CN206128943U - Vapour -pressure type can self -align and self -imposed hinge - Google Patents

Abstract

The utility model discloses a vapour -pressure type can self -align and self -imposed hinge, including two hinges, solid pole, swivel nut, end cap and well core housing. Axle sleeve and blade are established to this hinge. Should be equipped with first row of inlet port by well core housing, cup joint in the diaxon cover of hinge at the center, swivel nut and end cap in the well core housing are equipped with solid pole, center seat, two types of bomb and a satellite spring and check valve within a definite time, be equipped with the exhaust piston gu the pole is just consolidated to the screw rod spiro union swivel nut of pole, the exhaust piston packaging slip in well core housing, first spring top is supported between solid pole and center seat, should fix a position the spring top and support between center seat and check valve, and the check valve is sealed to be established in well core housing, constitutes the air chjamber between exhaust piston and check valve. This exhaust piston is outwards discharged through first row of inlet port, check valve towards check valve activity, the interior air of air chjamber, and the exhaust piston cunning is behind first row of inlet port position, and the air is outwards discharged through the check valve in the air chjamber. The hinge can be self -align in the angle of predetermined setting's location, can be self -imposed below the location angle that withdraws from predetermined setting.

Description

A kind of vapour-pressure type can self-positioning and self-closing hinge

Technical field

This utility model is related to a kind of vapour-pressure type can self-positioning and self-closing hinge.

Background technology

It is entitled that Chinese patent database discloses utility model《A kind of rising hinge device》, Patent No. 2013208356551 utility model.It includes hinge, lower jaw, retainer and drive link.Upper hinge include Upper shaft sleeve and The upper hing straps of affixed Upper shaft sleeve；Lower jaw includes the lower hing straps of Lower shaft sleeve and affixed Lower shaft sleeve；The affixed Upper shaft sleeve of retainer, The retainer bottom face is arranged with drive cavity, and within the drive cavity, the surface of revolution is provided with the first spiral part.The affixed lower axle of drive link Set, outside the drive link, the surface of revolution is provided with the second spiral part, and the drive link connects drive cavity, first spiral part and second Spiral part adaptation engagement, wherein：In promotion, hinge makes hinge rotate relative to lower jaw, by the first spiral part and second Spiral part coordinates rises can hinge；Pine oil is promoted makes hinge decline under gravity, by the first spiral part Upper hinge can be made to automatically reset with the cooperation of the second spiral part and return closure.The rising hinge device is directly matched somebody with somebody using upper and lower axle sleeve Close and realize switching, but cannot divide self-closing and self-positioning.

Utility model content

This utility model provide a kind of vapour-pressure type can self-positioning and self-closing hinge, lifting in which overcoming background technology closes Deficiency existing for page device.

This utility model solves one of technical scheme that its technical problem is adopted：

A kind of vapour-pressure type can self-positioning and self-closing hinge, including two hinges, solid bar and swivel nut, each hinge all set an axle Set and one is fixed in the blade outside axle sleeve, and two hinge can be relatively rotated, and the solid bar has screw rod；Also include plug and center Set, the center and axle sleeve are respectively provided with first run through inside and outside and discharge into along the spacing dimension position of axis and axial and circumferential Pore；The center is socketed in the axle sleeve of two hinges；The swivel nut rotationally can be located in center and an affixed axle sleeve, and this blocks up Head is located in center and affixed another axle sleeve, and the swivel nut and plug are spaced, and is provided with solid between the swivel nut and plug in the center Bar, the first spring, centre mount, retaining spring and check valve；The screw rod of the solid bar is spirally connected swivel nut and solid bar is provided with exhaust pition, arranges Gas piston seal is slipped in center；First spring top is against between solid bar and centre mount, and the retaining spring contact is in Between heart seat and check valve, the check valve sealing is located in center, constitutes air-pressure chamber between the exhaust pition and check valve；Its In：The exhaust pition is discharged towards check valve activity, air pressure room air Jing first row air inlets, check valve, exhaust pition Slide Jing after first row air inlet hole site, the air Jing check valves in air pressure room are discharged.

Among one embodiment：The check valve include one can slip and seal the positioning piston of air-pressure chamber, a gas leakage blocking and One the 3rd spring, the positioning piston centre set second row pore, and the gas leakage blocking includes a pad and a projection at pad center Stifled post, stifled post adaptation stretched in second row pore, the 3rd spring one end contact pad, the other end can relative contact block up Head.

Among one embodiment：The centre mount is blow-cook.

Among one embodiment：Also include a cup, the cup adjustably can be located in center along center；The check valve It is located in cup, the centre mount is fixed in cup.

Among one embodiment：Also include adjustment seat, the cup adjustably can be located in center along center, the adjustment seat Connect cup through plug, so that the axial location of the relative center of cup can be adjusted.

Among one embodiment：The cup is provided with a step, moves along close 3rd spring direction for limiting positioning piston, 3rd spring top is against between the cup bottom of cup and pad.

Among one embodiment：Outside the solid bar, sealing ring is socketed with, the sealing ring constitutes above-mentioned exhaust pition.

Among one embodiment：Also include the volution that can be located at affixedly in center, the volution is located at swivel nut and aerofluxuss are lived Between plug, the screw rod of the solid bar is bolted through volution and is spirally connected again swivel nut.

This utility model solves the two of the technical scheme adopted by its technical problem：

A kind of vapour-pressure type can self-positioning and self-closing hinge, including the first hinge, the second hinge, solid bar and swivel nut, this first Hinge sets one first blade and two intervals are fixed in the first axle sleeve of the first blade, and second hinge includes one second blade and one The second axle sleeve of the second blade is fixed in, the second axle sleeve adaptation is positioned at two first shaft rooms, first hinge and the second hinge Can relatively rotate, the solid bar has screw rod；Also include plug, the swivel nut is fixed in one first axle sleeve and is rotatably connected on second In axle sleeve one end, the plug is fixed in the second axle sleeve and is connected in another first axle sleeve one end, during second axle sleeve is constituted Heart set, the center are arranged with an inside and outside first row air inlet for running through, and the cup and axle sleeve are along axis and the chi of axial and circumferential Very little spaced position, be respectively provided with one it is inside and outside run through discharge into pore；The plug is fixed in the other end of center, the swivel nut and stifled Head interval；Solid bar, the first spring, centre mount, retaining spring and positioning piston are provided between the swivel nut and plug in the center (single To valve)；The screw rod of the solid bar is spirally connected swivel nut and solid bar is provided with exhaust pition, and exhaust pition sealing is slipped in center；This One spring top is against between solid bar and centre mount, and the retaining spring contact is in centre mount and positions between piston, the positioning piston Sealing is located in center, and the exhaust pition and positioning piston space constitute air-pressure chamber；Wherein：The exhaust pition is lived towards positioning piston Dynamic, the pore that discharges into of air pressure room air Jing first row air inlets, cup and center is discharged, and exhaust pition slides Jing first After discharging into pore position, the pore that discharges into of air Jing cups and center in air pressure room is discharged.

Among one embodiment：The check valve include one can slip and seal the positioning piston of air-pressure chamber, a gas leakage blocking and One the 3rd spring, the positioning piston centre set second row pore, and the gas leakage blocking includes a pad and a projection at pad center Stifled post, stifled post adaptation stretched in second row pore, the 3rd spring one end contact pad, the other end can relative contact block up Head.

Among one embodiment：The centre mount is blow-cook.

Among one embodiment：Also include a cup, the cup adjustably can be located in center along center；The check valve It is located in cup, the centre mount is fixed in cup.

Among one embodiment：Also include adjustment seat, the cup adjustably can be located in center along center, the adjustment seat Connect cup through plug, so that the axial location of the relative center of cup can be adjusted.

Among one embodiment：The cup is provided with a step, moves along close 3rd spring direction for limiting positioning piston, 3rd spring top is against between the cup bottom of cup and pad.

Among one embodiment：Outside the solid bar, sealing ring is socketed with, the sealing ring constitutes above-mentioned exhaust pition.

Among one embodiment：Also include the volution that can be located at affixedly in center, the volution is located at swivel nut and aerofluxuss are lived Between plug, the screw rod of the solid bar is bolted through volution and is spirally connected again swivel nut.

Compared with background technology, it has the advantage that the technical program：

Hinge Jing is opened and can be rotated relative to axle sleeve axis, so that the exhaust pition that the solid bar in center has can relative spiral shell Towards check valve activity, the gas in air pressure room is discharged set downward spiral by first row air inlet, outside by check valve Discharge, now the first spring-compressed energy storage；The exhaust pition that the solid bar of hinge has continues to rotate relative to swivel nut downward spiral, aerofluxuss Piston slips over first row air inlet, and at the same time the gas in air pressure room is discharged by check valve, so that in center Exhaust pition can correspond to check valve and retaining spring and first row air inlet, so that air-pressure chamber can be formed, bar institute admittedly in the process The atmospheric pressure (suction force) of elastic force, self gravitation, air-pressure chamber by the first spring balances each other so that the exhaust pition in air pressure room Piston, retaining spring can be correspondingly positioned, so that the exhaust pition in air pressure room can produce atmospheric pressure and suction force balances each other, is made During this hinge can realize it is self-positioning.Hinge is closed to move up with respect to swivel nut spiral so as to consolidate bar, exhaust pition In air pressure room it is bottom-up do not skid off (exit) first row air inlet before so that the exhaust pition in air pressure room correspondingly can be positioned Piston and retaining spring, the elastic force of the first spring suffered by exhaust pition that the solid bar in air pressure room has in the process, from Heavy sensation of the body power, atmospheric pressure and (suction force) balance each other, relative so that what positioning piston can be produced by (suction force) of exhaust pition Atmospheric pressure, and it is bottom-up twitched and it is bottom-up slide, stop at an intended orientation angle to hinge self-positioning, At the same time the compressed energy-storage elastic force of the retaining spring produces change, so that retaining spring one end can support to arrive in centre mount, the other end To the step that piston is supported to arrive in is positioned, at the same time the positioning piston is produced energy contact positioning piston by (suction force) of exhaust pition Raw atmospheric pressure, and it is bottom-up twitched and it is bottom-up slide when, the compressed energy-storage elastic force of the 3rd spring Change is produced, so that the 3rd spring one end can support to arrive in the cup bottom of cup, the other end is relative to be blocked to positioning with energy contact gas leakage The surface perisporium of piston, can completely cut off, prevent outside air from the air pressure room that second row pore enters center, so that aerofluxuss Piston can be self-positioning in air pressure room, as long as before exhaust pition does not skid off (exit) first row air inlet, just energy mobility is in gas Coordinate hinge self-positioning in the orientation angle of predetermined set in pressure chamber, exhaust pition is bottom-up not to slide Jing (not slipping into) first row Before air inlet, hinge can realize it is self-positioning, exhaust pition after first row air inlet hole site is skidded off (exit), among heart with The outside air of center is made to enter in air pressure room from first row air inlet, at the same time the energy storage release of the first spring, with band Dynamic solid bar is movable upwards so that hinge realize it is self-closing.Axial and circumferential size of the first row air inlet along center and axle sleeve Spacing set location, correspondence hinge it is self-positioning in the orientation angle starting point of a predetermined set orientation angle, and predetermined angular with The self-closing boundary's point of lower energy, both hinge turn to a predetermined set orientation angle orientation angle starting point it is self-positioning, and in predetermined angle During the self-closing boundary's point of the following energy of degree, so that exhaust pition can correspond to check valve and retaining spring and gas leakage blocking and first row air inlet Hole, so that air-pressure chamber can be constituted, so that hinge can be self-positioning in the orientation angle of a predetermined set, and below predetermined set angle Can be self-closing, at the same time the air-pressure chamber can correspond to and coordinate hinge with can be self-positioning in the orientation angle of predetermined set, so that Hinge can be free self-positioning in the orientation angle of predetermined set, and can be self-closing below predetermined angular, relative so that hinge Orientation angle freely can be set.

Adjustment seat can adjust axial location of the cup with respect to center, can correspondingly adjust the compressed energy-storage bullet of the first spring Power and pretightning force and air-pressure chamber cavity size, can at least realize adjusting self-closing dynamics size, self-closing speed speed.

Description of the drawings

The utility model is described in further detail with reference to the accompanying drawings and examples.

Fig. 1 depicts the structural representation of the hinge of embodiment one.

Fig. 2 depicts the structural representation of the second hinge of embodiment one.

Fig. 3 depicts the structural representation of the first hinge of embodiment one.

Fig. 4 depicts the assembling structure schematic diagram of the center of embodiment one.

Fig. 5 depicts the schematic perspective view of the center of embodiment one.

Fig. 6 depicts the structural representation of the center of embodiment one.

Fig. 7 depicts the schematic perspective view of the clutch shaft bearing of embodiment one.

Fig. 8 depicts the schematic perspective view of the swivel nut of embodiment one.

Fig. 9 depicts the structural representation of the swivel nut of embodiment one.

Figure 10 depicts the schematic perspective view of the volution of embodiment one.

Figure 11 depicts the structural representation of the volution of embodiment one.

Figure 12 depicts the structural representation of the affixed screw of embodiment one.

Figure 13 depicts the schematic perspective view of the solid bar of embodiment one.

Figure 14 depicts the structural representation of the solid bar of embodiment one.

Figure 15 depicts the schematic perspective view of the blow-cook of embodiment one.

Figure 16 depicts the structural representation of the blow-cook of embodiment one.

Figure 17 depicts the structural representation of the positioning piston of embodiment one.

Figure 18 depicts the schematic perspective view of the positioning piston of embodiment one.

Figure 19 depicts the schematic perspective view of the gas leakage blocking of embodiment one.

Figure 20 depicts the structural representation of the cup of embodiment one.

Figure 21 depicts the schematic perspective view of the cup of embodiment one.

Figure 22 depicts the schematic perspective view of the plug of embodiment one.

Figure 23 depicts the structural representation of the plug of embodiment one.

Figure 24 depicts the structural representation of the adjustment seat of embodiment one.

Figure 25 depicts the schematic perspective view of the adjustment seat of embodiment one.

Figure 26 depicts the structural representation of the hinge of embodiment two.

Figure 27 depicts the structural representation of the second hinge of embodiment two.

Figure 28 depicts the structural representation of the first hinge of embodiment two.

Figure 29 depicts the structural representation of the blow-cook of embodiment two.

Figure 30 depicts the structural representation of the positioning piston of embodiment two.

Figure 31 depicts the structural representation of the cup of embodiment two.

Figure 32 depicts the structural representation of the hinge of embodiment three.

Figure 33 depicts the structural representation of the second blade of embodiment three.

Figure 34 depicts the structural representation of the first blade of embodiment three.

Figure 35 depicts the structural representation of the retaining spring of embodiment three.

Figure 36 depicts the structural representation of the first spring of embodiment three.

Figure 37 depicts the structural representation of the 3rd spring of embodiment three.

Figure 38 depicts the structural representation of the volution of embodiment three.

Specific embodiment

Embodiment one

A kind of vapour-pressure type can self-positioning and self-closing hinge, hinge voluntarily can be exercised when 0 degree to the 80 degree angle that is such as opened Arbitrary predetermined angular of self-closing and 80 degree of predetermined angulars to 180 degree predetermined angular can be self-positioning, can be adapted to be arranged at any shape Hinge axle sleeve in such as butterfly hinge, H type hinges, master and slave type hinge, flag-shaped hinge, body hinge, automobile fold-hinges And any peculiar hinge axle sleeve in etc. can all arrange, be adapted for mount to any door leaf and any door and window and any car door car Railway carriage or compartment door etc..

The hinge, refer to Fig. 1 to Figure 25, including the first hinge 10, the second hinge 20, solid bar 30, swivel nut 40, center 50th, plug 60 and adjustment seat 70.First hinge 10 sets one first blade 12 and and is fixed in the first axle sleeve of the first blade 12 11, second hinge 20 includes that one second blade 22 and is fixed in the second axle sleeve 21 of the second blade 22.The center 50 connects It is connected in the first axle sleeve 11 and the second axle sleeve 21, first axle sleeve 11 and the second axle sleeve 21 are arranged side by side along center so that two Hinge can be relatively rotated.The center 50 and the first axle sleeve 11 are respectively provided with along the size-spacing position of axis and axial and circumferential The one inside and outside first row air inlet 55 for running through.First axle sleeve 11 sets an inside and outside first row air inlet 55 for running through, in being auxiliary The first row air inlet 55 (first axle sleeve can also be without arranging first row air inlet 55 certainly) of heart set 50.

The swivel nut 40 can be rotated and can not be slidably connected in center 50,11 He of the first axle sleeve of first hinge 10 The part that swivel nut 40 is stretched out outside center 50 is affixed, and this is affixed for example：Another to arrange a change 41,40 top of swivel nut is convexly equipped with carefully Bar 42, the thin bar 42 can rotationally pass through change 41, and the adaptation of change 41 is located at 11 top of the first axle sleeve, by arranging affixed spiral shell Nail 98 is locked through the first axle sleeve 11 and is locked into through change 41 and is being locked into affixed thin bar 42, so that the first axle sleeve 11 and change 41 With it is affixed with thin bar 42 change 41 and the first axle sleeve 11 can also limit the axially activity of swivel nut 40 together, with can positioning thread insert/ Gu the axial and circumferential size-spacing position that bar is rotated along axis and slided, is that relative guarantee cooperation 10 blade 12 of hinge can be pre- The fixed orientation angle for arranging is self-positioning.The plug 60 is connected in center 50, the second axle sleeve 21 of second hinge 20 and stifled 60 parts stretched out outside center 50 are affixed, this is affixed for example arrange affixed screw 98 be locked into it is through the second axle sleeve 21 and affixed Enter in plug 60.

The swivel nut 40 and plug 60 are spaced, and are provided with solid bar 30, the first bullet between the swivel nut 40 and plug 60 in the center 50 Spring 81, centre mount 82, retaining spring 83 and check valve 90.A cup 56 is additionally provided with the center 50, the cup 56 is along center Cover 50 axis to be adjustably located in center 50, the cup bottom opening of the cup 56.The centre mount 82 is blow-cook 82.It is best： The first flange 51 is set in center 50, by the first flange 51 in center 50, it is impossible to be slidably connected and be fixed with volution 43, The volution 43 is located under swivel nut and the screw rod 31 is bolted through volution 43 and is spirally connected again swivel nut 40, so that the volution 43 can be limited and be controlled Make the screw rod 31 slip and mobile, produced spacing dimension coefficient are rotated relative to swivel nut 40, Gu with energy positioning thread insert/bar along axle The axial and circumferential size-spacing position that line is rotated and slided, is that relative guarantee cooperation 10 blade 12 of hinge can be in predetermined set It is self-positioning in orientation angle.The check valve 90 is positioning piston 91.The first spring 81 is being not provided with the center of hinge In situation, hinge still can predetermined set orientation angle it is self-positioning.

The screw rod 31 of the solid bar 30 is spirally connected swivel nut 40 and solid bar 30 is provided with exhaust pition 33, and the sealing of exhaust pition 33 is slipped In center 50.The centre mount 82 is fixed at the opening of cup 51 and seals the gap of cup opening and center.This is unidirectional Valve 90 is located in cup 56.55 set location of first row air inlet is located at exhaust pition 33 along the event trace of center； The first row air inlet 55 exists along center 50 and the axis and axial and circumferential size-spacing set location of axle sleeve, correspondence hinge 90 degree of orientation angle starting points of one predetermined set orientation angle are self-positioning, and can be self-closing below 90 degree of orientation angles boundary's point, Both hinge turn to a predetermined set orientation angle 90 degree of orientation angle starting points it is self-positioning, and the energy below 90 degree of orientation angles During self-closing boundary's point, the correspondence check valve 90 of exhaust pition 33 and retaining spring and gas leakage blocking 92 and first row air inlet 55, with Air-pressure chamber can be constituted, at the same time the air-pressure chamber can be corresponded to and cooperation hinge can be self-positioning in the orientation angle of predetermined set, So that hinge can be free self-positioning in the 90 of predetermined set degree to 180 degree orientation angle so that hinge freely can make a reservation for set Put orientation angle.

By the first row air inlet 55, along center 50, and the axial and circumferential size-spacing position of axle sleeve 11 arrange, With by 98 spiral shell of affixed screw enter through axle sleeve 11 be bolted through change 41 again interlocking fix thin bar 42, make axle sleeve, change, Thin bar is affixed together, so that change 41 can coordinate the rotation of hinge 10 and axle sleeve 11, so that change 41 and hinge 10 can limit spiral shell The axially activity of set 40, Gu relative to the axial and circumferential size-spacing position for being rotated along axis with energy positioning thread insert/bar and slide, With the threaded by screw rod 31 and swivel nut 40 in hinge 10 and axle sleeve 11, with can be relative rotation slide, and by the One flange 51 is in center 50, it is impossible to is slidably connected and is fixed with volution 43, and the volution 43 is located under swivel nut and the screw rod 31 It is bolted through volution 43 to be spirally connected again swivel nut 40, so as to the volution 43 can limit and control the screw rod 31 and rotate relative to swivel nut 40 and slide And movement, produced spacing dimension coefficient, Gu the axial and circumferential size for being rotated along axis with energy positioning thread insert/bar and being slided Spaced position, so as to the solid bar 30 in center 50 can be rotated relative to swivel nut 40 slide, so that the exhaust pition that solid bar 30 has 33, the axial and circumferential size-spacing downward spiral that can produce fixation is movable towards check valve 90, at the same time the gas in air pressure room Body is discharged by first row air inlet 55 and is discharged with the second row pore 911 of check valve 90, and at the same time aerofluxuss are lived Plug 33 slips over first row air inlet 55 still further below, now the gas in air pressure room by the second row pore 911 of check valve 90 to Outer discharge, so that the exhaust pition 33 in center can correspondence check valve 90 and gas leakage blocking 92 and retaining spring 83 and first row Air inlet 55, can be constituted air-pressure chamber, enables the exhaust pition in air pressure room to produce atmospheric pressure and (suction force) balance, is relative Ensure that hinge blades can free predetermined set orientation angle position.

81 contact of the first spring in the center between 30 bottom face of solid bar and centre mount 82, push up by the retaining spring 83 It is against between centre mount 82 and check valve 90, the sealing of check valve 90 is located in cup 56 and abuts against in cup 56, the aerofluxuss Piston 33 and check valve 90 and retaining spring 83 constitute air-pressure chamber.The check valve 90 is positioning piston 91.Wherein：The solid bar 30 has Some exhaust pitions 33 are movable downwardly toward check valve 90, and at the same time air pressure room air Jing first rows air inlet 55 is outwards arranged Go out, Jing blow-cooks, the second row pore 911 of check valve are discharged, now the first spring-compressed energy storage；First hinge 10 continues Jing is opened and can be rotated relative to 20 axis of the second hinge, so that the exhaust pition 33 that the solid bar 30 in the first axle sleeve 11 has can be relative Swivel nut continues downward spiral and slides, at the same time exhaust pition 33 after first row air inlet hole site is slipped over, at the same time air pressure The second row pore 911 of indoor air Jing blow-cooks 82, check valve 90 is discharged, so that the exhaust pition 33 in center Energy correspondence check valve 90 and retaining spring 83 and gas leakage blocking 92 and first row air inlet 55, so that air-pressure chamber, here mistake can be constituted Exhaust pition 33 in the elastic force of the first spring 81 in journey suffered by solid bar, self gravitation, and air pressure room can correspondingly position piston 91st, retaining spring 83, so that the exhaust pition 33 in air pressure room can produce atmospheric pressure and (suction force) balances each other so that this process The blade 12 of middle hinge 10 can realize it is self-positioning so that exhaust pition 33 can coordinate positioning piston 91 and retaining spring 83, with energy Produce (suction force) and atmospheric pressure in the air pressure room, it is relative to make exhaust pition 33 in air pressure room, can mobility cooperation 10 blade 12 of hinge is self-positioning in the orientation angle of predetermined set.10 blade of hinge, the 12 Jing external force is closed, so that the first axle sleeve Exhaust pition that solid bar 30 in 11 has 33 can relative swivel nut spiral move up so that exhaust pition 33 it is bottom-up not Before sliding Jing first rows air inlet 55, as long as at the same time exhaust pition 33 is bottom-up will produce (suction force) and atmospheric pressure Power, relatively so as to position the atmospheric pressure that piston 91 is produced by (suction force) of exhaust pition 33, and by bottom-up twitch To 10 blade 12 of hinge and stop at that a predetermined angular is self-positioning, at the same time the compressed energy-storage elastic force of the retaining spring 83 is produced Change, so that one end of the retaining spring 83 can support to arrive in centre mount, the other end positions piston 91 to positioning piston 91 with energy contact The step 561 for supporting to arrive in, when at the same time positioning piston 91 by the bottom-up twitch of exhaust pition, at the same time the 3rd spring 93 compressed energy-storage elastic force produces change, so that the 3rd spring one end can support to arrive in the cup bottom of cup, the other end is relative can push up Pad 921 and stifled post 922 to gas leakage blocking 92 is reset to the surface perisporium of positioning piston 91, to completely cut off and prevent outside air Enter in air pressure room from second row pore 911, so that exhaust pition 33 can be positioned in air pressure room, it is relative to realize 10 leaf of hinge Piece 12 is self-positioning in the orientation angle of predetermined set.The energy storage elastic force and spring pre-tightening force intensity of the retaining spring 83 is stronger Greatly, so that relative more powerful, retaining spring that is bound to of tensile strength of the positioning piston 91 of 83 one end institute contact of retaining spring The other end supports to arrive in centre mount so that exhaust pition 33 is bottom-up do not skid off (exit) first row air inlet 55 before, in air-pressure chamber The intensity of interior born atmospheric pressure and (suction force) is relative can be more powerful, relative so that blade the determining in predetermined set of hinge Positioning dynamics self-positioning in parallactic angle degree is relative can be more powerful, and the exhaust pition 91 skids off (exit) first and discharges into bottom-up Behind 55 position of pore, so that the gas outside center 50 is entered in air pressure room from first row air inlet, it is relative to make to lose in air pressure room Atmospheric pressure and suction force are gone, so that 10 blade 12 of hinge loses self-locating function, the at the same time energy storage release of the first spring 81, To drive solid bar 30 movable upwards so that hinge can realize it is self-closing.

Among one concrete structure：The check valve 90 include one can slip and seal air-pressure chamber cup 56 wall of cup positioning Piston 91, gas leakage blocking 92 and one the 3rd spring 93,91 center of positioning piston set second row pore 911, and the gas leakage is blocked 92 include the stifled post 922 of a pad 921 and a projection at 921 center of pad, and the adaptation of stifled post 922 stretches into second row pore 911 It is interior, 93 one end contact pad 921 of the 3rd spring, other end energy contact is at the cup bottom of cup 56.The cup 56 is provided with a step 561, positioning piston 91 is abutted against on step 561, is moved along close 3rd spring, 93 direction for limiting positioning piston 91.This Two steam vents, 911 end face is recessed into taper hole from large to small relative to pad direction, and in order to ensure sealing property, preferably, positioning is lived The mounting groove 913 of the recessed annular of the 91 outer surface of revolution of plug, mounting groove built with leakproof seal circle 912, also stretch by the leakproof seal circle 912 Go out outside mounting groove 913 so that leakproof seal circle 912 is slidingly sealed the wall of cup for abutting against cup, with completely cut off, prevent outside air from The wall of cup of cup 56 is entered in the air pressure room of center.When down spiral slides exhaust pition, the gas in air pressure room is squeezed The perisporium of pressure second row pore so that gap, gas Jing second row pore perisporiums are produced between second row pore perisporium and stifled post 922 Discharge with the gap of stifled post 922, pad 921 and stifled post 922 shunk back by discharging gas extrusion pad and stifled post so that Gap is produced between pad and positioning piston diapire, gas is discharged by the gap between pad and positioning piston diapire again, discharged Afterwards in the case where the energy storage elastic force and its own resilient of the 3rd spring are acted on, so that the 3rd spring one end can support to arrive in the cup bottom of cup, separately One end with can contact pad 921 and stifled post 922 be reset to the surface perisporium of positioning piston, to completely cut off and prevent external air from the Two steam vent 911 is penetrated in air-pressure chamber.

, also including a bulge loop 32 for being fixed in 31 end of screw rod, the 32 recessed annular mounting groove 321 of bulge loop should for the solid bar 30 Leakproof seal circle 322 is socketed with annular mounting groove 321, the leakproof seal circle 322 is also stretched out outside annular mounting groove 321, with close Envelope is slipped in center, and to completely cut off, prevent in the air-pressure chamber that external air is penetrated in center, can be constituted air-pressure chamber, this is prevented Leakage sealing ring constitutes above-mentioned exhaust pition.As needed, (such as direct contact passes through pivot pivot can also to consolidate one slide of bar contact Connect slide), the slide is set to exhaust pition.

The adjustment seat 70 connects cup through plug, can adjust the axial location of the relative center of cup, adjusting The energy storage elastic force of the first spring and pretightning force and air-pressure chamber cavity size, realize adjusting self-closing dynamics size, self-closing speed speed. The adjustment seat 70 such as screw rod, the screw rod is bolted through plug, and links together with the cup bottom of cup, and this links together, such as Screw rod sets step surface, and the bottom surface at step surface contact cup cup bottom, screw rod can turn through the opening at glass bottom, and the another nut that arranges is spirally connected Screw rod end is simultaneously resisted against the top surface at glass bottom.

As needed, the volution 43 being located in center affixedly is may also include, the volution 43 is located at swivel nut and aerofluxuss are lived Between plug, volution is abutted against under swivel nut, and the screw rod of the solid bar is bolted through volution and is spirally connected again swivel nut.

Among the present embodiment：The first flange 51 is set in center 50, can not be turned in center 50 by the first flange 51 Move and be slidably connected and affixed volution 43；A clutch shaft bearing 44 is set between the swivel nut 40 and center 50 (by being arranged at center Third lip 53, can axially limit connection and be connected with clutch shaft bearing 44)；Set between 30 bottom face of solid bar and the first spring 81 Second bearing 84, (it is of course also possible to without arranging or second bearing 84 can be arranged)；The second flange 52 is set in center 50, Make plug 60 relatively unrotatable by the second flange and be slidably connected and be fixed in center.The blow-cook 82 includes one Pedestal 821, the pedestal 821 set one the 3rd steam vent 822, are installed with horn body 823 under the pedestal 821, and the pedestal 821 is supported on The rim of a cup periphery of cup, the horn body 823 are located in cup, connection 823 endoporus of horn body of the 3rd steam vent 822, and the 3rd Steam vent is such as recessed into taper from large to small towards horn body direction by pedestal one end；Center is abutted against in the sealing of pedestal 821 Set, preferably, the mounting groove 811 of the recessed annular of 821 side face of pedestal, built-in Lou sealing ring 824 of setting up defences of the mounting groove 811, the leakproof Sealing ring 824 is also stretched out outside mounting groove 811, is abutted against center 50 to seal, to completely cut off and prevent external air from penetrating into center Air-pressure chamber in.The centre mount 82 and cup 56 are connected by affixed screw 98.322nd, 824,912,562 leakproof seal circle All there is elasticity.The mounting groove 560 of the recessed annular of side face of the outer surface of revolution of the cup wall of cup, the mounting groove 560 are arranged a leakproof Sealing ring 562, the leakproof seal circle 562 are also stretched out outside mounting groove 560, to completely cut off and prevent outside air from entering the gas of center In pressure chamber.The centre mount 82 and cup 56 are connected by affixed screw 98.322nd, 824,912,562 leakproof seal loop material matter All there is elasticity, it is also possible to be made up of elastomeric material.The mounting groove of the recessed annular of side face of the outer surface of revolution of 56 wall of cup of cup 560, the mounting groove 560 is arranged a leakproof seal circle 562, and the leakproof seal circle 562 is also stretched out outside mounting groove 560, with completely cut off and Prevent outside air from entering in the air pressure room of center.

As needed, the volution 43 being located in center affixedly is may also include, the volution 43 is located at the aerofluxuss of swivel nut and lives Between plug, volution is abutted against under swivel nut, and the screw rod of the solid bar is bolted through volution and is spirally connected again swivel nut.(certainly, in the center Without setting volution 43, or volution can also can be set 43).

First blade, the 12 Jing external force of first hinge 10 is opened and can be rotated relative to 20 axis of the second hinge, so that first axle The relative swivel nut downward spiral of 33 energy of exhaust pition that solid bar 30 in set 11 has is movable towards check valve 90, at the same time air-pressure chamber Interior gas is discharged by first row air inlet, is discharged by check valve, now the first spring-compressed energy storage；First Hinge 10 continues on through opening and can rotate relative to 20 axis of the second hinge, so that the aerofluxuss that the solid bar 30 in the first axle sleeve 11 has are lived The relative swivel nut of 33 energy of plug continues downward spiral slip and is slipping over first row air inlet 55, and at the same time the gas in air pressure room passes through Check valve is discharged, so that the exhaust pition 33 in center can correspondence check valve 90 and gas leakage blocking 92 and retaining spring 83 With first row air inlet 55, so that air-pressure chamber can be constituted, in the process the elastic force of the first spring admittedly suffered by bar, self gravitation, Atmospheric pressure (suction force) balance of air-pressure chamber, so that the exhaust pition in air pressure room can correspondingly position piston and retaining spring and the One discharges into pore 55, so that the exhaust pition in air pressure room produces atmospheric pressure and (suction force) is balanced so that hinge during this Realize self-positioning.Closed by external force so that the relative hinge axis closure rotation of hinge, so that the solid bar in the first axle sleeve 11 30 exhaust pitions 33 having can relative swivel nut spirals move up, exhaust pition bottom-up not skidding off in the air pressure room (is moved back Go out) before first row air inlet so that the exhaust pition in air pressure room can correspondingly position piston, retaining spring, in the process gas The elastic force of the first spring suffered by exhaust pition that the solid bar in pressure chamber has, self gravitation, atmospheric pressure and (suction force) balance, It is relative so that the atmospheric pressure that produced by the suction force of exhaust pition of positioning piston, and it is bottom-up twitched and from it is lower to Upper slip, to hinge blades stop at a predetermined angular it is self-positioning after, at the same time the retaining spring compressed energy-storage elastic force produce Changing, so that the retaining spring one end can support to arrive in centre mount, other end energy contact positioning piston (check valve) is to positioning piston The step that (check valve) is supported to arrive in, the atmospheric pressure that at the same time the positioning piston is produced by (suction force) of exhaust pition, and It is bottom-up twitched and it is bottom-up slide when, at the same time the 3rd spring compressed energy-storage elastic force produce change, So that the 3rd spring one end can support to arrive in the cup bottom of cup, the other end is multiple with the pad 921 and stifled post 922 of the gas leakage blocking of energy contact The surface perisporium of position to positioning piston (check valve), to completely cut off and prevent outside air from entering in air pressure room from second row pore, So that exhaust pition can be self-positioning in air pressure room, as long as exhaust pition is bottom-up not to skid off (exit) first row air inlet Before, just can in air pressure room mobility coordinate hinge blades can be self-positioning in the orientation angle of predetermined set so that during this Hinge can be realized self-positioning.The intensity of the energy storage elastic force and pretightning force of the retaining spring in the air pressure room is more powerful, opposite side The contact tensile strength of the positioning piston of institute's contact is bound to more powerful, the retaining spring other end contact centre mount, it is relative with Positioning piston in air pressure room is made to be twitched and bottom-up slip by exhaust pition is bottom-up, in the process in air pressure room Exhaust pition suction force and the intensity of atmospheric pressure that produces is relative will be more powerful so that hinge blades are in predetermined angular Self-positioning positioning dynamics is bound to more powerful relatively.Hinge Jing external force closure can be rotated relative to hinge axis, and exhaust pition is certainly Under upwards without discharging into before pore, hinge can realize it is self-positioning, after exhaust pition slips over first row air inlet hole site, heart it In so that outside air is entered in air pressure room from first row air inlet, it is relative to make in air pressure room, to lose atmospheric pressure and suction force, with Make the first blade of the first hinge lose self-locating function, at the same time the first spring energy storage release, with can drive consolidate bar to Upper activity so that hinge can realize it is self-closing.

The hinge blades are needed when the orientation angle of a predetermined set is positioned, and when hinge blades Jing is opened, are logical Cross 98 spiral shell of affixed screw and enter through axle sleeve 11 that interlocking fixes thin bar 42 again change 41 is bolted through, so that axle sleeve, change, thin Bar is affixed together, and the change 41 and hinge 10 can also limit the axially movable of swivel nut 40, Gu turned along axis with energy positioning thread insert/bar Axial and circumferential size-spacing position that is dynamic and sliding, and the threaded of the screw rod and swivel nut in the axle sleeve by hinge is with energy Relative rotation, and the spacing dimension position setting of the axial and circumferential by first row air inlet in center and axle sleeve, Piston and retaining spring can correspondingly be positioned with by the exhaust pition in center, so that air-pressure chamber can be constituted, so that in air pressure room Exhaust pition produce atmospheric pressure and (suction force) and balance, it is relative so that positioning piston is produced by the suction force of exhaust pition Atmospheric pressure and it is bottom-up twitched, the relative orientation angle that can guarantee that predetermined set hinge.The energy storage of the retaining spring Elastic force and spring pre-tightening force intensity are more powerful, opposite side institute contact positioning piston 91 contact tensile strength be bound to it is stronger Greatly, the retaining spring other end supports to arrive in centre mount so that exhaust pition is bottom-up do not skid off (exit) first row air inlet before, The atmospheric pressure born in air pressure room and the intensity of (suction force) relatively can be more powerful, the compressed energy-storage elastic force of the retaining spring Necessarily ensure that the compressed energy-storage elastic force and spring pre-tightening force intensity that are greater than the first spring add the 3rd bullet with spring pre-tightening force intensity The compressed energy-storage elastic force and spring pre-tightening force intensity of spring so that hinge blades can be in the 80 of predetermined set degree of orientation angles to 180 It is self-positioning in degree orientation angle.

Wherein：The center of hinge can constitute air-pressure chamber, and the necessary requirement of the free predetermined set orientation angle of energy has Following shuttling movement flow process details, when hinge blades Jing is opened, and enters through axle sleeve 11 to exist by 98 spiral shell of affixed screw Interlocking fixes thin bar 42 again to be bolted through change 41, makes axle sleeve, change, thin bar affixed together, so that change 41 can coordinate hinge 10 and the rotation of axle sleeve 11, the change 41 and hinge 10 can also limit the axially activity of axle sleeve 40, Gu with can positioning thread insert/bar edge The axial and circumferential size-spacing position that axis is rotated and slided, and the first flange 51 is set by center 50, it is convex by first Edge 51 in the center 50 and can not be slidably connected and fixed spiro 43, and the axle sleeve by hinge in screw rod and swivel nut Threaded relatively rotating so that the solid bar in axle sleeve can relative swivel nut when rotating can also the rotation of relative axis move, And by 81 contact of the first spring in the center between 30 bottom face of solid bar and centre mount 82, and pass through the retaining spring 83 contacts are between centre mount 82 and check valve 90, and are located in cup 56 by the sealing of check valve 90 and abut against cup 56 It is interior, and by first row air inlet 55 along center axis and axial and circumferential size-spacing set location, and pass through the cup The outer surface of revolution of body wall of cup is arranged a leakproof seal circle, and by being socketed with sealing ring outside the solid bar, the sealing ring constitutes above-mentioned Exhaust pition, and the gap of cup opening and center is fixed at the opening of cup 51 and is sealed by the centre mount 82, and By setting the second flange 52 in center 50, in preventing plug 60 from being slidably connected and being fixed in relatively by the second flange 52 In heart set 50, the second axle sleeve 21 of second hinge 20 and plug 60 stretch out the part connection outside center 50, and by this Three spring one end contact pads and gas leakage blocking 92, other end energy contact is at the cup bottom of cup, so that hinge blades Jing opens it When can the axle sleeve axis of relative hinge rotate so that the exhaust pition that has of solid bar can the slip of relative swivel nut downward spiral towards unidirectional Valve 90 is movable, and the gas in air pressure room is discharged by first row air inlet, and is discharged by check valve, at the same time First spring-compressed energy storage, hinge continue to rotate relative to hinge axis, so that the exhaust pition that solid bar has can relative swivel nut spiral shell Rotation continues after slide downward slips over first row air inlet hole site, at the same time second row of the gas in air pressure room by check valve Pore 911 is discharged, relative in hinge center to form air-pressure chamber.Wherein：The center 50 is along axis and axial direction and week An inside and outside first row air inlet for running through is provided with to position so that exhaust pition can correspond to check valve with gas leakage blocking and positioning bullet Spring and first row air inlet, so that air-pressure chamber can be constituted；Axis and axial direction and week of the first row air inlet along center and axle sleeve To size-spacing set location, correspondence hinge is self-positioning in 90 degree of orientation angle starting points of a predetermined set orientation angle, and Below 90 degree of orientation angles can self-closing boundary's point, both hinge turn to 90 degree of orientation angle starting points of a predetermined set orientation angle It is self-positioning, and can be self-closing below 90 degree of orientation angles boundary's point when, exhaust pition correspondence check valve and retaining spring and gas leakage Blocking and first row air inlet, can be constituted air-pressure chamber, at the same time the air-pressure chamber can correspond to and coordinate hinge can make a reservation for It is self-positioning in the orientation angle of setting, so that hinge can be freely made by oneself in the 90 of predetermined set degree to 180 degree orientation angle Position, and can be self-closing below 90 degree of orientation angles so that hinge can free predetermined set orientation angle.

Embodiment two

It with one difference of embodiment is：Figure 26 to Figure 31 is refer to, the hinge is butterfly-type hinge assembly, and this One hinge 10 sets one first blade 12 and two intervals are fixed in the first axle sleeve 11 of the first blade, and second hinge 20 includes one Two blades 22 and second axle sleeve 21 for being fixed in the second blade.The interval of the wheelbase of second axle sleeve 21 and two first axle sleeves 11 Spacing is adapted to, and the adaptation of the second axle sleeve 21 is positioned between two first axle sleeves 11.The swivel nut 40 is fixed in one by affixed screw 98 In one axle sleeve 11 and it is rotatably connected in 21 one end of the second axle sleeve；The plug 60 is fixed in the second axle sleeve 21 by affixed screw 98 In in one end, and the part stretched out outside center 50 is connected in another first axle sleeve 11 so that the first hinge and the second hinge Can relatively rotate.Second axle sleeve 21 constitutes center 50, and the center 50 is provided with an inside and outside first row air inlet 55 for running through, The cup 56 and the second axle sleeve 21 along axis and axial same circumferential position, be respectively provided with one it is inside and outside run through discharge into pore 95, (the cup 95) body 56 and the second axle sleeve 21 can also discharge into pore without arranging；91 (check valve) 90 of positioning piston changes to set does not have second Steam vent 911, relative is that (the positioning piston 91 is also also provided with second row pore 911 certainly without arranging gas leakage blocking 92 Block 92) with gas leakage.The cup 56 and center 50 discharge into 95 set location of pore, positioned at positioning 91 (check valve) 90 of piston Along the up and down track of axial and circumferential of 56 wall of cup of cup, the center 50 and cup 56 are along between axis and axial and circumferential Away from size positions, it is respectively provided with one and discharges into pore 95, (certainly, the cup 56 and the second axle sleeve 21 can also discharges into gas without arranging 95), axis and axial and circumferential size-spacing set location of the first row air inlet 55 along center correspond to hinge one in hole 90 degree of orientation angle starting points of predetermined set orientation angle are self-positioning, and can be self-closing below 90 degree of orientation angles boundary's point, both 90 degree of orientation angle starting points that hinge turns to a predetermined set orientation angle are self-positioning, and can be certainly below 90 degree of orientation angles During the boundary's point for closing, the correspondence of exhaust pition 33 positions piston 91 (check valve) and retaining spring 83 and first row air inlet 55, with energy Air-pressure chamber is constituted, at the same time the air-pressure chamber can correspond to and coordinate hinge with can be self-positioning in the orientation angle of predetermined set, So that hinge can be free self-positioning in the 90 of predetermined set degree to 180 degree orientation angle, and below 90 degree of orientation angles Can be self-closing.The positioning piston 91 is check valve 90.The plug is fixed in the other end of center, and the swivel nut and plug are spaced； Be provided between the swivel nut and plug in the center solid bar, the first spring, centre mount, retaining spring, positioning piston (check valve) and 3rd spring；The screw rod of the solid bar is spirally connected swivel nut and solid bar is provided with exhaust pition, and exhaust pition sealing is slipped in center；Should First spring top is against between solid bar and centre mount, and the retaining spring contact is in centre mount and positions between piston (check valve), Positioning piston (check valve) sealing is located in center, constitutes air-pressure chamber between the exhaust pition and positioning piston (check valve)； Wherein：Towards positioning piston (check valve) activity, air pressure room air Jing first row air inlets are discharged the exhaust pition, cup Body, the pore that discharges into of the second axle sleeve are discharged, and exhaust pition slides the air Jing Jing after first row air inlet hole site, in air pressure room Cup, the pore that discharges into of the second axle sleeve (center) are discharged.The bearing arranged between first spring and solid bar changes and sets pad , yet can use certainly bearing.The volution 43 is by affixed screw 98 so that volution 43 can not slidably be fixed in the second axle Cover in 21 (centers), (certainly can also be without arranging volution 43 in the center), the volution 43 is located at swivel nut 40 times and is somebody's turn to do Screw rod 31 is bolted through volution 43 and is spirally connected again swivel nut 40, so that the volution 43 can limit and control 31 relative 40 turns of the swivel nut of screw rod It is dynamic to slide and mobile, produced spacing dimension coefficient, Gu with energy positioning thread insert/bar along axis rotation and the axial direction slided and week To size-spacing position, it is that the relative blade for ensureing to coordinate hinge can free predetermined set orientation angle.The swivel nut is by affixed Screw 98 is fixed in another first axle sleeve 11 and is rotatably connected in 21 one end of the second axle sleeve, and the plug 60 passes through affixed screw 98 are fixed in the second axle sleeve 21 and are connected in 11 another first axle sleeve, 11 one end of the first axle sleeve so that first hinge and the Two hinges can be relatively rotated.

The swivel nut 40 can be rotated and can not be slidably connected in center 50, another first axle sleeve of first hinge 10 11 and the part stretched out outside center 50 of swivel nut 40 it is affixed, this is affixed for example：Arrange 98 spiral shell of affixed screw to enter through the first axle sleeve 11 being locked into affixed swivel nut 40, so that the first axle sleeve 11 and swivel nut 40 are affixed together, makes first hinge and the first axle sleeve can also The axially activity of swivel nut 40 is limited, Gu the axial and circumferential size-spacing position for being rotated along axis with energy positioning thread insert/bar and being slided Put, be that relative guarantee cooperation 10 blade 12 of hinge can be self-positioning in the orientation angle of predetermined set.The plug 60 passes through affixed spiral shell Follow closely 98 spiral shells to enter through center 50 being locked into affixed plug 60, so that plug 60 is fixed in center 50, first hinge 10 Another first axle sleeve 11 and plug 60 stretch out outside center 50 part connection.

Hinge Jing is opened and can be rotated relative to the axle sleeve axis of hinge, so that the exhaust pition energy that the solid bar in center has Movable towards positioning piston 91 with respect to swivel nut downward spiral, at the same time the gas in air pressure room is outwards arranged by first row air inlet Go out, cup, the second axle sleeve (center) discharge into pore and discharge, now the first spring-compressed energy storage；In the axle sleeve of hinge Gu the exhaust pition that bar has continues relative swivel nut axis downward spiral slide, so that exhaust pition slips over downwards first row air inlet Behind hole site, at the same time the gas in air pressure room passes through cup and the second axle sleeve (center) discharges into pore and discharges, with The exhaust pition that the solid bar in center has is enable correspondingly to position piston (check valve) and retaining spring and first row air inlet, So that air-pressure chamber can be constituted, the elastic force of the first spring admittedly suffered by bar, self gravitation, the exhaust pition in air pressure room in the process Piston, retaining spring can be correspondingly positioned, so that the exhaust pition in air pressure room can produce atmospheric pressure and (suction force) balances each other, is made During this hinge can realize it is self-positioning.Hinge is closed so that solid bar energy swivel nut spiral upward sliding relatively, exhaust pition In air pressure room it is bottom-up do not skid off (exit) first row air inlet before so that the exhaust pition in air pressure room correspondingly can be positioned Piston (check valve) and retaining spring, the first spring suffered by exhaust pition that the solid bar in air pressure room has in the process Elastic force, self gravitation, atmospheric pressure and (suction force) balance each other, relative to enable positioning piston (check valve) and retaining spring by aerofluxuss The suction force of piston and the atmospheric pressure that produces, and it is bottom-up twitched and the bottom-up slip of the wall of cup in cup, To hinge stop at a predetermined angular it is self-positioning after, or it is bottom-up slide into when discharging into pore position so that outside is empty Gas is entered in air pressure room from the pore that discharges into of the second axle sleeve (center), cup, stops at an intended orientation angle certainly to hinge After positioning, at the same time the compressed energy-storage elastic force of the retaining spring produces change, so that retaining spring one end can support to arrive in centre mount, Other end energy contact positions piston, and at the same time the compressed energy-storage elastic force of the 3rd spring produces change, so that the 3rd spring one End can support to arrive in cup cup bottom, other end energy contact positioning piston, so that the 3rd spring and retaining spring are engaged, it is relative with energy phase Mutually contact positioning piston (check valve) is to resetting, or so that the 3rd spring and retaining spring cooperate, relative mutually pushing up To positioning piston (check valve) to resetting, air-pressure chamber is entered so that the pore that discharges into of the outside air again from center and cup can be completely cut off It is interior, balance with the atmospheric pressure that the period positioning piston is produced by (suction force) of exhaust pition, so that the row in center Gas piston can correspondingly position piston (check valve) and retaining spring, so that exhaust pition can be self-positioning in air pressure room, as long as row Before gas piston does not skid off (exit) first row air inlet, just energy mobility coordinates hinge in air pressure room in the positioning of predetermined set Angle is self-positioning.The intensity of the energy storage elastic force and pretightning force of the retaining spring in the air pressure room is more powerful, opposite side institute contact The contact tensile strength of positioning piston be bound to more powerful, the retaining spring other end contact centre mount, it is relative so that air pressure Indoor positioning piston is twitched and bottom-up slip by exhaust pition is bottom-up, the aerofluxuss in air pressure room in the process The suction force of piston and the intensity of atmospheric pressure that produces is relative will be more powerful so that the blade of hinge is made by oneself in predetermined angular The positioning dynamics of position is bound to more powerful relatively.Exhaust pition is bottom-up do not skid off (exit) first row air inlet before, Hinge can realize it is self-positioning, after exhaust pition slips over (exit) first row air inlet hole site, so that center among heart Outside air is entered in air pressure room from first row air inlet, at the same time the energy storage release of the first spring, to drive solid bar upwards Activity, hinge can be realized self-closing.The compressed energy-storage elastic force and spring pre-tightening force intensity of the retaining spring necessarily ensure to be greater than the The compressed energy-storage elastic force and spring pre-tightening force intensity of one spring add the compressed energy-storage elastic force and spring pre-tightening force intensity of the 3rd spring, Enable hinge blades self-positioning to 180 degree orientation angle in 80 degree of orientation angles of predetermined set.

Wherein：The center of hinge can constitute air-pressure chamber, and the necessary requirement of the free predetermined set orientation angle of energy has Following shuttling movement flow process details, when hinge blades Jing is opened, can be rotated and slidably can not be connected by the swivel nut 40 It is connected in center 50, the part that the first axle sleeve 11 of first hinge 10 and swivel nut 40 are stretched out outside center 50 is affixed, this is solid Connect for example：Arrange 98 spiral shell of affixed screw to enter through the first axle sleeve 11 in the affixed swivel nut 40 of interlocking, first hinge and the first axle sleeve Upper end can also limit the axially activity of axle sleeve 40, Gu the axial and circumferential for being rotated along axis with energy positioning thread insert/bar and being slided The threaded of screw rod and swivel nut in size-spacing position, and the axle sleeve by hinge relatively rotating so that in axle sleeve Solid bar can relative swivel nut when rotating can also relative axis rotation slip, and by 81 contact of the first spring in the center Between 30 bottom face of solid bar and centre mount 82, and by 83 contact of retaining spring centre mount 82 and positioning piston 91 it Between, and be located in cup 56 and abut against in cup 56 by the sealing of positioning piston 91, and pass through 55 edge of first row air inlet The axis and axial and circumferential size-spacing set location of center, and to be arranged a leakproof by the outer surface of revolution of the cup wall of cup close Seal, and entered through the second axle sleeve 21 in interlocking volution 43 by 98 spiral shell of affixed screw, so that volution 43 can not be slidably connected It is fixed in center 50, the volution 43 is located at swivel nut 40 times and the screw rod 31 and is bolted through volution 43 and is spirally connected again swivel nut 40, with Enable the volution 43 to limit and control the screw rod 31 slip and mobile, produced spacing dimension coefficient are rotated relative to swivel nut 40, Gu the axial and circumferential size-spacing position for being rotated along axis with energy positioning thread insert/bar and being slided, and by being socketed outside the solid bar There is sealing ring, the sealing ring constitutes above-mentioned exhaust pition, and is fixed in by the centre mount 82 at the opening of cup 51 and close The gap of sealing cup body opening and center, and enter through center 50 in interlocking stifled by 98 spiral shell of affixed screw by the plug 60 60, so that plug 60 is fixed in center 50, the first axle sleeve 11 of first hinge 10 and plug 60 stretch out center 50 Outer part connection, and piston is positioned by the 3rd spring one end contact, other end energy contact is at the cup bottom of cup, so as to close Page vanes can be rotated relative to the axle sleeve axis of hinge when opening, so that the exhaust pition that solid bar has can relative swivel nut spiral Slide downward towards positioning piston 91 it is movable, the gas in air pressure room is discharged by first row air inlet, and pass through cup, in The pore that discharges into of heart set is discharged, at the same time the first spring-compressed energy storage, and hinge continues to rotate relative to another hinge axis, So that exhaust pition is after first row air inlet hole site is slipped over, at the same time the gas in air pressure room is by cup, center Discharge into pore to discharge, it is relative in hinge center to constitute air-pressure chamber.Wherein：The center 50 is along axis and axial direction and week An inside and outside first row air inlet for running through is provided with to position so that exhaust pition can correspond to check valve and retaining spring and first row Air inlet, so that air-pressure chamber can be constituted；The first row air inlet arranges position along the axis and axial and circumferential size-spacing of center Put, correspondence hinge is self-positioning in 90 degree of orientation angle starting points of a predetermined set orientation angle, and below 90 degree of orientation angles Can self-closing boundary's point, both hinge turn to a predetermined set orientation angle 90 degree of orientation angle starting points it is self-positioning, and at 90 degree Below orientation angle can self-closing boundary's point when, exhaust pition correspondence positioning piston and retaining spring and first row air inlet 55, Can be constituted air-pressure chamber, at the same time the air-pressure chamber can correspond to and coordinate hinge to make by oneself in the orientation angle of predetermined set Position so that hinge can be free self-positioning in the 90 of predetermined set degree to 180 degree orientation angle, and 90 degree of orientation angles with Lower energy is self-closing so that hinge can free predetermined set orientation angle.

Embodiment three

It with two difference of embodiment is：Figure 32 to Figure 38 is refer to, the hinge is master and slave type hinge assembly, should First hinge 10 sets one first blade 12 and two intervals are fixed in the first axle sleeve 11 of the first blade 12, and second hinge 20 includes One second blade 22 and second axle sleeve 21 for being fixed in the second blade 22.First axle sleeve 11 of first hinge 10 is fixed in The upper and lower end parts of one blade 12, second axle sleeve 21 are fixed in the middle part of the second blade 22, set breach in the middle part of first blade 12, Second blade 22 is adapted to breach.The interval pitch adaptation of the wheelbase of second axle sleeve 21 and two first axle sleeves 11, second axle 21 adaptation of set is positioned between two first axle sleeves 11.The swivel nut 40 is fixed in the first axle sleeve 11 by affixed screw 98, and the company of rotation It is connected in 21 one end of the second axle sleeve；The plug 60 is fixed in the second axle sleeve 21 and is stretched out outside center 50 by affixed screw 98 Part be connected in another first axle sleeve 11 so that the first hinge and the second hinge can be relatively rotated.Second axle sleeve, 21 structure Into center 50, the center 50 position along the axial and circumferential directions is provided with an inside and outside first row air inlet for running through so that aerofluxuss are lived Plug can correspond to check valve and retaining spring and gas leakage blocking and first row air inlet, can be constituted air-pressure chamber；The first row air inlet Axial and circumferential size-spacing set location of the hole along the axis and axle sleeve of center, correspondence hinge is in a predetermined set orientation angle 90 degree orientation angle starting points of degree are self-positioning, and the self-closing boundary's point of energy below 90 degree of orientation angles, and both to turn to one pre- for hinge Surely 90 degree orientation angle starting points for arranging orientation angle are self-positioning, and arrange during the self-closing boundary's point of energy below 90 degree orientation angles Gas piston correspondence check valve and retaining spring and first row air inlet, can be constituted air-pressure chamber, at the same time the air-pressure chamber can be right Should be with cooperation hinge with can be self-positioning in the orientation angle of predetermined set, so that hinge can be at the 90 of predetermined set degree to 180 It is free self-positioning in degree orientation angle.The volution 43 passes through affixed screw 98 so that volution 43 can not be slidably connected is fixed on In second axle sleeve 21 (center), (can also be without arranging volution 43 in the center), the volution 43 be located at swivel nut 40 times and The screw rod 31 is bolted through volution 43 and is spirally connected again swivel nut 40, so that the volution 43 can limit and control the 31 relative swivel nut 40 of screw rod Rotate and slide and mobile, produced spacing dimension coefficient, it is solid with can positioning thread insert/bar rotate along axis and the axial direction slided with Circumferential size spaced position, is that the relative orientation angle for ensureing the free predetermined set of 10 blade of cooperation hinge, 12 energy is self-positioning.Should Swivel nut is fixed in another first axle sleeve 11 and is rotatably connected in 21 one end of the second axle sleeve, the plug 60 by affixed screw 98 It is fixed in the second axle sleeve 21 by affixed screw 98 and is connected to 11 another first axle sleeve 11 of the first axle sleeve so that first conjunction Page and the second hinge can be relatively rotated.The plug 60 is fixed in the second axle sleeve 21 by affixed screw 98 and is connected to first axle Cover in 11 another first axle sleeve one end, the swivel nut 40 is fixed in another first axle sleeve 11 by affixed screw 98 and rotates connection In 21 one end of the second axle sleeve, the swivel nut and plug are spaced；Solid bar, the first bullet are provided between the swivel nut and plug in the center Spring, centre mount, retaining spring, check valve and the 3rd spring；The screw rod of the solid bar is spirally connected swivel nut and solid bar is provided with exhaust pition, arranges Gas piston seal is slipped in center；First spring top is against between solid bar and centre mount, and the retaining spring contact is in Between heart seat and check valve, check valve sealing is located in center, the exhaust pition and check valve and retaining spring and gas leakage Blocking 92 and first row air inlet constitute air-pressure chamber.

The swivel nut 40 can be rotated and can not be slidably connected in center 50, and the swivel nut 40 stretches out the portion outside center 50 Divide and the first axle sleeve 11 is affixed, this is affixed for example：Arrange 98 spiral shell of affixed screw to enter through the first axle sleeve 11 in interlocking swivel nut 40, with Make the first axle sleeve 11 and swivel nut 40 affixed together, make first hinge and the first axle sleeve limit the axially activity of swivel nut 40, Gu the axial and circumferential size-spacing position for being rotated along axis with energy positioning thread insert/bar and being slided, to ensure that hinge is realized making by oneself Position and it is self-closing.The plug 60 is entered through center 50 by 98 spiral shell of affixed screw is locking affixed plug 60, so that plug 60 is solid It is connected in center 50, another first axle sleeve 11 of first hinge 10 and plug 60 stretch out the part connection outside center 50.

By the first row air inlet 55, along center 50, and the axial and circumferential size-spacing position of axle sleeve 11 arrange, Can rotate and can not be slidably connected in center 50 with by the swivel nut 40, the first axle sleeve 11 of first hinge 10 and spiral shell The part that set 40 is stretched out outside center 50 is affixed, and this is affixed for example：Arrange 98 spiral shell of affixed screw to enter through the first axle sleeve 11 in lock Affixed swivel nut 40 is connect, first hinge and the first axle sleeve can also limit the axially movable of swivel nut 40, Gu with energy positioning thread insert/bar edge The axial and circumferential size-spacing position that axis is rotated and slided, and by the screw rod 31 and swivel nut 40 in hinge 10 and axle sleeve 11 Threaded, with can relative rotation slide, and entered through the second axle sleeve 21 locking volution 43 by 98 spiral shell of affixed screw, So as to volution 43 can not be slidably connected be fixed in center 50, the volution 43 is located under swivel nut and the screw rod 31 is bolted through Volution 43 is spirally connected swivel nut 40 again, so as to the volution 43 can limit and control the screw rod 31 and rotate relative to swivel nut 40 and slide and mobile, Produced spacing dimension coefficient, Gu the axial and circumferential size-spacing position for being rotated along axis with energy positioning thread insert/bar and being slided Put, so as to the solid bar 30 in center 50 can be rotated relative to swivel nut 40 slide, can produce between fixed axial and circumferential size Movable towards check valve 90 away from downward spiral, at the same time the gas in air pressure room is discharged by first row air inlet 55 and single Discharge to the second row pore 911 of valve 90, exhaust pition 33 slips over downwards first row air inlet 55, at the same time air-pressure chamber Interior gas is discharged by the second row pore 911 of check valve 90, so that the exhaust pition 33 in center can correspond to list To valve 90 and gas leakage blocking 92 and retaining spring 83 and first row air inlet 55, so that air-pressure chamber can be constituted, the row in air pressure room is made Gas piston can produce atmospheric pressure and (suction force) and balance so that hinge can realize it is self-closing.

The screw rod 31 of the solid bar 30 is spirally connected swivel nut 40 and solid bar 30 is provided with exhaust pition 33, and the sealing of exhaust pition 33 is slipped In center 50.The centre mount 82 is fixed at the opening of cup 51 and seals the gap of cup opening and center.

Among one concrete structure：The check valve 90 include one can slip and seal air-pressure chamber cup 56 wall of cup positioning Piston 91, gas leakage blocking 92 and one the 3rd spring 93,91 center of positioning piston set second row pore 911, and the gas leakage is blocked 92 include the stifled post 922 of a pad 921 and a projection at pad center, and the adaptation of stifled post 922 is stretched in second row pore 911, 3rd spring one end contact pad, other end energy contact at the cup bottom of cup, (check valve 90 is exactly to position piston 91).Should Cup 56 is provided with a step 561, and positioning piston is abutted against on step, for limiting positioning piston along near the 3rd spring direction fortune It is dynamic.911 end face of second row pore is recessed into taper hole from large to small relative to pad direction, in order to ensure sealing property, preferably, The mounting groove 913 of the recessed annular of the outer surface of revolution of positioning piston, mounting groove built with leakproof seal circle 912, the leakproof seal circle 912 Also stretch out outside mounting groove 913, so that leakproof seal circle 912 is slidingly sealed the wall of cup for abutting against cup.When exhaust pition down spiral shell When rotation is dynamic, the perisporium of the gas extrusion second row pore in air pressure room so that produce between second row pore perisporium and stifled post 922 The gap of raw gap, gas Jing second row pore perisporiums and stifled post 922 is discharged, and is caused by discharging gas extrusion pad and stifled post Pad 921 and stifled post 922 shrink back so that gap is produced between pad and positioning piston diapire, then by pad and positioning piston Gap between diapire is discharged, after discharge in the case where the energy storage elastic force and its own resilient of the 3rd spring are acted on, so that the 3rd spring One end can support to arrive in the cup bottom of cup, and the other end is reset to the surface perisporium of positioning piston with energy contact pad 921 and stifled post 922, To completely cut off and prevent external air from penetrating in air-pressure chamber from second row pore 911.

, also including a bulge loop 32 for being fixed in 31 end of screw rod, the 32 recessed annular mounting groove 321 of bulge loop should for the solid bar 30 Leakproof seal circle 322 is socketed with annular mounting groove 321, the leakproof seal circle 322 is also stretched out outside annular mounting groove 321, with close Envelope is slipped in center, and the leakproof seal circle constitutes above-mentioned exhaust pition.As needed, one slide of bar contact can also be consolidated (such as Direct contact passes through pivot pivot joint slide), the slide is set to exhaust pition.

The adjustment seat 70 connects cup through plug, can adjust axial location of the cup with respect to center, corresponding to The energy storage elastic force and pretightning force and air-pressure chamber cavity size of the first spring are adjusted, realizes adjusting self-closing dynamics size, self-closing speed Speed.The adjustment seat 70 such as screw rod, the screw rod is bolted through plug, and links together with the cup bottom of cup, and this is connected to one Rise, such as screw rod sets step surface, and the bottom surface at step surface contact cup cup bottom, screw rod can turn through the opening at glass bottom, separately arrange spiral shell Mother is spirally connected and screw rod end is resisted against the top surface at glass bottom.

Among the present embodiment：Entered through the second axle sleeve 21 by 98 spiral shell of affixed screw and be locked into affixed volution 43, so that spiral shell Ring 43 can not be slidably connected and be fixed in center 50, and the volution 43 is located at swivel nut 40 times and the screw rod 31 is bolted through volution 43 are spirally connected swivel nut 40 again, so as to the volution 43 can limit and control the screw rod 31 and rotate relative to swivel nut 40 and slide and mobile, are produced Raw spacing dimension coefficient, Gu with the rotation of energy positioning thread insert/bar and the axial and circumferential size-spacing position of slip；The swivel nut Set a clutch shaft bearing 44 (by being arranged third lip 53 at center, to connect and affixed axially limiting between 40 and center 50 There is clutch shaft bearing 44)；Second bearing 84 is set between 30 bottom face of solid bar and the first spring 81, (it is of course also possible to without arrange or Second bearing can be set 84)；The second flange 52 is set in center 50, by the second flange make plug 60 it is relatively unrotatable and It is slidably connected and is fixed in center.The blow-cook 82 includes a pedestal 821, and the pedestal 821 sets one the 3rd steam vent 822, horn body 823 is installed with the pedestal 821, the pedestal 821 is supported on the rim of a cup periphery of cup, and the horn body 823 is located at In cup, the 3rd steam vent 822 connects 823 endoporus of horn body, and the 3rd steam vent is such as towards horn body by pedestal one end Direction is recessed into taper from large to small；Center is abutted against in the sealing of pedestal 821, preferably, the peace of the recessed annular of 821 side face of pedestal Tankage 811, built-in Lou sealing ring 824 of setting up defences of the mounting groove 811, the leakproof seal circle 824 are also stretched out outside mounting groove 811, with close Envelope is abutted against center 50, to completely cut off and prevent external air from penetrating in the air-pressure chamber of center.The centre mount 82 and cup 56 are logical Cross affixed screw 98 to connect.322nd, 824,912,562 leakproof seal circles all have elasticity, it is also possible to by elastomeric material system Into.The mounting groove 560 of the recessed annular of side face of the outer surface of revolution of the cup wall of cup, the mounting groove 560 are arranged a leakproof seal circle 562, the leakproof seal circle 562 is also stretched out outside mounting groove 560, to completely cut off and prevent outside air from entering the air-pressure chamber of center It is interior.

First blade, the 12 Jing external force of the first hinge 10 of hinge is opened and can be rotated relative to 20 axis of the second hinge, so that the It is movable towards check valve 90 that the relative swivel nut downward spiral of 33 energy of exhaust pition that solid bar 30 in two axle sleeves 21 has is slided, same with this When air-pressure chamber in gas discharged by first row air inlet, discharged by the second row pore 911 of check valve, this When the first spring-compressed energy storage；First hinge 10 continues on through relative second hinge, 20 axis of opening energy and is rotated further, so that second The relative swivel nut of 33 energy of exhaust pition that solid bar 30 in axle sleeve 21 has continues downward spiral slip and is slipping over first row air inlet 55, now the gas in air pressure room discharged by check valve so that exhaust pition can correspond to check valve and retaining spring and Gas leakage blocking and first row air inlet, so that air-pressure chamber can be constituted, in the process the elastic force of the first spring admittedly suffered by bar, itself Gravity, the atmospheric pressure (suction force) of air-pressure chamber balance each other, and exhaust pition in air-pressure chamber coordinate positioning piston, retaining spring with The exhaust pition in air pressure room is made to produce atmospheric pressure and (suction force) so that hinge is realized self-positioning during this.By outer Power is closed so that the relative hinge axis closure rotation of hinge, and exhaust pition bottom-up not skidding off (exit) in air pressure room discharges into Before pore, so that the exhaust pition in air pressure room can correspondingly position piston, retaining spring, the solid bar in air pressure room in the process The elastic force of the first spring suffered by the exhaust pition having, self gravitation, atmospheric pressure and (suction force), it is relative so that positioning piston By (suction force) of exhaust pition produce atmospheric pressure, and it is bottom-up twitched and bottom-up slip, to hinge Blade stop at a predetermined set orientation angle it is self-positioning after, at the same time the retaining spring compressed energy-storage elastic force produce change Change, with support centre mount with energy support positioning piston (check valve) to the step that piston (check valve) is supported to arrive in is positioned, at the same time The atmospheric pressure that the positioning piston is produced by the suction force of exhaust pition, and bottom-up twitched and bottom-up slided When, the compressed energy-storage elastic force of the 3rd spring produces change, so that the 3rd spring one end can support to arrive in the cup bottom of cup, separately The relative pad 921 and stifled post 922 with the gas leakage blocking of energy contact in one end is reset to the surface perisporium of positioning piston (check valve), with Isolation outside air is entered in air pressure room from second row pore, so that exhaust pition can be self-positioning in air pressure room, as long as aerofluxuss Piston is bottom-up do not skid off (exit) first row air inlet before, just can in air pressure room mobility coordinate hinge blades can be pre- The fixed orientation angle for arranging is self-positioning so that during this, hinge can be realized self-positioning.The storage of the retaining spring in the air pressure room Can elastic force and pretension force intensity it is more powerful, opposite side institute contact positioning piston contact tensile strength be bound to it is more powerful, The retaining spring other end contact centre mount is relative so that positioning piston in air pressure room is twitched by exhaust pition is bottom-up And bottom-up slip, in the process the suction force of the exhaust pition in air pressure room and the intensity of atmospheric pressure that produces is relative Will be more powerful, so that the blade of hinge is more powerful with respect to being bound in the self-positioning positioning dynamics of an intended orientation angle.Should The compressed energy-storage elastic force and spring pre-tightening force intensity of retaining spring necessarily ensure the compressed energy-storage elastic force for being greater than the first spring and Spring pre-tightening force intensity adds the compressed energy-storage elastic force and spring pre-tightening force intensity of the 3rd spring so that hinge blades can be set predetermined The 80 degree of orientation angles put are self-positioning to 180 degree orientation angle.

Wherein：The center of hinge can constitute air-pressure chamber, and the necessary requirement of the free predetermined set orientation angle of energy has Following shuttling movement flow process details, when hinge blades Jing is opened, is to enter through first axle to be enclosed within by the affixed screw spiral shell Spiral shell enters to lock swivel nut, so that swivel nut is affixed and is connected in the second axle sleeve in the first axle sleeve, the first axle sleeve of first hinge Upper end can also limit the axially activity of axle sleeve 40, Gu with the rotation of energy positioning thread insert/bar and the axial and circumferential size of slip The threaded of screw rod and swivel nut in spaced position, and the axle sleeve by hinge is relatively rotating, so that consolidating in axle sleeve Bar can relative swivel nut when rotating can also relative axis rotation slip, and consolidated by 81 contact of the first spring in the center It is between 30 bottom face of bar and centre mount 82, and by 83 contact of retaining spring between centre mount 82 and check valve 90 and logical Cross the sealing of positioning piston 91 to be located in cup 56 and abut against in cup 56, and by first row air inlet 55 along center Axis and axial and circumferential size-spacing set location, and a leakproof seal circle is arranged by the outer surface of revolution of the cup wall of cup, With by being socketed with sealing ring outside the solid bar, the sealing ring constitutes above-mentioned exhaust pition, and is fixed in by the centre mount 82 At the opening of cup 51 and the gap of cup opening and center is sealed, and enter to wear by 98 spiral shell of affixed screw by the plug 60 Center 50 is crossed in interlocking plug 60, so that plug 60 is fixed in center 50,11 He of the first axle sleeve of first hinge 10 Plug 60 stretches out the part connection outside center 50, and passes through the 3rd spring one end contact pad and gas leakage blocking 92, another End energy contact is at the cup bottom of cup, so as to can rotate relative to the axle sleeve axis of hinge when hinge blades Jing is opened, so that solid bar The exhaust pition having swivel nut downward spiral can be slided relatively, and exhaust pition downward spiral is movable towards check valve 90, at the same time Gas in air pressure room is discharged by first row air inlet, and is discharged by the second row pore 911 of check valve 90, At the same time the first spring-compressed energy storage, hinge continue to rotate relative to hinge axis, and exhaust pition is through first row air inlet hole position Postpone, at the same time the gas in air pressure room is discharged by the second row pore 911 of check valve 90, can form air pressure Room.Wherein：The center 50 is provided with an inside and outside first row air inlet for running through along axis and axial and circumferential position so that aerofluxuss Piston can correspond to check valve and retaining spring and gas leakage blocking and first row air inlet, can be constituted air-pressure chamber；This first discharges into Axial and circumferential size-spacing set location of the pore along center and axle sleeve, correspondence hinge is in a predetermined set orientation angle 90 degree of orientation angle starting points are self-positioning, and can be self-closing below 90 degree of orientation angles boundary's point, both hinge turn to one and predetermined set 90 degree of orientation angle starting points for putting orientation angle are self-positioning, and can be self-closing below 90 degree of orientation angles boundary's point when, aerofluxuss are lived Plug correspondence check valve and can position piston and gas leakage blocking and first row air inlet, so that air-pressure chamber can be constituted, the at the same time gas Pressure chamber can correspond to and coordinate hinge with can be self-positioning in the orientation angle of predetermined set, so that hinge can be the 90 of predetermined set Spend to 180 degree orientation angle it is free self-positioning, and can be self-closing with respect to enabling hinge freely pre- below 90 degree orientation angles Orientation angle is set surely.

The above, only this utility model preferred embodiment, therefore this utility model enforcement can not be limited according to this Scope, i.e., the equivalence changes made according to this utility model the scope of the claims and description and modification, all should still belong to this practicality new In the range of type covers.

Claims (8)

1. a kind of vapour-pressure type can self-positioning and self-closing hinge, including two hinges, solid bar and swivel nut, each hinge all set an axle sleeve The blade outside axle sleeve is fixed in one, two hinge can be relatively rotated, the solid bar has screw rod；It is characterized in that：Also include stifled Head and center, the center and axle sleeve are respectively provided with what is run through inside and outside one along the size-spacing position of axis and axial and circumferential First row air inlet；The center is socketed in the axle sleeve of two hinges；The swivel nut rotationally can be located in center and affixed one Axle sleeve, the plug are located in center and affixed another axle sleeve, and the swivel nut and plug are spaced, the swivel nut and plug in the center Between be provided with solid bar, the first spring, centre mount, retaining spring and check valve；The screw rod of the solid bar is spirally connected swivel nut and solid bar is provided with row Gas piston, exhaust pition sealing are slipped in center；First spring top is against between solid bar and centre mount, the retaining spring Between centre mount and check valve, the check valve sealing is located in center contact, constitutes gas between the exhaust pition and check valve Pressure chamber；Wherein：The exhaust pition is discharged towards check valve activity, gas room air Jing first row air inlets, check valve, aerofluxuss Piston is slided Jing after first row air inlet hole site, and the air Jing check valves in air pressure room are discharged.

2. a kind of vapour-pressure type according to claim 1 can self-positioning and self-closing hinge, it is characterised in that：The check valve includes One can slip and seal the positioning piston of air-pressure chamber, gas leakage blocking and one the 3rd spring, and the positioning piston centre sets second row Pore, the gas leakage blocking include the stifled post of a pad and a projection at pad center, and the stifled post adaptation is stretched in second row pore, 3rd spring one end contact pad, the other end can relative contact plugs.

3. a kind of vapour-pressure type according to claim 2 can self-positioning and self-closing hinge, it is characterised in that：The centre mount is row Aeroembolism.

4. a kind of vapour-pressure type according to claim 3 can self-positioning and self-closing hinge, it is characterised in that：Also include one glass Body, the cup adjustably can be located in center along center；The check valve is located in cup, and the centre mount is fixed in cup.

5. a kind of vapour-pressure type according to claim 4 can self-positioning and self-closing hinge, it is characterised in that：Also include adjusting Seat, the cup adjustably can be located in center along center, and the adjustment seat connects cup through plug, can adjust cup phase Axial location to center.

6. a kind of vapour-pressure type according to claim 5 can self-positioning and self-closing hinge, it is characterised in that：The cup is provided with one Step, for limiting positioning piston along moving near the 3rd spring direction, the 3rd spring top is against the cup bottom of cup and pad Between.

7. a kind of vapour-pressure type according to claim 1 and 2 can self-positioning and self-closing hinge, it is characterised in that：Outside the solid bar, Sealing ring is socketed with, the sealing ring constitutes above-mentioned exhaust pition.

8. a kind of vapour-pressure type according to claim 1 and 2 can self-positioning and self-closing hinge, it is characterised in that：Also include energy The volution being located in center affixedly, the volution are located between swivel nut and exhaust pition, and the screw rod of the solid bar is bolted through spiral shell Ring is spirally connected swivel nut again.