Automobile door protection plate sound-absorbing cotton hooking structure and method and automobile

Abstract

The invention belongs to the technical field of automobile sound insulation, and provides an automobile door protection plate sound absorption cotton hooking structure and method and an automobile, and a hooking piece comprises a sound absorption cotton plate, a door protection plate and a hooking piece body; a plurality of positioning points are arranged on the surface of the sound-absorbing cotton plate; one end of the hanging piece is connected with the door protection plate, and the other end penetrates through the positioning point and is detachably connected with the sound-absorbing cotton; the sound-absorbing cotton plate is installed on the surface, facing the interior of the automobile, of the door protection plate. The combined design of the sound-absorbing cotton plate, the door protection plate and the hanging piece is arranged, the structure does not need to depend on welding equipment or glue, the extra cost of equipment purchase and glue material consumption is saved, meanwhile, the time-consuming links of welding parameter debugging and glue curing waiting are avoided, the assembly working hours are greatly shortened, and the assembly efficiency is improved. The technical problems that a traditional fixing mode is high in production input and low in efficiency are solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of automobile sound insulation, and particularly relates to a hanging structure and method of sound-absorbing cotton of an automobile door guard plate and an automobile. BACKGROUND

[0002] In the field of automobile interior noise reduction, the sound-absorbing cotton at the door guard plate is a key component for reducing the noise in the vehicle and improving the comfort of driving and riding, and the fixing manner directly affects the production efficiency, use cost and environmental performance of the automobile. As shown in the drawing, the conventional sound-absorbing cotton assembly scheme in the industry generally adopts two ways of welding fixation or pasting fixation, for example, the sound-absorbing cotton is first welded to the door guard plate body by a welding device, or the sound-absorbing cotton is pasted on the surface of the door guard plate body by applying glue, and then the complete door guard plate-sound-absorbing cotton assembly is assembled on the door guard plate sheet metal. Figure 1

[0003] However, the traditional fixing manner has many technical defects, specifically as follows: 1. The welding fixation needs to configure professional welding equipment, and the pasting fixation needs to purchase special glue, both of which need to additionally invest in equipment or consumable costs; at the same time, the welding operation needs to adjust the equipment parameters, and the pasting operation needs to wait for the glue to solidify, both of which prolong the production time and reduce the assembly efficiency.

[0004] 2. The glue used in the pasting fixation contains volatile organic compounds (VOC), which is easy to release slowly during the production and later use of the automobile, not only increasing the odor in the vehicle and affecting the driving experience, but also possibly causing potential harm to human health.

[0005] 3. Whether welding or pasting fixation, the sound-absorbing cotton and the door guard plate body form a non-detachable or difficult-to-detachable connection structure, when the sound-absorbing cotton needs to be replaced due to aging or damage after long-term use, the door guard plate body or the sound-absorbing cotton itself is easy to be damaged during disassembly, resulting in the need to replace multiple components at the same time, increasing the maintenance cost in the later period; at the same time, the disassembly operation needs to use professional tools, which is complicated and further reduces the maintenance efficiency. SUMMARY

[0006] In order to solve the problems in the background art, the application discloses a hanging structure and method of sound-absorbing cotton of an automobile door guard plate and an automobile, which aims to solve the technical problems of inconvenient installation and disassembly, poor fixing stability and easy falling off of the traditional sound-absorbing cotton of the automobile door guard plate, and at the same time, optimizes the assembly efficiency and use reliability of the sound-absorbing cotton, and provides an efficient solution for automobile interior noise reduction.

[0007] In order to achieve the above-mentioned purpose, the application adopts the following technical scheme: ​The application provides an automobile door guard plate sound-absorbing cotton hanging structure, which comprises a sound-absorbing cotton plate, a door guard plate and a hanging piece. The sound-absorbing cotton plate is provided with a plurality of positioning points on the surface. One end of the hanging piece is connected with the door guard plate, and the other end is detachably connected with the sound-absorbing cotton through the positioning points. The sound-absorbing cotton plate is installed on the surface of the door guard plate facing the automobile interior.

[0008] Further, the hanging piece comprises a hanging disc and a hanging column. One end of the hanging column is fixedly connected with the door guard plate, and the other end is connected with the hanging disc through the positioning points. After the hanging column passes through the positioning points, the hanging disc abuts against and limits the surface of the sound-absorbing cotton plate away from the door guard plate.

[0009] Further, the hanging column and the door guard plate are integrally injection molded.

[0010] Further, a hanging groove is formed in the end of the hanging disc, and the hanging groove extends to the inside of the hanging column, so that the hanging column has elasticity along the radial direction of the hanging groove.

[0011] Further, the hanging column has an inclination along the direction perpendicular to the sound-absorbing cotton plate.

[0012] Further, the sound-absorbing cotton plate is of a polygonal structure, and the positioning points are arranged at the corners of the polygonal structure.

[0013] Further, a slit structure in the shape of a Chinese character 'yi', a Chinese character 'T' or a Chinese character'shi' is formed at the positioning points.

[0014] Further, a through hole is formed at the positioning points.

[0015] The application also provides an automobile door guard plate sound-absorbing cotton hanging method for the automobile door guard plate sound-absorbing cotton hanging structure. The positioning points of the sound-absorbing cotton plate are corresponded to the hanging piece, so that the sound-absorbing cotton plate and the surface of the door guard plate facing the automobile interior are kept parallel and preattached; Pressure is applied along the direction perpendicular to the door guard plate, so that the hanging piece passes through the positioning points and limits the freedom of the sound-absorbing cotton plate along the direction away from the door guard plate.

[0016] The application also provides an automobile provided with the automobile door guard plate sound-absorbing cotton hanging structure.

[0017] The application has the following beneficial effects: 1. The application sets up the combination design of sound-absorbing cotton board, door guard plate and hanging piece, which does not need to rely on welding equipment or glue, saves the additional cost of equipment purchase and glue consumables, avoids the time-consuming links of welding parameter debugging and glue curing waiting, greatly shortens the assembly time, and solves the technical pain points of high production investment and low efficiency of traditional fixing methods; 2. The application does not need to use VOC-containing glue, eliminates the possibility of releasing volatile organic compounds, avoids the influence of increased odor in the vehicle on the driving experience, eliminates the potential harm of VOC to human health as much as possible, and effectively solves the problems of poor environmental protection and large safety hazards existing in the traditional pasting fixing method; 3. The hanging piece and the sound-absorbing cotton board are designed to be detachably connected. When the sound-absorbing cotton board is aged or damaged, professional tools are not needed, and the sound-absorbing cotton board can be disassembled only by separating the hanging piece and the positioning point. The disassembly process will not damage the door guard plate or the sound-absorbing cotton board itself, avoiding the problem of "simultaneous replacement of multiple components" in the traditional welding / pasting method. At the same time, the new sound-absorbing cotton board can be assembled through the quick docking of the positioning point and the hanging piece, which significantly improves the maintenance efficiency, greatly reduces the later maintenance cost, and completely solves the pain points of poor maintenance convenience and high cost of the traditional fixing method.

[0018] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present application. The objects and other advantages of the present application can be achieved and obtained by the structures indicated in the specification and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0020] Figure 1 A schematic diagram of a sound-absorbing cotton hanging structure of a car door guard plate of the present application is shown; Figure 2 A structural schematic diagram of a sound-absorbing cotton board of the present application is shown; Figure 3 A schematic diagram of a hanging piece of the present application is shown; Figure 4 A schematic diagram of the assembled hanging rack structure of the present application is shown; Figure 5 A flowchart of a sound-absorbing cotton hanging method of a car door guard plate of the present application is shown.

[0021] In the figure: 1, sound-absorbing cotton board; 2, door trim panel; 3, positioning point; 4, hanging plate; 5, hanging column; 6, hanging groove. Specific embodiments

[0022] To make the objectives, 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 in conjunction with the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] As Figure 1 shown, a hanging structure for the sound-absorbing cotton of an automobile door trim panel mainly consists of a sound-absorbing cotton board 1, a door trim panel 2, and a hanging member. The sound-absorbing cotton board 1 is assembled on the surface of the door trim panel 2 facing the interior of the automobile, and the detachable fixation of the two is achieved through the hanging member, which not only ensures the assembly tightness but also facilitates the later maintenance or replacement of the sound-absorbing cotton board 1, effectively reducing the maintenance cost.

[0024] As Figure 2 shown, the sound-absorbing cotton board 1 adopts a polygonal structure, and a number of positioning points 3 are provided on its surface. The positioning points 3 are preferably arranged at the edges of the polygonal structure. This design can utilize the force stability of the edges to make the cooperation between the hanging member and the positioning points 3 more accurate, avoiding the displacement of the sound-absorbing cotton board 1 due to vibration during the driving of the automobile, and significantly improving the fixing reliability; at the same time, the positioning points 3 at the edges can cover the entire sound-absorbing cotton board 1 as much as possible to avoid the situation of local warping of the sound-absorbing cotton board 1.

[0025] Optionally, the positioning point 3 has two preferred structural forms: one is a slit structure in the shape of "one", "T", or "ten", and the other is a through-hole structure; both structures can adapt to the insertion and fixation of the hanging member, and the slit structure can adapt to different sizes of hanging components through its own elasticity, while the through-hole structure facilitates the quick penetration of the hanging member, further improving the assembly flexibility. Exemplarily, in Figure 2 , a slit structure in the shape of "one" is adopted at the positioning point 3.

[0026] As Figure 3 shown, as a connecting component, one end of the hanging member is connected to the door trim panel 2, and the other end passes through the positioning point 3 to be detachably connected to the sound-absorbing cotton board 1. It specifically includes a hanging plate 4 and a hanging column 5. The design and effects of each component are as follows: The one end of the hanging column 5 is fixedly connected with the door guard plate 2 by using an integral injection molding process, the molding mode can ensure the connection strength of the hanging column 5 and the door guard plate 2, avoids the falling risk existing in the traditional welding or bonding mode, simultaneously simplifies the production process and reduces the manufacturing cost; along the direction perpendicular to the sound-absorbing cotton plate 1, the hanging column 5 has a slope design, the slope can form a guiding effect, so that the hanging column 5 is more smooth when passing through the positioning point 3, the assembly resistance is reduced, and the assembly efficiency is improved.

[0027] As shown in Figure 4 The end of the hanging disc 4 is provided with a hanging groove 6 extending into the inside of the hanging column 5, the hanging groove 6 makes the hanging column 5 have elasticity along the radial direction, and the wall thickness of the hanging column 5 can be thinned, so that the shrinkage problem of the injection molding part in the injection molding process is solved. When the hanging column 5 passes through the positioning point 3, the hanging column 5 can be adapted to the hole diameter or gap width of the positioning point 3 by radial elastic contraction, and is elastically reset after smoothly passing through, at this time, the hanging disc 4 abuts against the surface of the sound-absorbing cotton plate 1 away from the door guard plate 2 and forms a limit, effectively limiting the freedom of the sound-absorbing cotton plate 1 in the direction away from the door guard plate 2, avoiding the sound-absorbing cotton plate 1 from falling, and the elastic structure can buffer the vibration in the driving of the automobile and reduce the generation of abnormal sound.

[0028] The working principle of the present application is as follows: When positioning, the positioning point 3 of the sound-absorbing cotton plate 1 corresponds to the hanging part (the hanging column 5), and by using the arrangement advantage of the positioning point 3 at the corner, it is ensured that the surface of the sound-absorbing cotton plate 1 and the door guard plate 2 towards the inside of the automobile remains parallel and pre-pasted; When installing, when pressure is applied in the direction perpendicular to the door guard plate 2, the slope design of the hanging column 5 plays a guiding role, and the radial elasticity of the hanging column 5 is given by cooperating with the hanging groove 6, so that the hanging column 5 smoothly passes through the positioning point 3 (gap structure or through-hole structure), at this time, the sound-absorbing cotton plate 1 is closely attached to the door guard plate 2, and the sound-absorbing effect is guaranteed; After positioning, the elastically reset hanging column 5 cooperates with the hanging disc 4 to form a cooperative limiting, the hanging disc 4 closely abuts against the surface of the sound-absorbing cotton plate 1 away from the door guard plate 2, and limits the movement of the surface in the direction away from the door guard plate 2, and at the same time, the positioning point 3 cooperates with the hanging part to limit the horizontal displacement of the sound-absorbing cotton plate 1, finally realizes the stable fixation of the sound-absorbing cotton plate 1, and the whole process does not need additional fasteners, the structure is simple and the stress is uniform.

[0029] When disassembling, a uniform pulling force is applied in a direction away from the door guard plate 2 (without the need for professional tools), under the action of the pulling force, the hanging disc 4 drives the hanging column 5 to move outward, the hanging column 5 is elastically contracted in the radial direction due to the existence of the hanging groove 6, the cross-sectional size is reduced, and can be smoothly detached from the positioning point 3 (slit structure or through-hole structure); if the positioning point 3 is a slit structure, its elasticity will also adaptively expand with the detachment of the hanging column 5, further reducing the disassembly resistance, realizing the rapid separation of the sound-absorbing cotton board 1, and without damage to the sound-absorbing cotton board 1, the door guard plate 2 and the hanging part during the disassembly process, protecting the reusable parts and reducing maintenance costs.

[0030] As shown in Figure 5 Based on the above structure and working principle, the application provides a hanging method, the steps are as follows: S1: The positioning point 3 of the sound-absorbing cotton board 1 is correspondingly matched with the hanging part (hanging column 5) on the door guard plate 2, the position of the sound-absorbing cotton board 1 is adjusted, so that it is parallelly pre-assembled with the surface of the door guard plate 2 facing the inside of the automobile, and the alignment of the positioning point 3 and the hanging column 5 is ensured.

[0031] S2: A uniform pressure is applied to the sound-absorbing cotton board 1 in a direction perpendicular to the door guard plate 2, and the sound-absorbing cotton board 1 is smoothly passed through the positioning point 3 by means of the slope guidance and radial elasticity of the hanging column 5, until the hanging disc 4 abuts against the back surface of the sound-absorbing cotton board 1, at this time the freedom of the sound-absorbing cotton board 1 in the direction away from the door guard plate 2 is limited, and the stable assembly is completed.

[0032] It should be noted that the above method does not require professional tools, and the assembly efficiency is improved by more than 30% compared with the traditional method, and when disassembling, only a pulling force in the opposite direction is needed to make the hanging column 5 elastically contract, so that the sound-absorbing cotton board 1 can be quickly disassembled.

[0033] The application also discloses an automobile provided with the above-mentioned sound-absorbing cotton hanging structure for the door guard plate of the automobile. By assembling the structure at the door guard plate 2 of the automobile, the noise reduction effect of the interior decoration of the automobile can be achieved by means of the sound-absorbing cotton board 1, the riding comfort is improved, the sound-absorbing cotton board 1 can be prevented from falling off by the stable hanging design, the service life is prolonged, the assembly process in the production process of the automobile is simplified, the manufacturing cost of the automobile is reduced, and the application value is wide.

[0034] Although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the application.

Claims

1. A sound absorbing cotton hanging structure for an automobile door guard, characterized by, It includes a sound-absorbing cotton board (1), a door trim panel (2) and a hanging member; A number of positioning points (3) are provided on the surface of the sound-absorbing cotton board (1); One end of the hanging member is connected to the door trim panel (2), and the other end passes through the positioning point (3) and is detachably connected to the sound-absorbing cotton (1); The sound-absorbing cotton board (1) is installed on the surface of the door trim panel (2) facing the interior of the vehicle.

2. The sound-absorbing cotton hanging structure of the automobile door guard according to claim 1, characterized in that, The hanging member includes a hanging disc (4) and a hanging column (5); One end of the hanging column (5) is fixedly connected to the door trim panel (2), and the other end passes through the positioning point (3) and is connected to the hanging disc (4); After the hanging column (5) passes through the positioning point (3), the hanging disc (4) abuts against and limits one surface of the sound-absorbing cotton board (1)背离门护板(2)的一表面抵接并限位。 3. The sound-absorbing cotton hanging structure of the automobile door guard according to claim 2, characterized in that, The hanging column (5) is integrally injection-molded with the door trim panel (2).

4. The sound-absorbing cotton hanging structure of the automobile door guard according to claim 2, characterized in that, A hanging groove (6) is formed at the end of the hanging disc (4), and the hanging groove (6) extends into the interior of the hanging column (5), so that the hanging column (5) has elasticity along the radial direction of the hanging groove (6).

5. The sound-absorbing cotton hanging structure of the automobile door guard according to claim 2, characterized in that, Along the direction perpendicular to the sound-absorbing cotton board (1), the hanging column (5) has a slope.

6. The sound-absorbing cotton hanging structure of the automobile door guard according to claim 1, characterized in that, The sound-absorbing cotton board (1) is of a polygonal structure, and the positioning points (3) are provided at the edges of the polygonal structure.

7. The sound-absorbing cotton hanging structure of the automobile door guard according to claim 1 or 6, characterized in that, A slit structure in the shape of "one", "T" or "cross" is formed at the positioning point (3).

8. The sound-absorbing cotton hanging structure of the automobile door guard according to claim 1 or 6, characterized in that, A through hole is formed at the positioning point (3).

9. A method for hanging the sound-absorbing cotton of the automobile door guard plate, which is used for the sound-absorbing cotton hanging structure of the automobile door guard plate according to any one of claims 1-8, characterized in that, It includes the following steps: Align the positioning points (3) of the sound-absorbing cotton board (1) with the hanging member, and keep the sound-absorbing cotton board (1) and the surface of the door trim panel (2) facing the interior of the vehicle parallel and pre-fitted; Apply pressure along the direction perpendicular to the door trim panel (2) to make the hanging member pass through the positioning point (3) and limit the freedom degree of the sound-absorbing cotton board (1) in the direction away from the door trim panel (2).

10. An automobile characterized by comprising: An automobile door trim panel sound-absorbing cotton hanging structure according to any one of claims 1-8 is installed.

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