A type of furniture cabinet using a two-stage force-reducing hinge

Abstract

This utility model relates to the field of hinge technology, specifically to a two-stage force-buffered hinge for furniture cabinets. This hinge achieves two-stage motion control through the synergistic action of a torsion spring and a damping cylinder. When the cabinet door is opened, the torsion spring accumulates energy while the damping cylinder provides initial buffer resistance. When a specific angle is reached, the damping cylinder automatically switches to progressive strong damping. During the closing process, the torsion spring releases energy to assist in resetting. The damping system offsets the impact force in stages, enabling the cabinet door to achieve stepless hovering at any position, avoiding the sudden opening and closing phenomenon of traditional hinges, significantly reducing cabinet collision noise. The rigid connection between the fixed side plate and the hinge seat ensures the overall load-bearing strength. The rubber gasket continuously absorbs vibration energy to prevent screws from loosening. The linkage structure between the main hinge arm and the inner rocker arm maintains precise motion trajectory. The sliding cooperation between the connecting block and the moving block eliminates mechanical clearance. The fixed shaft maintains the axial stability of the damping assembly.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, and in particular to a two-stage force-buffered hinge for furniture cabinets. Background Technology

[0002] Furniture cabinets, especially wardrobes, cupboards, and bookcases with doors, directly impact user experience and product lifespan due to the smoothness, safety, and quietness of frequent door opening and closing. A key component for achieving these functions is the soft-close hinge. The core function of a soft-close hinge is to absorb the kinetic energy generated during door opening and closing through a built-in damping mechanism, significantly reducing noise and impact from the door colliding with the cabinet frame at the closing end. This not only improves the quietness and comfort of the home environment but also effectively prevents deformation or damage to the door due to violent impacts. It also greatly reduces the risk of pinching injuries to users (especially children's fingers) from rapidly closing doors, extending the overall lifespan of the furniture. Therefore, hinges with excellent soft-close performance have become standard components in modern mid-to-high-end furniture products, crucial for improving furniture quality and user satisfaction.

[0003] Traditional soft-close hinges often employ a single-stage force buffering design, which maintains a constant buffering force throughout the opening and closing process. This design results in cabinet doors feeling heavy due to excessive damping force during the initial opening phase, while insufficient buffering at the closing end produces impact noise. The single-stage force structure is difficult to adapt to the buffering needs of cabinet doors of different weights, and after long-term use, damping attenuation or torsion spring fatigue can easily occur, affecting the user experience and furniture lifespan. These problems have prompted the industry to upgrade to two-stage force buffering technology. Utility Model Content

[0004] The purpose of this utility model is to provide a two-stage force-buffered hinge for furniture cabinets, which solves the problem that traditional one-stage force-buffered hinges are prone to insufficient buffering and impact on the cabinet.

[0005] To achieve the above objectives, this utility model provides a two-stage force-buffered hinge for furniture cabinets, including a hinge base, a connecting arm fixedly mounted on the left end of the hinge base, a hinge cup movably mounted on the left side of the connecting arm, two symmetrical first through holes at the upper end of the hinge cup, the connecting arm and the hinge cup being connected by a main hinge arm, and fixed side plates fixedly mounted at both ends of the hinge base, with a second through hole at the upper end of the fixed side plate. The hinge base serves as the core load-bearing frame, providing overall support; the connecting arm enables dynamic connection between the cabinet and the hinge; the hinge cup is responsible for directly fixing to the cabinet door and transmitting rotational force; the first through holes form a pivoting channel between the hinge cup and the connecting arm; the main hinge arm bears the main torque transmission and controls the opening and closing angle; and the fixed side plates enhance the lateral stability of the hinge.

[0006] The main hinge arm has an internal rocker arm that moves within it. A torsion spring is fixedly installed at the lower end of the internal rocker arm. The internal rocker arm serves as a medium for converting the force of the torsion spring, and the torsion spring stores and releases mechanical energy to achieve automatic rebound.

[0007] A pin is fixedly installed between the inner rocker arm and the hinge seat, and a connecting block is fixedly installed at the right end of the inner rocker arm. The pin limits the movement trajectory of the inner rocker arm and maintains the structural integrity, while the connecting block transmits the movement of the inner rocker arm to the damping system.

[0008] The connecting block has a movable block fixedly installed at its right end, and a damping cylinder is fixedly installed at its right end. The movable block slides linearly on the fixed shaft to trigger a change in damping, and the damping cylinder provides adjustable two-stage buffer resistance.

[0009] The connecting block and the movable block are connected by a fixed shaft, and the damping cylinder is connected to the inner wall of the hinge seat through a fixed seat. The fixed shaft maintains the axial stability of the movable part, and the fixed seat ensures the rigid connection between the damping cylinder and the hinge seat.

[0010] Among them, the lower ends of the first through hole and the second through hole are fixedly provided with washers. The washers are made of rubber and absorb vibration through elastic deformation to prevent the threads from loosening.

[0011] This hinge achieves two-stage motion control through the synergistic action of a torsion spring and a damping cylinder. When opening the cabinet door, the torsion spring accumulates energy while the damping cylinder provides initial buffer resistance. Once a specific angle is reached, the damping cylinder automatically switches to progressive strong damping. During closing, the torsion spring releases energy to assist in resetting. The damping system counteracts impact forces in stages, allowing the cabinet door to hover seamlessly at any position, avoiding the sudden opening and closing phenomenon of traditional hinges and significantly reducing cabinet collision noise. The rigid connection between the fixed side panel and the hinge seat ensures overall load-bearing strength, while rubber washers continuously absorb vibration energy to prevent screws from loosening. The main hinge arm and... The linkage structure of the inner rocker arm maintains precise motion trajectory, the sliding fit between the connecting block and the moving block eliminates mechanical backlash, the fixed shaft maintains the axial stability of the damping component, and the entire mechanism can maintain smoothness during long-term high-frequency use, avoiding jamming or offset. The torsion spring and pin adopt a detachable assembly for easy elastic adjustment, the damping cylinder can be quickly replaced through an independent fixed seat, the separate design of the connecting arm and hinge cup supports the maintenance of local parts, and all moving parts adopt an open structure for easy lubrication and maintenance. This modular layout greatly reduces the later maintenance cost and extends the overall service life of the hinge. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0013] Figure 1This is a schematic diagram of the overall structure of the two-stage force-buffered hinge for the furniture cabinet according to an embodiment of this utility model.

[0014] Figure 2 This is a schematic diagram of the bottom structure of the two-stage force-buffered hinge for the furniture cabinet according to an embodiment of this utility model.

[0015] Figure 3 This is a schematic diagram of the two-stage force-buffered hinge closure structure according to an embodiment of the present invention.

[0016] Figure 4 This is an embodiment of the present utility model. Figure 2 A magnified view of A in the middle.

[0017] 1. Hinge seat, 2. Connecting arm, 3. Hinge cup, 4. First through hole, 5. Main hinge arm, 6. Fixed side plate, 7. Second through hole, 8. Inner rocker arm, 9. Torsion spring, 10. Pin, 11. Connecting block, 12. Movable block, 13. Damping cylinder, 14. Fixed shaft, 15. Fixed seat, 16. Washer. Detailed Implementation

[0018] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0019] Please see Figures 1-4 A two-stage force-bearing hinge for a furniture cabinet includes a hinge base 1. A connecting arm 2 is fixedly mounted on the left end of the hinge base 1. A hinge cup 3 is movably mounted on the left side of the connecting arm 2. The upper end of the hinge cup 3 has two symmetrical first through holes 4. The connecting arm 2 and the hinge cup 3 are connected by a main hinge arm 5. Fixed side plates 6 are fixedly mounted on both ends of the hinge base 1. The upper end of the fixed side plates 6 has a second through hole 7. The hinge base 1 serves as the main load-bearing structure supporting the entire hinge system. The connecting arm 2 connects the hinge base 1 to the cabinet door to transmit power. The hinge cup 3 forms a rotating pair with the connecting arm 2 through the first through holes 4. The main hinge arm 5 serves as the core transmission component to control the opening and closing angle range. The fixed side plates... 6. Enhance the connection strength between the hinge and the cabinet. The second through hole 7 provides the installation positioning reference for the fixed side plate 6. During the opening process, the user applies external force to pull the door, the hinge cup 3 moves, the connecting arm 2 rotates, the main hinge arm 5 drives the inner rocker arm 8 to swing, the inner rocker arm 8 compresses the torsion spring 9 to store elastic potential energy. When the door opening angle reaches the preset value, the inner rocker arm 8 pushes the movable block 12 through the connecting block 11. The movable block 12 drives the damping cylinder 13 to start working, providing the first stage of buffer force, slowing down the movement speed, and ensuring that the door opens smoothly. At the same time, the pin 10 fixes the relative position of the inner rocker arm 8 and the hinge seat 1. The fixed shaft 14 connects the connecting block 11 and the movable block 12, allowing flexible rotation.

[0020] Please see Figures 3-4An inner rocker arm 8 is movably mounted inside the main hinge arm 5. A torsion spring 9 is fixedly mounted at the lower end of the inner rocker arm 8. A pin 10 is fixedly mounted between the inner rocker arm 8 and the hinge seat 1. A connecting block 11 is fixedly mounted at the right end of the inner rocker arm 8. The inner rocker arm 8 converts the elastic force of the torsion spring 9 into mechanical action. The torsion spring 9 stores and releases energy to achieve an automatic reset function. The pin 10 restricts the movement trajectory of the inner rocker arm 8 and maintains structural stability. The connecting block 11 converts the swing of the inner rocker arm 8 into linear motion. The fixed seat 15 fixes the damping cylinder 13 inside the hinge seat 1. During the closing process, the user releases external force, and the torsion spring 9 releases the stored elastic potential energy, pushing the inner rocker arm 8 to rotate. The inner rocker arm 8 drives the main hinge arm 5 to move in the opposite direction, causing the hinge cup 3 to drive the door to close. At this time, the damping cylinder 13 provides a second stage of buffering force, gradually absorbing the closing energy and preventing the door from quickly colliding with the cabinet, thus achieving a slow and gentle closing.

[0021] Please see Figures 2-4 A movable block 12 is fixedly installed at the right end of the connecting block 11, and a damping cylinder 13 is fixedly installed at the right end of the movable block 12. The connecting block 11 and the movable block 12 are connected by a fixed shaft 14. The damping cylinder 13 is connected to the inner wall of the hinge seat 1 through a fixed seat 15. Washers 16, made of rubber, are fixedly installed at the lower ends of the first through hole 4 and the second through hole 7. Under the guidance of the fixed shaft 14, the movable block 12 pushes the piston rod of the damping cylinder 13, and the damping cylinder 13 generates a two-stage buffering effect through hydraulic resistance. As a result, the fixed shaft 14 ensures the linear motion accuracy of the movable block 12, the fixed seat 15 fixes the damping cylinder 13 inside the hinge seat 1, and the washer 16 prevents the threads of the first through hole 4 and the second through hole 7 from loosening through elastic deformation. During the entire door opening and closing cycle, the washer 16 is placed at the lower end of the first through hole 4 and the second through hole 7. Utilizing the properties of rubber material, it provides a fastening effect during motion vibration, preventing screws from loosening and parts from shaking, ensuring the long-term stable operation of the hinge. All parts work together to form a two-stage force buffer mechanism.

[0022] Working principle: During the opening process, the user applies external force to pull the door, the hinge cup 3 moves, the connecting arm 2 rotates, the main hinge arm 5 drives the inner rocker arm 8 to swing, the inner rocker arm 8 compresses the torsion spring 9 to store elastic potential energy. When the door opening angle reaches the preset value, the inner rocker arm 8 pushes the movable block 12 through the connecting block 11. The movable block 12 drives the damping cylinder 13 to start working, providing the first stage of buffer force to slow down the movement speed and ensure that the door opens smoothly. At the same time, the pin 10 fixes the relative position of the inner rocker arm 8 and the hinge seat 1. The fixed shaft 14 connects the connecting block 11 and the movable block 12, allowing flexible rotation. The fixed seat 15 fixes the damping cylinder 13 inside the hinge seat 1. During the closing process... During the process, the user releases external force, and the torsion spring 9 releases its stored elastic potential energy, pushing the inner rocker arm 8 to rotate. The inner rocker arm 8 drives the main hinge arm 5 to move in the opposite direction, causing the hinge cup 3 to close the door. At this time, the damping cylinder 13 provides a second stage of buffering force, gradually absorbing the closing energy and preventing the door from rapidly colliding with the cabinet, thus achieving a slow and gentle closing. Throughout the entire door opening and closing cycle, the washer 16 is placed at the lower end of the first through hole 4 and the second through hole 7. Utilizing the properties of rubber, it provides a fastening effect during movement and vibration, preventing screws from loosening and parts from shaking, ensuring the long-term stable operation of the hinge. All parts work together to form a two-stage force buffering mechanism, improving the safety and comfort of using the furniture.

[0023] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A two-stage force buffering hinge for a furniture cabinet body, comprising a hinge seat (1), characterized in that, A connecting arm (2) is fixedly provided at the left end of the hinge base (1), and a hinge cup (3) is movably provided on the left side of the connecting arm (2). Two first through holes (4) are symmetrically provided at the upper end of the hinge cup (3). The connecting arm (2) and the hinge cup (3) are connected by a main hinge arm (5). Fixed side plates (6) are fixedly provided at both ends of the hinge base (1), and a second through hole (7) is provided at the upper end of the fixed side plate (6).

2. The two-stage force buffering hinge for a furniture cabinet body according to claim 1, characterized in that, The main hinge arm (5) is internally provided with an inner rocker arm (8), and a torsion spring (9) is fixedly provided at the lower end of the inner rocker arm (8).

3. The two-stage force buffering hinge for a furniture cabinet body according to claim 2, characterized in that, A pin (10) is fixedly provided between the inner rocker arm (8) and the hinge seat (1), and a connecting block (11) is fixedly provided at the right end of the inner rocker arm (8).

4. The two-stage force buffering hinge for a furniture cabinet body according to claim 3, characterized in that, A movable block (12) is fixedly provided at the right end of the connecting block (11), and a damping cylinder (13) is fixedly provided at the right end of the movable block (12).

5. The two-stage force buffering hinge for a furniture cabinet body according to claim 4, characterized in that, The connecting block (11) and the movable block (12) are connected by a fixed shaft (14), and the damping cylinder (13) is connected to the inner wall of the hinge seat (1) through a fixed seat (15).

6. The two-stage force buffering hinge for a furniture cabinet body according to claim 1, characterized in that, Washers (16) are fixedly provided at the lower ends of the first through hole (4) and the second through hole (7), and the washers (16) are made of rubber.

Images