A dustproof bearing hinge

Abstract

The present invention relates to the field of bearing technology, and in particular to a dust-proof bearing hinge, wherein an auxiliary bearing body for the hinge includes an outer ring component, a bearing ball, an inner ring component and a connecting component, wherein the outer ring component mainly includes a first outer ring assembly and a second outer ring assembly, and the inner ring component mainly consists of a first inner ring assembly and a second inner ring assembly, wherein the first protective bonding plate at the end of the first inner ring assembly is adapted to fit with the first bonding groove on the first outer ring assembly, and the second protective bonding plate at the end of the second inner ring assembly is adapted to fit with the second bonding groove on the second outer ring assembly, thereby preventing external impurities from entering the interior of the auxiliary bearing body and affecting its operation, and on this basis, the present scheme also provides a connecting component to facilitate lubrication of the auxiliary bearing body during later use, without the need to disassemble the auxiliary bearing body, and the operation is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of bearings, in particular to a dustproof bearing hinge. Background Art

[0002] A hinge is a mechanical device used to connect two solid objects and allow them to rotate relative to each other. Hinges can be made of movable components or foldable materials. To meet hinge requirements, such as reducing noise and increasing flexibility, hinges are typically paired with corresponding bearings. However, for extended use, bearings require dust protection to prevent interference from foreign matter.

[0003] A search of the existing Chinese authorized patent document with publication number CN220929965U discloses a composite sliding bearing for a high-damping automotive hinge. The solution includes a bearing body, a mounting ring fixedly connected to the rear end of the bearing body, a bearing inner ring provided inside the bearing body, a reserved groove provided on the outside of the bearing inner ring, a fixing block fixedly connected to both ends of the reserved groove, one end of the fixing block fixedly connected to a connecting shaft, a bearing ball provided on the outside of the connecting shaft, a connecting ring provided inside the mounting ring, and a mounting plate fixedly connected to the outside of the connecting ring. The solution protects the interior of the bearing by cooperating with a dustproof plate and a sealing ring to prevent external impurities from affecting the interior of the bearing. However, the dustproof plate provided in the solution is fixed by bolts. On the one hand, relying solely on simple bolt fixing is not stable enough and is prone to loosening after long-term use, thereby affecting the tightness of the dustproof plate and the bearing, affecting its dustproof effect. Moreover, when lubricating oil needs to be added to the interior of the bearing later, the dustproof plate needs to be removed and then installed again, which is cumbersome.

[0004] To this end, the present invention proposes a dustproof bearing hinge for solving the above problems. Summary of the Invention

[0005] The object of the present invention is to provide a dustproof bearing hinge to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a dustproof bearing hinge, comprising a first hinge plate, a second hinge plate, and a connecting pin, wherein a first mounting hole is provided in the first hinge plate and a second mounting hole is provided in the second hinge plate, a first connecting sleeve is symmetrically fixedly provided on one side of the first hinge plate, and a second connecting sleeve is fixedly provided on one side of the second hinge plate, and the second connecting sleeve and the first connecting sleeve are both adapted to be plugged and connected to the connecting pin;

[0007] A placement cavity is provided inside the outer tube opening of the first connecting sleeve, and mounting thread grooves are symmetrically provided in the placement cavity, and an auxiliary bearing body is provided in the placement cavity.

[0008] Preferably, the auxiliary bearing body includes an outer ring component, a bearing ball, an inner ring component and a connecting component, wherein the outer ring component includes a first outer ring assembly, a first loading cavity, a first connecting groove, a first assembly screw groove, a first oil guide groove, a through groove, a receiving groove, a mounting screw, a first fitting groove, a first auxiliary ring groove and a second outer ring assembly, a second loading cavity, a second connecting groove, a first cylindrical through groove, a second fitting groove, a second auxiliary ring groove and a positioning slot; the first loading cavity is equidistantly arranged in the first outer ring assembly, and adjacent first loading cavities are connected by a first connecting groove, the first assembly screw groove is arranged on the first outer ring assembly, and a first oil guide groove is arranged on the side of the first assembly screw groove, and the first oil guide groove is connected to one of the first loading cavities.

[0009] Preferably, a through groove is symmetrically provided in the first outer ring assembly, and a receiving groove is provided at one end of the through groove. The mounting screw passes through the through groove, and the end of the mounting screw is threadedly connected with the mounting thread groove in the placement cavity. A first fitting groove is provided on the back side of the first outer ring assembly, and a first auxiliary ring groove is provided in the first fitting groove.

[0010] Preferably, second loading cavities are equidistantly arranged in the second outer ring assembly, and adjacent second loading cavities are connected by second connecting grooves. A first cylindrical through groove is provided through the second outer ring assembly, the second fitting groove is provided on the second outer ring assembly, and a second auxiliary ring groove is provided in the second fitting groove. A positioning groove is provided on the outer end face of the second outer ring assembly, and the positioning groove is symmetrically provided with respect to the first cylindrical through groove.

[0011] Preferably, the second loading chamber and the first loading chamber are arranged in corresponding positions and in the same number of groups, and are spliced ​​together to form a ball loading chamber, in which a bearing ball is placed; the second connecting groove and the first connecting groove are arranged in corresponding positions, and are spliced ​​together to form an oil connecting groove; the second outer ring assembly and the first outer ring assembly are spliced ​​together to form an outer ring main body, and the two are firmly connected by a set connecting component.

[0012] Preferably, the inner ring assembly includes a first inner ring assembly, a first annular mating groove, a first protective bonding plate, a second assembly screw groove and a second inner ring assembly, a second annular mating groove, a second protective bonding plate, a second cylindrical through groove, and a positioning screw; a first annular mating groove is provided on the outer side of the end of one end of the first inner ring assembly, and a first protective bonding plate is fixedly provided on the other end of the first inner ring assembly, and a second assembly screw groove is symmetrically provided at the same end as the first annular mating groove.

[0013] Preferably, a second annular mating groove is provided on the side of one end of the second inner ring assembly, and a second protective bonding plate is fixedly provided at the other end of the second inner ring assembly. A second cylindrical through groove is also symmetrically provided in the second inner ring assembly, and the positioning screw passes through the second cylindrical through groove and the end is threadedly connected with the second assembly screw groove.

[0014] Preferably, the first inner ring assembly and the second inner ring assembly are spliced ​​together to form an inner ring body, and the two are connected and fixed by set positioning screws, and the inner ring body is sleeved on the connecting pin shaft; the first annular matching groove and the second annular matching groove are set in corresponding positions, and the two are spliced ​​together to form an annular guide groove, and the annular guide groove is used in conjunction with the bearing ball, and the first protective fitting plate at the end of the first inner ring assembly is adapted to fit with the first fitting groove on the first outer ring assembly, and the second protective fitting plate at the end of the second inner ring assembly is adapted to fit with the second fitting groove on the second outer ring assembly.

[0015] Preferably, the connecting assembly includes a connecting stud body, a cylindrical screw head, an oil guide cavity, a limiting slot, an auxiliary side through slot, a concave positioning strip and a sealing plug; a cylindrical screw head is fixedly provided at one end of the connecting stud body, and an oil guide cavity is provided through the connecting stud body along its axial direction, and the oil guide cavity extends to the end of the cylindrical screw head, a limiting slot is provided at the end of the cylindrical screw head, and the limiting slot is connected to the cavity opening of the oil guide cavity.

[0016] Preferably, an auxiliary side through groove is provided at the side position of the connecting stud body, and the auxiliary side through groove is connected to the oil guide cavity. A sealing plug is fixedly provided at the inner middle position of the concave positioning strip, and the end of the sealing plug is adapted to be plugged into the cavity opening of the oil guide cavity.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The dustproof bearing hinge designed by the present invention includes a first hinge plate, a second hinge plate and a connecting pin, a first mounting hole is provided in the first hinge plate and a second mounting hole is provided in the second hinge plate, a first connecting sleeve is symmetrically fixedly provided on one side of the first hinge plate and a second connecting sleeve is fixedly provided on one side of the second hinge plate, the second connecting sleeve and the first connecting sleeve are both adapted to be plugged and connected with the connecting pin; wherein the present invention provides a placement cavity on the inner side of the outer tube opening of the first connecting sleeve, and symmetrically provides mounting thread grooves in the placement cavity, and an auxiliary bearing body is provided in the placement cavity; the auxiliary bearing body for the hinge in the present invention includes an outer ring assembly, a bearing ball, an inner ring assembly and a connecting assembly, wherein the outer ring assembly is mainly It includes a first outer ring assembly and a second outer ring assembly, and the inner ring component is mainly composed of a first inner ring assembly and a second inner ring assembly, wherein the first protective bonding plate at the end of the first inner ring assembly is adapted to fit with the first bonding groove on the first outer ring assembly, and the second protective bonding plate at the end of the second inner ring assembly is adapted to fit with the second bonding groove on the second outer ring assembly, thereby preventing external impurities from entering the interior of the auxiliary bearing body and affecting its work, and thereby preventing dust and other impurities from accumulating inside the auxiliary bearing body; and on this basis, the present scheme also uses the connection component set up to lubricate the auxiliary bearing body during later use, without the need to disassemble the auxiliary bearing body, and is convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the bearing hinge structure connection of the present invention;

[0020] Figure 2 for Figure 1 A magnified schematic diagram of the structural connection at center A;

[0021] Figure 3 This is a schematic diagram of the internal structure connection of the outer end of the first connecting sleeve of the present invention;

[0022] Figure 4 for Figure 3 A magnified schematic diagram of the structural connection at point B in the middle;

[0023] Figure 5 This is a schematic diagram of the front side of the explosion connection of the auxiliary bearing body structure of the present invention;

[0024] Figure 6 This is a schematic diagram of the auxiliary bearing structure of the present invention connected to the explosion rear side;

[0025] Figure 7 Schematic diagram of the front side of the structure of the first outer ring assembly and the first inner ring assembly of the present invention;

[0026] Figure 8 for Figure 7 A magnified schematic diagram of the structural connection at point C in the middle;

[0027] Figure 9 It is a schematic diagram of the back side of the structure of the first outer ring assembly and the first inner ring assembly of the present invention;

[0028] Figure 10 for Figure 9 A magnified schematic diagram of the structural connection at point D in the middle;

[0029] Figure 11 It is a schematic diagram of the back side of the structure of the second outer ring assembly and the second inner ring assembly of the present invention;

[0030] Figure 12 for Figure 11 Enlarged schematic diagram of the structural connection at E in the middle;

[0031] Figure 13 Schematic diagram of the front side of the structure of the second outer ring assembly and the second inner ring assembly of the present invention;

[0032] Figure 14 for Figure 13 Enlarged schematic diagram of the structural connection at F in the middle.

[0033] In the figure: first hinge plate 1, first mounting hole 101, first connecting sleeve 102, placement cavity 103, mounting thread groove 104, second hinge plate 2, second mounting hole 201, second connecting sleeve 202, connecting pin 3, first outer ring assembly 401, first loading cavity 402, first connecting groove 403, first assembly thread groove 404, first oil guide groove 405, through groove 406, receiving groove 407, mounting screw 408, first fitting groove 409, first auxiliary ring groove 410, bearing ball 5, second outer ring assembly 601, second loading cavity 602, second connecting groove Groove 603, first cylindrical through groove 604, second fitting groove 605, second auxiliary annular groove 606, positioning card groove 607, first inner ring assembly 701, first annular fitting groove 702, first protective fitting plate 703, second assembly screw groove 704, second inner ring assembly 801, second annular fitting groove 802, second protective fitting plate 803, second cylindrical through groove 804, positioning screw 805, connecting stud body 901, cylindrical screw head 902, oil guide cavity 903, limiting card groove 904, auxiliary edge through groove 905, concave positioning card strip 906, sealing plug 907. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention are described clearly and completely below. The embodiments of the present invention and all other embodiments obtained by persons of ordinary skill in the art without creative work are within the scope of protection of the present invention.

[0035] Example 1: Please refer to Figures 1-14A dustproof bearing hinge comprises a first hinge plate 1, a second hinge plate 2 and a connecting pin 3, a first mounting hole 101 is provided in the first hinge plate 1 and a second mounting hole 201 is provided in the second hinge plate 2, a first connecting sleeve 102 is symmetrically fixedly provided on one side of the first hinge plate 1 and a second connecting sleeve 202 is fixedly provided on one side of the second hinge plate 2, the second connecting sleeve 202 and the first connecting sleeve 102 are both adapted to be plugged into and connected with the connecting pin 3; wherein this scheme provides a placement cavity 103 on the inner side of the outer tube mouth of the first connecting sleeve 102, and symmetrically provides mounting thread grooves 104 in the placement cavity 103, and an auxiliary bearing body is provided in the placement cavity 103.

[0036] The auxiliary bearing body for the hinge in this solution includes an outer ring component, a bearing ball 5, an inner ring component and a connecting component, wherein the outer ring component mainly includes a first outer ring assembly 401 and a second outer ring assembly 601, and the inner ring component mainly includes a first inner ring assembly 701 and a second inner ring assembly 801, wherein the first protective bonding plate 703 at the end of the first inner ring assembly 701 is adapted to fit with the first bonding groove 409 on the first outer ring assembly 401, and the second protective bonding plate 803 at the end of the second inner ring assembly 801 is adapted to fit with the second bonding groove 609 on the second outer ring assembly 601. 5 is adapted and fits well with each other, thereby preventing foreign matter from entering the interior of the auxiliary bearing body and affecting its operation, and thereby preventing dust and other impurities from accumulating inside the auxiliary bearing body; and on this basis, the present solution also provides a connection component, which can be used to lubricate the auxiliary bearing body during later use without disassembling the auxiliary bearing body, and is easy to operate. In addition, the coordinated use of the connecting stud body 901, the concave positioning clip 906, and the positioning slot 607 can further improve the connection stability between the first outer ring assembly 401 and the second outer ring assembly 601.

[0037] The first outer ring assembly 401 in the outer ring component is provided with a first loading cavity 402 at equal intervals, and the adjacent first loading cavities 402 are connected by a first connecting groove 403, a first assembling screw groove 404 is provided on the first outer ring assembly 401, and a first oil guide groove 405 is provided on the side of the first assembling screw groove 404, and the first oil guide groove 405 is connected with one of the first loading cavities 402; the first outer ring assembly 401 is also symmetrically provided with a through groove 406, and a receiving groove 407 is provided at one end notch of the through groove 406, and a mounting screw 408 passes through the through groove 406, and the end of the mounting screw 408 is threadedly connected with the mounting screw groove 104 in the placement cavity 103, a first fitting groove 409 is provided on the back side of the first outer ring assembly 401, and a first auxiliary ring groove 410 is provided in the first fitting groove 409; the second loading cavity 602 is provided with an equal interval in the second outer ring assembly 601, The adjacent second loading chambers 602 are connected by a second connecting groove 603, a first cylindrical through groove 604 is provided through the second outer ring assembly 601, a second fitting groove 605 is provided on the second outer ring assembly 601, and a second auxiliary ring groove 606 is provided in the second fitting groove 605, a positioning groove 607 is provided on the outer end face of the second outer ring assembly 601, and the positioning groove 607 is symmetrically provided with respect to the first cylindrical through groove 604; the second loading chamber 602 and the first loading chamber 402 are provided in corresponding positions and the same number of groups, and the two are spliced ​​to form a ball loading chamber, in which a bearing ball 5 is placed, the second connecting groove 603 and the first connecting groove 403 are provided in corresponding positions, and the two are spliced ​​to form an oil connecting groove; the second outer ring assembly 601 and the first outer ring assembly 401 are spliced ​​to form an outer ring body, and the two are firmly connected by the provided connecting component.

[0038] The first protective fitting plate 703 is adapted to fit with the first fitting groove 409, and the second protective fitting plate 803 is adapted to fit with the second fitting groove 605, so that after the outer ring assembly and the inner ring assembly are spliced ​​and installed, the bearing balls 5 inside will not be exposed to the outside, and foreign dust and other impurities will not easily enter the auxiliary bearing body and accumulate; a first auxiliary ring groove 410 is provided on the first fitting groove 409, and a second auxiliary ring groove 606 is provided on the second fitting groove 605. The purpose of providing the first auxiliary ring groove 410 and the second auxiliary ring groove 606 here is to play a buffering protection role, that is, for foreign dust and impurities, if there is fine dust-free impurities from the first protective fitting plate 409, the first auxiliary ring groove 410 and the second auxiliary ring groove 606 will be When dust enters the gap between the bonding plate 703 and the first bonding groove 409 or the gap between the second protective bonding plate 803 and the second bonding groove 605, or when fine dust accumulates at the gap position, it may slowly penetrate from the gap position during long-term operation. At this time, the auxiliary ring groove provided has a temporary storage and blocking effect, further improving its dust-proof function. Similarly, on the other hand, when filling lubricating oil, if the lubricating oil overflows from the gap between the first protective bonding plate 703 and the first bonding groove 409 or the gap between the second protective bonding plate 803 and the second bonding groove 605, the auxiliary ring groove provided at this time can provide a blocking The function of blocking and buffering is to prevent the lubricating oil from leaking outward and causing waste of resources. A first annular matching groove 702 is provided on the outer side of the end of one end of the first inner ring assembly 701 in the inner ring component, and a first protective bonding plate 703 is fixedly provided at the other end of the first inner ring assembly 701, and a second assembly screw groove 704 is symmetrically provided at the same end as the first annular matching groove 702; a second annular matching groove 802 is provided on the side of one end of the second inner ring assembly 801, and a second protective bonding plate 803 is fixedly provided at the other end of the second inner ring assembly 801, and a second cylindrical through groove 804 is also symmetrically provided in the second inner ring assembly 801, and a positioning screw 805 passes through the second cylindrical through groove 804. The through groove 804 and the end thereof are adapted to be threadedly connected with the second assembly screw groove 704; and the two are connected and fixed by the set positioning screw 805, and the inner ring body is sleeved on the connecting pin shaft 3; the first annular matching groove 702 and the second annular matching groove 802 are set in corresponding positions, and the two are spliced ​​to form an annular guide groove, which is used in conjunction with the bearing ball 5, and the first protective fitting plate 703 at the end of the first inner ring assembly 701 is adapted to fit with the first fitting groove 409 on the first outer ring assembly 401, and the second protective fitting plate 803 at the end of the second inner ring assembly 801 is adapted to fit with the second fitting groove 605 on the second outer ring assembly 601.

[0039] For the installation and use of the auxiliary bearing body, first fit the first protective fitting plate 703 at the end of the first inner ring assembly 701 into the first fitting groove 409 on the back side of the first outer ring assembly 401, and the first inner ring assembly 701 is located on the inner side of the first outer ring assembly 401, and then place the two together in the placement cavity 103 on the inner side of the outer tube mouth of the first connecting sleeve 102, and align the through groove 406 in the first outer ring assembly 401 with the installation thread groove 104 in the placement cavity 103, and then install it. Install the screws 408, and then place the bearing balls 5 one by one in the first loading cavity 402 on the first outer ring assembly 401; then install the second outer ring assembly 601, that is, the second outer ring assembly 601 is tightly attached to the first outer ring assembly 401, and the second loading cavity 602 on the second outer ring assembly 601 is aligned with the bearing balls 5, and at the same time, the first cylindrical through groove 604 provided in the second outer ring assembly 601 is aligned with the first assembly screw groove 404 on the first outer ring assembly 401. The second outer ring assembly 601 is then installed and fixed by the provided connecting component, that is, the second outer ring assembly 601 is connected to the first outer ring assembly 401; finally, the second inner ring assembly 801 is installed, that is, the second inner ring assembly 801 is inserted into the inner circle of the second outer ring assembly 601, and the second protective laminating plate 803 at the end of the second inner ring assembly 801 is fitted with the second laminating groove 605 on the second outer ring assembly 601, and the second inner ring assembly 80 is adjusted. 1, so that the second cylindrical through groove 804 is aligned with the second assembly screw groove 704 on the first inner ring assembly 701, and then the positioning screw 805 is passed through the second cylindrical through groove 804 and threadedly connected to the second assembly screw groove 704, and the connection between the first inner ring assembly 701 and the second inner ring assembly 801 is completed, wherein the first inner ring assembly 701 and the second inner ring assembly 801 are spliced ​​to form an inner ring body, the inner ring body can be rotated, and the inner ring body is sleeved with the connecting pin shaft 3.

[0040] With regard to the use of the connecting assembly, a cylindrical screw head 902 is fixedly provided at one end of the connecting stud body 901, and an oil guide cavity 903 is provided through the connecting stud body 901 along its axial direction, and the oil guide cavity 903 extends to the end of the cylindrical screw head 902, and a limiting card groove 904 is provided at the end of the cylindrical screw head 902, and the limiting card groove 904 is communicated with the cavity opening of the oil guide cavity 903; an auxiliary side through groove 905 is provided at the side position of the connecting stud body 901, and the auxiliary side through groove 905 is communicated with the oil guide cavity 903, and a sealing plug 907 is fixedly provided at the middle position of the inner side of the concave positioning card strip 906, and the end of the sealing plug 907 is adapted to be plugged into the cavity opening of the oil guide cavity 903; The connecting stud body 901 is inserted into the first cylindrical through groove 604 in the second outer ring assembly 601, and is threadedly connected to the first assembly screw groove 404 on the first outer ring assembly 401. After the connecting stud body 901 is tightened, the auxiliary side through groove 905 arranged on the side of the connecting stud body 901 reaches the side position of the first oil guide groove 405; and the limiting groove 904 arranged at the end of the cylindrical screw head 902 is aligned with the positioning groove 607 on the second outer ring assembly 601, and then the two ends of the concave positioning strip 906 are respectively connected to the positioning groove 607, and the sealing plug 907 arranged in the middle of the inner side of the concave positioning strip 906 seals the cavity opening of the oil guide cavity 903 at the end of the cylindrical screw head 902.

[0041] The connection between the concave positioning card strip 906 and the positioning card slot 607 can prevent the connecting stud body 901 from loosening due to axial movement, that is, improve the stability of the connection between the first outer ring assembly 401 and the second outer ring assembly 601; the sealing plug 907 provided can seal the cavity opening of the oil guide cavity 903 to prevent external dust and impurities from entering the oil guide cavity 903. When lubricating oil needs to be added in the later stage, the concave positioning card strip 906 is pulled out, and then the lubricating oil is injected into the oil guide cavity 903 through a needle. The introduced lubricating oil is injected into the auxiliary side groove 903. 05 enters the first oil guide groove 405, and then enters the first loading chamber 402 connected to the first oil guide groove 405 to lubricate the bearing ball 5, and the adjacent first loading chambers 402 are connected through the first connecting groove 403, and the added lubricating oil will also enter other first loading chambers 402. After adding an appropriate amount, the cavity opening of the oil guide cavity 903 on the cylindrical screw head 902 is sealed by the sealing plug 907, and then the sealing plugs 907 on the cylindrical screw heads 902 at other positions are pulled out, and the lubricating oil is continued to be added, which facilitates the uniformity of the lubricating oil filling.

[0042] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A dustproof bearing hinge, comprising a first hinge plate (1), a second hinge plate (2) and a connecting pin (3), wherein a first mounting hole (101) is provided in the first hinge plate (1) and a second mounting hole (201) is provided in the second hinge plate (2), a first connecting sleeve (102) is symmetrically fixedly provided on one side of the first hinge plate (1) and a second connecting sleeve (202) is fixedly provided on one side of the second hinge plate (2), and the second connecting sleeve (202) and the first connecting sleeve (102) are both adapted to be plug-connected with the connecting pin (3); Its characteristics are: A placement cavity (103) is provided on the inner side of the outer tube opening of the first connecting sleeve (102), and mounting thread grooves (104) are symmetrically provided in the placement cavity (103), and an auxiliary bearing body is provided in the placement cavity (103); The auxiliary bearing body includes an outer ring component, a bearing ball (5), an inner ring component and a connecting component, wherein the outer ring component includes a first outer ring assembly (401), a first loading cavity (402), a first connecting groove (403), a first assembly screw groove (404), a first oil guide groove (405), a through groove (406), a receiving groove (407), a mounting screw (408), a first fitting groove (409), a first auxiliary ring groove (410) and a second outer ring assembly (601), a second loading cavity (602), a second connecting groove (603), a first cylindrical through groove (604) , a second fitting groove (605), a second auxiliary ring groove (606), and a positioning card groove (607); first loading chambers (402) are arranged at equal intervals in the first outer ring assembly (401), and adjacent first loading chambers (402) are connected by a first connecting groove (403); the first assembling screw groove (404) is arranged on the first outer ring assembly (401), and a first oil guide groove (405) is arranged on the side of the first assembling screw groove (404), and the first oil guide groove (405) is connected to one of the first loading chambers (402); Second loading cavities (602) are arranged at equal intervals in the second outer ring assembly (601), and adjacent second loading cavities (602) are connected via second connecting grooves (603); a first cylindrical through groove (604) is provided through the second outer ring assembly (601); the second fitting groove (605) is provided on the second outer ring assembly (601), and a second auxiliary annular groove (606) is provided in the second fitting groove (605); a positioning groove (607) is provided on the outer end surface of the second outer ring assembly (601), and the positioning groove (607) is symmetrically arranged with respect to the first cylindrical through groove (604); The second loading chamber (602) and the first loading chamber (402) are arranged at corresponding positions and have the same number of groups, and the two are spliced ​​together to form a ball loading chamber, in which a bearing ball (5) is placed; the second connecting groove (603) and the first connecting groove (403) are arranged at corresponding positions, and the two are spliced ​​together to form an oil connecting groove; the second outer ring assembly (601) and the first outer ring assembly (401) are spliced ​​together to form an outer ring body, and the two are firmly connected by a set connecting component; The connecting assembly comprises a connecting stud body (901), a cylindrical screw head (902), an oil guide cavity (903), a limiting slot (904), an auxiliary side through slot (905), a concave positioning clip (906) and a sealing plug (907); one end of the connecting stud body (901) is fixedly provided with the cylindrical screw head (902), and the connecting stud body (901) is provided with an oil guide cavity (903) along its axial direction, and the oil guide cavity (903) extends to the end of the cylindrical screw head (902), and the end of the cylindrical screw head (902) is provided with a limiting slot (904), and the limiting slot (904) is connected to the cavity opening of the oil guide cavity (903); An auxiliary side through groove (905) is provided on the side of the connecting stud body (901), and the auxiliary side through groove (905) is connected to the oil guide cavity (903). A sealing plug (907) is fixedly provided at the middle position of the inner side of the concave positioning clip (906), and the end of the sealing plug (907) is adapted to be plugged into the cavity opening of the oil guide cavity (903); then, the two ends of the concave positioning clip (906) are respectively connected to the positioning slot (607).

2. The dustproof bearing hinge according to claim 1, characterized in that: The first outer ring assembly (401) is also symmetrically provided with a through groove (406), and a notch at one end of the through groove (406) is provided with a receiving groove (407), the mounting screw (408) passes through the through groove (406), and the end of the mounting screw (408) is threadedly connected with the mounting thread groove (104) in the placement cavity (103), and the back side of the first outer ring assembly (401) is provided with a first fitting groove (409), and a first auxiliary ring groove (410) is provided in the first fitting groove (409).

3. The dustproof bearing hinge according to claim 1, characterized in that: The inner ring assembly comprises a first inner ring assembly (701), a first annular matching groove (702), a first protective plywood (703), a second assembly screw groove (704) and a second inner ring assembly (801), a second annular matching groove (802), a second protective plywood (803), a second cylindrical through groove (804), and a positioning screw (805); a first annular matching groove (702) is provided on the outer side of the end of one end of the first inner ring assembly (701), and a first protective plywood (703) is fixedly provided on the other end of the first inner ring assembly (701), and a second assembly screw groove (704) is symmetrically provided on the same end as the first annular matching groove (702).

4. The dustproof bearing hinge according to claim 3, characterized in that: A second annular matching groove (802) is provided on the side of one end of the second inner ring assembly (801), and a second protective bonding plate (803) is fixedly provided at the other end of the second inner ring assembly (801). A second cylindrical through groove (804) is also symmetrically provided in the second inner ring assembly (801), and the positioning screw (805) passes through the second cylindrical through groove (804) and the end thereof is threadedly connected with the second assembly screw groove (704).

5. The dustproof bearing hinge according to claim 3, characterized in that: The first inner ring assembly (701) and the second inner ring assembly (801) are spliced ​​together to form an inner ring body, and the two are connected and fixed by a set positioning screw (805), and the inner ring body is sleeved on the connecting pin shaft (3); the first annular matching groove (702) and the second annular matching groove (802) are set at corresponding positions, and the two are spliced ​​together to form an annular guide groove, which is used in conjunction with the bearing ball (5); the first protective fitting plate (703) at the end of the first inner ring assembly (701) is adapted to fit the first fitting groove (409) on the first outer ring assembly (401), and the second protective fitting plate (803) at the end of the second inner ring assembly (801) is adapted to fit the second fitting groove (605) on the second outer ring assembly (601).

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