between the first projection 312 and the second projection 313. The reinforcing beads 4 support the first and

second protrusions

312 and 313, thereby improving structural strength.

The reinforcing ribs 4 are in a concave shape, that is, a concave opening is formed on the surface of the reinforcing rib 4. The opening of the recess in this embodiment faces away from the housing cover 32. The concave reinforcing ribs 4 are light in weight and have certain elasticity, so that the reinforcing ribs are not easy to damage.

Alternatively, a plurality of reinforcing ribs 4 are provided between the first projection 312 and the second projection 313, and the plurality of reinforcing ribs 4 are arranged at intervals.

In one embodiment, as shown in fig. 5 to 7, the reinforcing rib 4 includes a first rib portion 41 and two second rib portions 42, and the two second rib portions 42 are respectively connected to both ends of the first rib portion 41. The first rib 41 is connected to the housing base 311, one of the second ribs 42 is connected to the first projection 312, and the other second rib 42 is connected to the second projection 313.

Specifically, the first rib 41 is connected to the housing base 311, one of the second ribs 42 is connected to an end of the first rib 41 facing the first projection 312 and connected to the first projection 312, and the other second rib 42 is connected to an end of the first rib 41 facing the second projection 313 and connected to the second projection 313. The distance between the end of the second rib 42 away from the housing base 311 and the housing base 311 is greater than the distance between the end of the first rib 41 away from the housing base 311 and the housing base 311, so that the first rib 41 and the two second ribs 42 are connected to form a concave shape. This arrangement enables the reinforcing bead 4 to be more firmly coupled between the first projection 312 and the second projection 313.

Alternatively, a portion of the housing base 311 between the first protrusion 312 and the second protrusion 313 is defined as a base plate surface, the base plate surface has a first plate surface 3111 connected to the first protrusion 312 and a second plate surface 3112 connected to the second protrusion 313, and a joint of the first plate surface 3111 and the second plate surface 3112 protrudes in a direction away from the housing cover plate 32, that is, an included angle between the first plate surface 3111 and the second plate surface 3112 after being connected is an obtuse angle. So the stress effect is better, and the strength is improved.

In one embodiment, as shown in fig. 7, second rib 42 includes a first end 421 and a second end 422, and a distance between first end 421 and first rib 41 is greater than a distance between second end 422 and first rib 41. The width of the first end 421 is smaller than the width of the second end 422.

Specifically, second rib 42 has a first end 421 distal from first rib 41 and a second end 422 proximal to first rib 41, the width of first end 421 being less than the width of second end 422. The entire second rib 42 is tapered in a direction from the housing cover 32 toward the mounting housing 31.

In one embodiment, as shown in fig. 5 and 8, a reinforcing bar 5 is connected between the first protrusion 312 and the housing base 311, and the reinforcing bar 5 is located on a side of the first protrusion 312 away from the second protrusion 313.

Specifically, a portion of the housing base 311 is located on a side of the first projection 312 away from the second projection 313, and the reinforcing bar 5 is connected between the first projection 312 and the portion. This improves the structural strength between the first projection 312 and the case base 311.

Alternatively, the reinforcing bar 5 includes a first connecting bar 51 connected to the case base 311 and a second connecting bar 52 connected to the second protrusion 313. The angle between the first connecting bar 51 and the second connecting bar 52 is obtuse.

Alternatively, a plurality of reinforcing bars 5 are disposed between the housing base 311 and the first convex portion 312, and the plurality of reinforcing bars 5 are disposed at intervals.

In one embodiment, as shown in fig. 4, the first protrusion 312 is provided with a first groove 3121 opened toward the housing cover 32, and the second protrusion 313 is provided with a second groove 3131 opened toward the housing cover 32. Reinforcing ribs 6 are arranged in the first groove 3121 and the second groove 3131, and the reinforcing ribs 6 are in a concave shape.

Specifically, the mounting housing 31 has a housing cavity opening toward the housing cover 32, the first protrusion 312 is provided on a surface facing the housing cover 32 with a first groove 3121 opening toward the housing cover 32, and the second protrusion 313 is provided on a surface facing the cover with a second groove 3131 opening toward the housing cover 32. Both the first groove 3121 and the second groove 3131 communicate with the housing cavity.

Reinforcing ribs 6 are connected in both the first groove 3121 and the second groove 3131, and the reinforcing ribs 6 are in a concave shape, thereby improving structural strength in the installation case 31. The structure of the reinforcing ribs 6 is the same as that of the reinforcing ribs 4 described above, and will not be described in detail.

In one embodiment, as shown in fig. 4-5 and 9, an extension plate 314 extending in a direction away from the housing base 311 is connected to an end of the housing base 311 facing the housing cover 32, and a reinforcing plate 7 is connected between the extension plate 314 and the housing base 311.

Specifically, the housing base 311 is connected to an end of the housing cover 32 with an extension plate 314, and the extension plate 314 extends away from the housing base 311. The extension plate 314 increases the contact area with the housing cover 32, thereby making the connection between the mounting housing 31 and the housing cover 32 more secure.

The reinforcing plate 7 is connected between the extension plate 314 and the case base 311, thereby improving the structural strength between the extension plate 314 and the case base 311.

Optionally, the reinforcing plate 7 is triangular, so that the structural strength is better.

In summary, the invention discloses a vehicle tail gate 10, which comprises a tail gate inner plate 1 and a tail gate outer plate 2, wherein the tail gate inner plate 1 is connected to the inner surface of the tail gate outer plate 2. The tailgate outer panel 2 includes an outer panel decoration layer 21, a first outer panel layer 22 composed of a first outer unidirectional tape 221, a second outer panel layer 23 composed of a second outer unidirectional tape 231, a third outer panel layer 24 composed of a third outer unidirectional tape 241, and a fourth outer panel layer 25 composed of a fourth outer unidirectional tape 251. The outer panel decorative layer 21 is laid on the outer side of the first outer panel layer 22. The first outer ply 22 is laid on the outer side of the second outer ply 23, and the angle between the extending direction of the first outer unidirectional tape 221 and the extending direction of the second outer unidirectional tape 231 is 90 degrees. The second outer ply 23 is laid on the outer side of the third outer ply 24, and an angle between the extending direction of the second outer unidirectional tape 231 and the extending direction of the third outer unidirectional tape 241 is 0 degree. The third outer ply 24 is laid on the outer side of the fourth outer ply 25, and the third outer unidirectional tape 241 extends in a direction perpendicular to the direction in which the fourth outer unidirectional tape 251 extends. The thus manufactured vehicle tailgate 10 is light in weight and ensures sufficient structural strength. The tail door outer plate 2 and the tail door inner plate 1 of the vehicle tail door 10 are made of carbon fiber composite materials, so that the weight is reduced. And the rigidity in the key power transmission direction is ensured by the laying mode of the first outer plate layer 22, the second outer plate layer 23, the third outer plate layer 24 and the fourth outer plate layer 25 in the tail door outer plate 2, and the structural strength is ensured on the basis of reducing the laying layer number.

According to the needs, the above technical schemes can be combined to achieve the best technical effect.

The foregoing is considered as illustrative only of the principles and preferred embodiments of the invention. It should be noted that, for those skilled in the art, several other modifications can be made on the basis of the principle of the present invention, and the protection scope of the present invention should be regarded.

Claims

1. The vehicle tail door is characterized by comprising a tail door inner plate and a tail door outer plate which are made of carbon fiber composite materials, wherein the tail door inner plate is connected to the inner surface of the tail door outer plate;

the tailgate outer panel comprises an outer panel decorative layer, a first outer panel layer with a first outer unidirectional tape, a second outer panel layer with a second outer unidirectional tape, a third outer panel layer with a third outer unidirectional tape and a fourth outer panel layer with a fourth outer unidirectional tape;

the outer plate decoration layer is laid on the outer side of the first outer plate layer;

the first outer plate layer is laid on the outer side of the second outer plate layer, and an included angle between the extending direction of the first outer unidirectional belt and the extending direction of the second outer unidirectional belt is 90 degrees;

the second outer plate layer is laid on the outer side of the third outer plate layer, and an included angle between the extending direction of the second outer unidirectional tape and the extending direction of the third outer unidirectional tape is 0 degree;

the third outer plate layer is laid on the outer side of the fourth outer plate layer, and the extending direction of the third outer unidirectional belt is perpendicular to the extending direction of the fourth outer unidirectional belt.

2. The vehicle tailgate according to claim 2, wherein the tailgate inner panel comprises an inner panel trim layer, a first inner panel layer comprised of a first inner unitape, a second inner panel layer comprised of a second inner unitape, a third inner panel layer comprised of a third inner unitape, a fourth inner panel layer comprised of a fourth inner unitape, a fifth inner panel layer comprised of a fifth inner unitape, a sixth inner panel layer comprised of a sixth inner unitape, and a seventh inner panel layer comprised of a seventh inner unitape;

the first inner plate layer is laid on the outer side of the inner plate decoration layer;

the second inner plate layer is laid on the outer side of the first inner plate layer, and an included angle between the extending direction of the first inner unidirectional belt and the extending direction of the second inner unidirectional belt is 45 degrees;

the third inner plate layer is laid on the outer side of the second inner plate layer, an included angle between the extending direction of the third inner unidirectional belt and the extending direction of the second inner unidirectional belt is 45 degrees, and an included angle between the third inner unidirectional belt and the extending direction of the first inner unidirectional belt is 90 degrees;

the fourth inner plate layer is laid on the outer side of the third inner plate layer, an included angle between the extending direction of the fourth inner unidirectional belt and the extending direction of the third inner unidirectional belt is 45 degrees, and an included angle between the extending direction of the fourth inner unidirectional belt and the extending direction of the second inner unidirectional belt is 90 degrees;

the fifth inner plate layer is laid on the outer side of the fourth inner plate layer, an included angle between the extending direction of the fifth inner unidirectional belt and the extending direction of the fourth inner unidirectional belt is 45 degrees, and an included angle between the fifth inner unidirectional belt and the extending direction of the third inner unidirectional belt is 0 degree;

the sixth inner plate layer is laid on the outer side of the fifth inner plate layer, an included angle between the extending direction of the sixth inner unidirectional belt and the extending direction of the fifth inner unidirectional belt is 45 degrees, and an included angle between the extending direction of the sixth inner unidirectional belt and the extending direction of the fourth inner unidirectional belt is 90 degrees;

the seventh inner plate layer is laid on the outer side of the sixth inner plate layer, an included angle between the extending direction of the seventh inner unidirectional tape and the extending direction of the sixth inner unidirectional tape is 45 degrees, and an included angle between the extending directions of the fifth inner unidirectional tape is 90 degrees.

3. The vehicle tailgate according to claim 1, further comprising a wiper mounting shell including a mounting housing and a housing cover plate;

the casing apron is connected on the tail-gate inner panel, the installation casing with casing apron is connected, the installation casing with form the installation cavity that is used for installing the windscreen wiper between the casing apron.

4. The vehicle tailgate according to claim 3, wherein the mounting housing comprises a housing base, a first protrusion and a second protrusion, the first protrusion and the second protrusion being arranged on the housing base at a spacing, the first protrusion and the second protrusion protruding in a direction away from the housing cover.

5. The vehicle tailgate according to claim 4, wherein a rib is connected between the first protrusion and the second protrusion, the rib having a concave shape.

6. The vehicle tailgate according to claim 5, wherein the reinforcing rib includes a first rib portion and two second rib portions connected to both ends of the first rib portion, respectively;

the first rib is connected with the shell base, one of the second ribs is connected with the first convex part, and the other second rib is connected with the second convex part.

7. The vehicle tailgate according to claim 6, wherein the second rib comprises a first end and a second end, a distance between the first end and the first rib being greater than a distance between the second end and the first rib;

the width of the first end portion is smaller than the width of the second end portion.

8. The vehicle tailgate according to claim 4, characterized in that a reinforcement strip is connected between the first protrusion and the housing base, the reinforcement strip being located on a side of the first protrusion remote from the second protrusion.

9. The vehicle tailgate according to claim 4, characterized in that the first protrusion is provided with a first groove opening toward the housing cover, and the second protrusion is provided with a second groove opening toward the housing cover;

reinforcing ribs are arranged in the first groove and the second groove and are in a concave shape.

10. The vehicle tailgate according to claim 4, characterized in that an extension plate extending in a direction away from the housing base is connected to an end of the housing base facing the housing cover, and a reinforcement plate is connected between the extension plate and the housing base.