Defrosting air duct structure of door trim part and mounting method

Abstract

The invention relates to the technical field of automotive upholstery, in particular to a door trim defrosting air duct structure and a mounting method. The defrosting air duct structure comprises an air duct body, a defrosting air opening grid and a defrosting rubber sleeve. The air duct body is fixedly installed in the door ornament, an air inlet is formed in the front end of the air duct body, an air outlet is formed in the upper end of the air duct body, and the defrosting air opening grid is arranged at the air outlet in the upper end of the air duct body; the defrosting rubber sleeve comprises a rubber ring framework and a sealing rubber ring, the rubber ring framework is installed on the door ornament, one end of the rubber ring framework is communicated with the air inlet of the air duct body, the other end of the rubber ring framework is connected with the sealing rubber ring, the sealing rubber ring is located at the front end of the door ornament, and the sealing rubber ring is in butt joint with the air outlet of the instrument board side end cover when the automobile door is closed. The problems that in the prior art, the air volume loss of a defrosting air duct is large, the requirement for the inner side installation space of a door ornament is high, and the appearance is affected are solved, and the better side window defrosting effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive interior parts, and particularly to a defrosting air duct structure and installation method for a door trim part. Background Art

[0002] During the use of an automobile, to ensure clear driving vision, the window needs to be defrosted and demisted through a defrosting system. As a key part of the defrosting system, the defrosting air duct of the door trim part directly affects the defrosting effect, appearance design, and internal structure layout. It is installed inside the side door trim part of the automobile, and through a specific structure, the hot air from the heating system is blown towards the side window to achieve the defrosting function, and at the same time, the coordination with the overall design of the automotive interior needs to be considered.

[0003] Currently, the layout method of the defrosting air duct for automotive door trim parts on the market is as follows: the air inlet of the air duct is arranged at the joint of the door trim part and the side end cover of the instrument panel in the Y direction (i.e., the horizontal direction on the inner side of the door), and the air outlet is located in the Z direction (i.e., the vertical direction) area of the upper body of the door trim part near the rearview mirror. During operation, after the air flow enters the air duct along the Y direction from the side end cover of the instrument panel, it needs to make a sharp turn in the Z direction in a narrow space and then be transmitted to the air outlet grille, and finally blown towards the surface of the side window.

[0004] The above defrosting air duct has the following technical problems:

[0005] ① The air duct needs to be arranged along the Y direction inside the door trim part, which requires a large space inside the door trim part, restricts the layout and design of other components inside the door trim part, increases the layout difficulty, and is difficult to adapt to the design of a compact door.

[0006] ② After the air flow flows into the door trim part from the Y direction of the instrument side end cover, it needs to make a sharp turn from the Y direction to the Z direction. During the air flow transmission process, the pressure drop is large, the air volume loss is large, and the designed length of the air duct is long, resulting in a further increase in the air volume loss, affecting the defrosting effect.

[0007] ③ The air inlet of the air duct is arranged on the Y - direction panel of the side door trim panel. When the door is open, the sealing rubber ring of the air inlet leaks out, affecting the overall aesthetic appearance of the door panel. Summary of the Invention

[0008] Aiming at the deficiencies of the existing technology, the purpose of the embodiments of the present invention is to provide a defrosting air duct structure for a door trim part, so as to solve the problems of large air volume loss, high requirement for the installation space inside the door trim part, and affecting the appearance in the existing technology, and achieve a better defrosting effect for the side window.

[0009] To achieve the above purpose, the embodiments of the present invention provide the following technical solutions:

[0010] A defrosting air duct structure for a door trim member, comprising: an air duct body, a defrosting air outlet grille, and a defrosting rubber sleeve; the air duct body is fixedly installed inside the door trim member, an air inlet is provided at the front end of the air duct body, and an air outlet is provided at the upper end. The defrosting air outlet grille is arranged at the air outlet at the upper end of the air duct body; the defrosting rubber sleeve includes a rubber ring skeleton and a sealing rubber ring. The rubber ring skeleton is installed on the door trim member. One end of the rubber ring skeleton is communicated with the air inlet of the air duct body, and the other end is connected to the sealing rubber ring. The sealing rubber ring is located at the front end of the door trim member, and when the vehicle door is closed, the sealing rubber ring is butted against the air outlet of the instrument panel side cover.

[0011] Optionally, the defrosting rubber sleeve further includes an air inlet sponge. The inner end of the rubber ring skeleton is embedded in the air inlet of the air duct body, and the air inlet sponge is installed between the rubber ring skeleton and the air duct body.

[0012] Optionally, the cross-section of the air duct body is a circular air duct structure, and the air duct body gradually bends upward along the air flow direction.

[0013] Optionally, the air duct body has two air outlets, and there are two defrosting air outlet grilles. One defrosting air outlet grille is arranged at the end of the air duct body, and the other is arranged near the air inlet of the air duct body.

[0014] Optionally, the two defrosting air outlet grilles include a first air outlet grille and a first air outlet sponge near the air inlet of the air duct body, and a second air outlet grille and a second air outlet sponge at the end of the air duct body.

[0015] Optionally, the door trim member includes a door trim member body and an upper door trim member installation part. The air duct body is located inside the door trim member body. The first air outlet sponge is installed on the first air outlet grille, and the first air outlet grille is snapped onto the upper door trim member installation part. The second air outlet sponge is installed on the second air outlet grille, and the second air outlet grille is snapped onto the upper door trim member installation part.

[0016] Optionally, a mounting plate is provided on the outer wall of the air duct body, and the mounting plate is detachably connected to the door trim member body.

[0017] Optionally, the mounting plate includes an upper mounting plate and a lower mounting plate. The upper mounting plate is located on the upper side of the air duct body and between the two air outlets. The lower mounting plate is located on the lower side of the air duct body, and there are two lower mounting plates. The two lower mounting plates are respectively located on both sides of the upper mounting plate in the air flow direction.

[0018] Optionally, mounting holes are provided on the mounting plate, and the air duct body is installed on the door trim plate body by screws passing through the mounting holes of the mounting plate.

[0019] An embodiment of the present invention also provides an installation method for the defrosting air duct structure of the door trim member as described above, including the following steps:

[0020] Install the duct body into the door trim;

[0021] Install the sealing rubber sleeve to one end of the rubber ring frame, and install the air inlet sponge to the other end of the rubber ring frame;

[0022] Install the rubber ring frame onto the door trim, and insert one end of the air inlet sponge into the air inlet of the air duct body;

[0023] Install the air outlet sponge on the air outlet grille, then clip the air outlet grille to the door trim and install it, with one end of the installed air outlet sponge extending into the air duct body.

[0024] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0025] The air duct body is fixed inside the door trim, with an air inlet at the front end and an air outlet at the upper end, forming a ventilation path extending upward from the front end of the door trim. The defrost rubber sleeve connects the air duct body and the door trim through a rubber ring frame. The sealing rubber ring is arranged at the X-direction position of the front end of the door trim. When the door is closed, it has an interference fit with the air outlet of the end cover on the dashboard to achieve sealing. This structure optimizes the position of the air inlet and the direction of the air duct, shortens the airflow path, reduces sharp turns from the Y direction to the Z direction, reduces air volume loss, and will not be directly in the main viewing area when the door is open, which can better ensure the appearance integrity of the door trim and also reduce the space requirements inside the door trim.

[0026] Advantages of additional aspects of the present invention will be given in the following description, and in part will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In addition, the spacing or size between the components is exaggerated to show the positions of the components, and the schematic diagram is only used for illustration.

[0028] Figure 1 is a schematic diagram of a disassembled defrost air duct structure provided by an embodiment of the present invention;

[0029] Figure 2 is a schematic diagram of a defrost air duct structure provided by an embodiment of the present invention installed on a door trim;

[0030] Figure 3 is a schematic diagram of a first cross-section of a defrost air duct structure provided by an embodiment of the present invention;

[0031] Figure 4 It is a schematic diagram of the second cross-sectional view of the defrost air duct structure provided by the embodiment of the present invention;

[0032] Figure 5 It is an installation schematic diagram of the defrost air duct structure provided by the embodiment of the present invention;

[0033] In the figure: 1. Sealing rubber ring; 2. Sponge at the air inlet; 3. First air outlet grille; 4. Second air outlet grille; 5. Rubber ring skeleton; 6. Air duct body; 7. First air outlet sponge; 8. Second air outlet sponge; 9. Upper part of the door trim; 10. Door trim body; 11. Screw; Detailed implementation mode

[0034] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. In addition, it should also be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0035] Embodiment 1

[0036] As Figure 1 、 Figure 2 shown, this embodiment proposes a defrost air duct structure for a door trim, including: an air duct body 6, a defrost air outlet grille, and a defrost rubber sleeve; the air duct body 6 is fixedly installed inside the door trim, the front end of the air duct body 6 is provided with an air inlet, and the upper end is provided with an air outlet. The defrost air outlet grille is arranged at the air outlet at the upper end of the air duct body 6; the defrost rubber sleeve includes a rubber ring skeleton 5 and a sealing rubber ring 1. The rubber ring skeleton 5 is installed on the door trim. One end of the rubber ring skeleton 5 is communicated with the air inlet of the air duct body 6, and the other end is connected to the sealing rubber ring 1. The sealing rubber ring 1 is located at the front end of the door trim, and when the car door is closed, the sealing rubber ring 1 is in interference fit with the air outlet of the instrument panel side end cover to achieve a sealing effect and ensure ventilation.

[0037] The air inlet of this defrost air duct structure is arranged at the front end (X end) of the door trim panel, and the air outlet is located at the upper end of the upper installation body. The ventilation trend is gentle, the ventilation distance is short, and the air volume loss is small, which can achieve a better defrosting and defogging effect. Compared with the air inlet arranged on the inner panel (Y direction) of the door trim, in this air inlet arrangement scheme, it will not be directly in the main viewing area when the door is open, which can better ensure the appearance integrity of the door trim and reduce the requirements for the inner space of the door trim.

[0038] The defrosting rubber sleeve further includes an air inlet sponge 2. The inner end of the rubber ring skeleton 5 is embedded in the air inlet of the air duct body 6, and the air inlet sponge 2 is installed between the rubber ring skeleton 5 and the air duct body 6. The function of the air inlet sponge 2 is to fill the gap between the two, ensure that the air flow can flow smoothly and sufficiently when entering the air duct, and at the same time play a certain sealing role to prevent air leakage, ensuring the airtightness of the defrosting system and the stability of the defrosting effect.

[0039] As Figure 1 , Figure 4 shown, the cross-section of the air duct body 6 is a circular air duct structure, and the air duct body 6 gradually bends upward along the air flow direction. The circular air duct structure is conducive to the smooth flow of the air flow, reducing the resistance and eddy current phenomenon of the air flow during the flow process, thereby reducing the air volume loss. The design that the air duct body 6 gradually bends upward along the air flow direction makes the air flow direction in the air duct more in line with the principle of fluid mechanics, further optimizing the air flow path, improving the defrosting efficiency, and at the same time providing a more reasonable space utilization plan for the layout of the air duct in the door trim.

[0040] The air duct body 6 has two air outlets, and there are two defrosting air outlet grilles. One defrosting air outlet grille is arranged at the end of the air duct body 6, and the other is arranged near the air inlet of the air duct body 6. This double-air-outlet design can make the defrosting air flow more evenly distributed in the defrosting area of the door trim, improving the defrosting coverage and effect. Especially for larger-sized door trims or scenarios with higher defrosting requirements, it can better meet the defrosting needs and ensure the comprehensiveness and efficiency of defrosting.

[0041] The two defrosting air outlet grilles include a first air outlet grille 3 and a first air outlet sponge 7 near the air inlet of the air duct body 6, and a second air outlet grille 4 and a second air outlet sponge 8 at the end of the air duct body 6.

[0042] The first air outlet grille 3 and the first air outlet sponge 7 are close to the air inlet, enabling a part of the air flow to be quickly discharged from the position near the air inlet after entering the air duct, for quickly defrosting the front area of the door trim; the second air outlet grille 4 and the second air outlet sponge 8 are located at the end of the air duct, enabling another part of the air flow to be discharged from the end after a longer path, for defrosting the rear area of the door trim.

[0043] As Figure 2 shown, the door trim includes a door trim body 10 and a door trim upper installation 9 on the upper side. The air duct body 6 is located inside the door trim body 10. The first air outlet sponge 7 is installed on the first air outlet grille 3, the first air outlet grille 3 is clamped to the door trim upper installation 9, the second air outlet sponge 8 is installed on the second air outlet grille 4, and the second air outlet grille 4 is clamped to the door trim upper installation 9.

[0044] This installation method enables the air outlet grille and the air outlet sponge to be firmly fixed on the door trim 9, while matching the air flow path in the air duct body 6 to ensure that the air flow can smoothly discharge from the air outlet grille, achieving a good defrosting effect. In addition, the snap-in installation method facilitates the disassembly and maintenance of components, improving the maintainability and replaceability of the product.

[0045] As Figure 1 shown, an installation plate is provided on the outer wall of the air duct body 6, and the installation plate is detachably connected to the door trim body 10. The air duct body 6 can be firmly installed on the door trim body 10 through the installation plate, ensuring the stability of the air duct during vehicle driving and avoiding the displacement or loosening of the air duct caused by vibration or collision. At the same time, the detachable connection method facilitates the disassembly and replacement of the air duct body 6 when needed, improving the maintenance convenience and service life of the product.

[0046] The installation plate includes an upper installation plate and a lower installation plate. The upper installation plate is located on the upper side of the air duct body 6 and between two air outlets. The lower installation plate is located on the lower side of the air duct body 6, and there are two lower installation plates, which are respectively located on both sides of the upper installation plate in the air flow direction. This layout enables the installation plate to support and fix the air duct body 6 from different positions, forming a stable frame structure and further enhancing the installation stability of the air duct body 6 within the door trim.

[0047] As Figure 3 、 Figure 4 shown, installation holes are provided on the installation plate, and the air duct body 6 is installed onto the door trim body through the installation holes of the installation plate by screws 11. Sufficient fixing force is provided by the screws 11 to ensure the firm installation of the air duct body 6 within the door trim. At the same time, the screw 11 connection is convenient for disassembly and reinstallation, providing convenience for the repair and replacement of the product. Further, the installation holes can be designed as waist-shaped holes, allowing for fine adjustment of the position during the connection of the screws 11 to compensate for the manufacturing tolerances between the door trim body 10 and the air duct body 6.

[0048] Embodiment 2

[0049] This embodiment provides an installation method for the door trim defrosting air duct structure as described in Embodiment 1, including the following steps:

[0050] As Figure 5 shown, first, the air duct body 6 is installed into the door trim, and multiple installation points are fixed with screws 11, which is the basis of the entire installation process;

[0051] Then, the sealing rubber sleeve is installed at one end of the rubber ring skeleton 5, and the air inlet sponge 2 is installed at the other end of the rubber ring skeleton 5 to complete the assembly of the defrosting rubber sleeve;

[0052] Then install the rubber ring skeleton 5 on the door trim panel, ensuring that one end of the air inlet sponge 2 extends into the air inlet of the air duct body 6, thus realizing the connection between the air duct and the air inlet;

[0053] Finally, install the air outlet sponge on the air outlet grille, and then snap the air outlet grille onto the door trim part 9, so that one end of the air outlet sponge extends into the air duct body 6, completing the installation of the air outlet part. Ensure that the defrosting air duct structure can be accurately and firmly installed in the door trim part, the connection between components is tight, and the air flow path is unobstructed, so as to achieve a good defrosting effect. At the same time, this installation method is simple to operate and easy to implement, improving production efficiency and product quality.

[0054] Although the specific implementation manners of the present invention are described above in conjunction with the accompanying drawings, it is not a limitation on the protection scope of the present invention. Those skilled in the art should understand that, based on the technical solutions of the present invention, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the protection scope of the present invention.

Claims

1. A defrosting air duct structure for a door trim, characterized in that: include: Air duct body, defrost air outlet grille and defrost rubber sleeve; The air duct body is fixedly installed in the door trim, an air inlet is arranged at the front end of the air duct body, an air outlet is arranged at the upper end, and the defrost air outlet grille is arranged at the air outlet at the upper end of the air duct body; The defrost rubber sleeve includes a rubber ring frame and a sealing rubber ring. The rubber ring frame is installed on the door trim. One end of the rubber ring frame is connected to the air inlet of the air duct body, and the other end is connected to the sealing rubber ring. The sealing rubber ring is located at the front end of the door trim, and when the car door is closed, the sealing rubber ring is connected to the air outlet of the side end cover of the dashboard.

2. The door trim defrosting air duct structure according to claim 1, characterized in that: The defrost rubber sleeve also includes an air inlet sponge, the inner end of the rubber ring frame is embedded in the air inlet of the air duct body, and the air inlet sponge is installed between the rubber ring frame and the air duct body.

3. The door trim defrosting air duct structure according to claim 1, characterized in that: The cross section of the air duct body is a circular air duct structure, and the air duct body gradually bends upward along the air flow direction.

4. The door trim defrosting air duct structure according to claim 3, characterized in that: The air duct body has two air outlets, and the defrost air outlet grilles have two, one defrost air outlet grille is arranged at the end of the air duct body, and the other is arranged near the air inlet of the air duct body.

5. The door trim defrosting air duct structure according to claim 4, characterized in that: The two defrost air outlet grilles include a first air outlet grille and a first air outlet sponge located near the air inlet of the air duct body, and a second air outlet grille and a second air outlet sponge located at the end of the air duct body.

6. The door trim defrosting air duct structure according to claim 5, characterized in that: The door trim includes a door trim body and an upper door trim mount, the air duct body is located in the door trim body, the first air outlet sponge is installed on a first air outlet grille, the first air outlet grille is snapped onto the door trim mount, the second air outlet sponge is installed on a second air outlet grille, and the second air outlet grille is snapped onto the door trim mount.

7. The door trim defrosting air duct structure according to claim 6, characterized in that: A mounting plate is arranged on the outer wall of the air duct body, and the mounting plate is detachably connected to the door trim body.

8. The door trim defrosting air duct structure according to claim 7, characterized in that: The mounting plate includes an upper mounting plate and a lower mounting plate. The upper mounting plate is located on the upper side of the air duct body and between the two air outlets, and the lower mounting plate is located on the lower side of the air duct body. There are two lower mounting plates, and the two lower mounting plates are respectively located on both sides of the upper mounting plate in the airflow direction.

9. The door trim defrosting air duct structure according to claim 7, characterized in that: The mounting plate is provided with mounting holes, and the air duct body is mounted on the door trim body by screws passing through the mounting holes of the mounting plate.

10. A method for installing a defrosting air duct structure for a door trim as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Install the duct body into the door trim; Install the sealing rubber sleeve to one end of the rubber ring frame, and install the air inlet sponge to the other end of the rubber ring frame; Install the rubber ring frame onto the door trim, and insert one end of the air inlet sponge into the air inlet of the air duct body; Install the air outlet sponge on the air outlet grille, then clip the air outlet grille to the door trim and install it, with one end of the installed air outlet sponge extending into the air duct body.

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