Damping hinge

Abstract

The utility model discloses a kind of buffer hinges, including fixed part, rotating part, connecting device and buffer device, fixed part and rotating part are connected by connecting device, fixed part includes shell, first pivot and second pivot are equipped on shell, buffer device includes torsion spring, buffer cylinder, mounting seat and slider, torsion spring is sleeved on first pivot, mounting seat is fixed in shell, slider is located on mounting seat, one end of buffer cylinder and slider abut, the other end and torsion spring abut, connecting device is sleeved on first pivot and second pivot, slider and connecting device correspond. Can be through the joint action of torsion spring and buffer cylinder, realize the buffering effect of connecting device. By being provided with torsion spring and buffer cylinder, by buffer rod can act on connecting device, play corresponding buffering effect, to avoid the single action of torsion spring, improve the stability of buffering effect, conducive to improving the service life of torsion spring.

Description

Technical Field

[0001] This utility model relates to a hinge, and more particularly to a buffer hinge. Background Technology

[0002] Hinges are mainly installed on doors and windows, and even more so on cabinet and furniture doors. To prevent doors from closing too quickly, many existing hinges have a certain buffering function, which reduces the noise generated by the door colliding with the cabinet body when closing. For example, application number 201920156072.3 discloses a door hinge structure with three-stage force, which uses double-foot torsion springs to provide a corresponding buffering effect. However, relying solely on torsion springs for buffering means that as the hinge is used over time, the torsion springs are prone to deformation, affecting their lifespan and the buffering effect of the hinge. Utility Model Content

[0003] The purpose of this invention is to provide a buffer hinge that can solve at least one of the above problems.

[0004] According to one aspect of the present invention, a buffer hinge is provided, comprising a fixed part, a rotating part, a connecting device, and a buffer device. The fixed part and the rotating part are connected by the connecting device. The buffer device is disposed within the fixed part. The fixed part includes a housing, on which a first rotating shaft and a second rotating shaft are provided. The buffer device includes a torsion spring, a buffer cylinder, a mounting base, and a slider. The torsion spring is sleeved on the first rotating shaft. The mounting base is fixed within the housing. The buffer cylinder is disposed within the mounting base. The slider is disposed on the mounting base. One end of the buffer cylinder abuts against the slider, and the other end abuts against the torsion spring. The connecting device is sleeved on the first rotating shaft and the second rotating shaft, and the slider corresponds to the connecting device.

[0005] The beneficial effects of this utility model are as follows: The buffer device incorporates a torsion spring and a buffer cylinder. Therefore, the combined action of the torsion spring and the buffer cylinder achieves a buffering effect on the connecting device, thus buffering the closing of doors and windows and preventing them from closing too quickly. By incorporating the torsion spring and buffer cylinder, the buffer rod can act on the connecting device, providing a corresponding buffering effect. This avoids the torsion spring acting alone, improves the stability of the buffering effect, effectively distributes the buffering force, and helps extend the service life of the torsion spring.

[0006] In some embodiments, the connecting device includes a first rotating block and a second rotating block. One end of the first rotating block is sleeved on a first rotating shaft, and the other end is rotatably connected to the rotating part. One end of the second rotating block is sleeved on a second rotating shaft, and the other end is rotatably connected to the rotating part. Thus, by providing the first rotating block and the second rotating block, the rotating part can be easily rotated relative to the fixed part.

[0007] In some embodiments, the buffer hinge further includes a U-shaped shaft, which is sleeved on the rotating part. The other end of the first rotating block is sleeved on one side of the U-shaped shaft, and the other end of the second rotating block is sleeved on the other side of the U-shaped shaft. Thus, by providing the U-shaped shaft, it is convenient to install the first and second rotating blocks on the fixed part, and it is also convenient for the interaction between the two rotating blocks.

[0008] In some embodiments, the slider is fitted onto the outside of the mounting base on both sides, and each side of the slider has an outwardly folded edge, which corresponds to the second rotating block. Thus, by providing the folded edge, it is convenient to act on the second rotating block through the folded edge, thereby driving the second rotating block to rotate accordingly.

[0009] In some embodiments, one end of the second rotating block is provided with an opening groove, which corresponds to the folded edge. Thus, by providing the opening groove, the folded edge can easily act on the sidewall of the opening groove.

[0010] In some embodiments, the buffer hinge further includes a third pivot, which is sleeved on the second rotating block. One end of the torsion spring has a horizontal edge, which is located above the third pivot. Thus, by providing the third pivot, the horizontal edge of the torsion spring can be pressed against the third pivot, that is, the torsion spring acts on the second rotating block through the third pivot, so that the torsion spring can provide a buffering force for the second rotating block.

[0011] In some embodiments, the second rotating block is provided with a bent portion located between the third rotating shaft and the U-shaped shaft. Thus, by providing the bent portion, when the bent portion rotates to the horizontal edge, the horizontal edge presses against the bent portion, further providing a buffering force for the second rotating block.

[0012] In some embodiments, a groove is provided below the first rotating block, and the other end of the second rotating block is located below the groove. Thus, when the other end of the second rotating block rotates to the groove, the groove limits the rotation speed of the second rotating block, thereby further buffering it.

[0013] In some embodiments, the buffer cylinder is a hydraulic cylinder, with its cylinder body passing through the mounting base and abutting against a torsion spring, and its piston rod abutting against a slider. This satisfies the corresponding installation requirements of the buffer cylinder.

[0014] In some embodiments, the buffer cylinder is a hydraulic cylinder, with its piston rod abutting against a torsion spring. A spring plate is provided on the inner side of the slider, and the cylinder body is located on a mounting base and clamped between the spring plates on both sides of the slider. This facilitates meeting the corresponding installation requirements of the buffer cylinder. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the structure of a buffer hinge in the open state according to this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of a buffer hinge in the closed state according to this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of a buffer hinge according to one embodiment of the present invention, in which the connecting device and the buffer device cooperate and are in the open state;

[0018] Figure 4 yes Figure 3 A schematic diagram of the middle section structure;

[0019] Figure 5 This is a schematic diagram of the structure of a buffer hinge according to one embodiment of the present invention, in which the connecting device and the buffer device cooperate and are in a closed state;

[0020] Figure 6 yes Figure 5 A schematic diagram of the middle section structure;

[0021] Figure 7 This is a schematic diagram of the structure of a buffer hinge according to another embodiment of the present invention, in which the connecting device and the buffer device cooperate and are in the open state;

[0022] Figure 8 This is a schematic diagram of the structure of a buffer hinge according to another embodiment of the present invention, in which the connecting device and the buffer device cooperate and are in the closed state;

[0023] Figure 9 yes Figure 8 A structural diagram from another perspective. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] Reference Figures 1-9 A buffer hinge includes a fixed part 1, a rotating part 2, a connecting device 3, and a buffer device 4. The fixed part 1 and the rotating part 2 are connected by the connecting device 3. The buffer device 4 is disposed inside the fixed part 1. The fixed part 1 includes a housing 11, on which a first rotating shaft 5 and a second rotating shaft 6 are mounted. The buffer device 4 includes a torsion spring 41, a buffer cylinder 42, a mounting base 43, and a slider 44. The torsion spring 41 is sleeved on the first rotating shaft 5. The mounting base 43 is fixed inside the housing 11. The buffer cylinder 42 is disposed inside the mounting base 43. The slider 44 is disposed on the mounting base 43. One end of the buffer cylinder 42 abuts against the slider 44, and the other end abuts against the torsion spring 41. The connecting device 3 is sleeved on the first rotating shaft 5 and the second rotating shaft 6. The slider 44 corresponds to the connecting device 3.

[0026] In actual use, the buffer cylinder 42 can be a hydraulic cylinder or a pneumatic cylinder. Different types of buffer cylinders can be replaced according to the actual use scenario to meet the different weight requirements of the cabinet door; the rotating part 2 can rotate relative to the fixed part 1 through the connecting device 3.

[0027] The connecting device 3 includes a first rotating block 31 and a second rotating block 32. One end of the first rotating block 31 is sleeved on the first rotating shaft 5, and the other end is rotatably connected to the rotating part 2. One end of the second rotating block 32 is sleeved on the second rotating shaft 6, and the other end is rotatably connected to the rotating part 2. The first rotating block 31 is located above the second rotating block 32. When the rotating part 2 rotates, the first rotating block 31 can rotate around the first rotating shaft 5, and the second rotating block 32 can rotate around the second rotating shaft 6.

[0028] The buffer hinge of this utility model also includes a U-shaped shaft 7, which is sleeved on the rotating part 2. The other end of the first rotating block 31 is sleeved on one side of the U-shaped shaft 7, and the other end of the second rotating block 32 is sleeved on the other side of the U-shaped shaft 7. The U-shaped shaft 7 facilitates the rotation of the rotating part 2, which is beneficial for opening and closing structures such as door panels; at the same time, the U-shaped shaft 7 facilitates the linkage between the first rotating block 31 and the second rotating block 32.

[0029] The two sides of the slider 44 are fitted onto the outside of the mounting base 43. Both sides of the slider 44 are provided with outward folded edges 441, which correspond to the second rotating block 32.

[0030] The second rotating block 32 has an opening groove 321 at one end, and the opening groove 321 is correspondingly arranged with the folded edge 441. That is, the folded edge 441 can act on the side wall of the opening groove 321. Through the action of the folded edge 441 and the opening groove 321, the slider 44 acts on the second rotating block 32, which can slow down the rotation of the second rotating block 32, thereby achieving a buffering effect.

[0031] The buffer hinge of this utility model also includes a third rotating shaft 8, which is sleeved on the second rotating block 32. One end of the torsion spring 41 is provided with a horizontal edge 411, which is located above the third rotating shaft 8.

[0032] The second rotating block 32 has a bent portion 322 formed on it, and the bent portion 322 is located between the third rotating shaft 8 and the U-shaped shaft 7.

[0033] The first rotating block 31 has a groove 311 below it, and the other end of the second rotating block 32 is located below the groove 311.

[0034] This utility model's buffer hinge is used on cabinet doors. When the cabinet door needs to be closed, in the open state, the horizontal edge 411 of the torsion spring 41 presses against the upper part of the bend 322, slowing down the rotation speed of the second rotating block 32. As the second rotating block 32 rotates, the bend 322 rotates downwards and separates from the horizontal edge 411, causing the horizontal edge 411 to press against the third rotating shaft 8. Since the second rotating block 32 is fitted onto the third rotating shaft 8, when the force of the torsion spring presses against the third rotating shaft 8 through the horizontal edge 411, it can slow down the rotation speed of the second rotating block 32, further providing a buffering effect, thereby achieving a door-closing buffering effect.

[0035] During the closing process of the cabinet door, due to the rotation of the first rotating block 31 and the second rotating block 32, when the opening groove 321 rotates to the folded edge 441, the folded edge 441 interacts with one side wall of the opening groove 321. As the second rotating block 32 rotates, the opening groove 321 rotates onto the folded edge 441. The folded edge 441 acts on the buffer cylinder 42 through the slider 44, and the buffer cylinder 42 reacts on the slider 44, further slowing down the rotation speed of the second rotating block 32, thus achieving the purpose of buffering the closing. Therefore, the torsion spring 41 and the buffer cylinder 42 can buffer the closing of the cabinet door, preventing excessive closing speed.

[0036] Conversely, when the cabinet door is opened, when the opening slot 321 of the second rotating block 32 rotates to the folded edge 441, the folded edge 441 acts on the other side wall of the opening slot 321. At this time, the piston rod of the buffer rod 42 extends, and the second rotating block 32 can be accelerated through the slider 44, thereby increasing the door opening speed.

[0037] When the cabinet door is opened, when the door is opened to its widest angle, the other end of the second rotating block 32 rotates to the groove 311 below the first rotating block 31, which can limit the second rotating block 32 and open the door to the correct position.

[0038] like Figures 3-6 As shown, in one embodiment, the buffer cylinder 42 is a hydraulic cylinder. The cylinder body of the hydraulic cylinder passes through the mounting base 43 and abuts against the torsion spring 41. The piston rod of the hydraulic cylinder abuts against the slider 44. In this embodiment, since the cylinder body of the hydraulic cylinder is larger than the piston rod, in order to ensure that the mounting base 43 does not affect the installation of the third rotating shaft 8, the third rotating shaft 8 is a riveted structure. The third rotating shaft 8 is installed on one side of the second rotating block 32 and does not extend to the other side of the second rotating block 32, thus ensuring the normal installation of the third rotating shaft 8.

[0039] Mounting base 43 is mounted and fixed on housing 11 via mounting shaft 9. Both ends of mounting shaft 9 are fixedly sleeved on housing 11. Slider 44 is U-shaped, with both sides of slider 44 located on the outside of mounting base 43, which facilitates slider 44 sliding along the outer side wall of mounting base 43. At the same time, it facilitates the piston rod of buffer cylinder 42 to abut against the bottom of slider 44, and the extension and retraction of piston rod of buffer cylinder 42 drives slider 44 to move.

[0040] like Figures 7-9 As shown, in another embodiment, the buffer cylinder 42 is a hydraulic cylinder, the piston rod of the hydraulic cylinder abuts against the torsion spring 41, and a spring piece 442 is formed on the inner side of the slider 44. The cylinder body of the hydraulic cylinder is located on the mounting base 43 and is clamped between the spring pieces 442 on both sides of the slider 44. The spring piece 442 is formed by stamping and recessing the side wall of the slider 44 inward.

[0041] In this embodiment, the mounting base 43 is mounted and fixed on the housing 11 via the mounting shaft 9. Both ends of the mounting shaft 9 are fixedly sleeved on the housing 11. The slider 44 is U-shaped, with both sides of the slider 44 located inside the mounting base 43, which facilitates the slider 44 to slide along the inner sidewall of the mounting base 43. At the same time, it facilitates the contact between the cylinder body of the buffer cylinder 42 and the bottom of the slider 44, and the slider 44 is moved by the extension and retraction of the piston rod of the buffer cylinder 42.

[0042] Among them, a limiting edge 431 is formed on the mounting base 43. The limiting edge 431 can abut against the fold 441 to limit the fold edge, prevent the slider 44 from disengaging from the mounting base 43, and ensure the cooperation between the slider 44 and the mounting base 43.

[0043] An arc-shaped groove is formed on the top of the mounting base 43 to facilitate the mating of the cylinder body of the buffer cylinder 42 with the arc-shaped groove and to position it on the arc-shaped groove; by providing a spring piece 442, it is convenient to fix the cylinder body of the buffer cylinder 42 on the slider 44. Therefore, when the piston rod of the buffer cylinder 42 extends or retracts, the cylinder body of the buffer cylinder 42 can move synchronously with the slider, so that the slider acts on the opening groove 321 through the folded edge 441, that is, acts on the second rotating block 32.

[0044] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A buffer hinge, characterized in that, It includes a fixed part (1), a rotating part (2), a connecting device (3), and a buffer device (4). The fixed part (1) and the rotating part (2) are connected by the connecting device (3). The buffer device (4) is located inside the fixed part (1). The fixed part (1) includes a housing (11). The housing (11) is provided with a first rotating shaft (5) and a second rotating shaft (6). The buffer device (4) includes a torsion spring (41), a buffer cylinder (42), a mounting base (43), and a slider (44). A torsion spring (41) is sleeved on the first rotating shaft (5), the mounting base (43) is fixed inside the housing (11), the buffer cylinder (42) is located inside the mounting base (43), the slider (44) is located on the mounting base (43), one end of the buffer cylinder (42) abuts against the slider (44), and the other end abuts against the torsion spring (41), the connecting device (3) is sleeved on the first rotating shaft (5) and the second rotating shaft (6), and the slider (44) corresponds to the connecting device (3).

2. The buffer hinge according to claim 1, characterized in that, The connecting device (3) includes a first rotating block (31) and a second rotating block (32). One end of the first rotating block (31) is sleeved on the first rotating shaft (5), and the other end is rotatably connected to the rotating part (2). One end of the second rotating block (32) is sleeved on the second rotating shaft (6), and the other end is rotatably connected to the rotating part (2).

3. The buffer hinge according to claim 2, characterized in that, It also includes a U-shaped shaft (7), which is sleeved on the rotating part (2), with the other end of the first rotating block (31) sleeved on one side of the U-shaped shaft (7) and the other end of the second rotating block (32) sleeved on the other side of the U-shaped shaft (7).

4. The buffer hinge according to claim 3, characterized in that, The slider (44) is fitted on both sides of the mounting base (43). Both sides of the slider (44) are provided with outward folded edges (441), which correspond to the second rotating block (32).

5. The buffer hinge according to claim 4, characterized in that, The second rotating block (32) has an opening groove (321) at one end, and the opening groove (321) is correspondingly provided with the folded edge (441).

6. The buffer hinge according to claim 5, characterized in that, It also includes a third rotating shaft (8), which is sleeved on the second rotating block (32). One end of the torsion spring (41) is provided with a horizontal edge (411), which is located above the third rotating shaft (8).

7. The buffer hinge according to claim 6, characterized in that, The second rotating block (32) is provided with a bent part (322), which is located between the third rotating shaft (8) and the U-shaped shaft (7).

8. The buffer hinge according to claim 7, characterized in that, The first rotating block (31) has a groove (311) below it, and the other end of the second rotating block (32) is located below the groove (311).

9. The buffer hinge according to any one of claims 1 to 8, characterized in that, The buffer cylinder (42) is a hydraulic cylinder. The cylinder body of the hydraulic cylinder passes through the mounting seat (43) and abuts against the torsion spring (41). The piston rod of the hydraulic cylinder abuts against the slider (44).

10. The buffer hinge according to any one of claims 1 to 8, characterized in that, The buffer cylinder (42) is a hydraulic cylinder. The piston rod of the hydraulic cylinder abuts against the torsion spring (41). The inner side of the slider (44) is provided with a spring piece (442). The cylinder body of the hydraulic cylinder is located on the mounting base (43) and is clamped between the spring pieces (442) on both sides of the slider (44).

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