Rotating shaft structure and electronic product

Abstract

The utility model relates to the technical field of rotating shafts, in particular to a rotating shaft structure and an electronic product, and the rotating shaft structure is characterized by comprising a rotating shaft body, a concave wheel and an elastic sheet assembly, the rotating shaft body comprises a conical part, and the outer diameter of the conical part is gradually reduced in the first direction; the concave wheel sleeves the outer side of the conical part through the through hole, the inner surface of the through hole comprises an inclined surface, and the inclined direction of the inclined surface is the same as that of the conical part; the elastic piece assembly is located at the first end of the concave wheel and used for pushing the concave wheel to move in the second direction, so that the inner surface of the penetrating hole interferes with the outer surface of the conical part to generate friction. Wherein the first direction and the second direction are opposite in direction and are both parallel to the axis of the rotating shaft body. According to the utility model, the friction area can be effectively increased by the friction between the conical part and the inclined surface, and the outer diameter of the rotating shaft can be reduced under the condition that the torsion is not changed, so that the rotating shaft can be suitable for most light and thin electronic products and can replace cell-type rotating shafts to reduce the investment cost.

Description

Technical Field

[0001] The utility model relates to the technical field of rotating shafts, in particular to a rotating shaft structure and an electronic product. Background Art

[0002] With the development trend of notebook computers becoming thinner and lighter, the outer diameter of the notebook computer shaft is required to be reduced accordingly. At present, common shaft structures include two types: spring-type shaft and cell-type shaft.

[0003] The shrapnel-type shaft has a high cost-effectiveness and good reliability. However, the outer diameter of its molded product is large. If the outer diameter is forcibly compressed, the friction area will be reduced, the friction surface stress will increase, and the wear will be aggravated, which cannot meet the life test. The cell-type shaft is less affected by the outer diameter and can meet the needs of miniaturization. However, the main cell structure is injection molded and has high requirements for product precision. The production process needs to distinguish between products with upper and lower tolerance limits, and the process control requirements are high. Magnets are often required to achieve the closing action. In summary, the cost of cell-type shafts is relatively high. Utility Model Content

[0004] In order to solve at least the above technical problems existing in the prior art, the utility model provides a rotating shaft structure and an electronic product.

[0005] On the one hand, the utility model provides a rotating shaft structure, including a rotating shaft body, a concave wheel and a spring assembly; the rotating shaft body includes a tapered portion, and the outer diameter of the tapered portion gradually decreases along a first direction; the concave wheel is sleeved on the outer side of the tapered portion through a perforation, and the inner surface of the perforation includes an inclined surface, and the inclination direction of the inclined surface is the same as the inclination direction of the tapered portion; the spring assembly is located at the first end of the concave wheel, and the spring assembly is used to push the concave wheel to move along a second direction, so that the inner surface of the perforation interferes with the outer surface of the tapered portion to generate friction; wherein the first direction and the second direction are opposite and are both parallel to the axis of the rotating shaft body.

[0006] In some embodiments, the shaft body also includes a first shaft portion and a second shaft portion, the conical portion is located between the first shaft portion and the second shaft portion, the diameter of the first shaft portion is larger than the diameter of the second shaft portion, and the diameter of the conical portion gradually decreases from the diameter of the first shaft portion to the diameter of the second shaft portion; the side where the second shaft portion is located is the first end of the cam, and the spring assembly is sleeved on the second shaft portion.

[0007] In some embodiments, the inner surface of the through hole and / or the outer surface of the tapered portion is provided with friction protrusions.

[0008] In some embodiments, it also includes a first connecting plate, the surface of the first connecting plate includes a vertical plate, the vertical plate is provided with a sleeve hole, the sleeve hole is sleeved on the first rotating shaft part, the first rotating shaft part is rotatably connected to the vertical plate; the vertical plate is provided with a guide assembly arranged along the axial direction of the rotating shaft body, and the concave wheel is slidably connected to the guide assembly.

[0009] In some embodiments, a mounting hole is provided on the vertical plate, and the guide assembly includes a guide shaft and a connecting shaft located at one end of the guide shaft, and the connecting shaft is fixedly connected to the mounting hole; a guide plate is provided on the outer wall of the cam, and a guide hole is provided on the guide plate, and the guide hole is sleeved on the guide shaft and used to slide on the guide shaft.

[0010] In some embodiments, a limit stop ring is further provided on the first rotating shaft portion, and the vertical plate is located between the limit stop ring and the concave wheel; a flexible spring sheet is provided between the vertical plate and the concave wheel, and the flexible spring sheet is sleeved on the first rotating shaft portion.

[0011] In some embodiments, the flexible spring sheet is a silicone spring sheet, and the hardness of the silicone spring sheet ranges from HS60 to HS80.

[0012] In some embodiments, the spring sheet assembly includes a cam, a plurality of spring sheets and a nut; the plurality of spring sheets are sequentially stacked and located between the cam and the nut, the cam is clamped with the first end of the concave wheel, the nut is threaded with the second rotating shaft portion, and is used to squeeze the spring sheets.

[0013] In some embodiments, the outer diameters of the cam and the spring assembly are no greater than 4 mm.

[0014] Another aspect of the utility model further provides an electronic product, comprising the above-mentioned rotating shaft structure.

[0015] The utility model provides a shaft structure and electronic product. When in use, the spring assembly applies a thrust in the first direction (axial direction) to the concave wheel, so that the inner surface of the concave wheel perforation interferes with the outer surface of the tapered portion to generate friction. At this time, the axial pressure can be converted into a partial radial pressure through the cooperation between the concave wheel and the tapered portion. When the shaft moves, the partial radial pressure provides friction, thereby compensating for the friction area lost due to the reduction of the outer diameter of the shaft, thereby ensuring the performance of the shaft mechanism. In the technical solution of the utility model, the friction between the tapered portion and the inclined surface can effectively increase the friction area. Therefore, under the condition of unchanged torque, the outer diameter of the shaft can be reduced, thereby making the shaft suitable for most thin and light electronic products, thereby replacing some cell-type shafts to reduce the investment cost of the shaft in electronic products. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] By reading the detailed description below with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, wherein:

[0017] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0018] Figure 1 A structural schematic diagram of a rotating shaft structure provided in an embodiment of the utility model;

[0019] Figure 2 A cross-sectional view of a rotating shaft structure provided by an embodiment of the utility model;

[0020] Figure 3 A schematic diagram of the structure of the rotating shaft body in the rotating shaft structure provided in an embodiment of the utility model;

[0021] Figure 4 A cross-sectional view of a concave wheel in a rotating shaft structure provided by an embodiment of the utility model;

[0022] Figure 5 for Figure 2 A partial enlarged view of the concave wheel;

[0023] Figure 6 This is a schematic structural diagram of the first connecting plate in the rotating shaft structure provided in an embodiment of the utility model.

[0024] In the figure:

[0025] 10: rotating shaft body; 20: concave wheel; 30: spring assembly; 40: first connecting plate; 50: second connecting plate;

[0026] 11: conical portion; 12: first rotating shaft portion; 13: second rotating shaft portion; 14: limit stop ring; 15: flexible spring sheet;

[0027] 21: perforation; 22: inclined surface; 23: guide plate; 24: guide hole;

[0028] 31: cam; 32: spring; 33: nut;

[0029] 41: vertical plate; 42: sleeve hole; 43: mounting hole; 44: guide shaft; 45: connecting shaft. DETAILED DESCRIPTION

[0030] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0031] After analysis, if the radius of the rotating shaft structure is reduced, the friction area needs to be increased accordingly. That is, in ultra-thin electronic products, since the radius of the rotating shaft mechanism is limited (the size becomes smaller), it is necessary to increase the friction area by changing the structure of the rotating shaft.

[0032] An embodiment of the utility model provides a rotating shaft structure, including a rotating shaft body, a concave wheel and a spring assembly; a conical portion is arranged on the rotating shaft body, and an inclined surface is arranged inside the through hole of the concave wheel. Under the action of the spring assembly, a friction force is generated between the inclined surface and the conical portion, thereby compensating for the friction area lost due to the reduction of the outer diameter of the rotating shaft, thereby ensuring the performance of the rotating shaft.

[0033] The following is a detailed description of the various components of the rotating shaft mechanism provided by the embodiment of the utility model, as well as the positional relationship and connection relationship of the various components, in conjunction with the accompanying drawings.

[0034] like Figures 1 to 6 As shown, in the embodiment of the utility model, the shaft body 10 includes a tapered portion 11, and the outer diameter of the tapered portion 11 gradually decreases along the first direction; wherein, the shaft body 10 includes a first shaft portion 12 and a second shaft portion 13, the tapered portion 11 is located between the first shaft portion 12 and the second shaft portion 13, the diameter of the first shaft portion 12 is greater than the diameter of the second shaft portion 13, and the diameter of the tapered portion 11 gradually decreases from the diameter of the first shaft portion 12 to the diameter of the second shaft portion 13.

[0035] As shown in the figure, a main shaft structure extending in the axial direction is further provided on the side of the first shaft portion 12 away from the conical portion 11 and the second shaft portion 13. The radius of the main shaft structure can be slightly larger than the radius of the first shaft portion 12, but the requirement of miniaturization of the shaft structure as a whole is met. The second connecting plate 50 is connected to the main shaft structure, and the second connecting plate 50 is used to connect to a structure of the electronic product, such as the system end or the display end.

[0036] In the embodiment of the utility model, the cam 20 is sleeved on the outside of the tapered portion 11 through the through hole 21, and the inner surface of the through hole 21 includes an inclined surface 22, and the inclination direction of the inclined surface 22 is the same as the inclination direction of the tapered portion 11; the spring assembly 30 is located at the first end of the cam 20, and the spring assembly 30 is used to push the cam 20 to move along the second direction, so that the inner surface of the through hole 21 interferes with the outer surface of the tapered portion 11 to generate friction; wherein, the tapered portion 11 and the inclined surface 22 have a certain length along the axial direction of the rotating shaft body 10 or the cam 20, so that the two generate sufficient interference surfaces, and the area of ​​the interference surface determines the area of ​​the friction force.

[0037] For example, when the friction area is determined, friction protrusions may be provided on the inner surface of the through hole 21 and / or the outer surface of the tapered portion 11. The friction protrusions may ensure the friction force and further guarantee the friction area.

[0038] The first direction and the second direction are opposite and parallel to the axis of the shaft body 10 . The side where the second shaft portion 13 is located is the first end of the cam 20 , and the spring assembly 30 is sleeved on the second shaft portion 13 .

[0039] For example, the connection position between the second shaft portion 13 and the elastic sheet assembly 30 is a non-circular circumferential structure, and the elastic sheet assembly 30 is sleeved on the second shaft portion 13 . The two will not generate relative rotation, and are limited to axial force.

[0040] Continue to refer Figures 1 to 6 As shown, in the embodiment of the utility model, the rotating shaft structure further includes a first connecting plate 40, and the first connecting plate 40 is used to connect a part of the structure of the electronic product, such as a display terminal or a system terminal. The surface of the first connecting plate 40 includes a vertical plate 41, and a sleeve hole 42 is provided on the vertical plate 41. The sleeve hole 42 is sleeved on the first rotating shaft part 12, and the first rotating shaft part 12 is rotatably connected to the vertical plate 41; the vertical plate 41 is provided with a guide component arranged along the axial direction of the rotating shaft body 10, and the concave wheel 20 is slidably connected to the guide component.

[0041] The first connecting plate 40 is a necessary structure of the rotating shaft structure, through which it is connected to the structure that needs to rotate. Taking a laptop as an example, the laptop includes a display end and a system end, and the first connecting plate 40 can be connected to the display end or the system end, wherein the first connecting plate 40 can be set as a non-rotating structure, for example, the first connecting plate 40 is connected to the system end, and when the laptop is used, the system end is placed on the operating platform, and its position will not change with the rotation of the rotating shaft structure. On the basis of this structure, by setting the vertical plate 41, a guide component for the cam 20 can be added to limit the moving direction of the cam 20 so that it can only move within the axial range of the rotating shaft body 10.

[0042] For example, a mounting hole 43 is provided on the vertical plate 41, and the guide assembly includes a guide shaft 44 and a connecting shaft 45 located at one end of the guide shaft 44, and the connecting shaft 45 is fixedly connected to the mounting hole 43; a guide plate 23 is provided on the outer wall of the cam 20, and a guide hole 24 is provided on the guide plate 23, and the guide hole 24 is sleeved on the guide shaft 44 and is used to slide on the guide shaft 44.

[0043] When the cam 20 slides axially, the guide hole 24 on the guide plate 23 slides on the guide shaft 44 along the axial direction of the guide shaft 44. Due to the cooperation between the guide hole 24 and the guide shaft 44, the cam 20 will not produce circumferential rotation, thereby achieving the purpose of guiding and limiting.

[0044] Continue to refer Figures 1 to 6 As shown, in the embodiment of the utility model, a limit stop ring 14 is further provided on the first rotating shaft portion 12, and the vertical plate 41 is located between the limit stop ring 14 and the concave wheel 20; a flexible spring sheet 15 is provided between the vertical plate 41 and the concave wheel 20, and the flexible spring sheet 15 is sleeved on the first rotating shaft portion 12.

[0045] The flexible spring sheet 15 has a certain deformation ability. There are manufacturing tolerances when the cam 20 is assembled. The flexible spring sheet 15 can absorb the tolerance to ensure that the pressure on the conical surface and the inclined surface 22 will not decay too much. In addition, after long-term use of the shaft, the friction surface wears and causes the cam 20 to advance. The flexible spring sheet 15 deforms to meet the advancement of the cam 20 and avoid the formation of a gap between the conical surface and the inclined surface 22, that is, to slow down the attenuation of the shaft structure. In addition, by setting the flexible spring sheet 15, radial shaking of the structure connected to the shaft structure can be prevented / slowed down.

[0046] For example, the flexible spring sheet 15 is a silicone spring sheet, and the hardness of the silicone spring sheet ranges from HS60 to HS80.

[0047] Continue to refer Figures 1 to 6 As shown, in the embodiment of the utility model, the spring assembly 30 includes a cam 31, a plurality of springs 32 and a nut 33; the plurality of springs 32 are sequentially stacked and located between the cam 31 and the nut 33, the cam 31 is clamped with the first end of the concave wheel 20, the nut 33 is threaded with the second shaft portion 13, and is used to squeeze the spring 32.

[0048] The number of spring pieces 32 in the spring piece assembly 30 can be determined according to actual needs. The spring piece assembly 30 applies an axial force to the cam 31, and the cam 31 squeezes the groove to make the cam wheel 20 move axially, thereby causing the inclined surface 22 to rub against the conical surface, and finally generating a force in the diametrical direction, which acts as a rotating shaft.

[0049] The embodiment of the utility model also provides an electronic product, including the above-mentioned hinge structure. Taking the electronic product as a laptop computer as an example, the laptop computer includes a display terminal and a system terminal, wherein the display terminal and the system terminal are both developed towards the direction of ultra-thinness, and when the laptop computer is closed, the thickness of the display terminal and the system terminal stacked together is the thickness of the entire laptop computer, wherein the diameter of the hinge structure part should be equal to or less than the thickness.

[0050] By using the shaft structure provided in this embodiment, the outer diameter of the shaft structure as a whole can be reduced while ensuring the shaft performance. For example, the outer diameters of the cam 20 and the spring assembly 30 are no greater than 4 mm. Compared with the original outer diameter of 5.5 mm, the outer diameter of the shaft structure is reduced by at least 1.5 mm.

[0051] The utility model provides a shaft structure and electronic product. When in use, the spring assembly 30 applies a thrust in the first direction (axial direction) to the cam 20, so that the inner surface of the perforation 21 of the cam 20 interferes with the outer surface of the tapered portion 11 to generate friction. At this time, the axial pressure can be converted into a partial radial pressure through the cooperation between the cam 20 and the tapered portion 11. When the shaft moves, the partial radial pressure provides friction to achieve the effect of maintaining the position of the shaft. In the technical solution of the utility model, the friction between the tapered portion 11 and the inclined surface 22 can effectively increase the friction area. Therefore, under the condition of unchanged torque, the outer diameter of the shaft can be reduced, so that the shaft can be suitable for most thin and light electronic products, so that it can replace the shaft of some cells to reduce the investment cost of the shaft in electronic products.

[0052] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0053] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0054] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A rotating shaft structure, characterized in that: It comprises a rotating shaft body (10), a concave wheel (20) and a spring assembly (30); The rotating shaft body (10) comprises a tapered portion (11), and the outer diameter of the tapered portion (11) gradually decreases along a first direction; The concave wheel (20) is sleeved on the outside of the conical portion (11) through a through hole (21); the inner surface of the through hole (21) comprises an inclined surface (22); the inclination direction of the inclined surface (22) is the same as the inclination direction of the conical portion (11); The spring assembly (30) is located at the first end of the concave wheel (20), and the spring assembly (30) is used to push the concave wheel (20) to move along the second direction, so that the inner surface of the through hole (21) interferes with the outer surface of the conical portion (11) to generate friction; The first direction and the second direction are in opposite directions and are both parallel to the axis of the rotating shaft body (10).

2. The rotating shaft structure according to claim 1, characterized in that: The shaft body (10) further comprises a first shaft portion (12) and a second shaft portion (13); the tapered portion (11) is located between the first shaft portion (12) and the second shaft portion (13); the diameter of the first shaft portion (12) is greater than the diameter of the second shaft portion (13); and the diameter of the tapered portion (11) gradually decreases from the diameter of the first shaft portion (12) to the diameter of the second shaft portion (13); The side where the second rotating shaft portion (13) is located is the first end of the concave wheel (20), and the elastic sheet assembly (30) is sleeved on the second rotating shaft portion (13).

3. The rotating shaft structure according to claim 2, characterized in that: The inner surface of the through hole (21) and / or the outer surface of the tapered portion (11) are provided with friction protrusions.

4. The rotating shaft structure according to claim 2, characterized in that: It also includes a first connecting plate (40), the surface of the first connecting plate (40) includes a vertical plate (41), the vertical plate (41) is provided with a sleeve hole (42), the sleeve hole (42) is sleeved on the first rotating shaft portion (12), and the first rotating shaft portion (12) is rotatably connected to the vertical plate (41); The vertical plate (41) is provided with a guide assembly arranged along the axial direction of the rotating shaft body (10), and the concave wheel (20) is slidably connected to the guide assembly.

5. The rotating shaft structure according to claim 4, characterized in that: The vertical plate (41) is provided with a mounting hole (43), the guide assembly comprises a guide shaft (44) and a connecting shaft (45) located at one end of the guide shaft (44), and the connecting shaft (45) is fixedly connected to the mounting hole (43); A guide plate (23) is provided on the outer wall of the cam wheel (20), and a guide hole (24) is provided on the guide plate (23). The guide hole (24) is sleeved on the guide shaft (44) and is used to slide on the guide shaft (44).

6. The rotating shaft structure according to claim 5, characterized in that: The first rotating shaft portion (12) is also provided with a limit stop ring (14), and the vertical plate (41) is located between the limit stop ring (14) and the concave wheel (20); A flexible spring sheet (15) is provided between the vertical plate (41) and the concave wheel (20), and the flexible spring sheet (15) is sleeved on the first rotating shaft portion (12).

7. The rotating shaft structure according to claim 6, characterized in that: The flexible spring sheet (15) is a silicone spring sheet, and the hardness of the silicone spring sheet ranges from HS60 to HS80.

8. The rotating shaft structure according to claim 2, characterized in that: The spring sheet assembly (30) comprises a cam (31), a plurality of spring sheets (32) and a nut (33); A plurality of the spring sheets (32) are sequentially stacked and located between the cam (31) and the nut (33); the cam (31) is clamped with the first end of the concave wheel (20); the nut (33) is threadedly connected with the second rotating shaft portion (13) and is used to squeeze the spring sheets (32).

9. The rotating shaft structure according to any one of claims 1 to 8, characterized in that: The outer diameters of the cam (20) and the spring assembly (30) are no greater than 4 millimeters.

10. An electronic product, characterized in that: The invention comprises a rotating shaft structure as claimed in any one of claims 1 to 9.

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