Shaft sleeve of automobile sun shield

Abstract

The utility model relates to a shaft sleeve of an automobile sun shield, which comprises a wrapping part, a buckling foot integrally extending from the lower end of the wrapping part, a reinforcing rib arranged behind the buckling foot, and a leading-in part and a small dismounting hole arranged below the buckling foot, a cavity is formed in the coating part, a central positioning guide rib is arranged at the cavity, and the central positioning guide rib is used for being connected with the framework body in a clamped mode; and a fixed shaft integrally extends out of the middle of the coating part. The buckling feet integrally extend out of the lower end of the wrapping part and extend into the clamping part of the framework body, so that fixing in the vertical direction is achieved; a central positioning guide rib of the shaft sleeve is inserted into a central positioning groove of the framework body for close fit to realize front-back and left-right fixation; when the shaft sleeve needs to be taken out from the framework body, a pin is jacked into the small dismounting hole, and then the shaft sleeve can be taken out. According to the novel structure, not only is the buckling strength of the shaft sleeve and the framework body enhanced, but also the shaft sleeve is very convenient to disassemble.

Description

Technical Field

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

[0002] In order to avoid direct exposure of drivers and passengers to strong light such as sunlight and lamplight, they are usually equipped with sun visors. Automobile sun visors generally adopt a rotating structure, which requires the sun visor to have the function of flipping around the fixed seat. This flipping function is mainly achieved by flipping the sleeve. The sleeve is generally assembled by clamping the frame body, which is used to improve the matching accuracy between the sleeve and the fixed seat, the consistency of the diameter of the sleeve shaft, and to ensure the coaxiality of the flipping and product reliability.

[0003] Publication (announcement) number: CN112977014A, patent title: A sun visor sleeve structure for automobiles, which introduces in the background technology that "

[0003] Traditional snap-on automobile sun visor sleeves mainly have the following defects: the lack of a limiting structure makes it easy to shake during the flipping process, resulting in eccentricity of the sleeve, the buckle strength is insufficient and it is easy to break, and there is a risk of slipping out and failure, and at the same time, there is no anti-slip structure at the sleeve snap-in point, and the fabric is easy to slip out." It solves these problems through the technical solution of "

[0005] In order to achieve the above-mentioned purpose, the present invention provides a sun visor sleeve structure for automobiles, the main body of the connector consists of two parts, A and B, which are connected by part C in the middle. Finally, it is formed by integral injection molding. Part C has four horizontal limit positions in total, which cooperate with the skeleton to limit the sleeve body in the horizontal direction. The vertical buckle cooperates with the skeleton body to cooperate and limit it in the vertical direction, so that the sleeve body is snapped onto the skeleton."

[0004] Although this structure is limited in the horizontal and vertical directions, increasing the buckle strength and preventing the sleeve from falling off the frame body after being stressed, there is still room for further improvement. Summary of the invention

[0005] The purpose of the utility model is to provide a shaft sleeve for a car sun visor to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model is achieved through the following technical measures: a shaft sleeve of a car sun visor, which includes a covering portion, the covering portion is used for crimping with a frame body, two buckle feet are integrally extended from the lower end of the covering portion, the buckle feet are in the shape of a "vertical hook", the two buckle feet are symmetrically distributed back to back with each other, a reinforcing rib is provided at the rear of the vertical portion, a wedge-shaped introduction portion is provided at the hook portion, and a disassembly hole is provided at the hook portion; a cavity is provided inside the covering portion, a center positioning guide rib is provided at the cavity, and the center positioning guide rib is used for clamping with the frame body; a fixed shaft is integrally extended from the middle of the covering portion, the interior of the fixed shaft is a hollow hole, and two rows of staggered staples are provided around the covering portion and the fabric.

[0007] Compared with the prior art, the advantages of the utility model are: two buckle feet are integrally extended from the lower end of the covering part and inserted into the clamping part of the frame body to achieve fixation in the up and down directions; the central positioning guide rib of the sleeve is inserted into the central positioning groove of the frame body to achieve front, back, left and right fixation; the disassembly hole on the sleeve can be used to push the pin into the disassembly hole when the sleeve is to be taken out from the frame body. This new structure not only enhances the buckle strength of the sleeve and the frame body to prevent accidental disengagement, but also makes it convenient to disassemble the sleeve.

[0008] As an improvement of the utility model, the reinforcing ribs are oblique reinforcing ribs, two of which are respectively arranged at the two side edges of the vertical part of the buckle foot. The purpose of selecting this design is that the oblique reinforcing ribs can strengthen the strength of the buckle foot without increasing the overall thickness of the buckle foot, and the closer to the root, the greater the bearing force. The oblique reinforcing ribs are arranged on the two side edges, which can withstand greater forces than those arranged in the middle and other parts.

[0009] As an improvement of the present invention, the front end of the center positioning guide rib near the buckle foot is wedge-shaped, and the center positioning guide rib is zero-fit when connected with the center positioning groove on the skeleton body. The purpose of selecting this design: the center positioning guide rib is set in a wedge shape near the front end of the buckle foot, and can be smoothly inserted when inserted into the center positioning groove of the skeleton body. The middle section and the rear end of the center positioning guide rib have the same thickness, and are zero-fit when connected with the center positioning groove on the skeleton body. Zero fit is equivalent to transition fit, so as to achieve the purpose of firm positioning.

[0010] As an improvement of the utility model, the length of the center positioning guide rib is greater than the diameter of the fixed shaft. The purpose of selecting this design is that when the automobile sun visor is flipped, it rotates with the fixed shaft of the sleeve as the center line. The longer the center positioning guide rib is, the larger its contact area is, and the better the fixing effect is.

[0011] As an improvement of the utility model, the interior of the fixed shaft is a hollow hole. The purpose of selecting this design is to design the fixed shaft of the sleeve to be hollow to ensure uniform wall thickness, avoid deformation caused by injection molding, and ensure diameter consistency and appearance quality.

[0012] As an improvement of the utility model, two rows of staggered clamps are arranged around the covering part and the fabric. The purpose of selecting this design is to achieve a firm clamping claw of the fabric to prevent it from being pulled out under force during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0014] In the attached picture:

[0015] Figure 1 The utility model is a three-dimensional diagram of the shaft sleeve of the automobile sun visor.

[0016] Figure 2 This is a stereoscopic view of the skeleton body and the shaft sleeve of the utility model before installation.

[0017] Figure 3 It is a three-dimensional diagram of the skeleton body described in the utility model.

[0018] Figure 4 It is a cross-sectional view of the shaft sleeve described in the utility model.

[0019] Figure 5 The utility model is an exploded view of the automobile sun visor.

[0020] Figure 6 It is a vertical cross-sectional view of the skeleton body and the shaft sleeve after installation according to the utility model.

[0021] Figure 7 It is a transverse cross-sectional view of the skeleton body and the shaft sleeve after installation according to the utility model.

[0022] Explanation of the reference numerals in the accompanying drawings: 1. Covering part; 2. Skeleton body; 3. Buckle foot; 4. Introduction part; 5. Disassembly hole; 6. Center positioning guide rib; 7. Fixed shaft; 8. Oblique reinforcement rib; 9. Center positioning groove; 10. Bushing; 11. Disassembly reserved hole; 12. Clamping part; 13. Skeleton assembly; 14. Slide assembly; 15. Upper EPP block; 16. Lower EPP block; 17. Fabric cover; 18. Rotating shaft assembly; 19. Hollow hole; 20. Staple. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0024] Example 1

[0025] Please refer to Figure 1 -7, this embodiment provides a car sun visor sleeve, which is applied to the car sun visor, please refer to Figure 5 The automobile sun visor is composed of a frame assembly 13, a slide assembly 14, an upper EPP block 15, a lower EPP block 16, a fabric cover 17 and a rotating shaft assembly 18, wherein the shaft sleeve 10 is fixed on the frame body 2 to form the frame assembly 13.

[0026] In the embodiments of the present utility model application, please refer to Figure 1 The sleeve 10 includes a covering portion 1, which is used for crimping with the skeleton body 2. The covering portion 1 has an appearance of a compressed version of a "saddle" shape, and is hollow inside. When assembled with the skeleton body 2, interference fitting is required. The outer layer of the skeleton body 2 is mostly provided with a fabric cover. The interference amount varies according to the compressible thickness of the fabric. The interference amount of ordinary fabric is 0.5mm. For fabrics with high compressibility, the interference amount should be increased to 1.0mm. This can ensure that the fabric is compacted and prevented from falling out.

[0027] Two buckle feet 3 are integrally extended from the lower end of the covering portion 1. The buckle feet 3 are in the shape of a "vertical hook". The two buckle feet 3 are symmetrically distributed back to back with each other. Oblique reinforcing ribs 8 are provided at the back of the vertical portion. There are two oblique reinforcing ribs, which are respectively provided at the two side edges of the vertical portion of the buckle feet 3. Such oblique reinforcing ribs 8 can strengthen the strength of the buckle feet 3 without increasing the overall thickness of the buckle feet 3. The closer to the root, the greater the bearing force. The buckle feet 3 of the shaft sleeve 10 are tightly buckled under the clamping portion 12 of the main frame. The fit between the buckle feet 3 and the clamping portion 12 must be more than 2mm to ensure the clamping strength. Oblique reinforcing ribs 8 are provided on the edges of both sides, which can withstand greater forces than those provided in the middle and other parts. A wedge-shaped introduction portion 4 is provided on the hook portion, and a disassembly hole 5 is provided on the hook portion.

[0028] Please refer to Figure 1 , the interior of the fixed shaft 7 is a hollow hole 19. The fixed shaft 7 of the sleeve is designed to be hollow to ensure uniform wall thickness of the structure, avoid deformation caused by injection molding, and ensure diameter consistency and appearance quality.

[0029] Furthermore, two rows of staggered staples 20 are arranged around the sleeve 10 and the fabric. The height of the staples 20 is designed to be 0.3-0.5 mm, which ensures smooth installation while firmly clamping the fabric to prevent it from falling out due to force during use.

[0030] In the embodiments of the present utility model application, please refer to Figure 3 A disassembly reserved hole 11 is provided on the frame body 2 that matches the sleeve 10. The hole 11 is located below the clamping portion 12 and is a square hole. After the sleeve 10 is installed with the frame body 2, the disassembly hole 5 on the sleeve 10 can be seen from the disassembly reserved hole 11. When the sleeve 10 is to be removed, a tool such as a pin is used to push into the disassembly hole 5 to take out the sleeve 10. A center positioning groove 9 is provided on the frame body 2 to position the center positioning guide rib 6 of the sleeve 10.

[0031] In the embodiments of the present utility model application, please refer to Figure 1 , Figure 6 as well as Figure 7 The front end of the center positioning guide rib 6 near the buckle foot 3 is wedge-shaped, and the front end of the center positioning guide rib 6 near the buckle foot 3 is set in a wedge shape, and when inserted into the center positioning groove 9 of the frame body 2, it can be smoothly inserted. The middle section and the rear end of the center positioning guide rib 6 have the same thickness, and when connected with the center positioning groove 9 on the frame body 2, it is zero fit, which is equivalent to transition fit, so as to achieve the purpose of firm positioning.

[0032] In the embodiments of the present utility model application, please refer to Figure 4 The length of the center positioning guide rib 6 is greater than the diameter of the fixed shaft 7. When the automobile sun visor is turned over, it rotates with the fixed shaft 7 of the sleeve 10 as the center line. The longer the center positioning guide rib 6 is, the larger its contact area is, and the better the fixing effect is.

[0033] The sleeve can be made of PA66 injection molding. Because PA66 has the characteristics of water absorption, although it has good toughness and wear resistance, its installation and pull-off ability will be affected by the environment. Therefore, PC-ABS injection molding is preferred, which can improve the installation strength of the card foot and achieve better buckle pull-off strength. PC-ABS, preferably PC:ABS=6:4.

[0034] The beneficial effects of the utility model are as follows: two buckle feet 3 are integrally extended from the lower end of the covering part 1 and inserted into the clamping part 12 of the skeleton body 2 to achieve fixation in the up-down direction; the central positioning guide rib 6 of the shaft sleeve 10 is inserted into the central positioning groove 9 of the skeleton body 2 to tightly fit, so as to achieve fixation in the front, back, left and right directions. When the shaft sleeve 10 is to be taken out from the skeleton body 2, the disassembly hole 5 on the shaft sleeve 10 is pushed into the disassembly hole 5 with a pin to take out the shaft sleeve 10. This new structure not only enhances the buckle strength of the shaft sleeve 10 and the skeleton body 2 to prevent accidental disengagement, but also makes it convenient to disassemble the shaft sleeve 10.

[0035] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 therefore cannot be understood as a limitation on the present invention.

[0036] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A shaft sleeve for a car sun visor, characterized in that: The invention comprises a covering part (1), wherein the covering part (1) is used for crimping with a frame body (2), and two buckle feet (3) are integrally extended from the lower end of the covering part (1), and the buckle feet (3) are in the shape of a "vertical hook". The two buckle feet (3) are symmetrically distributed back to back with each other, and a reinforcing rib is provided at the rear of the vertical part, a wedge-shaped introduction part (4) is provided at the hook part, and a disassembly hole (5) is provided at the hook part; a cavity is provided inside the covering part (1), and a center positioning guide rib (6) is provided in the cavity, and the center positioning guide rib (6) is used for clamping with the frame body (2); a fixed shaft (7) is integrally extended from the middle of the covering part (1), and the interior of the fixed shaft (7) is a hollow hole (19), and two rows of staggered staples (20) are provided around the covering part (1) and the fabric.

2. The shaft sleeve of the automobile sun visor according to claim 1 is characterized in that: The reinforcing ribs are oblique reinforcing ribs (8), two in number, respectively arranged on the two side edges of the vertical portion of the buckle foot (3).

3. The shaft sleeve of the automobile sun visor according to claim 1 is characterized in that: The front end of the center positioning guide rib (6) close to the buckle foot (3) is wedge-shaped, and the center positioning guide rib (6) is zero-fit when connected to the center positioning groove (9) on the skeleton body (2).

4. The shaft sleeve of the automobile sun visor according to claim 1 is characterized in that: The length of the center positioning guide rib (6) is greater than the diameter of the fixed shaft (7).

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