An inner rearview mirror cover and roof cooperation structure and automobile

Abstract

This invention discloses a rearview mirror cover and headliner mating structure and an automobile, relating to the field of automotive interior accessories technology. It includes a rearview mirror cover and a headliner. The contact area between the rearview mirror cover and the headliner is provided with several serrated protrusions. The rearview mirror cover engages with the headliner through these serrated protrusions, forming a predetermined interference amount to reduce the contact area between the rearview mirror cover and the headliner, thereby reducing the normal pressure borne by the headliner under stress. The rearview mirror cover and headliner mating structure of this invention uses a serrated protrusion structure, which reduces friction by decreasing the contact area between the rearview mirror cover and the headliner, thus effectively reducing or eliminating abnormal noise; moreover, the structure is simple and easy to assemble.

Description

Technical Field

[0001] This invention relates to the field of automotive interior accessories technology, and in particular to a rearview mirror cover and headliner fitting structure and an automobile. Background Technology

[0002] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art.

[0003] During car use, the friction noise between the rearview mirror cover and the roof is a common problem that affects the driving experience. Currently, the solution to this problem often involves adding cushioning materials. For example, one existing technology for a rearview mirror cover includes a cover body. By adding a sealing gasket to the bottom of the cover body, the gap between the cover and the windshield is eliminated, preventing the cover from shaking and hitting the windshield, thus avoiding noise.

[0004] The cushioning material can also be made of a material with compatible stickiness and slip resistance. Typically, the cover can be replaced with PC / ABS material with anti-squeak properties or a more sticky suede material. Alternatively, a layer of non-woven fabric can be attached to the surface of the cover to isolate the two materials with poor stickiness and slip resistance, thus isolating the source of friction. Another method involves adjusting the assembly gap. For example, existing technology discloses an interior rearview mirror cover structure where a shielding part is provided on the top cover interior panel, and an opening facing rearward is formed between the interior rearview mirror cover and the windshield. A gap is provided between the rear of the interior rearview mirror cover and the top cover interior panel; the shielding part, which is offset from the interior rearview mirror cover, covers this gap to overcome the noise problem. However, the above methods have limited effectiveness and increase production costs and assembly difficulty. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a rearview mirror cover and roof fitting structure and an automobile. The rearview mirror cover and roof fitting adopt a sawtooth boss structure, which reduces the contact area between the rearview mirror cover and the roof to reduce the friction value, thereby effectively reducing or eliminating abnormal noise; and the structure is simple and easy to assemble.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0007] In a first aspect, embodiments of the present invention provide a rearview mirror cover and roof fitting structure, including a rearview mirror cover and a roof. The contact area between the rearview mirror cover and the roof is provided with a plurality of serrated protrusions. The rearview mirror cover fits with the roof through the serrated protrusions and forms a set interference amount to reduce the contact surface between the rearview mirror cover and the roof and reduce the positive pressure borne by the roof under stress.

[0008] As a further implementation, the serrated protrusions are evenly distributed.

[0009] As a further implementation, the serrated boss includes a boss body, one end of which has a guide contact surface.

[0010] As a further implementation, the serrated boss has a set length, height, and width.

[0011] As a further implementation, the serrated boss has a height h of 1~1.5mm, a length a of 3~5mm, a width b of 0.8~1mm, and a spacing d between adjacent serrated bosses of 3~5mm.

[0012] As a further implementation, the interference amount is 1~1.5mm.

[0013] As a further implementation, the serrated boss is made of PC / ABS material.

[0014] As a further implementation, the rearview mirror cover includes a first cover and a second cover, which are snapped together along the Y direction.

[0015] As a further implementation, the first and second protective covers are symmetrically provided with a second snap-fit ​​structure, which is used to cooperate with the glass base.

[0016] Secondly, embodiments of the present invention also provide a car equipped with the aforementioned rearview mirror cover and roof fitting structure.

[0017] The beneficial effects of this invention are as follows:

[0018] (1) The rearview mirror cover of the present invention is provided with a sawtooth protrusion in the contact area with the roof, so that the rearview mirror cover and the roof form an interference design. Under the same stress state, the positive pressure on the roof can be reduced, and the actual stress area of ​​the cover and the roof is reduced. This ensures that there will be no excessive gap fit problem in the actual matching state, and can effectively reduce or eliminate abnormal noise.

[0019] (2) When the rearview mirror cover of the present invention is assembled with the roof, the serrated boss is embedded in the roof. Due to the serrated design of the boss, the contact area between the rearview mirror cover and the roof is reduced and the contact points are evenly distributed. During the vehicle's operation, even if vibration or temperature changes occur, the serrated boss can effectively disperse stress and reduce friction, thereby reducing abnormal noise. The interference design between the rearview mirror cover and the roof ensures that there will be no excessive gap fit problem in the actual matching state. The rearview mirror cover is firmly connected to the glass base through the snap-fit ​​structure, and the rearview mirror cover itself is also interlocked through the snap-fit ​​structure, so that the left and right rearview mirror covers are firmly and reliably connected in the actual state. During the vehicle's operation, the rearview mirror cover and the glass base are firmly and reliably matched.

[0020] (3) The height h of the sawtooth protrusion of the present invention is 1~1.5mm, the length a is 3~5mm, the width b is 0.8~1mm, and the distance d between adjacent sawtooth protrusions 25 is 3~5mm. Through the above-mentioned size design, the rearview mirror cover and the roof form an interference of 1~1.5mm, which can ensure a good fit between the rearview mirror cover and the roof. Attached Figure Description

[0021] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0022] Figure 1 This is a schematic diagram of the installation of the interior rearview mirror and the interior rearview mirror cover according to one or more embodiments of the present invention;

[0023] Figure 2 This is a schematic diagram of the rearview mirror cover structure according to one or more embodiments of the present invention;

[0024] Figure 3 This is a schematic diagram of the distribution of serrated bosses according to one or more embodiments of the present invention;

[0025] Figure 4 This is a cross-sectional view of the serrated boss distribution according to one or more embodiments of the present invention;

[0026] Figure 5 This is a schematic diagram illustrating the cooperation between the rearview mirror cover and the roof according to one or more embodiments of the present invention. Figure 1 ;

[0027] Figure 6 This is a schematic diagram illustrating the cooperation between the rearview mirror cover and the roof according to one or more embodiments of the present invention. Figure 2 ;

[0028] Figure 7 This is a partial enlarged view of the serrated boss according to one or more embodiments of the present invention.

[0029] Among them, 1. Roof, 2. Interior rearview mirror cover, 3. Interior rearview mirror;

[0030] 21. First protective cover; 22. Second protective cover; 23. First snap-fit ​​structure; 24. Second snap-fit ​​structure; 25. Serrated boss.

[0031] 251. Boss body; 252. Guide contact surface. Detailed Implementation

[0032] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0033] For ease of description, the terms "upper," "lower," "front," and "rear" appearing in this invention only indicate that they correspond to the upper, lower, front, and rear directions in the accompanying drawings. They do not limit the structure and are merely used to facilitate the description of the invention and to simplify the description. They do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] Example 1:

[0035] The frictional noise between the rearview mirror cover 2 and the headliner 1 is fundamentally caused by the stick-slip movement of the contact surfaces, which includes three influencing factors: normal pressure, relative position, and the stick-slip properties of the contact surfaces. Through CAE simulation analysis, the normal pressure and relative displacement can be calculated, and the theoretical risk level can be given based on the measured data in the material risk table, thus enabling a digital classification of noise risk levels. Existing solutions for frictional noise between the rearview mirror cover 2 and the headliner 1 often involve adding buffer materials or adjusting assembly gaps, but these methods have limited effectiveness and increase production costs and assembly difficulty.

[0036] Based on this, this embodiment provides a structure for the interior rearview mirror cover and the roof to fit together, including an interior rearview mirror cover 2 and a roof 1, as shown below. Figure 1 As shown, the interior rearview mirror 3 is installed on the outside of the interior rearview mirror cover 2; the contact area between the interior rearview mirror cover 2 and the roof 1 is provided with a sawtooth protrusion 25, which changes the direction of the friction source force and the contact area to ultimately change the magnitude of the positive pressure, so as to solve the problem of abnormal noise.

[0037] Specifically, such as Figure 2As shown, the rearview mirror cover 2 is a split structure, comprising a symmetrically arranged first cover 21 and second cover 22. The first cover 21 and second cover 22 are assembled along the Y direction, and are secured by multiple first snap-fit ​​structures 23. The number of first snap-fit ​​structures 23 is set according to actual installation requirements, for example, four first snap-fit ​​structures 23 are provided.

[0038] The outer edges of the first protective cover 21 and the second protective cover 22 are respectively provided with second snap-fit ​​structures 24, which are engaged with the glass base through the second snap-fit ​​structures 24. In this embodiment, the first snap-fit ​​structure 23 and the second snap-fit ​​structure 24 ensure a firm fit between the interior rearview mirror cover 2 and the glass base during vehicle movement. The cover is made of PC / ABS material, which is an engineering plastic made of polycarbonate (PC) and acrylonitrile-butadiene-styrene copolymer (ABS). Through 3D data design, a strong structure is added to the interior rearview mirror cover 2 itself, and reinforcing ribs are arranged; coupled with the high rigidity and impact resistance of the material itself, the structural strength of the single piece is increased.

[0039] In this embodiment, the rearview mirror cover 2 and the roof 1 are designed to interfere with each other, such as... Figure 5 As shown, a serrated protrusion 25 is provided on the interior rearview mirror cover 2, and the serrated protrusion 25 and the roof 1 meet the interference fit requirements. In this embodiment, the interference amount c between the interior rearview mirror cover 2 and the roof 1 is 1~1.5mm, ensuring that there will be no unacceptably large gap fit problem in the actual matching state.

[0040] like Figures 2-4 As shown, a serrated protrusion 25 is provided on the edge of the contact area between the interior rearview mirror cover 2 and the roof 1, and the serrated protrusion 25 is evenly distributed. The setting direction of the serrated protrusion 25 is perpendicular to the engagement direction of the interior rearview mirror cover 2, that is, the serrated protrusion 25 is set along the X direction. By setting the serrated protrusion 25, the stability of the fit between the interior rearview mirror cover 2 and the roof 1 can be increased, thereby effectively reducing or eliminating abnormal noise.

[0041] like Figure 7As shown, the serrated boss 25 includes a boss body 251, which has a block-like structure. One end of the boss body 251 (corresponding to the outer edge of the rearview mirror cover 2) has a guide contact surface 252, which facilitates its mating with the roof 1. The guide contact surface 252 and the boss body 251 form a serrated structure. The serrated boss 25 has a set length a, height h, and width b. In this embodiment, the height h of the serrated boss 25 is 1~1.5mm, the length a is 3~5mm, the width b is 0.8~1mm, and the spacing d between adjacent serrated bosses 25 is 3~5mm. These dimensions enable the serrated boss 25 to meet the purpose of reducing the normal pressure borne by the roof 1 under the same stress state when mating with the roof 1, while reducing the actual stress area of ​​the rearview mirror cover 2 in contact with the roof 1.

[0042] In this embodiment, the serrated protrusion 25 is made of the same material as the rearview mirror cover 2, namely PC / ABS material.

[0043] The working principle of this embodiment is as follows:

[0044] When the rearview mirror cover 2 is assembled with the roof 1, the serrated boss 25 is embedded in the roof 2. Due to the structural design of the serrated boss 25, the contact area between the rearview mirror cover 2 and the roof 1 is reduced, and the contact points are evenly distributed. During vehicle operation, even if vibration or temperature changes occur, the serrated boss 25 can effectively disperse stress and reduce friction, thereby reducing abnormal noise.

[0045] The rearview mirror cover 2 is designed to have an interference of 1~1.5mm with the roof 1, ensuring that there will not be excessive gaps in the actual matching state. The first cover 21 and the second cover 22 are firmly snapped to the glass base through the second connecting structure 24. The first cover 21 and the second cover 22 are further interlocked by the first snap-fit ​​structure 23, making the first cover 21 and the second cover 22, which are set on the left and right respectively, firmly and reliably snapped together. During the whole vehicle driving, the interior rearview mirror cover 2 and the glass base are firmly and reliably matched. Therefore, through the snap-fit ​​matching of the interior rearview mirror cover 2 itself, the interior rearview mirror cover 2 and the glass base are also snap-fit ​​matched, and combined with the matching method of the interior rearview mirror cover 2 and the roof 1, the stability of the cover after assembly is guaranteed.

[0046] This embodiment only changes the mating structure between the rearview mirror cover 2 and the roof 1, without adding excessive costs; it requires no additional cushioning material or changes to the connection method, making it easy to implement; the mating design of the serrated boss 25 and the groove facilitates assembly and improves production efficiency. Therefore, the anti-noise serrated boss design structure of the rearview mirror cover 2 and the roof 1 in this embodiment can effectively reduce or eliminate noise, effectively solving the problem of noise easily generated by traditional structures, and has the advantages of simple structure, low cost, and convenient assembly.

[0047] Example 2:

[0048] This embodiment provides a rearview mirror cover and roof fitting structure, which differs from Embodiment 1 in that: several guide posts are provided on the roof 1 corresponding to the installation position of the rearview mirror cover 2, and the rearview mirror cover 2 is provided with guide grooves that cooperate with the guide posts. When assembling the rearview mirror cover 2, the guide posts can be inserted into the guide grooves to guide the fit between the rearview mirror cover 2 and the roof 1, ensuring that the serrated boss 25 can accurately contact the roof 1 and achieve the predetermined interference amount.

[0049] The remaining structure is the same as in Example 1, and will not be described again here.

[0050] Example 3:

[0051] This embodiment provides a car with the rearview mirror cover and roof matching structure described in Embodiment 1, which can solve the problem of abnormal noise between the roof 1 and the rearview mirror cover 2 during vehicle operation.

[0052] For example, in the Fengyun TX model, the inner rearview mirror cover 2 is made of PC / ABS plastic, the headliner 1 is made of fabric, and the serrated protrusions 25 have a height of 1mm, a length of 5mm, and a width of 0.8mm, with a spacing of 3mm between adjacent serrated protrusions 25. Testing showed that this structure reduces abnormal noise by more than 100% during vehicle operation.

[0053] For the Tiggo X model, the interior rearview mirror cover 2 is made of PC / ABS plastic, and the headliner 1 is made of suede. The serrated protrusions are 1mm high, 5mm long, and 0.8mm wide, with a spacing of 3mm between adjacent serrated protrusions 25. Testing showed that this structure reduces abnormal noise by more than 90% during vehicle operation.

[0054] For the Star Era X model, the interior rearview mirror cover 2 is made of PC / ABS plastic, and the headliner 1 is made of suede. The serrated protrusions 25 are 1mm high, 3mm long, and 0.8mm wide, with a spacing of 3mm between adjacent serrated protrusions 25. Testing showed that this structure reduces abnormal noise by more than 90% within a temperature range of -40°C to 80°C.

[0055] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A rearview mirror cover and roof fitting structure, characterized in that, The device includes an interior rearview mirror cover and a roof. The contact area between the interior rearview mirror cover and the roof is provided with several serrated protrusions. Each serrated protrusion has a set length, height, and width. The height h of each serrated protrusion is 1~1.5mm, the length a is 3~5mm, the width b is 0.8~1mm, and the spacing d between adjacent serrated protrusions is 3~5mm. The interior rearview mirror cover cooperates with the roof through the serrated protrusions to form a set interference amount, thereby reducing the contact area between the interior rearview mirror cover and the roof and reducing the normal pressure borne by the roof under stress.

2. The rearview mirror cover and roof fitting structure according to claim 1, characterized in that, The serrated protrusions are evenly distributed.

3. The rearview mirror cover and roof fitting structure according to claim 1 or 2, characterized in that, The serrated boss includes a boss body, and one end of the boss body has a guide contact surface.

4. The rearview mirror cover and roof fitting structure according to claim 1, characterized in that, The interference amount is 1~1.5mm.

5. The rearview mirror cover and roof fitting structure according to claim 1, characterized in that, The serrated boss is made of PC / ABS material.

6. The rearview mirror cover and roof fitting structure according to claim 1, characterized in that, The rearview mirror cover includes a first cover and a second cover, which are snapped together along the Y direction.

7. The rearview mirror cover and roof fitting structure according to claim 6, characterized in that, The first and second protective covers are symmetrically provided with a second snap-fit ​​structure, which is used to cooperate with the glass base.

8. A car, characterized in that, It is equipped with an interior rearview mirror cover and roof fitting structure as described in any one of claims 1-7.

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