Shaft cover, folding screen terminal and manufacturing method of shaft cover

Abstract

The invention provides a shaft cover, a folding screen terminal and a manufacturing method of the shaft cover, and relates to the technical field of folding screen terminals. The shaft cover is used for solving the problem that on the premise of light weight of a shaft cover, marks are easily formed on the outer surface, and overall attractiveness is affected. The shaft cover comprises a shaft cover body and a threaded column. The shaft cover body has an inner surface. The threaded column is arranged on the inner surface of the shaft cover body and used for being connected with a structural part of the folding screen terminal. The yield strength of the material of the shaft cover is larger than 300 MPa. The shaft cover provided by the invention is applied to the folding screen terminal.

Description

Technical Field

[0001] The present application relates to the technical field of folding screen terminals, and in particular to a shaft cover, a folding screen terminal, and a method for manufacturing the shaft cover. Background Art

[0002] Folding screen terminals are favored by consumers because they can achieve large screen display (when the folding screen terminal is in the unfolded state). Folding screen terminals use shaft covers to cover the internal structure, which is beneficial to the overall appearance. However, under the premise of lightweight shaft covers, the internal structure of the folding screen terminal is easy to leave marks on the shaft cover, which will affect the overall appearance and reduce the user experience. Summary of the invention

[0003] The embodiments of the present application provide a shaft cover, a folding screen terminal, and a method for manufacturing the shaft cover, which are used to solve the problem that, under the premise of lightweighting the shaft cover, the internal structure of the folding screen terminal forms an imprint on the shaft cover, affecting the overall appearance and reducing the user experience.

[0004] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0005] In a first aspect, a shaft cover is provided, the shaft cover comprising a shaft cover body and a threaded column. The shaft cover body has an inner surface. The threaded column is disposed on the inner surface of the shaft cover body, and the threaded column is used to connect with a structural member of a folding screen terminal. The material yield strength of the shaft cover is greater than 300 MPa.

[0006] The shaft cover provided in the first aspect of the present application is made of a material with a yield strength greater than 300 MPa to improve the overall hardness of the shaft cover. Therefore, when the shaft cover and the structural parts of the folding screen terminal are threadedly connected through a threaded column, it can withstand a greater force, thereby reducing the risk of marks on the outer surface of the shaft cover, thereby improving the overall appearance and helping to improve the user experience.

[0007] In a possible implementation of the first aspect of the present application, the thickness of the shaft cover body is less than 0.8 mm. Since the material strength of the shaft cover is improved, the thickness of the shaft cover can be reduced, and it can still meet the strength requirements of the overall structure. In addition, reducing the thickness of the shaft cover is conducive to reducing weight, thereby facilitating lightweighting of the device.

[0008] In a possible implementation of the first aspect of the present application, the shaft cover is made of titanium alloy material or high-strength steel material.

[0009] In a possible implementation of the first aspect of the present application, the threaded column and the shaft cover body are integrally formed. Under this structure, the reliability of the overall structure of the shaft cover is further improved.

[0010] In a possible implementation of the first aspect of the present application, the threaded column includes a first column, and an outer wall of the first column is provided with an external thread. In this structure, the second column can pass through a through hole on the structural member and be locked by a nut, thereby achieving a fixed connection between the structural member and the shaft cover.

[0011] In a possible implementation of the first aspect of the present application, the threaded column includes a second column, a threaded hole is provided on the end surface of the second column away from the inner surface, and an internal thread is provided in the threaded hole. In this structure, the stud provided on the structural member can be inserted into the threaded hole on the second column to achieve a fixed connection between the two.

[0012] In a possible implementation of the first aspect of the present application, two connecting grooves are provided on the shaft cover body, and the two connecting grooves are respectively provided at both ends of the shaft cover body along the length direction. Under this structure, shielding plates can be provided in the connecting grooves, and the two shielding plates can prevent the internal structure of the device from being exposed at both ends of the shaft cover in the length direction, which is conducive to further improving the overall appearance.

[0013] In a possible implementation of the first aspect of the present application, a limiting groove is provided on the side wall of the connecting groove. Under this structure, further limiting can be formed between the shielding plate and the shaft cover body, that is, a limiting protrusion is provided on the shielding plate and inserted into the limiting groove, thereby limiting the shielding plate from falling out of the connecting groove, which is conducive to improving the connection reliability between the shielding plate and the shaft cover.

[0014] In a possible implementation of the first aspect of the present application, the limiting groove is provided on the side wall distributed along the length direction of the shaft cover body in the connecting groove, and both the connecting groove and the limiting groove extend along the width direction of the shaft cover body. Under this structure, it is beneficial to increase the contact area between the shielding plate and the shaft cover body, that is, to increase the force bearing area between the two, thereby facilitating further improving the connection reliability between the two.

[0015] In a possible implementation of the first aspect of the present application, the shaft cover further comprises at least one positioning post, which is disposed on the inner surface of the shaft cover body. In this way, the positioning post can be pre-positioned with the structural member to avoid relative movement between the two, which is conducive to reducing assembly difficulty and improving work efficiency.

[0016] In a possible implementation manner of the first aspect of the present application, a cross section of the positioning post is circular, elliptical, or regular polygonal.

[0017] In a possible implementation of the first aspect of the present application, a boss is formed on the inner surface, and the threaded column is disposed on the boss. Under this structure, it is beneficial to increase the thickness of the threaded column, that is, it is possible to increase the thickness of the threaded column in the corresponding area on the shaft cover body, which is beneficial to further improve the strength of the area, so that the area can withstand greater extrusion pressure, thereby further reducing the risk of marks appearing on the outer surface of the shaft cover body.

[0018] In a possible implementation of the first aspect of the present application, a plurality of cavities are provided inside the shaft cover body, and the plurality of cavities are spaced apart. Under this structure, it is helpful to reduce the weight of the shaft cover body, thereby facilitating the thinning and lightening of the device. Moreover, by providing a plurality of cavities, it is helpful to improve the heat dissipation effect of the shaft cover.

[0019] In a possible implementation of the first aspect of the present application, the vertical projections of the plurality of cavities on the inner surface are staggered with the vertical projections of the threaded column on the inner surface. Under this structure, it is possible to avoid the thickness of the threaded column corresponding to the area on the shaft cover body being reduced due to the cavity, thereby facilitating the overall strength of the shaft cover.

[0020] In a possible implementation of the first aspect of the present application, at least one groove is provided on the inner surface. In this structure, the groove is provided, which is helpful to reduce the weight of the shaft cover on the one hand, and is helpful to reduce the processing difficulty on the other hand.

[0021] In a possible implementation of the first aspect of the present application, the area occupied by the groove on the inner surface is offset from the vertical projection of the threaded column on the inner surface. Under this structure, it is possible to avoid reducing the thickness of the corresponding area of ​​the threaded column on the shaft cover body, which is conducive to ensuring the overall strength of the shaft cover.

[0022] In a second aspect, a folding screen terminal is provided, comprising a folding screen, a first shell, a second shell, and a rotating mechanism, wherein the rotating mechanism comprises a hinge assembly and a shaft cover. The folding screen is supported on the first shell, the second shell, and the hinge assembly; the first shell and the second shell are respectively fixed on both sides of the hinge assembly; the shaft cover is the shaft cover as described in any of the above technical solutions, and the hinge assembly is arranged on the inner surface of the shaft cover body of the shaft cover.

[0023] The folding screen terminal provided in the second aspect of the present application, because it includes the shaft cover as described in any of the above technical solutions, can solve the same technical problem and achieve the same technical effect.

[0024] In a third aspect, a method for manufacturing an axle cap is provided, the method comprising: first, manufacturing an axle cap blank, the axle cap blank comprising an axle cap body blank and a threaded column blank; the material yield strength of the axle cap blank is greater than 300 MPa. Next, finishing the axle cap blank to form the axle cap.

[0025] The manufacturing method provided in the third aspect of the present application uses a material with a yield strength greater than 300 MPa to first manufacture a shaft cover blank, which only forms the basic outline of the shaft cover. Then, the shaft cover blank is fine-machined to form the shaft cover. In this way, some process methods with low machining accuracy but low cost can be used to manufacture the shaft cover blank, which is conducive to reducing production costs.

[0026] In a possible implementation of the third aspect of the present application, finishing the shaft cover blank includes: tapping the threaded column blank to form the threaded column.

[0027] In a possible implementation of the third aspect of the present application, finishing the shaft cover blank further includes: cutting and polishing the shaft cover blank. In this way, the shaft cover blank can be precisely processed and polished to form a shaft cover with exquisite appearance.

[0028] In a possible implementation of the third aspect of the present application, at least one of a cavity, a boss and a groove is provided on the shaft cover body blank. In this way, these weight-reducing structures can be formed during the 3D printing process, which is conducive to further improving production efficiency.

[0029] In a possible implementation of the third aspect of the present application, the method for making the shaft cover blank includes a 3D printing process. Since the material strength of the shaft cover is relatively high, the conventional CNC machine tool cutting process will result in a long processing time and high processing difficulty. Therefore, the use of a 3D printing process is conducive to reducing the processing time and reducing production costs.

[0030] In a possible implementation of the third aspect of the present application, the method for fine-machining the shaft cover blank includes a CNC machine tool cutting process. Fine-machining the shaft cover blank only by CNC machine tool technology can greatly reduce working hours and help reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A structural diagram of a foldable screen terminal provided in an embodiment of the present application;

[0032] Figure 2 A front view of a foldable screen terminal provided in an embodiment of the present application;

[0033] Figure 3 A front view of the folding screen terminal provided in an embodiment of the present application when in a folded state;

[0034] Figure 4 A front view of another folding screen terminal provided in an embodiment of the present application;

[0035] Figure 5A partial structural diagram between the shaft cover and the structural member provided for the related technology;

[0036] Figure 6 A structural diagram of a shaft cover provided in an embodiment of the present application;

[0037] Figure 7 for Figure 6 An enlarged view of the structure of area A of the shaft cover is provided;

[0038] Figure 8 for Figure 6 The partial connection structure diagram of the shaft cover and the structural parts provided;

[0039] Fig. 9 A structural diagram of a threaded column provided in an embodiment of the present application;

[0040] Fig.10 A structural diagram of another threaded column provided in an embodiment of the present application;

[0041] Fig.11 A structural diagram of another threaded column provided in an embodiment of the present application;

[0042] Fig.12 A diagram showing the connection structure between the positioning column and the structural member provided in the embodiment of the present application;

[0043] Fig.13 A structural diagram of another connecting groove provided in an embodiment of the present application;

[0044] Fig.14 A cross-sectional structural diagram of another shaft cover provided in an embodiment of the present application;

[0045] Fig.15 A cross-sectional structural diagram of another shaft cover provided in an embodiment of the present application;

[0046] Fig.16 A structural diagram of a shaft cover blank provided in an embodiment of the present application;

[0047] Fig.17 for Fig.16 An enlarged view of the structure of area B of the shaft cover blank is provided.

[0048] Figure markings: 01-folding screen terminal; 10-folding screen; 11-first part; 12-second part; 13-third part; 20-support device; 21-first shell; 22-second shell; 23-rotating mechanism; 100-axle cover; 100a-axle cover blank; 101-stud; 110-axle cover body; 110a-axle cover body blank; 111-boss; 112-cavity; 113-groove; 121-threaded column; 121a-first column; 121b-second column; 121c-threaded hole; 121d-threaded column blank; 122-positioning column; 122a-positioning hole; 122b-positioning column blank; 123-connecting groove; 124-limiting groove; 200-structural part; 210-nut; 300-shielding plate; 310-limiting protrusion; 40-auxiliary screen. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0050] In the following, the terms "first", "second", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0051] In addition, in the present application, directional terms such as "upper" and "lower" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they can change accordingly according to the changes in the orientation of the components in the drawings.

[0052] In the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0053] The present application provides a folding screen terminal, which can be a type of electronic device with a folding screen. The present application embodiment is described by taking the folding screen terminal as a mobile phone as an example. Figure 1 and Figure 2 , Figure 1 This is a structural diagram of the folding screen terminal 01 provided in an embodiment of the present application. Figure 2 This is a front view of a folding screen terminal 01 provided in an embodiment of the present application. The folding screen terminal 01 may include a folding screen 10 and a supporting device 20.

[0054] For the convenience of the following description, an XYZ coordinate system is established, and the width direction of the folding screen terminal 01 is defined as the X-axis direction, the length direction of the folding screen terminal 01 is defined as the Y-axis direction, and the thickness direction of the folding screen terminal 01 is defined as the Z-axis direction. It can be understood that the XYZ coordinate system can be flexibly transformed according to actual needs, and the embodiment of the present application only gives a possible example. And, Figure 1 Only some components of the folding screen terminal 01 are schematically shown, and the actual shape, actual size, actual position and actual structure of these components are not subject to Figure 1 restrictions.

[0055] The above-mentioned folding screen 10 is used to display images, videos, etc. The folding screen 10 may include a first part 11, a second part 12, and a third part 13, and the third part 13 is arranged between the first part 11 and the second part 12. When the folding screen 10 is folded, the third part 13 is bent, and the first part 11 and the second part 12 are arranged relatively. At least the third part 13 of the folding screen 10 is made of flexible material. The first part 11 and the second part 12 of the folding screen 10 can be made of flexible material, or can be made of rigid material, or can be made of partly flexible material and partly rigid material. This application does not make specific restrictions on this.

[0056] Among them, the above-mentioned folding screen 10 can be an organic light-emitting diode (OLED) display screen, an active matrix organic light-emitting diode or an active matrix organic light-emitting diode (AOLED) display screen, a mini light-emitting diode (ini organic light-eitting diode) display screen, an micro light-emitting diode (icro light-eitting diode) display screen, a micro organic light-emitting diode (icro organic light-eitting diode) display screen, a quantum dot light-emitting diode (QLED) display screen, a liquid crystal display (LCD), etc.

[0057] The supporting device 20 is used to support the folding screen 10. The supporting device 20 may include a first shell 21, a second shell 22 and a rotating mechanism 23, and the rotating mechanism 23 is connected between the first shell 21 and the second shell 22. The first part 11 of the folding screen 10 is supported and attached to the first shell 21. The second part 12 of the folding screen 10 is supported and attached to the second shell 22. The third part 13 of the folding screen 10 is supported and attached to the rotating mechanism 23. The first shell 21 and the second shell 22 are rotatably connected through the rotating mechanism 23, so that the folding screen terminal 01 can rotate between the unfolded state and the folded state.

[0058] Please continue reading Figure 1 and Figure 2 , Figure 1 and Figure 2 The structure diagram of the folding screen terminal 01 in the unfolded state is shown. When the folding screen terminal 01 is in the unfolded state, the first shell 21, the second shell 22 and the rotating mechanism 23 of the supporting device 20 facing the folding screen 10 are in the same plane, so that the folding screen 10 is fully opened and the flatness of the folding screen 10 can be ensured. In this state, a large screen display can be achieved, which can bring a better user experience.

[0059] See also Figure 3 , Figure 3 This is a front view of the folding screen terminal 01 provided in the embodiment of the present application in a folded state. When the folding screen terminal 01 is in a folded state, the first part 11 and the second part 12 are opposite to each other, the third part 13 is in a bent state, and the support is rotated to protect the outside of the folding screen 10. The folding screen 10 is invisible to the user to prevent the folding screen 10 from being scratched or damaged, thereby effectively protecting the folding screen 10.

[0060] In some embodiments, see Figure 4 , Figure 4 This is a front view of another folding screen terminal 01 provided in an embodiment of the present application. The folding screen terminal 01 may further include a secondary screen 40 (also referred to as an external screen), which is a flat screen and is disposed on a side of the first housing 21 away from the folding screen 10, or on a side of the second housing 22 away from the folding screen 10. When the folding screen terminal 01 is in a folded state, the secondary screen 40 may be used to display images, thereby realizing one-handed operation of the device.

[0061] The rotating mechanism 23 may include a hinge assembly (not shown) and a shaft cover 100. The hinge assembly is used to respectively Figures 1 to 4The first shell 21 and the second shell 22 are connected so that the first shell 21 and the second shell 22 can rotate relative to each other. The hinge assembly is arranged inside the shaft cover 100, that is, the shaft cover 100 forms an appearance part. When the folding screen terminal 01 is in a folded state, the shaft cover 100 is exposed to the outside to avoid the hinge assembly being exposed, which is beneficial to the overall appearance.

[0062] The shaft cover 100 and the hinge assembly need to be fixedly connected to improve the reliability of the overall structure. It should be noted that the shaft cover 100 is fixedly connected to the hinge assembly, which means that the shaft cover 100 is fixedly connected to some structural members 200 included in the hinge assembly (for example, the middle beam of the hinge assembly, and the two sides of the middle beam are rotatably connected to the first shell 21 and the second shell 22 respectively through swing arms), so that the movable parts in the hinge assembly can drive the first shell 21 and the second shell 22 to rotate relative to the shaft cover 100. Therefore, the present application does not specifically limit the specific structure of the hinge assembly. The following description is taken as an example of the structural member 200.

[0063] In order to meet the requirement of thinning the device, the thickness of the shaft cover 100 is relatively small. The shaft cover 100 can be made of aluminum alloy. Aluminum alloy has the advantages of low density, light weight, strong corrosion resistance and good mechanical properties. Therefore, the shaft cover 100 made of aluminum alloy is conducive to the overall thinning of the device.

[0064] However, since aluminum alloy is light, its yield strength is 100-300MPa and its density is 2.7g / cm 3 , and when the thickness of the shaft cover 100 is small, the overall structural strength of the shaft cover 100 is low. Therefore, when the shaft cover 100 is fixedly connected to the structural member 200, it is easy to form a mark on the outer surface of the shaft cover 100.

[0065] For example, see Figure 5 , Figure 5 A partial structural diagram between a shaft cover 100 and a structural member 200 provided for related technology. A stud 101 is provided on the shaft cover 100, and a through hole is provided on the structural member 200. The stud 101 is inserted into the through hole and is locked by a nut 210 to achieve a threaded connection. When the two are fastened to each other, the nut 210 and the stud 101 on the shaft cover 100 are subjected to force against each other. At this time, the nut 210 will cause the structural member 200 and the inner surface of the shaft cover 100 to be subjected to force, so that the area on the shaft cover 100 corresponding to the stud 101 is easily deformed in a direction away from the structural member 200, that is, a protruding mark is formed on the outer surface of the shaft cover 100, which affects the flatness of the outer surface of the shaft cover 100 and affects the overall appearance.

[0066] To solve the above problems, please refer to Figure 6 , Figure 7 as well as Figure 8 , Figure 6 This is a structural diagram of a shaft cover 100 provided in an embodiment of the present application. Figure 7 for Figure 6 The enlarged structure diagram of the A area of ​​the shaft cover 100 is provided. Figure 8 for Figure 6 A partial connection structure diagram of the shaft cover 100 and the structural member 200 is provided. The shaft cover 100 includes a shaft cover body 110 and a threaded column 121, and the shaft cover body 110 has an inner surface. The threaded column 121 is arranged on the inner surface of the shaft cover body 110, and the threaded column 121 is used to connect with the above-mentioned structural member 200. In addition, the material yield strength of the shaft cover 100 provided in the embodiment of the present application is greater than 300MPa.

[0067] For example, the shaft cover 100 provided in the embodiment of the present application can be made of titanium alloy material. Titanium alloy is an alloy composed of titanium element and other elements. The yield strength of titanium alloy material is 800-1000MPa and the density is 4.43g / cm 3 , Titanium alloy has the advantages of high strength, high thermal strength, good corrosion resistance and good low temperature performance.

[0068] Alternatively, the shaft cover 100 provided in the embodiment of the present application may also be made of high-strength steel material. The yield strength of the high-strength steel material is 550-680 MPa and the density is 7.85 g / cm 3 , which has higher material strength.

[0069] In this way, the shaft cover 100 provided in the embodiment of the present application is made of a material with a high yield strength to improve the overall strength of the shaft cover 100. When the shaft cover 100 and the structural member 200 are connected to each other and subjected to force, the risk of the structural member 200 causing a local area of ​​the shaft cover 100 to deform can be reduced, thereby helping to reduce the risk of protruding marks on the outer surface of the shaft cover 100, thereby improving the overall aesthetics, and further helping to improve the user experience.

[0070] On this basis, the thickness dimension of the above-mentioned shaft cover 100 provided in the embodiment of the present application can be less than 0.8mm. That is, the thickness dimension of the shaft cover body 110 can be less than 0.8mm. For example, the thickness of the shaft cover body 110 provided in the embodiment of the present application can be 0.7mm, 0.6mm, 0.5mm, etc. Since it is made of a material with a higher yield strength, the strength requirement of the shaft cover 100 can still be met when the thickness of the shaft cover body 110 is small, that is, the probability of deformation of the shaft cover 100 can still be reduced. In addition, since the thickness dimension of the shaft cover body is reduced, it is beneficial to reduce the overall weight of the shaft cover 100, thereby facilitating the lightweighting of the shaft cover 100.

[0071] See also Fig. 9 , Fig. 9 The structural diagram of a threaded column 121 provided in the embodiment of the present application. The threaded column 121 is used to Figure 5 The structural member 200 shown is threadedly fixedly connected. For example, the threaded column 121 may include a first column 121a, and an outer wall of the first column 121a is provided with an external thread, so that the first column 121a can be threadedly connected with the screw hole provided on the structural member 200.

[0072] Alternatively, see Fig.10 , Fig.10 A structural diagram of another threaded column 121 provided in an embodiment of the present application. The threaded column 121 may also include a second column 121b, and a threaded hole 121c is provided on the end surface of the second column 121b away from the shaft cover body 110, and an internal thread is provided in the threaded hole 121c. Correspondingly, a column structure with external threads (not shown in the figure) may be provided on the above-mentioned structural member 200, so that the second column 121b can be threadedly connected with the column structure provided on the structural member 200.

[0073] Based on this, since the shaft cover 100 provided in the embodiment of the present application is made of titanium alloy material, the overall strength of the shaft cover 100 is improved. When the structural member 200 abuts against the inner surface of the shaft cover body 110, the shaft cover body 110 can withstand a greater force, thereby reducing the risk of marks on the outer surface of the shaft cover 100, thereby improving the overall aesthetics.

[0074] To further improve the strength of the connection point between the shaft cover 100 and the structural member 200, please refer to Fig.11 , Fig.11 This is a structural diagram of another threaded column 121 provided in an embodiment of the present application. The shaft cover 100 provided in an embodiment of the present application also includes a boss 111, which is arranged on the inner surface of the shaft cover body 110, and the threaded column 121 is arranged on the boss 111. In this way, the thickness dimension of the area corresponding to the threaded connection point on the shaft cover body 110 can be increased, that is, the thickness D1 of the shaft cover body 110 plus the thickness D2 of the boss 111, so as to further increase the force that the shaft cover body 110 can withstand, so as to further reduce the risk of imprinting on the outer surface of the shaft cover 100.

[0075] In some other embodiments, see Fig.12 , Fig.12The connection structure diagram of the positioning column 122 and the structural member 200 provided in the embodiment of the present application. The above-mentioned shaft cover 100 also includes a positioning column 122, which is arranged on the inner surface of the shaft cover body 110, and the positioning column 122 is used to be plugged with the socket on the structural member 200, so as to achieve pre-positioning during the production and installation process, so as to improve the installation accuracy and help reduce the difficulty of installation.

[0076] For example, the positioning column 122 may be a cylindrical structure, that is, the cross section of the positioning column 122 is circular. Alternatively, the cross section of the positioning column 122 may also be an ellipse, a regular polygon, etc. Therefore, this application does not make any special limitation on this.

[0077] Alternatively, a positioning hole 122a may be provided on the end surface of the positioning column 122 away from the shaft cover body 110, and the columnar positioning structure on the structural member 200 may be inserted into the positioning hole 122a, which can also achieve the effect of pre-positioning. Therefore, the present application does not make any special limitation on this.

[0078] Furthermore, the positioning column 122 can be fixed to the inner surface of the shaft cover body 110 by bonding, welding, etc. Alternatively, the positioning column 122 can also be integrally formed with the shaft cover body 110. Therefore, the present application does not make any special limitation on this.

[0079] On this basis, in order to further reduce the risk of hinge component exposure and improve the overall aesthetics. Fig.12 The shaft cover body 110 is also provided with connecting grooves 123 at both ends along the length direction. The rotating mechanism 23 also includes a shielding plate 300 (also called a T-shaped block or T-shaped plate), which is inserted into the connecting groove 123. By arranging the shielding plates 300 at both ends along the length direction of the shaft cover body 110, the hinge assembly can be shielded at both ends of the device, thereby further preventing the internal structure of the device from being exposed, so as to further improve the overall aesthetics.

[0080] To further improve the connection reliability between the shielding plate 300 and the shaft cover body 110. Fig.13 , Fig.13 A structural diagram of another connecting groove 123 provided in an embodiment of the present application. A limiting groove 124 may also be provided on the side wall of the connecting groove 123. Accordingly, a limiting protrusion 310 may be provided on the shielding plate 300, so that the limiting protrusion 310 is inserted into the limiting groove 124 to form a limit between the shielding plate 300 and the shaft cover body 110 along the thickness direction of the shaft cover 100, so as to prevent the shielding plate 300 from moving in the direction of escaping from the connecting groove 123. This is conducive to improving the reliability of the overall structure.

[0081] In some embodiments, please refer to Fig.12 and Fig.13 , the above-mentioned limiting groove 124 can be provided on the side wall distributed along the length direction (i.e., the Y-axis direction) of the shaft cover body 110 in the connecting groove 123, and the connecting groove 123 and the limiting groove 124 both extend along the width direction (i.e., the X-axis direction) of the shaft cover body 110. In this way, the space in the connecting groove 123 and the limiting groove 124 can be increased. Accordingly, the portion of the shielding plate 300 inserted into the connecting groove 123 and the limiting protrusion 310 can be increased in volume accordingly, that is, the contact area between the shielding plate 300 and the plate body of the shaft cover 100 is increased, which is conducive to improving the connection and limiting strength between the shielding plate 300 and the shaft cover body 110.

[0082] In addition, when the shielding plate 300 is inserted into the connection groove 123 on the shaft cover body 110, the shielding plate 300 and the shaft cover body 110 can also be fixedly connected. For example, the two can be further fixed by gluing, threading, etc., which is conducive to further improving the connection reliability between the shielding plate 300 and the shaft cover body 110. Therefore, the specific fixing method between the shielding plate 300 and the shaft cover body 110 is not particularly limited in this application.

[0083] On this basis, by using a material with a higher hardness to make the shaft cover 100, the weight of the entire device can be further reduced. Fig.14 , Fig.14 A cross-sectional structural diagram of another shaft cover 100 provided in an embodiment of the present application, and Fig.14 The cross-sectional view is perpendicular to the Y-axis direction of the shaft cover 100. The shaft cover body 110 provided in the embodiment of the present application may have a cavity 112 formed therein. In addition, a plurality of cavities 112 are formed therein, and the plurality of cavities 112 are distributed at intervals inside the shaft cover body 110.

[0084] Exemplarily, each cavity 112 may extend along the length direction of the shaft cover body 110 , multiple cavities 112 may be spaced apart in multiple groups along the length direction of the shaft cover body 110 , each group of cavities 112 includes multiple cavities, and the multiple cavities 112 in each group of cavities 112 may be spaced apart in the width direction of the shaft cover body 110 .

[0085] Furthermore, the cross-sections of the plurality of cavities 112 may be of the same shape, for example Fig.14All are shown as circles. They can also be set to different shapes, for example, the cross section of some cavities 112 is circular, and the cross section of another part of the cavities 112 is a regular polygon, etc. The sizes of the cross-sectional areas of the multiple cavities 112 can be set to the same size, or they can be set to different sizes, that is, the cross-sectional area of ​​some cavities 112 is larger, and the cross-sectional area of ​​another part of the cavities 112 is smaller, etc. The lengths of the multiple cavities 112 can be set to the same length, or they can be set to different lengths. Therefore, the present application does not specifically limit the specific structure of the cavity 112.

[0086] For example, the cavity 112 provided in the area of ​​the shaft cover body 110 that needs to withstand a smaller force can be set to a structure with a larger cross-sectional area and a longer length. The cavity 112 provided in the area that needs to withstand a larger force (for example, the connection point between the shaft cover 100 and the structural member 200) can be set to a structure with a smaller cross-sectional area and a shorter length. This is beneficial for reducing the weight of the shaft cover 100 while ensuring the overall strength of the shaft cover 100.

[0087] To further ensure the inherent strength of the shaft cover 100. The vertical projection of the above-mentioned cavity 112 provided in the embodiment of the present application on the inner surface of the shaft cover body 110 is misaligned with the vertical projection of the above-mentioned threaded column 121 on the inner surface of the shaft cover body 110. That is, the projection of the cavity 112 on the inner surface and the vertical projection of the threaded column 121 on the inner surface do not overlap with each other. In this way, in the area where the threaded column 121 is provided on the shaft cover body 110, since the cavity 112 is not provided, the overall strength of the area corresponding to the threaded column 121 will not be reduced, which is more conducive to improving the overall strength of the shaft cover 100.

[0088] It should be noted that, since the inner surface of the shaft cover body 110 is not necessarily a plane, the plane where the threaded column 121 is located is taken as the projection plane, that is, in the XY plane, the cavity 112 and the threaded column 121 are offset from each other.

[0089] In some other possible embodiments, see Fig.15 , Fig.15 A cross-sectional structural diagram of another shaft cover 100 provided in an embodiment of the present application. The shaft cover 100 can also be reduced in weight by providing at least one groove 113 on the inner surface of the shaft cover body 110. That is, multiple grooves 113 are provided in different areas on the inner surface of the shaft cover body 110 to reduce the weight of the shaft cover 100. In this way, on the one hand, the weight reduction of the shaft cover 100 can be reduced. On the other hand, it is conducive to reducing the process difficulty during processing, thereby reducing the processing cost.

[0090] Furthermore, a plurality of grooves 113 may be opened in an area where no threaded column 121 is provided, and the threaded column 121 is provided outside the groove 113, that is, the area occupied by the groove 113 is offset from the vertical projection of the threaded column 121 on the inner surface, thereby reducing the overall weight of the shaft cover 100 without affecting the threaded column 121.

[0091] In addition, the cross-sectional shape of each groove body 113 along the inner surface parallel to the shaft cover body 110 (the cross-sectional shape parallel to the XY plane) can be the same, for example, all are set to a circular structure. It can also be different, for example, part is circular and part is polygonal. Moreover, each groove body 113 can be a regular shape (for example, a circle or a regular polygon) or an irregular shape (for example, a polygon connected end to end and with unequal side lengths). Therefore, the present application does not specifically limit the specific structure of the groove body 113.

[0092] Based on this, by opening a plurality of cavities 112 inside the shaft cover body 110 or opening a groove 113 on the inner surface of the shaft cover body 110, it is helpful to reduce the overall weight of the shaft cover 100, thereby facilitating the thinness of the device. At the same time, in a plane parallel to the inner surface of the shaft cover body 110, the cavity 112 and the groove 113 are both staggered with the above-mentioned 120, which can reduce the weight of the shaft cover 100 while ensuring the strength at 120, so as to reduce the risk of imprinting on the outer surface of the shaft cover 100.

[0093] In some embodiments, the threaded column 121, the positioning column 122 and the connecting groove 123 form a connecting structure. The connecting structure includes but is not limited to the above-mentioned structures, and the connecting structure can also be other forms of structures and used to connect with the above-mentioned structural member 200 or other components. Therefore, this application does not make special restrictions on this.

[0094] The above description of the structure of the shaft cover 100 provided in the embodiment of the present application is as follows. The manufacturing method of the shaft cover 100 is described below.

[0095] First, a shaft cover blank 100a is produced. Fig.16 , Fig.16 This is a structural diagram of the shaft cover blank 100a provided in an embodiment of the present application. Fig.17 for Fig.16 An enlarged view of the structure of region B of the shaft cover blank 100a is provided.

[0096] For example, the shaft cover blank 100a can be made by 3D printing. 3D printing is a rapid prototyping technology, also known as additive manufacturing. It is a technology that uses a digital model as the basis and uses powdered metal or plastic and other bondable materials to construct objects by printing layer by layer. That is, different printing materials such as metal, ceramic, and plastic are stacked layer by layer through a 3D printer, and finally the model on the computer is turned into a physical object.

[0097] In the embodiment of the present application, the titanium alloy powder can be added to a 3D printer, and the titanium alloy can be stacked layer by layer through 3D printing to form the shaft cover blank 100a. Due to the high hardness of titanium alloy metal, when it is processed by traditional CNC machine tool cutting technology, it will cause problems such as long processing time, low efficiency, and high material consumption (for example, tool head), resulting in increased processing costs. The use of 3D printing technology can improve processing efficiency on the one hand, and help reduce costs on the other.

[0098] In some embodiments, please refer to Fig.16 and Fig.17 The shaft cover blank 100a may include a shaft cover body blank 110a and a threaded column blank 121d, which are formed into an integral structure through a 3D printing process, thereby facilitating improving the overall structural strength.

[0099] In addition, the shaft cover body blank 110a may also include a positioning column blank 122b. It is understandable that the blank 120a formed by the 3D printing process is a basic structure and does not meet the precise design requirements. For example, the threaded column blank 121d and the positioning column blank 122b are only protruding structures formed on the shaft cover body blank 110a and have not been processed with high precision. However, the formation of the protruding structure by the 3D printing process is conducive to reducing the production difficulty and production cost compared to the conventional cutting process.

[0100] Furthermore, in processing the above Fig.13 As shown in the limit groove 124, since the limit groove 124 is opened on the inner wall of the connecting groove 123, and the size of the connecting groove 123 is relatively small, when a CNC machine tool is used for processing, a general cutter head cannot extend into the connecting groove 123. If a smaller cutter head is used, the strength of the cutter head cannot be guaranteed, resulting in increased processing difficulty.

[0101] Based on this, a 3D printing process is adopted. Since the process is to stack layers one by one, the limiting groove 124 can be formed in the process of manufacturing the shaft cover blank 100a without any processing difficulties.

[0102] In addition, during the 3D printing process, the above-mentioned Fig.14The cavity 112 shown, Fig.11 The boss 111 and Fig.15 As shown, the groove body 113. In this way, during the process of manufacturing the shaft cover blank 100a by the 3D printing process, structures such as the cavity 112, the boss 111 and the groove body 113 can be formed, which is conducive to further improving the production efficiency.

[0103] Next, the blank is finished to form the shaft cover 100 .

[0104] For example, the shaft cover blank 100a can be finely processed by a cutting process of a CNC machine tool. Since the basic structure of the shaft cover 100 (i.e., the shaft cover blank 100a) has been formed by the above-mentioned 3D printing technology, the time required for fine processing by a CNC machine tool is greatly shortened, thereby saving costs.

[0105] The above-mentioned finishing process may include cutting, polishing and tapping the shaft cover blank 100a.

[0106] For example, the threaded column blank 121 d is subjected to a tapping process to process threads (internal threads or external threads, etc.) to form the threaded column 121 .

[0107] In addition, the shaft cover body blank 110a is further cut to form a shaft cover body 110 that meets the design size requirements (such as the thickness of the shaft cover body 110). In addition, the positioning column blank 122b can be further cut to form a positioning column 122 that meets the size requirements (such as the diameter and height of the positioning column 122).

[0108] In order to further improve the aesthetics of the shaft cover body 110, the surface of the shaft cover body 110 can also be polished by a CNC machine tool, thereby improving the overall aesthetics of the shaft cover 100 to form a Figure 6 and Figure 7 The shaft cover 100 is shown.

[0109] Finally, the shaft cover 100 can be further installed, that is, the shaft cover 100 can be installed and matched with the structural member 200 in the hinge assembly. Since the shaft cover 100 is made of a titanium alloy material with high hardness, when the shaft cover 100 and the structural member 200 are tightly matched, the risk of deformation of the shaft cover 100 caused by the structural member 200 can be reduced, thereby reducing the risk of marks on the outer surface of the shaft cover 100, thereby improving the overall aesthetics.

[0110] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0111] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A shaft cover, characterized in that: include: A shaft cover body having an inner surface; A threaded column, disposed on the inner surface of the shaft cover body, the threaded column being used to connect with a structural member of the folding screen terminal; Wherein, the material yield strength of the shaft cover is greater than 300 MPa.

2. The shaft cover according to claim 1, characterized in that: The thickness of the shaft cover body is less than 0.8 mm.

3. The shaft cover according to claim 1 or 2, characterized in that: The shaft cover is made of titanium alloy material or high-strength steel material.

4. The shaft cover according to any one of claims 1 to 3, characterized in that: The threaded column and the shaft cover body are integrally formed.

5. The shaft cover according to any one of claims 1 to 4, characterized in that: The threaded column comprises a first column body, and an outer wall of the first column body is provided with an external thread.

6. The shaft cover according to any one of claims 1 to 4, characterized in that: The threaded column comprises a second column body, a threaded hole is formed on the end surface of the second column body away from the inner surface, and an internal thread is formed in the threaded hole.

7. The shaft cover according to any one of claims 1 to 6, characterized in that: The shaft cover body is provided with two connection grooves, and the two connection grooves are respectively provided at two ends of the shaft cover body along the length direction.

8. The shaft cover according to claim 7, characterized in that: A limiting groove is provided on the side wall of the connecting groove.

9. The shaft cover according to claim 8, characterized in that: The limiting groove is arranged on a side wall distributed in the connecting groove along the length direction of the shaft cover body, and both the connecting groove and the limiting groove extend along the width direction of the shaft cover body.

10. The shaft cover according to any one of claims 1 to 9, characterized in that: The shaft cover further comprises at least one positioning column, and the positioning column is arranged on the inner surface of the shaft cover body.

11. The shaft cover according to claim 10, characterized in that: The cross section of the positioning column is circular, elliptical or regular polygonal.

12. The shaft cover according to any one of claims 1 to 11, characterized in that: A boss is formed on the inner surface, and the threaded column is disposed on the boss.

13. The shaft cover according to any one of claims 1 to 12, characterized in that: A plurality of cavities are arranged inside the shaft cover body, and the plurality of cavities are distributed at intervals.

14. The shaft cover according to claim 13, characterized in that: The vertical projections of the plurality of cavities on the inner surface and the vertical projections of the threaded column on the inner surface are arranged in a staggered manner.

15. The shaft cover according to any one of claims 1 to 14, characterized in that: At least one groove is formed on the inner surface.

16. The shaft cover according to claim 15, characterized in that: The area occupied by the groove body on the inner surface is staggered with the vertical projection of the threaded column on the inner surface.

17. A folding screen terminal, characterized in that: It includes a folding screen, a first shell, a second shell and a rotating mechanism, wherein the rotating mechanism includes a hinge assembly and a shaft cover; the folding screen is supported on the first shell, the second shell and the hinge assembly; the first shell and the second shell are respectively fixed on both sides of the hinge assembly; the shaft cover is the shaft cover according to any one of claims 1 to 16, and the hinge assembly is arranged on the inner surface of the shaft cover body of the shaft cover.

18. A method for manufacturing a shaft cover, characterized in that: include: Making a shaft cover blank; the shaft cover blank comprises a shaft cover body blank and a threaded column blank; the material yield strength of the shaft cover blank is greater than 300MPa; The shaft cover blank is finely processed to form a shaft cover.

19. The manufacturing method according to claim 18, characterized in that: The finishing of the shaft cover blank includes: tapping the threaded column blank.

20. The manufacturing method according to claim 19, characterized in that: The finishing of the shaft cover blank further includes: cutting and polishing the shaft cover blank.

21. The production method according to any one of claims 18 to 20, characterized in that: The shaft cover body blank is provided with at least one of a cavity, a boss and a groove.

22. The method according to any one of claims 18 to 21, characterized in that: The method for making the shaft cover blank includes a 3D printing process.

23. The production method according to any one of claims 18 to 22, characterized in that: The method for finishing the shaft cover blank includes a CNC machine tool cutting process.

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