A door closing silent buffer hinge

Abstract

The utility model provides a kind of door closing mute buffer hinge, it is related to hinge technical field, the buffer hinge includes hinge cup, hinge seat and transmission assembly, transmission assembly is constituted by main hinge arm, vice hinge arm and triangular piece.Hinge cup is connected with main, vice hinge arm front end by U type needle, and vice hinge arm tail portion is equipped with buffer sliding slot, and it is linked with triangular piece by main support column, and triangular piece lower end is connected oil cylinder buffer part.Torsional spring part is installed in main hinge shaft, and two ends are respectively pressureed in triangular piece and main hinge arm.When door is closed, main support column slides along buffer sliding slot, and drives triangular piece to trigger oil cylinder buffer;Sliding slot corner design is realized deceleration by force decomposition, so that the front section of door closing process is fast, and the rear section is slow.The utility model realizes sectional speed control by optimizing sliding slot profile and mechanical transmission path, effectively reduces end impact noise, compact structure and high reliability, applicable to all kinds of mute buffer cabinet door scene.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, and in particular to a soft-close hinge that makes closing doors quiet. Background Technology

[0002] A hinge typically consists of a hinge cup fixed to the door panel, a hinge seat fixed to the cabinet, and a transmission component that opens and closes the hinge cup on the hinge seat. During use, a damper is installed on the hinge seat to achieve a cushioning effect during opening and closing, reduce noise, and protect the furniture. However, traditional hinges require a sufficient closing time, meaning the damper force cannot be too high. If the damper force is too low, the cushioning effect is weak, and a certain amount of impact force will still be generated, causing noise. Therefore, there is an urgent need to design a silent, quiet, and cushioned hinge for closing. Utility Model Content

[0003] The purpose of this invention is to provide a soft-close hinge that makes closing doors quiet, in order to solve the technical problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A silent door-closing buffer hinge includes a hinge cup, a hinge seat, and a transmission assembly. The transmission assembly includes a main hinge arm, a secondary hinge arm, and a triangular member. The hinge cup is connected to the front ends of the main hinge arm and the secondary hinge arm via U-shaped pins. The rear ends of the main hinge arm and the secondary hinge arm are connected to the front ends of the hinge seat via a main hinge shaft and a secondary hinge shaft, respectively. The tail end of the secondary hinge arm extends into the hinge seat and has a buffer groove. The buffer groove is connected to the front end of the triangular member via a main support column. The top end of the triangular member is connected to the hinge seat via a first coupling, and the lower end of the triangular member is connected to a hydraulic cylinder buffer section. A torsion spring is installed on the main hinge shaft. One end of the torsion spring has an elastic support foot that presses against the secondary support column of the secondary hinge arm, and the other end of the torsion spring has an elastic support foot that presses against the main hinge arm.

[0006] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0007] In one alternative: the hydraulic cylinder buffer section includes a piston rod and a buffer cylinder. The buffer cylinder is installed inside the hinge seat via a positioning pin. One end of the piston rod is inserted into the buffer cylinder, and the other end is connected to the lower end of the triangular piece via a second coupling.

[0008] In one alternative: the hinge seat has a fixed seat inside, the buffer cylinder is located inside the fixed seat, and the hinge seat has a vertical adjustment component for adjusting the vertical movement of the fixed seat relative to the buffer cylinder and a front-back adjustment component for adjusting the front-back movement of the fixed seat relative to the buffer cylinder.

[0009] In one alternative: the upper end of the up-down adjusting member has a thread and is connected to the top of the hinge seat; the lower end of the up-down adjusting member is engaged with the fixed seat; the upper end of the front-back adjusting member extends to the slide groove at the top of the hinge seat; and the lower end of the front-back adjusting member has a thread and is threaded to the fixed seat.

[0010] By adopting the above technical solution, this utility model has the following beneficial effects:

[0011] This utility model provides a silent door-closing buffer hinge. By designing a special angle and contour for the buffer slide of the secondary hinge arm, the closing process is divided into a normal speed buffer at the beginning and a slow speed buffer at the end, achieving a "fast at the beginning and slow at the end" speed curve, balancing efficiency and quietness. The main support column effectively reduces the driving force by decomposing the force direction at the corner of the slide, achieving further deceleration at the end and reducing the impact noise when closing the door. The linkage design between the torsion spring and the triangular component enhances the rebound stability, and the direct connection between the hydraulic cylinder buffer and the triangular component improves the force transmission efficiency and extends the service life. It is suitable for various cabinet doors, is easy to install, and has adjustable buffer performance to meet the needs of diverse usage scenarios. Attached Figure Description

[0012] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of the buffer hinge in one embodiment of the present invention.

[0014] Figure 2 This is a cross-sectional schematic diagram of a buffer hinge in one embodiment of the present invention.

[0015] Figure 3 This is a schematic diagram of the transmission component structure in one embodiment of the present invention.

[0016] Figure reference numerals: 1. Hinge cup; 2. Hinge seat; 3. Main hinge arm; 4. Secondary hinge arm; 5. Torsion spring; 6. Triangular piece; 7. Secondary hinge shaft; 8. Main support column; 9. First connecting shaft; 10. Secondary connecting shaft; 11. Piston rod; 12. Main hinge shaft; 13. Fixed seat; 14. Up-down adjusting piece; 15. Front-back adjusting piece; 16. Secondary support column; 17. Buffer cylinder; 18. U-shaped pin. Detailed Implementation

[0017] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] The left, right, up, and down positions of the various components shown in the attached diagram are just one arrangement method; the specific positions should be set according to specific needs.

[0019] In one embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, a silent door-closing buffer hinge includes a hinge cup 1, a hinge seat 2, and a transmission assembly. The transmission assembly includes a main hinge arm 3, a secondary hinge arm 4, and a triangular member 6. The hinge cup 1 is connected to the front ends of the main hinge arm 3 and the secondary hinge arm 4 via U-shaped pins 18. The rear ends of the main hinge arm 3 and the secondary hinge arm 4 are connected to the front ends of the hinge seat 2 via a main hinge shaft 12 and a secondary hinge shaft 7, respectively. The tail of the secondary hinge arm 4 extends into the hinge seat 2 and has a buffer groove. The buffer groove is connected to the front end of the triangular member 6 via a main support column 8. The top end of the triangular member 6 is connected to the hinge seat 1 via a first connecting shaft 9, and the lower end of the triangular member 6 is connected to the hydraulic cylinder buffer part. A torsion spring 5 is installed on the main hinge shaft 12. One end of the torsion spring 5 has an elastic support foot that presses against the secondary support column 16 of the secondary hinge arm 4, and the other end of the torsion spring 5 has an elastic support foot that presses against the main hinge arm 3.

[0020] In this embodiment of the invention, the front end of the triangular member 6 is connected to the buffer groove of the main support column 8 and the secondary hinge arm 4. When the hinge cup 1 is in closing motion, the front end of the triangular member 6 slides in the buffer groove of the secondary hinge arm 4 through the main support column 8, driving the rear end of the triangular member 6 to act on the hydraulic cylinder buffer part, which generates the buffer force when the hinge closes the door. According to mechanical analysis, the appropriate angle and shape of the buffer groove of the secondary hinge arm 4 are designed. When the main support column 8 slides to the corner of the buffer groove, the direction of the force is changed, decomposed into two components, and the driving force is reduced, thereby causing further deceleration. As a result, when the hinge cup 1 closes, it can ensure normal speed buffering at the beginning, while the last section of buffering speed is slower. The calculated angle profile of the groove is used to control the movement rate, so that when the hinge closes the door, the first section of closing speed is normal, and the second section of closing speed is slow, realizing the speed control of the hinge closing the door with a fast first section and a slow second section.

[0021] In one embodiment, such as Figure 1 , Figure 2 and Figure 3As shown, the hydraulic cylinder buffer section includes a piston rod 11 and a buffer cylinder 17. The buffer cylinder 17 is installed inside the hinge seat 2 via a positioning pin. One end of the piston rod 11 is inserted into the buffer cylinder 17, and the other end is connected to the lower end of the triangular piece 6 via a second connecting shaft 10. In this embodiment of the present invention, when the hinge cup 1 performs a closing motion, the front end of the triangular piece 6 slides in the buffer groove of the secondary hinge arm 4 via the main support column 8, which drives the rear end of the triangular piece 6 to move via the piston rod 11 connected by the second connecting shaft 10. By pulling the piston rod 11 of the hydraulic cylinder buffer cylinder 17, a buffering force is generated when the hinge closes the door.

[0022] In one embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, the hinge 2 is provided with a fixed seat 13 inside, and the buffer cylinder 17 is located inside the fixed seat 13. The hinge 2 is provided with an up-down adjusting member 14 for adjusting the up-down movement of the fixed seat 13 relative to the buffer cylinder 17 and a front-back adjusting member 15 for adjusting the front-back movement of the fixed seat 13 relative to the buffer cylinder 17. In this embodiment of the present invention, the up-down adjusting member 14 and the front-back adjusting member 15 adjust the height and position of the fixed seat 13, thereby adjusting the height and position of the hinge 2 relative to the buffer cylinder 17. The connection position between the piston rod 11 and the triangular member 6 changes, and the buffering force of the door closing by pulling the piston rod 11 of the hydraulic cylinder buffer cylinder 17 will change.

[0023] In one embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, the upper end of the up-down adjusting member 14 is threaded and connected to the top of the hinge seat 2, and the lower end of the up-down adjusting member 14 is engaged with the fixed seat 13. The upper end of the front-rear adjusting member 15 extends to the sliding groove at the top of the hinge seat 2, and the lower end of the front-rear adjusting member 15 is threaded and threaded to the fixed seat 13. In this embodiment of the present invention, both the up-down adjusting member 14 and the front-rear adjusting member 15 have cross grooves at their tops. By screwing the up-down adjusting member 14 and the front-rear adjusting member 15 with a screwdriver, the front-rear adjusting member 15 becomes loose from the top of the hinge seat 2 and moves within the sliding groove, thereby adjusting the position of the fixed seat 13. The up-down adjusting member 14 is threaded to the hinge seat 2, and its length screwed into the hinge seat 2 can be adjusted by screwing the up-down adjusting member 14, thereby adjusting the height of the fixed seat 13.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

Claims

1. A silent door-closing buffer hinge, comprising a hinge cup, a hinge seat, and a transmission assembly, characterized in that, The transmission assembly includes a main hinge arm, a secondary hinge arm, and a triangular member; The hinge cup is connected to the front ends of the main hinge arm and the secondary hinge arm respectively via U-shaped pins, and the rear ends of the main hinge arm and the secondary hinge arm are connected to the front ends of the hinge seat respectively via the main hinge shaft and the secondary hinge shaft. The tail of the secondary hinge arm extends into the hinge seat and has a buffer groove. The buffer groove is connected to the front end of the triangular piece through the main support column. The top end of the triangular piece is connected to the hinge seat through the first coupling shaft. The lower end of the triangular piece is connected to the oil cylinder buffer part. A torsion spring is installed on the main hinge shaft. One end of the torsion spring is supported by an elastic foot on the secondary support column of the secondary hinge arm, and the other end of the torsion spring is supported by an elastic foot on the main hinge arm.

2. The silent door-closing buffer hinge according to claim 1, characterized in that, The hydraulic cylinder buffer section includes a piston rod and a buffer cylinder. The buffer cylinder is installed inside the hinge seat through a positioning pin. One end of the piston rod is inserted into the buffer cylinder, and the other end is connected to the lower end of the triangular piece through a second coupling.

3. The silent door-closing buffer hinge according to claim 2, characterized in that, The hinge seat has a fixed seat inside, the buffer cylinder is located in the fixed seat, and the hinge seat is provided with an up-down adjusting component for adjusting the up-down movement of the fixed seat relative to the buffer cylinder and a back-and-forth adjusting component for adjusting the back-and-forth movement of the fixed seat relative to the buffer cylinder.

4. The silent door-closing buffer hinge according to claim 3, characterized in that, The upper end of the up-down adjusting member has a thread and is connected to the top of the hinge seat. The lower end of the up-down adjusting member is engaged with the fixed seat. The upper end of the front-back adjusting member extends to the slide groove at the top of the hinge seat. The lower end of the front-back adjusting member has a thread and is threaded to the fixed seat.

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