Rotating shaft applied to folding electronic organ
By designing the tic-tac shaft core and connecting plate in the rotating assembly, combining the limit notch and the clamp to ensure the rotation sequence, and enhancing the screw rigidity through pre-pressure torque, the problem of the existing rotating shaft not rotating smoothly in sequence is solved, and the existing rotating shaft cannot rotate smoothly in sequence is improved. User operation fluency and equipment stability.
Patent Information
- Application Number
- CN202420987051.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-08
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-05-08
AI Technical Summary
The existing shafts cannot rotate in a certain order in some products, and there is a problem of not being stable enough when rotating, especially in devices with folding and opening functions, which affects the smoothness of user operation and the stability of the equipment.
A rotating assembly including a first and second shaft core, a connecting plate, a rotating bracket, a rotating wheel and a nut is designed to ensure the rotation sequence through the design of the limit notch and the block, and the setting of the pre-pressure torque is combined with the setting of the pre-pressure torque. To enhance the rigidity and stability of the screw.
The stability and accuracy of the rotating components are achieved, ensuring that the user can operate in a fixed order, reducing vibration and impact forces, and extending the service life of the equipment.
Smart Images
Figure CN222185444U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of rotating shafts, in particular to a rotating shaft used for a folding electronic piano. Background Art
[0002] Hinges are widely used in many fields and devices. For example, products with folding and opening functions, such as laptops and foldable phones, all require hinges to achieve the folding and opening functions, making it easier for users to carry and use the above products.
[0003] However, the existing rotating shafts have the following shortcomings: 1. In some products, in order to improve the smoothness and convenience of user operation, the two parts connected by the rotating shaft need to be rotated in a certain order, and the existing rotating shafts generally do not have this function; 2. Both parts are hinged to the rotating shaft, and there is a certain gap in the length direction of the rotating shaft, which causes the problem of not being stable enough when the parts are rotated.
[0004] Therefore, we propose a rotating shaft for use in a foldable electronic piano, which can rotate smoothly and in a certain sequence. Utility Model Content
[0005] The main purpose of the utility model is to provide a rotating shaft used for a foldable electronic piano, aiming to solve the technical problem that the existing rotating shaft cannot rotate smoothly and in a certain sequence.
[0006] To achieve the above-mentioned purpose, the utility model provides a rotating shaft for a foldable electronic piano, comprising a first rotating assembly, wherein the first rotating assembly comprises a first shaft core, a second shaft core, a first connecting plate and a second connecting plate arranged in a tic-tac-toe shape, wherein the first shaft core and the second shaft core are parallel to each other, the first connecting plate and the second connecting plate are parallel to each other, the first shaft core is hinged to the first connecting plate and the second connecting plate, a first mounting ring is provided at the rear end of the first shaft core, the first connecting plate and the first mounting ring abut against each other, the second shaft core is hinged to the first connecting plate and the second connecting plate, a second mounting ring is provided at the rear end of the second shaft core, and the first connecting plate abuts against the second mounting ring;
[0007] The first shaft core is provided with a first rotating bracket, a first rotating wheel and a first nut which rotate synchronously with the first shaft core, wherein the first rotating wheel is arranged between the first connecting plate and the second connecting plate, and the first nut is arranged between the second connecting plate and the front end of the first shaft core;
[0008] A second rotating bracket, a second rotating wheel and a second nut which rotate synchronously with the second shaft core are installed on the second shaft core, the second rotating wheel is arranged between the first connecting plate and the second connecting plate, and the second nut is arranged between the second connecting plate and the front end of the second shaft core;
[0009] The first rotating bracket and the second rotating bracket are respectively connected to two components of the product;
[0010] The third rotating wheel is movably installed between the first connecting plate and the second connecting plate, and between the first rotating wheel and the second rotating wheel;
[0011] The first rotating wheel can rotate with the first shaft core to force the third rotating wheel to move toward the second rotating wheel; the second rotating wheel can rotate with the second shaft core to force the third rotating wheel to move toward the first rotating wheel;
[0012] The first rotating wheel is provided with a first limiting notch and a second limiting notch, the second rotating wheel is provided with a third limiting notch and a fourth limiting notch, the first connecting plate is provided with a first clamping block and a second clamping block, the first clamping block is located in the second limiting notch, and the first clamping block abuts against the end of the second limiting notch to limit the rotation of the first rotating wheel and the first shaft core, the second clamping block is located in the fourth limiting notch, and the second clamping block abuts against the end of the second limiting notch to limit the rotation of the second rotating wheel and the second shaft core, after the third rotating wheel moves, it can engage with the first limiting notch to limit the rotation of the first rotating wheel, or engage with the third limiting notch to limit the rotation of the second rotating wheel.
[0013] Optionally, a first pressure block and a first elastic sheet which rotate synchronously with the first shaft core are installed on the first shaft core, the first pressure block and the first elastic sheet are arranged between the second connecting plate and the first nut, a first concave-convex surface is arranged on the rear side of the first pressure block, a third concave-convex surface is arranged on the front side of the second connecting plate, the first concave-convex surface abuts against the third concave-convex surface, the first concave-convex surface rotates with the first pressure block and the first shaft core, and forces the first pressure block to move along the length direction of the first shaft core, and the first pressure block forces the first elastic sheet to deform after moving;
[0014] A second pressure block and a second elastic sheet which rotate synchronously with the second shaft core are installed on the second shaft core, the second pressure block and the second elastic sheet are arranged between the second connecting plate and the second nut, a second concave-convex surface is arranged on the rear side of the second pressure block, a fourth concave-convex surface is arranged on the front side of the second connecting plate, the second concave-convex surface is abutted against the fourth concave-convex surface, the second concave-convex surface rotates with the second pressure block and the second shaft core, and forces the second pressure block to move along the length direction of the second shaft core, and the second pressure block forces the second elastic sheet to deform after moving.
[0015] Optionally, the first concave-convex surface, the second concave-convex surface, the third concave-convex surface and the fourth concave-convex surface all have a convex plane, an inclined plane and a concave plane arranged in sequence in a ring shape.
[0016] Optionally, it further includes a shell having an assembly space, and the upper part of the first rotating assembly is installed in the assembly space.
[0017] Optionally, it also includes a second rotating component, which includes two wire cores and a signal line. The two wire cores are parallel to each other, and the first core and the second core are respectively located on the same straight line as the two wire cores. The two wire cores are also respectively equipped with a first rotating bracket and a second rotating bracket, and the signal line passes through the two wire cores in sequence.
[0018] Optionally, a third mounting ring and a fixing plate are provided on the two wire shaft cores, and the first rotating bracket and the second rotating bracket are respectively located between the third mounting ring and the fixing plate of the two wire shaft cores.
[0019] Optionally, the first rotating bracket includes a first base and a first connecting piece, the first base is connected to a component of the product, and the first connecting piece is connected to the first shaft core;
[0020] The second rotating bracket includes a second base and a second connecting piece, the second base is connected to a component of the product, and the second connecting piece is connected to the second shaft core.
[0021] Optionally, the first base and the first connecting piece are perpendicular to each other, and the second base and the second connecting piece are perpendicular to each other.
[0022] Optionally, a first cutting surface is provided on the first shaft core, the first rotating bracket and the first rotating wheel are both provided with a clamping hole, and the first shaft core is clamped with the first rotating bracket and the first rotating wheel;
[0023] The second shaft core is provided with a second cutting surface, the second rotating bracket and the second rotating wheel are both provided with clamping holes, and the second shaft core is clamped with the second rotating bracket and the second rotating wheel.
[0024] Optionally, a first washer is provided on the first shaft core, and the first washer is located between the first connecting plate and the first nut;
[0025] A second washer is disposed on the second shaft core, and the second washer is located between the second connecting plate and the second nut.
[0026] The technical solution of the utility model has the following beneficial effects:
[0027] 1. By setting the first connecting plate, the second connecting plate, the first axis core, the second axis core, the first rotating wheel, the second rotating wheel and the third rotating wheel, when the user folds or opens the product, only the two parts connected by the rotating shaft can be rotated in a fixed sequence, thereby improving the smoothness and convenience of user operation.
[0028] 2. By setting the second connecting plate, the first pressing block, the second pressing block, the first spring sheet and the second spring sheet, a pre-load torque can be generated to eliminate the gap on the screw, thereby increasing the rigidity of the screw. This is conducive to ensuring the stability and accuracy of the shaft during operation. Specifically, the main purpose of the pre-load torque is to eliminate the gap of the screw and increase the rigidity of the screw, thereby ensuring the stability and accuracy of the shaft during operation. Secondly, the pre-load torque can optimize the performance of the shaft; by setting the pre-load torque, the shaft can rotate more smoothly when subjected to external loads, reduce vibration and impact force, and thus extend the service life of the shaft. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0030] Figure 1 The overall structure of a rotating shaft used for a folding electronic piano according to an embodiment of the utility model is shown in FIG. Figure 1 ;
[0031] Figure 2 The schematic diagram of the exploded structure of a rotating shaft used for a folding electronic piano according to an embodiment of the utility model is shown in FIG. Figure 1 ;
[0032] Figure 3 The schematic diagram of the exploded structure of a rotating shaft used for a folding electronic piano according to an embodiment of the utility model is shown in FIG. Figure 2 ;
[0033] Figure 4 The schematic diagram of the exploded structure of a rotating shaft used for a folding electronic piano according to an embodiment of the utility model is shown in FIG. Figure 3 ;
[0034] Figure 5 The partial structure of the first rotating wheel, the second rotating wheel and the third rotating wheel applied to the rotating shaft of the folding electronic piano in one embodiment of the utility model is shown in FIG. Figure 1 ;
[0035] Figure 6 The partial structure of the second connecting plate of the rotating shaft of the folding electronic piano according to one embodiment of the utility model is shown in FIG. Figure 2 ;
[0036] Figure 7 The partial structure of the second spring piece applied to the rotating shaft of the folding electronic piano according to one embodiment of the utility model is shown in FIG. Figure 3 .
[0037] Description of the accompanying drawings: housing 100, front cavity 110, rear cavity 120, first rotating bracket 200, first base 210, first connecting piece 220, second rotating bracket 300, second base 310, second connecting piece 320, first shaft core 400, first mounting ring 410, first cutting surface 420, first rotating wheel 430, first limiting notch 4301, second limiting notch 4302, first pressing block 440, first concave-convex surface 4401, first elastic sheet 450, first gasket 460, first Nut 470, second axis core 500, second mounting ring 510, second cutting surface 520, second rotating wheel 530, third limiting notch 5301, fourth limiting notch 5302, second pressure block 540, second concave-convex surface 5401, second spring piece 550, second washer 560, second nut 570, first connecting plate 600, second connecting plate 700, third concave-convex surface 710, fourth concave-convex surface 720, third rotating wheel 800, wire axis core 900, signal line 910, fixing plate 920.
[0038] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0040] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0041] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0042] The utility model provides a rotating shaft applied to a foldable electronic piano.
[0043] like Figures 1 to 7As shown, in one embodiment of the utility model, the rotating shaft applied to the folding electronic piano includes a housing 100, a first rotating assembly and a second rotating assembly. In this embodiment, the first rotating assembly is arranged at the rear end of the rotating shaft applied to the folding electronic piano, and the second rotating assembly is arranged at the front end. Specifically, the housing 100 has an assembly space, and the upper parts of the first rotating assembly and the second rotating assembly are both installed in the assembly space.
[0044] like Figure 2 As shown, in this embodiment, the first rotating assembly includes a first shaft core 400, a second shaft core 500, a first connecting plate 600 and a second connecting plate 700 arranged in a tic-tac-toe shape, the first shaft core 400 and the second shaft core 500 are parallel to each other, and the first connecting plate 600 and the second connecting plate 700 are parallel to each other. Specifically, the first shaft core 400 is hinged to one side of the first connecting plate 600 and the second connecting plate 700, a first mounting ring 410 is provided at the rear end of the first shaft core 400, and the rear side surface of the first connecting plate 600 is against the front side surface of the first mounting ring 410; the second shaft core 500 is hinged to the other side of the first connecting plate 600 and the second connecting plate 700, a second mounting ring 510 is provided at the rear end of the second shaft core 500, and the rear side surface of the first connecting plate 600 is against the front side surface of the second mounting ring 510.
[0045] like Figure 3 and 4As shown, in this embodiment, a first rotating bracket 200, a first rotating wheel 430, a first pressure block 440, a first spring piece 450, a first washer 460 and a first nut 470 that rotate synchronously with the first shaft core 400 are installed on the first shaft core 400; specifically, the first rotating bracket 200 is arranged between the rear end of the first shaft core 400 and the first mounting ring 410, the first rotating wheel 430 is arranged between the first connecting plate 600 and the second connecting plate 700, and the first pressure block 440, the first spring piece 450, the first washer 460 and the first nut 470 are arranged from back to front in sequence between the second connecting plate 700 and the front end of the first shaft core 400. Similarly, the second rotating bracket 300, the second rotating wheel 530, the second pressing block 540, the second spring piece 550, the second washer 560 and the second nut 570 which rotate synchronously with the second shaft core 500 are installed on the second shaft core 500; specifically, the second rotating bracket 300 is arranged between the rear end of the second shaft core 500 and the second mounting ring 510, the second rotating wheel 530 is arranged between the second connecting plate 700 and the second connecting plate 700, and the second pressing block 540, the second spring piece 550, the second washer 560 and the second nut 570 are arranged from the back to the front in sequence between the second connecting plate 700 and the front end of the second shaft core 500. In this embodiment, the first washer 460 and the second washer 560 are used to increase the contact area between the first spring piece 450 and the first nut 470, and between the second spring piece 550 and the second nut 570, respectively, so as to disperse the pressure between the above four, thereby preventing loosening and protecting the surfaces of the above four.
[0046] Specifically, two first cutting surfaces 420 are symmetrically provided on the first shaft core 400, and the above-mentioned first rotating bracket 200, the first rotating wheel 430 and the first pressing block 440 are all provided with clamping holes, and the first rotating bracket 200, the first rotating wheel 430 and the first pressing block 440 are all clamped with the first shaft core 400 through the first cutting surfaces 420 and the clamping holes; secondly, the above-mentioned first elastic sheet 450 and the first washer 460 are both provided with through holes, and the two are respectively penetrated on the first shaft core 400 through the through holes; finally, the first nut 470 is threadedly connected to the front end of the first shaft core 400. Similarly, two second cutting surfaces 520 are symmetrically provided on the second shaft core 500, and the above-mentioned second rotating bracket 300, the second rotating wheel 530 and the second pressing block 540 are all provided with clamping holes, and the second rotating bracket 300, the second rotating wheel 530 and the second pressing block 540 are all clamped with the second shaft core 500 through the second cutting surfaces 520 and the clamping holes; secondly, the above-mentioned second spring piece 550450 and the second washer 560460 are both provided with through holes, and the two are respectively penetrated on the second shaft core 500 through the through holes; finally, the second nut 570 is threadedly connected to the front end of the second shaft core 500.
[0047] like Figure 2 ,3 As shown in FIG. 4 , the first rotating bracket 200 includes a first base 210 and a first connecting piece 220. The first base 210 is provided with a plurality of connecting holes. The first base 210 is connected to a side component of the product through the connecting holes. A clamping hole is provided on the first connecting piece 220. The first connecting piece 220 is connected to the first shaft core 400 through the clamping hole. Similarly, the second rotating bracket 300 includes a second base 310 and a second connecting piece 320. The second base 310 is also provided with a plurality of connecting holes. The second base 310 is connected to the other side component of the product through the connecting holes. A clamping hole is provided on the second connecting piece 320. The second connecting piece 320 is connected to the second shaft core 500 through the clamping hole. In addition, the first base 210 and the first connecting piece 220 are perpendicular to each other, and the second base 310 and the second connecting piece 320 are perpendicular to each other.
[0048] It is worth noting that: the first connecting plate 600 and the second connecting plate 700 are both provided with mounting holes, and the third rotating wheel 800 is provided with a mounting shaft. The third rotating wheel 800 can be movably mounted between the first connecting plate 600 and the second connecting plate 700, and between the first rotating wheel 430 and the second rotating wheel 530 through the mounting shaft and the mounting hole. Specifically, the first rotating wheel 430 can rotate with the first shaft core 400 to force the third rotating wheel 800 to move toward the second rotating wheel 530; the second rotating wheel 530 can also rotate with the second shaft core 500 to force the third rotating wheel 800 to move toward the first rotating wheel 430.
[0049] like Figure 3 , 4As shown in Figures 5 and 6, a first limiting notch 4301 and a second limiting notch 4302 are provided on the first rotating wheel 430, a third limiting notch 5301 and a fourth limiting notch 5302 are provided on the second rotating wheel 530, and a first clamping block and a second clamping block are provided on the first connecting plate 600. In this embodiment, the first clamping block is located in the second limiting notch 4302, and when the first shaft core 400 and the first rotating wheel 430 rotate, the first limiting notch 4301 and the second limiting notch 4302 are driven to rotate, and the first clamping block can be abutted against the ends of the two ends of the second limiting notch 4302, thereby limiting the rotation of the first rotating wheel 430 and the first shaft core 400. Similarly, the second clamping block is located in the fourth limiting notch 5302. When the second shaft core 500 and the second rotating wheel 530 rotate, the second limiting notch 4302 and the second limiting notch 4302 will be driven to rotate. The second clamping block can abut against the ends of the second limiting notch 4302 to limit the rotation of the second rotating wheel 530 and the second shaft core 500. In addition, when the third rotating wheel 800 is moved by the first rotating wheel 430 or the second rotating wheel 530, it can be engaged with the first limiting notch 4301 to limit the rotation of the first rotating wheel 430, or engaged with the third limiting notch 5301 to limit the rotation of the second rotating wheel 530.
[0050] like Figure 5 As shown, in this embodiment, when the rotating shaft used for the folding electronic piano is in the open state in use, the first limiting notch 4301 faces the third rotating wheel 800, and the third limiting notch 5301 faces upward. At this time, the outer edge of the second rotating wheel 530 abuts against the outer edge of the third rotating wheel 800, and the third rotating wheel 800 is pressed by the second rotating wheel 530 and moves toward the first rotating wheel 430, causing the outer edge of the third rotating wheel 800 to engage with the first limiting notch 4301, thereby limiting the first rotating wheel 430 from rotating in the clockwise direction; in addition, at this time, the first clamping block abuts against one end of the second limiting notch 4302, thereby limiting the first rotating wheel 430 from rotating in the counterclockwise direction.
[0051] Therefore, when the user needs to change the product from the open state to the folded state, the user can only rotate the second rotating bracket 300 and the second shaft core 500 to rotate the third limiting notch 5301 counterclockwise by 90 degrees toward the third rotating wheel 800. At this time, the second block is located at one end of the fourth limiting notch 5302, thereby limiting the second rotating wheel 530 from continuing to rotate in the counterclockwise direction; in addition, the first limiting notch 4301 is opposite to the third limiting notch 5301; then, the third rotating wheel 800 can move between the first limiting notch 4301 and the third limiting notch 5301, so the user can rotate the first rotating bracket 200 and the first shaft core 400 to rotate the first rotating wheel 430 by 90 degrees in the clockwise direction until the first limiting notch 4301 faces downward, at which time the outer edge of the first rotating wheel 430 abuts against the outer edge of the third rotating wheel 800, and the third rotating wheel 800 is pressed by the first rotating wheel 430 and moves toward the second rotating wheel 530, causing the outer edge of the third rotating wheel 800 to engage with the third limiting notch 5301, thereby limiting the second rotating wheel 530 from rotating in the clockwise direction. Finally, the user performs the above operation in reverse, thereby changing the product from the idle folded state to the opened state.
[0052] like Figure 6 and 7 As shown, in this embodiment, a first concave-convex surface 4401 is provided on the rear side of the first pressing block 440, and a third concave-convex surface 710 is provided on the front side of the second connecting plate 700. The first concave-convex surface 4401 abuts against the third concave-convex surface 710. The first concave-convex surface 4401 will rotate with the first pressing block 440 and the first shaft core 400, and force the first pressing block 440 to move along the length direction of the first shaft core 400. After the first pressing block 440 moves, it will force the first spring piece 450 to deform. Similarly, the second pressing block 540 is provided with a second concave-convex surface 5401 at the rear side, and the second connecting plate 700 is provided with a fourth concave-convex surface 720 at the front side. The second concave-convex surface 5401 abuts against the fourth concave-convex surface 720. The second concave-convex surface 5401 rotates with the second pressing block 540 and the second shaft core 500, and forces the second pressing block 540 to move along the length direction of the second shaft core 500. After the second pressing block 540 moves, the second elastic sheet 550 is forced to deform. Specifically, the first concave-convex surface 4401, the second concave-convex surface 5401, the third concave-convex surface 710, and the fourth concave-convex surface 720 all have a convex plane, an inclined plane, and a concave plane arranged in sequence in a ring shape.
[0053] like Figure 1 , 2As shown in Figures 3 and 4, in this embodiment, the second rotating assembly specifically includes two wire shaft cores 900 and a signal line 910. The two wire shaft cores 900 are parallel to each other. The first shaft core 400 and one of the wire shaft cores 900 are located in the same straight line, and the second shaft core 500 and the other wire shaft core 900 are located in the same straight line. The first rotating bracket 200 and the second rotating bracket 300 are respectively installed on the two wire shaft cores 900, and the third mounting ring and the fixing plate 920 are provided on the two wire shaft cores 900. The first rotating bracket 200 and the second rotating bracket 300 are respectively inserted between the third mounting ring and the fixing plate 920 of the two wire shaft cores 900. In addition, the signal line 910 passes through the two wire shaft cores 900 in sequence, and the two components of the product can be connected through the signal line 910.
[0054] It is worth noting that the above-mentioned assembly space specifically includes the front cavity 110 and the rear cavity 120. The first connecting plate 600, the second connecting plate 700, the front section of the first shaft core 400, the first rotating wheel 430, the first pressing block 440, the first elastic sheet 450, the first washer 460, the first nut 470, the front section of the second shaft core 500, and the second rotating wheel 530, the second pressing block 540, the second elastic sheet 550, the second washer 560, and the second nut 570 arranged on the second shaft core 500 in the first rotating assembly are all arranged in the rear cavity 120. The two wire shaft cores 900 in the second rotating assembly are both arranged in the front cavity 110, and the section of the signal line 910 located between the two wire shaft cores 900 is also located in the front cavity 110. In this embodiment, the housing 100 can accommodate, install and protect the above-mentioned structures.
[0055] Specifically, the working principle and process of the utility model are:
[0056] 1. By setting the first connecting plate 600, the second connecting plate 700, the first axis core 400, the second axis core 500, the first rotating wheel 430, the second rotating wheel 530 and the third rotating wheel 800, when the user folds or opens the product, only the two parts connected by the rotating shaft can be rotated in a fixed sequence, thereby improving the smoothness and convenience of user operation.
[0057] Specifically, when the rotating shaft used in the folding electronic piano is in the open state in use, the first limiting notch 4301 faces the third rotating wheel 800, and the third limiting notch 5301 faces upward. At this time, the outer edge of the second rotating wheel 530 abuts against the outer edge of the third rotating wheel 800, and the third rotating wheel 800 is pressed by the second rotating wheel 530 and moves toward the first rotating wheel 430, causing the outer edge of the third rotating wheel 800 to engage with the first limiting notch 4301, thereby limiting the first rotating wheel 430 from rotating in the clockwise direction; in addition, at this time, the first clamping block abuts against one end of the second limiting notch 4302, thereby limiting the first rotating wheel 430 from rotating in the counterclockwise direction.
[0058] Therefore, when the user needs to change the product from the open state to the folded state, the user can only rotate the second rotating bracket 300 and the second shaft core 500 first, so that the third limiting notch 5301 rotates 90 degrees in the counterclockwise direction and faces the third rotating wheel 800. At this time, the second clamping block is located at an end of the fourth limiting notch 5302, thereby limiting the second rotating wheel 530 from continuing to rotate in the counterclockwise direction; in addition, the first limiting notch 4301 is opposite to the third limiting notch 5301. Then, the third rotating wheel 800 can move between the first limiting notch 4301 and the third limiting notch 5301, so the user can rotate the first rotating bracket 200 and the first shaft core 400 to rotate the first rotating wheel 430 by 90 degrees in the clockwise direction until the first limiting notch 4301 faces downward, at which time the outer edge of the first rotating wheel 430 abuts against the outer edge of the third rotating wheel 800, and the third rotating wheel 800 is pressed by the first rotating wheel 430 and moves toward the second rotating wheel 530, causing the outer edge of the third rotating wheel 800 to engage with the third limiting notch 5301, thereby limiting the clockwise rotation of the second rotating wheel 530. Finally, the user performs the above operation in reverse, thereby changing the product from the idle folded state to the opened state.
[0059] 2. By setting the second connecting plate 700, the first pressing block 440, the second pressing block 540, the first spring piece 450 and the second spring piece 550, a pre-load torque can be generated to eliminate the gap on the screw, thereby increasing the rigidity of the screw. This is conducive to ensuring the stability and accuracy of the shaft during operation. Specifically, the main purpose of the pre-load torque is to eliminate the gap of the screw and increase the rigidity of the screw, thereby ensuring the stability and accuracy of the shaft during operation. Secondly, the pre-load torque can optimize the performance of the shaft; by setting the pre-load torque, the shaft can rotate more smoothly when subjected to external loads, reduce vibration and impact force, and thus extend the service life of the shaft.
[0060] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.
Claims
1. A rotating shaft for a foldable electronic piano, characterized in that: The invention comprises a first rotating assembly, wherein the first rotating assembly comprises a first shaft core, a second shaft core, a first connecting plate and a second connecting plate arranged in a tic-tac-toe shape, wherein the first shaft core is parallel to the second shaft core, the first connecting plate is parallel to the second connecting plate, the first shaft core is hinged to the first connecting plate and the second connecting plate, a first mounting ring is provided at the rear end of the first shaft core, the first connecting plate abuts against the first mounting ring, the second shaft core is hinged to the first connecting plate and the second connecting plate, a second mounting ring is provided at the rear end of the second shaft core, the first connecting plate abuts against the second mounting ring; The first shaft core is provided with a first rotating bracket, a first rotating wheel and a first nut which rotate synchronously with the first shaft core, wherein the first rotating wheel is arranged between the first connecting plate and the second connecting plate, and the first nut is arranged between the second connecting plate and the front end of the first shaft core; A second rotating bracket, a second rotating wheel and a second nut which rotate synchronously with the second shaft core are installed on the second shaft core, the second rotating wheel is arranged between the first connecting plate and the second connecting plate, and the second nut is arranged between the second connecting plate and the front end of the second shaft core; The first rotating bracket and the second rotating bracket are respectively connected to two components of the product; The third rotating wheel is movably installed between the first connecting plate and the second connecting plate, and between the first rotating wheel and the second rotating wheel; The first rotating wheel can rotate with the first shaft core to force the third rotating wheel to move toward the second rotating wheel; the second rotating wheel can rotate with the second shaft core to force the third rotating wheel to move toward the first rotating wheel; The first rotating wheel is provided with a first limiting notch and a second limiting notch, the second rotating wheel is provided with a third limiting notch and a fourth limiting notch, the first connecting plate is provided with a first clamping block and a second clamping block, the first clamping block is located in the second limiting notch, and the first clamping block abuts against the end of the second limiting notch to limit the rotation of the first rotating wheel and the first shaft core, the second clamping block is located in the fourth limiting notch, and the second clamping block abuts against the end of the second limiting notch to limit the rotation of the second rotating wheel and the second shaft core, after the third rotating wheel moves, it can engage with the first limiting notch to limit the rotation of the first rotating wheel, or engage with the third limiting notch to limit the rotation of the second rotating wheel.
2. The rotating shaft for a foldable electronic piano according to claim 1, characterized in that: The first shaft core is provided with a first pressing block and a first elastic sheet which rotate synchronously with the first shaft core. The first pressing block and the first elastic sheet are arranged between the second connecting plate and the first nut. The rear side of the first pressing block is provided with a first concave-convex surface, and the front side of the second connecting plate is provided with a third concave-convex surface. The first concave-convex surface abuts against the third concave-convex surface. The first concave-convex surface rotates with the first pressing block and the first shaft core, thereby forcing the first pressing block to move along the length direction of the first shaft core. After the first pressing block moves, the first elastic sheet is forced to deform. A second pressure block and a second elastic sheet which rotate synchronously with the second shaft core are installed on the second shaft core, the second pressure block and the second elastic sheet are arranged between the second connecting plate and the second nut, a second concave-convex surface is arranged on the rear side of the second pressure block, a fourth concave-convex surface is arranged on the front side of the second connecting plate, the second concave-convex surface is abutted against the fourth concave-convex surface, the second concave-convex surface rotates with the second pressure block and the second shaft core, and forces the second pressure block to move along the length direction of the second shaft core, and the second pressure block forces the second elastic sheet to deform after moving.
3. The rotating shaft for a foldable electronic piano according to claim 2, characterized in that: The first concave-convex surface, the second concave-convex surface, the third concave-convex surface and the fourth concave-convex surface all have a convex plane, an inclined plane and a concave plane arranged in sequence in a ring shape.
4. The rotating shaft for a foldable electronic keyboard according to claim 1, characterized in that: It also includes a shell having an assembly space, and the upper part of the first rotating assembly is installed in the assembly space.
5. The rotating shaft for a foldable electronic piano according to claim 1, characterized in that: It also includes a second rotating component, which includes two wire cores and a signal line. The two wire cores are parallel to each other, and the first core and the second core are respectively located on the same straight line as the two wire cores. The two wire cores are also respectively equipped with a first rotating bracket and a second rotating bracket, and the signal line passes through the two wire cores in sequence.
6. The rotating shaft for a foldable electronic piano according to claim 5, characterized in that: The two conductor shaft cores are both provided with a third mounting ring and a fixing plate, and the first rotating bracket and the second rotating bracket are respectively located between the third mounting ring and the fixing plate of the two conductor shaft cores.
7. The rotating shaft for a foldable electronic keyboard according to claim 1, characterized in that: The first rotating bracket includes a first base and a first connecting piece, the first base is connected to a component of the product, and the first connecting piece is connected to the first shaft core; The second rotating bracket includes a second base and a second connecting piece, the second base is connected to a component of the product, and the second connecting piece is connected to the second shaft core.
8. The rotating shaft for a foldable electronic keyboard according to claim 7, characterized in that: The first base and the first connecting piece are perpendicular to each other, and the second base and the second connecting piece are perpendicular to each other.
9. The rotating shaft for a foldable electronic piano according to claim 1, characterized in that: The first shaft core is provided with a first cutting surface, the first rotating bracket and the first rotating wheel are both provided with clamping holes, and the first shaft core is clamped with the first rotating bracket and the first rotating wheel; The second shaft core is provided with a second cutting surface, the second rotating bracket and the second rotating wheel are both provided with clamping holes, and the second shaft core is clamped with the second rotating bracket and the second rotating wheel.
10. The rotating shaft for a foldable electronic piano according to claim 1, characterized in that: A first washer is disposed on the first shaft core, and the first washer is located between the first connecting plate and the first nut; A second washer is disposed on the second shaft core, and the second washer is located between the second connecting plate and the second nut.