Round hinge

Abstract

The utility model relates to the technical field of hinges, and discloses a round hinge which comprises a first hinge piece, a second hinge piece and a rotating pin rod, the first hinge piece is rotationally connected with the second hinge piece through the rotating pin rod, an oil storage groove is formed in the upper surface of the rotating pin rod, and a plurality of oil outlet holes are formed in the outer surface of the rotating pin rod. And a connecting block is arranged on the upper surface of the rotating pin rod, a containing groove is formed in the upper surface of the connecting block, an oil inlet hole is formed in the inner bottom of the containing groove, one end of the oil inlet hole extends into the oil storage groove, a limiting hole is formed in the outer surface of the connecting block, and a sealing structure is installed in the containing groove. According to the hinge, lubricating oil can be injected into the oil storage groove through the oil inlet hole, meanwhile, the first hinge piece and the second hinge piece can be lubricated through matched use of the oil absorption sponge and the oil outlet hole, the hinge is prevented from being abraded after being used for a long time, and the service life of the hinge is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of hinges, in particular to a circular hinge. Background Art

[0002] A hinge is a component used to connect two objects and allow the two objects to rotate relative to each other. Usually, a hinge includes two stainless steel leaves and a rotating pin. The two leaves are sleeved and rotatably connected to the rotating pin. At the same time, in order to facilitate the installation of the leaves, the leaves and the rotating pin are clearance-matched. The two leaves are fixedly installed on the two objects respectively, thereby allowing the two objects to rotate relative to each other.

[0003] The utility model patent application document with publication number "CN217205954U" discloses a hinge, which is mainly composed of a first leaf piece, a second leaf piece, a rotating pin and a mounting sleeve. This technical solution has the effect of reducing the abnormal noise generated between the leaf piece and the rotating pin.

[0004] The hinge disclosed in the above document has the following defects: during the use of the hinge, after the installation sleeve and the hinge piece are rubbed and squeezed for a long time, the damping oil will seep out and decrease, so that the installation sleeve and the hinge piece can no longer rotate relative to each other through the lubrication of the damping oil, resulting in wear of the hinge piece and the installation sleeve, thereby reducing the service life of the hinge.

[0005] It can be seen from this that the existing hinges do not have a structure for lubricating the hinge pieces, and it is necessary to improve the existing deficiencies and provide a circular hinge. Utility Model Content

[0006] The purpose of the utility model is to provide a circular hinge to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0008] The utility model discloses a circular hinge, comprising a first leaf, a second leaf and a rotating pin, wherein the first leaf is rotatably connected with the second leaf through the rotating pin, an oil storage groove is provided on the upper surface of the rotating pin, a plurality of oil outlet holes are provided on the outer surface of the rotating pin, an oil absorbing sponge is installed inside the oil storage groove, a connecting block is provided on the upper surface of the rotating pin, a placement groove is provided on the upper surface of the connecting block, an oil inlet hole is provided on the inner bottom of the placement groove, one end of the oil inlet hole extends to the inside of the oil storage groove, a limiting hole is provided on the outer surface of the connecting block, one end of the limiting hole extends to the inside of the placement groove, a sealing structure is installed inside the placement groove, the sealing structure comprises a sealing block, a slide plate, a limiting column and a first spring, a cavity is provided inside the sealing block, a slide plate is slidably connected inside the cavity, one end of the first spring is installed on the inner surface of the cavity, the other end of the first spring is installed on the outer surface of the slide plate, a limiting column is provided on one end of the slide plate away from the first spring, one end of the limiting column passes through the sealing block and is installed inside the limiting hole.

[0009] Furthermore, a plurality of mounting holes are provided on the outer surfaces of the first leaf piece and the second leaf piece.

[0010] Furthermore, an outer surface of the rotating pin is provided with an external thread, a fixing block is mounted on the rotating pin via the external thread, and an outer surface of the fixing block is provided with anti-slip patterns.

[0011] Furthermore, the outer surfaces of the first sheet and the second sheet are both abutted with sealing rings, one of the sealing rings is installed on the lower surface of the connecting block, and the other sealing ring is installed on the upper surface of the fixing block.

[0012] Furthermore, the sealing structure also includes an abutment column and a second spring. The lower surface of the sealing block is equipped with the abutment column and the second spring. The abutment column is installed inside the oil inlet hole, and the lower surface of the second spring abuts against the inner bottom of the placement groove.

[0013] Furthermore, outer surfaces of the first sheet and the second sheet are coated with a wear-resistant coating.

[0014] The utility model has the following beneficial effects:

[0015] (1) The utility model can inject lubricating oil into the oil storage tank through the oil inlet hole, and at the same time, through the coordinated use of the oil absorption sponge and the oil outlet hole, the first leaf piece and the second leaf piece can be lubricated, thereby preventing the hinge from being worn after long-term use and extending the service life of the hinge.

[0016] (2) The utility model can seal the oil inlet hole and the placement groove by using the sealing block and the abutment column to prevent the entry of dust and impurities, thereby extending the service life of the oil absorbing sponge.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of the structure of the utility model when the first leaf sheet and the second leaf sheet are unfolded;

[0020] Figure 2 This is a schematic diagram of the structure of the first leaf sheet and the second leaf sheet of the utility model when they are folded;

[0021] Figure 3 It is an exploded diagram of the overall structure of the utility model;

[0022] Figure 4 This is a cross-sectional view of the rotating pin and the sealing structure of the utility model;

[0023] Figure 5 This is a cross-sectional view of the rotating pin structure of the utility model;

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] In the figure: 1. first leaf; 2. second leaf; 3. rotating pin; 301. oil storage tank; 302. oil outlet; 303. connecting block; 304. placement slot; 305. oil inlet; 306. limiting hole; 307. external thread; 4. oil absorbing sponge; 5. sealing structure; 501. sealing block; 502. slide plate; 503. limiting column; 504. first spring; 505. abutting column; 506. second spring; 6. mounting hole; 7. fixing block; 8. sealing ring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1 - Figure 5As shown, the utility model is a circular hinge, comprising a first leaf 1, a second leaf 2 and a rotating pin 3, the first leaf 1 is rotatably connected to the second leaf 2 via the rotating pin 3, an oil storage tank 301 is provided on the upper surface of the rotating pin 3, a plurality of oil outlet holes 302 are provided on the outer surface of the rotating pin 3, an oil absorbing sponge 4 is installed inside the oil storage tank 301, a connecting block 303 is provided on the upper surface of the rotating pin 3, a placement groove 304 is provided on the upper surface of the connecting block 303, an oil inlet hole 305 is provided on the inner bottom of the placement groove 304, one end of the oil inlet hole 305 extends to the inside of the oil storage tank 301, and a limited number of oil outlet holes 302 are provided on the outer surface of the connecting block 303. The positioning hole 306, one end of the limiting hole 306 extends to the interior of the placement groove 304, and a sealing structure 5 is installed inside the placement groove 304. The sealing structure 5 includes a sealing block 501, a slide plate 502, a limiting column 503 and a first spring 504. A cavity is opened inside the sealing block 501, and the slide plate 502 is slidably connected inside the cavity. One end of the first spring 504 is installed on the inner surface of the cavity, and the other end of the first spring 504 is installed on the outer surface of the slide plate 502. A limiting column 503 is provided at one end of the slide plate 502 away from the first spring 504, and one end of the limiting column 503 passes through the sealing block 501 and is installed inside the limiting hole 306.

[0028] A plurality of mounting holes 6 are formed on the outer surfaces of the first leaf 1 and the second leaf 2 .

[0029] An external thread 307 is provided on the outer surface of the rotating pin 3 , and a fixing block 7 is installed on the rotating pin 3 through the external thread 307 . The outer surface of the fixing block 7 is provided with anti-skid patterns.

[0030] The outer surfaces of the first leaf 1 and the second leaf 2 are both in contact with sealing rings 8 , one of the sealing rings 8 is installed on the lower surface of the connecting block 303 , and the other sealing ring 8 is installed on the upper surface of the fixing block 7 .

[0031] The sealing structure 5 also includes an abutment column 505 and a second spring 506 . The abutment column 505 and the second spring 506 are installed on the lower surface of the sealing block 501 . The abutment column 505 is installed inside the oil inlet hole 305 . The lower surface of the second spring 506 abuts against the inner bottom of the placement groove 304 .

[0032] The outer surfaces of the first leaf sheet 1 and the second leaf sheet 2 are both coated with a wear-resistant coating.

[0033] When in use, first install the first leaf sheet 1 and the second leaf sheet 2 with external objects respectively through the installation hole 6, then take out the ejector pin to squeeze the limit column 503, so that the limit column 503 pushes the slide plate 502 to move in the cavity, and at the same time the first spring 504 gradually contracts. When the outer surface of the limit column 503 is flush with the inner surface of the placement groove 304, the second spring 506 recovers its elasticity and pops the sealing block 501 out of the inside of the placement groove 304. At this time, lubricating oil can be injected into the inside of the placement groove 304, and the lubricating oil enters the inside of the oil storage tank 301 through the oil inlet hole 305, so that the oil absorbing sponge 4 is gradually soaked. When the oil absorbing sponge 4 is completely soaked, stop injecting lubricating oil, then take out the sealing block 501, align the abutting column 505 with the oil inlet hole 305, and then push the sealing block 501 downward, so that the limit column 503 abuts against the upper surface of the connecting block 303, and then take out the ejector pin to squeeze the limit column 503, so that the limit column 503 pushes The slide plate 502 moves in the cavity, and the first spring 504 gradually contracts. When the limit column 503 is flush with the outer surface of the sealing block 501, the sealing block 501 slides downward and is installed in the placement groove 304. When the sealing block 501 is installed, the limit column 503 is aligned with the limit hole 306. At this time, the first spring 504 restores its elasticity to push the slide plate 502 to reset, and at the same time, the limit column 503 is installed in the limit hole 306. Through the cooperation of the sealing block 501 and the abutment column 505, the oil inlet hole 305 and the placement groove 304 can be sealed to prevent dust and impurities from entering, thereby extending the service life of the oil absorption sponge 4. Lubricating oil can be injected into the oil storage tank 301 through the oil inlet hole 305. At the same time, through the cooperation of the oil absorption sponge 4 and the oil outlet hole 302, the first leaf 1 and the second leaf 2 can be lubricated to prevent the hinge from wearing after a long period of use, thereby extending the service life of the hinge.

[0034] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A circular hinge, comprising a first leaf (1), a second leaf (2) and a rotating pin (3), characterized in that: The first leaf (1) is rotatably connected to the second leaf (2) via a rotating pin (3); an oil storage groove (301) is provided on the upper surface of the rotating pin (3); a plurality of oil outlet holes (302) are provided on the outer surface of the rotating pin (3); an oil absorbing sponge (4) is installed inside the oil storage groove (301); a connecting block (303) is provided on the upper surface of the rotating pin (3); a placement groove (304) is provided on the upper surface of the connecting block (303); an oil inlet hole (305) is provided at the inner bottom of the placement groove (304); one end of the oil inlet hole (305) extends to the inside of the oil storage groove (301); a limiting hole (306) is provided on the outer surface of the connecting block (303); one end of the limiting hole (306) extends to the inside of the placement groove (304); a sealing structure (5) is installed inside the placement groove (304); The sealing structure (5) comprises a sealing block (501), a slide plate (502), a limiting column (503) and a first spring (504); a cavity is provided inside the sealing block (501); the slide plate (502) is slidably connected inside the cavity; one end of the first spring (504) is mounted on the inner surface of the cavity; the other end of the first spring (504) is mounted on the outer surface of the slide plate (502); a limiting column (503) is provided at one end of the slide plate (502) away from the first spring (504); one end of the limiting column (503) passes through the sealing block (501) and is mounted inside the limiting hole (306).

2. A circular hinge according to claim 1, characterized in that: The outer surfaces of the first leaf sheet (1) and the second leaf sheet (2) are both provided with a plurality of mounting holes (6).

3. A circular hinge according to claim 1, characterized in that: The outer surface of the rotating pin rod (3) is provided with an external thread (307), and a fixing block (7) is mounted on the rotating pin rod (3) via the external thread (307), and the outer surface of the fixing block (7) is provided with anti-slip patterns.

4. A circular hinge according to claim 1, characterized in that: The outer surfaces of the first sheet (1) and the second sheet (2) are both in contact with sealing rings (8), wherein one of the sealing rings (8) is mounted on the lower surface of the connecting block (303), and the other sealing ring (8) is mounted on the upper surface of the fixing block (7).

5. A circular hinge according to claim 1, characterized in that: The sealing structure (5) further comprises an abutment column (505) and a second spring (506). The abutment column (505) and the second spring (506) are installed on the lower surface of the sealing block (501). The abutment column (505) is installed inside the oil inlet hole (305), and the lower surface of the second spring (506) abuts against the inner bottom of the placement groove (304).

6. A circular hinge according to claim 1, characterized in that: The outer surfaces of the first sheet (1) and the second sheet (2) are both coated with a wear-resistant coating.

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