Conveniently installable low-transmittance sun visor

Abstract

The application relates to a low-transmittance sun visor which can be conveniently installed, comprising a light-transmitting sun visor, a mounting seat, a rotating shaft assembly rotatably arranged at the two ends of the mounting seat, and a spring assembly fixedly connected with the mounting seat, wherein the spring assembly is provided with at least one spring piece, the edge of the light-transmitting sun visor in the length direction is provided with a connecting part, the rotating shaft assembly comprises a rotating shaft seat and a rotating shaft fixedly connected with the rotating shaft seat, the connecting part is screw-fastened with the rotating shaft seat, the spring assembly is provided with a spring piece, the end of the rotating shaft away from the rotating shaft seat is accommodated in the spring assembly and is fixedly connected with the spring piece in the spring assembly, the rotating shaft is arranged to be rotatable relative to the spring assembly under the action of external force, and a first fixing hole is formed in the mounting seat. The low-transmittance sun visor which can be conveniently installed can effectively block strong light, is convenient to install, does not block the view of the driver and the passenger, is suitable for various vehicle models, and can improve the use experience of the driver and the passenger.

Description

Technical Field

[0001] This invention relates to the field of technology, and in particular to a low-transmittance sunshade that can be easily installed. Background Technology

[0002] In existing technologies, sun visors are usually provided for drivers and passengers of various types of cars to avoid direct exposure to strong light such as sunlight and headlights.

[0003] Currently, common car sun visors are constructed by covering a plastic frame or EPP frame with PVC film or knitted fabric. While these sun visors effectively block strong sunlight, their opaque nature can easily obstruct the view of drivers and passengers, thus affecting driving safety and comfort. This problem is particularly pronounced in complex environments such as sightseeing vehicles or patrol vehicles. Summary of the Invention

[0004] To address the aforementioned issues, this invention provides a low-transmittance sun visor that effectively blocks strong light while being easy to install without obstructing the driver's or passengers' view. It is suitable for various vehicle models and enhances the user experience for drivers and passengers.

[0005] To achieve the above objectives, the present invention provides a conveniently installable low-transmittance sunshade, comprising a light-transmitting sunshade, a mounting base, a rotating shaft assembly rotatably disposed at both ends of the mounting base, and a spring assembly fixedly connected to the mounting base. At least one spring assembly is provided. The edge of the light-transmitting sunshade along its length direction has a connecting portion. The rotating shaft assembly includes a rotating shaft seat and a rotating shaft fixedly connected to the rotating shaft seat. The connecting portion is screwed to the rotating shaft seat. The spring assembly has a spring piece. One end of the rotating shaft, away from the rotating shaft seat, is housed within the spring assembly and is fixed within the spring assembly by the spring piece under pressure. The rotating shaft is configured to rotate relative to the spring assembly under external force. A first fixing hole is provided on the mounting base.

[0006] To improve the stability of the light-transmitting sunshade during rotation, the spring assembly also includes a spring protective sleeve and a spring plate limiting strip fixed inside the spring protective sleeve. The spring plate limiting strip has limiting protrusions integrally formed at both ends. The spring plate is C-shaped and is engaged between the two limiting protrusions by the protrusions at both ends. The spring plate is housed in the spring protective sleeve and forms a rotation space with the inner wall of the spring protective sleeve. The end of the rotating shaft away from the rotating shaft seat is housed in the rotation space and is fixed in the spring protective sleeve by force against the spring plate.

[0007] To improve the stability of the spring assembly during use, the mounting base is provided with a receiving groove and a first retaining groove. The opening direction of the receiving groove is the same as the installation direction of the mounting base, and multiple limiting and fastening ribs are provided at intervals along the depth direction of the inner wall of the receiving groove. The first retaining groove is provided on the inner wall of the receiving groove. A retaining block adapted to the first retaining groove is fixedly connected to the outer wall of the spring protective sleeve. The spring protective sleeve is received in the receiving groove through the limiting and fastening ribs, so that the retaining block is engaged with the mounting base through the first retaining groove.

[0008] To improve the smoothness of the shaft rotation, the mounting base is integrally formed with through holes and anti-crack holes. The through holes are connected to the receiving groove and are located on the same side of the first slot. The end of the shaft away from the shaft seat passes through the through holes and is placed in the rotation space. Multiple anti-crack holes are provided, and the multiple anti-crack holes are evenly distributed around the circumference of the through holes.

[0009] To limit the maximum rotation angle of the light-transmitting sunshade, a flat section is provided on the outer circumference of the rotating shaft. The rotating shaft contacts the surface of the spring sheet through the flat section. The plane where the light-transmitting sunshade is located is coplanar with the flat section. There is an acute angle θ between the flat section and the top plane of the spring sheet, and the θ is greater than 5°.

[0010] In order to effectively fix the light-transmitting sunshade and the rotating shaft assembly, the rotating shaft seat is provided with a second slot that matches the connecting part along its length direction. The connecting part is engaged with the rotating shaft seat through the second slot. The connecting part and the rotating shaft seat are provided with matching second fixing holes. Multiple second fixing holes are provided, and the multiple second fixing holes are spaced apart along the length direction of the rotating shaft seat. The number of second fixing holes on the rotating shaft seats at both ends of the mounting base is different.

[0011] For aesthetic purposes and to prevent installation errors, the shaft assembly also includes a first screw plug and locking feet. Multiple locking feet are provided, spaced apart along the length of the shaft seat on the bottom surface of the first screw plug. The connecting part and the shaft seat have third fixing holes corresponding to the locking feet. The shaft seat has a first recess that fits the first screw plug. The second and third fixing holes are located on the bottom surface of the first recess. The locking feet pass through the third fixing holes and are fixedly connected to the shaft seat and the light-transmitting sunshade, so that the first screw plug covers the first recess. The multiple third fixing holes are staggered with the second fixing holes along the length of the shaft seat, and the number of third fixing holes on the shaft seats at both ends of the mounting base is inconsistent.

[0012] A further embodiment includes a second screw plug, wherein the mounting base has a second recess that communicates with the first fixing hole and is adapted to the second screw plug, and the second screw plug is engaged with the mounting base through the second recess.

[0013] To enhance the structural strength of the shaft, the shaft includes a shaft body and a shaft core. The shaft core is made of galvanized steel wire and is embedded in the shaft body to form the shaft integrally through injection molding.

[0014] To further achieve strong light blocking without affecting the field of vision, the light-transmitting sunshade is made of wear-resistant PC injection molding with a light transmittance of 3.3%.

[0015] The low-transmittance sun visor designed in this invention can be easily installed. While ensuring effective blocking of strong light, it is easy to install and does not obstruct the driver's or passenger's view. It is suitable for various vehicle models and can improve the user experience of drivers and passengers. Attached Figure Description

[0016] Figure 1 This is a front-view perspective view of Example 1;

[0017] Figure 2 This is a perspective view of Example 1 from another angle;

[0018] Figure 3 yes Figure 2 3D exploded view;

[0019] Figure 4 This is a schematic diagram of the installation structure of the spring assembly and shaft assembly with the mounting base in Example 1;

[0020] Figure 5 yes Figure 1 3D exploded view;

[0021] Figure 6 This is a schematic diagram of the connection structure between the shaft assembly and the spring assembly in Example 1;

[0022] Figure 7 This is another schematic diagram of the connection structure between the shaft assembly and the spring assembly in Embodiment 1;

[0023] Figure 8 This is a schematic diagram of another embodiment of the connection structure between the spring assembly and the mounting base in Example 1.

[0024] The components include: a light-transmitting sunshade 1, a connecting part 11, a mounting base 2, a first fixing hole 21, a receiving groove 22, a second recessed groove 23, a first slot 24, a limiting fastening rib 25, a rotating shaft assembly 3, a rotating shaft seat 31, a second slot 311, a first recessed groove 312, a rotating shaft 32, a flat section 321, a rotating shaft body 322, a rotating shaft core 323, a first screw plug 33, a locking foot 34, a spring assembly 4, a spring piece 41, a raised section 411, a spring protective sleeve 42, a locking block 421, a spring piece limiting strip 43, a limiting protrusion 431, a rotation space 5, a second fixing hole 6, a third fixing hole 7, a second screw plug 8, a through hole 9, and a crack-prevention hole 91. Detailed Implementation

[0025] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0026] Example 1.

[0027] like Figure 1-7 As shown in the figure, the easily installable low-transmittance sunshade described in this embodiment includes a light-transmitting sunshade 1, a mounting base 2, a rotating shaft assembly 3 rotatably disposed at both ends of the mounting base 2, and a spring assembly 4 fixedly connected to the mounting base 2. At least one spring assembly 4 is provided. The edge of the light-transmitting sunshade 1 in the length direction is provided with a connecting part 11. The rotating shaft assembly 3 includes a rotating shaft seat 31 and a rotating shaft 32 fixedly connected to the rotating shaft seat 31. The connecting part 11 is screwed to the rotating shaft seat 31. The spring assembly 4 has a spring piece 41. The end of the rotating shaft 32 facing away from the rotating shaft seat 31 is housed in the spring assembly 4 and is fixed in the spring assembly 4 by resisting the spring piece 41. The rotating shaft 32 is configured to rotate relative to the spring assembly 4 under the action of external force. The mounting base 2 is provided with a first fixing hole 21. In this embodiment, the mounting base 2 is fixed to a suitable position on the vehicle through the first fixing hole 21. Then, the connecting part 11 at the edge of the light-transmitting sun visor 1 is fastened to the rotating shaft seat 31 with screws. The other side of the rotating shaft seat 31 is rotatably connected to the spring assembly 4 through the rotating shaft 31, thus completing the connection between the light-transmitting sun visor 1 and the mounting base 2. In use, when encountering strong light, the driver or passenger can rotate the light-transmitting sun visor 1, thereby driving the rotating shaft assembly 3 located at both ends of the mounting base 1 to rotate the light-transmitting sun visor 1 to a suitable position, so as to effectively block the direct irradiation of sunlight or lamplight. In this embodiment, the light-transmitting sun visor... The panel 1 is injection molded from wear-resistant PC with a light transmittance of 3.3%, further achieving strong light blocking without affecting the driver's or passengers' vision and maintaining a clear line of sight. The use of the pivot assembly 3, and the elastic support of the spring piece 41, ensures that the light-transmitting sun visor 1 can maintain a fixed selected angle, guaranteeing its stability during rotation. This means that even when encountering bumps or vibrations during driving, the light-transmitting sun visor 1 can maintain a stable position and will not rotate or loosen on its own, thus maintaining a good sun-shading effect throughout the driving process and providing a safer and more comfortable driving experience. Furthermore, in this embodiment, as... Figure 4 As shown, spring assembly 4 has one spring, or it can be as follows: Figure 8 As shown, two or more are set to cooperate with the pivot assembly 3 to achieve greater contact with the top and use the flip torque, ensuring the safe and stable use of the large-area light-transmitting sunshade 1.

[0028] In some embodiments of the present invention, such as Figure 6 and Figure 7As shown, the spring assembly 4 also includes a spring protective sleeve 42 and a spring plate limiting strip 43 fixed inside the spring protective sleeve 42. The spring plate limiting strip 43 has limiting protrusions 431 integrally formed at both ends. The spring plate 41 is C-shaped and is engaged between the two limiting protrusions 431 through the protrusions 411 at both ends. The spring plate 41 is housed in the spring protective sleeve 42 and forms a rotation space 5 with the inner wall of the spring protective sleeve 42. The end of the rotating shaft 32 away from the rotating shaft seat 31 is housed in the rotation space 5 and is fixed in the spring protective sleeve 42 by force against the spring plate 41. Thus, the structural design of one end of the rotating shaft 32, housed within the rotation space 5, abutting against the spring piece 41 and fixed within the spring protective sleeve 42, ensures the stability and consistency of the rotating shaft 32 and the light-transmitting sunshade 1 during rotation. The spring protective sleeve 42 prevents the spring piece 41 from loosening or failing due to external interference. The C-shaped design of the spring piece 41 allows the rotating shaft 32 to be securely locked within the rotation space 5, ensuring better smoothness of the light-transmitting sunshade 1 during rotation. The use of the limiting strip 43 in conjunction with the limiting protrusion 431 serves two purposes. First, it can hold the spring piece 41 between the limiting protrusions 431, effectively limiting the spring piece 41 in the front and back. Second, the limiting strip 43 ensures that the spring piece 41 is fixedly placed flat, thus ensuring that the elastic support force on the rotating shaft 32 is uniform. The spring protective sleeve 42, combined with the rotation space 5 limited by the spring piece 41, can limit the rotation range of the rotating shaft 32, ensuring that the light-transmitting sunshade 1 rotates stably within a predetermined angle and range.

[0029] In some embodiments of the present invention, such as Figure 3 and Figure 4 As shown, the mounting base 2 is provided with a receiving groove 22 and a first slot 24. The opening direction of the receiving groove 22 is the same as the installation direction of the mounting base 2, and a plurality of limiting fastening ribs 25 are provided at intervals along the depth direction of the inner wall of the receiving groove 22. The first slot 24 is provided on the inner wall of the receiving groove 22. A locking block 241 adapted to the first slot 24 is fixedly connected to the outer wall of the spring protective sleeve 42. The spring protective sleeve 42 is received in the receiving groove 22 by the limiting fastening ribs 25 so that the locking block 241 is engaged with the mounting base 2 through the first slot 24. In this way, the spring protective sleeve 42 is fixedly connected to the mounting base 2 via the locking block 421. The receiving groove 22 and the limiting fastening rib 25 therein provide additional support and fixation, thereby enhancing the stability of the spring assembly 4 during use and providing reliable support and fixation for the light-transmitting sun visor 1. The opening direction of the receiving groove 22 is the same as the installation direction of the mounting base 1. This design ensures that after the mounting base 1 is fixed to the vehicle body through the first fixing hole 21, the opening of the receiving groove 22 is blocked by the vehicle body, thereby ensuring the firm fixation of the spring protective sleeve 42 and preventing it from loosening or shifting during use.

[0030] In some embodiments of the present invention, such as Figure 4 As shown, the mounting base 2 is integrally formed with a through hole 9 and anti-crack holes 91. The through hole 9 communicates with the receiving groove 22 and is located on the same side of the first slot 24. The end of the rotating shaft 32 facing away from the rotating shaft seat 31 passes through the through hole 9 and is placed in the rotation space 5. Multiple anti-crack holes 91 are provided, and the multiple anti-crack holes 91 are evenly distributed around the circumference of the through hole 9. In this embodiment, the use of the through hole 9 allows the rotating shaft 32 to pass through the through hole 9 and enter the rotation space 5, ensuring the normal rotation of the rotating shaft 32 inside the mounting base 2. The use of multiple anti-crack holes 91 evenly distributed around the circumference of the through hole 9 has two advantages. First, the multiple anti-crack holes 91 can make the inner wall of the through hole 9 shrink evenly when under force, thereby improving the smoothness of the rotation of the rotating shaft 32. Second, it can improve the shrinkage resilience of the inner wall of the through hole 9, preventing the hole wall of the through hole 9 from bursting during rotation when the rotating shaft 32 is tightly fitted, thereby improving the service life of the sunshade.

[0031] In some embodiments of the present invention, such as Figure 3 and Figure 4 As shown, a flat section 321 is formed on the outer circumference of the rotating shaft 32. The rotating shaft 32 contacts the spring piece 41 through the flat section 321. The plane of the light-transmitting sunshade 1 is coplanar with the flat section 321. An acute angle θ exists between the flat section 321 and the top plane of the spring piece 41, where θ is greater than 5°. Using this structural design, when the light-transmitting sunshade 1 rotates, the rotating shaft 32 and the spring piece 41 maintain compressive contact and rotate. The compression of the rotating shaft 32 by the spring piece 41 provides a stable rotational friction force, achieving stability and positional holding of the light-transmitting sunshade 1 during rotation. Figure 6 and Figure 7 As shown, when the light-transmitting sun visor 1 rotates to be coplanar with the top plane of the spring piece 41, that is, when the flat section 321 of the rotating shaft 32 is in contact with the top plane of the spring piece 41, a relative acute angle of more than 5 degrees is formed between the flat section 321 and the top plane of the spring piece 41. This allows the light-transmitting sun visor 1 to suddenly change the drop from the roundness of the outer circumference of the rotating shaft 32 to the flat section 321 when it is rolled up to a certain position. Combined with the pushing force of the spring piece 41, the rotating shaft 32 rotates automatically, so that when the light-transmitting sun visor 1 rotates to a position close to being coplanar with the flat section 321, it automatically springs up and fits tightly against the roof of the vehicle. This achieves a tightened state where the spring piece 41 and the flat section 321 of the rotating shaft 32 are not in complete contact, ensuring good contact force between the light-transmitting sun visor 1 and the roof of the vehicle. This prevents the light-transmitting sun visor 1 from shaking or sagging when the vehicle is driving on bumpy roads, thus avoiding affecting the driver's normal driving.

[0032] In some embodiments of the present invention, such as Figure 3 and Figure 5As shown, the pivot seat 31 has a second slot 311 adapted to the connecting part 11 along its length direction. The connecting part 11 is engaged with the pivot seat 31 through the second slot 311. The connecting part 11 and the pivot seat 31 have matching second fixing holes 6. Multiple second fixing holes 6 are provided, spaced apart along the length direction of the pivot seat 31, and the number of second fixing holes 6 on the pivot seats 31 at both ends of the mounting base 2 is inconsistent. Thus, the engagement of the connecting part 11 with the second slot 311 effectively fixes the light-transmitting sunshade 1 and the pivot assembly 3, preventing them from loosening or falling off during use. The multiple second fixing holes 6 provide multiple fixing points, further providing reliable fixation and support for the light-transmitting sunshade 1. The inconsistent number of second fixing holes 6 on the pivot seats 31 at both ends of the mounting base 2 provides an error-proof installation function, reducing the possibility of errors during assembly and improving the accuracy and efficiency of installation. Furthermore, in this embodiment, the bottom of the second slot 311 is as follows... Figure 3 As shown, it is U-shaped. This structural design ensures that the connecting part 11 of the light-transmitting sunshade 1 can be fully fitted with the inner wall of the second slot 311 when inserted into it, thereby improving the aesthetics of the assembly of the pivot seat 31 and the light-transmitting sunshade 1 and ensuring that the overall appearance of the sunshade is smooth.

[0033] In some embodiments of the present invention, such as Figure 3 and Figure 5As shown, the rotating shaft assembly 3 also includes a first screw plug 33 and a retaining foot 34. Multiple retaining feet 34 are provided, and the multiple retaining feet 34 are spaced apart along the length direction of the rotating shaft seat 31 on the bottom surface of the first screw plug 33. The connecting part 11 and the rotating shaft seat 31 are provided with third fixing holes 7 corresponding to the retaining feet 34 one by one. The rotating shaft seat 31 is provided with a first recess 312 adapted to the first screw plug 33. The second fixing hole 6 and the third fixing hole 7 are provided on the bottom surface of the first recess 312. The retaining foot 34 passes through the third fixing hole 7 and is fixedly connected to the rotating shaft seat 31 and the light-transmitting sunshade 1 so that the first screw plug 33 covers the first recess 312. The multiple third fixing holes 7 are staggered and spaced apart with the second fixing holes 6 along the length direction of the rotating shaft seat 31, and the number of third fixing holes 7 on the rotating shaft seat 31 at both ends of the mounting base 2 is inconsistent. In this way, the structural design of the locking foot 34 fixing the first screw cap 33 into the first recess 312 hides the second fixing hole 6 and the third fixing hole 7, as well as the locking foot 34, fixing screws and other connecting parts in the first recess 312, improving the overall appearance and texture of the sunshade, making the mounting base 2 and the rotating shaft assembly 3 more refined and coordinated. On the other hand, the locking foot 34 passes through the third fixing hole 7 and is fixedly connected to the rotating shaft seat 31 and the light-transmitting sunshade 1. Combined with the structural design of multiple third fixing holes 7 staggered with the second fixing holes 6 along the length of the rotating shaft seat 31, the rigid connection between the light-transmitting sunshade 1 and the rotating shaft seat 31 can be enhanced, thereby further improving the stability of the sunshade structure. The structural design of the inconsistent number of third fixing holes 7 on the rotating shaft seats 31 at both ends of the mounting base 2 provides an error-proof function for installation, further reducing the possibility of errors in assembly and improving the accuracy and efficiency of installation.

[0034] In some embodiments of the present invention, such as Figure 1 and Figure 5 As shown, it also includes a second screw plug 8. The mounting base 2 has a second recess 23 that communicates with the first fixing hole 21 and is adapted to the second screw plug 8. The second screw plug 8 is engaged with the mounting base 2 through the second recess 23. In this embodiment, this design allows the second screw plug 8 to be embedded in the second recess 23, concealing the first fixing hole 21 and connecting components such as fixing screws, thus improving the overall aesthetics.

[0035] In some embodiments of the present invention, such as Figure 6 and Figure 7As shown, the rotating shaft 32 includes a rotating shaft body 322 and a rotating shaft core 323. The rotating shaft core 323 is made of galvanized steel wire and is embedded in the rotating shaft body 322 to form the rotating shaft 32 integrally through injection molding. In this way, by embedding the rotating shaft core 323 into the rotating shaft body 322 and forming the rotating shaft 32 integrally through injection molding, the structural strength of the rotating shaft 32 is effectively improved. The rotating shaft core 323, made of galvanized steel wire, has high strength and durability, which increases the load-bearing capacity and deformation resistance of the rotating shaft 32, making the entire rotating shaft 32 more robust and reliable. Injection molding of the rotating shaft 32 integrally simplifies the manufacturing process, reducing the number of parts and assembly steps. This design results in relatively low production costs for the rotating shaft 32 and improves manufacturing efficiency, saving time and human resources.

[0036] The low-transmittance sun visor provided in this embodiment is easy to install and does not obstruct the driver's or passenger's view while effectively blocking strong light. It is suitable for various vehicle models and improves the user experience for drivers and passengers.

[0037] In the description of this invention, it should be noted that the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A low-transmittance sunshade that can be easily installed, comprising a light-transmitting sunshade (1), a mounting base (2), a rotating shaft assembly (3) rotatably disposed at both ends of the mounting base (2), and a spring assembly (4) fixedly connected to the mounting base (2), characterized in that, At least one spring assembly (4) is provided. The edge of the light-transmitting sunshade (1) in the length direction is provided with a connecting part (11). The rotating shaft assembly (3) includes a rotating shaft seat (31) and a rotating shaft (32) fixedly connected to the rotating shaft seat (31). The connecting part (11) is screwed to the rotating shaft seat (31). The spring assembly (4) has a spring piece (41). One end of the rotating shaft (32) away from the rotating shaft seat (31) is housed in the spring assembly (4) and abuts against the spring piece (41). The force is fixed within the spring assembly (4), and the rotating shaft (32) is configured to rotate relative to the spring assembly (4) under the action of external force. The mounting base (2) is provided with a first fixing hole (21). The spring assembly (4) also includes a spring protective sleeve (42) and a spring plate limiting strip (43) fixed within the spring protective sleeve (42). The spring plate limiting strip (43) has limiting protrusions (431) integrally formed at both ends. The spring plate (41) is C-shaped and is secured by the protrusions (411) at both ends. The spring piece (41) is located between two limiting protrusions (431) and is housed in the spring protective sleeve (42), forming a rotation space (5) with the inner wall of the spring protective sleeve (42). The end of the rotating shaft (32) facing away from the rotating shaft seat (31) is housed in the rotation space (5) and is fixed in the spring protective sleeve (42) against the spring piece (41) to receive force. The mounting base (2) is provided with a receiving groove (22) and a first slot (24). The opening direction of the receiving groove (22) is the same as that of the mounting base (2). The installation directions are the same, and the inner wall of the receiving groove (22) is provided with multiple limiting fastening ribs (25) at intervals along its depth direction. The first slot (24) is opened on the inner wall of the receiving groove (22). The outer wall of the spring protective sleeve (42) is fixedly connected with a card block (241) that is compatible with the first slot (24). The spring protective sleeve (42) is housed in the receiving groove (22) through the limiting fastening ribs (25) so that the card block (241) is engaged with the mounting base (2) through the first slot (24). The rotating shaft (32) includes a rotating shaft body (322) and a rotating shaft core (323). The rotating shaft core (323) is galvanized steel wire and is embedded in the rotating shaft body (322) and the rotating shaft (32) is formed by injection molding.

2. The easily installable low-transmittance sunshade according to claim 1, characterized in that, The mounting base (2) is integrally formed with a through hole (9) and a crack-preventing hole (91). The through hole (9) is connected to the receiving groove (22) and is located on the same side of the first slot (24). The end of the rotating shaft (32) away from the rotating shaft seat (31) passes through the through hole (9) and is placed in the rotation space (5). There are multiple crack-preventing holes (91), and the multiple crack-preventing holes (91) are evenly distributed around the circumference of the through hole (9).

3. The easily installable low-transmittance sunshade according to claim 1, characterized in that, A flat section (321) is provided on the outer circumference of the rotating shaft (32). The rotating shaft (32) contacts the surface of the spring piece (41) through the flat section (321). The plane of the light-transmitting sunshade (1) is coplanar with the flat section (321). There is an acute angle θ between the flat section (321) and the top plane of the spring piece (41), and the θ is greater than 5°.

4. The easily installable low-transmittance sunshade according to claim 1, characterized in that, The rotating shaft seat (31) has a second slot (311) adapted to the connecting part (11) along its length direction. The connecting part (11) is engaged with the rotating shaft seat (31) through the second slot (311). The connecting part (11) and the rotating shaft seat (31) have matching second fixing holes (6). There are multiple second fixing holes (6), which are spaced apart along the length direction of the rotating shaft seat (31). The number of second fixing holes (6) on the rotating shaft seats (31) at both ends of the mounting base (2) is inconsistent.

5. The easily installable low-transmittance sunshade according to claim 4, characterized in that, The rotating shaft assembly (3) further includes a first screw plug (33) and retaining feet (34). Multiple retaining feet (34) are provided, spaced apart along the length of the rotating shaft seat (31) on the bottom surface of the first screw plug (33). The connecting part (11) and the rotating shaft seat (31) have third fixing holes (7) corresponding to the retaining feet (34). The rotating shaft seat (31) has a first countersunk groove (312) adapted to the first screw plug (33). Two fixing holes (6) and a third fixing hole (7) are opened on the bottom surface of the first sinker (312). The clamping foot (34) passes through the third fixing hole (7) and is fixedly connected to the rotating shaft seat (31) and the light-transmitting sunshade (1) so that the first screw plug (33) covers the first sinker (312). Multiple third fixing holes (7) are staggered with the second fixing holes (6) along the length direction of the rotating shaft seat (31), and the number of third fixing holes (7) on the rotating shaft seats (31) at both ends of the mounting base (2) is inconsistent.

6. The easily installable low-transmittance sunshade according to claim 1, characterized in that, It also includes a second screw plug (8), and the mounting base (2) has a second recess (23) that communicates with the first fixing hole (21) and is adapted to the second screw plug (8). The second screw plug (8) is engaged with the mounting base (2) through the second recess (23).

7. The easily installable low-transmittance sunshade according to claim 1, characterized in that, The light-transmitting sunshade (1) is made of wear-resistant PC injection molding with a light transmittance of 3.3%.

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