Hinge damping steel shaft

Abstract

The utility model relates to the technical field of hardware, in particular to a hinge damping steel shaft which comprises a steel shaft body, a shaft sleeve and a damping piece, the steel shaft body comprises a hinge portion and a rotating shaft portion extending outwards, the rotating shaft portion and the hinge portion are of a split structure, the shaft sleeve is rotatably connected to the middle of the rotating shaft portion in a sleeved mode, and the damping piece is arranged in the shaft sleeve. A threaded connection hole is formed in one end of the hinge part, a first thread matched with the threaded connection hole is arranged at the end, close to the threaded connection hole, of the rotating shaft part, the rotating shaft part is in threaded connection with the threaded connection hole through the first thread, a receding notch is formed in the surface of the hinge part, and the receding notch and the threaded connection hole are of a communicated structure. According to the damping steel shaft, the gap between the damping pieces in the shaft sleeve can be adjusted, the friction force of the damping pieces can be increased or decreased, the rotatable position of the rotating shaft part is located on the outer side of the hinge part, and the effect that the damping force of the damping steel shaft is adjusted after a product is assembled can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of hardware technology, specifically to a hinge damping steel shaft. Background Technology

[0002] A damping steel shaft is an essential component for connecting main parts of a product. It is used during rotation and withstands both bending and torque. Damping steel shafts are commonly used in mobile phones, flip or rotating screen phones, laptop LEDs, desk lamps, car mounts, and more.

[0003] According to the existing Chinese utility model patent with publication number CN220816248U, a rotating shaft is described. The structure includes a rotating shaft body, a mounting bushing, and a rotating shaft connector. The rotating shaft connector passes through the rotating shaft body. The mounting bushing is located on the outside of the rotating shaft connector. The rotating shaft connector includes a damping element, a spring plate assembly connected to one side of the damping element, and a nut. The damping element is connected to the rotating shaft body, the spring plate assembly is connected to the rotating shaft body, and the nut is locked to one end of the rotating shaft body. The nut is used to adjust the butterfly spring plate on the rotating shaft body and apply pressure to the butterfly spring plate to adjust the damping force between the rotating shaft body and the mounting bushing.

[0004] Because the nut lock is located at the inner end of the damping steel shaft, the damping force of the damping steel shaft cannot be adjusted after the product is assembled. Therefore, in view of these circumstances, there is an urgent need to develop a hinge damping steel shaft to meet the needs of actual use. Summary of the Invention

[0005] The purpose of this invention is to provide a hinge damping steel shaft to solve the defect that the damping force of the existing damping steel shaft cannot be adjusted after the product is assembled.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A hinge damping steel shaft includes a steel shaft body, a bushing, and a damping element. The steel shaft body includes a hinge portion and an outwardly extending shaft portion. The shaft portion and the hinge portion are separate structures. The bushing is rotatably fitted onto the middle of the shaft portion, and the damping element is disposed inside the bushing. One end of the hinge portion has a threaded hole, and the end of the shaft portion near the threaded hole has a first thread that matches the threaded hole. The shaft portion is threaded into the threaded hole through the first thread. The surface of the hinge portion has a clearance notch, and the clearance notch and the threaded hole are in a conductive structure.

[0008] As a further embodiment of the above description, the end of the rotating shaft near the screw hole is provided with several rotating grooves. The axial direction of the rotating grooves is parallel to the axial direction of the rotating shaft, and the rotating grooves are located inside the clearance notch.

[0009] As a further embodiment of the above description, the end of the pivot shaft away from the hinge is provided with a connector. The connector is composed of a nut. The end of the pivot shaft near the nut is provided with a second thread. The pivot shaft is screwed to the connector through the second thread. The connector is used to fix the bushing located between the hinge and the connector.

[0010] As a further embodiment of the above description, an inner cavity is formed in the middle of the bushing, with the opening of the inner cavity facing away from the hinge portion, and a damping element is disposed inside the inner cavity of the bushing.

[0011] As a further embodiment of the above description, the damping component includes a first gasket assembly and a second gasket assembly. The first gasket assembly consists of several first washers and several second washers. Both the first and second washers are annular hollow structures. The first and second washers are interleaved and sleeved on the middle of the rotating shaft.

[0012] As a further embodiment of the above description, a limiting groove is formed on the surface of the bushing. The limiting groove is a long strip structure. The groove direction of the limiting groove is parallel to the axial direction of the rotating shaft. A limiting tab protrudes outward at the edge of the second washer. The limiting tab is embedded in the inside of the limiting groove, and the second washer forms a limiting structure with the bushing through the limiting tab.

[0013] As a further embodiment of the above description, the second gasket assembly is composed of several sheet third washers, each of which has a ring-shaped hollow structure. The several sheet third washers are arranged in a linear array and fitted onto the middle of the rotating shaft.

[0014] The beneficial effects of this utility model are as follows:

[0015] This application discloses a hinge damping steel shaft, which features a separate structure between the shaft portion and the hinge portion. The screw holes of the shaft portion and the hinge portion are rotatably connected. By rotating the shaft portion, the distance between the shaft portion and the hinge portion can be adjusted, thereby adjusting the clearance between the damping components within the bushing, increasing or decreasing the friction. Furthermore, the rotatable position of the shaft portion is located outside the hinge portion, allowing for adjustment of the damping force of the damping steel shaft after the product is assembled. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a hinge damping steel shaft according to the present invention;

[0017] Figure 2This is an exploded view of the structure of the hinge damping steel shaft described in this utility model;

[0018] Figure 3 This is a schematic diagram of the hinge portion in a hinge damping steel shaft according to the present invention;

[0019] Figure 4 This is a cross-sectional structural schematic diagram of a hinge damping steel shaft according to the present invention;

[0020] In the figure: 1-Hinge part, 11-Screw hole, 12-Clearing notch, 2-Rotating shaft part, 21-First thread, 22-Rotating groove, 23-Second thread, 3-Busket, 31-Inner cavity, 32-Limiting groove, 4-First gasket assembly, 41-First washer, 42-Second washer, 421-Limiting protrusion, 5-Second gasket assembly, 6-Connector. Detailed Implementation

[0021] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention. The present invention will be described in detail below with reference to the accompanying drawings.

[0022] Please see Figure 1-4 The specific implementation of the hinge damping steel shaft includes a steel shaft body, a bushing 3, and a damping element. The steel shaft body includes a hinge portion 1 and an outwardly extending rotating shaft portion 2. The rotating shaft portion 2 and the hinge portion 1 are separate structures. The bushing 3 is rotatably fitted into the middle of the rotating shaft portion 2, and the damping element is disposed inside the bushing 3. One end of the hinge portion 1 is provided with a screw hole 11. The end of the rotating shaft portion 2 near the screw hole 11 is provided with a first thread 21 that matches the screw hole 11. The rotating shaft portion 2 is screwed into the screw hole 11 through the first thread 21. The surface of the hinge portion 1 is provided with a clearance notch 12. The clearance notch 12 and the screw hole 11 are in a conductive structure. The end of the rotating shaft portion 2 near the screw hole 11 is provided with several rotating grooves 22. The axial direction of the rotating grooves 22 is parallel to the axial direction of the rotating shaft portion 2, and the rotating grooves 22 are located inside the clearance notch 12.

[0023] The rotating shaft 2 and the hinge 1 are designed as separate structures. The screw holes 11 of the rotating shaft 2 and the hinge 1 are rotatable screw connections. By rotating the rotating shaft 2, the distance between the rotating shaft 2 and the hinge 1 can be adjusted, so that the gap between the damping components in the bushing 3 can be adjusted, increasing or decreasing the friction. The rotating shaft 2 is located on the outside of the hinge 1, which allows the damping force of the damping steel shaft to be adjusted after the product is assembled.

[0024] Specifically, such as Figure 2 and Figure 4As shown, the end of the pivot 2 away from the hinge 1 is also provided with a connector 6. The connector 6 is composed of a nut. The end of the pivot 2 near the nut is provided with a second thread 23. The pivot 2 is screwed to the connector 6 through the second thread 23. The connector 6 is used to fix the bushing 3 located between the hinge 1 and the connector 6.

[0025] Specifically, such as Figure 2 and Figure 4 As shown, a cavity 31 is formed in the middle of the bushing 3. The opening of the cavity 31 is located away from the hinge portion 1. A damping element is disposed in the cavity 31 of the bushing 3. The damping element includes a first washer assembly 4 and a second washer assembly 5. The first washer assembly 4 is composed of several first washers 41 and several second washers 42. Both the first washers 41 and the second washers 42 are annular hollow structures. The first washers 41 and the second washers 42 are staggered and sleeved in the middle of the rotating shaft portion 2. A limiting groove 32 is formed on the surface of the bushing 3. The limiting groove 32 is a long strip structure. The groove direction of the limiting groove 32 is parallel to the axial direction of the rotating shaft portion 2. A limiting protrusion 421 is provided at the edge of the second washer 42. The limiting protrusion 421 is embedded in the limiting groove 32, and the second washer 42 forms a limiting structure with the bushing 3 through the limiting protrusion 421.

[0026] Specifically, such as Figure 2 As shown, the second gasket assembly 5 is composed of several sheet third washers. The third washers have an annular hollow structure, and the several sheet third washers are arranged in a linear array and fitted into the middle of the rotating shaft part 2.

[0027] An installation process for a hinge damping steel shaft: The first thread 21 of the shaft part 2 is screwed into the screw hole 11 of the hinge part 1, so that the shaft part 2 and the hinge part 1 are assembled. Then, the first washer 41 and the second washer 42 are staggered and fitted onto the middle of the shaft part 2. Then, a number of third washers in a linear array are fitted onto the middle of the shaft part 2. Finally, the connector 6, which is made of nuts, is screwed and fixed to the second thread 23 of the shaft part 2, thus completing the installation of a hinge damping steel shaft.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A hinge damping steel shaft, comprising a steel shaft body, a bushing, and a damping element, characterized in that: The steel shaft body includes a hinge portion and an outwardly extending shaft portion. The shaft portion and the hinge portion are separate structures. A bushing is rotatably fitted onto the middle of the shaft portion, and a damping element is disposed inside the bushing. One end of the hinge portion has a threaded hole, and the end of the shaft portion near the threaded hole has a first thread that matches the threaded hole. The shaft portion is threaded into the threaded hole through the first thread. The surface of the hinge portion has a clearance notch, and the clearance notch and the threaded hole are in a conductive structure.

2. The hinge damping steel shaft according to claim 1, characterized in that: The rotating shaft has several rotating grooves at one end near the screw hole. The axial direction of the rotating grooves is parallel to the axial direction of the rotating shaft, and the rotating grooves are located inside the clearance notch.

3. The hinge damping steel shaft according to claim 1, characterized in that: The end of the pivot part away from the hinge part is also provided with a connector. The connector is composed of a nut. The end of the pivot part near the nut is provided with a second thread. The pivot part is screwed to the connector through the second thread. The connector is used to fix the bushing located between the hinge part and the connector.

4. A hinge damping steel shaft according to claim 1, characterized in that: The bushing has an inner cavity in the middle, with the opening of the inner cavity facing away from the hinge. The damping element is disposed in the inner cavity of the bushing.

5. A hinge damping steel shaft according to claim 4, characterized in that: The damping component includes a first gasket assembly and a second gasket assembly. The first gasket assembly consists of several first washers and several second washers. Both the first and second washers are annular hollow structures. The first and second washers are interleaved and sleeved on the middle of the rotating shaft.

6. A hinge damping steel shaft according to claim 5, characterized in that: A limiting groove is formed on the surface of the bushing. The limiting groove is a long strip structure. The groove direction of the limiting groove is parallel to the axial direction of the rotating shaft. A limiting tab is provided at the edge of the second washer. The limiting tab is embedded in the inside of the limiting groove, and the second washer forms a limiting structure with the bushing through the limiting tab.

7. A hinge damping steel shaft according to claim 5, characterized in that: The second gasket assembly consists of several sheet third washers, each of which is a hollow annular structure. The several sheet third washers are arranged in a linear array and fitted onto the middle of the rotating shaft.

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