Stepless hovering rotating shaft based on rubber pad friction pair

Abstract

The invention provides a stepless hovering rotating shaft based on a rubber pad friction pair, and relates to the field of machinery. The stepless hovering rotating shaft based on the rubber pad friction pair comprises a front support, a rear support, a rubber pad, a bolt, a gasket, a disc spring and a nut, the front support, the rear support, the rubber pad, the bolt, the gasket, the disc spring and the nut are fastened through the nut, the bolt sequentially penetrates through the front support, the rubber pad and the rear support, the front support is installed in a first shell, and the rear support is installed in a second shell. According to the stepless hovering rotating shaft based on the rubber pad friction pair, through the design of the rubber pad friction pair, direct contact of metal is avoided, abrasion and stick-slip phenomena are reduced, and stable and smooth damping torque is provided; stepless hovering in the true sense is achieved, and the position can be stably kept at any angle. The structure is simple, cost is low, and production and maintenance are easy; the environment adaptability is good, and the vibration resistance and the impact resistance are excellent; the service life of the product can be prolonged by replacing the rubber pad, and maintenance cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of mechanical technology, specifically to a continuously hovering rotating shaft based on a rubber pad friction pair. Background Technology

[0002] In fields such as industrial automation, medical imaging, and film and television production, rack-mounted monitors require frequent angle adjustments to meet different viewing angle requirements. Traditional fixed installations cannot meet this need, while early bolt-fastened hinges suffered from cumbersome adjustments, poor stability, and easy wear.

[0003] Existing rotating mechanisms mostly rely on metal friction, gear preload, or plastic damping to maintain position, but they have obvious drawbacks: direct metal contact is prone to stick-slip, resulting in an unsmooth adjustment feel, and they are also prone to displacement due to vibration; gear or hydraulic damping structures have excellent performance, but they are expensive and difficult to adapt to the space constraints of rack installation.

[0004] While some technologies have attempted to improve stability through plastic pads and adjusting bolts, such as the bolt-nut adjustment structure in camera stabilizers, the balance between stepless hovering, smooth operation, and long-term reliability remains unresolved. Furthermore, purely mechanical hinges lack effective wear compensation mechanisms, resulting in limited lifespan. Therefore, there is a need to develop a mechanical hinge that is simple in structure, easy to adjust, and can provide stable damping torque. Summary of the Invention

[0005] The purpose of this invention is to provide a continuously variable hovering pivot based on a rubber pad friction pair, which solves the problems mentioned in the background art.

[0006] Technical solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a continuously variable hovering pivot based on a rubber pad friction pair, comprising a front bracket, a rear bracket, a rubber pad, a bolt, a washer, a disc spring, and a nut, which are fastened together by the nut. The bolt passes through the front bracket, the rubber pad, and the rear bracket in sequence. The front bracket is installed inside a first outer casing, and the rear bracket is installed inside a second outer casing. The rubber pad serves as a friction medium and is located between the front and rear brackets. The disc spring and washer are sleeved on the bolt and are located between the nut and the rear bracket. A third outer casing is provided on the right side of the rear bracket.

[0008] Furthermore, the rubber pad is made of a special rubber material with a high coefficient of friction, and its elastic deformation can compensate for errors in the machining and assembly of the parts.

[0009] Furthermore, the disc spring provides linear preload, and through its cooperation with the rubber pad, it enables precise adjustment of the damping torque.

[0010] Furthermore, the rubber pad is a replaceable independent component that can be replaced individually after wear.

[0011] Furthermore, by adjusting the rubber hardness, stacking multiple layers of rubber pads, or adjusting the nut preload, it is possible to adapt to different weight load requirements.

[0012] This invention provides a continuously variable hovering pivot based on a rubber pad friction pair. It has the following beneficial effects:

[0013] This stepless hovering pivot, based on a rubber pad friction pair, avoids direct metal-to-metal contact, reducing wear and stick-slip phenomena, and providing stable and smooth damping torque. It achieves true stepless hovering, maintaining a stable position at any angle. It has a simple structure, low cost, and is easy to manufacture and maintain. It has good environmental adaptability and excellent vibration and shock resistance. The product life can be extended and maintenance costs reduced by replacing the rubber pads. Attached Figure Description

[0014] Figure 1 This is a cross-sectional schematic diagram of the present invention;

[0015] Figure 2 This is a perspective view of the present invention;

[0016] Figure 3 This is an exploded view of the present invention.

[0017] Among them, 1 is the front bracket, 2 is the rear bracket, 3 is the rubber pad, 4 is the bolt, 5 is the washer, 6 is the disc spring, 7 is the nut, 8 is the No. 1 outer shell, 9 is the No. 2 outer shell, and 10 is the No. 3 outer shell. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0020] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0021] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] like Figure 1-3 As shown, this embodiment of the invention provides a continuously variable hovering pivot based on a rubber pad friction pair, including a front bracket 1, a rear bracket 2, a rubber pad 3, a bolt 4, a washer 5, a disc spring 6, and a nut 7, which are fastened together by the nut 7. The rubber pad 3 is made of a special rubber material with a high coefficient of friction, and its elastic deformation can compensate for the machining and assembly errors of the parts. The disc spring 6 provides linear preload and achieves precise adjustment of damping torque through cooperation with the rubber pad 3. The rubber pad 3 is a replaceable independent component and can be replaced separately after wear. By adjusting the rubber hardness, stacking multiple layers of rubber pads 3, or adjusting the preload of the nut 7, it can be adapted to different weight load requirements. The bolt 4 passes through the front bracket 1, the rubber pad 3, and the rear bracket 2 in sequence. The front bracket 1 is installed inside the first outer shell 8, and the rear bracket 2 is installed inside the second outer shell 9. The rubber pad 3 serves as a friction medium and is located between the front bracket 1 and the rear bracket 2. The disc spring 6 and the washer 5 are sleeved on the bolt 4 and are located between the nut 7 and the rear bracket 2. The third outer shell 10 is provided on the right side of the rear bracket 2.

[0023] During assembly, bolt 4 passes through the front bracket 1, rubber pad 3, and rear bracket 2 in sequence. Then, disc spring 6 and washer 5 are successively fitted onto the ends of the bolts, and finally, nut 7 is tightened. By adjusting the tightness of nut 7, the pressure of disc spring 6 on rear bracket 2 can be adjusted, thereby changing the compression of rubber pad 3 and realizing the adjustment of damping torque. When the angle needs to be adjusted, the user applies external force to make the two brackets rotate relative to each other. Sliding friction is generated between rubber pad 3 and the contact surfaces of the front and rear brackets. Due to the high coefficient of friction and elastic properties of rubber material, a smooth damping torque is provided.

[0024] The rubber pad 3 is made of special rubber material, which has a high and stable coefficient of friction and good elastic recovery performance. The disc spring 6 provides linear preload to ensure uniform pressure distribution. When the rubber pad 3 is worn, simply loosen the nut 7 and replace it with a new rubber pad to continue using it without replacing the entire rotating shaft mechanism.

[0025] By selecting rubber pads 3 of different hardness or stacking multiple rubber pads 3, the load requirements of equipment of different weights can be adapted.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A continuously variable hovering pivot based on a rubber pad friction pair, comprising a front bracket (1), a rear bracket (2), a rubber pad (3), a bolt (4), a washer (5), a disc spring (6), and a nut (7), and fastened by the nut (7), characterized in that: The bolt (4) passes through the front bracket (1), the rubber pad (3) and the rear bracket (2) in sequence. The front bracket (1) is installed inside the first outer shell (8). The rear bracket (2) is installed inside the second outer shell (9). The rubber pad (3) serves as a friction medium between the front bracket (1) and the rear bracket (2). The disc spring (6) and the washer (5) are sleeved on the bolt (4) and located between the nut (7) and the rear bracket (2). The third outer shell (10) is provided on the right side of the rear bracket (2).

2. The stepless hovering pivot based on a rubber pad friction pair according to claim 1, characterized in that: The rubber pad (3) is made of a special rubber material with a high coefficient of friction, and its elastic deformation can compensate for the processing and assembly errors of the parts.

3. The stepless hovering pivot based on a rubber pad friction pair according to claim 1, characterized in that: The disc spring (6) provides linear preload and achieves precise adjustment of damping torque through cooperation with the rubber pad (3).

4. The stepless hovering pivot based on a rubber pad friction pair according to claim 1, characterized in that: The rubber pad (3) is a replaceable independent component that can be replaced separately after wear.

5. The stepless hovering pivot based on a rubber pad friction pair according to claim 1, characterized in that: By adjusting the rubber hardness, stacking multiple layers of rubber pads (3), or adjusting the preload of the nut (7), it is possible to adapt to different weight load requirements.

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