Hydraulic hinge bearing

Abstract

The utility model relates to bearing technical field discloses a kind of hydraulic hinge bearings, including outer ring, the outer ring inner wall is provided with protection assembly;The protection assembly includes outer pad layer, and the outer pad layer outer wall is fixedly connected in outer ring inner wall, and the outer pad layer inner wall is fixedly connected with outer graphite ring, and the outer graphite ring inside is provided with outer rolling clamping groove, and the outer ring inside is provided with inner ring, and the inner ring inner wall is fixedly connected with inner pad layer, and the inner pad layer inner wall is fixedly connected with inner graphite ring, and the inner ring is provided with inner rolling clamping groove, and the inner graphite ring inside is provided with clamping groove one.The utility model, first, inner ring is set to mandrel, when bearing works, outer graphite ring directly contacted with rolling body surface being set in outer ring, in the long-term working process of bearing, outer graphite ring enhances the wear resistance of rolling body, slows down the wear degree of rolling body surface, and inner graphite ring directly contacted with mandrel being set in inner ring.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, and in particular to a hydraulic hinge bearing. Background Technology

[0002] Hydraulic hinge bearings, as core components for achieving smooth hinge rotation and damping control, are widely used in furniture, doors and windows, office equipment, and industrial automation equipment. Their performance directly determines the hinge's service life, smoothness of rotation, and overall user experience. In practical applications, hydraulic hinge bearings must withstand axial and radial forces during the hinge's opening and closing process for extended periods. They also need to work in conjunction with hydraulic damping systems to achieve functions such as slow closing and impact buffering. Therefore, the durability and ease of maintenance of the internal rolling components of the bearing become key performance indicators, especially in high-frequency use scenarios where the requirements for the wear resistance of the rolling elements and subsequent maintenance costs are even more stringent.

[0003] Currently, existing hydraulic hinge bearings typically employ a basic structure of "outer ring-inner ring-rolling elements." The outer and inner rings are often forged metal parts, with multiple cylindrical or spherical metal rolling elements evenly distributed between them. Some structures use metal cages to separate and position the rolling elements, preventing them from rubbing against each other. The technical principle is to utilize the rolling motion of the rolling elements between the grooves on the inner and outer walls of the inner ring, converting the sliding friction during hinge opening and closing into rolling friction, thereby reducing the resistance during hinge rotation and achieving smooth opening and closing.

[0004] However, in the long-term use of existing hydraulic hinge bearings, the contact parts between the rolling elements and the outer and inner ring grooves are all made of metal. The direct rolling contact between the metals leads to wear problems, which gradually become apparent. Especially in scenarios with high-frequency opening and closing or heavy loads, the surface of the rolling elements is prone to scratches, dents, and other wear phenomena due to continuous friction. As the wear intensifies, the smoothness of the hinge rotation will decrease significantly, and even jamming may occur. At this time, it is necessary to replace the worn rolling elements. In addition, the long-term friction between the inner ring and the hinge spindle will cause wear on the spindle and the rolling elements. If the wear is severe, the bearing needs to be disassembled to replace the rolling elements. This not only requires professional tools and operating experience, but may also cause accidental damage to other components during disassembly, which significantly increases the difficulty of equipment maintenance. At the same time, maintenance time and costs also increase accordingly, seriously affecting the continuity of the overall operation of the hydraulic hinge bearing. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a hydraulic hinge bearing, which aims to improve the problem in the prior art where the rolling elements are prone to wear after long-term use due to direct contact between the rolling elements and the outer ring made of metal, as well as between the inner ring and the spindle, resulting in a short service life of the rolling elements.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic hinge bearing, including an outer ring, wherein a protective component is provided on the inner wall of the outer ring;

[0007] The protective component includes an outer pad, the outer wall of which is fixedly connected to the inner wall of an outer ring, an outer graphite ring fixedly connected to the inner wall of the outer pad, an outer rolling groove formed inside the outer graphite ring, an inner ring inside the outer ring, an inner pad fixedly connected to the inner wall of the inner ring, an inner graphite ring fixedly connected to the inner wall of the inner pad, an inner rolling groove formed inside the inner graphite ring, and a groove formed inside the inner graphite ring.

[0008] Furthermore, a second slot is provided inside the inner graphite ring, and a butterfly spring is slidably connected to the outer wall of the inner graphite ring, with the outer wall of the butterfly spring slidably connected to the inner wall of the second slot.

[0009] Furthermore, a plurality of rolling elements are provided between the outer ring and the inner ring.

[0010] Furthermore, multiple protective rings are slidably connected to the outer walls of the multiple rolling bodies.

[0011] Furthermore, the outer walls of the plurality of rolling bodies are slidably connected to the inner wall of the outer rolling groove.

[0012] Furthermore, one end of the butterfly spring is fixedly connected to the inner wall of the slot.

[0013] Furthermore, multiple connecting pieces are fixedly connected to both ends of each of the multiple protective rings.

[0014] Furthermore, the outer walls of the plurality of rolling elements are slidably connected to the inner wall of the inner ring.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, the inner ring is first fitted onto the mandrel. When the bearing is working, the outer graphite ring on the outer ring directly contacts the surface of the rolling element. During the long-term operation of the bearing, the outer graphite ring enhances the wear resistance of the rolling element and slows down the wear on the surface of the rolling element. The inner graphite ring on the inner ring directly contacts the mandrel, reducing the wear on the mandrel. This achieves the effect of extending the service life of the rolling element and the mandrel, avoiding the complex disassembly problem faced when replacement is required after severe surface wear due to long-term use, reducing the difficulty and cost of equipment maintenance, and ensuring the continuity of the overall operation of the hydraulic hinge bearing.

[0017] 2. In this utility model, when the inner ring is inserted into the mandrel, the butterfly spring on the inner graphite ring will be compressed and deformed, thereby continuously outputting a constant axial force. This axial force is then directly applied to the inner graphite ring, effectively eliminating the clearance between the inner graphite ring and the mandrel. This prevents the inner graphite ring and the mandrel from shifting positions due to the clearance during relative movement. Consequently, during the opening and closing of the hinge, the slight vibration caused by the clearance is reduced, while suppressing abnormal noises generated by the vibration, thus improving the quietness and stability of the hinge during use. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a hydraulic hinge bearing proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the protective ring structure of a hydraulic hinge bearing proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the outer ring structure of a hydraulic hinge bearing proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the inner ring structure of a hydraulic hinge bearing proposed in this utility model;

[0022] Figure 5 for Figure 4 Enlarged view of point A in the image.

[0023] Legend:

[0024] 1. Outer ring; 2. Inner ring; 3. Rolling element; 4. Protective ring; 5. Outer rolling groove; 6. Inner rolling groove; 7. Outer pad; 8. Outer graphite ring; 9. Inner pad; 10. Inner graphite ring; 11. Groove one; 12. Disc spring; 13. Groove two; 14. Connecting piece. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figures 1-5 One embodiment of this utility model is a hydraulic hinge bearing, including an outer ring 1, and a protective component is provided on the inner wall of the outer ring 1.

[0027] The protective component includes an outer pad 7 with a transition connection structure. The outer wall of the outer pad 7 is fixedly connected to the inner wall of the outer ring 1. An outer graphite ring 8 that slows down wear is fixedly connected to the inner wall of the outer pad 7. An outer rolling groove 5 is opened inside the outer graphite ring 8. An inner ring 2 is set inside the outer ring 1. An inner pad 9 is fixedly connected to the inner wall of the inner ring 2. An inner graphite ring 10 is fixedly connected to the inner wall of the inner pad 9. The graphite material of the inner graphite ring 10 has a certain degree of lubricity, which can reduce friction with the spindle and prevent wear of the spindle after long-term use. An inner rolling groove 6 is opened in the inner ring 2. The inner rolling groove 6 corresponds to the outer rolling groove 5 of the outer graphite ring 8 and together they form a complete rolling track of the rolling body 3. A groove 11 is opened inside the inner graphite ring 10 to reduce the friction area between the inner graphite ring 10 and the spindle.

[0028] Specifically, the outer ring 1 and the inner ring 2 form the basic structure, the outer pad 7 and the inner pad 9 serve as a transition layer, the outer graphite ring 8 reduces the wear of the rolling element 3, and forms the track of the rolling element 3 with the inner rolling groove 6 of the inner ring 2. The inner graphite ring 10 uses lubrication to reduce friction with the spindle, and the groove 11 reduces the friction area with the spindle during movement, protecting the spindle and reducing wear.

[0029] Reference Figures 1-5 The inner graphite ring 10 has a slot 2 13 inside, and a butterfly spring 12 is slidably connected to the outer wall of the inner graphite ring 10. When the inner ring 2 is pressed in by the mandrel, the pressure of the mandrel on the inner graphite ring 10 is transmitted to the butterfly spring 12, causing it to compress and deform along the slot 2 13. Utilizing the elastic force of the butterfly spring 12 deformation, an axial force is continuously applied to the inner graphite ring 10, eliminating backlash and reducing slight vibrations and abnormal noises during hinge opening and closing. The outer wall of the butterfly spring 12 is slidably connected to the inner wall of the slot 2 13. Multiple rolling elements 3 are arranged between the outer ring 1 and the inner ring 2. During the hinge opening and closing process, the rolling elements 3 can roll along the track formed by the outer rolling slot 5 and the inner rolling slot 6, keeping the outer ring 1 and the inner ring... The relative sliding between 2 is transformed into rolling, which greatly reduces the bearing rotation resistance and improves the smoothness of hinge rotation. Multiple rolling elements 3 have multiple protective rings 4 slidably connected to their outer walls. Multiple rolling elements 3 have multiple outer walls slidably connected to the inner wall of the outer rolling groove 5. One end of the disc spring 12 is fixedly connected to the inner wall of the groove 11 that restricts the movement trajectory. Multiple protective rings 4 have multiple connecting pieces 14 fixedly connected to both ends. The protective rings 4 and the connecting pieces 14 together wrap around part of the outer wall of the rolling element 3, preventing external dust and impurities from entering the contact area between the rolling element 3 and the outer rolling groove 5 and the inner rolling groove 6, avoiding rolling jamming or additional wear caused by impurities. Multiple rolling elements 3 have multiple outer walls slidably connected to the inner wall of the inner ring 2.

[0030] Specifically, when the inner ring 2 is inserted into the mandrel, the butterfly spring 12 on the inner graphite ring 10 squeezes the mandrel and compresses it along the second slot 13. The elastic force accumulated by the butterfly spring 12 provides a continuous axial force to the inner graphite ring 10, eliminating the play between the inner graphite ring 10 and the mandrel, and reducing the slight vibration and abnormal noise when the hinge is opened and closed.

[0031] Working principle: When this device is needed, firstly, the inner ring 2 is fitted onto the spindle to separate the hinge cup. One end of the spindle is fixed to the door body, and the other end is inserted into the hinge housing. The bearing is assembled in the fit gap between the spindle and the housing. When the door body is subjected to force and pushes the spindle to rotate, the spindle will drive the inner ring 2 to rotate. The inner rolling groove 6 of the inner ring 2 generates a driving force on the rolling element 3, causing the rolling element 3 to roll along the outer rolling groove 5, ensuring that the door body can be opened easily. The outer graphite ring 8 and outer pad 7 set on the outer ring 1 can enhance the durability of the rolling element 3 when the bearing is working. The outer graphite ring 8 effectively reduces wear and extends the service life of the rolling element 3, preventing the surface of the rolling element 3 from wearing out and requiring replacement. Secondly, when the inner ring 2 is installed into the mandrel, the butterfly spring 12 on the inner graphite ring 10 will squeeze the mandrel and be compressed along the slot 2 13. The elastic force accumulated by the compressed butterfly spring 12 will provide a continuous and constant axial force acting on the inner graphite ring 10, eliminating the play between the inner graphite ring 10 and the mandrel, reducing the slight vibration and abnormal noise when the hinge is opened and closed, and extending the service life of the hinge.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hydraulic hinge bearing, comprising an outer ring (1), characterized in that: The outer ring (1) has a protective component on its inner wall; The protective component includes an outer pad (7), the outer wall of which is fixedly connected to the inner wall of the outer ring (1), an outer graphite ring (8) is fixedly connected to the inner wall of the outer pad (7), an outer rolling groove (5) is provided inside the outer graphite ring (8), an inner ring (2) is provided inside the outer ring (1), an inner pad (9) is fixedly connected to the inner wall of the inner ring (2), an inner graphite ring (10) is fixedly connected to the inner wall of the inner pad (9), an inner rolling groove (6) is provided inside the inner ring (2), and a groove (11) is provided inside the inner graphite ring (10).

2. A hydraulic hinge bearing according to claim 1, characterized in that: The inner graphite ring (10) has a slot two (13) inside, and a butterfly spring (12) is slidably connected to the outer wall of the inner graphite ring (10). The outer wall of the butterfly spring (12) is slidably connected to the inner wall of the slot two (13).

3. A hydraulic hinge bearing according to claim 1, characterized in that: Multiple rolling elements (3) are provided between the outer ring (1) and the inner ring (2).

4. A hydraulic hinge bearing according to claim 3, characterized in that: Multiple protective rings (4) are slidably connected to the outer walls of the multiple rolling elements (3).

5. A hydraulic hinge bearing according to claim 4, characterized in that: The outer walls of the multiple rolling elements (3) are slidably connected to the inner wall of the outer rolling groove (5).

6. A hydraulic hinge bearing according to claim 2, characterized in that: One end of the butterfly spring (12) is fixedly connected to the inner wall of the slot (11).

7. A hydraulic hinge bearing according to claim 4, characterized in that: Multiple connecting pieces (14) are fixedly connected to both ends of the multiple protective rings (4).

8. A hydraulic hinge bearing according to claim 3, characterized in that: The outer walls of the multiple rolling elements (3) are slidably connected to the inner wall of the inner ring (2).

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