Industrial plastic silent hinge

Abstract

The utility model relates to the hinge technology field, and discloses an industrial plastic silent hinge, including an outer leaf, an inner leaf, a sleeve, a center shaft and a cover, one end of each of the outer leaf and the inner leaf is provided with a connecting sleeve, the interior of the connecting sleeve is provided with a sleeve, the sleeve includes a fixed sleeve, a fixed ring and a convex block, the fixed sleeve is a single-sided closed cylinder, the fixed sleeve is provided inside the connecting sleeve, and the interior of the fixed sleeve is provided with a center shaft. The utility model can inject lubricating oil into the interior of the chamber through the oil filling hole, and at the same time, through the coordinated use of the oil storage sponge and the oil outlet hole, the sleeve can be lubricated to avoid the wear of the sleeve and the center shaft, thereby extending the service life of the hinge, and through the setting of the fixed sleeve, the gap between the connecting sleeve and the center shaft is offset, reducing the generation of abnormal noise, and at the same time, through the setting of the convex block, the fixed sleeve is interference-mounted inside the connecting sleeve, so that the connection between the sleeve and the connecting sleeve is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of hinges, in particular to an industrial plastic silent 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 "CN218438855U" discloses a silent hinge, which is mainly composed of inner pages, outer pages, a sleeve and a center shaft. There is a compensation gap between the sleeve and the shaft hole of this technical solution. The compensation gap can increase the avoidance space when the sleeve expands due to heat, so as to avoid the sleeve being squeezed toward the center shaft after thermal expansion, resulting in increased friction between the two and generating noise, thereby ensuring the silent effect of the silent hinge under the influence of temperature.

[0004] The silent hinge disclosed in the above document has the following defects: during the use of the silent hinge, after the sleeve and the center shaft are rubbed and squeezed for a long time, the lubricating oil will be reduced, which will increase the resistance to the rotation of the sleeve and the center shaft, aggravate the wear of the sleeve and the center shaft, and thus reduce the service life of the hinge.

[0005] It can be seen from this that the existing silent hinge does not have a structure for lubricating the shaft sleeve and the central shaft, and it is necessary to improve the existing shortcomings and provide an industrial plastic silent hinge. Utility Model Content

[0006] The purpose of the utility model is to provide an industrial plastic silent 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 an industrial plastic silent hinge, comprising an outer leaf sheet, an inner leaf sheet, a shaft sleeve, a central shaft and a cover, wherein one end of the outer leaf sheet and the inner leaf sheet are both provided with a connecting sleeve, the interior of the connecting sleeve is provided with a shaft sleeve, the shaft sleeve comprises a fixed sleeve, a fixed ring and a protrusion, the fixed sleeve is a single-sided closed cylinder, the fixed sleeve is provided inside the connecting sleeve, the interior of the fixed sleeve is provided with a central shaft, the central shaft comprises an axis body and a column, the outer surface of the axis body is provided with a column, the axis body is rotatably connected to the interior of the fixed sleeve, a chamber is provided inside the axis body, an oil filling hole is provided on the outer surface of the column, one end of the oil filling hole passes through the column and extends to the interior of the chamber, an oil storage sponge is provided inside the chamber, and a plurality of oil outlet holes are provided on the outside of the axis body.

[0009] Furthermore, a blocking block is installed inside the oil filling hole, and the oil filling hole can be covered by the blocking block, so that dust and moisture are not easy to enter the interior of the chamber, thereby achieving a better dust-proof effect.

[0010] Furthermore, a fixing ring is provided at one end of the fixing sleeve, one end of the fixing ring abuts against the outer surface of the connecting sleeve, and the other end of the fixing ring abuts against the outer surface of the shaft body.

[0011] Furthermore, a plurality of protrusions are provided on the outer surface of the fixing sleeve, and the protrusions are interference-fitted inside the fixing sleeve.

[0012] Furthermore, the outer surfaces of the outer sheet and the inner sheet are both provided with a plurality of mounting holes.

[0013] Furthermore, a sealing cover is installed at one end of the connecting sleeve, and the connecting sleeve can be covered by the sealing cover, so that dust and moisture are not easy to enter the connecting sleeve, thereby achieving a better dust-proof effect.

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

[0015] (1) The utility model can inject lubricating oil into the interior of the chamber through the oil filling hole. At the same time, the oil storage sponge and the oil outlet hole are used in combination to lubricate the shaft sleeve to avoid wear of the shaft sleeve and the center shaft, thereby extending the service life of the hinge. The setting of the fixed sleeve offsets the gap between the connecting sleeve and the center shaft, reducing the generation of abnormal noise. At the same time, the setting of the protrusion allows the fixed sleeve to be interference-fitted inside the connecting sleeve, making the connection between the shaft sleeve and the connecting sleeve more stable.

[0016] (2) The utility model can cover the connecting sleeve by providing a sealing cover, so that dust and moisture are not easy to enter the connecting sleeve, thereby achieving a good dustproof effect.

[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 outer page and the inner page are unfolded;

[0020] Figure 2 This is a schematic diagram of the structure of the utility model when the outer page and the inner page are folded;

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

[0022] Figure 4 This is a cross-sectional view of the overall structure of the utility model;

[0023] Figure 5 This is a cross-sectional view of the shaft sleeve and the central shaft structure of the utility model;

[0024] Figure 6 This is a schematic diagram of the shaft sleeve structure of the utility model;

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] In the figure: 1. outer page; 2. inner page; 3. bushing; 301. fixing sleeve; 302. fixing ring; 303. bump; 4. center axis; 401. shaft body; 40101. chamber; 402. column; 40201. oil filling hole; 5. cover; 6. connecting sleeve; 7. oil storage sponge; 8. blocking block; 9. mounting hole. DETAILED DESCRIPTION

[0027] 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.

[0028] See also Figure 1 - Figure 6As shown, the utility model is an industrial plastic silent hinge, comprising an outer leaf piece 1, an inner leaf piece 2, a sleeve 3, a central shaft 4 and a cover 5. A connecting sleeve 6 is installed at one end of the outer leaf piece 1 and the inner leaf piece 2. The sleeve 3 is arranged inside the connecting sleeve 6. The sleeve 3 comprises a fixed sleeve 301, a fixed ring 302 and a convex block 303. The fixed sleeve 301 is a single-sided closed cylinder. The fixed sleeve 301 is arranged inside the connecting sleeve 6. The central shaft 4 is arranged inside the fixed sleeve 301. 4 comprises a shaft body 401 and a column body 402. The column body 402 is installed on the outer surface of the shaft body 401. The shaft body 401 is rotatably connected to the inside of the fixed sleeve 301. A chamber 40101 is opened inside the shaft body 401. An oil injection hole 40201 is opened on the outer surface of the column body 402. One end of the oil injection hole 40201 penetrates the column body 402 and extends to the inside of the chamber 40101. An oil storage sponge 7 is installed inside the chamber 40101. A plurality of oil outlet holes are opened on the outside of the shaft body 401.

[0029] A blocking block 8 is installed inside the oil filling hole 40201. The blocking block 8 can cover the oil filling hole 40201, making it difficult for dust and moisture to enter the interior of the chamber 40101, thereby achieving a better dust-proof effect.

[0030] A fixing ring 302 is provided at one end of the fixing sleeve 301 . One end of the fixing ring 302 abuts against the outer surface of the connecting sleeve 6 , and the other end of the fixing ring 302 abuts against the outer surface of the shaft body 401 .

[0031] A plurality of protrusions 303 are provided on the outer surface of the fixing sleeve 301 , and the protrusions 303 are interference-fitted inside the fixing sleeve 301 .

[0032] A plurality of mounting holes 9 are formed on the outer surfaces of the outer sheet 1 and the inner sheet 2 .

[0033] One end of the connecting sleeve 6 is cooperated with a sealing cover 5, and the connecting sleeve 6 can be covered by the sealing cover 5, so that dust and moisture are not easy to enter the connecting sleeve 6, thereby achieving a better dustproof effect.

[0034] When in use, first install the outer page 1 and the inner page 2 with external objects respectively through the installation hole 9, and then take out the blocking block 8 from the inside of the oil filling hole 40201. At this time, the lubricating oil can be injected into the inside of the chamber 40101. The lubricating oil enters the inside of the chamber 40101 through the oil filling hole 40201, so that the oil storage sponge 7 is gradually soaked. When the oil storage sponge 7 is completely soaked, stop injecting the lubricating oil, and then install the blocking block 8 back into the inside of the oil filling hole 40201. The oil storage sponge 7 and the oil outlet hole are used in conjunction to lubricate the shaft sleeve 3. The sleeve 301 is provided to prevent the sleeve 3 from sliding and to avoid wear on the central shaft 4, thereby extending the service life of the hinge. During the rotation of the hinge, the gap between the connecting sleeve 6 and the central shaft 4 can be offset by the setting of the fixed sleeve 301, thereby reducing the generation of abnormal noise. At the same time, the setting of the protrusion 303 allows the fixed sleeve 301 to be interference-fitted inside the connecting sleeve 6, thereby making the connection between the sleeve 3 and the connecting sleeve 6 more stable. The connecting sleeve 6 can be covered by the provided cover 5, thereby preventing dust and moisture from entering the connecting sleeve 6, thereby achieving a better dustproof effect.

[0035] 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. An industrial plastic silent hinge, comprising an outer leaf (1), an inner leaf (2), a sleeve (3), a central shaft (4) and a cover (5), characterized in that: One end of each of the outer sheet (1) and the inner sheet (2) is provided with a connecting sleeve (6), and a shaft sleeve (3) is provided inside the connecting sleeve (6); The shaft sleeve (3) comprises a fixed sleeve (301), a fixed ring (302) and a convex block (303); the fixed sleeve (301) is a single-sided closed cylinder; the fixed sleeve (301) is arranged inside the connecting sleeve (6); and a central shaft (4) is arranged inside the fixed sleeve (301); The central shaft (4) comprises a shaft body (401) and a column (402); the column (402) is mounted on the outer surface of the shaft body (401); the shaft body (401) is rotatably connected to the interior of a fixed sleeve (301); a chamber (40101) is provided inside the shaft body (401); an oil injection hole (40201) is provided on the outer surface of the column (402); one end of the oil injection hole (40201) passes through the column (402) and extends to the interior of the chamber (40101); an oil storage sponge (7) is mounted inside the chamber (40101); and a plurality of oil outlet holes are provided on the outside of the shaft body (401).

2. The industrial plastic silent hinge according to claim 1, characterized in that: A blocking block (8) is installed in the interior of the oil filling hole (40201).

3. The industrial plastic silent hinge according to claim 1, characterized in that: A fixing ring (302) is provided at one end of the fixing sleeve (301), one end of the fixing ring (302) abuts against the outer surface of the connecting sleeve (6), and the other end of the fixing ring (302) abuts against the outer surface of the shaft body (401).

4. The industrial plastic silent hinge according to claim 1, characterized in that: The outer surface of the fixed sleeve (301) is provided with a plurality of protrusions (303), and the protrusions (303) are interference-fitted inside the fixed sleeve (301).

5. The industrial plastic silent hinge according to claim 1, characterized in that: The outer surfaces of the outer sheet (1) and the inner sheet (2) are both provided with a plurality of mounting holes (9).

6. The industrial plastic silent hinge according to claim 1, characterized in that: A sealing cover (5) is mounted on one end of the connecting sleeve (6).

Images