CN209891935U - Hinge with elastic hinge - Google Patents

Abstract

The utility model provides a hinge, include: the transmission sleeve is fixedly arranged on the upper portion of the inner cavity of the round tube body at the upper end of the upper connecting sleeve, the upper portion of the upper connecting sleeve extends into the inner cavity of the round tube body at the upper end of the concave leaf and is movably connected with the inner cavity of the round tube body at the upper end of the concave leaf, and the lower portion of the upper connecting sleeve extends into the inner cavity of the round tube body at the convex leaf and is fixedly connected with the inner cavity of the round tube body at the convex leaf. Use the technical scheme of the utility model, provide the energy storage with pressure spring's mode to use helicla flute reset structure, still installed hydraulic buffer mechanism and hydraulic oil flow control mechanism in addition, can be according to user's needs control speed when the page or leaf piece resets.

Description

Hinge with elastic hinge

Technical Field

The utility model relates to a door and window hardware fitting field especially relates to hinge.

Background

Hinge that closes door on the existing market mainly uses torsion spring to reset as the owner, and torsion spring reset hinge is easy disconnected at the high torsional spring foot of in-service use process wire rod intensity, and the low wire rod of intensity relaxes easily, causes the self-closing inefficacy, and the hinge that closes door that other pressure springs reset will divide the right-and-left direction installation about in addition, can not control pressure spring moreover and put the ability, and the hinge is in closed state owing to receiving spring pressure, needs the manual work to continuously open about during the installation, brings inconvenience for the user.

Disclosure of Invention

The embodiment of the utility model provides a hinge uses the technical scheme that this embodiment provided, uses pressure spring energy storage to use helicla flute reset structure, can do not divide left right direction installation hinge, the outward appearance is pleasing to the eye, and can control pressure spring and put the ability, and adjustable speed's independent buffer cylinder sets up, effectively solves other subassembly wearing and tearing in the use and produces the foreign matter, blocks up the oil circuit and causes the buffering to close inefficacy, and is rational in infrastructure, simple to operate, and easy to maintain changes can satisfy the needs of modern society life.

The embodiment of the utility model provides an aim at is realized through following technical scheme:

the utility model provides a hinge, include: the spiral shaft sleeve comprises a shaft rod part and a spiral groove part, at least one part of the spiral groove cylinder part extends into the cavity of the upper connecting sleeve, the shaft rod part penetrates through the upper connecting sleeve and is movably connected with the upper connecting sleeve, the upper part of the shaft rod part is inserted into the transmission sleeve, the shaft rod part and the transmission sleeve form a matching structure with axial sliding connection and synchronous rotation, two spiral grooves are symmetrically formed in the cylinder body of the spiral groove cylinder part, a pair of installation parts are symmetrically formed in the inner wall of the upper connecting sleeve, the driving shaft penetrates through the spiral grooves, two ends of the driving shaft are inserted into the installation parts, the inner shaft is connected with the lower part of the spiral groove cylinder part, a column body of the inner shaft between the lower end face of the spiral groove cylinder part and the upper end face of the lower.

Furthermore, the pair of installation parts are a pair of first through holes which are connected and sleeved on the tube body of the installation parts in an axisymmetric manner.

Further, the specific mode of connecting the inner shaft and the lower part of the spiral groove cylinder part is as follows: the lower part of the barrel body of the spiral groove barrel part is provided with a pair of second through holes in an axisymmetric mode, the upper end part of the inner shaft is provided with a transverse through hole, the upper end part of the inner shaft extends into the lower part of the barrel body of the spiral groove barrel part, and the pin penetrates through the second through holes and the transverse through holes.

Furthermore, more than one tubular sliding sleeve is sleeved on the column body of the driving shaft in the spiral groove.

Furthermore, a sleeve is sleeved on the shaft body of the inner shaft and is positioned between the pressure spring and the inner shaft.

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

Furthermore, a groove is arranged on the section perpendicular to the axis.

Furthermore, the upper portion of going up the adapter sleeve sets up the undergauge, has first antifriction bearing between the upper portion of going up the adapter sleeve and the inner wall of upper end pipe body.

Furthermore, the upper part of the lower connecting sleeve is provided with a reducing, and a second rolling bearing is arranged between the upper part of the lower connecting sleeve and the inner wall of the convex leaf circular pipe body.

Furthermore, a first plane bearing is arranged between the upper end face of the circular tube body of the convex leaf and the lower end face of the circular tube body of the upper end, and a second plane bearing is arranged between the lower end face of the circular tube body of the convex leaf and the upper end face of the circular tube body of the lower end.

Further, the concrete mode that the shaft lever part and the transmission sleeve form the axial sliding connection and synchronous rotating matching structure is as follows: the upper portion of the shaft rod portion is a spline shaft, the inner wall of the transmission sleeve is provided with a spline groove matched with the spline shaft, and the shaft rod portion and the spline shaft are matched with each other through the spline shaft and the spline groove to achieve synchronous rotation and axial sliding connection.

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

Further, the hydraulic buffer mechanism comprises an oil cylinder sealing cover, a piston and an oil seal, wherein the oil cylinder sealing cover is connected with the lower end part of the lower connecting sleeve, the piston is arranged at the lower end part of the inner shaft, the oil seal is arranged between the inner wall of the lower connecting sleeve and the inner shaft, the space between the lower end face of the oil seal and the upper end face of the piston is a pressurized oil cavity, the space between the lower end face of the piston and the bottom of the oil cylinder sealing cover is an oil storage cavity, and the specific mode that one end of the hydraulic buffer mechanism is connected with the inner shaft is that the inner shaft penetrates through the oil seal.

Further, the inner shaft includes two connectable parts.

Furthermore, the piston is a piston with a one-way oil passing function, and a piston inner sealing ring is arranged in the piston.

Furthermore, a hydraulic oil flow control mechanism is arranged in the hinge.

Further, the concrete structure of the hydraulic oil flow control mechanism is as follows: the shaft body is provided with a pore passage from the lower end surface of the inner shaft along the axis, the pore passage is limitedly communicated to a certain position above the piston, the shaft body of the inner shaft is provided with an oil passing hole, the oil passing hole is positioned on the shaft body of the inner shaft above the upper end surface of the piston and is communicated with the pore passage, and a speed regulating oil needle is arranged in the pore passage from bottom to top and has a diameter change.

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

Furthermore, the upper end round pipe body is provided with a pressure opening mechanism, the pressure opening mechanism comprises a pressing piece and a fixing piece, the pressing piece is used for pressing the shaft rod part in, and the fixing piece is used for fixing the pressing piece at a required position.

Furthermore, the fixed part is an upper sealing cover provided with a threaded hole in the axial direction, and the pressing part is a top pressing screw installed with the threaded hole in a screwed mode.

Furthermore, a snap spring is arranged at the upper part of the threaded hole.

Further, an upper decorative cover is provided at the upper end of the upper end circular tube body, and a lower decorative cover is provided at the lower end of the lower end circular tube body.

Use the technical scheme of the utility model, provide the energy storage with pressure spring's mode to use helicla flute reset structure, still installed hydraulic buffer mechanism and hydraulic oil flow control mechanism in addition, can be according to user's needs control speed when the page or leaf piece resets, enable the page or leaf piece and install about not dividing, and the outward appearance is pleasing to the eye, is provided with pressure opening mechanism and conveniently opens the hinge, simple structure, and is convenient for install the maintenance.

Drawings

FIG. 1 is a schematic sectional view of the first, second and third embodiments in the present open chain;

FIG. 2 is a schematic sectional view of the hinge of the first, second and third embodiments in the open chain;

fig. 3 is a schematic sectional view of the upper connecting sleeve in fig. 1 and 2;

FIG. 4 is a schematic cross-sectional view of the inner shaft and piston of FIGS. 1 and 2;

fig. 5 is a schematic sectional view of a hydraulic oil flow control mechanism in a third embodiment;

FIG. 6 is a schematic structural view of the spiral sleeve in the above embodiment;

FIG. 7 is a schematic structural view of the driving sleeve in the above embodiment;

fig. 8 and 9 are schematic views of the flow direction of hydraulic oil when the piston moves up and down in the second and third embodiments.

In the figure: 1. concave pages; 101. A female leaf; 102. an upper end circular pipe body; 103. a lower end circular pipe body; 2. A convex page; 201. a raised leaf; 202. A cylindrical tube body with convex leaves; 3. a transmission sleeve; 301. a spline groove; 4. connecting sleeves are arranged; 401. an installation part; 402. a drive shaft; 403. a sliding sleeve; 5. A lower connecting sleeve; 6. a spiral shaft sleeve; 601. A shaft portion; 6011. a spline shaft; 602. a spiral groove cylinder part; 6021. a helical groove; 6022. a through hole; 603. A pin; 7. an inner shaft; 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. sealing the oil cylinder; 1102. a piston; 1103. oil sealing; 1104. an oil storage chamber; 1105. a pressurized oil chamber; 12. a duct; 13. a speed-regulating oil needle; 14. an oil passing hole; 15. a piston inner sealing ring; 1601. an upper sealing cover; 1602. pressing the screw; 1603. and a clamp spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and examples. Please read with reference to fig. 1-9.

The first embodiment is as follows:

as shown with reference to figures 1 to 7,

the utility model provides a hinge, include: the structure comprises a concave leaf 1, a convex leaf 2, a transmission sleeve 3, an upper connecting sleeve 4, a lower connecting sleeve 5, a spiral shaft sleeve 6, an inner shaft 7 and a pressure spring 8, wherein the concave leaf 1 and the convex leaf 2 are hinged through the upper connecting sleeve 4 and the lower connecting sleeve 5, the concave leaf 1 comprises a concave leaf blade 101, an upper end round pipe body 102 connected with the upper edge of the concave leaf blade 101 and a lower end round pipe body 103 connected with the lower edge of the concave leaf blade 101, the convex leaf 2 comprises a convex leaf blade 201 and a convex leaf round pipe body 202 connected with the edge of the convex leaf blade 201, the transmission sleeve 3 is fixedly arranged at the upper part of the inner cavity of the upper end round pipe body 102, the upper part of the upper connecting sleeve 4 extends into the inner cavity of the upper end round pipe body 102 of the concave leaf 1 and is movably connected, the lower part of the upper connecting sleeve 4 extends into the inner cavity of the convex leaf round pipe body 202 and is fixedly connected, the upper part of the lower connecting sleeve 5 extends into the inner cavity of the convex leaf round pipe body 202 and is, the spiral shaft sleeve 6 comprises a shaft part 601 and a spiral groove cylinder part 602, at least one part of the spiral groove cylinder part 602 extends into the cavity of the upper connecting sleeve 4, the shaft part 601 penetrates through the upper connecting sleeve 4 and is movably connected with the upper connecting sleeve 4, the upper part of the shaft part 601 is inserted into the transmission sleeve 3, the shaft part 601 and the transmission sleeve 3 form a matching structure of axial sliding connection and synchronous rotation, two spiral grooves 6021 are symmetrically arranged on the cylinder body of the spiral groove cylinder part 602, a pair of mounting parts 401 are symmetrically arranged on the inner wall of the upper connecting sleeve 4, the driving shaft 402 penetrates through the spiral grooves 6021, two ends of the driving shaft 402 are inserted into the mounting parts 401, the inner shaft 7 is connected with the lower part of the spiral groove cylinder part 602, a pressure spring 8 is sleeved on the cylinder body of the inner shaft 7 between the lower end face of the spiral groove cylinder part 602 and.

In this embodiment, the female hinge moves synchronously with the driving sleeve, the shaft portion, the spiral groove cylinder portion and the lower connecting sleeve, and the male hinge moves synchronously with the upper connecting sleeve and the driving shaft.

The utility model discloses well so-called convex page or leaf is the whole image expression that constitutes of convex page or leaf piece and a convex page or leaf circle body, and concave page or leaf is concave page or leaf piece, the upper end circle body that is connected with concave page or leaf piece upper portion edge and the lower extreme circle body that is connected with concave page or leaf piece lower part edge, the whole image expression that constitutes of three, convex page or leaf and concave page or leaf are mutually supporting in the shape and use. The specific shapes of the convex leaf and the concave leaf are determined according to the connection requirement of the installed door leaf or door frame.

In this embodiment, the actual application scenarios are as follows:

when external force opens the hinge, the concave leaf and the convex leaf rotate outwards relatively along the axis, the concave leaf and the transmission sleeve, the shaft rod part, the spiral groove cylinder part and the lower connection sleeve move synchronously, and the convex leaf and the upper connection sleeve and the driving shaft move synchronously, so that the driving shaft rotates in the spiral groove, namely slides upwards along the axial direction of the spiral groove, presses the spiral groove cylinder part to generate axial downward movement, and a pressure spring sleeved on the cylinder 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 connection sleeve 5 is extruded by the lower end surface of the spiral groove cylinder part 602 to retract and store energy; when the external force for opening the hinge disappears, the pressure spring releases pressure to push the spiral groove cylinder part to move upwards, the driving shaft slides along the descending distance of the spiral groove to enable the spiral groove cylinder part 602 to do axial upward rotation movement, and the hinge is automatically closed.

In this technical scheme, because the both ends of drive shaft are stretched into the installation department that is located the body of upper connecting sleeve, consequently, need not to set up the installation department on the lug, like this, in the outward appearance, the lug hole-free hole, it is also more pleasing to the eye in the appearance. The both ends of drive shaft utilize the inner wall of the flange body as axial spacing, and are more firm to the spiral groove cover moves at last adapter sleeve inner chamber, reduces the requirement of flange body hole machining precision, effectively improves quality and production efficiency.

By using the technical scheme, the hinge can be installed in the left and right directions without using a 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 a torsion spring is solved, and the requirements of modern social life can be met.

Further, the pair of mounting portions 401 are a pair of first through holes of the upper connection sleeve 4 axially symmetrically disposed on the tube body thereof. Of course, the mounting part can also be a concave pit which is symmetrically sleeved on the pipe body of the upper connecting sleeve. In short, the driving shaft can be stably and vertically arranged with the axis of the cylindrical tube 202, and the driving shaft is designed into a through hole, so that the driving shaft is convenient to manufacture and install.

Further, the specific mode of connecting the inner shaft 7 to the lower portion of the spiral groove tube portion 602 is as follows: a pair of second through holes 6022 are axially symmetrically provided in the lower part of the barrel of the spiral groove barrel 602, a lateral through hole is provided in the upper end of the inner shaft 7, the upper end of the inner shaft 7 extends into the lower part of the barrel of the spiral groove barrel 602, and the pin 603 passes through the second through holes 6022 and the lateral through hole. By connecting the inner shaft 7 and the spiral groove cylinder part 602 in this way, the manufacture and the installation are convenient.

Further, more than 1 tubular sliding sleeve 403 is sleeved on the shaft body of the driving shaft 402 in the spiral groove 6021. So that the sliding friction between the driving shaft and the spiral groove is changed into rolling friction, the service life of the parts is prolonged, and the 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. By using the sleeve, direct friction does not occur between the pressure spring and the inner shaft, the service life of parts is prolonged, and noise is reduced.

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

Furthermore, a groove is arranged on the section perpendicular to the axis. The groove is used for playing a role of a door stopper and stabilizing the door leaf when the groove is clamped with the driving shaft.

Further, the upper portion of the upper connecting sleeve 4 is provided with a reducing diameter, 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 connection sleeve 5 is provided with a reducing diameter, and a second rolling bearing 902 is arranged between the upper portion of the lower connection sleeve 5 and the inner wall of the lobe circular tube body 202.

The rolling bearing has the function of enabling the convex leaf blade and the concave leaf blade to form rolling hinge connection, so that the hinge can be opened and closed more smoothly, and abrasion is reduced. The same is true for the second rolling bearing.

Further, a first planar bearing 1001 is provided between the upper end surface of the cylindrical bellows 202 and the lower end surface of the upper end cylindrical body 102, and a second planar bearing 1002 is provided between the lower end surface of the cylindrical bellows 202 and the upper end surface of the lower end cylindrical body 103. The first plane bearing and the second plane bearing are used for reducing abrasion among the end face of the circular tube body of the convex leaf, the end face of the circular tube body at the upper end of the concave leaf and the end face of the circular tube body at the lower end of the concave leaf, so that the hinge can be opened and closed more smoothly.

Further, the specific manner of the matching structure of the axial sliding connection and the synchronous rotation formed by the shaft part 601 and the transmission sleeve 3 is as follows: the upper part of the shaft rod part 601 is provided with a spline shaft 6011, the inner wall of the transmission sleeve 3 is provided with a spline groove 301 which is matched with the shaft rod part 601, and the shaft rod part 601 and the spline shaft 6011 are matched with each other through the spline shaft 6011 and the spline groove 301 to realize synchronous rotation and axial sliding connection. The fit of the spline shaft and the spline groove enables the transmission sleeve and the shaft rod part to realize synchronous rotation and axial sliding connection more accurately, and the parts are convenient to process.

Example two:

as shown in figures 1-9 of the drawings,

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. In this embodiment, in addition to the advantages of the first embodiment, the hydraulic buffer mechanism can effectively control the closing speed of the door leaf and reduce the noise of door closing.

In a more specific aspect, the present invention is,

the hydraulic buffer mechanism comprises a cylinder cover 1101, a piston 1102 and an oil seal 1103, wherein the 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 face of the oil seal 1103 and the upper end face of the piston 1102 is a pressure-receiving oil chamber 1105, a space between the lower end face of the piston 1102 and the bottom of the cylinder cover 1101 is an oil storage chamber 1104, and the inner shaft 7 is connected with the inner shaft 7 in a specific mode that the inner shaft 7 penetrates through the oil seal 1103 and the lower end part of the inner shaft. When external force opens the hinge, the convex leaf and the concave leaf relatively rotate outwards along the axis, the concave leaf and the transmission sleeve, the shaft rod part, the spiral groove cylinder part and the lower connection sleeve synchronously move, and the convex leaf, the upper connection 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, presses the spiral groove cylinder part to enable the spiral groove cylinder part to move downwards, a pressure spring sleeved on the cylinder body of the inner shaft 7 between the lower end face of the spiral groove cylinder part 602 and the upper end face of the lower connection sleeve 5 is extruded by the lower end face of the spiral groove cylinder part 602 to retract and store energy, and meanwhile, a piston rod of the hydraulic buffer mechanism, namely the inner shaft, moves downwards to push the piston to enable hydraulic oil in the oil storage cavity. When the external force for opening the hinge disappears, the pressure spring releases pressure to push the spiral groove cylinder part to move upwards, the driving shaft slides along the descending distance of the spiral groove to enable the spiral groove cylinder part 602 to do axial upward rotation movement, and the hinge is automatically closed. The inner shaft pulls the piston to enable hydraulic oil in the pressure oil cavity to flow to the oil storage cavity, so that the speed of the upward movement of the inner shaft is controlled, and hydraulic buffering closing is achieved.

Further, the inner shaft 7 includes two connectable upper and lower members. The two parts which can be connected in a connecting way are separated for production and processing, so that the production is convenient, and the installation is convenient.

Further, the piston 1102 is a piston having a one-way oil passing function, and a piston inner seal 15 is provided in the piston 1102.

The practical application scenario is as follows:

when external force opens the hinge, the convex leaf and the concave leaf relatively rotate outwards along the axis, the concave leaf and the transmission sleeve, the shaft rod part, the spiral groove cylinder part and the lower connection sleeve synchronously move, and the convex leaf, the upper connection 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, presses the spiral groove cylinder part to enable the spiral groove cylinder part to move downwards, a pressure spring sleeved on the cylinder body of the inner shaft 7 between the lower end face of the spiral groove cylinder part 602 and the upper end face of the lower connection sleeve 5 is extruded by the lower end face of the spiral groove cylinder part 602 to retract and store energy, and meanwhile, a piston rod of the hydraulic buffer mechanism, namely the inner shaft, moves downwards to push the piston to enable hydraulic oil in the oil storage cavity. Can see the trend of hydraulic oil in figure 8, when the piston was the piston of one-way oily function of passing, interior axial displacement down, then piston inside seal circle rises to the upper, then produces the route of an oil between piston and concave page or leaf circular tube body, can make the hydraulic oil in the oil storage chamber flow direction pressurized oil chamber through the route between piston and the concave page or leaf circular tube body promptly, also has the hydraulic oil in some oil storage chamber to pass through the pore canal flow direction oilhole, and the rethread oilhole flows to the pressurized oil chamber. When the external force for opening the hinge disappears, the pressure spring releases pressure to push the spiral groove cylinder part to move upwards, the driving shaft slides along the descending distance of the spiral groove to enable the spiral groove cylinder part 602 to do axial upward rotation movement, and the hinge is automatically closed. The inner shaft pulls the piston to enable hydraulic oil in the pressurized oil cavity to flow to the oil storage cavity, the trend of the hydraulic oil can be seen in figure 9, when the piston is a piston with a one-way oil passing function, the inner shaft moves upwards, the sealing ring inside the piston sinks downwards, then a passage of oil generated between the piston and the concave leaf circular tube body is closed, and the hydraulic oil in the pressurized oil cavity can flow into the pore channel through the oil hole and then flows to the oil storage cavity through the pore channel. Thereby controlling the speed of the axial movement of the inner shaft and realizing the closing of the hydraulic buffer.

Therefore, in this embodiment, in addition to the advantages of the first embodiment, the hydraulic buffer mechanism can be used to control the closing speed of the door leaf, and reduce the noise of door closing.

Example three:

as shown in figures 1 to 9 of the drawings,

a hydraulic oil flow control mechanism is arranged in the hinge.

Further, the concrete structure of the hydraulic oil flow control mechanism is as follows: a pore channel 12 is formed in the shaft body from the lower end face of the inner shaft 7 along the axial line, the pore channel 12 is in limited communication with a certain position above the piston 1102, an oil passing hole 14 is formed in the shaft body of the inner shaft 7, the oil passing hole 14 is located in the shaft body of the inner shaft 7 above the upper end face of the piston 1102, the oil passing hole 14 is communicated with the pore channel 12, a speed regulating oil needle 13 is arranged in the pore channel from bottom to top, and the diameter of the speed regulating oil needle 13 is changed.

In this embodiment, since the speed-adjusting oil needle is used, it can be known by combining the second embodiment that the speed-adjusting oil needle more accurately controls the amount of the hydraulic oil flowing in the hole. As shown in the figure, as the related parts of the speed regulating oil needle have the characteristics of different thicknesses, when the depth of the speed regulating oil needle entering the pore channel is regulated from the top, the hydraulic oil quantity flowing in the pore channel can be changed, so that a user can control the closing speed of the hinge as required, and the closing speed of a door leaf and the like is controlled. The speed regulation oil needle is preferably in a conical shape.

Further, the hydraulic buffer mechanism comprises an independent oil cylinder arranged in the inner cavity of the lower connecting sleeve 5, and a piston rod of the independent oil cylinder is an inner shaft 7. The advantage of using independent cylinders is that it is more convenient to assemble, produce and install.

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

Further, the fixing piece is an upper sealing cover 1601 which is provided with a threaded hole in the axial direction, and the pressing piece is a top pressure screw 1602 which is screwed with the threaded hole.

In this embodiment, when the pressure opening mechanism is used, a user rotates the top-pressing screw 1602 by using an adaptive tool, so that the lower end surface of the top-pressing screw 1602 abuts against the upper end surface of the shaft rod part 601, the shaft rod part 601 moves downwards, the driving shaft rotates in the spiral groove, namely slides upwards along the axial direction of the spiral groove in a lifting manner, the cylinder part of the spiral groove is pressed to generate axial downward movement, the convex leaf and the concave leaf are relatively opened along the axial line, the opened state is a fixed state, and the user can conveniently install the hinge at this time; after the installation is completed, the top-pressure screw 1602 is withdrawn, so that the lower end surface of the top-pressure screw 1602 is no longer abutted against the upper end surface of the shaft portion 601, and the hinge can enter a normal working state. The provision of a pressure opening mechanism allows the user to install the hinge very easily without the need for additional effort to continue to open the leaves.

Further, a snap spring 1603 is arranged at the upper part of the threaded hole. The clamp spring 1603 is used for preventing the top pressure screw 1602 from withdrawing. Thus, the top pressing screw 1602 can fix the back dead point, and the hinge working state is stable in the use process in the future.

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

The upper decoration cover can embody the function of the upper sealing cover, namely, the upper sealing cover and the upper decoration cover can be independent, and the upper sealing cover can embody the function of the upper decoration cover. The lower decorative cover can embody the function of 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 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 to prevent dust accumulation.

In the present invention, the shaft portion 601 and the spiral shaft sleeve can be integrally manufactured. Thus, the processing and the installation are convenient.

The hinge provided by the embodiment of the present invention is described in detail above, and the principle and the implementation of the present invention are explained by applying a specific example, and the description of the above embodiment is only used to help understand the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, and in summary, the content of the present specification should not be understood as the limitation of the present invention.

Claims (22)

1. A hinge, comprising: the novel spiral hinge comprises a concave leaf (1), a convex leaf (2), a transmission sleeve (3), an upper connecting sleeve (4), a lower connecting sleeve (5), a spiral shaft sleeve (6), an inner shaft (7) and a pressure spring (8), wherein the concave leaf (1) and the convex leaf (2) are hinged through the upper connecting sleeve (4) and the lower connecting sleeve (5), the concave leaf (1) comprises a concave leaf (101), an upper end round pipe body (102) connected with the upper edge of the concave leaf (101) and a lower end round pipe body (103) connected with the lower edge of the concave leaf (101), the convex leaf (2) comprises a convex leaf (201) and a convex leaf round pipe body (202) connected with the edge of the convex leaf (201), the transmission sleeve (3) is fixedly arranged on the upper part of the inner cavity of the upper end round pipe body (102), the upper part of the upper connecting sleeve (4) extends into the inner cavity of the upper end round pipe body (102) of the concave leaf (1) and is movably connected with the inner cavity, the lower part of the upper connecting sleeve (4) extends into the inner cavity of the convex leaf circular tube body (202) and is fixedly connected, the upper part of the lower connecting sleeve (5) extends into the inner cavity of the convex leaf circular tube body (202) and is movably connected, the lower part of the lower connecting sleeve (5) extends into the inner cavity of the lower end circular tube body (103) of the concave leaf (1) and is fixedly connected, the spiral shaft sleeve (6) comprises a shaft part (601) and a spiral groove tube part (602), at least one part of the spiral groove tube part (602) extends into the cavity of the upper connecting sleeve (4), the shaft part (601) penetrates through the upper connecting sleeve (4) and is movably connected with the upper connecting sleeve (4), the upper part of the shaft part (601) is inserted into the transmission sleeve (3), and the shaft part (601) and the transmission sleeve (3) form a matching structure with axial sliding connection and synchronous rotation, two spiral grooves (6021) are axially symmetrically formed in the cylinder body of the spiral groove cylinder part (602), a pair of installation parts (401) is axially symmetrically arranged on the inner wall of the upper connecting sleeve (4), the driving shaft (402) penetrates through the spiral grooves (6021), two ends of the driving shaft (402) are inserted into the installation parts (401), the inner shaft (7) is connected with the lower part of the spiral groove cylinder part (602), the pressure spring (8) is sleeved on the cylinder body of the inner shaft (7) between the lower end face of the spiral groove cylinder part (602) and 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).

2. The hinge according to claim 1, characterized in that said pair of mounting portions (401) is a pair of first through holes of said upper connecting sleeve (4) arranged axially symmetrically on its tubular body.

3. The hinge according to claim 1, characterized in that the connection between said internal shaft (7) and the lower part of said spiral groove cylinder (602) is carried out in a manner such that: a pair of second through holes (6022) is axially symmetrically arranged at the lower part of the barrel body of the spiral groove barrel part (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 body of the spiral groove barrel part (602), and a pin (603) passes through the second through holes (6022) and the transverse through hole.

4. The hinge as claimed in claim 1, wherein said drive shaft (402) has more than one sliding sleeve (403) in the form of a circular tube fitted over the shaft inside said spiral groove (6021).

5. The hinge according to claim 1, characterized in that the shaft body of said inner shaft (7) is sheathed with a bushing positioned between said pressure spring (8) and said inner shaft (7).

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

7. The hinge according to claim 6, wherein said section perpendicular to the axis is provided with a groove.

8. The hinge as claimed in claim 1, characterized in that the upper portion of the upper connecting sleeve (4) is provided with a reducing diameter, 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 round tube body (102).

9. The hinge according to claim 8, characterized in that the upper portion of said lower connecting sleeve (5) is provided with a reducing diameter, and a second rolling bearing (902) is arranged between the upper portion of said lower connecting sleeve (5) and the inner wall of said cylindrical body (202).

10. The hinge according to any one of claims 1, 2, 3, 4, 5, 6, 7, 8 and 9, wherein a first flat bearing (1001) is provided between the upper end surface of said cylindrical tube (202) and the lower end surface of said upper cylindrical tube (102), and a second flat bearing (1002) is provided between the lower end surface of said cylindrical tube (202) and the upper end surface of said lower cylindrical tube (103).

11. The hinge according to any one of claims 1, 2, 3, 4, 5, 6, 7, 8, 9, characterized in that said shaft portion (601) forms with said driving bushing (3) an engagement structure for axial sliding connection and synchronous rotation in particular: the upper portion of the shaft rod portion (601) is a spline shaft (6011), the inner wall of the transmission sleeve (3) is provided with a spline groove (301) matched with the inner wall of the transmission sleeve, and the shaft rod portion (601) and the spline shaft (6011) are matched with each other through the spline shaft (6011) and the spline groove (301) to achieve synchronous rotation and axial sliding connection.

12. The hinge as claimed in claim 1, 2, 3, 4, 5, 6, 7, 8, 9, wherein a hydraulic buffer mechanism is provided in the inner cavity of the lower connecting sleeve (5), and one end of the hydraulic buffer mechanism is connected to the inner shaft (7).

13. The hinge according to claim 12, wherein said hydraulic damping means comprise a cylinder cover (1101), a piston (1102), an oil seal (1103), the oil cylinder sealing 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 a lower end surface of the oil seal (1103) and an upper end surface of the piston (1102) is a pressure receiving oil chamber (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), one end of the hydraulic buffer mechanism is connected with the inner shaft (7) in a specific mode that the inner shaft (7) penetrates through the oil seal (1103) and the lower end part of the inner shaft (7) is connected with the piston (1102).

14. The hinge according to claim 13, characterized in that said inner shaft (7) comprises two upper and lower connectable parts.

15. The hinge according to any one of claims 13 and 14, wherein the piston (1102) is a piston with one-way oil passing function, and a piston inner sealing ring (15) is arranged in the piston (1102).

16. A hinge as claimed in any one of claims 13 and 14 wherein hydraulic oil flow control means are provided in the hinge.

17. The hinge as claimed in claim 16, wherein the hydraulic oil flow control mechanism is specifically configured as follows: a pore channel (12) is formed in the shaft body along the axis from the lower end face of the inner shaft (7), the pore channel (12) is in limited connection with a certain position above the piston (1102), an oil passing hole (14) is formed in the shaft body of the inner shaft (7), the oil passing hole (14) is located in the shaft body of the inner shaft (7) above the upper end face of the piston (1102), the oil passing hole (14) is communicated with the pore channel (12), a speed regulating oil needle (13) is arranged in the pore channel from bottom to top, and the diameter of the speed regulating oil needle (13) is changed.

18. The hinge according to claim 12, wherein said hydraulic buffer means comprise an independent cylinder arranged in the inner cavity of said lower connecting sleeve (5), the piston rod of said independent cylinder being said inner shaft (7).

19. A hinge according to any one of claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 13, 14, 17 and 18, wherein 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.

20. The hinge as claimed in claim 19, wherein said fixing element is an upper cover (1601) axially provided with a threaded hole, and said pressing element is a top-pressure screw (1602) screwed into said threaded hole.

21. A hinge as claimed in claim 20, characterized in that the upper part of said threaded hole is provided with a snap spring (1603).

22. A hinge according to any one of claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 13, 14, 17 and 18, wherein an upper decorative cover is provided at an upper end portion of said upper end circular tube (102), and a lower decorative cover is provided at a lower end portion of said lower end circular tube (103).

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