CN108915444B

CN108915444B - Hinge

Info

Publication number: CN108915444B
Application number: CN201810942121.6A
Authority: CN
Inventors: 伍肇坚
Original assignee: Guangdong Zhaogao Metal Technology Co Ltd
Current assignee: Guangdong Zhaogao Metal Technology Co Ltd
Priority date: 2018-08-17
Filing date: 2018-08-17
Publication date: 2024-05-03
Anticipated expiration: 2038-08-17
Also published as: CN108915444A

Abstract

The invention provides a hinge, comprising: concave page, the boss, the driving sleeve, go up the adapter sleeve, lower adapter sleeve, the swivel housing, the interior axle, pressure spring, concave page and boss form articulated through last adapter sleeve and lower adapter sleeve, the swivel housing contains axostylus axostyle portion and helicla flute section of thick bamboo portion, axostylus axostyle portion passes last adapter sleeve, and the upper portion of axostylus axostyle portion inserts the driving sleeve, axostylus axostyle portion and driving sleeve form axial sliding connection and synchronous pivoted cooperation structure, two helicla flute have been seted up to the barrel axisymmetric of helicla flute section of thick bamboo portion, protruding page circular tube axisymmetric is provided with the installation department, the drive shaft passes the helicla flute, the installation department is inserted at the both ends of drive shaft, the interior axle is connected with the lower part of helicla flute section of thick bamboo portion, interior axle shaft suit pressure spring between the lower terminal surface of helicla flute section of thick bamboo portion to the up end of lower adapter sleeve. By using the technical scheme of the invention, energy storage is provided by using a pressure spring mode, and the page can be installed without being separated from left and right by using the spiral groove reset structure, so that the structure is simple and convenient to install and maintain.

Description

Hinge

Technical Field

The invention relates to the field of door and window hardware fittings, in particular to a hinge.

Background

The hinge of closing door certainly in the existing market mainly uses torsion spring to restore to the throne, torsion spring restoring to the throne the hinge and is easy to break at in-service use wire rod intensity height torsional spring foot, and intensity low wire rod is easy to loosen, causes to close the inefficacy certainly, and other pressure spring restoring from closing door hinge will divide left and right directions installation moreover, can not control pressure spring and can release moreover, and the hinge is in closed state owing to receiving spring pressure, needs the manual work to continue to open left and right hinges when installing, brings inconvenience for the user.

Disclosure of Invention

The embodiment of the invention provides a hinge, the technical scheme provided by the embodiment is used for storing energy by using a pressure spring, the hinge can be installed without being separated from the left and right directions by using a spiral groove reset structure, the energy release of the pressure spring can be controlled, the structure is reasonable, the installation is convenient, the maintenance and the replacement are easy, and the living needs of the modern society can be met.

The aim of the embodiment of the invention is realized by the following technical scheme:

the invention provides a hinge, comprising: the device comprises a concave page 1, a convex page 2, a transmission sleeve 3, an upper connection sleeve 4, a lower connection sleeve 5, a spiral sleeve 6, an inner shaft 7 and a pressure spring 8, wherein the concave page 1 and the convex page 2 are hinged through the upper connection sleeve 4 and the lower connection sleeve 5, the concave page 1 comprises a concave page sheet 101, an upper end circular tube body 102 connected with the upper edge of the concave page sheet 101 and a lower end circular tube body 103 connected with the lower edge of the concave page sheet 101, the convex page 2 comprises a convex page sheet 201 and a convex page circular tube body 202 connected with the edge of the convex page sheet 201, the transmission sleeve 3 is fixedly arranged on the upper part of the inner cavity of the upper end circular tube body 102, the upper part of the upper connection sleeve 4 stretches into the inner cavity of the concave page 1 circular tube body 102, the lower part of the upper connection sleeve 4 stretches into the inner cavity of the convex page circular tube body 202 and is fixedly connected with the lower edge of the concave page sheet 101, the spiral sleeve 6 comprises a spiral sleeve 601 and a spiral groove shaft 602, the upper part of the spiral sleeve 602 is symmetrically arranged on the upper side of the spiral sleeve 3, the upper end of the spiral sleeve 602 is inserted into the upper end surface of the spiral sleeve 602, the upper end of the spiral sleeve 602 is symmetrically arranged on the lower end surface of the spiral sleeve 602, and the upper end of the spiral sleeve 602 is inserted into the spiral sleeve 602, the upper end surface of the spiral sleeve 602 is axially matched with the upper end surface of the spiral sleeve 602, and the lower end surface of the spiral sleeve 602 is axially inserted into the upper end of the spiral sleeve 602, and the upper end of the upper end sleeve 602 is axially matched with the upper end of the upper end sleeve 602, and the lower end of the upper end of the spiral sleeve 602 is axially, the lower end of the upper end of the spiral sleeve is inserted with the lower end of the spiral sleeve is inserted, and the lower end of the joint sleeve is made.

Further, the pair of mounting portions 2011 are a pair of first through holes formed in the boss circular tube 202 so as to be axisymmetric with each other.

The specific way of connecting the inner shaft 7 to the lower part of the spiral groove drum 602 is: a pair of second through holes 6022 are axially symmetrically arranged at the lower part of the barrel of the spiral groove barrel 602, a transverse through hole is arranged at the upper end part of the inner shaft 7, the upper end part of the inner shaft 7 extends into the lower part of the barrel of the spiral groove barrel 602, and the pin 604 penetrates through the second through holes 6022 and the transverse through hole.

Further, the drive shaft 2012 is fitted with 1 or more circular tubular sliding sleeves 2013 in the cylindrical portion of the spiral groove 6021.

Further, the shaft body of the inner shaft 7 is sleeved with a sleeve, and the sleeve is positioned between the pressure spring 8 and the inner shaft 7.

Further, the spiral groove 6021 includes a section inclined to the axis and a section perpendicular to the axis.

Further, a groove is provided in the section perpendicular to the axis.

Further, the upper portion of the upper connecting sleeve 4 is provided with a reducing, and a first rolling bearing 901 is arranged between the upper portion of the upper connecting sleeve 4 and the inner wall of the upper end circular tube body 102.

Further, the upper portion of the lower connecting sleeve 5 is provided with a reducing, and a second rolling bearing 902 is arranged between the upper portion of the lower connecting sleeve 5 and the inner wall of the convex page circular tube 202.

Further, a first planar bearing 1001 is disposed between the upper end surface of the convex circular tube 202 and the lower end surface of the upper circular tube 102, and a second planar bearing 1002 is disposed between the lower end surface of the convex circular tube 202 and the upper end surface of the lower circular tube 103.

Further, the shaft portion 601 and the driving sleeve 3 form a matching structure of axial sliding connection and synchronous rotation in the following specific ways: the upper portion of axostylus axostyle portion 601 is spline shaft 6011, and driving sleeve 3 inside has seted up the spline groove 301 of adaptation, realizes synchronous rotation and axial sliding connection through the cooperation of spline shaft 6011 and spline groove 301 between axostylus axostyle portion 601 and the driving sleeve 3.

Further, a hydraulic buffer mechanism is arranged in the inner cavity of the lower connecting sleeve 5, and one end of the hydraulic buffer mechanism is connected with the inner shaft 7.

Further, the hydraulic buffer mechanism comprises an oil cylinder cover 1101, a piston 1102 and an oil seal 1103, the oil cylinder cover 1101 is connected with the lower end part of the lower connecting sleeve 5, the piston 1102 is arranged at the lower end part of the inner shaft 7, the oil seal 1103 is arranged between the inner wall of the lower connecting sleeve 5 and the inner shaft 7, a space between the lower end surface of the oil seal 1103 and the upper end surface of the piston 1102 is a pressurized oil cavity 1105, a space between the lower end surface of the piston 1102 and the bottom of the oil cylinder cover 1101 is an oil storage cavity 1104, and a specific mode that one end of the hydraulic buffer mechanism is connected with the inner shaft 7 is that the inner shaft 7 passes through the oil seal 1103 and the lower end part of the inner shaft 7 is connected with the piston 1102.

Further, the hydraulic buffer mechanism comprises an independent oil cylinder 701 arranged in the inner cavity of the lower connecting sleeve 5, and a piston rod of the independent oil cylinder 701 is an inner shaft 7.

Further, the upper end circular tube 102 is provided with a pressure opening mechanism including a pressing member for pressing the shaft portion 601 in, and a fixing member for fixing the pressing member at a desired position.

Further, the fixing member is an upper cover 1201 provided with a screw hole in the axial direction, and the pressing member is a pressing screw 1202 screwed with the screw hole.

Further, a snap spring 1203 is provided at the upper portion of the screw hole.

Further, an upper decorative cover is provided at the upper end of the upper round tube 102, and a lower decorative cover is provided at the lower end of the lower round tube 103.

By using the technical scheme of the invention, energy storage is provided by using a pressure spring mode, and the page can be installed without being separated from left and right by using the spiral groove reset structure, and the pressure opening mechanism is arranged to facilitate the opening of the hinge, so that the structure is simple, and the installation and the maintenance are convenient.

Drawings

FIG. 1 is a schematic cross-sectional view of a first embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a second embodiment of the present invention;

FIG. 3 is a schematic view of the hinge of the embodiment of FIG. 2 in a closed configuration;

FIG. 4 is a schematic cross-sectional view of the embodiment of FIG. 2 replaced with a separate cylinder

FIG. 5 is a schematic cross-sectional view of the embodiment of FIG. 2 using a control screw;

FIG. 6 is a schematic view of the structure of the screw boss in the above embodiment;

fig. 7 is a schematic structural view of the transmission sleeve in the above embodiment.

In the figure: 1. concave pages; 101. A concave page sheet; 102. an upper end circular tube body; 103. a lower end circular tube body; 2. A raised page; 201. a raised page sheet; 2011. a mounting part; 2012. a drive shaft; 2013. a sliding sleeve; 202. A convex round tube body; 3. a transmission sleeve; 301. spline grooves; 4. an upper connecting sleeve; 5. a lower connecting sleeve; 6. a spiral sleeve; 601. A shaft lever portion; 6011. a spline shaft; 602. a spiral groove cylinder portion; 6021. a spiral groove; 6022. a second through hole; 603. A pin; 7. an inner shaft; 701. an independent oil cylinder; 8. a pressure spring; 901. a first rolling bearing; 902. a second rolling bearing; 1001. A first planar bearing; 1002. a second planar bearing; 1101. an oil cylinder cover; 1102. a piston; 1103. an oil seal; 1104. an oil storage chamber; 1105. a pressurized oil chamber; 1201. An upper cover; 1202. pushing the screw; 1203. and (5) clamping springs.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below by referring to the accompanying drawings and examples. Please refer to fig. 1-7 for reading.

Embodiment one:

Referring to fig. 1, 2, 3, 6, and 7, there are shown:

The invention provides a hinge, comprising: the concave page 1, the convex page 2, the transmission sleeve 3, the upper connecting sleeve 4, the lower connecting sleeve 5, the spiral sleeve, the inner shaft 7 and the pressure spring 8, wherein the concave page 1 and the convex page 2 are hinged through the upper connecting sleeve 4 and the lower connecting sleeve 5, the concave page 1 comprises a concave page sheet 101, an upper end circular tube body 102 connected with the upper edge of the concave page sheet 101 and a lower end circular tube body 103 connected with the lower edge of the concave page sheet 101, the convex page 2 comprises a convex page sheet 201 and a convex page circular tube body 202 connected with the edge of the convex page sheet 201, the transmission sleeve 3 is fixedly arranged on the upper part of the inner cavity of the upper end circular tube body 102, the upper part of the upper connecting sleeve 4 stretches into the inner cavity of the upper end circular tube body 102 of the concave page 1, the lower part of the upper connecting sleeve 4 stretches into the inner cavity of the convex page circular tube body 202 and is fixedly connected, the upper part of the lower connecting sleeve 5 stretches into the inner cavity of the convex page circular tube body 202, the lower part of the lower connecting sleeve 5 stretches into the inner cavity of the lower end circular tube body 103 of the concave page 1 and is fixedly connected, the spiral shaft sleeve comprises a shaft rod part 601 and a spiral groove tube part 602, the shaft rod part 601 penetrates through the upper connecting sleeve 4, the upper part of the shaft rod part 601 is inserted into the transmission sleeve 3, the shaft rod part 601 and the transmission sleeve 3 form an axially sliding connection and synchronously rotating matching structure, the cylinder body of the spiral groove tube part 602 is axially symmetrically provided with two spiral grooves 6021, the convex page circular tube body 202 is axially symmetrically provided with a pair of mounting parts 2011, a driving shaft 2012 penetrates through the spiral grooves 6021, two ends of the driving shaft 2012 are inserted into the mounting parts 2011, the inner shaft 7 is connected with the lower part of the spiral groove tube part 602, a pressure spring 8 is sleeved on the column body of the inner shaft 7 between the lower end surface of the spiral groove tube part 602 and the upper end surface of the lower connecting sleeve 5, and the lower part of the inner shaft 7 is inserted into the connecting sleeve 5.

In this embodiment, the inner hole of the driving sleeve is provided with an anti-rotation mechanism, and teeth in the same direction as the axis can be provided in the inner hole, and the shaft body of the shaft portion inserted into the inner hole portion is provided with a tooth socket or tooth matched with the teeth.

In this embodiment, the concave page moves synchronously with the driving sleeve, the shaft portion, the spiral groove cylinder portion and the lower connecting sleeve, and the convex page moves synchronously with the upper connecting sleeve and the driving shaft.

In the invention, the convex page refers to the image expression formed by the convex page sheet and a convex page round tube body, the concave page refers to the concave page sheet, an upper round tube body connected with the upper edge of the concave page sheet and a lower round tube body connected with the lower edge of the concave page sheet, and the convex page and the concave page are mutually matched in shape. The specific shape of the male and female leaves is determined according to the connection requirements of the installed door leaf or door frame.

In this embodiment, the actual application scenario is as follows:

When the hinge is opened by external force, the concave page and the convex page relatively rotate outwards along the axis, and as the concave page and the transmission sleeve, the shaft lever part, the spiral groove cylinder part and the lower connecting sleeve synchronously move, and the convex page and the upper connecting sleeve and the driving shaft synchronously move, the driving shaft rotates in the spiral groove, namely slides upwards along the axial direction of the spiral groove, the spiral groove cylinder part is pressed to generate axial downward movement, and the pressure spring sleeved on the column body of the inner shaft 7 between the lower end surface of the spiral groove cylinder part 602 and the upper end surface of the lower connecting sleeve 5 is extruded by the lower end surface of the spiral groove cylinder part 602 so as to retract and store energy; when the external force for opening the hinge is eliminated, the pressure spring releases the pressure to push the spiral groove cylinder part to move upwards, the driving shaft slides along the spiral groove in a descending way, so that the spiral groove cylinder part 602 performs axial upward and rotational movement, and the hinge is automatically closed.

By using the technical scheme, the hinge can be installed in the left-right direction without dividing by utilizing the pressure spring energy storage and spiral groove resetting structure, the structure is reasonable, the production is convenient, the use is also convenient, the maintenance and the replacement are easy, the common problem of resetting by using the torsion spring is solved, and the living needs of the modern society can be met.

Further, the pair of mounting portions 2011 are a pair of first through holes formed in the boss circular tube 202 so as to be axisymmetric with each other. The mounting part may be a concave pit and a through hole which are axially symmetrically arranged on the pipe body of the convex circular pipe body 202, so long as the driving shaft is firmly and perpendicularly arranged on the convex circular pipe body 202 with the axis of the convex circular pipe body 202, the mounting part is designed into the through hole, and the manufacturing and the mounting are convenient.

The specific way of connecting the inner shaft 7 to the lower part of the spiral groove drum 602 is: a pair of second through holes 6022 are axially symmetrically provided at the lower part of the body of the spiral groove barrel 602, a transverse through hole is provided at the upper end part of the inner shaft 7, the upper end part of the inner shaft 7 extends into the lower part of the body of the spiral groove barrel 602, and the pin 603 passes through the second through holes 6022 and the transverse through hole. Connecting the inner shaft 7 with the helical grooved drum 602 in this way is easy to manufacture and install.

Further, the drive shaft 2012 is fitted with 1 or more circular tubular sliding sleeves 2013 in the cylindrical portion of the spiral groove 6021. The sliding sleeve is arranged, so that sliding friction between the driving shaft and the spiral groove is changed into rolling friction, the service life of the part is prolonged, and noise is reduced.

Further, the shaft body of the inner shaft 7 is sleeved with a sleeve, and the sleeve is positioned between the pressure spring 8 and the inner shaft 7. The sleeve is used, so that direct friction does not occur between the pressure spring and the inner shaft, the service life of the part is prolonged, and noise is reduced.

Further, the spiral groove 6021 includes a section inclined to the axis and a section perpendicular to the axis. The section inclined to the axis is used for opening and closing the door leaf, compressing or relaxing the pressure spring, and the section perpendicular to the axis is used for enabling the hinge to be in a normally open state when two ends of the driving shaft are positioned at the section.

Further, a groove is provided in the section perpendicular to the axis. The groove is used for playing a role of door suction and stabilizing the door leaf when the groove is clamped with the driving shaft.

The first rolling bearing has the function of enabling the convex page sheet and the concave page sheet to form rolling hinge connection, so that the hinge is opened and closed more smoothly, and abrasion is reduced. The same is true of the function of the second rolling bearing.

The first plane bearing and the second plane bearing have the functions of reducing abrasion between the end face of the convex page circular pipe body and the end face of the upper end circular pipe body and the end face of the lower end circular pipe body of the concave page, and enabling the hinge to be opened and closed more smoothly.

Further, the shaft portion 601 and the driving sleeve 3 form a matching structure of axial sliding connection and synchronous rotation in the following specific ways: the upper portion of axostylus axostyle portion 601 is spline shaft 6011, and transmission cover 3 inside has seted up the spline groove 301 of adaptation, realizes synchronous rotation and axial sliding connection through the cooperation of spline shaft 6011 and spline groove 301 between axostylus axostyle portion 601 and the axostylus axostyle portion 601.

The spline shaft and the spline groove are matched, so that the transmission sleeve and the shaft rod part can realize synchronous rotation and axial sliding connection more accurately, and parts are convenient to process.

Embodiment two:

As shown in fig. 2-7:

the inner cavity of the lower connecting sleeve 5 is provided with a hydraulic buffer mechanism, and one end of the hydraulic buffer mechanism is connected with the inner shaft 7.

In this embodiment, in addition to having the advantages of the first embodiment, the closing speed of the door leaf can be effectively controlled by using the hydraulic buffer mechanism, and the door closing noise can be reduced.

More specifically, the method comprises the steps of,

The hydraulic buffer mechanism comprises an oil cylinder cover 1101, a piston 1102 and an oil seal 1103, wherein the oil cylinder cover 1101 is connected with the lower end part of a lower connecting sleeve 5, the piston 1102 is arranged at the lower end part of an inner shaft 7, the oil seal 1103 is arranged between the inner wall of the lower connecting sleeve 5 and the inner shaft 7, a space between the lower end surface of the oil seal 1103 and the upper end surface of the piston 1102 is a pressurized oil cavity 1105, a space between the lower end surface of the piston 1102 and the bottom of the oil cylinder cover 1101 is an oil storage cavity 1104, and a specific mode that one end of the hydraulic buffer mechanism is connected with the inner shaft 7 is that the inner shaft 7 passes through the oil seal 1103 and the lower end part of the inner shaft 7 is connected with the piston 1102.

When the hinge is opened by external force, the convex page and the concave page rotate relatively outwards along the axis, and the concave page and the transmission sleeve, the shaft rod part, the spiral groove cylinder part and the lower connecting sleeve synchronously move, while the convex page and the upper connecting sleeve and the driving shaft synchronously move, so that the driving shaft rotates in the spiral groove, namely slides upwards along the axial direction of the spiral groove, the spiral groove cylinder part is pressed to generate axial downward movement, the pressure spring sleeved on the column body of the inner shaft 7 between the lower end surface of the spiral groove cylinder part 602 and the upper end surface of the lower connecting sleeve 5 is extruded by the lower end surface of the spiral groove cylinder part 602 to retract and store energy, and meanwhile, the piston rod of the hydraulic buffer mechanism moves downwards along the axial direction, and the piston is pushed to enable hydraulic oil in the oil storage cavity to flow to the pressurized oil cavity. When the external force for opening the hinge is eliminated, the pressure spring releases the pressure to push the spiral groove cylinder part to move upwards, the driving shaft slides along the spiral groove in a descending way, so that the spiral groove cylinder part 602 performs axial upward and rotational movement, and the hinge is automatically closed. The inner shaft lifts the piston to enable hydraulic oil in the pressurized oil cavity to flow to the oil storage cavity, so that the speed of the inner shaft moving upwards is controlled, and hydraulic buffering closing is achieved.

Similarly, the hydraulic buffer mechanism may be provided as follows: namely, the hydraulic buffer mechanism comprises an independent oil cylinder 701 arranged in the inner cavity of the lower connecting sleeve 5, and a piston rod of the independent oil cylinder 701 is an inner shaft 7. The independent oil cylinder has the advantage of more convenient combination production and installation.

Embodiment III:

see fig. 1-7:

In this embodiment, when the pressure opening mechanism is used, the user rotates the pushing screw 1202 with the adapting tool, so that the lower end surface of the pushing screw 1202 abuts against the upper end surface of the shaft lever part 601, so that the shaft lever part 601 moves downward, the driving shaft rotates in the spiral groove, that is, slides upwards along the axial direction of the spiral groove, and presses the cylindrical part of the spiral groove to make it move downwards along the axial direction, the male leaf sheet and the female leaf sheet are opened along the axial direction, the opened state is a fixed state, and the user can conveniently install the hinge at this time; after the installation is completed, the pushing screw 1202 is retracted, so that the lower end surface of the pushing screw 1202 is not abutted against the upper end surface of the shaft lever portion 601, and the hinge can enter a normal working state. The provision of the pressure opening mechanism allows the user to install the hinge very conveniently without the need for additional effort to continue opening the leaf.

Further, as shown in fig. 1, a clamp spring 1203 is disposed at the upper portion of the threaded hole, and the clamp spring 1203 is used for preventing the ejection screw 1202 from being ejected. Thus, the pushing screw 1202 can fix the back dead point, and the working state of the hinge is stable in the future use process.

Further, an upper decorative cover is provided at the upper end of the upper round tube 102, and a lower decorative cover is provided at the lower end of the lower round tube 103. The upper decorative cover can be provided with the upper sealing cover, namely, the upper sealing cover and the upper decorative cover can be independently arranged, and the upper sealing cover can also be provided with the upper decorative cover. The lower decorative cover can be embodied by the oil cylinder sealing cover, namely, the oil cylinder sealing cover and the lower decorative cover can be independent, and the oil cylinder sealing cover can also embody the function of the lower decorative cover.

The upper decorative cover and the lower decorative cover are used for beautifying, and protecting internal parts and preventing dust accumulation.

In the present invention, the shaft portion 601 and the screw boss may be integrally manufactured. Thus, the processing and the installation are also convenient.

The hinge provided by the invention is described in detail, and specific examples are applied to illustrate the principle and the implementation mode of the invention, and the description of the examples is only used for helping to understand the core idea of the invention; meanwhile, as those skilled in the art will vary in the specific embodiments and application scope according to the idea of the present invention, the present disclosure should not be construed as limiting the present invention in summary.

Claims

1. A hinge, comprising: the concave page (1), the convex page (2), the transmission sleeve (3), the upper connection sleeve (4), the lower connection sleeve (5), the spiral sleeve (6), the inner shaft (7) and the pressure spring (8), the concave page (1) and the convex page (2) are hinged through the upper connection sleeve (4) and the lower connection sleeve (5), the concave page (1) comprises a concave page sheet (101), an upper end circular tube body (102) connected with the upper edge of the concave page sheet (101) and a lower end circular tube body (103) connected with the lower edge of the concave page sheet (101), the convex page (2) comprises a convex page circular tube body (201) and a convex page circular tube body (202) connected with the edge of the convex page sheet (201), the transmission sleeve (3) is fixedly arranged at the upper part of the inner cavity of the upper end circular tube body (102), the upper part of the upper connection sleeve (4) stretches into the inner cavity of the concave page circular tube body (102), the upper part of the upper connection sleeve (4) stretches into the inner cavity of the circular tube body (103) and the lower end circular tube body (202) stretches into the inner cavity of the concave page (5) to be fixedly connected with the lower end circular tube body (202) of the concave page (1), the spiral shaft sleeve (6) comprises a shaft rod part (601) and a spiral groove cylinder part (602), the shaft rod part (601) penetrates through the upper connecting sleeve (4), the upper part of the shaft rod part (601) is inserted into the transmission sleeve (3), the shaft rod part (601) and the transmission sleeve (3) form a matched structure of axially sliding connection and synchronous rotation, two spiral grooves (6021) are formed in the cylinder body of the spiral groove cylinder part (602) in an axisymmetric mode, a pair of mounting parts (2011) are formed in the convex-page circular cylinder body (202) in an axisymmetric mode, a driving shaft (2012) penetrates through the spiral grooves (6021), two ends of the driving shaft (2012) are inserted into the mounting parts (2011), the inner shaft (7) is connected with the lower part of the spiral groove cylinder part (602), the lower end face of the spiral groove cylinder part (602) is sleeved with a column body of the inner shaft (7) between the upper end face of the lower connecting sleeve (5), and the lower part of the inner shaft (7) is inserted into the lower connecting sleeve (5);

The shaft rod part (601) and the transmission sleeve (3) form an axial sliding connection and synchronous rotation matching structure, and the concrete structure is as follows:

The shaft rod part (601) and the transmission sleeve (3) form a matched structure of axial sliding connection and synchronous rotation in the following concrete modes: the upper part of the shaft rod part (601) is provided with a spline shaft (6011), an adaptive spline groove (301) is formed in the transmission sleeve (3), and the shaft rod part (601) and the spline shaft (6011) are synchronously rotated and axially connected in a sliding mode through the cooperation of the spline shaft (6011) and the spline groove (301);

The inner cavity of the lower connecting sleeve (5) is provided with a hydraulic buffer mechanism, and one end of the hydraulic buffer mechanism is connected with the inner shaft (7).

2. A hinge according to claim 1, wherein said pair of mounting portions (2011) is a pair of first through holes formed in the cylindrical body (202) of the male hinge and arranged axially symmetrically on the body.

3. A hinge according to claim 1, characterized in that said inner shaft (7) is connected to the lower portion of said spiral-grooved drum (602) in such a way as to: the lower part of the barrel body of the spiral groove barrel part (602) is axially symmetrically provided with a pair of second through holes (6022), the upper end part of the inner shaft (7) is provided with a transverse through hole, the upper end part of the inner shaft (7) stretches into the lower part of the barrel body of the spiral groove barrel part (602), and the pin (604) penetrates through the second through holes (6022) and the transverse through holes.

4. A hinge according to claim 1, wherein the shaft (2012) is fitted with more than 1 circular tubular sliding sleeve (2013) in the shaft of the helical groove (6021).

5. A hinge according to claim 1, characterized in that the shaft body of the inner shaft (7) is sleeved with a sleeve, which sleeve is located between the pressure spring (8) and the inner shaft (7).

6. A hinge according to claim 1, characterized in that said helical groove (6021) comprises a section inclined to the axis and a section perpendicular to the axis.

7. A hinge according to claim 6, wherein the section perpendicular to the axis is provided with grooves.

8. A hinge according to claim 1, characterized in that the upper part of the upper connecting sleeve (4) is provided with a reduced diameter, and a first rolling bearing (901) is arranged between the upper part of the upper connecting sleeve (4) and the inner wall of the upper end circular tube body (102).

9. A hinge according to claim 8, characterized in that the upper part of the lower connecting sleeve (5) is provided with a reduced diameter, and a second rolling bearing (902) is arranged between the upper part of the lower connecting sleeve (5) and the inner wall of the male round tube (202).

10. A hinge as claimed in any one of claims 1,2, 3, 4, 5, 6, 7, 8, 9, wherein a first planar bearing (1001) is provided between an upper end face of the boss circular tube body (202) and a lower end face of the upper circular tube body (102), and a second planar bearing (1002) is provided between a lower end face of the boss circular tube body (202) and an upper end face of the lower circular tube body (103).

11. A hinge as claimed in any one of claims 1, 2, 3, 4, 5, 6, 7, 8, 9, wherein the hydraulic buffer mechanism comprises a cylinder cover (1101), a piston (1102) and an oil seal (1103), the cylinder cover (1101) is connected with the lower end of the lower connecting sleeve (5), the piston (1102) is arranged at the lower end of the inner shaft (7), the oil seal (1103) is arranged between the inner wall of the lower connecting sleeve (5) and the inner shaft (7), the space between the lower end surface of the oil seal (1103) and the upper end surface of the piston (1102) is a pressurized oil cavity (1105), the space between the lower end surface of the piston (1102) and the bottom of the cylinder cover (1101) is an oil storage cavity (1104), and one end of the hydraulic buffer mechanism is connected with the inner shaft (1103) through the oil seal (1103) and the lower end of the inner shaft (7) is connected with the piston (1102).

12. A hinge according to any one of claims 1,2,3,4, 5, 6, 7, 8, 9, characterized in that the hydraulic buffer means comprise an independent cylinder (701) arranged in the inner cavity of the lower connecting sleeve (5), the piston rod of the independent cylinder (701) being the inner shaft (7).

13. A hinge according to any one of claims 1,2, 3, 4, 5, 6, 7, 8, 9, characterized in that said upper tubular body (102) is provided with a pressure opening mechanism comprising a pressing member for pressing said shaft portion (601) in and a fixing member for fixing said pressing member in a desired position.

14. A hinge according to claim 13, characterized in that said fixing element is an upper cover (1201) provided axially with a threaded hole, and said pressure member is a pressing screw (1202) screwed into said threaded hole.

15. A hinge according to claim 14, wherein the threaded hole is provided with a snap spring (1203) at the upper part.

16. A hinge as claimed in any one of claims 1,2, 3, 4, 5, 6, 7, 8, 9, 14, 15, characterized in that an upper decorative cover is provided at the upper end of said upper tubular body (102) and a lower decorative cover is provided at the lower end of said lower tubular body (103).