Hidden spring buffering hinge

Abstract

The utility model discloses a spring buffering hidden hinge which comprises a door frame hinge, a door leaf hinge and a rotating arm assembly, one side of the rotating arm assembly is hinged to a sliding groove in the door leaf hinge through a rotating shaft, the other side of the rotating arm assembly is hinged to a second sliding groove in the door frame hinge through a second rotating shaft, and the door leaf hinge is provided with a buffering assembly. The buffer assembly comprises a sleeve, a buffer, a nut, a spring and a screw rod, the buffer, the nut and the spring are arranged in the sleeve, one end of the screw rod penetrates through the nut and abuts against a push rod of the buffer, the other end of the screw rod penetrates through the rotating shaft, the spring is arranged on the outer side of the screw rod in a sleeving mode, and a second nut and a second spring are arranged in the screw rod; when the door is completely closed by 10-15 degrees through the buffer assembly of the hinge, the end portion of the screw abuts against the push rod of the buffer, and due to the fact that the push rod of the buffer can be rapidly compressed, the other end of the screw moves in the shaft hole of the rotating shaft till the door leaf is completely closed, and rapid door closing is completed.

Description

Technical Field

[0001] The utility model relates to the field of hinges, in particular to a spring buffer hidden hinge. Background Art

[0002] The hinge is a component installed between the door leaf and the door frame. It bears the weight and axial force of the door leaf. The function of the hinge is to ensure the flexible rotation of the door leaf during opening and closing, and to prevent the door leaf from falling off.

[0003] The existing hinges do not have a buffer structure for closing the door leaf, so if the existing door leaf is closed with too much force, the door leaf and the hinge may be damaged or deformed, and collision noise may be generated between the door leaf and the door frame. Therefore, the hinges between the existing door leaf and the door frame are easily damaged and have a short service life. Utility Model Content

[0004] The utility model solves the problem that the existing hinges are easily damaged and have a short service life.

[0005] The technical solution adopted by the utility model is: a spring buffer hidden hinge, including a door frame hinge, a door leaf hinge and a swing arm assembly, one side of the swing arm assembly is hinged to a slide groove in the door leaf hinge through a rotating shaft, and the other side is hinged to a second slide groove in the door frame hinge through a second rotating shaft, the door leaf hinge is provided with a buffer assembly, the buffer assembly includes a sleeve, a buffer, a nut, a spring and a screw, the buffer, the nut and the spring are arranged in the sleeve, one end of the screw passes through the nut and abuts against a push rod of the buffer, the other end of the screw passes through the rotating shaft, the spring is sleeved on the outside of the screw, the spring is arranged between the nut and the door leaf hinge, a second nut and a second spring are provided in the screw, one end of the second spring abuts against the second nut and the other end abuts against the rotating shaft.

[0006] Furthermore, fixing seats are provided on both sides of the door frame hinge, and both sides of the door frame hinge are arranged in the fixing seats. Adjustment screws are connected to the two fixing seats, and the other ends of the adjustment screws are screwed and connected to the door frame hinge.

[0007] Furthermore, the door frame hinge is screwed to the fixing seat.

[0008] Compared with the prior art, the beneficial effect of the utility model is that when the buffer assembly of the hinge is 10-15 degrees away from fully closing the door, the end of the screw rod presses against the push rod of the buffer, and since the push rod of the buffer can be quickly compressed, the other end of the screw rod moves in the axial hole in the rotating shaft. At this time, the second spring is compressed, and the contracted second spring automatically resets the screw rod through its own elastic force until the door leaf is fully closed to complete the rapid closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1It is the front view of the utility model;

[0010] Figure 2 It is an exploded view of the utility model;

[0011] Figure 3 It is a cross-sectional view of the utility model;

[0012] Figure 4 The utility model is a usage state diagram of the door frame hinge being installed with the door frame and the door leaf hinge being installed with the door leaf.

[0013] Figure numerals: door frame hinge 10; door leaf hinge 20; swing arm assembly 30; rotating shaft 31; slide slot 21; second rotating shaft 32; second slide slot 11; buffer assembly 40; sleeve 41; buffer 42; nut 43; spring 44; screw 45; push rod 421; second nut 451; second spring 452; fixing seat 50; adjusting screw 51; screw 52. DETAILED DESCRIPTION

[0014] like Figures 1 to 4 The present invention discloses a spring-buffered concealed hinge, comprising a door frame hinge 10, a door leaf hinge 20 and a pivot arm assembly 30. One side of the pivot arm assembly 30 is hinged to a slide groove 21 in the door leaf hinge 20 via a pivot shaft 31, and the other side of the pivot arm assembly 30 is hinged to a second slide groove 11 in the door frame hinge 10 via a second pivot shaft 32. When in use, the door frame hinge 10 is fixed to the door frame via fixing screws, and the door leaf hinge 20 is fixed to the door leaf via fixing screws. The pivot shaft 31 moves in the slide groove 21 of the door leaf hinge 20, and the second pivot shaft 32 moves in the second slide groove 11 of the door frame hinge 10, so that the door frame and the door leaf can be opened or closed by the hinge.

[0015] A buffer assembly 40 is provided on one side of the door hinge 20, and the buffer assembly 40 includes a sleeve 41, a buffer 42, a nut 43, a spring 44 and a screw 45. The buffer 42, the nut 43 and the spring 44 are arranged in the sleeve 41, one end of the screw 45 passes through the nut 43 and abuts against the push rod 421 of the buffer 42, and the other end of the screw 45 passes through the rotating shaft 31 of the door hinge 20. The spring 44 is sleeved on the outside of the screw 45, and the spring 44 is arranged between the nut 43 and the door hinge 20. A second nut 451 and a second spring 452 are provided in the screw 45, and one end of the second spring 452 abuts against the second nut 451 and the other end abuts against the rotating shaft 31.

[0016] When in use, the buffer assembly 40 is arranged in the door leaf. When the door leaf is pushed to open, the screw 45 moves in the slide groove 21 in the door hinge 20 through the rotating shaft 31, and the spring 44 is compressed. When the external force is removed, the compressed spring 44 pushes the door leaf to close automatically and quickly through its own elastic force. When the door is 10-15 degrees away from being fully closed, the end of the screw 45 presses against the push rod 421 of the buffer 42. Since the push rod 421 of the buffer 42 cannot be compressed quickly, the other end of the screw 45 moves in the axial hole in the rotating shaft 31. At this time, the second spring 452 is compressed, and the contracted second spring 452 automatically resets the screw 45 through its own elastic force until the door leaf is fully closed and the door is quickly closed.

[0017] The door frame hinge 10 is provided with a fixing seat 50 on both sides. The door frame hinge 10 is provided with a fixing seat 50 on both sides. The fixing seats 50 are both connected with an adjusting screw 51 . The other end of the adjusting screw 51 is screwed and connected with the door frame hinge 10 .

[0018] When in use, the adjustment screw 51 is turned to adjust the gap between the door frame hinge 10 and the fixing seat 50 to adjust the door gaps on both sides. After the door gaps are adjusted, the door frame hinge 10 and the fixing seat 50 are screwed together by the screw 52 to fix the door frame hinge 10 and the fixing seat 50.

Claims

1. A spring buffer hidden hinge, characterized in that: The invention comprises a door frame hinge (10), a door leaf hinge (20) and a rotating arm assembly (30); one side of the rotating arm assembly (30) is hinged to a slide groove (21) in the door leaf hinge (20) through a rotating shaft (31); the other side of the rotating arm assembly (30) is hinged to a second slide groove (11) in the door frame hinge (10) through a second rotating shaft (32); the door leaf hinge (20) is provided with a buffer assembly (40); the buffer assembly (40) comprises a sleeve (41), a buffer (42), a nut (43), a spring (44) and a screw (45); the buffer (42), the nut (43) and The spring (44) is arranged in the sleeve (41); one end of the screw rod (45) passes through the nut (43) and abuts against the push rod (421) of the buffer (42); the other end of the screw rod (45) passes through the rotating shaft (31); the spring (44) is sleeved on the outside of the screw rod (45); the spring (44) is arranged between the nut (43) and the door hinge (20); a second nut (451) and a second spring (452) are arranged in the screw rod (45); one end of the second spring (452) abuts against the second nut (451) and the other end abuts against the rotating shaft (31).

2. The spring buffer hidden hinge according to claim 1, characterized in that: Fixed seats (50) are provided on both sides of the door frame hinge (10), and both sides of the door frame hinge (10) are arranged in the fixed seats (50). Adjustment screws (51) are connected to the two fixed seats (50), and the other end of the adjustment screw (51) is screwed and connected to the door frame hinge (10).

3. The spring buffer hidden hinge according to claim 2, characterized in that: The door frame hinge (10) and the fixing seat (50) are screwed together by means of screws (52).

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