Rotating shaft structure

Abstract

The utility model discloses a rotating shaft structure which comprises a shell and a rotating shaft assembly arranged in the shell. The rotating shaft assembly comprises a first rotating shaft and a second rotating shaft, and a synchronizing mechanism is arranged between the first rotating shaft and the second rotating shaft. The synchronizing mechanism is arranged between the first rotating shaft and the second rotating shaft, so that the first rotating shaft and the second rotating shaft are kept synchronous during relative rotation, and double-side synchronous rotation and movement stability are achieved. The structure can effectively solve the problem of desynchrony possibly occurring in a traditional rotating shaft structure, and the stability and reliability of a mechanical system in the operation process are ensured.

Description

Technical Field

[0001] The utility model relates to the field of mechanical transmission, in particular to a rotating shaft structure. Background Art

[0002] The hinge assembly is a key component for achieving rotational motion. Traditional hinge assemblies typically employ a single-sided rotational design, achieving rotational motion by applying torque. This design is widely used in various applications, including furniture door hinges and rotating parts in tools.

[0003] Current single-sided hinge assemblies have limitations in certain applications. Specifically, they are inadequate for applications requiring simultaneous, synchronous rotation of both ends. Certain devices, such as folding guitars, complex mechanical devices, or specialized cabinet doors, require simultaneous, synchronous rotation of both ends of the hinge to achieve more uniform and stable motion. In these cases, traditional single-sided hinge designs cannot meet these requirements, easily leading to asynchronous movement at both ends, which in turn affects the overall functionality and lifespan of the device. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a rotating shaft structure that can achieve bilateral synchronous rotation.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A rotating shaft structure, comprising:

[0007] a housing, and a rotating shaft assembly disposed inside the housing;

[0008] The rotating shaft assembly includes a first rotating shaft and a second rotating shaft. A synchronization mechanism is provided between the first rotating shaft and the second rotating shaft so that the first rotating shaft and the second rotating shaft maintain synchronization when they rotate relative to each other.

[0009] Furthermore, the synchronization mechanism includes an even number of mutually meshing synchronization gears, and the first rotating shaft and the second rotating shaft are respectively provided with driving gears meshing with the synchronization gears.

[0010] Furthermore, the diameter of the driving gear is larger than the diameter of the synchronous gear.

[0011] Furthermore, the first rotating shaft and the second rotating shaft have the same structure, and both include: a first gasket and a second gasket mounted on the first rotating shaft or the second rotating shaft, the first gasket having two through holes, the first rotating shaft and the second rotating shaft passing through the two through holes respectively, one side of the first gasket abutting against the side of the driving gear, and the side of the second gasket away from the first gasket is provided with a fastening nut cooperating with the first rotating shaft or the second rotating shaft; a spring is also provided between the first gasket and the second gasket.

[0012] Furthermore, a limiting plate is provided between the first gasket and the spring plate, the limiting plate abuts against the first gasket, and a first limiting portion is provided on the limiting plate, and a second limiting portion is provided on the first gasket, and the limiting is performed by the cooperation of the first limiting portion and the second limiting portion.

[0013] Furthermore, the first limiting portion is a limiting ridge, and the second limiting portion is a limiting groove. The limiting ridge can completely fill the limiting groove.

[0014] Furthermore, there are a plurality of limiting grooves and at least one limiting ridge, and the number of the limiting ridges does not exceed the number of the limiting grooves.

[0015] Furthermore, a boss is provided on the first rotating shaft or the second rotating shaft at the end of the fastening nut away from the second gasket, and a connecting piece is fixed on the boss. The first rotating shaft and the second rotating shaft can be driven to rotate synchronously in opposite directions by rotating the connecting piece towards each other.

[0016] Furthermore, the shaft assembly is provided on both sides of the housing, or

[0017] The rotating shaft assembly is arranged on one side of the shell, and an auxiliary rotating shaft assembly is arranged on the other side of the shell.

[0018] Furthermore, the auxiliary rotating shaft assembly has a third rotating shaft and a fourth rotating shaft, and both the third rotating shaft and the fourth rotating shaft are provided with a through hole along the axial direction.

[0019] The beneficial effects of the utility model are:

[0020] This utility model provides a rotating shaft structure. By disposing a rotating shaft assembly comprising a first rotating shaft and a second rotating shaft within a housing and providing a synchronization mechanism between the two rotating shafts, the first and second rotating shafts maintain synchronization during relative rotation, thereby achieving bilateral synchronous rotation and smooth motion. This structure effectively resolves the asynchrony issue that may occur in traditional rotating shaft structures, ensuring the stability and reliability of the mechanical system during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 It is a top view schematic diagram of the utility model;

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0024] Figure 3 It is a schematic diagram of the explosion structure of the utility model;

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the shell of the present utility model.

[0026] in,

[0027] 100, housing;

[0028] 200, shaft assembly;

[0029] 210, first rotating shaft; 220, second rotating shaft; 230, driving gear; 240, boss;

[0030] 201, first gasket; 202, spring; 203, limiting plate; 2031, first limiting portion; 204, second gasket; 2041, second limiting portion; 205, fastening nut;

[0031] 300, synchronization mechanism; 310, synchronization gear;

[0032] 400, connecting piece;

[0033] 500, auxiliary rotating shaft assembly; 510, third rotating shaft; 520, fourth rotating shaft. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technical personnel in this field without creative work are within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the creation of the present invention can be combined interactively without conflicting with each other.

[0035] In a traditional shaft structure, there is no mechanical connection between the shafts of the shaft assembly. When in use, problems such as error accumulation, unstable movement, and reduced accuracy may occur between the traditional shaft assemblies.

[0036] Reference Figure 1 A rotating shaft structure of the present invention includes a housing 100 and a rotating shaft assembly 200 arranged inside the housing 100 .

[0037] Among them, reference Figure 2-3 The shaft assembly 200 includes a first shaft 210 and a second shaft 220. A synchronization mechanism 300 is disposed between the first shaft 210 and the second shaft 220 to ensure synchronization during relative rotation. The synchronization mechanism 300 ensures high synchronization and smoother relative rotation between the first and second shafts 210, 220, reducing mechanical vibration and shock, improving system stability, operational efficiency, and precision.

[0038] In some embodiments, reference Figure 2-3 The synchronization mechanism 300 includes an even number of mutually meshing synchronization gears 310. The first rotating shaft 210 and the second rotating shaft 220 are respectively provided with a drive gear 230 that meshes with the synchronization gear 310. Specifically, when the first rotating shaft 210 drives the drive gear 230 on it to rotate, the drive gear 230 meshes with the two synchronization gears 310 located on both sides of it to transmit torque. The synchronization gear 310 then transmits the torque to the drive gear 230 on the second rotating shaft 220 that is meshed with it, so that the second rotating shaft 220 rotates in synchronization with the first rotating shaft 210. Through the mechanical engagement between the driven gears, the first rotating shaft 210 and the second rotating shaft 220 are ensured to maintain precise synchronization during rotation, thereby achieving a high-precision mechanical synchronization effect.

[0039] Furthermore, the diameter of the driving gear 230 is larger than the diameter of the synchronous gear 310. It is understood that the larger diameter of the driving gear 230 can increase the transmission ratio of the driving gear 230 to increase the output torque, thereby increasing the torque output.

[0040] In some embodiments, reference Figure 3The first rotating shaft 210 and the second rotating shaft 220 have the same structure, and both further include: a first gasket 201 and a second gasket 204 sleeved on the first rotating shaft 210 or the second rotating shaft 220. The first gasket 201 has two through-holes, through which the first rotating shaft 210 and the second rotating shaft 220 pass, respectively. One side of the first gasket 201 abuts against the side of the driving gear 230. The second gasket 204 is provided with a fastening nut 205 that cooperates with the first rotating shaft 210 or the second rotating shaft 220 on a side away from the first gasket 201. A spring 202 is also provided between the first gasket 201 and the second gasket 204. Specifically, the first gasket 201 has an elongated structure, with through-holes for the first rotating shaft 210 and the second rotating shaft 220 to pass through, respectively, at both ends of the first gasket 201. By providing a spring 202 between the first washer 201 and the second washer 204, the slight vibrations and impacts generated during the rotation of the shaft can be absorbed and mitigated, further improving the stability and durability of the system. The first rotating shaft 210 and the second rotating shaft 220 are both bolts, each having an external thread at the end thereof that mates with the internal thread of the fastening nut 205. When the fastening nut 205 is tightened, the fastening nut 205 presses the first washer 201, the spring 202, and the second washer 204 toward the drive gear 230, thereby tightening the entire rotating shaft structure. It should be noted that the spring 202 here is at least one, or at least a pair. The number of springs 202 is selected based on specific needs.

[0041] Furthermore, a limiting piece 203 is provided between the first gasket 201 and the spring 202. The limiting piece 203 abuts against the first gasket 201, and a first limiting portion 2031 is provided on the limiting piece 203. The first gasket 201 is provided with a second limiting portion 2041. Positioning is performed by the cooperation of the first limiting portion 2031 and the second limiting portion 2041. It is understood that when the rotating shaft is rotated, the first limiting portion 2031 and the second limiting portion 2041 can cooperate to ensure that the first rotating shaft 210 and the second rotating shaft 220 enter a fixed state after rotating to a specific angle when the rotating shaft rotates towards each other. The first rotating shaft 210 and the second rotating shaft 220 will stop rotating and maintain the state between the first rotating shaft 210 and the second rotating shaft 220.

[0042] Further, refer to Figure 3, the first limiting portion 2031 is a limiting rib, and the second limiting portion 2041 is a limiting groove, and the limiting rib can completely fill the limiting groove. It can be understood that when the rib of the first limiting portion 2031 enters the limiting groove, the two sides of the rib abut against the inner wall surface of the groove, thereby achieving the limiting effect. In addition, the provided spring 202 can continuously provide pressure to the limiting piece 203, so that the rib can remain in the limiting groove after entering the limiting groove. When rotation is urgently needed, the limiting piece 203 overcomes the pressure of the spring 202, and the limiting rib slides out of the groove, so that the first rotating shaft 210 and the second rotating shaft 220 can continue to rotate towards each other.

[0043] Furthermore, there are multiple limiting grooves and at least one limiting ridge, and the number of limiting grooves does not exceed the number of limiting grooves. It is understood that when the limiting ridge slides out of one limiting groove and enters the next limiting groove, the relative rotation angle between the first rotating shaft 210 and the second rotating shaft 220 is changed and maintained at that angle. Continuing to rotate the first rotating shaft 210 or the second rotating shaft 220 further changes the relative position, thereby achieving multiple gear adjustments to meet the needs of different usage scenarios.

[0044] Specifically, there are four limiting grooves and two limiting ridges. When in use, the two limiting ridges on the limiting piece 203 can cooperate with two of the limiting grooves at the same time, thereby further improving the limiting effect.

[0045] Furthermore, the retaining grooves have curved edges, and the retaining ridges have complementary curved edges, which allow for smoother rotation and reduce frictional resistance and wear. When the retaining ridges slide out of one retaining groove and into the next, the curved structure makes the entire process smoother and more natural, ensuring a smooth transition between the rotating shafts.

[0046] Specifically, the arc-shaped edge design of the limiting groove enables the limiting rib to move smoothly along the arc-shaped surface during the sliding process, avoiding the jamming phenomenon that may be caused by the sharp-edged structure. The edge of the limiting rib also adopts an arc-shaped design, which fits perfectly with the arc-shaped edge of the limiting groove, further reducing the friction during rotation. Furthermore, it can effectively disperse mechanical stress, reduce local stress concentration, and extend the service life of the limiting groove and the limiting rib. During the rotation process, after the limiting rib slides out of a groove, it will naturally enter the next groove along the arc-shaped edge. The whole process is smooth and there is no obvious sense of frustration, ensuring the continuity and accuracy of the adjustment angle.

[0047] In some embodiments, reference Figure 2 、 3A boss 240 is provided on the first rotating shaft 210 or the second rotating shaft 220, located at the end of the fastening nut 205 away from the second washer 204. A connecting piece 400 is fixed to the boss 240. Rotating the connecting piece 400 toward each other drives the first rotating shaft 210 and the second rotating shaft 220 to rotate synchronously toward each other. In a specific embodiment, for example, the rotating shaft structure of this case is used to install a cabinet door, wherein the connecting piece 400 is used to connect the cabinet body and the cabinet door to enable the cabinet door to be opened and closed.

[0048] Furthermore, the connecting piece 400 can be made of metal or high-strength composite materials to ensure sufficient strength and durability during frequent use. One end of the connecting piece 400 is fixed to the boss 240 by screws, welding, or clamping, and the other end is provided with a mounting hole or mounting slot for connecting to the cabinet body or cabinet door, facilitating installation and removal.

[0049] In some embodiments, continue to refer to Figure 1-3 The rotating shaft assembly 200 is provided on both sides of the housing 100, or the rotating shaft assembly 200 is provided on one side of the housing 100, and the auxiliary rotating shaft assembly 500 is provided on the other side of the housing 100. It is understood that the rotating shaft structure of the present invention can be used alone or in combination. When combined, two rotating shaft assemblies 200 including the synchronization mechanism 300 can be selected, or one rotating shaft assembly 200 can include the synchronization mechanism 300 while the other does not.

[0050] Furthermore, the auxiliary shaft assembly 500 includes a third shaft 510 and a fourth shaft 520, each of which is provided with an axial through-hole. When one of the shaft assemblies 200 does not include the synchronization mechanism 300, that shaft assembly 200 serves as the auxiliary shaft assembly 500. Specifically, there is no mechanical connection between the third shaft 510 and the fourth shaft 520 of the auxiliary shaft assembly 500. Both shafts 510 and 520 are provided with axial through-holes, allowing wires to be inserted through these through-holes for electrical connection or signal transmission.

[0051] Specifically, the diameter and length of the through-holes of the third rotating shaft 510 and the fourth rotating shaft 520 can be designed based on the specifications of the wires to be inserted, ensuring that the wires can pass through smoothly without being damaged. The inner walls of the through-holes can be smoothed to reduce friction and resistance that may be encountered during the wire insertion process.

[0052] In practical applications, the auxiliary shaft assembly 500 can be used in rotating devices that require power or signal transmission. For example, in a cabinet door with a power function, power cables can be inserted through the through-holes of the third and fourth shafts 510 and 520 to provide power to the door's motorized device. Furthermore, signal cables can be inserted through these through-holes to monitor and provide feedback on the door's status.

[0053] Alternatively, in a foldable guitar, the third and fourth shafts 510 and 520 of the auxiliary shaft assembly 500 can be used to connect the foldable parts of the guitar. Specifically, the through holes along the axial direction of the third and fourth shafts 510 and 520 can be used for wiring. The electrical wiring or signal lines of the guitar can be passed through these through holes, thereby connecting the electronic components of the guitar.

[0054] The through hole through the auxiliary hinge assembly 500 ensures reliable electrical connection and signal transmission when the guitar is folded or unfolded. Wires can pass through the through hole smoothly without being damaged or affecting the guitar's functionality during folding and unfolding operations.

[0055] The above is a specific description of the preferred implementation of the present invention, but the invention of the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A rotating shaft structure, characterized in that: include: a housing, and a rotating shaft assembly disposed inside the housing; The rotating shaft assembly includes a first rotating shaft and a second rotating shaft, and a synchronization mechanism is provided between the first rotating shaft and the second rotating shaft so that the first rotating shaft and the second rotating shaft maintain synchronization when rotating relative to each other; The synchronization mechanism includes an even number of mutually meshing synchronization gears, and the first rotating shaft and the second rotating shaft are respectively provided with a driving gear meshing with the synchronization gears; The diameter of the driving gear is larger than the diameter of the synchronous gear; The rotating shaft assembly is provided on one side of the housing, and an auxiliary rotating shaft assembly is provided on the other side of the housing; The auxiliary rotating shaft assembly comprises a third rotating shaft and a fourth rotating shaft, and both the third rotating shaft and the fourth rotating shaft are provided with a through hole along the axial direction.

2. The rotating shaft structure according to claim 1, characterized in that: The first rotating shaft and the second rotating shaft have the same structure, and both further include: a first gasket and a second gasket sleeved on the first rotating shaft or the second rotating shaft, the first gasket has two through holes, the first rotating shaft and the second rotating shaft pass through the two through holes respectively, one side of the first gasket abuts against the side of the driving gear, and the second gasket is provided with a fastening nut that cooperates with the first rotating shaft or the second rotating shaft on the side away from the first gasket; a spring is also provided between the first gasket and the second gasket.

3. The rotating shaft structure according to claim 2, characterized in that: A limiting plate is further provided between the first gasket and the spring plate, the limiting plate abuts against the first gasket, and a first limiting portion is provided on the limiting plate, and a second limiting portion is provided on the first gasket, and the first limiting portion and the second limiting portion cooperate to perform limiting.

4. The rotating shaft structure according to claim 3, characterized in that: The first limiting portion is a limiting ridge, and the second limiting portion is a limiting groove. The limiting ridge can completely fill the limiting groove.

5. The rotating shaft structure according to claim 4, characterized in that: There are a plurality of limiting grooves and at least one limiting ridge, and the number of the limiting ridges does not exceed the number of the limiting grooves.

6. The rotating shaft structure according to claim 2, characterized in that: A boss is provided on the first rotating shaft or the second rotating shaft at the end of the fastening nut away from the second gasket, and a connecting piece is fixed on the boss. The first rotating shaft and the second rotating shaft can be driven to rotate synchronously in opposite directions by rotating the connecting piece towards each other.

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