Rotating shaft assembly and foldable equipment
By combining a rotating shaft and an elastic friction element, and using limiting bosses and limiting notches to achieve rotational limiting, the problem of low reliability of the rotating shaft in foldable devices is solved, and a high-stability and low-cost rotation effect is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-21
- Publication Date
- 2026-04-10
AI Technical Summary
Existing foldable device hinge products have low reliability, metal brackets increase costs, and complex transmission components are difficult to produce, have high assembly costs, and are prone to failure.
The first and second rotating bodies are connected by a rotating shaft and an elastic friction element. The rotation is limited by a limiting boss and a limiting notch. The elastic deformation of the elastic friction element generates frictional resistance, thereby achieving a high torque effect.
Without relying on metal supports, a large pivot torque with high stability and reliability is achieved, reducing product structure costs and improving the rotational stability and reliability of foldable devices.
Smart Images
Figure CN224107551U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a rotating shaft subassembly technical field, concretely relates to a rotating shaft subassembly and foldable equipment. BACKGROUND
[0002] With the wide application of wireless charging technology, folding wireless chargers are favored by the market because of their convenience and flexibility. The rotating shaft assembly of the existing folding wireless charger usually relies on metal supports or complex transmission assemblies with screws to achieve a large rotating shaft assembly torque to ensure the stability after folding and the reliability during use. However, the use of metal supports significantly increases product costs, and complex transmission assemblies not only have high production difficulty and assembly cost, but also are prone to failure, reducing product reliability. SUMMARY
[0003] The main purpose of the utility model is to provide a rotating shaft subassembly, aiming to solve the problem of low reliability of existing foldable equipment rotating shaft products.
[0004] To achieve the above-mentioned purpose, the first aspect of the utility model provides a rotating shaft subassembly, comprising:
[0005] A rotating shaft comprises a first connecting part, a limiting ring, and a shaft body connected in sequence. The limiting ring is connected to the shaft body at one end and has a protruding limiting boss. The first connecting part is used for fixed connection with a first rotating body;
[0006] An elastic friction member comprises an open shaft sleeve with a damping through hole and a first connecting piece. The open shaft sleeve is provided with a limiting notch. The first connecting piece is used for connecting with a second rotating body. The central angle of the limiting notch is greater than that of the limiting boss;
[0007] When the rotating shaft is connected to the damping through hole through the shaft body, one end of the open shaft sleeve abuts against the limiting ring, and the limiting boss is clamped in the limiting notch.
[0008] In a preferred embodiment, the shaft body is provided with a flat position corresponding to one side of the limiting boss, and the damping through hole is provided with a flat surface matched with the flat position.
[0009] In a preferred embodiment, the first connecting piece is a clamping plate formed by extending one end of the open shaft sleeve outward.
[0010] In a preferred embodiment, an annular groove is formed in the shaft body.
[0011] As the second aspect of the utility model, the utility model also provides a foldable device, including first rotator and second rotator can rotate relative, still include the pivot assembly that any of the utility model first aspect is described, the first rotator is connected with the rotating shaft, the second rotator is connected with the elastic friction piece.
[0012] In a preferred scheme of the foldable device, the first connecting part is flat, the first rotator includes a first rotating part, and a flat shaft hole matched with the first connecting part is arranged on the first rotating part, and the rotating shaft is arranged in the flat shaft hole.
[0013] In a preferred scheme of the foldable device, the second rotator includes second rotating parts arranged on both sides of the first rotating part respectively, at least one side of the second rotating part is provided with a second shaft hole for the elastic friction piece to pass through and a clamping part for clamping the first connecting part, the elastic friction piece is arranged in the second shaft hole, and the first connecting part is clamped on the clamping part, and the first rotator is rotatably connected to the second rotator through the pivot assembly.
[0014] In a preferred scheme of the foldable device, one end of the second rotating part is connected to one side of the second rotating part through the pivot assembly, and the other end is connected to the other side of the second rotating part through a bolt.
[0015] In a preferred scheme of the foldable device, the second shaft hole is provided with a reinforcing rib around the side.
[0016] In a preferred scheme of the foldable device, the foldable device is a foldable wireless charger.
[0017] Advantages
[0018] The pivot assembly of the utility model connects the first rotator and the second rotator through the rotating shaft and the elastic friction piece, the rotating shaft is connected to the damping through hole of the elastic friction piece through the shaft body damping, and the rotating shaft and the elastic friction piece are limited in rotation through the limiting convex and the limiting gap, when the rotating shaft rotates relatively, the elastic friction piece is elastically deformed to generate friction resistance, the pivot assembly has high stability and reliability, and large torque effect can be realized.
[0019] The foldable device with the pivot assembly realizes relative rotation of the foldable device through the pivot assembly, realizes large pivot torque without relying on a metal support, effectively reduces the product structure cost, and can ensure the stability and reliability of the foldable device. DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are only some of the embodiments of the present application, and not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.
[0021] Figure 1 The present application is a foldable device structure schematic diagram.
[0022] Figure 2 The present application is a foldable device exploded schematic diagram.
[0023] Figure 3 The present application is a pivot assembly overall structure schematic diagram.
[0024] Figure 4 The present application is a pivot assembly exploded schematic diagram.
[0025] Figure 5 The present application is another angle of the pivot assembly exploded schematic diagram.
[0026] Explanation of the drawing reference number:
[0027] 1, first rotating body; 10, first rotating part; 11, flat shaft hole;
[0028] 2, second rotating body; 20, second rotating part; 21, first shaft hole; 22, second shaft hole; 23, clamping part; 24, reinforcing rib; 25, 3M glue layer;
[0029] 3, rotating shaft; 30, first connecting part; 31, limiting ring; 32, shaft body; 321, flat position; 322, annular groove; 33, limiting boss;
[0030] 4, elastic friction part; 40, open shaft sleeve; 41, damping through hole; 411, flat surface; 42, clamping plate; 43, limiting notch;
[0031] 5, bolt. DETAILED DESCRIPTION
[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, and not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.
[0033] It should be noted that if the embodiments of the utility model have the direction indication (such as up, down, left, right, front, back), the direction indication is only used to explain the relative position relationship, movement condition and the like between components in a certain specific posture (as shown in the drawings), if the specific posture changes, then the direction indication also changes accordingly.
[0034] In addition, if the embodiments of the utility model have the description of "first", "second" and the like, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one feature. In addition, the meaning of "and / or" appearing in the whole text is that it includes three parallel schemes, taking "A and / or B" as an example, including A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the utility model.
[0035] Embodiment one
[0036] Embodiment one
[0037] In combination with the drawings Figures 1-5 In the embodiment one of the utility model, a rotating shaft assembly is provided, including rotating shaft 3 and elastic friction piece 4, wherein rotating shaft 3 and elastic friction piece 4 are used to connect first rotator 1 and second rotator 4 needing to rotate with each other respectively, so that first rotator 1 and second rotator 4 realize mutual rotation through rotating shaft assembly.
[0038] In combination with the drawings Figure 4 And Figure 5 In the rotating shaft assembly, rotating shaft 3 includes first connecting portion 30, limiting ring 31 and shaft body 32 connected in sequence, the connecting end of limiting ring 31 and shaft body 32 is provided with protruding limiting boss 33, and first connecting portion 30 is used to be fixedly connected with first rotator 1;Elastic friction piece 4 includes opening sleeve 40 provided with damping through hole 41 and first connecting piece, wherein limiting notch 43 is arranged on opening sleeve 40, first connecting piece is used to be connected with second rotator 4, the central angle of limiting notch 43 is greater than the central angle of limiting boss 33;When rotating shaft 3 is connected to damping through hole 41 through shaft body 32, one end of opening sleeve 40 abuts on limiting ring 31, and limiting boss 33 is clamped on limiting notch 43.
[0039] The rotating shaft assembly has the characteristics of high stability and reliability, and can realize large torque effect.
[0040] In the rotating shaft 3, the first connecting portion 30 is used for fixed connection with the first rotating body 1, so that synchronous rotation and stable connection between the rotating shaft 3 and the first rotating body 1 are ensured, and relative displacement does not occur; the outer diameter of the limiting ring 31 is greater than the outer diameter of the shaft body 32 and the outer diameter of the first connecting portion 30, so that the limiting effect is achieved, the rotating shaft assembly does not move after being assembled to the foldable device, and the stability of the rotating shaft assembly after assembly is ensured.
[0041] The central angle of the limiting notch 43 is greater than the notch of the limiting boss 33, so that the rotating range is obtained, and the greater the central angle of the limiting notch 43, the greater the rotatable angle range of the rotating shaft assembly, that is, the greater the relative rotating angle range of the first rotating body 1 and the second rotating body 4.
[0042] The elastic friction piece 4 comprises an open shaft sleeve 40, the open shaft sleeve 40 is provided with an open groove in the axial direction, the design of the open shaft sleeve 40 enables the elastic friction piece 4 to have a certain elastic deformation capacity, when the shaft body 32 of the rotating shaft 3 passes through the damping through hole 41 and cooperates with the damping through hole 41, the open shaft sleeve 40 can be elastically deformed appropriately, so that the friction force between the rotating shaft 3 and the elastic friction piece 4 is generated, the damping effect is formed, the rotation speed and the angle precision between the rotating bodies are controlled, the friction area and the damping force are greatly increased, the open shaft sleeve 40 of the elastic friction piece 4 can still maintain the clamping force unchanged during the use process, that is, the damping force between the rotating shaft 3 and the elastic friction piece 4 can be automatically compensated, so that the service life of the rotating shaft structure is greatly prolonged, and the requirement for the machining precision of the parts is also reduced.
[0043] In the utility model, the elastic friction part 4 is made of elastic metal material, such as manganese steel, and the surface is quenched, and the elastic brass H62, alloy spring steel and the like are also used, so as to ensure that the elastic friction part 4 can keep stable elastic property and small abrasion in long-term use.In other embodiments, the elastic spring part can also be excellent elastic and wear-resistant engineering plastics, rubber and the like, and the same can obtain greater friction coefficient and better damping effect.The rotating shaft 3 is manufactured by selecting alloy steel, stainless steel or aluminum alloy and the like, so as to meet the performance requirements in bending resistance, torsion resistance and wear resistance and the like.In the embodiment, medium carbon steel is specifically used, and the surface is quenched, so as to ensure wear resistance.The rotating shaft 3 and the elastic friction part 4 are fixed by being put into a jig, and are assembled by pneumatic stamping.
[0044] In a preferred mode of the embodiment, the shaft body 32 is provided with a flat portion 321 on one side corresponding to the limiting boss 33, and the damping through hole 41 is provided with a flat surface 411 matched with the flat portion 321.The flat portion 321 and the flat surface 411 are matched to form a non-circular matching surface, and the torque is transmitted through plane contact.Compared with pure circular matching, the flat portion 321 increases the friction and contact area, effectively avoids the circumferential slip of the part on the shaft, and ensures stable power transmission.Meanwhile, the flat portion 321 can be used as a circumferential positioning reference to ensure assembly accuracy and facilitate subsequent auxiliary disassembly machining.
[0045] In combination with the accompanying drawings Figure 4 Further, the annular groove 322 is formed on the shaft body 32, which can change the stress distribution on the surface of the rotating shaft 3, reduce the risk of fatigue failure of the rotating shaft 3, improve the strength and reliability of rotation, and compensate for the uneven problem of the interference amount between the rotating shaft 3 and the elastic friction part 4 to a certain extent.The annular groove 322 is preferably arranged at the middle segment of the shaft body 32, and the width of the annular groove 322 is not more than 1cm.
[0046] For the elastic friction part 4, the first connecting part is used to connect with the second rotating body 4, and the connection mode can be clamping, pin connection, clamping and the like.In a specific embodiment, the first connecting part is a clamping plate 42 formed by extending one end of the open shaft sleeve 40 outward, and the clamping plate 42 is clamped into the clamping groove of the second rotating body 4, which can ensure that the elastic friction part 4 does not rotate in the second rotation, realizes the connection between the elastic friction part 4 and the second rotating body 4, and the clamping plate 42 is extended from one end of the open shaft sleeve 40 to ensure the reliability of the elastic friction part 4.In other embodiments, the first connecting part can be a clamping block, or a positioning column, and the second rotating body 2 is provided with a structure for connecting with the first connecting part.
[0047] Preferably, the opening sleeve 40 is integrally formed with the clamping plate 42, that is, the elastic friction member 4 is integrally formed, and the rotating shaft 3 is integrally formed, so as to facilitate guaranteeing the stability of the parts.
[0048] Embodiment Two
[0049] In combination Figures 1-2 In the embodiment, a foldable device is requested to protect, which comprises a rotating shaft assembly as in Embodiment One.
[0050] Specifically, the foldable device comprises a first rotating body 1 and a second rotating body 4 which can rotate relative to each other and a rotating shaft assembly, the first rotating body 1 is connected with the rotating shaft 3 of the rotating shaft assembly, and the second rotating body 4 is connected with the elastic friction member 4 of the rotating shaft assembly.
[0051] The foldable device with the rotating shaft assembly realizes the relative rotation of the foldable device by the rotating shaft assembly, realizes a large rotating shaft torque without relying on a metal support, effectively reduces the product structure cost, and can guarantee the stability and reliability of the rotation of the foldable device.
[0052] Among them, the first rotating body 1 and the second rotating body 4 are two housings that can rotate relative to each other in the foldable device, which can be referred to as face shell and bottom shell, or upper shell and lower shell, etc. in other embodiments, which should not be a limitation to the present application.
[0053] In a preferred scheme of the embodiment, the first connecting part 30 is flat, the first rotating body 1 comprises a first rotating part 10, the first rotating part 10 is provided with a flat shaft hole 11 matched with the first connecting part 30, and the rotating shaft 3 is arranged in the flat shaft hole 11.
[0054] Specifically, in the embodiment, the first connecting part 30 of the rotating shaft 3 is flat, and the cross section is rectangular or elliptical. The first rotating body 1 comprises a first rotating part 10, that is, a part for connecting with the second rotating body 4. The first rotating part 10 is internally provided with a flat shaft hole 11 matched with the shape of the first connecting part 30. The shaft body 32 of the rotating shaft 3 is arranged in the flat shaft hole 11. The cooperation of the flat shaft hole 11 and the rotating shaft 3 can guarantee the stable connection of the first rotating body 1 and the rotating shaft 3.
[0055] The second rotating body 4 comprises a second rotating part 20 arranged on both sides of the first rotating part 10, respectively. The second rotating part 20 on at least one side is provided with a second shaft hole 22 for the elastic friction member 4 to pass through and a clamping part 23 for clamping the first connecting part. The elastic friction member 4 is arranged in the second shaft hole 22, and the first connecting part is clamped on the clamping part 23. The first rotating body 1 is rotatably connected to the second rotating body 4 through the rotating shaft assembly.
[0056] Specifically, two symmetrically arranged second rotating parts 20 are respectively located on both sides of the first rotating part 10, and at least one of the second rotating parts 20 is provided with a second shaft hole 22 and a clamping part 23 for mounting the elastic friction part 4. During installation, the open shaft sleeve 40 of the elastic friction part 4 is aligned with the second shaft hole 22, the open shaft sleeve 40 passes through the second shaft hole 22, and the first connecting part of the elastic friction part 4 is clamped with the clamping part 23. The first connecting part is fixed on the clamping part 23 by clamping, so that the elastic friction part 4 is firmly installed on the second rotating part 4. The clamping method has the advantages of convenient, fast, firm and reliable installation, which can effectively prevent the elastic friction part 4 from loosening or falling off during use, and ensure the normal work of the rotating shaft assembly. In one embodiment, as described in embodiment one, the first connecting part is a clamping plate 42, and the clamping part 23 is a clamping groove.
[0057] The accompanying drawings are incorporated Figure 2 In this embodiment, the second rotating part 20 is connected to the second rotating part 20 on one side through the rotating shaft assembly at one end of the first rotating part 10, and is connected to the second rotating part 20 on the other side through the bolt 5 at the other end. That is, a second shaft hole 22 is formed in one of the second rotating parts 20, and a first shaft hole 21 for the bolt 5 to pass through is formed in the other second rotating part 20. The first rotating part 10 is connected to the second rotating part 20 through the bolt 5 and the rotating shaft assembly of embodiment one at both ends.
[0058] Specifically, the first rotating part 10 is provided with a connecting through hole (not shown in the figure) on the side away from the flat shaft hole 11 for the bolt 5 to insert, and the second rotating part 20 on the other side is provided with a first shaft hole 21 for the bolt 5 to pass through. When installing the bolt 5, only need to align the first shaft hole 21 on the other end of the first rotating part 10 with the first shaft hole 21 on the other side of the second rotating part 20, and then insert and fix, which is simple and convenient to operate, and can effectively improve the overall structural strength and reliability of the foldable device.
[0059] This connection method not only ensures the stable rotating connection relationship between the first rotating part 1 and the second rotating part 4, but also enhances the stability of the overall structure of the foldable device through the fixing effect of the bolt 5, prevents unnecessary loosening or falling off between the first rotating part 1 and the second rotating part 4 caused by external force during use, and reduces the cost. The material of the bolt 5 can be high-strength alloy material to ensure that it has enough strength and rigidity to withstand various forces and moments during use.
[0060] Further, the first shaft hole 21 and the second shaft hole 22 are provided with reinforcing ribs 24 on the circumferential side, the reinforcing ribs 24 are distributed in a radial or grid shape, and are used to improve the anti-deformation capability of the first shaft hole 21 or the second shaft hole 22 area. Further, the reinforcing ribs 24 can be synchronously arranged on the circumferential side of the connecting through hole and the flat shaft hole 11 of the first rotating part 10.
[0061] Further, the first shaft hole 21 and the second shaft hole 22 are provided with reinforcing ribs 24 on the circumferential side, the reinforcing ribs 24 are distributed in a radial or grid shape, and are used to improve the anti-deformation capability of the first shaft hole 21 or the second shaft hole 22 area. Further, the reinforcing ribs 24 can be synchronously arranged on the circumferential side of the connecting through hole and the flat shaft hole 11 of the first rotating part 10.
[0062] In the embodiment, the foldable device is a foldable wireless charger, which is used for wireless charging. The first rotating part 1 and the second rotating part 4 of the foldable wireless charger can include a main control board, a transmitting coil and the like. The part of the structure is not the improvement point of the application and is the prior art, and thus is not described here.
[0063] In other embodiments, the foldable device can be a foldable mobile phone, a foldable support, a foldable tablet and the like.
[0064] The above is only the optional embodiment of the application, and does not limit the patent range of the application. Any equivalent structural transformation, direct / indirect application in other related technical fields under the application concept of the application, and the like are included in the patent protection range of the application.
Claims
1. A rotating shaft assembly, characterized in that, The utility model relates to a rotatable shaft assembly, comprising a rotating shaft, an elastic friction piece and a rotating body. The rotating shaft comprises a first connecting part, a limiting ring and a shaft body connected in sequence. The limiting ring is provided with a protruding limiting boss at the connecting end with the shaft body. The first connecting part is used for fixedly connecting with the first rotating body.
2. The hinge assembly of claim 1, wherein The elastic friction piece comprises an open shaft sleeve provided with a damping through hole and a first connecting piece.
3. The hinge assembly of claim 1, wherein, The open shaft sleeve is provided with a limiting notch.
4. The hinge assembly of claim 2, wherein, The first connecting piece is used for connecting with the second rotating body.
5. A foldable device comprising a first and a second rotatable body, characterized in that, The central angle of the limiting notch is larger than that of the limiting boss.
6. The foldable device of claim 5, wherein, When the rotating shaft is connected to the damping through hole through the shaft body, one end of the open shaft sleeve abuts against the limiting ring, and the limiting boss is clamped in the limiting notch.
7. The foldable device of claim 6, wherein, The shaft body is provided with a flat position corresponding to one side of the limiting boss.
8. The foldable device of claim 7, wherein, The damping through hole is provided with a flat surface matched with the flat position.
9. The foldable device of claim 8, wherein, The first connecting piece is a clamping plate formed by extending one end of the open shaft sleeve outward.
10. The foldable device of any of claims 5-9, wherein, The shaft body is provided with an annular groove. The utility model further comprises the rotating shaft assembly as claimed in any one of claims 1-4. The first connecting part is flat. The first rotating body comprises a first rotating part provided with a flat shaft hole matched with the first connecting part. The rotating shaft is arranged in the flat shaft hole. The second rotating body comprises second rotating parts arranged on both sides of the first rotating part. At least one of the second rotating parts is provided with a second shaft hole for the elastic friction piece and a clamping part for clamping the first connecting piece. The elastic friction piece is arranged in the second shaft hole, and the first connecting piece is clamped on the clamping part. The first rotating body is rotatably connected to the second rotating body through the rotating shaft assembly. One end of the second rotating part is connected to the second rotating body on one side through the rotating shaft assembly. The other end is connected to the second rotating body on the other side through a bolt. The second shaft hole is provided with a reinforcing rib. The foldable device is a foldable wireless charger.