Modular Soft-close Hinge

Abstract

The present invention relates to a modular buffer hinge, which includes a first page plate and a second page plate, wherein the first page plate is provided with a first sleeve, the second page plate is provided with a second sleeve, and further includes a rotation buffer module, which includes a sleeve, a damping device (damper), a rotating shaft and a screw transmission pair, wherein the damping device is arranged in the sleeve, the damping device extends out of a piston rod, the rotating shaft is rotatably arranged in the sleeve and is transmission-connected with the screw transmission pair, and the linear motion part of the screw transmission pair is connected with the piston rod; the rotation buffer module is arranged in the first sleeve and the second sleeve, the rotating shaft is transmission-connected with the first sleeve, and the sleeve is transmission-connected with the second sleeve. The damping device, the rotating shaft and the screw transmission pair of the structure are pre-installed in the sleeve to form an independent rotation buffer module, the appearance of the rotation buffer module is equivalent to a shaft, and it can be connected with the sleeves of the two page plates, and it is easy to install and reliable in operation.

Description

Technical Field

[0001] The invention relates to a hinge, in particular to a modular buffer hinge. Background Art

[0002] The existing door hinge with buffering function generally uses the sleeve on the hinge as the cylinder of the damping device, injects hydraulic oil into it, and installs parts such as rotating shaft and spring. The installation is complicated and prone to oil leakage. Summary of the invention

[0003] The object of the present invention is to provide a modular buffer hinge which has a simple and reasonable structure, is easy to install and works reliably.

[0004] The object of the present invention is achieved in that:

[0005] A modular buffer hinge includes a first page plate and a second page plate, wherein the first page plate is provided with a first sleeve, and the second page plate is provided with a second sleeve. The invention is characterized in that the invention also includes a rotary buffer module, which includes a sleeve, a damping device (damper), a rotating shaft and a screw transmission pair. The damping device is arranged in the sleeve, the damping device extends out of the piston rod, the rotating shaft is rotatably arranged in the sleeve and is transmission-connected with the screw transmission pair, and the linear motion part of the screw transmission pair is connected with the piston rod; the rotary buffer module is arranged in the first sleeve and the second sleeve, the rotating shaft is transmission-connected with the first sleeve, and the sleeve is transmission-connected with the second sleeve. The damping device, rotating shaft and screw transmission pair of the structure are pre-installed in the sleeve to form an independent rotary buffer module. The rotary buffer module has an appearance equivalent to that of a shaft and can be connected with the sleeves of the two page plates. The rotary buffer module is easy to install and works reliably.

[0006] The purpose of the present invention can also be solved by the following technical measures:

[0007] As a more specific solution, the outer periphery of the sleeve is provided with an outer octagonal surface, which protrudes from the outer periphery of the sleeve, and the inner side of the second sleeve is an inner octagonal hole, and the inner octagonal hole and the outer octagonal surface are clearance-matched to form a transmission connection relationship. Through the octagonal surface matching, the rotation transmission is evenly stressed and not easy to wear.

[0008] As a further solution, the screw transmission pair includes a spiral rotor, a pin and a wear-resistant sleeve. The spiral rotor is the linear motion part. The spiral rotor is arranged in a sleeve for rotation and linear sliding. The spiral rotor is connected to the rotating shaft for transmission and linear sliding. The outer peripheral surface of the spiral rotor is provided with a spiral groove. The pin is arranged transversely in the sleeve. The wear-resistant sleeve is arranged outside the pin. The outer surface of the wear-resistant sleeve slides with the spiral groove. The wear-resistant sleeve is similar to a roller, and forms rolling friction with the spiral groove and the pin to reduce wear.

[0009] As a further solution, a transverse pin is provided outside the rotating shaft, a compression spring is provided between the transverse pin and the spiral rotor, and the compression spring is sleeved outside the rotating shaft. If the damping device has a spring inside to form an automatic reset damping device, the compression spring and transverse pin do not need to be installed.

[0010] As a further solution, the rotating shaft is provided with a guide groove penetrating the outer circumference thereof, the transverse pin is arranged in the guide groove and slides along the central axis direction of the rotating shaft, an opening is arranged in the center of the rotating shaft, one end of the opening leads to the guide groove, and the other end of the opening leads to the outer end of the rotating shaft, a door opening force adjustment screw is arranged in the opening, and the door opening force adjustment screw is threadedly connected to the opening. By adjusting the door opening force adjustment screw, the distance between the transverse pin and the spiral rotor can be changed, that is, the initial compression amount of the compression spring is changed, thereby changing the force required to be overcome when opening the door.

[0011] As a further solution, the outer end of the rotating shaft extends out of the sleeve, and a plug sleeve is provided on the outer end of the rotating shaft, and the plug sleeve is in driving cooperation with the rotating shaft, and at least a part of the plug sleeve is inserted into the first sleeve and is in driving cooperation with the inner wall of the first sleeve through an octagonal surface, and a set screw is provided on the outside of the first sleeve, and the set screw passes through the wall of the first sleeve and is pressed and cooperated with the outer wall of the plug sleeve. The plug sleeve limits the rotation buffer module from being withdrawn from the end where the plug sleeve is installed.

[0012] As a further solution, a ball bearing is provided between the rotating shaft and the sleeve, a collar is extended from one end of the ball bearing, and a first needle bearing is provided between the collar and the rotating shaft. The ball bearing can overcome the axial thrust of the rotating shaft when it is working, and the first needle bearing can overcome the centripetal thrust of the rotating shaft. Therefore, the combination of the two bearings allows the rotating shaft to rotate smoothly and prevents the rotating shaft from loosening.

[0013] As a further solution, the spiral rotor is provided with a guide hole, the inner wall of the guide hole is provided with an inner guide tooth pattern, and the inner guide tooth pattern extends along the axial direction of the spiral rotor; the inner end of the rotating shaft is provided with an outer guide tooth pattern, and the outer guide tooth pattern extends along the axial direction of the rotating shaft. The inner end of the rotating shaft is inserted into the guide hole, and the inner guide tooth pattern and the outer guide tooth pattern are meshed and linearly slidably matched.

[0014] As a further solution, the damping device includes an outer cylinder body, an inner cylinder body, a piston rod, a closing speed regulating valve, a piston, an end cover and a reset spring, one end of the outer cylinder body is fixedly connected to the sleeve, an inner cavity is arranged in the outer cylinder body, the closing speed regulating valve is threadedly connected to the lower end of the outer cylinder body, an opening communicating with the inner cavity is arranged at the upper end of the outer cylinder body, the inner cylinder body is placed in the inner cavity through the opening, an oil passage is arranged between the outer wall of the inner cylinder body and the inner wall of the outer cylinder body, the piston is arranged in the inner cylinder body, the piston divides the inner cylinder body into an upper cavity and a lower cavity, the piston is provided with a one-way valve, the one-way valve connects the upper cavity and the lower cavity in one direction, and the piston One end of the rod is located in the inner cylinder body and connected to the piston, and the other end of the piston rod is located outside the outer cylinder body and connected to the spiral rotor; an end cover is provided in the opening, and the piston rod passes through the end cover, and the upper end of the oil passage is connected with the upper chamber, and an oil passage regulating hole is provided at the bottom of the inner cylinder body, and the oil passage is connected with the lower chamber through the oil passage regulating hole; the return spring is arranged in the inner cylinder body and is crimped between the bottom of the piston and the bottom of the lower chamber; a valve needle is provided in the closing speed regulating valve corresponding to the oil passage regulating hole, and the flow of the oil passage regulating hole is adjusted by rotating the closing speed regulating valve to achieve the adjustment of the closing speed.

[0015] As a further solution, the first sleeve is composed of two sections, the two sections of the first sleeve are respectively a first sleeve section and a second sleeve section, the first sleeve section and the second sleeve section are respectively located at two ends of the same edge of the first page plate, a clearance groove is formed between the first sleeve section and the second sleeve section, the second sleeve is arranged in the clearance groove, a first gasket and a second gasket are respectively arranged between the second sleeve and the first sleeve section and between the second sleeve section; the other end of the cylinder body extends into the second sleeve section and a second needle roller bearing is arranged between the cylinder body and the second sleeve section. The second needle roller bearing supports the other end of the rotary buffer module, so that the rotary buffer module cannot be loosened toward the second needle roller bearing installation end, so that it is reliably located in the sleeves of the two page plates.

[0016] The beneficial effects of the present invention are as follows:

[0017] (1) The damping device, rotating shaft and screw transmission pair of this modular buffer hinge are pre-installed in the sleeve to form an independent rotary buffer module. The rotary buffer module is equivalent to a shaft and can be connected with the sleeves of the two leaf plates. It is easy to install and reliable in operation.

[0018] (2) The damping device of this modular buffer hinge is an independent part, which is more convenient to assemble with the sleeve of the rotary buffer module;

[0019] (3) The sleeve of the rotary buffer module of this modular buffer hinge is matched with the sleeve of one of the leaf plates through the hexagonal surface clearance and is connected by transmission. It is easy to assemble (no need to use a pressure device for installation like interference fit) and the transmission is reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The figure is a schematic diagram of the decomposed structure of an embodiment of the present invention.

[0021] Figure 2 It is a schematic diagram of the exploded structure of the rotary buffer module in the present invention.

[0022] Figure 3 This is a schematic diagram of the main structure of the present invention after assembly (connection holes are punched on the page plate).

[0023] Figure 4 for Figure 3 AA cross-sectional structure schematic diagram.

[0024] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of the medium damping device.

[0025] Figure 6 for Figure 5 Enlarged structural diagram at B in the middle.

[0026] Figure 7 It is a bottom view structural diagram of the end cover of the damping device in the present invention.

[0027] Figure 8 for Figure 7 Schematic diagram of the FF cross-sectional structure.

[0028] Fig. 9 It is a bottom view structural diagram of the piston of the damping device in the present invention.

[0029] Fig.10 for Fig. 9 Schematic diagram of the GG cross-sectional structure.

[0030] Fig.11 It is a schematic diagram of the main structure of the inner cylinder of the damping device in the present invention.

[0031] Fig.12 for Fig.11 Schematic diagram of the structure viewed from above.

[0032] Fig.13 for Figure 5 Schematic diagram of the structure of the middle damping device in another working state.

[0033] Fig.14 for Fig.13 Enlarged structural diagram at J in the middle.

[0034] Fig.15 It is a schematic diagram of the three-dimensional structure of the present invention. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0036] See also Figure 1-Figure 4 and Fig.15 As shown, a modular buffer hinge includes a first page plate 10 and a second page plate 20, the first page plate 10 is provided with a first sleeve, the second page plate 20 is provided with a second sleeve 201, and also includes a rotation buffer module 70, the module includes a sleeve 2, a damping device 3, a rotating shaft 1 and a screw transmission pair, the damping device 3 is arranged in the sleeve 2, the damping device 3 extends out of the piston rod 31, the rotating shaft 1 is rotatably arranged in the sleeve 2 and is transmission-connected to the screw transmission pair, and the linear motion part of the screw transmission pair is connected to the piston rod 31; the rotation buffer module 70 is arranged in the first sleeve and the second sleeve 201, the rotating shaft 1 is transmission-connected to the first sleeve, and the sleeve 2 is transmission-connected to the second sleeve 201.

[0037] The outer periphery of the sleeve 2 is provided with an outer octagonal surface 21, which protrudes from the outer periphery of the sleeve 2. The inner side of the second sleeve 201 is an inner octagonal hole 202, which is clearance-matched with the outer octagonal surface 21 to form a transmission connection relationship.

[0038] The screw transmission pair includes a spiral rotor 8, a pin shaft 83 and a wear-resistant sleeve 84. The spiral rotor 8 is the linear motion part. The spiral rotor 8 is arranged in the sleeve 2 for rotation and linear sliding. The spiral rotor 8 is connected to the rotating shaft 1 for transmission and linear sliding cooperation. The outer peripheral surface of the spiral rotor 8 is provided with a spiral groove 82, the pin shaft 83 is transversely arranged in the sleeve 2, the wear-resistant sleeve 84 is sleeved outside the pin shaft 83, and the outer surface of the wear-resistant sleeve 84 is slidably cooperated with the spiral groove 82.

[0039] A transverse pin 6 is disposed outside the rotating shaft 1 , and a compression spring 7 is disposed between the transverse pin 6 and the spiral rotor 8 . The compression spring 7 is sleeved outside the rotating shaft 1 .

[0040] The rotating shaft 1 is provided with a guide groove 12 which passes through its outer circumference. The cross pin 6 is arranged in the guide groove 12 and slides along the central axis direction of the rotating shaft 1. An opening 14 is provided in the center of the rotating shaft 1. One end of the opening 14 leads to the guide groove 12, and the other end of the opening 14 leads to the outer end of the rotating shaft 1. A door opening force adjustment screw 8 is provided in the opening 14, and the door opening force adjustment screw 8 is threadedly connected to the opening 14.

[0041] The outer end of the rotating shaft 1 extends out of the sleeve 2, and the outer end of the rotating shaft 1 is sleeved with a plug sleeve 60, which is in transmission cooperation with the rotating shaft 1. At least a part of the plug sleeve 60 is inserted into the first sleeve and is in transmission cooperation with the inner wall of the first sleeve through the octagonal surface. A fixing screw 102 is provided on the outside of the first sleeve, and the fixing screw 102 passes through the wall surface of the first sleeve and is pressed and fitted with the outer wall of the plug sleeve 60.

[0042] A ball bearing 5 is provided between the rotating shaft 1 and the sleeve 2 , a sleeve ring is extended from one end of the ball bearing 5 , and a first needle bearing 4 is provided between the sleeve ring and the rotating shaft 1 .

[0043] The spiral rotor 8 is provided with a guide hole 81, and the inner wall of the guide hole 81 is provided with an inner guide tooth pattern, and the inner guide tooth pattern extends along the axial direction of the spiral rotor 8; the inner end of the rotating shaft 1 is provided with an outer guide tooth pattern 13, and the outer guide tooth pattern 13 extends along the axial direction of the rotating shaft 1. The inner end of the rotating shaft 1 is inserted into the guide hole 81, and the inner guide tooth pattern and the outer guide tooth pattern 13 are meshed and linearly slidably matched.

[0044] Combination Figures 5 to 12 As shown, the damping device 3 includes an outer cylinder body 33, an inner cylinder body 38, a piston rod 31, a closing speed regulating valve 32, a piston 35, an end cover 34 and a reset spring 37. One end of the outer cylinder body 33 is fixedly connected to the sleeve 2. An inner cavity is provided in the outer cylinder body 33. The closing speed regulating valve 32 is threadedly connected to the lower end of the outer cylinder body 33. An opening communicating with the inner cavity is provided at the upper end of the outer cylinder body 33. The inner cylinder body 38 is placed in the inner cavity through the opening. An oil passage is provided between the outer wall of the inner cylinder body 38 and the inner wall of the outer cylinder body 33. The piston 35 is arranged in the inner cylinder body 38. The piston 35 divides the inner cylinder body 38 into an upper cavity 381 and a lower cavity 382. The piston 35 is provided with a one-way valve. The one-way valve connects the upper cavity 381 and the lower cavity 382 in one direction. 1 is located in the inner cylinder 38 and connected to the piston 35, and the other end of the piston rod 31 is located outside the outer cylinder 33 and connected to the spiral rotor 8; an end cover 34 is provided in the opening, and the piston rod 31 passes through the end cover 34, and the upper end of the oil passage is connected to the upper chamber 381, and an oil passage adjustment hole 383 is provided at the bottom of the inner cylinder 38, and the oil passage is connected to the lower chamber 382 through the oil passage adjustment hole 383; the reset spring 37 is arranged in the inner cylinder 38 and is pressed on the bottom of the piston 35 and the bottom of the lower chamber 382; the closing speed regulating valve 32 is provided with a valve needle 321 corresponding to the oil passage adjustment hole 383, and the flow of the oil passage adjustment hole 383 is adjusted by rotating the closing speed regulating valve 32 to achieve the adjustment of the closing speed. The valve needle 321 is tapered with a narrow upper end and a wide lower end.

[0045] The inner cylinder 38 is provided with a convex ring 385 at the bottom, which raises the bottom of the inner cylinder 38 and the inner cavity of the outer cylinder 33 by a certain distance. The convex ring 385 is provided with a radial groove 386. The outer wall of the inner cylinder 38 is provided with a section 384 along its axial direction. The end cover 34 is provided with a radial groove 342 at the bottom, and the end cover 34 is provided with a center hole 341 corresponding to the piston rod 31. The inner wall of the center hole 341 is provided with a first positioning groove 343. The outer periphery of the end cover 34 is provided with a second positioning groove 344. The first positioning groove 343 and the second positioning groove 344 are used to place sealing rings respectively. The gap 331 between the section 384 and the inner cavity wall of the outer cylinder 33, the gap 331 between the bottom of the inner cylinder 38 and the bottom of the outer cylinder 33, the groove 386 and the radial groove 342 together constitute the oil passage.

[0046] An annular groove 352 is provided on the outer periphery of the piston 35, and a plurality of oil holes 351 are axially provided on the bottom of the piston 35, and the oil holes 351 are communicated with the annular groove 352; a sealing ring 36 is sleeved inside the annular groove 352, and the outer periphery of the sealing ring 36 is sealed with the inner wall of the inner cylinder body 38, and a central oil hole 361 is provided at the center of the sealing ring 36, and the central oil hole 361 is gap-fitted with the annular groove 352, and the sealing ring 36 and the annular groove 352 are movably matched up and down, and the sealing ring 36, the oil hole 351, the central oil hole 361, and the annular groove 362 cooperate with each other to form the one-way valve.

[0047] The first sleeve is composed of two sections, namely, a first sleeve 101 and a second sleeve 104. The first sleeve 101 and the second sleeve 104 are respectively located at two ends of the same edge of the first page 10. A clearance groove 103 is formed between the first sleeve 101 and the second sleeve 104. The second sleeve 201 is arranged in the clearance groove 103. A first washer 30 and a second washer 40 are respectively arranged between the second sleeve 201 and the first sleeve 101 and between the second sleeve 104. The other end of the cylinder body extends into the second sleeve 104 and a second needle bearing 50 is arranged between the cylinder body and the second sleeve 104. The inner holes of the first sleeve 101, the second sleeve 104, the first washer 30 and the second washer 40 are all octagonal holes matching the outer octagonal surface 21.

[0048] At least a portion of the plug sleeve 60 is inserted into a section of the first sleeve 101 of the first sleeve, and the set screw 102 passes through the wall of a section of the first sleeve 101 and is pressed and fitted with the outer wall of the plug sleeve 60.

[0049] Its working principle is: the first leaf plate 10 and the second leaf plate 20 are connected to the door frame and the door body respectively. When the door is opened, the rotating shaft 1 and the sleeve 2 rotate relatively, and the rotating shaft 1 drives the spiral rotor 8 to rotate. During the rotation of the spiral rotor 8, it synchronously moves linearly toward the cross pin 6, and the compression spring 7 is compressed to store energy. At the same time, the piston rod 31 of the damping device 3 is extended upward under the action of the reset spring 37. When the door opening force is removed, the compression spring 7 releases its energy, and the spiral rotor 8 moves linearly toward the damping device 3, and the spiral rotor 8 rotates in the opposite direction, and at the same time, the rotating shaft 1 and the sleeve 2 rotate in the opposite direction relative to each other, and the door body is automatically closed. During the closing process of the door body, the piston rod 31 retracts into the damping device 3 and performs damping motion, so the door body closes slowly.

[0050] Combination Figure 5 and Figure 6 As shown, when the piston rod 31 is retracted into the damping device 3 (see Figure 5 , Figure 6In the direction of the arrow C in the middle), the piston rod 31 drives the piston 35 to move toward the lower chamber 382 of the inner cylinder body 38, and the upper surface of the annular groove 352 of the piston 35 pushes the sealing ring 36 to move toward the lower chamber 382 (that is, the contact between the top surface of the sealing ring 36 and the upper surface of the annular groove 352 is sealed, see Figure 6 As shown by the arrow E in the middle, the volume of the lower chamber 382 becomes smaller, and the hydraulic oil in the lower chamber 382 passes through the oil regulating hole 383, the slot 386, the gap 331 between the bottom of the inner cylinder 38 and the bottom of the outer cylinder 33, the gap between the cut surface 384 and the inner wall of the outer cylinder 33, and the radial slot 342, and then slowly enters the upper chamber 381, thereby producing a buffering effect. If the closing speed needs to be adjusted, the length of the valve needle 321 extending into the oil regulating hole 383 is adjusted by adjusting the closing speed regulating valve 32, thereby adjusting the gap between the valve needle 321 and the oil regulating hole 383. The smaller the gap, the slower the closing speed, and vice versa.

[0051] Combination Fig.13 and Fig.14 As shown, the piston rod 31 is Fig.13 and Fig.14 When the arrow H in the middle extends upward, the return spring 37 deforms and moves, driving the piston rod 31 to extend upward through the piston 35, and the piston 35 moves toward the upper chamber 381 of the inner cylinder body 38. The lower surface of the annular groove 352 of the piston 35 pushes the sealing ring 36 to move toward the upper chamber 381 (that is, a certain oil-passing gap K is separated between the top surface of the sealing ring 36 and the upper surface of the annular groove 352, and the oil-passing gap is connected with the central oil-passing hole 361 and the oil-passing hole 351. A part of the hydraulic oil in the upper chamber 381 enters the lower chamber 382 through the oil-passing gap K, the oil-passing hole 351 and the central oil-passing hole 361, and another part of the hydraulic oil enters the lower chamber 382 through the radial groove 342, the gap between the cut surface 384 and the inner chamber wall of the outer cylinder body 33, the gap 331 between the bottom of the inner cylinder body 38 and the bottom of the outer cylinder body 33, the slot 386 and the oil-passing adjustment hole 383 (see Fig.13 As shown by the arrow I in the figure, it can be seen that when the piston rod 31 of the damping device 3 extends outward to reset, its hydraulic oil quickly enters the lower chamber 382 from the upper chamber 381, so that rapid reset is achieved to provide a buffering effect for the next door closing.

Claims

1. A modular buffer hinge, comprising a first page plate and a second page plate, wherein the first page plate is provided with a first sleeve, and the second page plate is provided with a second sleeve, characterized in that: It also includes a rotary buffer module, which includes a sleeve, a damping device, a rotating shaft and a screw transmission pair. The damping device is arranged in the sleeve, the damping device extends out of the piston rod, the rotating shaft is rotatably arranged in the sleeve and is transmission-connected with the screw transmission pair, and the linear motion part of the screw transmission pair is connected with the piston rod; the rotary buffer module is arranged in the first sleeve and the second sleeve, the rotating shaft is transmission-connected with the first sleeve, and the sleeve is transmission-connected with the second sleeve; The screw transmission pair includes a spiral rotor, a pin shaft and a wear-resistant sleeve. The spiral rotor is the linear motion part. The spiral rotor is arranged in a sleeve for rotation and linear sliding. The spiral rotor is connected to the rotating shaft for transmission and linear sliding. The outer circumference of the spiral rotor is provided with a spiral groove. The pin shaft is transversely arranged in the sleeve. The wear-resistant sleeve is arranged outside the pin shaft. The outer surface of the wear-resistant sleeve is in sliding cooperation with the spiral groove. A ball bearing is provided between the rotating shaft and the sleeve, a collar extends from one end of the ball bearing, and a first needle bearing is provided between the collar and the rotating shaft; The damping device comprises an outer cylinder body, an inner cylinder body, a piston rod, a closing speed regulating valve, a piston, an end cover and a reset spring. One end of the outer cylinder body is fixedly connected to the sleeve. An inner cavity is arranged in the outer cylinder body. The closing speed regulating valve is threadedly connected to the lower end of the outer cylinder body. An opening communicating with the inner cavity is arranged at the upper end of the outer cylinder body. The inner cylinder body is placed in the inner cavity through the opening. An oil passage is arranged between the outer wall of the inner cylinder body and the inner wall of the outer cylinder body. The piston is arranged in the inner cylinder body. The piston divides the inner cylinder body into an upper cavity and a lower cavity. The piston is provided with a one-way valve. The one-way valve connects the upper cavity and the lower cavity in one direction. One end of the piston rod It is located in the inner cylinder body and connected to the piston, and the other end of the piston rod is located outside the outer cylinder body and connected to the spiral rotor; an end cover is provided in the opening, the piston rod passes through the end cover, the upper end of the oil passage is connected with the upper chamber, and an oil adjustment hole is provided at the bottom of the inner cylinder body, and the oil passage is connected with the lower chamber through the oil adjustment hole; the return spring is arranged in the inner cylinder body and is crimped on the bottom of the piston and the bottom of the lower chamber; the closing speed regulating valve is provided with a valve needle corresponding to the oil adjustment hole, and the flow of the oil adjustment hole is adjusted by rotating the closing speed regulating valve to achieve the adjustment of the closing speed.

2. The modular buffer hinge according to claim 1, characterized in that: The outer periphery of the sleeve is provided with an outer octagonal surface, which protrudes from the outer periphery of the sleeve. The inner side of the second sleeve is an inner octagonal hole, and the inner octagonal hole and the outer octagonal surface are clearance-matched to form a transmission connection relationship.

3. The modular buffer hinge according to claim 1, characterized in that: A transverse pin is arranged outside the rotating shaft, a compression spring is arranged between the transverse pin and the spiral rotor, and the compression spring is sleeved outside the rotating shaft.

4. The modular buffer hinge according to claim 3, characterized in that: The rotating shaft is provided with a guide groove running through its outer circumference, the cross pin is arranged in the guide groove and slides along the central axis direction of the rotating shaft, an opening is provided in the center of the rotating shaft, one end of the opening leads to the guide groove, and the other end of the opening leads to the outer end of the rotating shaft, and a door opening force adjustment screw is provided in the opening, and the door opening force adjustment screw is threadedly connected to the opening.

5. The modular buffer hinge according to claim 3, characterized in that: The outer end of the rotating shaft extends out of the sleeve, and a plug sleeve is provided on the outer end of the rotating shaft. The plug sleeve is in transmission cooperation with the rotating shaft, and at least a part of the plug sleeve is inserted into the first sleeve and is in transmission cooperation with the inner wall of the first sleeve through the octagonal surface. A fixing screw is provided on the outside of the first sleeve, and the fixing screw passes through the wall surface of the first sleeve and is pressed and fitted with the outer wall of the plug sleeve.

6. The modular buffer hinge according to claim 1, characterized in that: The spiral rotor is provided with a guide hole, the inner wall of the guide hole is provided with an inner guide tooth pattern, and the inner guide tooth pattern extends along the axis direction of the spiral rotor; the inner end of the rotating shaft is provided with an outer guide tooth pattern, and the outer guide tooth pattern extends along the axis direction of the rotating shaft. The inner end of the rotating shaft is inserted into the guide hole, and the inner guide tooth pattern and the outer guide tooth pattern are meshed and linearly slidably matched.

7. The modular buffer hinge according to claim 1, characterized in that: The first sleeve is composed of two sections, and the two sections of the first sleeve are respectively a first sleeve of section one and a first sleeve of section two. The first sleeve of section one and the first sleeve of section two are respectively located at the two ends of the same edge of the first page plate, and a clearance groove is formed between the first sleeve of section one and the first sleeve of section two. The second sleeve is arranged in the clearance groove, and a first gasket and a second gasket are respectively arranged between the second sleeve and the first sleeve of section one and between the first sleeve of section two; the other end of the cylinder body extends into the first sleeve of section two, and a second needle roller bearing is arranged between the cylinder body and the first sleeve of section two.

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