Buffering hinge

Abstract

The invention discloses a buffer hinge which comprises a fixed part, a rotating part, a connecting device and a buffer device, the fixed part and the rotating part are connected through the connecting device, the fixed part comprises a shell, a first rotating shaft and a second rotating shaft are arranged on the shell, the buffer device comprises a torsion spring, a buffer cylinder, a mounting seat and a sliding block, the torsion spring sleeves the first rotating shaft, and the buffer cylinder sleeves the mounting seat. The installation base is fixed in the shell, the sliding block is arranged on the installation base, one end of the buffering cylinder abuts against the sliding block, the other end of the buffering cylinder abuts against the torsion spring, the first rotating shaft and the second rotating shaft are sleeved with the connecting device, and the sliding block corresponds to the connecting device. The buffering effect on the connecting device can be achieved through the combined action of the torsion spring and the buffering cylinder. By arranging the torsion spring and the buffering cylinder, the buffering rod can act on the connecting device to play a corresponding buffering role, so that the single function of the torsion spring is avoided, the stability of the buffering effect is improved, and the service life of the torsion spring is prolonged.

Description

TECHNICAL FIELD

[0001] The present application belongs to a hinge, in particular to a buffer hinge. BACKGROUND

[0002] The hinge is mainly installed on the door and window, and the hinge is more installed on the cabinet, furniture door plate, in order to prevent the door plate from closing too fast, many existing hinges have a certain buffer function, which reduces the noise generated by the collision of the cabinet door when closing to a certain extent. Such as application No. 201920156072.3 discloses a door hinge structure with three-stage force, which plays a corresponding buffering effect on the hinge through the double-foot torsional spring, but only through the torsional spring for buffering, with the increase of the using time of the hinge, the torsional spring is prone to deformation and other phenomena, which affects the service life of the torsional spring and the buffering effect of the hinge. SUMMARY

[0003] The purpose of the present application is to provide a buffer hinge which can solve at least one of the above problems.

[0004] According to one aspect of the present application, 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 through the connecting device, the buffer device is arranged in the fixed part, the fixed part comprises a shell, the shell is provided with a first rotating shaft and a second rotating shaft, the buffer device comprises a torsional spring, a buffer cylinder, a mounting seat and a sliding block, the torsional spring is sleeved on the first rotating shaft, the mounting seat is fixed in the shell, the buffer cylinder is arranged in the mounting seat, the sliding block is arranged on the mounting seat, one end of the buffer cylinder abuts against the sliding block, and the other end abuts against the torsional spring, the connecting device is sleeved on the first rotating shaft and the second rotating shaft, the sliding block corresponds to the connecting device, the mounting seat is provided with a guide groove, the sliding block is U-shaped, the two sides of the sliding block are matched with the mounting seat, and the two sides of the sliding block are matched with the guide groove.

[0005] The beneficial effects of the present application are: the buffer device is provided with a torsional spring and a buffer cylinder, so that the buffering effect of the connecting device can be realized through the joint action of the torsional spring and the buffer cylinder, the buffering of the door and window when closing is realized, and the door and window are prevented from closing too fast. By providing the torsional spring and the buffer cylinder, the connecting device can be acted on by the buffer rod, thereby playing a corresponding buffering effect, thereby avoiding the single action of the torsional spring, improving the stability of the buffering effect, effectively distributing the buffering force, and being beneficial to improving the service life of the torsional spring; the guide groove is arranged on the mounting seat, so that the sliding block can move along the guide groove, which is beneficial to the stable movement of the sliding block.

[0006] In some embodiments, the connecting device comprises a first rotating block and a second rotating block, one end of the first rotating block is sleeved on the first rotating shaft, the other end is rotatably connected with the rotating part, one end of the second rotating block is sleeved on the second rotating shaft, and the other end is rotatably connected with the rotating part. Therefore, by providing the first rotating block and the second rotating block, the rotating part can be conveniently rotated relative to the fixed part.

[0007] In some embodiments, the buffer hinge further comprises a U-shaped shaft, the U-shaped shaft 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. Therefore, by providing the U-shaped shaft, the installation of the first rotating block and the second rotating block on the fixed part is facilitated, and the interaction between the two rotating blocks is facilitated.

[0008] In some embodiments, the two sides of the sliding block are sleeved on the outside of the mounting seat, the two sides of the sliding block are each provided with a folded edge outward, and the folded edge corresponds to the second rotating block. Therefore, by providing the folded edge, the second rotating block can be conveniently acted on by the folded edge, and the second rotating block can be driven to rotate correspondingly by the folded edge.

[0009] In some embodiments, one end of the second rotating block is provided with an open slot, and the open slot is correspondingly arranged with the folded edge. Therefore, by providing the open slot, the folded edge can act on the side wall of the open slot.

[0010] In some embodiments, the buffer hinge further comprises a third rotating shaft, the third rotating shaft is sleeved on the second rotating block, one end of the torsion spring is provided with a horizontal edge, and the horizontal edge is located above the third rotating shaft. Therefore, by providing the third rotating shaft, the horizontal edge of the torsion spring can be pressed on the third rotating shaft, that is, the second rotating block is acted on by the third rotating shaft, and the torsion spring can conveniently provide a buffer force for the second rotating block.

[0011] In some embodiments, the second rotating block is provided with a bending part, and the bending part is located between the third rotating shaft and the U-shaped shaft. Therefore, by providing the bending part, when the bending part is rotated to the horizontal edge, the horizontal edge is pressed on the bending part, and the second rotating block is further provided with a buffer force.

[0012] In some embodiments, the first rotating block is provided with a groove below, and the other end of the second rotating block is located below the groove. Therefore, when the other end of the second rotating block is rotated to the groove, the second rotating block is limited by the groove, the rotating speed of the second rotating block is slowed down, and a further buffering effect is achieved.

[0013] In some embodiments, the buffer cylinder is a hydraulic cylinder, the cylinder body of the hydraulic cylinder penetrates the mounting seat and abuts against the torsion spring, and the piston rod of the hydraulic cylinder abuts against the sliding block. Therefore, the corresponding installation requirements of the buffer cylinder are met.

[0014] In some embodiments, the buffer cylinder is a hydraulic cylinder, a piston rod of the hydraulic cylinder is in abutment with the torsion spring, the inner side of the sliding block is provided with elastic sheets, the cylinder body of the hydraulic cylinder is located on the mounting seat and clamped between the elastic sheets on both sides of the sliding block. Thus, the corresponding installation requirements of the buffer cylinder are conveniently met. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of a buffer hinge of the present application in an open state;

[0016] Figure 2 is a structural schematic view of a buffer hinge of the present application in a closed state;

[0017] Figure 3 is a structural schematic view of a connecting device and a buffer device in cooperation and in an open state in an embodiment of a buffer hinge of the present application;

[0018] Figure 4 is a structural schematic view of part of the structure in Figure 3

[0019] Figure 5 is a structural schematic view of a connecting device and a buffer device in cooperation and in a closed state in an embodiment of a buffer hinge of the present application;

[0020] Figure 6 is a structural schematic view of part of the structure in Figure 5

[0021] Figure 7 is a structural schematic view of a connecting device and a buffer device in cooperation and in an open state in another embodiment of a buffer hinge of the present application;

[0022] Figure 8 is a structural schematic view of a connecting device and a buffer device in cooperation and in a closed state in another embodiment of a buffer hinge of the present application;

[0023] Figure 9 is a structural schematic view from another perspective in Figure 8

[0024] Figure 10 is a structural schematic view of a sliding block and a mounting seat in cooperation in an embodiment of a buffer hinge of the present application;

[0025] Figure 11 is a structural schematic view of a mounting seat in another embodiment of a buffer hinge of the present application. DETAILED DESCRIPTION

[0026] The present application will be further described in detail below with reference to the accompanying drawings.

[0027] Reference will now be made in detail to the present application, examples of which are illustrated in the accompanying drawings.​​​Figures 1-11 The application discloses a buffer hinge, which comprises 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 through the connecting device 3, the buffer device 4 is arranged in the fixed part 1, the fixed part 1 comprises a shell 11, a first rotating shaft 5 and a second rotating shaft 6 are arranged on the shell 11, the buffer device 4 comprises a torsion spring 41, a buffer cylinder 42, a mounting seat 43 and a sliding block 44, the torsion spring 41 is sleeved on the first rotating shaft 5, the mounting seat 43 is fixed in the shell 11, the buffer cylinder 42 is arranged in the mounting seat 43, the sliding block 44 is arranged on the mounting seat 43, one end of the buffer cylinder 42 is in abutment with the sliding block 44, and the other end of the buffer cylinder 42 is in abutment with the torsion spring 41, the connecting device 3 is sleeved on the first rotating shaft 5 and the second rotating shaft 6, the sliding block 44 corresponds to the connecting device 3, the mounting seat 43 is provided with a guide groove 432, the sliding block 44 is in a U shape, the two sides of the sliding block 44 are matched with the mounting seat 43, and the two sides of the sliding block 44 are matched with the guide groove 432. When the sliding block 44 moves under the action of the buffer cylinder 42, the two sides of the sliding block 44 can move along the guide groove 432, and the stability of the movement of the sliding block 44 can be improved.

[0028] 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 actual use scenes, and different weight requirements of cabinet doors can be met; the rotating part 2 can rotate relative to the fixed part 1 through the connecting device 3.

[0029] The connecting device 3 comprises 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, the other end of the first rotating block 31 is rotationally connected with the rotating part 2, one end of the second rotating block 32 is sleeved on the second rotating shaft 6, and the other end of the second rotating block 32 is rotationally connected with 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.

[0030] The buffer hinge further comprises a U-shaped shaft 7, the U-shaped shaft 7 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. Through the U-shaped shaft 7, the rotating part 2 is facilitated to rotate, and the opening and closing of a door leaf and the like structure are facilitated to be realized; meanwhile, through the U-shaped shaft 7, the first rotating block 31 and the second rotating block 32 are facilitated to be linked.

[0031] The two sides of the sliding block 44 are sleeved on the outer side of the mounting seat 43, and the two sides of the sliding block 44 are both provided with folded edges 441 outward, the folded edges 441 correspond to the second rotating block 32.

[0032] The second rotating block 32 is provided with an open slot 321 at one end, and the open slot 321 is arranged corresponding to the folded edge 441, that is, the folded edge 441 can act on the side wall of the open slot 321. Through the action of the folded edge 441 and the open slot 321, the sliding block 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.

[0033] The buffering hinge further comprises 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.

[0034] The second rotating block 32 is formed with a bent portion 322 between the third rotating shaft 8 and the U-shaped shaft 7.

[0035] The first rotating block 31 is provided with a groove 311 below, and the other end of the second rotating block 32 is located below the groove 311.

[0036] The buffering hinge is used on a cabinet door. When the cabinet door needs to be closed, the horizontal edge 411 of the torsion spring 41 is pressed above the bent portion 322 when the cabinet door is in an open state, so that the rotation speed of the second rotating block 32 is slowed down. With the rotation of the second rotating block 32, the bent portion 322 rotates downward and separates from the horizontal edge 411, so that the horizontal edge 411 is pressed on the third rotating shaft 8. Since the second rotating block 32 is sleeved on the third rotating shaft 8, when the force of the torsion spring is pressed on the third rotating shaft 8 through the horizontal edge 411, the rotation speed of the second rotating block 32 can be slowed down, further playing a buffering role, thereby achieving a door closing buffering effect.

[0037] When the cabinet door is in the closing process, the first rotating block 31 and the second rotating block 32 rotate, and when the open slot 321 rotates to the folded edge 441, the folded edge 441 interacts with one side wall of the open slot 321. With the rotation of the second rotating block 32, the open slot 321 rotates to the folded edge 441, and the folded edge 441 acts on the buffering cylinder 42 through the sliding block 44. The buffering cylinder 42 reacts on the sliding block 44, so that the rotation speed of the second rotating block 32 is further slowed down, achieving the purpose of door closing buffering. Therefore, through the torsion spring 41 and the buffering cylinder 42, the door closing of the cabinet door can be buffered, avoiding too large closing speed.

[0038] Conversely, when the cabinet door is opened, when the open 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 open slot 321. At this time, the piston rod of the buffering rod 42 is extended, and the sliding block 44 can accelerate the rotation of the second rotating block 32, thereby improving the opening speed.

[0039] When the cabinet door is opened, when the door leaf is opened to the maximum opening angle, when the other end of the second rotating block 32 rotates to the lower groove 311 of the first rotating block 31, the second rotating block 32 can be limited and the door leaf is opened to the full opening position.

[0040] 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 seat 43 and abuts against the torsion spring 41. The piston rod of the hydraulic cylinder abuts against the slider 44. In this embodiment, because the cylinder body of the hydraulic cylinder is larger than the piston rod, the third rotating shaft 8 is a rivet structure to ensure that the mounting seat 43 does not affect the installation of the third rotating shaft 8. 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, ensuring proper installation of the third rotating shaft 8.

[0041] The mounting seat 43 is fixed to the housing 11 through the mounting shaft 9. Both ends of the mounting shaft 9 are fixedly sleeved on the housing 11. The slider 44 is U-shaped. Both sides of the slider 44 are located on the outside of the mounting seat 43, which facilitates the slider 44 to slide along the outer wall of the mounting seat 43. At the same time, it is convenient for the piston rod of the buffer cylinder 42 to abut against the bottom of the slider 44, and the slider 44 is driven to move by the extension and contraction of the piston rod of the buffer cylinder 42.

[0042] 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 seat 43 and is clamped between the spring pieces 442 on both sides of the slider 44. The spring piece 442 is formed by stamping the side wall of the slider 44 inward.

[0043] In this embodiment, the mounting seat 43 is fixed to the housing 11 through the mounting shaft 9, and both ends of the mounting shaft 9 are fixedly sleeved on the housing 11. The slider 44 is U-shaped, and both sides of the slider 44 are located on the inner side of the mounting seat 43, which facilitates the slider 44 to slide along the inner side wall of the mounting seat 43. At the same time, it is convenient for the cylinder body of the buffer cylinder 42 to abut against the bottom of the slider 44, and the slider 44 is driven to move by the extension and contraction of the piston rod of the buffer cylinder 42.

[0044] Among them, a limiting edge 431 is formed on the mounting seat 43, and the limiting edge 431 can abut against the fold 441 to limit the fold edge, prevent the slider 44 from detaching from the mounting seat 43, and ensure the cooperation between the slider 44 and the mounting seat 43.

[0045] An arc-shaped groove is formed on the top of the mounting seat 43, which facilitates the cooperation between the cylinder body of the buffer cylinder 42 and the arc-shaped groove and is located on the arc-shaped groove. A spring sheet 442 is arranged, which facilitates the fixation of the cylinder body of the buffer cylinder 42 on the sliding block 44. Therefore, when the piston rod of the buffer cylinder 42 is stretched or retracted, the cylinder body of the buffer cylinder 42 can move synchronously with the sliding block, so that the sliding block acts on the open groove 321 through the folding edge 441, i.e. acts on the second rotating block 32.

[0046] The above merely describes the preferred embodiments of the present application, and it should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept, and these all belong to the protection scope of the present application.

Claims

1. Buffer hinge, characterized in that, The invention comprises a fixed part (1), a rotating part (2), a connecting device (3) and a buffer device (4), wherein the fixed part (1) and the rotating part (2) are connected via the connecting device (3), the buffer device (4) is arranged in the fixed part (1), the fixed part (1) comprises a shell (11), a first rotating shaft (5) and a second rotating shaft (6) are arranged on the shell (11), the buffer device (4) comprises a torsion spring (41), a buffer cylinder (42), a mounting seat (43) and a slider (44), the torsion spring (41) is sleeved on the first rotating shaft (5), the mounting seat (43) is fixed in the shell (11), The buffer cylinder (42) is arranged in the mounting seat (43), the slider (44) is arranged on the mounting seat (43), one end of the buffer cylinder (42) is in contact with the slider (44), and the other end is in contact with 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), the mounting seat (43) is provided with a guide groove (432), the slider (44) is U-shaped, both sides of the slider (44) are matched with the mounting seat (43), and both sides of the slider (44) are matched with the guide groove (432).

2. The buffer hinge according to claim 1, characterized in that: The connecting device (3) comprises 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), the U-shaped shaft (7) 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).

4. The buffer hinge according to claim 3, characterized in that: Both sides of the slider (44) are sleeved on the outside of the mounting seat (43), and both sides of the slider (44) are provided with outwardly folded edges (441), and the folded edges (441) correspond to the second rotating block (32).

5. The buffer hinge according to claim 4, characterized in that: An open slot (321) is provided at one end of the second rotating block (32), and the open slot (321) is arranged corresponding to 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), and the horizontal edge (411) 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 bending portion (322), and the bending portion (322) 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: A groove (311) is provided below the first rotating block (31), 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 penetrates 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 is in contact with the torsion spring (41), a spring sheet (442) is provided on the inner side of the slider (44), and the cylinder body of the hydraulic cylinder is located on the mounting seat (43) and clamped between the spring sheets (442) on both sides of the slider (44).

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