Disc type friction rotating shaft

Abstract

The utility model relates to the technical field of friction rotating shafts, in particular to a disc type friction rotating shaft, which comprises a rotating shaft and a fixed cover which are rotatably connected with each other, one end of the rotating shaft is provided with a shaft rod, and the fixed cover is provided with a through hole and is sleeved on the shaft rod, so that the rotating connection is formed; the device further comprises a concave-convex gasket and a fastening nut, the concave-convex gasket is arranged on the shaft rod in a sleeving mode, the end, away from the rotating shaft, of the shaft rod is in threaded connection with the fastening nut, the fastening nut forms certain fastening pressure on one side of the concave-convex gasket, and therefore the other side of the concave-convex gasket abuts against the fixing cover. In conclusion, the rotating shaft can be suspended and locked at any angle in the rotating work, the use comfort of people is improved, and the service life of the rotating shaft can be prolonged. And the number of assembly parts is small, cost is low, and large-scale popularization is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of friction rotating shafts, in particular to a disc type friction rotating shaft. Background Art

[0002] In the prior art, the flip cover body is usually connected by a hinge. When opening the cover, a force equivalent to the weight of the cover must be applied. When closing the cover, due to the effect of gravity, the flip cover body needs to be supported by hand, which poses a safety hazard of pressing the hand. When the flip cover body falls quickly, it is also easy to produce a knocking sound, and long-term knocking will affect the use of the product. Moreover, the flip cover body cannot stop at a specific angle by itself. If the flip cover body needs to be stopped at a certain angle during use, it needs to be supported by manpower or additional supporting components, which is troublesome and inconvenient to use.

[0003] Later, a hinge mechanism emerged. This mechanism is typically installed between the lid and base of a flip-top device to open and close the lid relative to the base. The hinge mechanism typically consists of a shaft and a sleeve, secured to the lid and base, respectively. The shaft rotates through the sleeve, allowing the lid to rotate relative to the base. The friction between the sleeve and shaft creates a resistance force that allows the lid to be positioned in the desired position.

[0004] For example, the Chinese patent document with the announcement number CN201351674Y discloses a hub device, which includes a support frame with a pivot hole, a rotating shaft passing through the pivot hole of the support frame, an inclined slide, a clamping member and a fastener, the inclined slide is provided with an inclined sliding surface and a threaded hole, the clamping member includes a force-bearing part and a clamping part, the support frame is provided with a receiving groove, the inclined sliding surface of the inclined slide abuts the force-bearing part of the clamping member and is accommodated in the receiving groove of the support frame, the fastener includes a screw and a head, the fastener is screwed into the threaded hole of the inclined slide by its screw, the head of the fastener abuts against the support frame, and rotating the fastener can make the inclined slide move toward the head of the fastener, and the inclined sliding surface of the inclined slide pushes the clamping member to move toward the rotating shaft, thereby causing the clamping part to clamp the rotating shaft.

[0005] However, when the flip cover is frequently opened or closed, the sleeve and the shaft rod are easily worn, resulting in the sleeve and the shaft rod not being able to fit tightly or even becoming loose, thereby failing to provide sufficient frictional resistance, causing the flip cover to be unable to be well positioned relative to the base, affecting use.

[0006] In addition, a bowl-shaped spring leaf shaft has also appeared, but it requires a large number of parts and components, and its cost is relatively high for flip-top products with lower force requirements. Utility Model Content

[0007] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0008] The utility model provides a disc-type friction rotating shaft, comprising a rotating shaft and a fixed cover which are rotatably connected to each other, wherein one end of the rotating shaft is provided with a shaft rod, and the fixed cover is provided with a through hole and is sleeved on the shaft rod to form a rotating connection; the utility model also comprises a concave-convex gasket and a fastening nut, wherein the concave-convex gasket is sleeved on the shaft rod, and the end of the shaft rod away from the rotating shaft is threadedly connected with the fastening nut, so that the fastening nut forms a certain fastening pressure on one side of the concave-convex gasket, thereby causing the other side of the concave-convex gasket to abut against the fixed cover.

[0009] As a further solution of the present invention: the edge of the concave-convex gasket is provided with a deformation end which is raised to a certain height and bent at a certain angle. Under the tightening pressure of the tightening nut, the deformation end can be deformed to a certain extent, thereby generating corresponding deformation stress.

[0010] As a further solution of the present invention: it also includes a stop plate, which is sleeved on the shaft and rotates synchronously with the shaft, and an annular notch is provided on the outer periphery of the stop plate, thereby forming a first stop position and a second stop position at both ends of the annular notch respectively; the fixed cover is provided with a stop protrusion at the position corresponding to the annular notch, and the stop protrusion blocks the first stop position or the second stop position when the rotating shaft rotates.

[0011] As a further solution of the present invention: the stop plate is arranged between the concave-convex gasket and the fixed cover.

[0012] As a further solution of the present invention: it also includes a first gasket, which is sleeved on the shaft and rotates synchronously with the shaft, and is arranged between the fastening nut and the concave-convex gasket.

[0013] As a further solution of the present invention: it also includes a second gasket, which is sleeved on the shaft and rotates synchronously with the shaft, and is arranged between the fixed cover and the rotating shaft.

[0014] As a further solution of the present invention: a first mounting hole is further provided at one end of the rotating shaft away from the shaft rod, and the first mounting hole is used to mount the rotating shaft on an external rotating component.

[0015] As a further solution of the present invention: the fixing cover is further provided with a second mounting hole, and the second mounting hole is used to mount the fixing cover on the external fixing component.

[0016] As a further solution of the present invention: the shaft is provided with a square portion, and the stop plate, the first gasket and the second gasket are respectively provided with square holes, so that they are sleeved on the square portion of the shaft through the square holes, thereby forming a connection structure that rotates synchronously with the shaft.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. By arranging concave-convex gaskets on the shaft, and using the tightening pressure of the fastening nut on the concave-convex gaskets, it causes a certain deformation, thereby using its deformation stress to form axial friction on the fixed cover, so that the rotation of the shaft is subject to a certain resistance, so that the shaft can hover at any angle, making it easier for users to use the flip cover.

[0019] 2. A stop plate is provided and the stop position of the stop plate is used to block the stop protrusion of the fixed cover, thereby limiting the rotation angle of the rotating shaft so that it can be locked within the required rotation angle for rotation, which is convenient for people to use.

[0020] Therefore, through the above improvements, the present invention can provide a disc-type friction shaft that can be hovered and locked at any angle during rotation, improving user comfort and extending the shaft's service life. Furthermore, it requires fewer assembly parts, is relatively low in cost, and is easily applicable on a large scale.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a schematic cross-sectional view of the entirety of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the concave-convex gasket of the present utility model;

[0026] Figure 4 It is a structural schematic diagram of the utility model in a separated state.

[0027] The reference numerals and names in the figures are as follows:

[0028] 10 rotating shaft; 11 shaft; 12 first mounting hole; 13 square portion; 20 fixing cover; 21 stopper protrusion; 22 second mounting hole; 30 concave-convex gasket; 31 deformation end; 40 stopper plate; 41 annular notch; 42 first stop position; 43 second stop position; 50 first gasket; 60 second gasket; 70 fastening nut. DETAILED DESCRIPTION

[0029] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figures 1 to 4 In an embodiment of the utility model, a disc-type friction shaft includes a shaft 10 and a fixed cover 20 that are rotatably connected to each other, and one end of the shaft 10 is provided with a shaft rod 11, and the fixed cover 20 is provided with a through hole and is sleeved on the shaft rod 11, thereby forming a rotating connection; it also includes a concave-convex gasket 30 and a fastening nut 70, the concave-convex gasket 30 is sleeved on the shaft rod 11, and the end of the shaft rod 11 away from the shaft 10 is threadedly connected with the fastening nut 70, so that the fastening nut 70 forms a certain fastening pressure on one side of the concave-convex gasket 30, so that the other side of the concave-convex gasket 30 abuts against the fixed cover 20.

[0031] Specifically, the existing bowl-shaped spring leaf shaft 10 requires a large number of parts, which is relatively expensive for clamshell products with low force requirements. Therefore, the present invention proposes a disc-type friction shaft 10, which is typically used in components that must withstand torque during rotation. It has a simple structure, is quick to manufacture and assemble, requires a small number of parts, and is relatively cost-effective. It is particularly suitable for rotating components with small size and low force requirements.

[0032] Secondly, the structure of the composite shaft 10 primarily utilizes a stopper plate in combination with a fixed cover 20 to control the locking angle of the shaft 10. The concave-convex gasket 30 generates deformation to create axial torque, allowing the shaft 10 to hover at any angle. Therefore, during rotation, the corresponding rotating component can be hovered and locked at any angle, facilitating user use and extending the lifespan of the shaft 10.

[0033] Furthermore, the tightening nut 70 compresses the concave-convex gasket 30, causing a corresponding deformation, which in turn generates a corresponding axial stress. As the shaft 10 rotates, the stop plate 40 and the first gasket 50 engage the concave-convex gasket 30, generating a corresponding rotational resistance, allowing the shaft 10 to hover at any angle. The magnitude of the rotational resistance can be adjusted by tightening the tightening nut 70. This is equivalent to adjusting the deformation and compression of the concave-convex gasket 30 to adjust the corresponding rotational resistance.

[0034] In addition, in order to increase the service life of the shaft 10, the shaft 10 may be subjected to a corresponding service life test, such as a wear test: after 10,000 continuous rotations at an average speed of 40 times per minute, if the torque fatigue rate is ≤10%, the shaft 10 is considered qualified.

[0035] The specific principle of the rotating shaft 10 of the present invention is that the tightening pressure of the fastening nut 70 causes the concave-convex gasket 30 to deform to a certain extent. The stress generated by the deformation of the concave-convex gasket 30 abuts against the fixed cover 20, thereby generating a certain amount of frictional resistance. This frictional resistance generates a corresponding torsional force that prevents the rotating shaft 10 from rotating during rotation, thereby allowing the rotating shaft 10 to maintain a suspended state after the external driving force is removed.

[0036] like Figure 3 and Figure 4 As shown, preferably, the edge of the concave-convex gasket 30 is provided with a deformation end 31 that is raised to a certain height and bent at a certain angle. The deformation end 31 can be deformed to a certain extent under the tightening pressure of the fastening nut 70, thereby generating corresponding deformation stress.

[0037] Specifically, the fastening nut 70 is connected by a thread, which can not only fix the nut itself on the shaft 11, but also exert a certain pressure on the concave-convex gasket 30, causing the deformation end 31 of the concave-convex gasket 30 to undergo a certain deformation, thereby exerting a certain pressure on the fixed cover 20, causing the rotation between the fixed cover 20 and the rotating shaft 10 to be subject to a certain resistance, thereby allowing the rotating shaft 10 to remain in a suspended state after the rotation is completed.

[0038] like Figure 1 、 Figure 2 and Figure 4 As shown, preferably, the rotating shaft 10 further includes a stop plate 40, which is sleeved on the shaft 11 and rotates synchronously with the shaft 11. The outer periphery of the stop plate 40 is provided with an annular notch 41, thereby forming a first stop position 42 and a second stop position 43 at both ends of the annular notch 41. The fixed cover 20 is provided with a stop protrusion 21 at a position corresponding to the annular notch 41. The stop protrusion 21 blocks the first stop position 42 or the second stop position 43 when the rotating shaft 10 rotates. The stop plate 40 is disposed between the concave-convex gasket 30 and the fixed cover 20.

[0039] Specifically, although the concave-convex gasket 30 can keep the rotating shaft 10 in a hovering state at any angle, in some specific usage scenarios, it is still necessary to limit the rotation angle of the rotating shaft 10 so that it can be blocked at certain angles. Therefore, a stop plate 40 can be set, and the stop position on the stop plate 40 can be used to abut the stop protrusion 21 of the fixed cover 20, so that the stop protrusion 21 can prevent the stop plate 40 from continuing to rotate, which is equivalent to locking the rotation angle of the rotating shaft 10 at a certain angle.

[0040] Secondly, the length of the annular notch 41 of the stopper plate 40 can be modified accordingly according to the needs of the usage scenario, that is, the angle at which the shaft 10 can rotate can be adjusted by the length of the annular notch 41. This angle can be arbitrarily set according to needs.

[0041] like Figure 2 and Figure 4 As shown, preferably, it further includes a first gasket 50, which is sleeved on the shaft 11 and rotates synchronously with the shaft 11, and is arranged between the fastening nut 70 and the concave-convex gasket 30. It also includes a second gasket 60, which is sleeved on the shaft 11 and rotates synchronously with the shaft 11, and is arranged between the fixing cover 20 and the rotating shaft 10.

[0042] Specifically, to reduce the friction between the concave-convex washer 30 and the fastening nut 70, a first washer 50 may be disposed between the concave-convex washer 30 and the fastening nut 70. The first washer 50 is preferably made of a material with a low friction coefficient and relatively wear-resistant. Accordingly, a second washer 60 may be disposed between the fixed cover 20 and the rotating shaft 10. The second washer 60 is preferably made of a material with a low friction coefficient and relatively wear-resistant.

[0043] like Figure 2 and Figure 4 As shown, preferably, the end of the rotating shaft 10 away from the shaft 11 is further provided with a first mounting hole 12, and the first mounting hole 12 is used to mount the rotating shaft 10 on an external rotating component. The fixing cover 20 is further provided with a second mounting hole 22, and the second mounting hole 22 is used to mount the fixing cover 20 on an external fixed component.

[0044] Specifically, for easy installation, corresponding first mounting holes 12 and second mounting holes 22 can be provided to mount and fix the rotating shaft 10 or the fixing cover 20. Specific mounting and fixing methods can adopt threaded connection, key connection and other connection methods in the prior art, which will not be described in detail here.

[0045] like Figure 4As shown, preferably, the shaft 11 is provided with a square portion 13, and the stop plate 40, the first gasket 50 and the second gasket 60 are respectively provided with square holes, so that they are sleeved on the square portion 13 of the shaft 11 through the square holes, thereby forming a connection structure that rotates synchronously with the shaft 11.

[0046] Specifically, in order to make the stop plate 40, the first gasket 50 and the second gasket 60 rotate synchronously with the rotating shaft 10, it is preferred to set corresponding square holes so that they can cooperate with the square portion 13 of the shaft 11 to achieve synchronous rotation effect.

[0047] Furthermore, the stopper plate 40, first gasket 50, second gasket 60, and fixed cover 20 are required to have relatively high hardness and wear resistance and can therefore be made of SK5 steel. SK5 is a carbon tool steel that conforms to the JIS G4401 standard and exhibits high hardness and wear resistance after quenching and tempering. Furthermore, since the coefficient of friction on the surface needs to be minimized, the surfaces can be ground and then plated with chemical nickel after heat treatment.

[0048] The concave-convex gasket 30 needs to maintain a certain elasticity and generate a certain friction resistance, so it can also be made of SK5 steel, and only needs to be heat treated, without the need for grinding and nickel plating.

[0049] The fastening nut 70 is preferably a nut product with an anti-falling function among existing products to prevent the nut from falling off during the rotation of the shaft 10.

[0050] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced within the present invention.

Claims

1. A disc-type friction shaft, characterized in that: The invention comprises a rotating shaft (10) and a fixed cover (20) which are rotatably connected to each other, wherein one end of the rotating shaft (10) is provided with a shaft rod (11), and the fixed cover (20) is provided with a through hole and is sleeved on the shaft rod (11), thereby forming a rotating connection; and further comprises a concave-convex gasket (30) and a fastening nut (70), wherein the concave-convex gasket (30) is sleeved on the shaft rod (11), and one end of the shaft rod (11) away from the rotating shaft (10) is threadedly connected to the fastening nut (70), so that the fastening nut (70) forms a certain fastening pressure on one side of the concave-convex gasket (30), thereby causing the other side of the concave-convex gasket (30) to abut against the fixed cover (20).

2. The disc-type friction shaft according to claim 1, characterized in that: The edge of the concave-convex gasket (30) is provided with a deformable end (31) that is raised to a certain height and bent at a certain angle. The deformable end (31) can be deformed to a certain extent under the tightening pressure of the tightening nut (70), thereby generating corresponding deformation stress.

3. The disc-type friction shaft according to claim 1, characterized in that: The invention also includes a stop plate (40), wherein the stop plate (40) is sleeved on the shaft (11) and rotates synchronously with the shaft (11), and an annular notch (41) is provided on the outer periphery of the stop plate (40), thereby forming a first stop position (42) and a second stop position (43) at both ends of the annular notch (41), respectively; the fixed cover (20) is provided with a stop protrusion (21) at a position corresponding to the annular notch (41), and the stop protrusion (21) blocks the first stop position (42) or the second stop position (43) when the rotating shaft (10) rotates.

4. The disc-type friction shaft according to claim 3, characterized in that: The stop plate (40) is arranged between the concave-convex gasket (30) and the fixed cover (20).

5. The disc-type friction shaft according to claim 1, characterized in that: It also includes a first gasket (50), which is sleeved on the shaft (11) and rotates synchronously with the shaft (11), and is arranged between the fastening nut (70) and the concave-convex gasket (30).

6. The disc-type friction shaft according to claim 1, characterized in that: It also includes a second gasket (60), which is sleeved on the shaft (11) and rotates synchronously with the shaft (11), and is arranged between the fixed cover (20) and the rotating shaft (10).

7. The disc-type friction shaft according to claim 1, characterized in that: A first mounting hole (12) is further provided at one end of the rotating shaft (10) away from the shaft rod (11), and the first mounting hole (12) is used to mount the rotating shaft (10) on an external rotating component.

8. The disc-type friction shaft according to claim 1, characterized in that: The fixing cover (20) is further provided with a second mounting hole (22), and the second mounting hole (22) is used to mount the fixing cover (20) on an external fixing component.

9. A disc-type friction shaft according to any one of claims 1 to 8, characterized in that: The shaft (11) is provided with a square portion (13), and the stop plate (40), the first gasket (50) and the second gasket (60) are respectively provided with square holes, so that they are sleeved on the square portion (13) of the shaft (11) through the square holes, thereby forming a connection structure that rotates synchronously with the shaft (11).

Images