Lubricating sleeve and mute hinge

Abstract

The invention relates to a hardware door accessory, and discloses a lubricating sleeve and a mute hinge, the lubricating sleeve comprises a lubricating seat, a lubricating sleeve body, a lubricating sleeve body and a lubricating sleeve body, a lubricating ring arranged in the lubricating cavity is arranged at one end of the lubricating pipe, and the other end of the lubricating pipe extends out of the lubricating cavity; the lubricating piece is arranged in the lubricating cavity and abuts against one end of the lubricating pipe. The mute hinge comprises a left hinge piece and a right hinge piece which are hinged together through a shaft core, and further comprises the lubricating sleeve, the lubricating sleeve is arranged on the portion, between the left hinge piece and the right hinge piece, of the shaft core in a sleeving mode, and the other end of the lubricating pipe is embedded into the left hinge piece. When the hinge piece rotates, the lubricating ring and the lubricating piece rotate relatively, the function of a traditional metal bearing is replaced, the lubricating function can be provided, and the good mute effect is achieved.

Description

[0001] The present invention is a divisional application of a Chinese patent application filed with the China Patent Office on May 4, 2019, with application number 201910377230.2 and titled “A Silent Hinge”. Technical Field

[0002] The invention relates to the field of hardware accessories, in particular to a silent hinge. Background Art

[0003] The existing hinges are mainly composed of a shaft core, hinge pieces and bearings, and damping oil is added between the shaft core and the leaves. During the use of the hinges, after long-term friction and extrusion between the shaft core and the hinge pieces, the damping oil penetrates into the hinge surface through the hinge gap, causing black or yellow stains on the hinge surface, affecting the appearance quality of the product. After the damping oil leakage causes the oil volume to decrease, the lubrication effect between the shaft core and the hinge piece is reduced, and the wear between the metals increases, causing the hinge piece and the shaft core to deform, generating a large friction noise, and finally causing the hinge to fail to work normally, causing inconvenience to users. Summary of the invention

[0004] The present invention aims to overcome the above-mentioned defects of the existing hinges and provide a silent hinge.

[0005] The technical solution provided by the present invention is a silent hinge: comprising a left hinge piece, a right hinge piece, an axis core, two lubricating sleeves, two plastic sleeves and two decorative caps. A long column is provided in the middle of the left hinge piece, and a short column is provided at each end of the right hinge piece; the lubricating sleeve comprises a lubricating seat, a cover plate, a lubricating sheet and a lubricating tube; a lubricating cavity is provided in the lubricating seat, a lubricating ring is provided at one end of the lubricating tube, the lubricating sheet and the lubricating ring are placed in the lubricating cavity, the lubricating tube extends from one end of the lubricating cavity, and the cover plate is fixed to the other end of the lubricating cavity; the cover plate and the lubricating seat are formed by stamping sheet metal, and the lubricating sheet and the lubricating tube are made of highly wear-resistant composite materials with elasticity and self-lubrication; the long column and the two short columns are sleeved on the shaft core, and the long column is stuck between the two short columns, a lubricating sleeve is embedded between the long column and the short column, and the two lubricating tubes are respectively embedded at both ends of the long column, so as to fix the radial positions of the left hinge piece and the right hinge piece, and when the hinge piece rotates, the lubricating ring and the lubricating sheet produce relative radial rotation, replacing the function of traditional metal bearings, and can provide lubrication function, with better silent effect. The plastic sleeve is made of a highly wear-resistant composite material with elasticity and self-lubrication. A through hole is provided in the middle of the plastic sleeve, and a longitudinal through groove is provided on the side of the plastic sleeve. The shaft core passes through the through hole of the plastic sleeve. The plastic sleeve is embedded in the short bar of the right hinge piece, and an interference fit is adopted between the plastic sleeve and the short bar. When the hinge piece moves, the plastic sleeve bears radial pressure, and plays an elastic positioning and self-lubricating function between the shaft core and the short bar. The decorative cap is embedded in the end of the short bar at both ends of the right hinge piece, and an interference fit is adopted between the decorative cap and the short bar, which effectively prevents the decorative cap from falling off.

[0006] Through the above technical scheme, the silent hinge provided by the present invention is flexible in rotation, low in cost, avoids direct contact between hinge pieces, reduces the friction coefficient, achieves a better silent effect, and improves the quality of the hinge. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0008] Figure 1 It is a schematic diagram of the structure of the present invention in a decomposed state;

[0009] Figure 2 This is a schematic diagram of the structure of the lubricating sleeve of the present invention in a disassembled state;

[0010] Figure 3 It is a plane schematic diagram of the left hinge piece of the present invention;

[0011] Figure 4 It is a plan view of the right hinge piece of the present invention.

[0012] The numbers in the figure are as follows:

[0013] 1-left hinge, 11-long column;

[0014] 2-right hinge piece, 21-short bar;

[0015] 3- shaft core;

[0016] 4-lubricating sleeve, 41-lubricating seat, 411-lubricating cavity, 42-cover plate, 43-lubricating plate, 44-lubricating tube, 441-lubricating ring;

[0017] 5-plastic sleeve, 51-through hole, 52-through groove;

[0018] 6-Decorative hat. DETAILED DESCRIPTION

[0019] The present invention can be implemented in the following ways:

[0020] like Figures 1 to 4 As shown, a silent hinge provided by the present invention comprises a left hinge piece 1, a right hinge piece 2, an axis core 3, two lubricating sleeves 4, two plastic sleeves 5 and two decorative caps 6. A long column 11 is provided in the middle of the left hinge piece 1, and a short column 21 is provided at each end of the right hinge piece 2; the lubricating sleeve 4 comprises a lubricating seat 41, a cover piece 42, a lubricating sheet 43 and a lubricating tube 44; a lubricating cavity 411 is provided in the lubricating seat 41, a lubricating ring 441 is provided at one end of the lubricating tube 44, the lubricating sheet 43 and the lubricating ring 441 are placed in the lubricating cavity 411, the lubricating tube 44 extends from one end of the lubricating cavity 411, and the cover piece 42 is fixed to the other end of the lubricating cavity 411; the cover piece 42 and the lubricating seat 41 are formed by stamping of sheet metal, The lubricating sheet 43 and the lubricating tube 44 are made of a highly wear-resistant composite material with elasticity and self-lubricating properties; the long column 11 and the two short columns 21 are sleeved on the shaft core 3, and the long column 11 is stuck between the two short columns 21, and a lubricating sleeve 4 is embedded between the long column 11 and the short column 21, and the two lubricating tubes 44 are respectively embedded at both ends of the long column 11 to fix the radial position of the left hinge piece 1 and the right hinge piece 2. When the hinge piece rotates, the lubricating ring 441 and the lubricating sheet 43 produce relative radial rotation, replacing the function of the traditional metal bearing, and can provide lubrication function, with a better silent effect. The plastic sleeve 5 is made of a highly wear-resistant composite material with elasticity and self-lubrication. A through hole 51 is provided in the middle of the plastic sleeve 5, and a longitudinal through groove 52 is provided on the side of the plastic sleeve 5; the shaft core 3 is passed through the through hole 51 of the plastic sleeve 5; the plastic sleeve 5 is embedded in the short bar 21 of the right hinge piece 2, and an interference fit is adopted between the plastic sleeve 5 and the short bar 21. When the hinge piece moves, the plastic sleeve 5 bears radial pressure, and plays an elastic positioning and self-lubricating function between the shaft core 3 and the short bar 21; the decorative cap 6 is embedded in the end portions of the short bar 21 at both ends of the right hinge piece 2, and an interference fit is adopted between the decorative cap 6 and the short bar 21, which effectively prevents the decorative cap 6 from falling off.

[0021] Through the above technical scheme, the silent hinge provided by the present invention is flexible in rotation, low in cost, avoids direct contact between hinge pieces, reduces the friction coefficient, achieves a better silent effect, and improves the quality of the hinge.

Claims

1. A lubricating sleeve, applied between two leaves of a hinge, characterized in that: include: A lubrication seat, wherein a lubrication cavity is provided; a lubrication tube, one end of which is provided with a lubrication ring disposed in the lubrication cavity, and the other end of which extends out of the lubrication cavity; A lubricating sheet is arranged in the lubricating cavity and abuts against one end of the lubricating tube.

2. The lubricating sleeve according to claim 1, characterized in that: Also includes: The cover plate is arranged in the lubrication cavity and is located on a side of the lubrication plate away from the lubrication ring.

3. The lubricating sleeve according to claim 2, characterized in that: The cover plate and the lubrication seat are formed by stamping sheet metal.

4. The lubricating sleeve according to any one of claims 1 to 3, characterized in that: The lubricating sheet and the lubricating tube are made of a highly wear-resistant composite material with elasticity and self-lubrication.

5. A silent hinge, comprising a left hinge piece and a right hinge piece hinged together by an axis core, characterized in that: Also includes: The lubricating sleeve according to any one of claims 1 to 4, wherein the lubricating sleeve is sleeved on the shaft core between the left hinge piece and the right hinge piece, and the other end of the lubricating tube is embedded in the left hinge piece.

6. The silent hinge according to claim 5, characterized in that: The lubricating sleeve comprises a cover plate arranged in the lubricating cavity, and one end of the cover plate abuts against the right hinge plate.

7. The silent hinge according to claim 6, characterized in that: The left hinge piece is formed with a long column sleeved on the shaft core, and the other end of the lubrication tube is embedded in the long column; A short column sleeved on the shaft core is formed on the right hinge piece, and the other end of the cover piece abuts against the end surface of the short column.

8. The silent hinge according to claim 7, characterized in that: Also includes: The plastic sleeve is provided with a through hole in the middle and a longitudinal through groove on the side, is sleeved on the shaft core and embedded in the short column.

9. The silent hinge according to claim 7, characterized in that: Also includes: The decorative cap is embedded in the end of the short column away from the long column.

10. The silent hinge according to any one of claims 7 to 9, characterized in that: Two short bars are formed on the right hinge piece and are located at both ends of the long bar. The lubrication sleeves are arranged between the two ends of the long bar and the short bars.

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