Rotating structure and hinge comprising same

Abstract

Disclosed in the present invention are a rotating structure and a hinge comprising the structure. The rotating structure comprises an upper tube, a middle tube, a lower tube, six spacers, two spring plates, a hinge pin, and a plurality of bearing balls, wherein the upper tube, the middle tube and the lower tube are each provided with a mounting hole on a side surface thereof along its length for assembling a hinge leaf; the spacers are assembled and welded at two ends of each of the upper tube, the middle tube and the lower tube, and a recess is formed at each of the two ends of the middle tube; the upper tube, the middle tube and the lower tube are sequentially arranged on the hinge pin through center holes of the spacers, such that two raceways are respectively formed between the two recesses and the hinge pin; a set of bearing balls is arranged in each of the two raceways; the two spring plates are mounted on the hinge pin and located between the upper tube and the middle tube and between the middle tube and the lower tube, respectively, such that the two spring plates are in contact with the two sets of bearing balls, respectively; and the spacer at the top end of the upper tube and the spacer at the bottom end of the lower tube are both welded and fixed to the hinge pin, such that the upper tube and the lower tube compress the two sets of bearing balls in the raceways by means of the two spring plates respectively. By means of the structure and the hinge comprising the structure, a friction force generated during use can be reduced, wear of the spring plates in use is reduced, and higher requirements for use are met.

Description

A rotating structure and a hinge containing the same Technical Field

[0001] The present invention relates to a hinge and an improvement of its rotating structure. Specifically, the present invention provides a rotating structure suitable for being processed by a welding process to obtain a structure with precision and wear resistance and a hinge containing the structure.

[0002] Traditional hinges generally include a main piece and a secondary piece made of metal. Usually, the main piece and the secondary piece are curled with an upper tube, a lower tube and a middle tube respectively, and a core is used to pass through the upper tube, the middle tube and the lower tube to connect and assemble them together, so that the secondary piece can rotate relative to the main piece.

[0003] This type of hinge has a low manufacturing precision, and a large gap must be maintained between the tube and the core to ensure smooth rotation. However, the large gap between the tube and the core can easily cause the door leaf to tilt, resulting in greater friction and noise during use. In addition, the weight of the door leaf also acts on the main leaf through the secondary leaf. In particular, the lower tube of the main leaf bears almost the entire weight of the door leaf during use, causing the main leaf to be pulled, and it itself is prone to deformation and dislocation. Furthermore, people also add springs to the hinge structure to enable it to produce a damping effect to prevent the door leaf from rotating uncontrollably during use and causing a large impact, which may cause injury and damage to people and the door leaf.

[0004] To solve the above problems, the applicant has previously applied for an improved utility model patent, with the publication number CN219262082U. It is suitable for processing using laser welding technology to improve the precision and wear resistance of the hinge, and to set springs between the tubes in the main and auxiliary leaves to reduce the wear between the tubes and give the hinge a damping effect.

[0005] However, during use of this improved hinge, since the tubes in the main and auxiliary leaves rotate in opposite directions, the spring pieces are subjected to forces in opposite directions on the upper and lower sides, causing the spring pieces to easily wear or even tear, making it difficult for the hinge to meet higher requirements for use.

[0006] Summary of the Invention

[0007] The purpose of the present invention is to provide a rotating structure and a hinge containing the structure. It proposes a rotating structure that is suitable for laser cutting and welding processing, with higher precision matching, reducing the friction generated during use, achieving smooth rotation, preventing self-deformation, and being able to generate a damping effect during uncontrolled rotation, and reducing the wear of the spring during use, so that it can meet higher requirements of use.

[0008] The rotating structure of the present invention is realized by the following scheme:

[0009] A rotating structure comprises an upper tube, a middle tube, a lower tube, six gaskets, two springs and a core; the structure is characterized in that it also comprises a plurality of ball bearings; wherein: the upper tube, the middle tube and the lower tube are all provided with mounting holes on the side along their length direction for the assembly and welding of the leaf blades; the upper tube, the middle tube and the lower tube are respectively assembled and welded with gaskets at both ends, and recessed portions are formed at both ends of the middle tube; the upper tube, the middle tube and the lower tube are sequentially mounted on the core through the center holes of each gasket, so that two tracks are respectively formed between the two recessed portions and the core; a group of ball bearings is placed in each of the two tracks; two springs are mounted on the core and are respectively located between the upper tube and the middle tube, and between the middle tube and the lower tube, so that the two springs are respectively in contact with the two groups of ball bearings; the gasket at the top end of the upper tube and the gasket at the bottom end of the lower tube are respectively welded and fixed to the core, so that the upper and lower tubes respectively squeeze the two groups of ball bearings in the tracks through the two springs.

[0010] In this way, the middle tube can rotate around the core, and due to the restrictions of the upper and lower tubes, the middle tube cannot be separated from the core, so the function of the middle tube rotating relative to the upper and lower tubes can be realized.

[0011] Secondly, the upper and lower springs can obtain elastic force during installation and extrusion, so that a certain distance can be maintained between the middle tube and the upper and lower tubes, so that the middle tube does not contact and wear when the upper and lower tubes rotate. At the same time, the springs can play a damping role in the rotation of the middle tube.

[0012] Furthermore, when the middle tube rotates, one surface of the upper and lower spring pieces contacts the ball, thereby reducing the friction during the rotation process and improving the service life of the spring pieces.

[0013] In addition, once the center core of the middle tube rotates and tilts, the balls will be forced to contact the side of the rail. At this time, the rotation of the middle tube can be achieved by the balls rolling on the side, and the balls can also prevent the core from tilting further during rolling.

[0014] In addition, the upper and lower tubes are welded together with the core through the gasket, so the upper and lower tubes themselves are not easily affected and deformed, making it difficult for the mounting holes on the upper and lower tubes to be misaligned.

[0015] In addition, the upper and lower tubes and the middle tube are all closed-loop structures, which overcomes the problem of gaps in the curled tubes. Not only are they beautiful in appearance, but their load-bearing capacity is also improved.

[0016] The hinge of the present invention is realized by the following scheme:

[0017] A hinge includes a main leaf and a secondary leaf, and is characterized in that it also includes the above-mentioned rotating structure, the main leaf forms upper and lower pins on one side, and the secondary leaf forms a middle pin on one side, and the upper and lower pins of the main leaf are respectively inserted into the mounting holes of the upper and lower tubes and welded together, and the middle pin of the secondary leaf is inserted into the mounting hole of the middle tube and welded together.

[0018] In this way, the main leaf is fixed to the core through the upper and lower tubes, and the auxiliary leaf is also fixed to the middle tube, so that the auxiliary leaf can rotate around the core following the middle tube, realizing the rotation function of the hinge.

[0019] The rotating structure and hinge containing the structure created by the present invention can be obtained by cutting the upper and lower tubes and the middle tube of an integrally formed closed rotating body, and each gasket can also be made of an integrally formed round tube. Their inner holes are smoother and easier to match with the core. Their central axis can also overlap with the central axis of the core, and the installation precision is improved. The rotation will be smoother and less likely to generate noise during rotation.

[0020] In the rotating structure and hinge containing the same of the present invention, the upper and lower tubes are welded to the core via gaskets, which helps to reduce their own deformation and ensure the accurate position of the mounting holes. The main plate is welded to the upper and lower tube mounting holes via upper and lower pins respectively, making it less likely to deform the main plate and helping to improve the overall bearing capacity.

[0021] In the present rotating structure and hinge incorporating the same, as the middle tube rotates about the core, its upper and lower ends respectively generate rolling friction with the two spring pieces via the balls. As a result, the friction force experienced by the spring pieces is relatively small, which can reduce wear on the spring pieces and help increase their service life. Furthermore, since the spring pieces are in contact with the balls, they maintain their elasticity during extrusion and can still play a damping role during uncontrolled rotation.

[0022] In addition, in the present rotating structure and hinge containing the same, when the middle tube is rotating, if the core shows any tilt or tilting tendency, the balls will be forced to contact the side of the rail. At this time, the rotation of the middle tube can still be achieved by the balls rolling on the side. At the same time, the balls can also prevent the core from tilting during the rolling process, thereby meeting higher usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG1 is a schematic diagram of a specific embodiment of the hinge structure of the present invention;

[0024] FIG2 is a schematic diagram of the hinge of FIG1 exploded;

[0025] Figure 3 is an enlarged view of portion A in Figure 1;

[0026] FIG4 is an enlarged view of portion B in FIG1 . DETAILED DESCRIPTION

[0027] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings:

[0028] 1, 2, 3 and 4, the rotating structure 3 of the specific embodiment includes an upper tube 31, a middle tube 32, a lower tube 33, a core 34, six gaskets 35a-35f, two sets of balls 36 and two springs 37; wherein: the upper tube 31, the middle tube 32 and the lower tube 33 can be made of the same pipe fitting, and the gaskets 35a-35f can also be made of the same round tube; the upper tube 31, the middle tube 32 and the lower tube 33 are all laser-cut on the side along their own length direction with mounting holes 31a, 32a, 33a for assembly and welding; two gaskets 35a and 35b are respectively embedded in the two ends of the upper tube 31 and welded together; two gaskets 35c and 35d are respectively embedded in the two ends of the middle tube 32 and welded together, and the middle tube is Recesses 35g and 35h are formed at the ends thereof; two gaskets 35e and 35f are respectively embedded at the two ends of the lower tube 33 and welded together; the upper tube 31, the middle tube 32 and the lower tube 33 are sequentially mounted on the core 34 through the center holes of the gaskets, so that two tracks are formed between the two recesses 35g and 35h and the core 34 respectively; a group of balls 36 are placed in each of the two tracks of the middle tube 32; two spring plates 37 are also mounted on the core 34, respectively located between the upper tube 31 and the middle tube 32, and between the middle tube 32 and the lower tube 33; the gasket 35a at the top end of the upper tube and the gasket 35f at the bottom end of the lower tube are respectively welded to the core 34, so that the gasket 35b at the bottom end of the upper tube and the gasket 35e at the top end of the lower tube respectively squeeze the two groups of balls 36 in the two tracks of the middle tube 32 through the two spring plates 37.

[0029] 1 and 2 , a hinge according to a specific embodiment includes a main sheet 1, a secondary sheet 2, and a rotating structure 3. The main sheet 1 is formed with upper and lower pins 11 and 12 on one side, and the secondary sheet 2 is formed with a middle pin 21 on one side. The upper and lower pins 11 and 12 of the main sheet 1 can be inserted into mounting holes 31 a and 33 a, respectively, and are fixed to the upper and lower tubes 31 and 33 by laser welding, respectively. The middle pin 21 of the secondary sheet 2 can be inserted into the mounting hole 32 a and is fixed to the middle tube 32 by laser welding. In this way, the secondary sheet 2 can rotate around the core 34 through the middle tube 32, so that the secondary sheet 2 can rotate relative to the main sheet 1.

Claims

1. A rotating structure comprising an upper tube, a middle tube, a lower tube, six gaskets, two springs, and a core; characterized by: It also includes a number of ball bearings; among them: the upper tube, the middle tube and the lower tube are all provided with mounting holes on the side along their own length direction for the assembly and welding of the leaf plates; the upper tube, the middle tube and the lower tube are respectively assembled and welded with gaskets at both ends, and recessed parts are formed at both ends of the middle tube; the upper tube, the middle tube and the lower tube are sequentially mounted on the core through the center holes of each gasket, so that two tracks are respectively formed between the two recessed parts and the core; a group of ball bearings are placed in each of the two tracks; two spring plates are mounted on the core and are respectively located between the upper tube and the middle tube, and between the middle tube and the lower tube, so that the two spring plates are respectively in contact with the two groups of ball bearings; the gasket at the top end of the upper tube and the gasket at the bottom end of the lower tube are respectively welded and fixed to the core, so that the upper and lower tubes respectively squeeze the two groups of ball bearings in the tracks through the two spring plates.

2. A hinge comprising a main leaf and a secondary leaf, characterized in that: It also includes the rotating structure of claim 1, wherein the main plate forms upper and lower pins on one side, and the auxiliary plate forms a middle pin on one side, and the upper and lower pins of the main plate are respectively inserted into the mounting holes of the upper and lower tubes and welded together, and the middle pin of the auxiliary plate is inserted into the mounting hole of the middle tube and welded together.

Images