CN113370768B

CN113370768B - Door base plate and door

Info

Publication number: CN113370768B
Application number: CN202110825302.2A
Authority: CN
Inventors: 李登山; 赵伟; 潘殿龙; 胡杰宏; 陈曦; 焦天培
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2023-02-21
Anticipated expiration: 2041-07-21
Also published as: CN113370768A

Abstract

The invention discloses a door substrate and a vehicle door, and belongs to the technical field of vehicle doors. The door base plate comprises a door base plate body, a vibration absorption foam plate assembly and a water retaining foam plate assembly, wherein the vibration absorption foam plate assembly comprises a soft foam plate and a plurality of mass blocks, one end of the soft foam plate is abutted against the door base plate body, the other end of the soft foam plate is abutted against a metal plate outside a vehicle door, and the mass blocks are arranged inside the soft foam plate; the water retaining foam plate component is arranged above the vibration absorption foam plate component; the water retaining foam board assembly comprises a hard foam board and a vibration reduction block, the vibration reduction block is arranged at one end of the hard foam board, one end of the vibration reduction block is abutted to the outer metal plate of the vehicle door, and the other end of the hard foam board is abutted to the door substrate body. The good sound absorption performance of the soft foam board is utilized, the mass block embedded in the soft foam board is combined to absorb the vibration, the rigidity of the surface of the metal plate outside the vehicle door is increased through the hard foam board and the vibration reduction block, and the vibration is restrained. According to the vehicle door, the door base plate is applied, so that door closing vibration sound of the vehicle door is improved.

Description

Door base plate and door

Technical Field

The invention relates to the technical field of vehicle doors, in particular to a door substrate and a vehicle door.

Background

In the automobile industry, the existing door base plate is usually a PP (polypropylene) plastic plate added with glass fiber reinforcement, the periphery of the existing door base plate is fixed on an inner metal plate of a vehicle door, and the existing door base plate is not in contact with an outer metal plate of the vehicle door, so that the door closing flutter sound cannot be improved.

In order to reduce the sheet metal fluttering sound generated when the door is closed, there are three methods commonly used in the prior art: 1. a damping rubber sheet is pasted on an outer metal plate of the vehicle door, so that kinetic energy of damping in vibration deformation is converted into internal energy, and further metal plate vibration is quickly attenuated, namely damping vibration attenuation is realized; 2. a reinforcing rubber sheet is adhered to an outer metal plate of the vehicle door to enhance the surface rigidity of the metal plate and achieve the purpose of improving modal frequency and inhibiting flutter; 3. the automobile door beam is additionally arranged on the outer metal plate of the automobile door to enhance the surface rigidity of the metal plate, the vibration damping glue is additionally arranged between the beam and the metal plate, and the vibration damping glue is utilized to convert kinetic energy into internal energy in vibration deformation, so that the metal plate vibration is quickly attenuated. Wherein, the weight of door can be increased with the reinforcement film to damping film, increases the beam and can increase manufacturing procedure again on the panel beating outside the door, increases the cost, can not satisfy user's demand.

Disclosure of Invention

An object of the present invention is to provide a door base plate which is simple in structure, light in weight, low in cost, and capable of variously improving door closing chatter.

Another object of the present invention is to provide a vehicle door, which improves door closing chatter sound by applying the door base plate.

In order to realize the purpose, the following technical scheme is provided:

in one aspect, a door substrate is provided, including a door substrate body and disposed on the door substrate body:

the vibration absorption foam board assembly comprises a flexible foam board and a plurality of mass blocks, one end of the flexible foam board is abutted against the door base board body, the other end of the flexible foam board is abutted against a metal plate outside a vehicle door, a plurality of hole cavities are formed in the flexible foam board at intervals, and the mass blocks are arranged in the hole cavities in a one-to-one correspondence mode;

the water retaining foam plate assembly is arranged above the vibration absorption foam plate assembly, and the orthographic projection of the vibration absorption foam plate assembly on the horizontal plane is overlapped with the orthographic projection of the water retaining foam plate assembly on the horizontal plane; the water retaining foam board assembly comprises a hard foam board and a vibration reduction block, wherein the vibration reduction block is arranged at one end of the hard foam board, one end of the vibration reduction block is abutted to the metal plate outside the automobile door, and the other end of the hard foam board is abutted to the door substrate body.

As an alternative of the door base plate, the distance between the mass blocks and the outer sheet metal of the vehicle door is different.

As an alternative to the door base plate, a plurality of said masses may be of different sizes.

As an alternative to the door base plate, the hard foam sheet has a hardness greater than the soft foam sheet.

As an alternative of the door base plate, the widths of the shock absorption foam plate assembly and the water retaining foam plate assembly are both larger than the distance between the door base plate body and the outer metal plate of the vehicle door.

As an alternative of the door base plate, the soft foam board comprises a first board and a second board, a first inclined plane is arranged on the first board, a second inclined plane is arranged on the second board, the first inclined plane can be spliced with the second inclined plane to form the soft foam board, and the hole cavity is formed in the first inclined plane.

As an alternative to the door base plate, the soft foam sheet is made of an open-cell type foam material;

the hard foam board is made of a closed-cell foam material.

As an alternative of the door base plate, a plurality of fixing rods are arranged on the door base plate body, wherein one part of the fixing rods are inserted in the soft foam board, and the other part of the fixing rods are inserted in the hard foam board.

As an alternative to the door base plate, both the soft foam sheet and the hard foam sheet are bonded to the door base plate body.

On the other hand, the vehicle door comprises a vehicle door inner metal plate, a vehicle door outer metal plate and the door base plate, wherein the door base plate body is fixedly arranged on the vehicle door inner metal plate, and the vibration absorption foam plate assembly and the water retaining foam plate assembly are clamped between the door base plate body and the vehicle door outer metal plate.

Compared with the prior art, the invention has the beneficial effects that:

the door base plate comprises a door base plate body, and a vibration absorption foam plate assembly and a water retaining foam plate assembly which are arranged on the door base plate body, wherein the vibration absorption foam plate assembly comprises a soft foam plate and a plurality of mass blocks; the water retaining foam plate assembly is arranged above the vibration absorption foam plate assembly, and the orthographic projection of the vibration absorption foam plate assembly on the horizontal plane is overlapped with the orthographic projection of the water retaining foam plate assembly on the horizontal plane; the water retaining foam board assembly comprises a hard foam board and a vibration reduction block, the vibration reduction block is arranged at one end of the hard foam board, one end of the vibration reduction block is abutted to the outer metal plate of the vehicle door, and the other end of the hard foam board is abutted to the door substrate body. The dynamic vibration absorber capable of absorbing vibration is formed by utilizing the good sound absorption performance of the soft foam plate and combining the mass block embedded in the soft foam plate, so that the vibration can be absorbed. In addition, the rigidity of the surface of the outer sheet metal of the automobile door is increased through the hard foam plate and the vibration reduction block, the vibration is inhibited, and the aim of improving the door closing vibration sound is further fulfilled. Through the cooperation of two kinds of cystosepiments of different hardness, not only light in weight, with low costs, simple structure moreover can improve the door closing flutter sound in many ways.

According to the vehicle door, the door base plate is applied, so that door closing vibration sound of the vehicle door is improved.

Drawings

FIG. 1 is a schematic view of a vehicle door from one perspective in an embodiment of the present invention;

FIG. 2 is a schematic view of another aspect of the door of the present invention;

FIG. 3 is a schematic structural diagram of a door substrate according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of the flexible foam board of the embodiment of the present invention divided into a first board and a second board;

FIG. 5 is a schematic structural view of a steel ball plate mold in an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a first plate after pits are machined in the first plate according to the embodiment of the present invention;

FIG. 7 is a schematic structural view of a rectangular parallelepiped soft foam board with embedded steel balls in an embodiment of the present invention.

Reference numerals:

100. a metal plate in the vehicle door;

200. an outer sheet metal of the vehicle door;

300. a door glass;

400. a door drain opening;

500. a steel ball flat plate die;

1. a door substrate body; 11. a fixing rod;

2. a shock absorbing foam plate assembly; 21. a flexible foam board; 211. a first plate; 2111. a first inclined plane; 212. a second plate; 2121. a second inclined plane; 22. a mass block;

3. a water retaining foam board assembly; 31. a rigid foam board; 32. and a vibration damping block.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that the product of the present invention is conventionally placed in use, and are only used for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As shown in fig. 1-2, the present embodiment provides a vehicle door, which includes a vehicle door inner metal plate 100, a vehicle door outer metal plate 200, and a door base plate, wherein the door base plate is located in a metal plate cavity between the vehicle door inner metal plate 100 and the vehicle door outer metal plate 200, and is fixed on the vehicle door inner metal plate 100.

Specifically, the door base plate includes door base plate body 1, inhale foam board assembly 2 and manger plate foam board assembly 3 that shakes, and door base plate body 1 sets firmly in the door on panel beating 100, inhale foam board assembly 2 and manger plate foam board assembly 3 and press from both sides and locate between door base plate body 1 and the outer panel beating 200 of door, can fix foam board assembly 2 and manger plate foam board assembly 3 that shakes on door base plate body 1 to guarantee the two rigidity, do not produce with other structures of other doors and interfere. It should be noted that, since the door glass 300 may enter the metal plate cavity between the door inner metal plate 100 and the door outer metal plate 200 when it descends, the shock-absorbing foam plate assembly 2 and the water-blocking foam plate assembly 3 need to be kept away from the movement area of the door glass 300 to avoid interference.

Further, as shown in fig. 3 and fig. 2, the shock-absorbing foam board assembly 2 includes a flexible foam board 21 and a plurality of mass blocks 22, one end of the flexible foam board 21 abuts against the door base board body 1, the other end abuts against the outer sheet metal 200 of the vehicle door, a plurality of cavities are arranged at intervals inside the flexible foam board 21, and the plurality of mass blocks 22 are arranged in the plurality of cavities in a one-to-one correspondence manner. Because the soft foam plate 21 has certain Young modulus and loss factor and good sound absorption performance, and the plurality of mass blocks 22 embedded in the soft foam plate 21 are combined, the dynamic vibration absorber capable of reducing vibration can be formed, so that the vibration can be better absorbed, and the vibration sound generated when the door is closed can be improved.

Further, the water retaining foam board assembly 3 includes a hard foam board 31 and a vibration damping block 32, the vibration damping block 32 is disposed at one end of the hard foam board 31, one end of the vibration damping block 32 abuts on the outer metal plate 200 of the vehicle door, and the other end of the hard foam board 31 abuts on the door substrate body 1. Optionally, the hard foam board 31 has a hardness greater than the soft foam board 21. The rigid foam board 31 is used for enhancing the surface rigidity of the outer sheet metal 200 of the vehicle door, so that the vibration can be inhibited, and meanwhile, the vibration attenuation block 32 can also play a role in attenuating the vibration, so that the vibration sound generated when the door is closed can be further improved. In addition, compared with the reinforcing structure of the sheet metal outside the vehicle door such as the damping film and the reinforcing film in the prior art, the hard foam plate 31 has lighter weight and lower cost. For example, the damper block 32 is made of a damping rubber pad such as a butyl rubber pad, and plays a role in damping vibration and sound.

Optionally, water may enter the cavity of the door metal plate due to electrophoresis of the automobile or lifting of the door glass 300, and the water may pass through the door substrate and then be discharged through the door drain opening 400, so as to prevent the metal plate from rusting. Set up manger plate cystosepiment subassembly 3 in the top of inhaling the cystosepiment subassembly 2 that shakes, and inhale the orthographic projection of cystosepiment subassembly 2 in the horizontal plane and overlap in the orthographic projection of manger plate cystosepiment subassembly 3 in the horizontal plane, and then usable manger plate cystosepiment plays the effect of manger plate to avoid soft cystosepiment 21 to appear damp and go mildy scheduling problem.

Optionally, the soft foam board 21 is clamped between the door base plate body 1 and the outer door metal plate 200, and in order to ensure the sound absorption effect of the shock-absorbing foam board assembly 2, the width of the shock-absorbing foam board assembly 2 can be made larger than the distance between the door base plate body 1 and the outer door metal plate 200. Illustratively, the width a of the soft foam sheet 21 is 5mm greater than the spacing between the door base plate body 1 and the door outer sheet metal 200, so that the soft foam sheet 21 is compressed and filled between the door base plate and the door outer sheet metal 200.

Optionally, in order to enhance the reinforcing effect of the water blocking foam board assembly 3 on the outer metal plate 200 of the vehicle door, the width of the water blocking foam board assembly 3 may be greater than the distance between the door base plate body 1 and the outer metal plate 200 of the vehicle door. Illustratively, the width b of the damper block 32 is about 4mm, and the width c of the hard foam sheet 31 is 3mm smaller than the distance between the door base plate body 1 and the door outer metal plate 200, so that the damper block 32 is compressed and filled between the hard foam sheet 31 and the door outer metal plate 200.

Optionally, the distances between the mass blocks 22 and the outer sheet metal 200 of the vehicle door are different, so that the mass blocks 22 are subjected to different elastic forces of the flexible foam plate 21 when vibrating, different vibration absorption frequencies are formed, and the vibration absorption effect is better. Optionally, the plurality of masses 22 are different sizes. The mass block 22 is set to have various sizes to generate different vibration absorption frequencies, so as to achieve the broadband vibration absorption effect and further improve the vibration absorption effect. Illustratively, the mass 22 may be a small mass of steel balls, aluminum balls, glass balls, steel slag, or the like.

Optionally, the door substrate body 1 is provided with a plurality of fixing rods 11, wherein a part of the fixing rods 11 is inserted into the soft foam board 21, and another part of the fixing rods 11 is inserted into the hard foam board 31. The fixing rod 11 is used for fixing the soft foam board 21 and the hard foam board 31, so that the installation is convenient. In other embodiments, the soft foam board 21 and the hard foam board 31 may be adhered to the door base plate body 1 to fix the soft foam board 21 and the hard foam board 31.

Alternatively, the soft foam sheet 21 is made of an open-cell type foam material since the open-cell type foam material has a better sound absorption effect. Illustratively, the flexible foam board 21 may be a PU (polyurethane) foam board, a melamine foam board, or the like. In addition, the flexible foam board 21 may also be an XPE (chemically cross-linked polyethylene foam) foam board to further improve the moisture-proof property.

Alternatively, the hard foam sheet 31 is made of a closed cell type foam material for the purpose of water blocking. Illustratively, the rigid foam board 31 may be EPP (polypropylene plastic foam), EPS (polystyrene foam), EPO (expanded polystyrene-polyethylene blend), or the like.

Optionally, the flexible foam board 21 includes a first board 211 and a second board 212, the first board 211 is provided with a first inclined surface 2111, the second board 212 is provided with a second inclined surface 2121, the first inclined surface 2111 can be combined with the second inclined surface 2121 to form the flexible foam board 21, and the cavities are all disposed on the first inclined surface 2111. In order to facilitate the embedding of the mass block 22 in the flexible foam board 21, the flexible foam board 21 is divided into the first board 211 and the second board 212 along a direction which is not parallel and perpendicular to the horizontal plane, a plurality of pits for placing the mass block 22 are formed on the first inclined surface 2111 of the first board 211 along the inclined direction, when the first board 211 and the second board 212 are spliced, the pits can be closed by the second inclined surface 2121 to form a closed hole cavity, and the mass block 22 is pressed by the second inclined surface 2121. First beveled surface 2111 and second beveled surface 2121 may be bonded such that first panel 211 and second panel 212 again form a unitary construction flexible foam panel 21.

Illustratively, the manufacturing steps of the door substrate are as follows:

1) Manufacturing a first plate 211 and a second plate 212 in a trapezoid block shape: placing the polyurethane material into a mould, and carrying out cavity foaming to obtain the polyurethane material with the density of about 60kg/m ³ The open-cell porosity is about 95%, and the young's modulus is about 100kPa, to form an open-cell foam board, a rectangular parallelepiped is cut out to be used as a soft foam board 21, and then the rectangular parallelepiped soft foam board 21 is obliquely cut into two trapezoidal blocks, namely a first plate 211 and a second plate 212, as shown in fig. 4;

2) Manufacturing a steel ball flat plate die 500: welding and fixing a plurality of steel balls with the diameter of about 3mm on the plane of the metal plate to form a steel ball flat plate die 500, as shown in FIG. 5;

3) And (4) forming a pit by ironing: heating the steel ball flat plate mold 500, attaching the steel ball surface to the first inclined surface 2111, and ironing a pit on the first inclined surface 2111, as shown in fig. 6;

4) Embedding steel balls: placing a steel ball in each pit, and bonding the first inclined surface 2111 with the second inclined surface 2121 to form a rectangular soft foam plate 21 embedded with the steel ball, as shown in fig. 7, namely a vibration absorption foam plate assembly 2;

5) Fixing the vibration absorption foam plate component 2: manufacturing a door substrate body 1 with a fixing rod 11, and inserting a soft foam plate 21 embedded with steel balls on the fixing rod 11 of the door substrate for fixing;

6) Fixing the water retaining foam plate component 3: the procurement density is about 40kg/m ³ The closed-cell EPP rigid foam board is cut into a cuboid as the rigid foam board 31, one end of the rigid foam board 31 is adhered with a butyl rubber pad, the other end is inserted on the door base board fixing rod 11 for fixing, and the rigid foam board 31 is arranged on the upper surface of the flexible foam board 21.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. The door substrate is characterized by comprising a door substrate body (1) and a plurality of pieces of door substrates arranged on the door substrate body (1):

the shock absorption foam board assembly (2), the shock absorption foam board assembly (2) comprises a flexible foam board (21) and a plurality of mass blocks (22), one end of the flexible foam board (21) abuts against the door base board body (1), the other end of the flexible foam board abuts against an outer metal plate (200) of the car door, a plurality of cavities are formed in the flexible foam board (21) at intervals, and the mass blocks (22) are arranged in the cavities in a one-to-one correspondence mode;

the water retaining foam plate component (3) is arranged above the vibration absorption foam plate component (2), and the orthographic projection of the vibration absorption foam plate component (2) on the horizontal plane is overlapped with the orthographic projection of the water retaining foam plate component (3) on the horizontal plane; the water retaining foam plate component (3) comprises a hard foam plate (31) and a vibration reduction block (32), the vibration reduction block (32) is arranged at one end of the hard foam plate (31), one end of the vibration reduction block (32) abuts against the outer automobile door metal plate (200), and the other end of the hard foam plate (31) abuts against the door substrate body (1);

the soft foam board (21) comprises a first board block (211) and a second board block (212), a first inclined surface (2111) is arranged on the first board block (211), a second inclined surface (2121) is arranged on the second board block (212), the first inclined surface (2111) and the second inclined surface (2121) can be spliced to form the soft foam board (21), and the hole cavities are all arranged on the first inclined surface (2111).

2. A door baseplate according to claim 1, wherein the spacing between the plurality of masses (22) and the door outer sheet metal (200) is different.

3. A door baseplate according to claim 2, wherein the masses (22) are of different sizes.

4. A door base plate according to claim 1, characterized in that the hard foam plate (31) has a hardness greater than the soft foam plate (21).

5. The door base plate according to claim 1, characterized in that the width of the shock-absorbing foam plate assembly (2) and the water-retaining foam plate assembly (3) are both greater than the distance between the door base plate body (1) and the door outer sheet metal (200).

6. The door base plate according to claim 1, wherein the flexible foam sheet (21) is made of an open cell type foaming material;

the hard foam board (31) is made of closed-cell foam materials.

7. The door base according to any one of claims 1 to 6, wherein a plurality of fixing rods (11) are provided on the door base body (1), wherein a portion of the fixing rods (11) are inserted into the soft foam board (21) and another portion of the fixing rods (11) are inserted into the hard foam board (31).

8. A door base plate according to any one of claims 1-6, characterized in that the soft foam sheet (21) and the hard foam sheet (31) are both glued to the door base plate body (1).

9. A vehicle door is characterized by comprising a vehicle door inner metal plate (100), a vehicle door outer metal plate (200) and the door base plate according to any one of claims 1 to 8, wherein the door base plate body (1) is fixedly arranged on the vehicle door inner metal plate (100), and the shock absorption foam plate component (2) and the water retaining foam plate component (3) are clamped between the door base plate body (1) and the vehicle door outer metal plate (200).