Rearview mirror folding structure, assembly and design method

Abstract

The invention discloses a rearview mirror folding structure, an assembly and a design method. The rearview mirror folding structure comprises an auxiliary mirror shell, a matching piece and a mirror base. A hole is formed in the area, used for being rotationally matched with the mirror base, of the auxiliary mirror shell. The matching piece is detachably installed in the hole so that the auxiliary mirror shell and the mirror base can be in rotating fit for folding through the matching piece. The design method is used for designing the rearview mirror folding structure, and the rearview mirror assembly comprises the rearview mirror folding structure. The rearview mirror has the beneficial effects that the hole is formed in the folding matching area of the auxiliary mirror shell to avoid structural deformation in the machining process, and then the matching piece with the conveniently-controlled structural size is independently machined to replace the folding matching area of the auxiliary mirror shell to be rotationally matched with the mirror base, so that the folding performance of the rearview mirror can be effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of automobile parts, and in particular to a rearview mirror folding structure, assembly and design method. Background Art

[0002] like Figure 1 The figure shows a schematic diagram of a conventional rearview mirror in an unfolded state. Figure 2 The figure shows a schematic diagram of a conventional rearview mirror in a folded state. Figure 1 and Figure 2 It can be seen that the folding of the conventional rearview mirror is mainly achieved by rotating the secondary mirror housing 1 of the rearview mirror around the mirror base 2 fixedly mounted on the vehicle body. That is, the secondary mirror housing 1 is provided with a first folding surface 100 in a circular arc shape, and the mirror base 2 is provided with a second folding surface 200 in a circular arc shape; the centers of the circles corresponding to the first folding surface 100 and the second folding surface 200 coincide with each other, so that the secondary mirror housing 1 can rotate around the second folding surface 200 of the mirror base 2 through the first folding surface 100.

[0003] At present, the folding gap tolerance of the rearview mirror, that is, the gap tolerance between the first folding surface 100 and the second folding surface 200, has always been a special characteristic index for the quality control of the rearview mirror. However, during the production of the existing secondary mirror housing 100, due to its own structural characteristics, the deformation of the first folding surface 100 is large and difficult to control, resulting in a gap error, which in turn affects the folding effect of the rearview mirror, such as affecting the folding performance, increasing wind noise, folding abnormal noise, and increasing folding current. Summary of the invention

[0004] One of the purposes of the present application is to provide a rearview mirror folding structure that can solve at least one defect in the above-mentioned background technology.

[0005] Another object of the present application is to provide a rearview mirror assembly that can solve at least one defect in the above-mentioned background technology.

[0006] Another object of the present application is to provide a design method for a rearview mirror folding structure that can solve at least one defect in the above-mentioned background technology.

[0007] In order to achieve at least one of the above-mentioned purposes, the technical solution adopted in the present application is: a rearview mirror folding structure, comprising a sub-mirror shell, a matching piece and a mirror seat; a hole is provided in the area of ​​the sub-mirror shell for rotational cooperation with the mirror seat; the matching piece is detachably installed in the hole, so that the sub-mirror shell and the mirror seat can be rotationally cooperated for folding through the matching piece.

[0008] Preferably, the mating piece includes a mating portion and a supporting portion; the mating piece is snap-fitted with the supporting seat at the bottom of the secondary mirror shell through the lower end face of the supporting portion, the mating portion is arc-shaped and fits into the hole, and the mating portion is suitable for rotationally mating with the mirror seat through the side close to the mirror seat.

[0009] Preferably, the mating piece also includes a fixing portion, which is arranged on a side of the mating portion close to the secondary mirror housing; the fixing portion is strip-shaped and is arranged along the edge of the hole, and the fixing portion and the hole are interference fit so that the fixing portion is elastically embedded in the hole.

[0010] Preferably, the edge of the matching portion is flush with the contour edge of the secondary mirror shell, and the fixing portion and the edge of the matching portion are spaced apart; when the fixing portion and the hole are matched and installed, the edge of the matching portion and the edge of the hole are abutted against each other to achieve elastic engagement between the fixing portion and the hole.

[0011] Preferably, the secondary mirror housing is provided with limiting ribs along the inner edge of the hole, and the fixing portion is provided with limiting grooves which cooperate with the limiting ribs for limiting.

[0012] Preferably, a positioning hole is provided on the fixing portion, and a positioning column is provided on the secondary mirror housing for positioning and cooperating with the positioning hole.

[0013] Preferably, a plurality of limiting members are further provided on the secondary mirror housing, the limiting members are arranged at intervals along the contour direction of the hole, and the limiting members are suitable for normal limiting of the fixing portion.

[0014] A design method for the above rearview mirror folding structure includes the following design steps:

[0015] S100: obtaining a three-dimensional model of a mirror base, a secondary mirror housing, and matching parts with the best simulation effect according to finite element simulation;

[0016] S200: Processing samples of the mirror base and the secondary mirror housing according to the obtained three-dimensional model;

[0017] S300: Measure and map the size of the processed sample, and update the three-dimensional model of the mirror base and the secondary mirror housing according to the measurement results;

[0018] S400: According to the updated model structure of the mirror base and the secondary mirror housing, the matching parts are optimized based on the simulation of the folding performance to obtain the structural dimensions of the matching parts with the best folding effect.

[0019] Preferably, in step S200, the samples are mass-produced, so that in step S300, the average value of the dimensions of all the samples is taken as the result of the surveying and mapping.

[0020] A rearview mirror assembly comprises the above-mentioned rearview mirror folding structure.

[0021] Compared with the prior art, the beneficial effects of this application are:

[0022] Holes are opened in the folding mating area of ​​the secondary mirror shell to avoid structural deformation during the processing process, and then a mating part with easily controlled structural dimensions is separately processed to replace the folding mating area of ​​the secondary mirror shell and rotate with the mirror seat, thereby effectively improving the folding performance of the rearview mirror. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the local structure of a rearview mirror in the prior art when it is in an unfolded state.

[0024] Figure 2 It is a schematic diagram of the local structure of the rearview mirror in the prior art when it is in a folded state.

[0025] Figure 3 This is a schematic diagram of the exploded state of the rearview mirror folding structure in this application.

[0026] Figure 4 Schematic diagram of the structure of the secondary mirror housing in this application.

[0027] Figure 5 The structure of the matching parts in this application is shown in FIG. Figure 1 .

[0028] Figure 6 The structure of the matching parts in this application is shown in FIG. Figure 2 .

[0029] Figure 7 Schematic diagram of the structure for installing the matching parts and the secondary mirror housing in this application Figure 1 .

[0030] Figure 8 Schematic diagram of the structure for installing the matching parts and the secondary mirror housing in this application Figure 2 .

[0031] Fig. 9 For this application Figure 8 A local enlarged schematic diagram of point A in the middle.

[0032] Fig.10 The present invention is a flowchart of the design steps of the design method of the rearview mirror folding structure in the present application.

[0033] In the figure: auxiliary mirror shell 1, first folding surface 100, hole 101, positioning column 102, first buckle 103, support seat 104, clamping hole 105, limiting rib 106, mirror seat 2, second folding surface 200, matching piece 3, matching part 31, third folding surface 310, support part 32, second buckle 321, fixing part 33, positioning hole 330, limiting groove 331. DETAILED DESCRIPTION

[0034] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that in the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0035] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and 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 cannot be understood as limiting the specific scope of protection of the present application.

[0036] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0037] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] The terms "including" and "having" and any variations thereof in the specification and claims of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0040] One aspect of the present application provides a rearview mirror folding structure, such as Figure 3 As shown, one preferred embodiment includes a secondary mirror housing 1, a matching piece 3 and a mirror base 2. A hole 101 is provided in the area of ​​the secondary mirror housing 1 for rotational cooperation with the mirror base 2, that is, a hole 101 is provided at a position corresponding to the conventional first folding surface 100 on the secondary mirror housing 1. The matching piece 3 is detachably mounted in the hole 101, so that the secondary mirror housing 1 and the mirror base 2 can be rotationally cooperated for folding through the matching piece 3; that is, after the matching piece 3 is mounted on the secondary mirror housing 1, the arc-shaped structural surface thereof can replace the conventional first folding surface 100 on the secondary mirror housing 1 and the second folding surface 200 on the mirror base 2 for rotational cooperation for folding.

[0041] It should be known that Figure 4 It can be seen from the internal structure of the sub-mirror housing 1 shown that the internal structure of the sub-mirror housing 1 is simple, that is, there is no structure such as reinforcing ribs inside the sub-mirror housing 1. At the same time, the sub-mirror housing 1 as a whole is a connection of multiple curved surface structures, which results in the connection position of adjacent curved surfaces of the sub-mirror housing 1 belonging to an area with poor structural strength. Specifically, during the injection molding process, the curved surface structure will shrink in size due to the expansion and contraction rate of the material itself after molding, and the size shrinkage between adjacent curved surface structures will interfere with each other, thereby causing the entire structure of each curved surface structure to have a large deformation, especially pulling the curved surface structure to deform in the direction of reducing the curvature, and the stress caused by the deformation will migrate and concentrate at the connection position of each adjacent curved surface structure.

[0042] For the mirror base 2, its structural dimensions are relatively smaller than those of the secondary mirror shell 1, and reinforcing ribs are generally provided inside the mirror base 2 near the second folding surface 200, which makes the deformation degree of the second folding surface 200 of the mirror base 2 smaller; that is, the structure of the second folding surface 200 corresponding to the mirror base 2 is easy to control, and the dimensional error after the injection molding process is within the allowable error range, so in this embodiment, only the area of ​​the secondary mirror shell 1 corresponding to the first folding surface 100 needs to be structurally improved.

[0043] That is, for the conventional secondary mirror housing 1, the structure corresponding to the first folding surface 100 thereof has a large deformation, and the direction of the deformation is in the direction of reducing the curvature. In layman's terms, the radius of the equivalent circle corresponding to the first folding surface 100 is greater than the radius of the equivalent circle corresponding to the second folding surface 200, and then when the first folding surface 100 and the second folding surface 200 are matched, a large gap will be generated between the edge position of the first folding surface 100 and the edge position of the second folding surface 200, and a smaller gap will be generated between the middle position of the first folding surface 100 and the middle position of the second folding surface 200. The larger gap at the edge will generate a larger wind noise during the driving of the vehicle; while the smaller gap in the middle will generate a larger folding abnormal noise during the folding of the rearview mirror, and the required folding current also needs to be increased.

[0044] Therefore, in this embodiment, for the secondary mirror housing 1 whose structure is easily deformed, a hole 101 can be opened at the position corresponding to the first folding surface 100, so that not only the stress concentration of the secondary mirror housing 1 at the edge position of the first folding surface 100 can be effectively reduced, but also the overall structure of the secondary mirror housing 1 can be simplified to reduce the difficulty of processing. At the same time, the present embodiment designs the matching piece 3 based on the structural size of the first folding surface 100. Since the matching piece 3 is a structural shape corresponding only to the first folding surface 100, there is no deformation pulling effect and stress concentration of the adjacent curved surface structure, so the structural size of the matching piece 3 is easy to control during the processing, thereby obtaining a matching piece 3 with good dimensional accuracy. Finally, the obtained matching piece 3 can be installed at the position of the hole 101 of the secondary mirror housing 1 to replace the first folding surface 100 of the secondary mirror housing 1 and the second folding surface 200 of the mirror seat 2 for folding rotational matching. Thereby, the problems of wind noise, abnormal folding sound and folding current can be effectively improved, so that the rearview mirror folding structure of the present embodiment has good folding performance.

[0045] In this embodiment, Figures 4 to 7As shown, a support seat 104 is provided at the bottom of the secondary mirror housing 1, and the secondary mirror housing 1 can be rotatably mounted on the mirror base 2 through the support seat 104. The matching piece 3 includes a matching portion 31 and a supporting portion 32; wherein, the matching piece 3 is snap-fitted with the supporting seat 104 at the bottom of the secondary mirror housing 1 through the lower end surface of the supporting portion 32, so that the secondary mirror housing 1 can be rotatably matched with the mirror base 2 through the supporting portion 32 of the matching piece 3, thereby ensuring that all contactable areas between the mirror base 2 and the secondary mirror housing 1 are replaced by the matching piece 3, so as to further improve the folding performance of the rearview mirror. The matching portion 31 is in an arc shape and is embedded with the hole 101, and the side of the matching portion 31 close to the mirror base 2 is a third folding surface 310, and the matching portion 31 can be rotatably matched with the second folding surface 200 on the mirror base 2 through the third folding surface 310.

[0046] It is understandable that, in order to ensure the stable installation of the matching piece 3, the matching piece 3 can be stably detachably connected to the support seat 104 at the bottom of the secondary mirror housing 1 through the support portion 32. There are many specific detachable connection methods. Considering the convenience of installation of the matching piece 31, snap-fit ​​is preferably used in this embodiment; for easy understanding, a detailed description will be given below through one of the specific examples.

[0047] Specifically, Figure 4 , Figure 6 and Figure 8 As shown, the lower end surface of the support portion 32 is provided with a second buckle 321 extending downward. In order to ensure stable installation, the number of the second buckle 321 can be multiple, for example Figure 6 As shown, there are three second buckles 321, which are arranged in a triangle. Correspondingly, the support base 104 at the bottom of the secondary mirror housing 1 is also provided with corresponding number and position of buckle holes 105. When installing the matching member 3, it is only necessary to align the second buckle 321 with the buckle holes 105 on the support base 104 and press and buckle them.

[0048] It should be known that for the stable installation of the mating member 3, not only the support portion 32 but also the mating portion 31 needs to be limited, and the mating portion 31 is related to the folding performance of the entire rearview mirror, so the limitation of the mating portion 31 is very important. Specifically, the limitation of the mating portion 31 not only needs to ensure the stable connection between the mating portion 31 and the secondary mirror housing 1, but also needs to ensure that the mating portion 31 cannot be structurally deformed to ensure the structural accuracy of the third folding surface 310.

[0049] In this embodiment, in order to limit the matching portion 3, as shown in FIG. Figure 5 , Figure 6 and Figure 8As shown, the matching piece 3 further includes a fixing portion 33, which is arranged on a side of the matching portion 31 close to the secondary mirror housing 1. The fixing portion 33 is strip-shaped and arranged along the edge of the hole 101, and the fixing portion 33 and the hole 101 are interference-fitted so that the fixing portion 33 is elastically embedded in the hole 101.

[0050] It is understandable that in order to avoid the structural accuracy of the third folding surface 310 from being affected in this embodiment, the method of installing the matching portion 31 with the secondary mirror housing 1 is not adopted, but a fixing portion 33 is provided on one side of the matching portion 31, and the influence of the third folding surface 310 during the installation process of the matching member 3 is reduced or avoided by installing the fixing portion 33 with the secondary mirror housing 1. And the fixing portion 33 can be evenly distributed on the edge of the hole 101, so that all positions of the edge of the matching portion 31 can be limited by the fixing portion 33, thereby improving the installation stability of the matching portion 31. At the same time, the installation method of the fixing portion 33 is parallel to or slightly inclined to the normal direction of the matching portion 31, so when the fixing portion 33 and the hole 101 are interference fit, the deformation direction of the fixing portion 33 is substantially perpendicular to the surface of the matching portion 31, so that the influence of the deformation of the fixing portion 33 on the matching portion 31 is reduced to a minimum. There are many specific ways for the fixing portion 33 to perform interference fit with the hole 101. For the convenience of understanding, a detailed description will be given below through one of the structures.

[0051] Specifically, Figures 4 to 7 As shown, the edge of the matching portion 31 is flush with the contour edge of the secondary mirror housing 1, so that after the matching portion 31 is installed in the secondary mirror housing 1, the overall contour of the assembly formed by the two is uniform, thereby effectively reducing wind resistance and increasing the overall aesthetics. The edges of the fixing portion 33 and the matching portion 31 are spaced apart, so that when the fixing portion 33 and the hole 101 are matched and installed, the edge of the matching portion 31 and the edge of the hole 101 are abutted against each other to perform elastic interlocking of the fixing portion 33 and the hole 101.

[0052] It is understandable that, since the overall structure of the matching portion 31 is in an arc shape, the fixing portion 33 is in a "horn" shape when it is arranged on the side of the matching portion 31, so that when the fixing portion 33 and the hole 101 are elastically engaged, the extrusion force generated by the elastic abutment between the fixing portion 33 and the edge of the hole 101 will drive the matching portion 31 to have a tendency to move toward the inside of the secondary mirror housing 1. Therefore, in order to ensure the stable installation of the matching member 3, it is necessary to limit the matching portion 31. In this embodiment, the fixing portion 33 and the edge of the matching portion 31 are spaced apart, that is, the outline size of the hole 101 is smaller than the outline size of the matching portion 31, so that when the fixing portion 33 and the inner side of the hole 101 are elastically extruded and matched, the matching portion 31 can be matched with the outer side of the hole 101 through the edge, thereby realizing the limitation of the matching portion 31, so that the matching portion 31 can remain stable.

[0053] In this embodiment, Figure 4 , Figure 5 , Figure 8 and Fig. 9 As shown, the secondary mirror housing 1 is provided with a limiting rib 106 along the inner edge of the hole 101, and the fixing portion 33 is provided with a limiting groove 331 for limiting cooperation with the limiting rib 106. Therefore, when the matching piece 3 is installed on the secondary mirror housing 1, the fixing portion 33 can be engaged with the limiting rib 106 on the inner edge of the hole 101 through the limiting groove 331; thus, the specific installation position of the matching portion 31 can be located, so as to further improve the installation accuracy of the matching piece 3.

[0054] It is understandable that, when the matching portion 31 is installed, since the fixing portion 33 can be elastically deformed, there may be a situation where the fixing portion 33 is not accurately installed due to the elastic deformation. Then, by providing the limiting rib 106 and the limiting groove 331, it can be ensured that when the fixing portion 33 is installed, the fixing portion 33 is installed in place through the engagement of the limiting rib 106 and the limiting groove 331.

[0055] In this embodiment, Figure 4 , Figure 6 and Figure 8 As shown, the fixing portion 33 is provided with a positioning hole 330, and the secondary mirror housing 1 is provided with a positioning post 102 for positioning and matching with the positioning hole 330. Therefore, when the matching portion 31 is installed, the positioning hole 330 and the positioning post 102 can be plugged and matched to achieve deformation restriction of the fixing portion 33 after installation.

[0056] It should be noted that, since the fixing portion 33 is a thin-walled strip structure, the limiting rib 106 and the limiting groove 331 can only play a certain positioning and limiting role in the installation of the fixing portion 33. However, the structural size of the limiting rib 106 is relatively small, that is, the structural strength of the limiting rib 106 is relatively weak, and it is easy to break during the folding process of the rearview mirror. In this embodiment, the structural strength of the positioning column 102 is much greater than that of the limiting rib 106, so through the plug-in cooperation of the positioning column 102 and the positioning hole 330, the deformation of the fixing portion 33 along the normal direction of the matching portion 31 can be effectively suppressed, thereby effectively protecting the limiting rib 106.

[0057] It should be known that the specific number of the positioning posts 102 may preferably be multiple, and the multiple positioning posts 102 are spaced apart along the contour direction of the hole 101; for example Figure 4 As shown, the number of the positioning posts 102 is two.

[0058] In this embodiment, Figure 4 and Figure 8As shown, a plurality of limit members are also provided on the secondary mirror housing 1 , and the limit members are arranged at intervals along the contour direction of the hole 101 . The limit members can limit the fixing portion 33 in the normal direction, thereby suppressing the elastic deformation of the fixing portion 33 .

[0059] It is understandable that, since the fixing portion 33 is a thin-walled structure, the fixing portion 33 has a poor ability to resist deformation in its normal direction. Therefore, during the folding process of the rearview mirror, the fixing portion 33 is prone to warping and deformation when the matching portion 31 is subjected to the friction force along the relative rotation extension direction of the third folding surface 310, which in turn causes a slight offset of the matching portion 31 and affects the folding performance. By setting a limiter to limit the fixing portion 33 in the normal direction, the warping deformation of the fixing portion 33 can be effectively suppressed. There are many specific structures and specific limiting methods for the limiter. For the sake of easy understanding, a detailed description will be given below through one of the specific examples.

[0060] Specifically, Figure 4 and Figure 8 As shown, the limiting member adopts a first buckle 103. After the fixing portion 33 is installed, the first buckle 103 can buckle the edge of the fixing portion 33, thereby realizing the normal limit of the fixing portion 33. The specific number of the first buckles 103 can be set according to the actual needs of those skilled in the art; considering that the number of the positioning columns 102 is two, the single-side edge of the hole 101 can be divided into three partitions by the positioning columns 102, so the number of the first buckles 103 can preferably be three, and the three first buckles 103 are respectively set in the middle of the three partitions.

[0061] Another aspect of the present application provides a design method for the above rearview mirror folding structure, such as Fig.10 As shown, one of the preferred embodiments includes the following design steps:

[0062] S100: Obtaining a three-dimensional model of the mirror base 2, the secondary mirror housing 1 and the matching component 3 with the best simulation effect according to finite element simulation.

[0063] S200: Processing samples of the mirror base 2 and the secondary mirror housing 1 according to the obtained three-dimensional model.

[0064] S300: Measure and map the size of the processed sample, and update the three-dimensional model of the mirror base 2 and the secondary mirror housing 1 according to the measurement results.

[0065] S400: According to the updated model structures of the mirror base 2 and the secondary mirror housing 1 , the matching component 3 is optimized based on simulation of the folding performance to obtain the structural dimensions of the matching component 3 with the best folding effect.

[0066] It is understandable that the basic dimensions of the secondary mirror housing 1 and the mirror base 2 can adopt traditional structural dimensions, that is, the basic dimensions of the secondary mirror housing 1 and the mirror base 2 can be regarded as known. Then, the three-dimensional model of the secondary mirror housing 1 and the mirror base 2 can be constructed according to the known parameters and the structural design of the hole 101 can be completed. Then, based on the structural dimensions of the mirror base 2 and the structure of the hole 101 on the secondary mirror housing 1, combined with the matching tolerance required for the folding of the rearview mirror, a three-dimensional model of the theoretical structural dimensions of the matching part 3 can be preliminarily designed.

[0067] It should be noted that the theoretical structural dimension model of the matching part 3 does not take into account the deformation error of the mirror base 2 and the secondary mirror shell 1 during the processing. Therefore, the mirror base 2 and the secondary mirror shell 1 can be processed as samples first, and the actual structural dimensions of the mirror base 2 and the secondary mirror shell 1 under deformation error can be obtained according to the surveying and mapping results of the samples. At this time, the actual structural dimensions of the mirror base 2 and the secondary mirror shell 1 can be substituted into the finite element software as the correction parameters of the model to obtain the correction model of the mirror base 2 and the secondary mirror shell 1 under the actual deformation error; finally, the structural dimensions of the matching part 3 are simulated and optimized according to the obtained correction model, and finally the optimal structural dimensions of the matching part 3 under the actual deformation error are obtained. Then, according to the obtained optimal structural dimensions of the matching part 3, the sample is processed to obtain all the parts of the above-mentioned rearview mirror folding structure; and the rearview mirror folding structure with excellent folding performance can be obtained by assembling them.

[0068] It should be known that, taking into account the systematic errors that may occur in the sample during the processing, batch production of samples of the mirror base 2 and the secondary mirror housing 1 can be carried out in step S200, and then in step S300, the dimensions of all batch-produced samples are measured and the average value is taken to avoid the influence of the systematic errors, thereby effectively improving the accuracy of the model correction.

[0069] Another aspect of the present application provides a rearview mirror assembly, wherein a preferred embodiment includes the above-mentioned rearview mirror folding structure, and the rearview mirror folding structure is designed using the above-mentioned design method.

[0070] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A rearview mirror folding structure, characterized in that: It includes a secondary mirror housing, matching parts and a mirror base; The area of ​​the secondary mirror housing used for rotational cooperation with the mirror base is provided with a hole; The matching piece is detachably mounted on the hole, so that the secondary mirror housing and the mirror base can be rotationally matched for folding through the matching piece.

2. The rearview mirror folding structure according to claim 1, characterized in that: The matching piece includes a matching portion and a supporting portion; The matching piece is snap-fitted with the supporting seat at the bottom of the secondary mirror housing through the lower end surface of the supporting portion; The matching portion is in an arc shape and is engaged with the hole. The matching portion is suitable for rotationally matching with the mirror base through a side surface close to the mirror base.

3. The rearview mirror folding structure according to claim 2, characterized in that: The matching piece further comprises a fixing portion, and the fixing portion is arranged on a side of the matching portion close to the secondary mirror housing; The fixing portion is strip-shaped and is arranged along the edge of the hole. The fixing portion and the hole are interference-fitted so that the fixing portion is elastically embedded in the hole.

4. The rearview mirror folding structure according to claim 3, characterized in that: The edge of the matching portion is flush with the contour edge of the secondary mirror housing, and the fixing portion and the edge of the matching portion are spaced apart; When the fixing portion and the hole are matched and installed, the fixing portion and the hole are elastically engaged by abutting against the edge of the matching portion and the edge of the hole.

5. The rearview mirror folding structure according to claim 3, characterized in that: The secondary mirror housing is provided with a limiting rib along the inner edge of the hole, and the fixing portion is provided with a limiting groove which cooperates with the limiting rib for limiting.

6. The rearview mirror folding structure according to claim 3, characterized in that: The fixing portion is provided with a positioning hole, and the secondary mirror housing is provided with a positioning column which is positioned and matched with the positioning hole.

7. The rearview mirror folding structure according to claim 3, characterized in that: A plurality of limiting members are also provided on the secondary mirror housing. The limiting members are arranged at intervals along the contour direction of the hole, and the limiting members are suitable for normal limiting of the fixing portion.

8. A method for designing a rearview mirror folding structure according to any one of claims 1 to 7, characterized in that: The design steps include: S100: obtaining a three-dimensional model of a mirror base, a secondary mirror housing, and matching parts with the best simulation effect according to finite element simulation; S200: Processing samples of the mirror base and the secondary mirror housing according to the obtained three-dimensional model; S300: Measure and map the size of the processed sample, and update the three-dimensional model of the mirror base and the secondary mirror housing according to the measurement results; S400: According to the updated model structure of the mirror base and the secondary mirror housing, the matching parts are optimized based on the simulation of the folding performance to obtain the structural dimensions of the matching parts with the best folding effect.

9. The design method according to claim 8, characterized in that: In step S200, the samples are mass-produced, so that in step S300, the average size of all the samples is taken as the result of the surveying and mapping.

10. A rearview mirror assembly, characterized in that: It comprises the rearview mirror folding structure as described in any one of claims 1 to 7.

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