360-degree asynchronous rotating shaft

Abstract

The utility model relates to a 360-degree asynchronous rotating shaft which comprises an upper shaft core and a lower shaft core which are arranged in parallel, flat squares are arranged on the upper shaft core and the lower shaft core, and two auxiliary plates are arranged between the upper shaft core and the lower shaft core. Two apple gaskets are arranged between the two auxiliary plates, one apple gasket is installed on the upper shaft core, and the other apple gasket is installed on the lower shaft core. At least two pulleys which abut against each other are arranged between the two apple gaskets; by arranging the pulleys, when the upper shaft core rotates, the lower shaft core does not rotate along with the upper shaft core, and similarly, when the lower shaft core rotates, the upper shaft core does not rotate synchronously, so that asynchronous rotation of the upper shaft core and the lower shaft core is achieved. And meanwhile, after the center distance between the upper shaft core and the lower shaft core is increased, the asynchronous rotation effect can be achieved by arranging a plurality of sliding blocks. And the width is not changed while the length is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of rotating shafts, in particular to a 360-degree asynchronous rotating shaft. Background Art

[0002] The system end and the display end of a laptop are connected by a rotating shaft. Chinese Patent with the publication number CN118242357A discloses a 360-degree rotating double-gear rotating shaft mechanism and a dual-screen reinforced laptop, which relates to the field of gear rotation transmission. The rotating shaft mechanism adopts a double-rotating shaft design. Through the cooperation of gears and a groove rotating disc, and the synchronous transmission of connecting pieces, the dual screens connected to the rotating shaft mechanism can achieve synchronous rotation from 0 to 360 degrees to any position. The present invention optimizes the gear structure and the transmission mode therein, reduces the structural space occupied by the gears, and while ensuring its transmission consistency and torque magnitude, can effectively optimize the overall size of the rotating shaft structure. On this basis, a dual-screen reinforced laptop is provided. When the laptop adopts the rotating shaft mechanism, the rotation angle is more flexible and reliable, which is beneficial to the miniaturization improvement design of the multi-screen laptop. Since the transmission is carried out through two gears, when one of the rotating shafts in the rotating shaft mechanism rotates, the other rotating shaft needs to rotate, and asynchronous rotation of the two rotating shafts cannot be achieved. When the center distance between the two rotating shafts increases, the diameters of the two gears also need to increase simultaneously to achieve synchronous rotation of the two rotating shafts, resulting in an increase in its width. The most obvious manifestation is the mounting plate. When the center distance between the two rotating shafts increases, the length of the mounting plate will increase. At the same time, after the diameters of the two gears increase, the length and width of the mounting plate will increase, leading to an increase in the volume of the rotating shaft. Content of the Utility Model

[0003] The purpose of the utility model is to provide a 360-degree asynchronous rotating shaft to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: a 360-degree asynchronous rotating shaft, including two upper shaft cores and two lower shaft cores arranged in parallel. Flat squares are provided on both the upper shaft cores and the lower shaft cores. Two auxiliary plates are arranged between the upper shaft cores and the lower shaft cores; two apple gaskets are arranged between the two auxiliary plates. One of the apple gaskets is installed on the upper shaft core, and the other apple gasket is installed on the lower shaft core; at least two pulleys that are in contact with each other are arranged between the two apple gaskets; the two pulleys are respectively in contact with the two apple gaskets.

[0005] Compared with the prior art, by using pulleys instead of gears in the prior art, the production cost of pulleys is lower than that of gears; at the same time, the transmission of two pulleys can play a role in buffering and protecting the transmission device through slipping, preventing equipment damage; multiple pulleys are arranged between two apple gaskets for transmission; when the length of the auxiliary plate increases, its width remains unchanged, thereby reducing the thickness and volume of the entire rotating shaft.

[0006] In a preferred technical solution of the present utility model, shaft shoulders are provided on both the upper shaft core and the lower shaft core. A connecting plate is provided on one side of the shaft shoulder. An upper bracket is fixedly installed on the connecting plate of the upper shaft core by rivets, and a lower bracket is fixedly installed on the connecting plate of the lower shaft core by rivets.

[0007] In a preferred technical solution of the present utility model, a limiting plate and a cam sheet are further provided on both the upper shaft core and the lower shaft core. Two auxiliary plates are located between the limiting plate and the cam sheet, and the limiting plate abuts against the shaft shoulder; limiting gaskets and friction gaskets are provided on both the upper shaft core and the lower shaft core; the gaskets and the friction gaskets are located between the limiting plate and the adjacent auxiliary plate; the friction gasket is located between the limiting gasket and the auxiliary plate.

[0008] In a preferred technical solution of the present utility model, upper limiting bumps are provided on the outer circumference of the limiting gasket installed on the upper shaft core, and lower limiting bumps are provided on the outer circumference of the limiting gasket installed on the lower shaft core. Upper limiting platforms and lower limiting platforms are provided on the limiting plate, and the upper limiting platform is adapted to the upper limiting bump; the lower limiting platform is adapted to the lower limiting bump.

[0009] In a preferred technical solution of the present utility model, sliding grooves are provided on both of the two auxiliary plates, and both ends of the two pulleys are respectively located in the sliding grooves.

[0010] In a preferred technical solution of the present utility model, a lower receiving groove adapted to the pulley is provided on the outer circumference of the apple gasket installed on the lower shaft core; an upper receiving groove adapted to the pulley is provided on the outer circumference of the apple gasket installed on the upper shaft core.

[0011] In a preferred technical solution of the present utility model, a friction gasket is provided between the cam sheet and the adjacent auxiliary plate.

[0012] In a preferred technical solution of the present utility model, cams are installed on both the upper shaft core and the lower shaft core. Convex points are provided on the cams, and grooves corresponding to the convex points are provided on the cam sheet.

[0013] In a preferred technical solution of the present utility model, elastic sheets are installed on both the upper shaft core and the lower shaft core and are threadedly connected with nuts; a lock washer is provided between the elastic sheet and the nut. One end of the elastic sheet abuts against the cam, and the other end abuts against the lock washer.

[0014] In a preferred technical solution of the present utility model, a stud is threadedly connected to the middle of the cam sheet.

[0015] In addition to the technical problems solved by the present invention, the technical features constituting the technical solution, and the advantages brought by the technical features of these technical solutions described above, other technical problems that the present utility model can solve, other technical features included in the technical solution, and the advantages brought by these technical features will be further described in detail with reference to the accompanying drawings. Description of the Drawings

[0016] Figure 1 is a three-dimensional assembly schematic diagram of the present utility model.

[0017] Figure 2 is a three-dimensional exploded schematic diagram of the present utility model.

[0018] Figure 3 is a schematic diagram of the rotation process of the present utility model. Detailed Description of the Preferred Embodiments

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0020] Please refer to Figures 1-3 , the 360-degree asynchronous rotating shaft of the present utility model is used to connect the display and the host of the notebook computer, enabling the display to rotate around the host. It includes two parallel upper shaft cores 15 and lower shaft cores 16. Both the upper shaft core 15 and the lower shaft core 16 are provided with shaft shoulders 18. One side of the shaft shoulder 18 is provided with a connecting plate. The connecting plate of the upper shaft core 15 is fixedly installed with an upper bracket 13 through a rivet 17, and the connecting plate of the lower shaft core 16 is fixedly installed with a lower bracket 14 through a rivet 17. The upper bracket and the lower bracket 14 are respectively connected to the display and the host of the notebook computer.

[0021] Please refer to Figure 2 , a limit plate 12 and a cam plate 6 are sequentially arranged between the upper shaft core 15 and the lower shaft core 16. Two auxiliary plates 8 are arranged between the limit plate 12 and the cam plate 6. The limit plate 12 abuts against the shaft shoulder 18. Circular holes are provided at both ends of the limit plate 12, the cam plate 6, and the two auxiliary plates 8. The two circular holes are respectively adapted to the upper shaft core 15 and the lower shaft core 16, enabling the upper shaft core 15 and the lower shaft core 16 to rotate in the corresponding circular holes. Flat sides are provided on both the upper shaft core 15 and the lower shaft core 16.

[0022] Limit shims 11 and friction shims 7 are provided on both the upper shaft core 15 and the lower shaft core 16. The shim 11 and the friction shim 7 are located between the limit plate 12 and the auxiliary plate 8 adjacent to the limit plate 12; the friction shim 7 is located between the limit shim 11 and the auxiliary plate 8. When the upper shaft core 15 rotates, the limit shim 11 and the friction shim 7 on the upper shaft core 15 rotate synchronously. Upper limit bumps 19 are provided on the outer circumferences of the limit shims 11 mounted on the upper shaft core 15, and lower limit bumps 20 are provided on the outer circumferences of the limit shims 11 mounted on the lower shaft core 16. At the same time, upper limit platforms 21 and lower limit platforms 22 are provided on the limit plate 12, and the upper limit platform 21 is adapted to the upper limit bump 19. The lower limit platform 22 is adapted to the lower limit bump 20.

[0023] Under normal conditions, when the upper bracket 13 connected to the upper shaft core 15 and the lower bracket 14 connected to the lower shaft core 16 are in the same direction and in a horizontal state; through the cooperation of the upper limit platform 21 and the upper limit bump 19, it is prevented that the upper bracket 13 mounted on the upper shaft core 15 and the lower bracket 14 mounted on the lower shaft core 16 are completely attached. When the upper shaft core 15 rotates 180 degrees, due to the cooperation of the upper limit platform 21 and the upper limit bump 19, the upper shaft core 15 cannot continue to rotate. At this time, the lower shaft core 16 rotates; when the lower shaft core 16 rotates 180 degrees, through the cooperation of the lower limit platform 22 and the lower limit bump 20, the lower shaft core 16 cannot continue to rotate.

[0024] After the rotating shaft is installed on the notebook computer, when the display and the host are in the closed state, through the cooperation of the upper limit platform 21 and the upper limit bump 19, the display cannot continue to move towards the host direction, thereby preventing the display from being squeezed and damaged by the keyboard on the host. Similarly, when the display is opened and rotated 360 degrees, through the cooperation of the lower limit platform 22 and the lower limit bump 20, it is prevented that the outer shell of the display is squeezed by the outer shell of the host.

[0025] Two apple shims 9 are provided between the two auxiliary plates 8. Mounting holes adapted to the flat square are provided at the centers of each apple shim 9. One apple shim 9 is mounted on the upper shaft core 15, and the other apple shim 9 is mounted on the lower shaft core 16.

[0026] At least two pulleys 10 are provided between the two apple shims 9. The diameter of the pulley 10 is less than or equal to the diameter of the apple shim 9. The two pulleys 10 are respectively in contact with the two apple shims 9. And the two pulleys 10 are in contact with each other. Both ends of the two pulleys 10 are rotatably connected to the two auxiliary plates 8.

[0027] In use, due to the setting of the pulleys, when the upper axle core rotates, the lower axle core will not rotate following the upper axle core. Similarly, when the lower axle core rotates, the upper axle core will not rotate synchronously, thus achieving asynchronous rotation of the upper axle core and the lower axle core. In the prior art, through the gear transmission method, when one rotates, the other must rotate synchronously.

[0028] It should be noted that the sum of the diameters of the two pulleys 10 is equal to the distance between the outer surfaces of the two apple gaskets 9. In the actual production process, when the center distance between the two apple gaskets 9 (the center distance between the upper axle core 15 and the lower axle core 16) increases for the rotating shafts used in different models of notebook computers. Three, four or more pulleys 10 can be arranged between the two apple gaskets 9. That is to say, the length of the auxiliary plate 8 increases while the width of the auxiliary plate 8 remains unchanged. Thus, the thickness and volume of the entire rotating shaft are reduced.

[0029] Sliding grooves are provided on the two auxiliary plates 8. The two ends of the above two pulleys 10 are respectively located in the sliding grooves. A lower receiving groove 24 adapted to the pulley 10 is provided on the outer circumference of the apple gasket 9 installed on the lower axle core 16. An upper receiving groove 23 adapted to the pulley 10 is provided on the outer circumference of the apple gasket 9 installed on the upper axle core 15.

[0030] In the normal state, when the upper bracket 13 connected to the upper axle core 15 and the lower bracket 14 connected to the lower axle core 16 are in the same direction and in a horizontal state; the pulley 10 adjacent to the lower axle core 16 is clamped in the lower receiving groove 24. The pulley 10 adjacent to the upper axle core 15 abuts against the outer edge of the apple gasket 9 installed on the upper axle core 15 (as Figure 3 shown in a).

[0031] The lower axle core 16 is fixed, and the upper axle core 15 is rotated by an external force. When the upper axle core 15 rotates 180 degrees, the upper receiving groove 23 and the lower receiving groove 24 are opposite, and the sliding 10 located between the two apple gaskets 9 can move in the sliding groove (as Figure 3 shown in b).

[0032] Then the upper axle core 15 is fixed, and the lower axle core 16 is rotated by an external force. When the axle core 16 rotates, the two pulleys 10 have a certain moving space in the sliding groove. So that the lower axle core 16 can rotate smoothly. When the lower axle core 16 rotates and after rotating 180 degrees; the pulley 10 adjacent to the lower axle core 16 abuts against the outer edge of the apple gasket 9 installed on the lower axle core 16 (as Figure 3 shown in c).

[0033] A friction gasket 7 is provided between the cam plate 6 and the auxiliary plate adjacent to the cam plate 6. Cams 5 are installed on both the upper shaft core 15 and the lower shaft core 16. The cams 5 are provided with bumps, and the cam plate 6 is provided with grooves corresponding to the bumps. The clamping force is provided through the cooperation of the bumps and the grooves. Elastic pieces 3 are installed on both the upper shaft core 15 and the lower shaft core 16, and nuts 2 are threadedly connected. A lock washer 2 is provided between the elastic piece 3 and the nut 2. One end of the elastic piece 3 abuts against the cam 5, and the other end abuts against the lock washer 2.

[0034] A stud 4 is threadedly connected to the middle of the cam plate 6, and the stud 4 is used to install a housing (not shown).

[0035] It should be noted that, for the sake of clear description, the "friction gasket plates" installed at different positions in this application are identified with the same reference numeral "7".

[0036] If there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, then the directional indications are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If the specific posture changes, then the directional indications will also change accordingly.

[0037] The above embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A 360-degree asynchronous rotating shaft, comprising two upper shaft cores and two lower shaft cores arranged in parallel, and flat squares are provided on both the upper shaft cores and the lower shaft cores, characterized in that, There are two auxiliary plates arranged between the upper shaft core and the lower shaft core; there are two apple gaskets arranged between the two auxiliary plates, one apple gasket is installed on the upper shaft core, and the other apple gasket is installed on the lower shaft core; there are at least two pulleys abutted against each other between the two apple gaskets; the two pulleys are respectively abutted against the two apple gaskets.

2. The 360-degree asynchronous rotating shaft according to claim 1, wherein: Shaft shoulders are arranged on both the upper shaft core and the lower shaft core. A connecting plate is arranged on one side of the shaft shoulder. An upper bracket is fixedly installed on the connecting plate of the upper shaft core by rivets, and a lower bracket is fixedly installed on the connecting plate of the lower shaft core by rivets.

3. The 360-degree asynchronous rotating shaft according to claim 2, characterized in that: A limiting plate and a cam plate are also arranged on the upper shaft core and the lower shaft core. The two auxiliary plates are located between the limiting plate and the cam plate, and the limiting plate abuts against the shaft shoulder; limiting gaskets and friction gaskets are arranged on both the upper shaft core and the lower shaft core; the gaskets and the friction gaskets are located between the limiting plate and the auxiliary plate adjacent to the limiting plate; the friction gasket is located between the limiting gasket and the auxiliary plate.

4. The 360-degree asynchronous rotating shaft according to claim 3, wherein: Upper limiting bumps are arranged on the outer circumference of the limiting gasket installed on the upper shaft core, and lower limiting bumps are arranged on the outer circumference of the limiting gasket installed on the lower shaft core. Upper limiting platforms and lower limiting platforms are arranged on the limiting plate. The upper limiting platform is adapted to the upper limiting bump; the lower limiting platform is adapted to the lower limiting bump.

5. The 360-degree asynchronous rotating shaft according to claim 1, wherein: Sliding grooves are arranged on both of the two auxiliary plates, and both ends of the two pulleys are respectively located in the sliding grooves.

6. The 360-degree asynchronous rotating shaft according to claim 5, wherein: A lower receiving groove adapted to the pulley is arranged on the outer circumference of the apple gasket installed on the lower shaft core; an upper receiving groove adapted to the pulley is arranged on the outer circumference of the apple gasket installed on the upper shaft core.

7. The 360-degree asynchronous rotating shaft according to claim 1, wherein: A friction gasket is arranged between the cam plate and the auxiliary plate adjacent to the cam plate.

8. The 360-degree asynchronous rotating shaft according to claim 1, characterized in that: Cams are installed on both the upper shaft core and the lower shaft core. Convex points are arranged on the cams, and grooves corresponding to the convex points are arranged on the cam plates.

9. The 360-degree asynchronous rotating shaft according to claim 8, characterized in that: Elastic sheets are installed on both the upper shaft core and the lower shaft core, and nuts are threadedly connected; a lock washer is arranged between the elastic sheet and the nut. One end of the elastic sheet abuts against the cam, and the other end abuts against the lock washer.

10. The 360-degree asynchronous rotating shaft according to claim 1, characterized in that: A stud is threadedly connected to the middle of the cam plate.

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