Hardware damping hinge

By designing the fixed and movable pivot structures of the metal damping hinge, and combining them with force springs and dampers, the problem of poor buffering effect of traditional hinges is solved, achieving smooth closure and reduced noise, while enhancing durability and ease of installation.

CN224173898UActive Publication Date: 2026-04-28GUANGZHOU KAILISI HARDWARE PROD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGZHOU KAILISI HARDWARE PROD CO LTD
Filing Date
2025-05-13
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

Traditional hinges lack effective cushioning and elasticity during use, which makes them prone to impact noise when opening and closing. Frequent hard impacts accelerate component wear, and existing improved hinges have complex structures, increasing installation difficulty and production costs.

Method used

A metal damping hinge was designed, which adopts a structure of fixed and movable pivots, combined with a force spring and a damper. Through the coordinated work of the force spring and the damper, it achieves slow closing, reduces rotation speed, and avoids impact noise. At the same time, the damper is built into a cylindrical cavity, making the structure simple and easy to install.

Benefits of technology

It achieves smooth closure of the connector, avoids impact noise and impact caused by rapid opening and closing, enhances the stability of the damping effect, reduces component wear, simplifies the installation process and reduces production costs.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224173898U_ABST
    Figure CN224173898U_ABST
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Abstract

The utility model relates to the technical field of hardware fittings, in particular to a hardware damping hinge which comprises a first hinge main body, mounting rings are arranged at the two ends of one side of the first hinge main body, a cylindrical cavity is formed between the two mounting rings, a second hinge main body is arranged on one side of the cylindrical cavity, and the second hinge main body is arranged on the other side of the second hinge main body. And a damping assembly is arranged between the mounting ring and the cylindrical cavity. When the hinge is opened, the fixed rotating shaft and the movable rotating shaft are closed, the stress application spring and the damper are completely unfolded, and when the hinge is closed, the fixed rotating shaft and the movable rotating shaft drive the movable rotating shaft to be vertically unfolded in the direction of an inner groove of the hinge body through rotation of the hinge body to compress the damper and the stress application spring to generate damper force, so that the product is slowly closed. Through cooperative work of the stress application spring and the damper, the stability of the damping effect is improved, the rotating speed is effectively reduced, impact caused by rapid opening and closing is avoided, stable closing of the connecting piece is achieved, and impact noise is avoided.
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Description

Technical Field

[0001] This utility model relates to the field of hardware accessories technology, specifically a hardware damping hinge. Background Technology

[0002] A hinge, commonly known as a "hing," is a mechanical device used to connect two objects and allow them to rotate relative to each other. It is widely used in doors, windows, furniture, automobiles, and other fields.

[0003] Traditional hinges typically rely on a rigid connection between a metal core and blades during use. Due to the lack of effective cushioning and elasticity, they are prone to impact noise when opening and closing. Frequent hard impacts also accelerate component wear and shorten service life. Some improved hinges have been optimized by adding rubber pads and spring structures, but these have complex structures, poor cushioning effects, increased installation difficulty, and higher production costs. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a metal damping hinge that has the advantages of simple structure and good damping effect, thus solving the problems of complex structure and poor damping effect of damping hinges.

[0005] This utility model discloses a metal damping hinge, comprising a first hinge body, with mounting rings at both ends on one side of the first hinge body, a cylindrical cavity between the two mounting rings, a second hinge body on one side of the cylindrical cavity, and a damping assembly between the mounting rings and the cylindrical cavity. The damping assembly includes a fixed rotating shaft located within the inner cavity of one mounting ring, a movable rotating shaft located outside the fixed rotating shaft, with one end of the movable rotating shaft extending into the inner cavity of the cylindrical cavity, a force-applying spring fixedly attached to one end of the fixed rotating shaft, and one end of the force-applying spring fixedly connected to the movable rotating shaft, a damper connected to one end of the movable rotating shaft, and the damper located within the inner cavity of the cylindrical cavity, with a fixed plug at one end of the damper located within the inner cavity of the other mounting ring. When open, the fixed and movable shafts close, and the force spring and damper fully extend. When closed, the fixed and movable shafts rotate through the hinge body, causing the movable shaft to extend vertically along the direction of the hinge body's inner groove, compressing the damper and force spring to generate damping force, causing the product to close slowly. Through the coordinated work of the force spring and damper, the stability of the damping effect is increased, effectively slowing down the rotation speed and avoiding impacts caused by rapid opening and closing. This achieves smooth closure of the connector and avoids impact noise. At the same time, because the damper is built into a cylindrical cavity, the structure is simple, easy to install, and has a small overall size, making it suitable for various connectors.

[0006] This utility model discloses a metal damping hinge, wherein both the surface of the first hinge body and the second hinge body are provided with mounting holes, and the number of mounting holes is multiple. By providing multiple mounting holes, it is convenient to install the first hinge body and the second hinge body, and at the same time, it increases the stability of the connection between the first hinge body and the second hinge body and the connector, and avoids the first hinge body and the second hinge body from loosening after long-term use.

[0007] This utility model discloses a metal damping hinge, wherein the damper is a hydraulic damper, and the damper piston rod is connected to the movable rotating shaft by a pin.

[0008] This utility model discloses a metal damping hinge, wherein the force-applying spring is a helical spring, and the preload of the force-applying spring is in the same direction as the closing direction.

[0009] This utility model discloses a metal damping hinge, wherein the first hinge body and the second hinge body are made of stainless steel or aluminum alloy, and their surfaces are anodized. By using stainless steel or aluminum alloy materials and anodizing the surfaces, the corrosion resistance of the first hinge body and the second hinge body is increased, thereby increasing their durability.

[0010] This utility model discloses a metal damping hinge, wherein the fixing plug has a sealing ring inside, and the sealing ring is made of rubber or silicone. By setting the sealing ring, the dustproof and leak-proof performance of the fixing plug can be increased, preventing dust and other substances from corroding the damper or causing leakage, thereby increasing the stability of the damper.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. When this utility model is opened, the fixed rotating shaft and the movable rotating shaft are closed, and the force spring and damper are fully extended. When closed, the fixed rotating shaft and the movable rotating shaft are driven by the rotation of the hinge body to extend the movable rotating shaft vertically in the direction of the inner groove of the hinge body, compressing the damper and the force spring, generating damping force, so that the product closes slowly. Through the coordinated work of the force spring and the damper, the stability of the damping effect is increased, effectively slowing down the rotation speed and avoiding the impact caused by rapid opening and closing. It not only achieves smooth closure of the connecting parts, but also avoids impact noise. At the same time, because the damper is built into the cylindrical cavity, the structure is simple, easy to install, and the overall size is small, and it can be applied to a variety of connecting parts.

[0013] 2. This utility model provides multiple mounting holes to facilitate the installation of the first hinge body and the second hinge body, while also increasing the stability of the connection between the first hinge body, the second hinge body and the connector, thus preventing the first hinge body and the second hinge body from becoming loose after long-term use.

[0014] By using stainless steel or aluminum alloy materials and anodizing the surface, the corrosion resistance of the first and second hinge bodies is increased, thereby increasing the durability of the first and second hinge bodies.

[0015] By setting a sealing ring, the dustproof and leakproof performance of the fixed plug can be increased, preventing dust and other substances from corroding the damper or causing leakage, thereby increasing the stability of the damper. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0018] Fig. 2 This is an exploded structural diagram of the present invention;

[0019] Fig. 3 This is a schematic diagram of the damping component structure of this utility model.

[0020] In the diagram: 1. First hinge body; 2. Mounting ring; 3. Cylindrical cavity; 4. Second hinge body; 5. Damping assembly; 501. Fixed pivot; 502. Movable pivot; 503. Force spring; 504. Damper; 505. Fixed plug; 6. Mounting hole. Detailed Implementation

[0021] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0022] Please see Figs. 1-3This utility model discloses a metal damping hinge, comprising a first hinge body 1, with mounting rings 2 at both ends of one side of the first hinge body 1, a cylindrical cavity 3 between the two mounting rings 2, a second hinge body 4 on one side of the cylindrical cavity 3, and a damping assembly 5 between the mounting rings 2 and the cylindrical cavity 3. The damping assembly 5 includes a fixed rotating shaft 501, which is disposed within the inner cavity of one of the mounting rings 2, and a movable rotating shaft is disposed on the outer side of the fixed rotating shaft 501. 502, and one end of the movable rotating shaft 502 extends into the inner cavity of the cylindrical cavity 3. One end of the fixed rotating shaft 501 is fixedly provided with a force-applying spring 503, and one end of the force-applying spring 503 is fixedly connected to the movable rotating shaft 502. One end of the movable rotating shaft 502 is connected to a damper 504, and the damper 504 is located in the inner cavity of the cylindrical cavity 3. One end of the damper 504 is provided with a fixed plug 505, and the fixed plug 505 is located in the inner cavity of another mounting ring 2. When open, the fixed pivot 501 and the movable pivot 502 are closed, and the force spring 503 and the damper 504 are fully extended. When closed, the fixed pivot 501 and the movable pivot 502 are driven by the rotation of the hinge body to extend the movable pivot 502 vertically in the direction of the inner groove of the hinge body, compressing the damper 504 and the force spring 503, generating a damping force, so that the product closes slowly. Through the coordinated work of the force spring 503 and the damper 504, the stability of the damping effect is increased, effectively slowing down the rotation speed and avoiding the impact caused by rapid opening and closing. This achieves smooth closure of the connector and avoids impact noise. At the same time, the damper 504 is built into the cylindrical cavity 3, which has a simple structure, is easy to install, and has a small overall size, making it suitable for a variety of connectors.

[0023] The surfaces of both the first hinge body 1 and the second hinge body 4 are provided with mounting holes 6, and there are multiple mounting holes 6. By providing multiple mounting holes 6, it is convenient to install the first hinge body 1 and the second hinge body 4, and at the same time, it increases the stability of the connection between the first hinge body 1 and the second hinge body 4 and the connector, and avoids the first hinge body 1 and the second hinge body 4 from loosening after long-term use.

[0024] The damper 504 is a hydraulic damper, and the piston rod of the damper 504 is connected to the movable shaft 502 by a pin.

[0025] The force-adjusting spring 503 is a helical spring, and the preload of the force-adjusting spring 503 is in the same direction as the closing direction.

[0026] The first hinge body 1 and the second hinge body 4 are made of stainless steel or aluminum alloy, and their surfaces are anodized. By using stainless steel or aluminum alloy and anodizing the surfaces, the corrosion resistance of the first hinge body 1 and the second hinge body 4 is increased, thereby increasing their durability.

[0027] The fixed plug 505 has an internal sealing ring made of rubber or silicone. This sealing ring enhances the dustproof and leak-proof performance of the fixed plug 505, preventing dust and other contaminants from corroding the damper 504 or causing leaks, thus increasing the stability of the damper 504.

[0028] When using this utility model: When opening, the fixed rotating shaft 501 and the movable rotating shaft 502 are closed, and the force spring 503 and the damper 504 are fully extended. When closing, the fixed rotating shaft 501 and the movable rotating shaft 502 are driven by the rotation of the hinge body to extend the movable rotating shaft 502 vertically in the direction of the inner groove of the hinge body, compressing the damper 504 and the force spring 503, generating a damping force, so that the product closes slowly. Through the coordinated work of the force spring 503 and the damper 504, the stability of the damping effect is increased, effectively slowing down the rotation speed and avoiding the impact caused by rapid opening and closing. This achieves smooth closing of the connector and avoids impact noise. At the same time, the damper 504 is built into the cylindrical cavity 3, which has a simple structure, is easy to install, and has a small overall size, making it suitable for various connectors.

[0029] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A metal damping hinge, comprising a first hinge body (1), characterized in that: The first hinge body (1) has mounting rings (2) at both ends on one side, and a cylindrical cavity (3) is provided between the two mounting rings (2). A second hinge body (4) is provided on one side of the cylindrical cavity (3). A damping assembly (5) is provided between the mounting rings (2) and the cylindrical cavity (3). The damping assembly (5) includes a fixed rotating shaft (501), which is located in the inner cavity of one mounting ring (2). A movable rotating shaft (502) is provided on the outer side of the fixed rotating shaft (501). One end of the shaft (502) extends into the inner cavity of the cylindrical cavity (3). One end of the fixed rotating shaft (501) is fixedly provided with a force-adding spring (503), and one end of the force-adding spring (503) is fixedly connected to the movable rotating shaft (502). One end of the movable rotating shaft (502) is connected to a damper (504), and the damper (504) is located in the inner cavity of the cylindrical cavity (3). One end of the damper (504) is provided with a fixed plug (505), and the fixed plug (505) is located in the inner cavity of another mounting ring (2).

2. The metal damping hinge according to claim 1, characterized in that: The first hinge body (1) and the second hinge body (4) are both provided with mounting holes (6), and there are multiple mounting holes (6).

3. The metal damping hinge according to claim 1, characterized in that: The damper (504) is a hydraulic damper, and the piston rod of the damper (504) is connected to the movable shaft (502) by a pin.

4. The metal damping hinge according to claim 1, characterized in that: The force-adding spring (503) is a helical spring, and the preload direction of the force-adding spring (503) is consistent with the closing direction.

5. A metal damping hinge according to claim 1, characterized in that: The first hinge body (1) and the second hinge body (4) are made of stainless steel or aluminum alloy and their surfaces are anodized.

6. A metal damping hinge according to claim 1, characterized in that: The fixed plug (505) has a sealing ring inside, and the sealing ring is made of rubber or silicone.