A concealed automatic door closing hinge

Abstract

The present invention relates to the field of door hinges, and particularly to a concealed automatic closing door hinge. A concealed automatic closing door hinge is provided, which includes a fixed seat installed on a doorframe, a moving seat installed on a door leaf, and a hinge assembly. The fixed seat includes an outer fixed seat and an inner fixed seat; the moving seat includes an outer moving seat, a moving seat fixing block fixed inside the outer moving seat, a moving slider, and a buffer mechanism. The buffer mechanism includes a damping sleeve, a spring, and a damper, a hinge buckle, a damping dial, and a damping bearing that are sequentially hinged. One end of the damping sleeve is provided with a spring catch block; the damper is embedded in the damping sleeve. The middle of the damping dial, the middle of the damping bearing, and the spring catch block are hinged, and the damping sleeve is embedded in the middle of the spring; the hinge assembly includes a central swing arm and a central swing arm rotating shaft.

Description

Technical Field

[0001] The invention relates to the field of door hinges, in particular to a concealed automatic door closing hinge. Background Art

[0002] With the progress of society and scientific development, the technical level of our products is also constantly improving. There are new requirements for door hinges, and hinges with self-closing function have generated a large market demand. Door hinges with self-closing buffer function are mostly exposed hinges, which have the following disadvantages: they are not beautiful, and the exposed part of such hinges is easy to damage the overall effect of the door. Although the traditional concealed door hinge is installed in a hidden way, it cannot achieve the effect of automatic door closing. Summary of the invention

[0003] The purpose of the present invention is to overcome the above defects and provide a concealed automatic door closing hinge. When installed on the door, it can not only play the role of concealed door hinge without being exposed, but also realize the function of automatic slow closing after opening the door. When the door opening angle is within the self-closing angle, the door can be automatically closed slowly. The self-closing angle range can be any value between 5° and 180°. At the same time, the present invention also has the advantages of compact structure and quietness.

[0004] The technical solution adopted by the present invention is: a concealed automatic door closing hinge, comprising a fixed seat installed on the door frame, a movable seat installed on the door leaf, and a hinge assembly connecting the fixed seat and the movable seat, wherein the fixed seat comprises a fixed seat outer seat and a fixed seat inner seat, and a fixed seat inner seat groove is arranged inside the fixed seat outer seat; the movable seat comprises a movable seat outer seat, a movable seat fixing block, a movable slider and a buffer mechanism, and a movable slider groove is arranged inside the movable seat outer seat; slider moving pins and slider rolling surfaces are arranged on both sides of the movable slider; the buffer mechanism comprises a damping sleeve, a spring, a damper, a hinge buckle, a damping block and a damping bearing, a spring block is arranged at one end of the damping sleeve, and a damping sleeve is arranged in the middle The damper is embedded in a groove; the movable slider is embedded in the movable slider groove in the outer seat of the movable seat, and the movable slider can slide within the range of the movable slider groove; the buffer mechanism is fixed in the outer seat of the movable seat, and the damper is embedded in the damper embedding groove in the middle of the damping sleeve, and one end of the damper is hinged to one end of the hinge buckle; the other end of the hinge buckle is hinged to one end of the damping shift block; the middle part of the damping shift block is hinged to the spring block; the middle part of the damping bearing is hinged to the spring block, the damping bearing and the sliding block rolling surface abut, the damping sleeve is embedded in the middle part of the spring, and one end of the spring abuts against the spring block; the hinge assembly includes a central swing arm and a central swing arm rotating shaft, and the central swing arm rotating shaft passes through the other end of the central swing arm and is connected to the movable slider at both ends.

[0005] The inner part of the outer seat of the fixed seat is provided with an adjusting screw hole, and both ends of the inner seat of the fixed seat are provided with adjusting screw holes. An adjusting screw is inserted into the adjusting screw holes and the adjusting screw hole to fix the inner seat of the fixed seat inside the outer seat of the fixed seat.

[0006] Both sides of the outer seat of the moving seat are provided with moving seat pin holes, and a fixed block pin shaft is embedded in the middle of the moving seat fixing block. Both ends of the fixed block pin shaft are inserted into the moving seat pin holes to fix the moving seat fixing block inside the outer seat of the moving seat.

[0007] The buffer mechanism includes an adjustable stop block. Both ends of the outer seat of the moving seat are provided with adjustable stop block holes. The adjustable stop block is fixed in the adjustable stop block holes on the outer seat of the moving seat. The adjustable stop block is connected to the other end of the damping sleeve, and one end of the adjustable stop block abuts against the spring. By adjusting the position of the adjustable stop block, the prestress of the spring can be adjusted to adjust the tightness of opening and closing the door.

[0008] One end of the damping sleeve is provided with a damper retaining groove, and one end of the damper is provided with a damper pin hole. A damper pin shaft is inserted into the damper retaining groove and the damper pin hole to fix the damper inside the damping sleeve.

[0009] One end of the rolling surface of the slider is an inclined surface and the other end is a straight surface.

[0010] Both sides of the moving slider groove are provided with slider bearing chutes. One end of the middle part of the moving slider is embedded with a slider central rotating shaft. Both ends of the slider central rotating shaft are provided with slider bearings. The slider bearings are embedded in the slider bearing chutes, and the slider bearings can slide within the range of the moving seat slider chute.

[0011] The hinge assembly includes a Y-shaped swing arm, a side swing arm, a fixed seat inner seat rotating shaft, a side swing arm rotating shaft, a Y-shaped swing arm rotating shaft, a central rotating shaft and a moving seat inner seat rotating shaft; the fixed seat inner seat rotating shaft passes through one end of the central rotating shaft, and both ends of the fixed seat inner seat rotating shaft are connected to the fixed seat inner seat; the side swing arm rotating shaft is fixed inside the fixed seat inner seat and both ends are connected to one end of the side swing arm; the Y-shaped swing arm rotating shaft passes through one end of the Y-shaped swing arm and both ends are connected to the other end of the side swing arm; the central rotating shaft passes through the middle of the central swing arm and both ends are connected to the Y-shaped swing arm; the moving seat inner seat rotating shaft passes through the other end of the Y-shaped swing arm and both ends are connected to the moving seat fixing block.

[0012] The inner part of the outer seat of the moving seat is provided with a moving seat spring embedding groove, and one side of the moving seat fixing block is provided with a fixed block spring embedding groove. One side of the spring is embedded in the moving seat spring embedding groove and the other side is embedded in the fixed block spring embedding groove.

[0013] One end of the damping dial is provided with a dial groove. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 It is a schematic diagram of the structure of the fixing seat of the present invention;

[0016] Figure 3 This is a schematic diagram of the structure of the mobile seat of the present invention;

[0017] Figure 4 It is a front structural schematic diagram of the hinge assembly of the present invention;

[0018] Figure 5 It is a schematic diagram of the side structure of the hinge assembly of the present invention;

[0019] Figure 6 This is a schematic diagram of the cross-sectional structure of the present invention in an open door state;

[0020] Figure 7 It is a schematic diagram of the cross-sectional structure of the closed door state of the present invention.

[0021] The numbers in the figure indicate

[0022] 1. Fixed seat, 11. Fixed seat outer seat, 111. Fixed seat inner seat groove, 112. Adjusting screw hole, 12. Fixed seat inner seat, 121. Adjusting screw screw hole, 13. Adjusting screw;

[0023] 2. Mobile seat;

[0024] 21. Outer seat of movable seat, 211. Sliding block groove, 2111. Sliding block bearing groove, 212. Spring groove of movable seat, 213. Pin hole of movable seat, 214. Adjustable stopper hole;

[0025] 22. Moving seat fixing block, 221. Fixing block spring embedding groove, 222. Fixing block pin shaft;

[0026] 23. Moving slider, 231. Center shaft of slider, 232. Moving pin of slider, 233. Bearing of slider, 234. Rolling surface of slider;

[0027] 24. Buffer mechanism, 241. Damping sleeve, 2411. Damping retaining groove, 2412. Spring clamp, 2413. Damping groove, 242. Spring, 243. Damping, 2431. Damping pin hole, 2432. Damping pin shaft, 244. Articulated buckle, 245. Damping dial block, 2451. Dial groove, 246. Damping bearing, 247. Adjustable stopper;

[0028] 3. Hinge assembly, 31. Y-type swing arm, 32. Center swing arm, 33. Side swing arm, 34. Fixed seat inner seat rotation shaft, 35. Side swing arm rotation shaft, 36. Y-type swing arm rotation shaft, 37. Center rotation shaft, 38. Center swing arm rotation shaft, 39. Mobile seat inner seat rotation shaft. DETAILED DESCRIPTION

[0029] A concealed automatic door closing hinge comprises a fixed seat 1 installed on a door frame, a movable seat 2 installed on a door leaf, and a hinge assembly 3 connecting the fixed seat 1 and the movable seat 2.

[0030] The fixing seat 1 includes a fixing seat outer seat 11, a fixing seat inner seat 12 and an adjusting screw 13. The fixing seat outer seat 11 is provided with a fixing seat inner seat groove 111 and an adjusting screw hole 112, and the fixing seat inner seat 12 is provided with adjusting screw holes 121 at both ends; the fixing seat inner seat 12 is fixed in the fixing seat inner seat groove 111, and the adjusting screw 13 is embedded in the adjusting screw hole 121 and the adjusting screw hole 112 to fix the fixing seat inner seat 12 in the fixing seat outer seat 11.

[0031] The movable seat comprises a movable seat outer seat 21, a movable seat fixed block 22, a movable slider 23 and a buffer mechanism 24. A movable slider groove 211 is provided in the middle of the inner part of the movable seat outer seat 21, and a movable seat spring groove 212 is provided on both sides of the inner part. Slider bearing grooves 2111 are provided on both sides of the movable slider groove 211. A movable seat pin hole 213 is provided on both sides of the movable seat outer seat 21, and adjustable stopper holes 214 are provided at both ends of the movable seat outer seat 21. A fixed block spring groove 221 is provided on one side of the movable seat fixed block 22, and a fixed block pin shaft 222 is embedded in the middle of the movable seat fixed block 22. A slider center shaft 231 is embedded in the middle of one end of the movable slider 23, and slider bearings 233 are provided at both ends of the slider center shaft 231. A slider toggle pin shaft 232 and a slider rolling surface 234 are embedded on both sides of the movable slider 23, and one end of the slider rolling surface 324 is an inclined surface and the other end is a straight surface. The buffer mechanism 24 includes a damping sleeve 241, a spring 242, a damper 243, a hinge buckle 244, a damping shift block 245, a damping bearing 246 and an adjustable stopper 247. A damping sleeve 241 is provided with a damper stop groove 2411 at one end and a spring block 2412 at the other end. A damper embedding groove 2413 is provided in the middle of the damping sleeve 241. A damper pin hole 2431 is provided at one end of the damper 243; and a shift groove 2451 is provided at one end of the damping shift block 245.

[0032] Both ends of the fixed block pin shaft 222 are embedded in the movable seat pin hole 213 to fix the movable seat fixed block 22 in the movable seat outer seat 21; the movable slider 23 is embedded in the movable slider groove 211 in the movable seat outer seat 21, and the slider bearing 233 is embedded in the slider bearing groove 2111. The slider bearing 233 can slide within the range of the slider bearing groove 2111, driving the movable slider 23 to slide in the movable slider groove 211.

[0033] The buffer mechanism 224 is fixed in the outer seat 21 of the moving seat, one side of the spring 242 is embedded in the spring groove 212 of the moving seat, and the other side is embedded in the spring groove 221 of the fixed block; the damper 243 is embedded in the damper groove 2413 in the middle of the damping sleeve 241, and a damper pin shaft 2432 is provided to be embedded in the damper retaining groove 2411 and the damper pin hole 2431 to fix the damper 243 in the damping sleeve 241, and the other end of the damper 243 is hinged to one end of the hinge buckle 244; the other end of the hinge buckle 244 is hinged to the damper One end of the damping block 245 is hinged; the middle part of the damping block 245 is hinged to the spring block 2412; the middle part of the damping bearing 246 is hinged to the spring block 2412, and the damping bearing 246 abuts against the rolling surface 234 of the slider; the adjustable block 247 is fixed in the adjustable block hole 214 on the outer seat 21 of the movable seat, and the adjustable block 247 is connected to the other end of the damping sleeve 241; the damping sleeve 241 is embedded in the middle part of the spring 242, and one end of the spring 242 abuts against the spring block 2412, and the other end abuts against the adjustable block 247.

[0034] The hinge assembly 3 includes a Y-shaped swing arm 31, a central swing arm 32, a side swing arm 33, a fixed seat inner seat rotation shaft 34, a side swing arm rotation shaft 35, a Y-shaped swing arm rotation shaft 36, a central rotation shaft 37, a central swing arm rotation shaft 38 and a movable seat inner seat rotation shaft 39. The fixed seat inner seat rotating shaft 34 passes through one end of the central swing arm 32, and the two ends of the fixed seat inner seat rotating shaft 34 are connected to the fixed seat inner seat 12; the side swing arm rotating shaft 35 is fixed in the fixed seat inner seat 12, and its two ends are connected to one end of the side swing arm 33; the Y-shaped swing arm 36 rotating shaft passes through one end of the Y-shaped swing arm 31, and its two ends are connected to the other end of the side swing arm 33; the central rotating shaft 37 passes through the middle of the central swing arm 32, and its two ends are connected to the Y-shaped swing arm 36; the central swing arm rotating shaft 38 passes through the other end of the central swing arm 32, and its two ends are connected to the movable slider 23; the movable seat inner seat rotating shaft 39 passes through the other end of the Y-shaped swing arm 31, and its two ends are connected to the movable seat fixed block 22.

[0035] When the door leaf is in an open state, the damping bearing and the rolling surface of the slider are in direct contact with each other, and the spring is in a compressed state.

[0036] When closing the door, as the door leaf moves, the hinge assembly drives the moving slider to slide toward the inside of the outer seat of the moving seat, and the damping bearing rolls along the slider rolling surface of the moving slider from the straight surface to the inclined surface. When the damping bearing rolls to the inclined surface, under the action of the spring force, the damping bearing exerts a component force on the moving slider toward the inside of the outer seat of the moving seat, and the moving slider is forced to continue to slide toward the inside of the outer seat of the moving seat, and the hinge begins to close automatically. The moving slider continues to slide until the slider push pin on the moving slider is embedded in the push groove on the damping push block, and the slider push pin drives the damping push block to rotate toward the inside of the outer seat of the moving seat, stretching and triggering the damper. Under the action of the damping force, the sliding speed of the moving slider toward the inside of the outer seat of the moving seat slows down, and the door slowly closes.

[0037] When opening the door, as the door leaf moves, the hinge assembly drives the moving slider to slide to the outside of the outer seat of the moving seat, and the damping bearing rolls along the slider rolling surface of the moving slider from the inclined surface to the straight surface. The spring is forced to compress and store energy, and the slider toggle pin drives the damping block to rotate to the outside of the outer seat of the moving seat. The damper is compressed until the slider toggle pin is disengaged from the toggle groove on the damping block. The door continues to open, and the spring continues to be compressed until the damping bearing rolls to the straight surface of the moving slider. The spring energy storage ends and the door can continue to open to 108°. During the process of spring energy storage, the door will automatically close if the external force of opening the door is removed at any angle. Adjusting the position of the adjustable block can adjust the tightness of the door opening and closing to improve the feel of opening the door.

Claims

1. A concealed automatic door closing hinge, comprising a fixed seat installed on a door frame, a movable seat installed on a door leaf, and a hinge assembly connecting the fixed seat and the movable seat. Its characteristics are: The fixed seat comprises a fixed seat outer seat and a fixed seat inner seat, and a fixed seat inner seat groove is arranged inside the fixed seat outer seat; the movable seat comprises a movable seat outer seat, a movable seat fixed block, a movable slider and a buffer mechanism, and a movable slider groove is arranged inside the movable seat outer seat; a slider toggle pin and a slider rolling surface are arranged on the side of the movable slider; the buffer mechanism comprises a damping sleeve, a spring, a damper, a hinge buckle, a damping toggle block and a damping bearing, and a spring block is arranged at one end of the damping sleeve, and a damper embedding groove is arranged in the middle of the damping sleeve; the movable slider is embedded in the movable slider groove in the movable seat outer seat, and the movable slider can Slide within the range of the movable slider groove; the buffer mechanism is fixed in the outer seat of the movable seat, the damper is embedded in the damper embedding groove in the middle of the damping sleeve, one end of the damper is hinged to one end of the hinge buckle; the other end of the hinge buckle is hinged to one end of the damping shift block; the middle part of the damping shift block is hinged to the spring block; the middle part of the damping bearing is hinged to the spring block, the damping bearing and the sliding block rolling surface abut, the damping sleeve is embedded in the middle part of the spring, and one end of the spring abuts against the spring block; the hinge assembly includes a central swing arm and a central swing arm rotating shaft, and the central swing arm rotating shaft passes through the other end of the central swing arm and is connected to both ends and the movable slider.

2. A concealed automatic door closing hinge as claimed in claim 1, Its characteristics are: An adjusting screw hole is arranged inside the outer seat of the fixing seat, and adjusting screw holes are arranged at both ends of the inner seat of the fixing seat. An adjusting screw is arranged to be embedded in the adjusting screw hole and the adjusting screw hole to fix the inner seat of the fixing seat in the outer seat of the fixing seat.

3. A concealed automatic door closing hinge as claimed in claim 1, Its characteristics are: The movable seat pin holes are arranged on both sides of the movable seat outer seat, the middle of the movable seat fixed block is embedded with a fixed block pin shaft, and the two ends of the fixed block pin shaft are embedded in the movable seat pin holes to fix the movable seat fixed block in the movable seat outer seat.

4. A concealed automatic door closing hinge as claimed in claim 1, Its characteristics are: The buffer mechanism includes an adjustable block, and adjustable block holes are provided at both ends of the outer seat of the movable seat. The adjustable block is fixed in the adjustable block hole on the outer seat of the movable seat. The adjustable block is connected to the other end of the damping sleeve, and one end of the adjustable block is in contact with the spring. The prestress of the spring can be adjusted by adjusting the position of the adjustable block to adjust the tightness of the door opening and closing.

5. A concealed automatic door closing hinge as claimed in claim 1, Its characteristics are: A damper retaining groove is arranged at one end of the damping sleeve, a damper pin hole is arranged at one end of the damper, and a damper pin shaft is arranged to be embedded in the damper retaining groove and the damper pin hole to fix the damper in the damping sleeve.

6. A concealed automatic door closing hinge as claimed in claim 1, Its characteristics are: One end of the sliding surface of the slider is an inclined surface, and the other end is a straight surface.

7. A concealed automatic door closing hinge as claimed in claim 1, Its characteristics are: Slider bearing grooves are provided on both sides of the movable slider groove, a slider center shaft is embedded in the middle of one end of the movable slider, slider bearings are provided at both ends of the slider center shaft, the slider bearings are embedded in the slider bearing grooves, and the slider bearings can slide within the range of the movable seat slider groove.

8. A concealed automatic door closing hinge as claimed in claim 1, Its characteristics are: The hinge assembly includes a Y-shaped swing arm, a side swing arm, a fixed seat inner seat rotating shaft, a side swing arm rotating shaft, a Y-shaped swing arm rotating shaft, a center rotating shaft and a movable seat inner seat rotating shaft; the fixed seat inner seat rotating shaft passes through one end of the center rotating shaft, and both ends of the fixed seat inner seat rotating shaft are connected to the fixed seat inner seat; the side swing arm rotating shaft is fixed in the fixed seat inner seat, and both ends are connected to one end of the side swing arm; the Y-shaped swing arm rotating shaft passes through one end of the Y-shaped swing arm, and both ends are connected to the other end of the side swing arm; the center rotating shaft passes through the middle of the center swing arm, and both ends are connected to the Y-shaped swing arm; the movable seat inner seat rotating shaft passes through the other end of the Y-shaped swing arm, and both ends are connected to the movable seat fixed block.

9. A concealed automatic door closing hinge as claimed in claim 1, Its characteristics are: A moving seat spring embedding groove is arranged inside the outer seat of the moving seat, a fixed block spring embedding groove is arranged on one side of the moving seat fixed block, one side of the spring is embedded in the moving seat spring embedding groove, and the other side is embedded in the fixed block spring embedding groove.

10. A concealed automatic door closing hinge as claimed in claim 1, Its characteristics are: One end of the damping paddle block is provided with a paddle groove.

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