Sun shield rotating shaft mounting structure

Abstract

The utility model provides a sun shield rotating shaft mounting structure, and belongs to the technical field of automobile parts. The sun shield rotating shaft mounting structure comprises a mounting seat and a spring, the two supporting plates of the mounting base are arranged in the inner cavity of the sun shield body, the auxiliary connecting parts connected to the cavity wall of the inner cavity are arranged on the opposite sides of the two supporting plates, and the middle connecting part is arranged between the two supporting plates. The structural strength and the mounting stability of the two supporting plates are improved through the auxiliary connecting part and the middle connecting part, so that the rotating shaft rotationally mounted on the two supporting plates is more stable and reliable to mount, and the risk of breakage of the supporting plates after long-time use is reduced; the installation stability and effectiveness of the spring are improved, the rotating shaft can rotate more stably and reliably relative to the sun visor body, normal use of the sun visor is guaranteed, and the service life of the sun visor is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a sun visor rotating shaft installation structure. Background Art

[0002] The sun visor is a sunshade structure on the car, usually arranged on the inside of the windshield. It can change its coverage of the windshield or side windows through its flipping movement, thereby blocking external light, avoiding the influence of external light on the field of vision, and improving driving safety and comfort.

[0003] At present, in order to ensure the normal flipping movement of the sun visor, a rotating shaft is arranged between the sun visor body and the top of the frame, that is, one end of the rotating shaft is installed on the top of the frame, and the other end of the rotating shaft is connected to the sun visor body. For example, the automobile sun visor disclosed in patent CN111114251A has a sun visor body, the upper end of the sun visor body is connected to an L-shaped rotating shaft, the L-shaped rotating shaft is connected to a supporting seat, and the supporting seat is fixed on the car, so that the sun visor body is installed on the car through the L-shaped rotating shaft and the supporting seat. In addition, a spring is arranged between the rotating shaft and the sun visor body, and the rotating shaft is clamped by the spring, providing a pre-tightening force for the rotation of the rotating shaft. When the rotating shaft and the sun visor body rotate relative to each other, they can stay at any position, meeting the state adjustment requirements of the sun visor body. Although the above structure can meet the normal use requirements of the sun visor, the structure for installing the rotating shaft and the spring on the sun visor body has only two sheets arranged relatively spaced apart, and both sheets are structures protruding from the inner cavity of the sun visor body, and are only connected by the intersection of the contours between the two. As the use time of the sun visor increases, the number of rotations of the rotating shaft on the sun visor body continues to accumulate, and the two sheets on the sun visor used to install the rotating shaft and the spring are very easy to crack, thereby affecting the installation stability and relative rotation between the rotating shaft and the sun visor body, resulting in the sun visor flipping problem or stuck or affecting the normal use of the sun visor. Summary of the invention

[0004] In view of the above-mentioned problems existing in the prior art, it is now intended to provide a sun visor shaft mounting structure, so that a mounting seat is arranged in the inner cavity of the sun visor body, and the mounting seat includes two support plates, an auxiliary connecting part and an intermediate connecting part. The two support plates are arranged at intervals and in parallel, and auxiliary connecting parts are provided on the opposite sides of the two support plates. At the same time, an intermediate connecting part is also provided between the two support plates. The structural strength of the mounting seat is enhanced by the auxiliary connecting part and the intermediate connecting part, and the risk of breakage after long-term use is reduced. In addition, the lower end of the spring can be sleeved outside the intermediate connecting part, which provides an installation basis for the installation of the spring between the two support plates, and also limits the relative movement of the spring, thereby ensuring the stability and reliability of the installation of the shaft on the sun visor body, ensuring the normal use of the sun visor, and extending the service life of the sun visor.

[0005] The specific technical solutions are as follows:

[0006] A sun visor shaft mounting structure is arranged between a sun visor body and a shaft, one end of the sun visor body has an inner cavity, one end of the shaft passes through a side wall of the sun visor body and then extends into the inner cavity, and has the following features, including:

[0007] The mounting seat is arranged in the inner cavity of the sun visor body, and the mounting seat includes two support plates, two auxiliary connection parts and an intermediate connection part. One side of the two support plates is fixedly mounted on the cavity wall of the inner cavity. The two support plates are arranged in parallel and at intervals. The lower ends of the two support plates and on the opposite sides are provided with extended auxiliary connection parts, and the two auxiliary connection parts are fixedly connected to the cavity wall of the inner cavity. At the same time, an intermediate connection part is also provided between the two support plates, and the two ends of the intermediate connection part are respectively fixedly connected to the lower ends of the two support plates, and one end of the rotating shaft extending into the inner cavity passes through the two support plates in sequence and is rotatably connected to the two support plates;

[0008] The spring is an annular spring sheet, and the spring is arranged between the two support plates. One end of the spring is sleeved outside the rotating shaft, and the other end of the spring is sleeved outside the middle connecting part.

[0009] The above-mentioned sun visor shaft installation structure also includes a limiting tongue, which is arranged on an auxiliary connecting part corresponding to the end of the shaft extending into the inner cavity. At the same time, a circle of annular limiting groove is provided on the outer side wall of the end of the shaft extending into the inner cavity, and one end of the limiting tongue extends into the limiting groove.

[0010] In the above-mentioned sun visor shaft installation structure, the limiting tongue is a bending structure, and one end of the limiting tongue that cooperates with the limiting groove is bent toward the direction in which the shaft extends into the inner cavity and then extends into the limiting groove.

[0011] The above-mentioned sun visor shaft installation structure also includes a spring fixing structure, which includes two protrusions, the two protrusions are respectively arranged on the opposite side of the two support plates, and the two protrusions are located at the upper end of the support plate, and the two protrusions are respectively located on both sides of one end of the spring sleeve outside the shaft, and the shaft is located between the protrusions and the middle connecting part.

[0012] In the above-mentioned sun visor shaft installation structure, the sun visor body, the installation seat and the spring are an integrated injection molding structure.

[0013] The above-mentioned sun visor shaft installation structure, wherein a first limiting plane is provided on the outer wall of the shaft located between the two support plates, and a second limiting plane corresponding to the first limiting plane is provided on the inner wall of the spring, and when the shaft rotates, the first limiting plane is in contact with or staggered with the second limiting plane.

[0014] The above-mentioned sun visor shaft mounting structure, wherein the spring is formed by bending and connecting the two ends of an elastic sheet toward the same side, both ends of the elastic sheet are provided with hooks and are bent toward the opposite side and overlapped with each other, and the front end of the hook at one end of the elastic sheet is provided with an extended surround, and the surround is wrapped outside the hook at the other end.

[0015] In the above-mentioned sun visor shaft installation structure, a recessed bayonet is provided on the middle connecting portion, and a latch tongue extending toward the bayonet is provided at the lower end of the spring.

[0016] In the above-mentioned sun visor shaft installation structure, the latch is formed by stamping one end of the elastic sheet.

[0017] In the above-mentioned sun visor shaft installation structure, the first limiting plane is a structure recessed on the outer wall of the shaft, and avoidance gaps are provided on the spring and on both sides of the second limiting plane.

[0018] The positive effects of the above technical solution are:

[0019] The above-mentioned sun visor shaft installation structure is provided with a mounting seat including two support plates, an auxiliary connecting part and an intermediate connecting part in the inner cavity of the sun visor body, and the auxiliary connecting parts are provided at the lower ends of the two support plates and on the side opposite to each other of the two support plates. At the same time, an intermediate connecting part is provided at the lower ends of the two support plates and between the two support plates, so that the two support plates are not only connected to the sun visor body by themselves, but also connected to the sun visor body through the auxiliary connecting parts. At the same time, the two support plates also form an integral structure through the intermediate connecting part, which effectively improves the structural strength of the two support plates, so that when the rotating shaft is installed on the sun visor body through the two support plates, the stability and reliability are higher, and the risk of breakage after long-term use is reduced. In addition, the intermediate connecting part is also provided in the lower end of the spring, which provides a supporting basis for the installation of the spring between the two support plates, and also limits the relative movement of the spring along the axial direction of the rotating shaft, thereby improving the reliability and effectiveness of the spring installation, so that the rotating shaft can be installed on the sun visor body more stably and reliably, ensuring that the sun visor can be used normally and extending the service life of the sun visor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic assembly diagram of a sun visor shaft installation structure according to an embodiment of the utility model from one perspective;

[0021] Figure 2 It is a schematic assembly diagram of another viewing angle of an embodiment of a sun visor rotating shaft installation structure of the utility model;

[0022] Figure 3 This is a structural diagram of a mounting base of a preferred embodiment of the utility model;

[0023] Figure 4 This is a structural diagram of a spring according to a preferred embodiment of the utility model.

[0024] In the accompanying drawings: 1. sun visor body; 11. inner cavity; 2. rotating shaft; 21. limiting groove; 22. first limiting plane; 3. mounting seat; 31. supporting plate; 32. auxiliary connecting part; 33. intermediate connecting part; 34. limiting tongue; 35. spring fixing structure; 331. bayonet; 351. protrusion; 4. spring; 41. second limiting plane; 42. hook; 43. surround; 44. latch tongue; 45. avoidance gap. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the following embodiments are combined with the attached Figure 1 To Attachment Figure 4 The technical solution provided by the utility model is described in detail, but the following content is not intended to limit the utility model.

[0026] Figure 1 It is a schematic assembly diagram of a sun visor shaft installation structure according to an embodiment of the utility model from one perspective; Figure 2 FIG. 1 is a schematic assembly diagram of another perspective of an embodiment of a sunshade shaft mounting structure of the utility model. Figure 1 and Figure 2 As shown, the sun visor shaft installation structure provided in this embodiment is arranged between the sun visor body 1 and the shaft 2. At this time, one end of the sun visor body 1 has an inner cavity 11, and one end of the shaft 2 passes through the side wall of the sun visor body 1 and then extends into the inner cavity 11, providing conditions for the connection between the shaft 2 and the sun visor body 1. At this time, the sun visor shaft 2 installation structure provided in this embodiment also includes: a mounting seat 3 and a spring 4. The mounting seat 3 realizes the rotation installation of one end of the shaft 2 extending into the inner cavity 11, and the spring 4 provides a pre-tightening force for the shaft 2, so that the relative rotation of the shaft 2 and the sun visor body 1 can be temporarily fixed at any position, ensuring that the state of the sun visor body 1 is maintained when it is flipped.

[0027] Figure 3 This is a structural diagram of a mounting base of a preferred embodiment of the utility model. Figure 1 , Figure 2 as well as Figure 3As shown, the mounting seat 3 is arranged in the inner cavity 11 of the sun visor body 1, and at this time, the mounting seat 3 includes two support plates 31, two auxiliary connection parts 32 and an intermediate connection part 33. During installation, one side of the two support plates 31 is fixedly mounted on the cavity wall of the inner cavity 11, so that the two support plates 31 themselves can be connected through the intersection of the contour of the cavity wall of the inner cavity 11, which is the same as the installation structure of the traditional shaft 2. In addition, the two support plates 31 are arranged in parallel and at intervals, and an extended auxiliary connection part 32 is provided at the lower end of the two support plates 31 and on the opposite side of the two support plates 31, that is, an extended auxiliary connection part 32 is provided at the lower end of each support plate 31, and the connection part of the corresponding support plate 31 is expanded by the auxiliary connection part 32, so that during the subsequent installation, the two auxiliary connection plates are fixedly connected to the cavity wall of the inner cavity 11, that is, the two auxiliary connection parts 32 provide auxiliary reinforcement for the installation of each connection plate in the inner cavity 11, so that the structural strength of the two connection plates themselves is higher, and the installation in the inner cavity 11 is more stable and reliable. At the same time, an intermediate connection part 33 is also provided between the two support plates 31, and at the same time, the two ends of the intermediate connection part 33 are respectively fixedly connected to the lower ends of the two support plates 31, that is, the two support plates 31 are formed into an integral structure by the intermediate connection part 33, which further improves the structural strength of the two support plates 31, and at the same time, it also provides an installation basis for the subsequent installation of the spring 4. At this time, one end of the rotating shaft 2 extending into the inner cavity 11 passes through the two support plates 31 in turn and is rotatably connected to the two support plates 31. The structural strength and installation stability of the two support plates 31 are strengthened by the auxiliary connecting part 32 and the intermediate connecting part 33. When the rotating shaft 2 is rotatably installed on the two support plates 31, the rotation of the rotating shaft 2 is ensured while the reliability and stability of the installation of the rotating shaft 2 can be improved, and the structural design is more reasonable.

[0028] Figure 4 This is a structural diagram of a spring in a preferred embodiment of the utility model. Figure 1 , Figure 2 as well as Figure 4 As shown, the spring 4 is an annular spring sheet, and a cross-sectional shape can be approximately regarded as an "O" shape. During installation, the spring 4 is set between the two support plates 31. At the same time, the shaft 2 passes through the hollow of the spring 4, and one end of the spring 4 is sleeved outside the shaft 2, which provides conditions for the cooperation between the spring 4 and the shaft 2, so that the spring 4 can provide a pre-tightening force for the shaft 2. In addition, the other end of the spring 4 is sleeved outside the middle connecting portion 33, that is, the spring 4 is installed on the mounting seat 3 through the middle connecting portion 33, ensuring that the spring 4 can be stably installed in the inner cavity 11 of the sun visor body 1 and reliably cooperate with the shaft 2.

[0029] Specifically, a limiting tongue 34 is also provided on the mounting seat 3. At this time, the limiting tongue 34 is provided on an auxiliary connecting portion 32, and the auxiliary connecting portion 32 is an auxiliary connecting portion 32 corresponding to the end of the rotating shaft 2 extending into the inner cavity 11. At the same time, a circle of annular limiting grooves 21 are also provided on the outer side wall of the end of the rotating shaft 2 extending into the inner cavity 11. During installation, one end of the limiting tongue 34 is extended into the limiting groove 21. The movement of the rotating shaft 2 along its axial direction can be limited by the cooperation of the limiting tongue 34 and the limiting groove 21, thereby preventing the rotating shaft 2 from coming off the mounting seat 3, improving the reliability of the rotating shaft 2 after installation, and also adapting to the rotation of the rotating shaft 2 by the movement of the limiting tongue 34 in the limiting groove 21, ensuring that the sun visor body 1 can normally flip on the rotating shaft 2, and the structural design is more reasonable.

[0030] More specifically, the limiting tongue 34 used to cooperate with the limiting groove 21 on the rotating shaft 2 is a bent structure as a whole. At this time, the end of the limiting tongue 34 that cooperates with the limiting groove 21 is bent toward one side, and the bending direction of the end of the limiting tongue 34 is the direction in which the rotating shaft 2 extends into the inner cavity 11, that is, the bending direction of the limiting tongue 34 is the direction in which the rotating shaft 2 is inserted into the inner cavity 11, and the bent end of the limiting tongue 34 extends into the limiting groove 21, so that the limiting tongue 34 can be limited by the end to prevent the rotating shaft 2 from retreating. In addition, the bent end of the limiting tongue 34 can also serve as an insertion guide for the rotating shaft 2, so that the end of the rotating shaft 2 can smoothly pass over the limiting tongue 34 and the limiting tongue 34 is inserted into the limiting groove 21, which facilitates the installation of the rotating shaft 2 on the mounting seat 3.

[0031] More specifically, in order to improve the installation stability of the spring 4 between the two support plates 31, a spring 4 fixing structure 35 is also provided between each support plate 31. In addition, the spring 4 fixing structure 35 includes two protrusions 351. During installation, the two protrusions 351 are respectively provided on the opposite sides of the two support plates 31, and the two protrusions 351 are located at the upper ends of the support plates 31. The two protrusions 351 form a support and limiting structure at the upper ends of the corresponding support plates 31, so that when the spring 4 is subsequently installed between the two support plates 31, the two protrusions 351 can be respectively located on both sides of one end of the spring 4 sleeved outside the rotating shaft 2, thereby supporting and limiting both sides of the end of the spring 4. In addition, the rotating shaft 2 is located between the protrusion 351 and the intermediate connecting portion 33, so as to prevent the end of the spring 4 that cooperates with the rotating shaft 2 from swinging, so that the two ends of the spring 4 can be respectively limited by the intermediate connecting portion 33 and the spring 4 fixing structure 35, thereby improving the installation stability of the spring 4 on the mounting seat 3.

[0032] More specifically, the sun visor body 1 and the support plate 31, auxiliary connecting part 32, middle connecting part 33, spring 4 fixing structure 35 and spring 4 in the mounting seat 3 are an integrated injection molding structure, which is not only convenient for processing and manufacturing, but also can ensure the integrity of the structure, so that the connection strength between the structures is higher and the connection effect is better.

[0033] More specifically, a first limiting plane 22 is also arranged along the tangent direction on the outer wall of the portion of the rotating shaft 2 located between the two support plates 31. At the same time, a second limiting plane 41 corresponding to the first limiting plane 22 is arranged on the inner wall of one end of the spring 4 that cooperates with the rotating shaft 2, so that when the rotating shaft 2 subsequently rotates relative to the spring 4, the first limiting plane 22 and the second limiting plane 41 can be aligned or staggered, that is, when the sun visor body 1 is in a retracted state, the first limiting plane 22 and the second limiting plane 41 are aligned to prevent the sun visor body 1 from accidentally rotating when there is no external force, and the state maintenance effect is better. When the sun visor body 1 needs to be flipped, the operator actively flips the sun visor body 1, so that the sun visor body 1 can rotate relative to the rotating shaft 2, thereby making the first limiting plane 22 and the second limiting plane 41 staggered, which provides convenience for the subsequent continued adjustment of the sun visor body 1.

[0034] More specifically, the spring 4 as an annular spring sheet is obtained by bending and connecting the two ends of an elastic sheet toward the same side, and the processing raw materials are easy to obtain and the processing technology is simple. At this time, both ends of the elastic sheet are provided with hooks 42 and bent toward the opposite side, and the two hooks 42 are superimposed on each other, so that the two ends of the elastic sheet are connected through the hooks 42. In addition, the front end of the hook 42 at one end of the elastic sheet is provided with an extended enclosure 43. At this time, the enclosure 43 is wrapped around the hook 42 at the other end, that is, the enclosure 43 is further formed to prevent the two ends of the elastic sheet from separating and causing the spring 4 to have insufficient pre-tightening force on the rotating shaft 2, thereby avoiding the problem of the sun visor body 1 being unstable when the state is maintained due to the insufficient pre-tightening force of the spring 4 on the rotating shaft 2, and the structural design is more reasonable. It is worth pointing out that the spring 4 sheet can be made of spring 4 steel, which can have good elasticity and meet the use requirements.

[0035] More specifically, a recessed bayonet 331 is provided on the middle connecting portion 33 of the mounting seat 3. At the same time, a latch tongue 44 extending toward the bayonet 331 is provided at the lower end of the spring 4. The mutual limitation of the latch tongue 44 and the bayonet 331 can prevent the spring 4 from moving axially along the rotating shaft 2 and causing the first limiting plane 22 and the second limiting plane 41 to be misaligned. This avoids the problem of failure of the first limiting plane 22 and the second limiting plane 41 to match each other due to the misalignment of the first limiting plane 22 and the second limiting plane 41, and the structural design is more reasonable.

[0036] More specifically, the tongue 44 of the spring 4 extending into the bayonet 331 is formed by stamping one end of the elastic sheet, making full use of the material of the spring 4 itself. It is not only easy to process and has a high structural strength, but also does not require additional materials, thereby reducing manufacturing costs and saving resources.

[0037] More specifically, the first limiting plane 22 on the rotating shaft 2 is a structure recessed on the outer wall of the rotating shaft 2, which facilitates processing and reduces the weight of the rotating shaft 2. At the same time, avoidance notches 45 are provided on the spring 4 and on both sides of the second limiting plane 41. Since the first limiting plane 22 is a structure recessed on the outer wall of the rotating shaft 2, both ends of the first limiting plane 22 are higher than the first limiting plane 22. If the avoidance notches 45 are not provided at both ends of the second limiting plane 41, the high parts of the two ends of the first limiting plane 22 will contact the second limiting plane 41, so that the first limiting plane 22 cannot contact the second limiting plane 41. When the avoidance notches 45 are provided at both ends of the second limiting plane 41, the high parts of the two ends of the first limiting plane 22 can enter the avoidance notches 45, so that the first limiting plane 22 and the second limiting plane 41 can contact each other, ensuring the limiting effect.

[0038] The sun visor shaft installation structure provided in the present embodiment includes a mounting seat 3 and a spring 4; the two support plates 31 of the mounting seat 3 are arranged in the inner cavity 11 of the sun visor body 1, and auxiliary connecting parts 32 connected to the cavity wall of the inner cavity 11 are arranged on the opposite sides of the two support plates 31, and an intermediate connecting part 33 is arranged between the two support plates 31. The auxiliary connecting part 32 and the intermediate connecting part 33 are used to improve the structural strength and installation stability of the two support plates 31, so that the installation of the rotating shaft 2 rotatably installed on the two support plates 31 is more stable and reliable, and the risk of the support plate 31 breaking after long-term use is reduced. At the same time, the intermediate connecting part 33 is used as an installation limit carrier for the lower end of the spring 4, which improves the stability and effectiveness of the installation of the spring 4, so that the rotation of the rotating shaft 2 relative to the sun visor body 1 can be more stable and reliable, ensuring the normal use of the sun visor and extending the service life of the sun visor.

[0039] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A sun visor shaft mounting structure, arranged between a sun visor body and a shaft, wherein one end of the sun visor body has an inner cavity, and one end of the shaft passes through a side wall of the sun visor body and then extends into the inner cavity, characterized in that: include: A mounting seat, wherein the mounting seat is arranged in the inner cavity of the sun visor body, the mounting seat comprises two support plates, two auxiliary connection parts and an intermediate connection part, one side of the two support plates is fixedly mounted on the cavity wall of the inner cavity, the two support plates are arranged in parallel and at intervals, the lower ends of the two support plates and on the opposite sides are provided with the extended auxiliary connection parts, and the two auxiliary connection parts are fixedly connected to the cavity wall of the inner cavity, and at the same time, the intermediate connection part is also provided between the two support plates, and the two ends of the intermediate connection part are respectively fixedly connected to the lower ends of the two support plates, and one end of the rotating shaft extending into the inner cavity passes through the two support plates in sequence and is rotatably connected to the two support plates; A spring, wherein the spring is an annular spring sheet, and the spring is arranged between the two support plates, one end of the spring is sleeved outside the rotating shaft, and the other end of the spring is sleeved outside the middle connecting portion.

2. The sun visor shaft installation structure according to claim 1, characterized in that: It also includes a limiting tongue, which is arranged on an auxiliary connecting portion corresponding to the end of the rotating shaft extending into the inner cavity. At the same time, a ring-shaped limiting groove is provided on the outer side wall of the end of the rotating shaft extending into the inner cavity, and one end of the limiting tongue extends into the limiting groove.

3. The sun visor shaft installation structure according to claim 2, characterized in that: The limiting tongue is a bent structure, and one end of the limiting tongue that cooperates with the limiting groove is bent toward the direction in which the rotating shaft extends into the inner cavity and then extends into the limiting groove.

4. The sun visor shaft installation structure according to claim 1, characterized in that: It also includes a spring fixing structure, which includes two protrusions, which are respectively arranged on opposite sides of the two support plates, and the two protrusions are located at the upper ends of the support plates, and the two protrusions are respectively located on both sides of one end of the spring sleeve outside the rotating shaft, and the rotating shaft is located between the protrusions and the middle connecting part.

5. The sun visor shaft installation structure according to claim 1, characterized in that: The sun visor body, the mounting seat and the spring are an integrated injection-molded structure.

6. The sun visor shaft installation structure according to claim 1, characterized in that: A first limiting plane is arranged on the outer wall of the rotating shaft located between the two supporting plates, and a second limiting plane corresponding to the first limiting plane is arranged on the inner wall of the spring, and when the rotating shaft rotates, the first limiting plane is in contact with or staggered with the second limiting plane.

7. The sun visor shaft installation structure according to claim 1, characterized in that: The spring is formed by bending and connecting two ends of an elastic sheet toward the same side, and both ends of the elastic sheet are provided with hooks and are bent toward the opposite side and overlapped with each other, and the front end of the hook at one end of the elastic sheet is provided with an extended surround, and the surround is wrapped outside the hook at the other end.

8. The sun visor shaft installation structure according to claim 7, characterized in that: The middle connecting portion is provided with a recessed bayonet, and the lower end of the spring is provided with a latch tongue extending toward the bayonet.

9. The sun visor shaft installation structure according to claim 8, characterized in that: The latch tongue is formed by punching one end of the elastic sheet.

10. The sun visor shaft installation structure according to claim 6, characterized in that: The first limiting plane is a structure that is recessed on the outer wall of the rotating shaft, and avoidance notches are provided on the spring and on both sides of the second limiting plane.

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