CN213927948U

CN213927948U - Take clutching mechanism's buffering hinge

Info

Publication number: CN213927948U
Application number: CN202022542840.4U
Authority: CN
Inventors: 陈云
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-05
Filing date: 2020-11-05
Publication date: 2021-08-10
Anticipated expiration: 2030-11-05

Abstract

The utility model relates to a buffering hinge with a clutch mechanism, wherein an upper fixing sleeve and a lower fixing sleeve are coaxially arranged, a driving mechanism, a buffering mechanism and the clutch mechanism are arranged in the upper fixing sleeve, a driving rod at the lower part of the driving mechanism penetrates out from a lower port of the upper fixing sleeve, and the lower fixing sleeve is fixed on the driving rod; the buffer mechanism is arranged between the driving mechanism and the clutch mechanism; when the lower fixed sleeve and the upper fixed sleeve rotate relatively, the buffer mechanism provides restoring force and damping for the driving mechanism, and the clutch mechanism controls the clutch of the restoring force of the buffer mechanism. The utility model discloses set up clutch mechanism about the buffering hinge between the leaf piece, the separation and reunion of clutch mechanism control buffer mechanism restoring force is convenient for can rotate easily when installing the hinge about the leaf piece, simultaneously the utility model discloses improve the structure of inside, damping mechanism can realize the flow freely and adjust, conveniently adjusts the speed that opens and shuts, the utility model has the characteristics of compact structure, regulation convenience, function are various.

Description

Take clutching mechanism's buffering hinge

Technical Field

The utility model relates to a hinge specifically is a take clutching mechanism's buffering hinge.

Background

The hinge is swing joint between mainly used door and window and door frame or the window frame, and traditional hinge is formed on the axle center by door frame hinge and door leaf hinge, only has the function of rotatory activity, adopts the tradition to close the face owing to there is not damping effect, can not prevent wind and close too fast simultaneously and can strike the door frame, also has the potential safety hazard simultaneously.

For this people have designed buffering hinge, disclose a hydraulic pressure buffering hinge like notice number CN 06837042B, including the axle sleeve, with axle sleeve looks articulated door frame page or leaf and locate the axle center in the axle sleeve, the axle sleeve overcoat is equipped with the door leaf page or leaf that is connected with the axle center, its characterized in that: one end of the shaft core is provided with a guide part; the guide part is sleeved with a piston clamped with the guide part; an energy storage spring is sleeved outside the shaft core; one end of the energy storage spring is abutted against the upper end of the shaft core, and the other end of the energy storage spring is abutted against the piston; two sides of the piston are provided with mutually symmetrical lead grooves; a rolling sleeve pin is erected in the shaft sleeve and penetrates through the lead grooves on the two sides of the piston, and a rolling sleeve matched with the lead grooves is sleeved outside the rolling sleeve pin; the lead groove is spiral; the upper part of the lead groove is an opening and closing groove, the middle part of the lead groove is a door stopping groove, and the lower part of the lead groove is a buffer groove; positioning notches matched with the rolling sleeves are formed in the two sides of the middle of the lead groove; an adjusting seat is fixed at the lower end port of the shaft sleeve; an adjusting screw is screwed on the adjusting seat; the adjusting screw is connected with an oil needle; an oil needle sleeve is fixed at the bottom of the piston; the oil needle sleeve is provided with a damping hole matched with the oil needle; a damping channel is formed by a gap between the damping hole and the oil needle; the oil needle comprises an upper needle body and a lower needle body, the diameter of the upper needle body is larger than that of the lower needle body, and a step is formed between the upper needle body and the lower needle body; the oil needle sleeve is provided with a one-way valve; hydraulic oil is filled in a cavity formed between the shaft sleeve and the piston; the oil needle sleeve is provided with an auxiliary oil groove which is in a half-cake shape; the damping hole is positioned in the middle of the auxiliary oil groove and communicated with the auxiliary oil groove.

The left and right hinge plates of the hinge need to be opened when the hinge is installed, and the hinge plate is difficult to open due to the elasticity of the energy storage spring which is arranged in the structure; in addition, the damping mechanism in the structure can not freely adjust the opening and closing speed, and can not well meet the requirements of consumers.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take clutching mechanism's buffering hinge sets up clutching mechanism between the page or leaf piece about the buffering hinge, and the separation and reunion of clutching mechanism control buffer mechanism restoring force is convenient for can rotate easily when installing the hinge about the page or leaf piece, simultaneously the utility model discloses improve the structure of inside, damping mechanism can realize the flow and freely adjust, conveniently adjusts the speed that opens and shuts, the utility model has the characteristics of compact structure, adjust convenient, the function is various.

The following technical scheme is adopted for achieving the purpose:

the utility model provides a take clutching mechanism's buffering hinge, is including coaxial relative pivoted left hinge piece and right hinge piece, the left sleeve pipe that is equipped with of left side hinge piece one side, one side of right hinge piece is equipped with right sleeve pipe, its characterized in that: the left sleeve is sleeved on the upper fixing sleeve, the right sleeve is sleeved on the lower fixing sleeve, the upper fixing sleeve and the lower fixing sleeve are coaxially arranged, a driving mechanism, a buffer mechanism and a clutch mechanism are arranged in the upper fixing sleeve, a driving rod at the lower part of the driving mechanism penetrates out of a lower port of the upper fixing sleeve, and the lower fixing sleeve is fixed on the driving rod; the buffer mechanism is arranged between the driving mechanism and the clutch mechanism; when the lower fixed sleeve and the upper fixed sleeve rotate relatively, the buffer mechanism provides restoring force and damping for the driving mechanism, and the clutch mechanism controls the clutch of the restoring force of the buffer mechanism.

The driving mechanism comprises a driving sleeve, the upper part of the driving sleeve is provided with an axial cavity, a piston rod is arranged in the axial cavity, a spiral groove is formed in the side wall of the axial cavity, a driving pin is arranged on the piston rod, and the axial direction of the driving pin is perpendicular to the axial direction of the axial cavity; two ends of the driving pin penetrate through the spiral groove and are accommodated in the axial groove on the inner wall of the upper fixed sleeve; the lower part of the driving sleeve is provided with a driving rod along the axial direction, the driving rod penetrates out of the upper fixing sleeve from the lower port of the upper fixing sleeve, and the lower fixing sleeve is fixed on the driving rod.

The buffering mechanism comprises a piston head arranged at the upper end of the piston rod, the outer edge part of the piston head is in sealing fit with the inner wall of the upper fixing sleeve, the piston head separates the inner cavity of the upper fixing sleeve into an upper cavity and a lower cavity, a damping cavity is formed in the piston head, a damping control valve is arranged in the damping cavity, the upper cavity is communicated with the lower cavity through the damping cavity, the damping control valve is switched on and off through the damping cavity and the flow path, the inner cavity of the upper fixing sleeve is filled with hydraulic oil, an adjusting hole axially penetrating through the driving rod is formed in the driving rod, and the adjusting hole upwards penetrates through the piston rod and is communicated with the damping cavity 34; and the lower end of the adjusting hole is provided with an adjusting knob, and the adjusting knob is connected with the damping control valve through an adjusting rod.

The damping control valve comprises a fixed valve block and a rotating valve block, the rotating valve block and the fixed valve block are attached to each other, a flow regulating hole is formed in the position, corresponding to the fixed valve block, of the rotating valve block, a control rotating shaft extending downwards is arranged in the center of the bottom of the rotating valve block, a control hole is formed in the control rotating shaft from bottom to top, the upper end of the adjusting rod is accommodated in the control hole, the adjusting rod can rotate to drive the rotating valve block to rotate axially, the rotating valve block can rotate to change the overlapping area of the flow regulating hole between the rotating valve block and the fixed valve block, and further the flow path size of the damping cavity can be changed.

The bottom of the damping cavity is provided with a flow passage hole, the flow passage hole is communicated with the damping cavity and the lower cavity, the upper port of the damping cavity is communicated with the upper cavity, a limiting convex rib is arranged in the damping cavity, the outer edge part of the rotating valve plate is provided with a limiting groove matched with the limiting convex rib, the upper port of the damping cavity is provided with an annular groove, the outer diameter of the fixed valve plate is matched with the inner diameter of the annular groove, the inner wall of the annular groove is provided with a positioning groove, and the outer edge of the fixed valve plate is provided with a positioning convex rib matched with the positioning groove; a sealing ring is arranged between the fixed valve plate and the bottom surface of the annular groove; the flow regulating hole is positioned in the sealing ring.

An oil seal is arranged between the driving rod and the inner wall of the lower port of the upper fixed sleeve; and an oil seal is arranged between the adjusting knob and the inner wall of the adjusting hole.

Clutch device include reset spring, the reset spring lower extreme is connected with actuating mechanism and buffer gear, the reset spring upper end supports at a gasket bottom surface, last fixed sheathe port is provided with and hinders the head, hinder and be provided with clutch spring between head and the gasket, clutch spring's elasticity is less than reset spring's elasticity far away, hinders the head and has seted up the axial screw along the axis direction, axial screw department has connect the separation and reunion screw rod soon, the separation and reunion screw rod can support the gasket and extrude reset spring through the rotation.

The outer wall of the upper fixed sleeve is provided with a rotation stopping convex rib corresponding to the position of the left sleeve; the outer wall of the lower fixing sleeve is also provided with a rotation stopping convex rib.

And a plane bearing is arranged between the left sleeve and the right sleeve.

The driving rod is provided with a rotation stopping plane, and the shaft hole of the lower fixing sleeve is provided with a rotation stopping part matched with the rotation stopping plane.

The piston rod is provided with a pin hole, the driving pin penetrates through the pin hole and is communicated with the adjusting hole, and the middle part of the driving pin is provided with an avoiding groove for the adjusting rod to pass through.

The utility model discloses having add clutch mechanism, clutch mechanism can control reset spring's restoring force, and clutch mechanism's separation and reunion screw rod only receives clutch spring when controlling leaf piece looks mutual rotation when separating with the gasket, and clutch spring's resistance is less than reset spring far away, consequently when the installation hinge, bare-handed just can open the hinge easily, waits to install the back rotatory separation and reunion screw rod that finishes and withstands the gasket, and clutch spring ineffectiveness, reset spring separation and reunion resume function this moment.

In addition, the damping mechanism of the utility model can freely adjust the size of the flow path, and realize the stepless adjustment of the opening speed so as to meet the requirements of different occasions; the utility model discloses actuating mechanism, buffer gear and clutching mechanism all set up in last fixed cover, to not unidimensional hinge, only need change not unidimensional actuating lever with adjust the pole can, the commonality of part is fine, can practice thrift the cost greatly, improve the price/performance ratio of product.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic front structural view of the present invention;

fig. 3 is a schematic side structure view of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 2 in accordance with the present invention;

fig. 5 is a cross-sectional view taken along line B-B of fig. 3 in accordance with the present invention;

fig. 6 is a schematic structural view of the upper and lower fixing sleeves of the present invention;

fig. 7 is a schematic view of the front structure of the upper and lower fixing sleeves of the present invention;

fig. 8 is a cross-sectional view taken along line C-C of fig. 7 in accordance with the present invention;

fig. 9 is an exploded schematic structural view (one) of the driving mechanism and the damping mechanism of the present invention;

fig. 10 is an exploded schematic structural view (ii) of the driving mechanism and the damping mechanism of the present invention;

fig. 11 is an exploded schematic view of the damping mechanism of the present invention;

fig. 12 is a schematic structural view of the piston head of the present invention.

Detailed Description

As shown in fig. 1-12, a take clutching mechanism's buffering hinge, includes coaxial relative pivoted left hinge piece 8 and right hinge piece 9, be equipped with left sleeve pipe 81 of left hinge piece 8 one side, one side of right hinge piece 9 is equipped with right sleeve pipe 91, its characterized in that: the left sleeve 81 is sleeved on the upper fixing sleeve 1, the right sleeve 91 is sleeved on the lower fixing sleeve 2, the upper fixing sleeve and the lower fixing sleeve are coaxially arranged, a driving mechanism, a buffering mechanism and a clutch mechanism are arranged in the upper fixing sleeve 1, a driving rod 51 at the lower part of the driving mechanism penetrates out of a lower port of the upper fixing sleeve 1, and the lower fixing sleeve 2 is fixed on the driving rod 51; the buffer mechanism is arranged between the driving mechanism and the clutch mechanism; when the lower fixed sleeve 2 and the upper fixed sleeve 1 rotate relatively, the buffer mechanism provides restoring force and damping for the driving mechanism, and the clutch mechanism controls the clutch of the restoring force of the buffer mechanism.

The driving mechanism comprises a driving sleeve 52, the upper part of the driving sleeve 52 is provided with an axial cavity 53, a piston rod 31 is arranged in the axial cavity 53, the side wall of the axial cavity 53 is provided with a spiral groove 54, the piston rod 31 is provided with a driving pin 32, and the axial direction of the driving pin 32 is vertical to the axial direction of the axial cavity 53; both ends of the driving pin 32 pass through the spiral groove 54 and are accommodated in the axial groove 11 of the inner wall of the upper fixing sleeve 1; a driving rod 51 is axially arranged at the lower part of the driving sleeve 52, the driving rod 51 penetrates through the upper fixing sleeve 1 from the lower port of the upper fixing sleeve 1, and the lower fixing sleeve 2 is fixed on the driving rod 51.

The buffer mechanism comprises a piston head 33 arranged at the upper end of a piston rod 31, the outer edge part of the piston head 33 is in sealing fit with the inner wall of the upper fixing sleeve, the piston head 33 separates the inner cavity of the upper fixing sleeve 1 from an upper cavity 12 and a lower cavity 13, a damping cavity 34 is arranged on the piston head 33, a damping control valve is arranged in the damping cavity 34, the upper cavity 12 is communicated with the lower cavity 13 through the damping cavity 34, the damping control valve is switched on and off through the damping cavity 34 and has the flow path size, the inner cavity of the upper fixing sleeve 1 is filled with hydraulic oil, an adjusting hole 55 axially penetrating through the driving rod is arranged on the driving rod 51, and the adjusting hole 55 upwards penetrates through the piston rod 31 to be communicated with the damping cavity 34; an adjusting knob 56 is arranged at the lower end of the adjusting hole 55, and the adjusting knob 56 is connected with the damping control valve through an adjusting rod 57.

The damping control valve comprises a fixed valve plate 35 and a rotating valve plate 36, the rotating valve plate 36 and the fixed valve plate 35 are attached to each other, flow regulating holes are formed in the positions, corresponding to the fixed valve plate 36 and the rotating valve plate 35, of the rotating valve plate 36, a control rotating shaft 37 extending downwards is arranged in the center of the bottom of the rotating valve plate 36, a control hole 38 is formed in the control rotating shaft 37 from bottom to top, the upper end of the regulating rod 57 is contained in the control hole 38, the regulating rod 57 can drive the rotating valve plate 36 to rotate axially through rotation, the rotating valve plate 36 can change the overlapping area of the flow regulating holes between the rotating valve plate 36 and the fixed valve plate 35 through rotation, and further the size of the flow path of the damping cavity 34 can be changed.

The bottom of the damping cavity 34 is provided with a flow passage hole 39, the flow passage hole 39 is communicated with the damping cavity 34 and the lower cavity 13, the upper port of the damping cavity 34 is communicated with the upper cavity 12, a limiting convex rib 40 is arranged inside the damping cavity 34, a limiting groove 41 matched with the limiting convex rib 40 is arranged at the outer edge part of the rotary valve plate 36, an annular groove 42 is arranged at the upper port of the damping cavity 34, the outer diameter of the fixed valve plate 35 is matched with the inner diameter of the annular groove 42, the inner wall of the annular groove 42 is provided with a positioning groove 43, and the outer edge of the fixed valve plate 35 is provided with a positioning convex rib 44 matched with the positioning groove 43; a sealing ring 45 is arranged between the fixed valve plate 35 and the bottom surface of the annular groove 42; the flow regulating hole is located at the inner position of the sealing ring 45.

An oil seal is arranged between the driving rod 51 and the inner wall of the lower port of the upper fixed sleeve 1; an oil seal is arranged between the adjusting knob 56 and the inner wall of the adjusting hole 55.

The piston head 33 above still be provided with reset spring 61, reset spring 61 lower extreme supports on piston head 33, reset spring 61 upper end supports in a gasket 62 bottom surface, be provided with at last fixed cover 1 upper end mouth and hinder head 63, hinder and be provided with clutch spring 64 between head 63 and the gasket 62, clutch spring 64's elasticity is less than reset spring 61's elasticity far away, hinder head 63 and seted up axial screw along the axis direction, axial screw department spiro union has clutch screw 65, clutch screw 65 can support gasket 62 and extrude reset spring 61 through the rotation.

A rotation stopping convex rib 80 is arranged on the outer wall of the upper fixing sleeve 1 corresponding to the position of the left sleeve 81; the outer wall of the lower fixing sleeve 2 is also provided with a rotation stopping convex rib 80.

A flat bearing 90 is provided between the left sleeve 81 and the right sleeve 91.

The driving rod 51 is provided with a rotation stopping plane 511, and the shaft hole of the lower fixing sleeve 2 is provided with a rotation stopping part matched with the rotation stopping plane 511.

The piston rod 31 is provided with a pin hole, the driving pin 32 penetrates through the pin hole, the pin hole is communicated with the adjusting hole 55, and the middle part of the driving pin 32 is provided with an avoiding groove 321 for the adjusting rod 57 to pass through.

When acting force enables the left hinge plate and the right hinge plate to relatively rotate, the driving rod 51 and the driving sleeve 52 rotate to enable the driving pin 32 to move along the spiral groove, the movable rod moves upwards in the groove 11, the piston rod 31 and the piston head 33 are further driven to move upwards, the piston head 33 compresses the return spring 61 upwards, the return spring 61 generates automatic return acting force between the left hinge plate and the right hinge plate, and the return spring 61 can enable the left hinge plate and the right hinge plate to automatically return once the acting force is released; when the left hinge sheet and the right hinge sheet rotate and reset relatively, the damping control valve in the damping cavity 34 controls the opening and closing speed by adjusting the flow path size of the flow adjusting hole, and plays a buffering role by matching with the reset spring; additionally the utility model discloses helicla flute 54 upper end be provided with the anticreep recess, open when the hinge is located the anticreep recess to driving round pin 32, release effort this moment, reset spring 61's restoring force does not make driving round pin 32 break away from the anticreep recess, carries out the state of opening and shutting to the hinge and realizes the location, must plus the effort make driving round pin 32 break away from behind the anticreep recess, then reset spring 61's restoring force could realize automatic re-setting.

The utility model is additionally provided with a clutch mechanism at one end of the reset spring, the clutch mechanism realizes the clutch function through whether the clutch screw 65 contacts with the gasket 62, and when the clutch screw 65 is pressed against the gasket, the clutch spring 64 between the stopper 63 and the gasket 62 does not work; through rotatory clutch screw 65, when making clutch screw 65 and gasket 62 separate, gasket 62 with hinder and rely on clutch spring 64 to support between the head 63, when the hinge piece rotates and makes piston head 33 extrusion reset spring 61, because reset spring 61's elasticity is greater than clutch spring 64's effort far away, compress clutch spring 64 and reset spring does not deform this moment, clutch spring 64 effort is less, consequently, it is very little to provide reaction force, can open two hinge pieces by bare-handed, easy to assemble, after the hinge installation is accomplished, adjust clutch screw 65 to supporting the gasket again, clutch spring loses efficacy this moment, the normal buffer state of hinge recovery.

Additionally the utility model discloses still realize damping device flow and set up regulation function by a wide margin, set up regulation hole 55 on actuating lever 51 and piston rod 31 regulation hole 55 lower extreme be provided with adjust knob 56, adjust knob 56 is connected with the damping control valve through adjusting pole 57, rotates through adjust knob 56 through the rotation valve block 36 that realizes the damping control valve to change the area of flow control hole coincidence between rotation valve block 36 and the fixed valve block 35, and then the damping chamber 34 flow path size that changes, realize the electrodeless regulation of flow, realize the free adjustment by a wide margin of hinge opening and closing speed.

The utility model discloses actuating mechanism, buffer gear and clutching mechanism all set up in last fixed cover, to not unidimensional hinge, only need extend or shorten actuating lever and regulating lever length can, other parts are general completely, consequently can practice thrift the cost greatly, improve the price/performance ratio of product.

Claims

1. The utility model provides a take clutching mechanism's buffering hinge, includes left hinge piece (8) and right hinge piece (9) that can coaxial relative rotation, be equipped with left sleeve pipe (81) of left side hinge piece (8) one side, one side of right hinge piece (9) is equipped with right sleeve pipe (91), its characterized in that: the left sleeve (81) is sleeved on the upper fixing sleeve (1), the right sleeve (91) is sleeved on the lower fixing sleeve (2), the upper fixing sleeve and the lower fixing sleeve are coaxially arranged, a driving mechanism, a buffering mechanism and a clutch mechanism are arranged in the upper fixing sleeve (1), a driving rod (51) at the lower part of the driving mechanism penetrates out of a lower port of the upper fixing sleeve (1), and the lower fixing sleeve (2) is fixed on the driving rod (51); the buffer mechanism is arranged between the driving mechanism and the clutch mechanism; when the lower fixing sleeve (2) and the upper fixing sleeve (1) rotate relatively, the buffer mechanism provides restoring force and damping for the driving mechanism, and the clutch mechanism controls the clutch of the restoring force of the buffer mechanism.

2. The buffer hinge with the clutch mechanism as claimed in claim 1, wherein: the driving mechanism comprises a driving sleeve (52), an axial cavity (53) is formed in the upper portion of the driving sleeve (52), a piston rod (31) is arranged in the axial cavity (53), a spiral groove (54) is formed in the side wall of the axial cavity (53), a driving pin (32) is arranged on the piston rod (31), and the axial direction of the driving pin (32) is perpendicular to the axial direction of the axial cavity (53); two ends of the driving pin (32) penetrate through the spiral groove (54) and are accommodated in the axial groove (11) of the inner wall of the upper fixing sleeve (1); a driving rod (51) is axially arranged at the lower part of the driving sleeve (52), the driving rod (51) penetrates out of the upper fixing sleeve (1) from the lower port of the upper fixing sleeve (1), and the lower fixing sleeve (2) is fixed on the driving rod (51).

3. The buffer hinge with the clutch mechanism as claimed in claim 2, wherein: the buffer mechanism comprises a piston head (33) arranged at the upper end of a piston rod (31), the outer edge part of the piston head (33) is in sealing fit with the inner wall of an upper fixed sleeve, the piston head (33) divides the inner cavity of the upper fixed sleeve (1) into an upper cavity (12) and a lower cavity (13), a damping cavity (34) is formed in the piston head (33), a damping control valve is arranged in the damping cavity (34), the upper cavity (12) is communicated with the lower cavity (13) through the damping cavity (34), the damping control valve is switched on and off and the flow path size of the damping cavity (34), the inner cavity of the upper fixed sleeve (1) is filled with hydraulic oil, an adjusting hole (55) axially penetrating through a driving rod is formed in a driving rod (51), and the adjusting hole (55) upwards penetrates through the piston rod (31) to be communicated with the damping cavity (34); an adjusting knob (56) is arranged at the lower end of the adjusting hole (55), and the adjusting knob (56) is connected with the damping control valve through an adjusting rod (57).

4. The buffer hinge with the clutch mechanism as claimed in claim 3, wherein: the damping control valve comprises a fixed valve plate (35) and a rotating valve plate (36), the rotating valve plate (36) and the fixed valve plate (35) are attached to each other, flow adjusting holes are formed in the positions, corresponding to the fixed valve plate (35), of the rotating valve plate (36), a downward extending control rotating shaft (37) is arranged in the center of the bottom of the rotating valve plate (36), a control hole (38) is formed in the control rotating shaft (37) from bottom to top, the upper end of the adjusting rod (57) is contained in the control hole (38), the adjusting rod (57) can rotate to drive the rotating valve plate (36) to rotate axially, the rotating valve plate (36) can rotate to change the overlapping area of the flow adjusting holes between the rotating valve plate (36) and the fixed valve plate (35), and further the flow path size of the damping cavity (34) can be changed.

5. The buffer hinge with the clutch mechanism as claimed in claim 4, wherein: the bottom of the damping cavity (34) is provided with a flow passage hole (39), the flow passage hole (39) is communicated with the damping cavity (34) and the lower cavity (13), the upper port of the damping cavity (34) is communicated with the upper cavity (12), a limiting convex rib (40) is arranged in the damping cavity (34), the outer edge of the rotary valve plate (36) is provided with a limiting groove (41) matched with the limiting convex rib (40), the upper port of the damping cavity (34) is provided with an annular groove (42), the outer diameter of the fixed valve plate (35) is matched with the inner diameter of the annular groove (42), the inner wall of the annular groove (42) is provided with a positioning groove (43), and the outer edge of the fixed valve plate (35) is provided with a positioning convex rib (44) matched with the positioning groove (43); a sealing ring (45) is arranged between the fixed valve plate (35) and the bottom surface of the annular groove (42); the flow regulating hole is positioned in the inner part of the sealing ring (45).

6. The buffer hinge with the clutch mechanism as claimed in claim 3, wherein: an oil seal is arranged between the driving rod (51) and the inner wall of the lower port of the upper fixed sleeve (1); an oil seal is arranged between the adjusting knob (56) and the inner wall of the adjusting hole (55).

7. The buffer hinge with the clutch mechanism as claimed in claim 3, wherein: clutch mechanism include reset spring (61), reset spring (61) lower extreme is connected with actuating mechanism and buffer gear, reset spring (61) upper end is supported at a gasket (62) bottom surface, it hinders head (63) to be provided with at last fixed cover (1) upper port, it is provided with clutch spring (64) to hinder between head (63) and gasket (62), clutch spring (64)'s elasticity is less than reset spring (61)'s elasticity far away, hinder head (63) and seted up the axial screw along the axis direction, axial screw department has connect clutch screw (65) soon, clutch screw (65) can support gasket (62) and extrusion reset spring (61) through the rotation.

8. The buffer hinge with the clutch mechanism as claimed in claim 1, wherein: a rotation stopping convex rib (80) is arranged on the outer wall of the upper fixing sleeve (1) corresponding to the position of the left sleeve (81); the outer wall of the lower fixing sleeve (2) is also provided with a rotation stopping convex rib (80).

9. The buffer hinge with the clutch mechanism as claimed in claim 1, wherein: a plane bearing (90) is arranged between the left sleeve (81) and the right sleeve (91).

10. The buffering hinge with the clutch mechanism as claimed in any one of claims 1 to 9, wherein: the driving rod (51) is provided with a rotation stopping plane (511), and the shaft hole of the lower fixing sleeve (2) is provided with a rotation stopping part matched with the rotation stopping plane (511).