CN206530184U - A kind of high sealing formula door vapour-pressure type is self-positioning and self-closing hinge - Google Patents

Abstract

The utility model discloses a kind of high sealing formula door vapour-pressure type is self-positioning and self-closing hinge, including hinge, solid seat, solid bar, swivel nut, plug and center.The hinge sets axle sleeve and blade, Gu seat sets axle sleeve.The center is provided with first row air admission hole；Center is socketed in the axle sleeve of the axle sleeve of hinge and solid seat；Provided with solid bar, centre mount, two springs and check valve between swivel nut and plug in center；The swivel nut and solid bar is provided with exhaust pition Gu the screw rod of bar is spirally connected, exhaust pition sealing is slipped in center；First spring top is against between solid bar and centre mount, and the retaining spring contact is between centre mount and check valve, and check valve sealing is located in center, and air-pressure chamber is constituted between exhaust pition and check valve.The exhaust pition is discharged towards check valve activity, air pressure room air through first row air admission hole, check valve, and exhaust pition cunning is behind first row air inlet hole site, and air pressure room air is discharged through check valve.Hinge can be self-positioning in the orientation angle of predetermined set, can be self-closing below the orientation angle for exiting predetermined set.

Description

A kind of high sealing formula door vapour-pressure type is self-positioning and self-closing hinge

Technical field

The utility model is related to that a kind of high sealing formula door vapour-pressure type is 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 upper 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 the surface of revolution is provided with the first spiral part within the drive cavity.The affixed lower axle of drive link The surface of revolution is provided with the second spiral part, drive link connection drive cavity, first spiral part and second outside set, the drive link Spiral part adaptation engagement, wherein：Hinge makes hinge be rotated relative to lower jaw in promotion, passes through the first spiral part and second Spiral part, which coordinates, can rise hinge；Pine oil, which is promoted, makes hinge decline under gravity, passes through the first spiral part With the cooperation of the second spiral part upper hinge can be made to automatically reset and return closure.The rising hinge device is directly matched somebody with somebody using axle sleeve up and down Close and realize switching, but can not divide self-closing and self-positioning.

Utility model content

The utility model provides that a kind of high sealing formula door vapour-pressure type is self-positioning and self-closing hinge, which overcomes background technology Deficiency present in middle rising hinge device.

The utility model solves one of technical scheme that its technical problem is used：

A kind of high sealing formula door vapour-pressure type is self-positioning and self-closing hinge, including hinge, solid seat, solid bar and swivel nut, the hinge If axle sleeve and the blade being connected to outside axle sleeve, the solid seat sets another axle sleeve, and the hinge can be rotated relative to seat admittedly and projection seat, the solid bar With screw rod；Also including plug and center, the spacing dimension position of the center and axle sleeve along axis and axial and circumferential, respectively Provided with the first row air admission hole run through inside and outside one；The center is socketed in the axle sleeve of hinge and in the axle sleeve of solid seat；The swivel nut Can rotationally it be located in center and an affixed axle sleeve, the plug is located in center and affixed another axle sleeve, the swivel nut and stifled Provided with solid bar, the first spring, centre mount, retaining spring and check valve between swivel nut and plug in head interval, the center；Should The swivel nut and solid bar is provided with exhaust pition Gu the screw rod of bar is spirally connected, exhaust pition sealing is slipped in center；First spring top It is against between solid bar and centre mount, the retaining spring contact is between centre mount and check valve, and check valve sealing is located at center In set, air-pressure chamber is constituted between the exhaust pition and check valve；Wherein：The exhaust pition is movable towards check valve, air pressure room air Discharged through first row air admission hole, check valve, exhaust pition cunning is behind first row air inlet hole site, the air warp in air-pressure chamber Check valve is discharged.

Among one embodiment：The check valve includes one slipping and seal the positioning piston of air-pressure chamber, a gas leakage is blocked and One the 3rd spring, the positioning piston centre sets second row stomata, and the gas leakage, which is blocked, includes a pad and a projection at pad center Stifled post, stifled post adaptation stretched into second row stomata, 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 Cup is connected through plug, so that axial location of the cup with respect to center can be adjusted.

Among one embodiment：The cup is provided with a step, is moved for limiting positioning piston along close to the 3rd spring direction, 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 loop coil that can be located at affixedly in center, the loop coil is located at swivel nut and exhaust is lived Between plug, screw rod of the solid bar is bolted through loop coil and is spirally connected again swivel nut.

What the utility model solved the technical scheme that its technical problem is used two is：

A kind of high sealing formula door vapour-pressure type is self-positioning and self-closing hinge, including hinge, solid seat, solid bar and swivel nut, the hinge If axle sleeve and the blade being connected to outside axle sleeve, the thin bar that the swivel nut has constitute blade, the swivel nut is located in solid seat, swivel nut tool Some thin bars can be rotated relative to bar admittedly, and the solid bar has screw rod；Also include plug, the axle sleeve constitutes center, and the center is arranged There is the first row air admission hole run through inside and outside one, the spacing dimension position of the cup and axle sleeve along axis and axial and circumferential is respectively set There is what is run through inside and outside one to discharge into stomata；The swivel nut is fixed in one end of center, and the plug is fixed in the other end of center It is interior, the swivel nut and plug interval；Provided with solid bar, the first spring, centre mount, retaining spring between swivel nut and plug in the center With positioning piston；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； First spring top is against between solid bar and centre mount, and the retaining spring contact is between centre mount and positioning piston, the positioning Piston seal is located in center, and the exhaust pition and positioning piston space constitute air-pressure chamber；Wherein：The exhaust pition is lived towards positioning Plug activity, discharge into stomata of the air pressure room air through first row air admission hole, cup and axle sleeve discharge, and exhaust pition cunning is through the One is discharged into behind stomata position, and the air in air-pressure chamber is discharged through cup and with the stomata that discharges into of axle sleeve.

Among one embodiment：The check valve includes one slipping and seal the positioning piston of air-pressure chamber, a gas leakage is blocked and One the 3rd spring, the positioning piston centre sets second row stomata, and the gas leakage, which is blocked, includes a pad and a projection at pad center Stifled post, stifled post adaptation stretched into second row stomata, 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 Cup is connected through plug, so that axial location of the cup with respect to center can be adjusted.

Among one embodiment：The cup is provided with a step, is moved for limiting positioning piston along close to the 3rd spring direction, 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 loop coil that can be located at affixedly in center, the loop coil is located at swivel nut and exhaust is lived Between plug, screw rod of the solid bar is bolted through loop coil and is spirally connected again swivel nut.

The technical program is compared with background technology, and it has the following advantages that：

Hinge can be rotated through opening relative to seat admittedly and projection seat axis, so that the exhaust pition energy that the solid bar in center has With respect to swivel nut downward spiral towards check valve activity, the gas in air-pressure chamber is discharged by first row air admission hole, check valve to Outer discharge, now the first spring-compressed energy storage；The exhaust pition that the solid bar of hinge has continues relative swivel nut axis downward spiral and turned Dynamic, the gas that exhaust pition is slipped in first row air admission hole, air-pressure chamber is discharged by check valve, so that the row in center Gas piston can correspond to check valve and retaining spring and gas leakage blocking and first row air admission hole, can be constituted air-pressure chamber, in this process In the elastic force of the first spring suffered by solid bar, self gravitation, atmospheric pressure (suction force) balance in air-pressure chamber so that in air-pressure chamber Exhaust pition can correspond to check valve and retaining spring so that the exhaust pition in air-pressure chamber can produce atmospheric pressure and (suction Power) balance each other so that hinge can be realized self-positioning during this.Hinge it is closed so that solid bar can relative swivel nut spiral to moving up It is dynamic, make exhaust pition is bottom-up in air-pressure chamber not skid off and (exit) before first row air admission hole so that the exhaust in air-pressure chamber Piston can correspond to check valve and retaining spring, the first bullet suffered by exhaust pition that the solid bar in air-pressure chamber has in the process Elastic force, self gravitation, atmospheric pressure and (suction force) balance of spring, it is relative so that positioning piston can be by the suction force of exhaust pition The atmospheric pressure of generation, and it is bottom-up twitched and it is bottom-up slide, to hinge stop at an intended orientation angle from Positioning, at the same time the compressed energy-storage elastic force of the retaining spring, which is produced, changes, and enables retaining spring one end contact centre mount, another Hold with energy contact positioning piston to the step that piston is supported to arrive in is positioned, at the same time the positioning piston is by the suction force of exhaust pition The atmospheric pressure of generation, and it is bottom-up twitched and bottom-up slip when, the at the same time compression of the 3rd spring Energy storage elastic force produces change, enables the cup bottom of the 3rd spring one end contact cup, and the other end is relative to be blocked with the gas leakage of energy contact To the surface perisporium for positioning piston, can completely cut off, prevent outside air from entering from second row stomata in the air-pressure chamber of center, with Enable exhaust pition self-positioning in air-pressure chamber, just can be motor-driven as long as exhaust pition is not skidded off and (exited) before first row air admission hole Property coordinate hinge self-positioning in the orientation angle of predetermined set in air-pressure chamber, exhaust pition is bottom-up sliding through (slipping into) the One discharges into before stomata, hinge can realize it is self-positioning, exhaust pition after skidding off and (exiting) first row air inlet hole site, heart it In so that center outside air from first row air admission hole enter air-pressure chamber in, at the same time the first spring energy storage release, To drive solid bar movable upwards, hinge can be realized self-closing.The axis of the first row air admission hole along center and axle sleeve and axially and Circumferential size spacing set location, correspondence hinge is self-positioning and pre- in the orientation angle starting point of a predetermined set orientation angle Surely below the orientation angle set can self-closing boundary's point, both hinge turn to the orientation angle starting point of a predetermined set orientation angle It is self-positioning, and below predetermined set orientation angle can self-closing boundary's point when so that exhaust pition can correspond to check valve and positioning Spring and gas leakage blocking and first row air admission hole, so that air-pressure chamber can be constituted, so that hinge can determining in predetermined set orientation angle Parallactic angle degree starting point is self-positioning, and can be self-closing below predetermined set orientation angle, and at the same time the air-pressure chamber can be corresponded to and coordinated Hinge with can in the orientation angle of predetermined set it is self-positioning so that hinge can in the orientation angle of predetermined set it is free from Positioning, and can be self-closing below predetermined angular, it is relative so that hinge can freely set orientation angle.

Adjustment seat can adjust axial location of the cup with respect to center, with can adjust the first spring compressed energy-storage elastic force and Initial tension of spring and air-pressure chamber cavity size, at least realize the self-closing dynamics size of regulation, self-closing speed speed.

Brief 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 one of structural representation of hinge of embodiment one.

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

Fig. 4 depicts the structural representation of the solid seat of embodiment one.

Fig. 5 depicts the assembling structure schematic diagram of the center of embodiment one.

Fig. 6 depicts the schematic perspective view of the center of embodiment one.

Fig. 7 depicts the structural representation of the center of embodiment one.

Fig. 8 depicts the schematic perspective view of the clutch shaft bearing of embodiment one.

Fig. 9 depicts the schematic perspective view of the swivel nut of embodiment one.

Figure 10 depicts the structural representation of the swivel nut of embodiment one.

Figure 11 depicts the schematic perspective view of the loop coil of embodiment one.

Figure 12 depicts the structural representation of the loop coil of embodiment one.

Figure 13 depicts the structural representation of the affixed screw of embodiment one.

Figure 14 depicts the schematic perspective view of the solid bar of embodiment one.

Figure 15 depicts the structural representation of the solid bar of embodiment one.

Figure 16 depicts the schematic perspective view of the blow-cook of embodiment one.

Figure 17 depicts the structural representation of the blow-cook of embodiment one.

Figure 18 depicts the structural representation of the positioning piston of embodiment one.

Figure 19 depicts the schematic perspective view of the positioning piston of embodiment one.

Figure 20 depicts the schematic perspective view that the gas leakage of embodiment one is blocked.

Figure 21 depicts the structural representation of the cup of embodiment one.

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

Figure 23 depicts the schematic perspective view of the plug of embodiment one.

Figure 24 depicts the structural representation of the plug of embodiment one.

Figure 25 depicts the structural representation of the adjustment seat of embodiment one.

Figure 26 depicts the schematic perspective view of the adjustment seat of embodiment one.

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

Figure 28 depicts the structural representation of the blade of embodiment two.

Figure 29 depicts the structural representation of the solid seat of embodiment two.

Figure 30 depicts the structural representation of the hinge of embodiment three.

Figure 31 depicts the structural representation of the solid seat of embodiment three.

Figure 32 depicts the structural representation of the loop coil of embodiment three.

Figure 33 depicts the structural representation of the blow-cook of embodiment three.

Figure 34 depicts the structural representation of the positioning piston of embodiment three.

Figure 35 depicts the structural representation of the cup of embodiment three.

Embodiment

Embodiment one

A kind of high sealing formula door vapour-pressure type is self-positioning and self-closing hinge, such as through 0 degree to 80 degree angle of opening when hinge energy Voluntarily exercise self-closing and 80 degree of predetermined angulars to 180 degree predetermined angular any predetermined angular self-positioning, can such as be adapted for mount to It is refrigerator-freezer, refrigerator, freezer, baking box, baking oven experimental facilities door, experiment chamber door, simulated environment experimental facilities door, plant equipment door, dry Dry appliance doors, soundproof door, special door, fresh-keeping warehouse door, tealeaves storehouse door, civil engineering storehouse door and any ship etc. any high sealing formula are put down Door hinge and any convex door hinge of high sealing formula.

The hinge, refer to Fig. 1 to Figure 26, including hinge 10, solid seat 20, solid bar 30, swivel nut 40, center 50, plug 60 and adjustment seat 70.The center 50 and axle sleeve 11 are respectively provided with inside and outside one and passed through along axis and axially with circumferential spacing dimension position The first row air admission hole 55 worn；The axle sleeve 11 sets the first row air admission hole 55 run through inside and outside one, is the first of sectional center set 50 Discharge into stomata 55 (certain axle sleeve 11 can also be without setting first row air admission hole 55), the first row air admission hole 55 is along center 50 be consistent with the axis of axle sleeve 11 with the spacing dimension set location of axial and circumferential.

The hinge 10 includes axle sleeve 11 and the blade 12 being fixed in outside axle sleeve 11, and the solid seat 20 includes a fixed plate 25 and one Vertical base plate 22 and one is fixed in the projection seat 23 on vertical base plate 22, and the end face of the vertical base plate 22 of the projection seat 23 is arranged with one Axle sleeve 21.The center 50 is connected to 21 in axle sleeve 11 and axle sleeve, and the axle sleeve 11 and axle sleeve 21 are arranged side by side so that hinge energy phase The axle sleeve 21 that solid seat and projection seat 23 have is rotated so that it is self-positioning and self-closing that hinge can constitute any high sealing formula door vapour-pressure type Jib door structure hinge, and the self-positioning and self-closing convex door hinge of any high sealing formula door vapour-pressure type.

The swivel nut 40 can be rotated and can not be slidably connected in center 50, and the axle sleeve 11 and swivel nut 40 of the hinge 10 are stretched The part gone out outside center 50 is affixed, and this is affixed for example：Another to arrange a change 41, the top of swivel nut 40 is convexly equipped with thin bar 42, should Thin bar 42 can turn through change 41, and the change 41 adaptation is located at the top of axle sleeve 11, arrange affixed screw 98 through axle sleeve 11 and It is affixed enter change 41 in, with affixed change 41 and axle sleeve 11, with the thin bar 42 of relatively affixed axle sleeve 11 and swivel nut 40, the change 41 The axially activity of swivel nut 40 can also be limited with the axle sleeve 11 of hinge, Gu the axle for rotating and sliding along axis with energy positioning thread insert/bar To with circumferential size spacing dimension position, be relative to ensure to coordinate the blade 12 of hinge 10 to make by oneself in the orientation angle of predetermined set Position.The plug 60 is connected in center 50, and the part that the axle sleeve 21 and plug 60 of the solid seat are stretched out outside center 50 is affixed, should It is affixed for example arrange affixed screw through axle sleeve 21 and it is affixed enter plug in.

The swivel nut 40 and plug 60 are spaced, 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 It is located in center 50 with covering 50 axis, the cup bottom opening of the cup.The centre mount 82 is blow-cook 82.It is best：In center 50 set the first flange 51, by the first flange 51 in center 50, it is impossible to be slidably connected and be fixed with loop coil 43, the loop coil 43 Under swivel nut and the screw rod 31 is bolted through loop coil 43 and is spirally connected again swivel nut 40, so that the loop coil 43 can limit and control the screw rod 31 rotate relative to swivel nut 40 and slide and mobile, produced spacing dimension coefficient, it is solid with can positioning thread insert/bar along axis rotation and The axial and circumferential size spaced position of slip, is the relative orientation angle for ensureing the cooperation blade 12 of hinge 10 in predetermined set, Needs orientation angle it is self-positioning.

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.The set location of first row air admission hole 55 is located in event trace of the exhaust pition along center 50, The first row air admission hole 55 is along center and the axial and circumferential size spacing set location of axle sleeve 11, and correspondence hinge is predetermined one Set 90 degree of orientation angle starting points of orientation angle self-positioning and the self-closing boundary's point of energy below 90 degree of orientation angles, both hinge turned The 90 degree of orientation angle starting points moved to a predetermined set orientation angle are self-positioning, and can be self-closing below 90 degree of orientation angles boundary When putting, relatively so that exhaust pition 33 can correspond to check valve 90 and retaining spring 83 and gas leakage blocks 92 and first row air admission hole, Can be constituted air-pressure chamber, at the same time the air-pressure chamber can correspond to and coordinate hinge to be made by oneself in the orientation angle of predetermined set Position, so that hinge can be free self-positioning in 90 degree of orientation angles to the 180 degree orientation angle of predetermined set, and it is pre- at 90 degree Surely setting can be self-closing below the starting point of orientation angle.

By the first row air admission hole 55, set along the axial and circumferential size spaced position of center 50 and axle sleeve 11, With by the affixed spiral shell of screw 98 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, can limit the axially activity, phase of swivel nut 40 Gu to the axial and circumferential size spaced position for rotating and sliding along axis with energy positioning thread insert/bar, and pass through the axle of hinge 10 The threaded of screw rod 31 and swivel nut 40 in set 11, with rotation slip that can be relative, and by the first flange 51 in center In 50, it is impossible to be slidably connected and be fixed with loop coil 43, the loop coil 43 is located under swivel nut and the screw rod 31 is bolted through loop coil 43 again Be spirally connected swivel nut 40, is slided and mobile so that the loop coil 43 can limit and control the screw rod 31 to be rotated relative to swivel nut 40, produced Spacing dimension coefficient, Gu the axial and circumferential size spaced position for rotating and sliding along axis with energy positioning thread insert/bar, so that in The relative swivel nut 40 of the energy of solid bar 30 in heart set 50, so that the exhaust pition 33 that solid bar 30 has produces the axial and circumferential chi of fixation Very little spacing downward spiral is outwards arranged towards the activity of check valve 90, the at the same time gas in air-pressure chamber by first row air admission hole 55 Go out, the second row stomata 911 of check valve 90 is discharged, exhaust pition 33 is slipped in first row air admission hole 55, air-pressure chamber downwards Gas discharged by the second row stomata 911 of check valve 90 so that the exhaust pition 33 in center can correspond to it is unidirectional Valve 90 and gas leakage block 92 and retaining spring 83 and first row air admission hole 55, can be constituted air-pressure chamber, make the exhaust in air-pressure chamber Piston can produce atmospheric pressure and (suction force) is balanced, and be that can guarantee that hinge blades 12 can the free blade of predetermined set hinge 10 relatively 12 orientation angle position.

50 contact of the first spring 81 is between solid bar 30 and centre mount 82 in the center, and the contact of retaining spring 83 exists Between centre mount 82 and check valve 90, the check valve 90 sealing is located in cup 56 and abutted against in cup 56, the exhaust pition 33 and check valve 90 and retaining spring 83 and first row air admission hole 55 can constitute air-pressure chamber.Wherein check valve 90 is exactly to position piston 91.Wherein：The exhaust pition 33 that the solid bar 30 has is towards the activity of check valve 90, and at the same time air pressure room air is discharged into through first Stomata 55 is discharged, and the second row stomata 911 through blow-cook, check valve is discharged, now the first spring-compressed energy storage；Close Page 10, which is continued on through, to be opened and can be rotated relative to the axis of axle sleeve 21 that seat and projection seat 23 have admittedly, so that the solid bar 30 in axle sleeve 11 has Exhaust pition 33 can relative swivel nut continue downward spiral and slide, at the same time exhaust pition 33 is slipping over first row air admission hole 55 Behind position, at the same time second row stomata 911 of the air in air-pressure chamber through blow-cook, check valve 90 is discharged, so that in Exhaust pition 33 in heart set can correspond to check valve 90 and gas leakage blocks 92 and retaining spring 83 and first row air admission hole 55, with energy Air-pressure chamber is constituted, in the process the elastic force of the first spring 81 admittedly suffered by bar, the exhaust pition in self gravitation, and air-pressure chamber 33 can coordinate positioning piston 91, retaining spring 83, so that the exhaust pition 33 in air-pressure chamber can produce atmospheric pressure and (suction force) Balance so that during this hinge 10 can realize it is self-positioning so that exhaust pition 33, which can coordinate, positions piston 91 and retaining spring 83, it is relative to match somebody with somebody the mobility in air-pressure chamber of exhaust pition 33 so that suction force and atmospheric pressure can be produced in air-pressure chamber Close the blade 12 of hinge 10 self-positioning in the orientation angle of predetermined set.The blade 12 of hinge 10 is closed through external force, is made in axle sleeve Screw rod and swivel nut threaded with can relative rotation so that exhaust pition 33 bottom-up without first row air admission hole It is relative so that positioning piston 91 is vented as long as exhaust pition 33 is bottom-up will to produce suction force and atmospheric pressure before 55 The suction force of piston 33 and the atmospheric pressure produced, and twitched by bottom-up, stopped to the blade 12 of hinge 10 predetermined The orientation angle of setting is self-positioning, and at the same time the compressed energy-storage elastic force of the retaining spring 83 produces change, and one end is can support to arrive in Centre mount 82, the other end positions the step 561 that piston 91 is supported to arrive in positioning piston 91 with energy contact, at the same time the positioning piston When 91 by the bottom-up twitch of exhaust pition, at the same time the compressed energy-storage elastic force of the 3rd spring 93 produces change, so that 3rd spring one end can support to arrive in the cup bottom of cup, and the other end is resetted with energy contact gas leakage blocking 92 and pad 921 and stifled post 922 To the surface perisporium of positioning piston 91 (check valve) 90, can completely cut off and prevent outside air from entering air-pressure chamber from second row stomata Interior, so that exhaust pition 33 can be positioned in air-pressure chamber, the relative blade that can realize hinge is self-positioning in predetermined angular.This is determined The energy storage elastic force and spring pre-tightening force intensity of position spring 83 are more powerful, the tensile strength of the positioning piston 91 of opposite side institute contact Relative more powerful, retaining spring other end contact centre mount that is bound to, so that exhaust pition 33 is not bottom-up sliding through (moving back Go out) before first row air admission hole 55, the atmospheric pressure and the intensity of suction force that are born in air-pressure chamber are relative can be more powerful, it is relative with Make relative more powerful, the row that is bound to of the blade 12 of hinge 10 positioning dynamics self-positioning in the orientation angle of a predetermined set Gas piston 91 it is bottom-up skid off and (exit) position of first row air admission hole 55 after so that center 50 is outer and axle sleeve outside gas Enter from first row air admission hole 55 in air-pressure chamber, it is relative to make to lose atmospheric pressure and suction force in air-pressure chamber, so that the blade of hinge Self-locating function is lost, at the same time the energy storage release of the first spring 81, to drive the activity upwards of solid bar 30, hinge can be realized certainly Close.In the center of hinge in the situation for being not provided with the first spring 81, hinge still can predetermined set orientation angle make by oneself Position.

Among one concrete structure：The check valve 90 includes the positioning of the wall of cup of a cup 56 that can slip and seal air-pressure chamber Piston 91, gas leakage blocking 92 and one the 3rd spring 93, the center of positioning piston 91 set second row stomata 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 stifled adaptation of post 922 is stretched into second row stomata 911, One end contact pad 921 of 3rd spring 93, 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 supported to arrive on step 561, close along being moved close to the direction of the 3rd spring 93 for limiting positioning piston 91.The list It is positioning piston 91 to valve 90.The end face of second row stomata 911 is recessed relative to the direction of pad 921 into taper hole from large to small, is Guarantee sealing property, preferably, the recessed annular mounting groove 913 of the outer surface of revolution of positioning piston, mounting groove is built with leakproof seal Circle 912, the leakproof seal circle 912 is also stretched out outside mounting groove 913, so that sealing ring 912 is slidingly sealed the cup for abutting against cup 56 Wall, to completely cut off and prevent outside air from entering from the wall of cup of cup 56 in the air-pressure chamber of center.When the down spiral shell of exhaust pition 33 When rotation is slided, the perisporium of the gas extrusion second row stomata 911 in air-pressure chamber so that the perisporium of second row stomata 911 and stifled post Gap is produced between 922, the gap discharge through the perisporium of second row stomata 911 and stifled post 922, by discharging gas extrusion pad and blocking up Post so that pad 921 and stifled post 922 shrink back so that produce gap between pad 921 and the positioning bottom wall of piston 91, gas is again Gap discharge between pad 921 and the positioning bottom wall of piston 91, in the energy storage elastic force and itself bullet of the 3rd spring 93 after discharge Under power effect, the 3rd spring one end is set to support to arrive in the cup bottom of cup, the other end is relative multiple with energy contact pad 921 and stifled post 922 Position is to the surface perisporium for positioning piston, to completely cut off and prevent external air from being penetrated into from second row stomata 911 in air-pressure chamber.This is unidirectional Valve 90 is positioning piston 91.

The solid bar 30 also includes a bulge loop 32 for being fixed in the end of screw rod 31, and the recessed annular mounting groove 321 of the bulge loop 32 should Leakproof seal circle is socketed with annular mounting groove 321, the leakproof seal circle 322 is also stretched out outside mounting groove 321, is slipped to seal Center, to completely cut off and prevent external air from penetrating into the air-pressure chamber in center, so that air-pressure chamber can be constituted, the leakproof seal circle Constitute above-mentioned exhaust pition 33.As needed, can also consolidating the slide of bar contact one, (such as direct contact is pivotally connected cunning by pivot Seat), 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, that can adjust First spring energy-storage elastic force and pretightning force and air-pressure chamber cavity size, realize the self-closing dynamics size of regulation, self-closing speed speed.Should Such as screw rod of adjustment seat 70, the screw rod is bolted through plug, and is linked together with the cup bottom of cup, and this links together, such as spiral shell Bar 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 admittedly Connect screw rod end and be resisted against the top surface at cup cup bottom.

As needed, the loop coil 43 being located at affixedly in center is may also include, the exhaust that the loop coil 43 is located at swivel nut is lived Between plug, loop coil is abutted against under swivel nut, and screw rod of the solid bar is bolted through loop coil and is spirally connected again swivel nut.(certainly, in the center Can also be without setting loop coil 43 or loop coil 43 can be set).

Among the present embodiment：The first flange 51 is set in center 50, by the first flange 51 in the center 50 and can not Rotate and be slidably connected and fixed spiro 43；A clutch shaft bearing 44 is set between the swivel nut 40 and center 50 (by center If third lip 53, can axially limit connection and be connected with clutch shaft bearing 44)；This is solid between the bottom face of bar 30 and the first spring 81 If second bearing 84, (it is of course also possible to without setting or second bearing 84 can be set)；The second flange is set in center 50 52, make plug relatively unrotatable by the second flange 52 and be slidably connected and be fixed in center.The blow-cook 82 is wrapped A pedestal 821 is included, the pedestal 821 sets one the 3rd steam vent 822, horn body 823 is installed with the pedestal 821, the pedestal 821 The rim of a cup periphery in cup is supportted, the horn body 823 is located in cup, and the 3rd steam vent 822 connects the endoporus of horn body 823, should It is recessed into taper from large to small towards horn body direction that 3rd steam vent 822 is located at pedestal one end；The pedestal 821 sealing is abutted against Center, preferably, the recessed annular mounting groove 811 of the side face of pedestal 821, built-in Lou sealing ring 824 of setting up defences of the mounting groove 811 should 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.322nd, 824,912,562 leakproof seal loop material matter are all flexible, can also be made up of elastomeric material.The cup The recessed annular mounting groove 560 of side face of the outer surface of revolution of the wall of cup of body 56, the mounting groove 560 is arranged a leakproof seal circle 562, and this is prevented Leakage sealing ring 562 is also stretched out outside mounting groove 560, to completely cut off and prevent outside air from entering in the air-pressure chamber of center.

Wherein：The blade 12 of hinge 10 is opened through external force and can rotated relative to the axle sleeve 21 that seat 20 and projection seat 23 have admittedly, with Make the downward spiral of exhaust pition 33 that solid bar 30 has movable towards check valve 90, the gas in air-pressure chamber passes through first row air admission hole 55 discharge, and are discharged by the second row stomata 911 of check valve, now the first spring-compressed energy storage；The blade of hinge 10 12 continue to rotate relative to the axle sleeve 21 that seat 20 and projection seat 23 have admittedly through opening, so that the exhaust that the solid bar 30 in axle sleeve 11 has Piston slide downward is slipping over first row air admission hole 55, the second row stomata that at the same time gas in air-pressure chamber passes through check valve 911 discharge so that the exhaust pition in center 50 can correspond to check valve and retaining spring and gas leakage blocks 92 and first Stomata is discharged into, so that air-pressure chamber can be constituted, the elastic force of the first spring admittedly suffered by bar, self gravitation, air-pressure chamber in the process Atmospheric pressure (suction force) is balanced, and exhaust pition in air-pressure chamber can correspond to positioning piston and retaining spring and gas leakage is blocked and the One discharges into stomata 55, so that the exhaust pition in air-pressure chamber produces atmospheric pressure and (suction force) is balanced so that hinge during this Realize self-positioning.By external force so that hinge is closed relative to the axle sleeve axis that has of projection seat of seat admittedly rotates, so that axle sleeve 11 Exhaust pition 33 that interior solid bar has is bottom-up in air-pressure chamber not to be skidded off and (exits) before first row air admission hole so that air pressure Indoor exhaust pition can correspond to positioning piston and retaining spring, the exhaust pition that the solid bar in air-pressure chamber has in the process Elastic force, self gravitation, atmospheric pressure and (suction force) balance of the first suffered spring, it is relative so that positioning piston is by exhaust pition Suction force and the atmospheric pressure that produces, and it is bottom-up twitched and it is bottom-up slide, stop at one to hinge blades Predetermined angular positioning after, at the same time the retaining spring compressed energy-storage elastic force produce change, one end with can support centre mount, separately One end extremely positions the step that piston (check valve) is supported to arrive in energy support positioning piston (check valve), at the same time the positioning piston quilt (suction force) of exhaust pition and the atmospheric pressure produced, and it is bottom-up twitched and bottom-up slip when, the 3rd The compressed energy-storage elastic force of spring produces change, so that the 3rd spring one end can support to arrive in the cup bottom of cup, the other end is relative with energy Pad 921 and stifled post 922 that contact gas leakage is blocked are reset to the surface perisporium of positioning piston (check valve), outer to completely cut off and prevent Face air enters in air-pressure chamber from second row stomata, so that exhaust pition can be self-positioning in air-pressure chamber, as long as exhaust pition does not have Skid off and (exit) before first row air admission hole, the cooperation hinge blades of mobility can just be made by oneself in air-pressure chamber in predetermined angular Position.The energy storage elastic force of retaining spring in the air-pressure chamber and the intensity of initial tension of spring is more powerful, and opposite side institute's contact is determined The contact tensile strength of position piston is bound to more powerful, the retaining spring other end contact centre mount, relative so that in air-pressure chamber Positioning piston by exhaust pition it is bottom-up twitch and it is bottom-up slide, the exhaust pition in air-pressure chamber in the process Suction force and the intensity of atmospheric pressure that produces is relative will be more powerful so that hinge blades are determined predetermined angular is self-positioning Position dynamics is bound to more powerful relatively.Hinge can be rotated through external force closure relative to seat admittedly, and exhaust pition is bottom-up not to be slided through row Before air admission hole, hinge can be realized self-positioning, and exhaust pition is skidded off and (exited) behind first row air inlet hole site, among heart so that The outside air of center enters in air-pressure chamber from first row air admission hole, relative to make to lose atmospheric pressure and suction force in air-pressure chamber, So that hinge loses self-locating function, the at the same time energy storage release of the first spring, so that solid bar can be driven movable upwards, so as to close Page can be realized self-closing.

Wherein：When the hinge blades need the orientation angle positioning in a predetermined set, in hinge blades through opening it Border is by the screw so that axle sleeve, change, thin bar are affixed together, and the change 41 can also limit the axially activity of swivel nut 40, with Gu the axial and circumferential size positions that energy positioning thread insert/bar is rotated and slided along axis, and the screw rod in the axle sleeve for passing through hinge With the threaded of swivel nut with can be relative rotation, and by first row air admission hole along the axial and circumferential in center and axle sleeve Spacing dimension position set, and check valve and retaining spring can be corresponded to by the exhaust pition in center, so that gas can be constituted Pressure chamber, so that the exhaust pition in air-pressure chamber produces atmospheric pressure and (suction force) is balanced, it is relative so that positioning piston is lived by exhaust The suction force of plug and the atmospheric pressure that produces and it is bottom-up twitched, it is relative to can guarantee that free predetermined set hinge blades Orientation angle so that hinge blades can a predetermined set orientation angle it is self-positioning.The compressed energy-storage elastic force of the retaining spring Intensity with initial tension of spring is more powerful, and the contact tensile strength of the positioning piston 91 of opposite side institute contact is bound to stronger Greatly, retaining spring other end contact centre mount, so that hinge blades are in the self-positioning positioning dynamics of a predetermined angular relative one Surely can be more powerful.The compressed energy-storage elastic force and spring pre-tightening force intensity of the retaining spring necessarily ensure to be greater than the pressure of the first spring Contracting energy storage elastic force and spring pre-tightening force intensity add the compressed energy-storage elastic force and spring pre-tightening force intensity of the 3rd spring, so that hinge leaf Piece can realize 80 degree of orientation angles in predetermined set to 180 degree orientation angle, any orientation angle it is self-positioning.

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 details, axle sleeve 11 is entered through when hinge blades are through opening, and by the affixed spiral shell of screw 98 Being bolted through change 41, interlocking fixes thin bar 42 again, so that change 41 can coordinate the rotation of hinge 10 and axle sleeve 11, that can limit The axially activity of swivel nut 40 processed, Gu relative to the axial and circumferential size positions for rotating and sliding along axis with energy positioning thread insert/bar, With the screw rod and the threaded of swivel nut in the axle sleeve by hinge so that screw rod can be rotated relative to swivel nut, so that consolidating in axle sleeve Bar can relative swivel nut when rotating can also relative axis rotation slip, and consolidated by the contact of the first spring 81 in the center Between the bottom face of bar 30 and centre mount 82, and by the contact of retaining spring 83 between centre mount 82 and check valve 90, and it is logical Cross the check valve 90 sealing to be located in cup 56 and abut against in cup 56, and the first flange 51 is set by center 50, pass through First flange 51 is in the center 50 and the fixed spiro 43 that can not be slidably connected, and by first row air admission hole 55 along center Axis and axial and circumferential size spacing set location, and a leakproof seal circle is arranged by the surface of revolution outside 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 sealing cup opening and center gap, and by setting the second flange 52 in center 50, pass through Second flange 52 prevents plug from being slidably connected and being fixed in center, axle sleeve 21 and plug that the projection seat 23 has relatively The 60 part connections stretched out outside center 50, and 92, other end energy are blocked by the 3rd spring one end contact pad and gas leakage Contact is at the cup bottom of cup, so that the axle sleeve that can have when hinge blades are through opening relative to the projection seat of seat admittedly is rotated, so that solid bar The exhaust pition having can swivel nut downward spiral be towards the activity of check valve 90 relatively, and at the same time the gas in air-pressure chamber passes through first Stomata is discharged into, the second row stomata of check valve is discharged, at the same time the first spring-compressed energy storage, hinge continues to consolidate seat relatively The axle sleeve axial rotation having with projection seat, so that exhaust pition is slipped over behind first row air inlet hole site, at the same time in air-pressure chamber Gas discharged by the second row stomata of check valve, so that air-pressure chamber can be constituted.Wherein：The center and axle sleeve are along axis The first row air admission hole run through inside and outside one is provided with the size spaced position of axial and circumferential so that exhaust pition can correspond to single To valve and gas leakage blocking and retaining spring and first row air admission hole, so that air-pressure chamber can be constituted；The first row air admission hole is along center With the axial and circumferential size spacing set location of axle sleeve, 90 degree orientation angles of the correspondence hinge in a predetermined set orientation angle Starting point is self-positioning, and the self-closing boundary's point of energy below 90 degree of orientation angles, and both hinge turned to a predetermined set orientation angle 90 degree of orientation angle starting points are self-positioning, and below 90 degree of orientation angles can self-closing boundary's point when so that exhaust pition can be corresponded to Check valve and retaining spring and gas leakage blocking and first row air admission hole, can be constituted air-pressure chamber, at the same time the air-pressure chamber can be right Should with coordinate hinge with can in the orientation angle of predetermined set it is self-positioning so that hinge can be at 90 degree to 180 of predetermined set Freely positioned in degree orientation angle, and can be self-closing below 90 degree of predetermined set orientation angles so that hinge can be freely pre- Orientation angle is set surely.

Embodiment two

It is with the difference of embodiment one：Please illustration Figure 27 to Figure 29, including hinge 10, solid seat 20, solid bar 30, spiral shell Set 40, center 50, plug 60 and adjustment seat 70.The vertical base plate 22 for the fixed plate 25 that the solid seat 20 has is convexly equipped with above-mentioned The end face of projection seat 23 is arranged with an axle sleeve 21, and the projection seat 23 accounts for the half of fixed plate 25, and the axle sleeve 11 of hinge 10 is located at projection seat 23 On.The spacing dimension position of the center 50 and axle sleeve 11 along axis and axial and circumferential, is respectively provided with run through inside and outside one One discharges into stomata 55；The axle sleeve 11 sets the first row air admission hole 55 run through inside and outside one, is the first row air inlet of sectional center set 50 Hole 55 (certainly, the axle sleeve 11 can also be without setting first row air admission hole 55), the first row air admission hole 55 is along the He of center 50 The axis of axle sleeve 11 is consistent with the size spacing set location of axial and circumferential.The hinge 10 includes axle sleeve 11 and is fixed in Blade 12 outside axle sleeve 11, the solid seat 20 is fixed on vertical base plate 22 including the vertical base plate 22 and one of a fixed plate 25 1 Projection seat 23, the end face of the vertical base plate 22 of the projection seat 23 is arranged with an axle sleeve 21.The center 50 is connected to axle sleeve 11 and axle sleeve Interior 21, the axle sleeve 11 and axle sleeve 21 are arranged side by side so that hinge 10 and blade 12 can consolidate the axle that seat 20 and projection seat 23 have relatively Set 21 is rotated so that hinge can constitute the self-positioning and self-closing jib door structure hinge of any high sealing formula door vapour-pressure type, and any The self-positioning and self-closing convex door hinge of high sealing formula door vapour-pressure type.

The swivel nut 40 can be rotated and can not be slidably connected in center 50, and the axle sleeve 11 and swivel nut 40 of the hinge 10 are stretched The part gone out outside center 50 is affixed, and this is affixed for example：Another to arrange a change 41, the top of swivel nut 40 is convexly equipped with thin bar 42, should Thin bar 42 can turn through change 41, and the change 41 adaptation is located at the top of axle sleeve 11, arrange affixed screw 98 through axle sleeve 11 and It is affixed enter change 41 in, with affixed change 41 and axle sleeve 11, with the thin bar 42 of relatively affixed axle sleeve 11 and swivel nut 40, the change 41 The axially activity of swivel nut 40 can also be limited with axle sleeve 11, Gu rotated and the axial direction slided and week along axis with energy positioning thread insert/bar To size spaced position, be it is relative ensure to coordinate the blade 12 of hinge 10 can predetermined set orientation angle, needs positioning Angle is positioned.The plug 60 prevents plug to be slidably connected and be fixed in center 50 from relative by the second flange 52, should Gu the part that the axle sleeve 21 and plug 60 of seat are stretched out outside center 50 is affixed, this is affixed for example to arrange affixed screw through axle sleeve 21 And it is affixed enter plug 60 in.

The swivel nut 40 and plug 60 are spaced, 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 It is located in center 50 with covering 50 axis, the cup bottom opening of the cup.The centre mount 82 is blow-cook 82.It is best：In center 50 set the first flange 51, by the first flange 51 in center 50, it is impossible to be slidably connected and be fixed with loop coil 43, (the center Can also be without setting loop coil 43 in set) loop coil 43 is located under swivel nut and the screw rod 31 is bolted through loop coil 43 and is spirally connected again swivel nut 40, slided and mobile, produced spacing dimension so that the loop coil 43 can limit and control the screw rod 31 to be rotated relative to swivel nut 40 Coefficient, it is solid with can positioning thread insert/bar along axis rotary shaft and slip to circumferential size spaced position, it is relative to ensure to coordinate conjunction Page 10 blades 12 can predetermined set orientation angle it is self-positioning.The shape of the first spring 81 is being not provided with the center of hinge In condition, hinge still can predetermined set orientation angle it is self-positioning.

Wherein：By the first row air admission hole 55, along between the axis and axial and circumferential size of center 50 and axle sleeve 11 Set away from position, and enter through axle sleeve 11 be bolted through the interlocking fixation thin bar 42 again of change 41 by the affixed spiral shell of screw 98, Make axle sleeve, change, thin bar affixed together, so that change 41 can coordinate the rotation of hinge 10 and axle sleeve 11, can limit swivel nut 40 Axially activity, it is solid it is relative with can positioning thread insert/bar rotated along axis and slip axial and circumferential size spaced position, and lead to The screw rod 31 and the threaded of swivel nut 40 crossed in the axle sleeve 11 of hinge 10, are slided with the relative rotation of energy, and convex by first Edge 51 is in center 50, it is impossible to is slidably connected and is fixed with loop coil 43, and the loop coil 43 is located under swivel nut and the screw rod 31 is spirally connected It is spirally connected again swivel nut 40 through loop coil 43, slides and move so that the loop coil 43 can limit and control the screw rod 31 to be rotated relative to swivel nut 40 Dynamic, produced spacing dimension coefficient, Gu the axial and circumferential size spacing for rotating and sliding along axis with energy positioning thread insert/bar Position, so that the exhaust pition 33 that the solid bar 30 in center 50 has can be rotated relative to swivel nut 40, so that the row that solid bar has Gas piston 33 produces the axial and circumferential size spacing downward spiral of fixation towards the activity of check valve 90, at the same time in air-pressure chamber Gas is discharged by first row air admission hole 55, and the second row stomata 911 of check valve 90 is discharged, in the axle sleeve of hinge Slided Gu the exhaust pition that bar has continues relative swivel nut axis downward spiral, the position of first row air admission hole 55 is being slipped over, with this The gas in air-pressure chamber is discharged by the second row stomata 911 of check valve 90 simultaneously, so that the exhaust pition in center 33 can correspond to check valve 90 and retaining spring 83 and gas leakage blocking 92 and first row air admission hole 55, can be constituted air-pressure chamber, make gas Exhaust pition in pressure chamber can produce atmospheric pressure and (suction force) is balanced, and be that can guarantee that hinge blades 12 can freely make a reservation for set relatively Put the orientation angle position of the blade 12 of hinge 10.

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.The first row air admission hole 55 along center and the axial and circumferential size spacing set location of axle sleeve, Positioned at exhaust pition along along the event trace of center, the first row air admission hole 55 is along center and the axial and circumferential chi of axle sleeve Very little spacing set location, correspondence hinge is self-positioning in 90 degree of orientation angle starting points of a predetermined set orientation angle, and at 90 degree Below orientation angle can self-closing boundary's point, both hinge turn to 90 degree of orientation angle starting points of a predetermined set orientation angle and make by oneself Position and below 90 degree orientation angles can self-closing boundary's point when so that exhaust pition can correspond to check valve 90 and gas leakage 92 Hes of blocking The first row air admission hole 55 of retaining spring 83, can be constituted air-pressure chamber, at the same time the air-pressure chamber can correspond to and coordinate hinge with energy Positioned in the orientation angle of predetermined set, so that hinge can be in 90 the degree of predetermined set to 180 degree orientation angle freely Positioning, and can be self-closing below 90 degree of orientation angles so that hinge can free predetermined set orientation angle.

Among one concrete structure：The check valve 90 includes the positioning of the wall of cup of a cup 56 that can slip and seal air-pressure chamber Piston 91, gas leakage blocking 92 and one the 3rd spring 93, the center of positioning piston 91 set second row stomata 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 stifled adaptation of post 922 is stretched into second row stomata 911, One end contact pad 921 of 3rd spring 93, 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 supported to arrive on step 561, close along being moved close to the direction of the 3rd spring 93 for limiting positioning piston 91.The list It is positioning piston 91 to valve 90.The end face of second row stomata 911 is recessed relative to the direction of pad 921 into taper hole from large to small, is Guarantee sealing property, preferably, the recessed annular mounting groove 913 of the outer surface of revolution of positioning piston, mounting groove is built with leakproof seal Circle 912, the leakproof seal circle 912 is also stretched out outside mounting groove 913, so that sealing ring 912 is slidingly sealed the cup for abutting against cup 56 Wall.When exhaust pition 33 down helical rotation, the perisporium of the gas extrusion second row stomata 911 in air-pressure chamber so that the Gap is produced between the perisporium of two steam vent 911 and stifled post 922, the gap discharge through the perisporium of second row stomata 911 and stifled post 922 is led to Cross discharge gas extrusion pad and stifled post so that pad 921 and stifled post 922 shrink back so that pad 921 and positioning piston 91 bottom Gap is produced between wall, gap of the gas again between pad 921 and the positioning bottom wall of piston 91 is discharged, in the 3rd spring after discharge Under 93 energy storage elastic force and its own resilient effect, so that the 3rd spring one end can support to arrive in the cup bottom of cup, the other end is can push up The surface perisporium of positioning piston is reset to pad 921 and stifled post 922, to completely cut off and prevent external air from being oozed from second row stomata Enter in air-pressure chamber.The check valve is positioning piston.

The solid bar 30 also includes a bulge loop 32 for being fixed in the end of screw rod 31, and the recessed annular mounting groove 321 of the bulge loop 32 should Leakproof seal circle is socketed with annular mounting groove 321, the leakproof seal circle 322 is also stretched out outside mounting groove 321, is slipped to seal Center 50, the leakproof seal circle constitutes above-mentioned exhaust pition 33.As needed, the slide of bar contact one can also be consolidated (as directly Contact is pivotally connected slide by pivot), the slide is set to exhaust pition.

The adjustment seat 70 connects cup through plug, can adjust the axial location of cup center relatively, that can correspond to The first spring energy-storage elastic force and pretightning force and air-pressure chamber cavity size are adjusted, the self-closing dynamics size of regulation is realized, self-closing speed is fast Slowly.The adjustment seat 70 such as screw rod, the screw rod is bolted through plug, and is linked together with the cup bottom of cup, and this links together, As screw rod sets step surface, the bottom surface at step surface contact cup cup bottom, screw rod can turn through the opening at glass bottom, another to arrange nut spiral shell Connect affixed screw rod end and be resisted against the top surface at cup cup bottom.

Among the present embodiment：The first flange 51 is set in center 50, by the first flange 51 in the center 50 and can not It is slidably connected and affixed loop coil 43；A clutch shaft bearing 44 is set between the swivel nut 40 and center 50 (by being arranged the 3rd at center Flange 53, can axially limit connection and be connected with clutch shaft bearing 44)；This is consolidated sets second between the bottom face of bar 30 and the first spring 81 Bearing 84, (it is of course also possible to without setting second bearing 84)；The second flange 52 is set in center 50, passes through the second flange 52 Prevent plug from being slidably connected and being fixed in center relatively.The blow-cook 82 includes a pedestal 821, and the pedestal 821 is set Horn body 823 is installed with one the 3rd steam vent 822, the pedestal 821, the pedestal 821 is supported on the rim of a cup periphery of cup, the loudspeaker Body 823 is located in cup, and the 3rd steam vent 822 connects the endoporus of horn body 823, and the 3rd steam vent is as being by pedestal one end It is recessed into taper from large to small towards horn body direction；Center is abutted against in the pedestal 821 sealing, and preferably, the side face of pedestal 821 is recessed If the mounting groove 811 of annular, built-in Lou sealing ring 824 of setting up defences of the mounting groove 811, sealing ring 824 also stretches out mounting groove 811 Outside, it is abutted against center 50 to seal.The centre mount 82 and cup 56 are connected by affixed screw 98.322、824、912、 562 leakproof seal loop material matter are all flexible, can also be made up of elastomeric material.The side face of the outer surface of revolution of the wall of cup of cup 56 is recessed If the mounting groove 560 of annular, the mounting groove 560 is arranged a leakproof seal circle 562, the leakproof seal circle 562 also stretches out mounting groove Outside 560, to completely cut off and prevent outside air from entering in the air-pressure chamber of center.

Hinge can be rotated through opening relative to seat 20 admittedly and the axis of axle sleeve 21 of projection seat 23, so that the solid bar energy phase in center To swivel nut downward spiral towards the activity of check valve 90, at the same time the gas in air-pressure chamber is discharged by first row air admission hole, The second row stomata 911 of check valve is discharged, now the first spring-compressed energy storage；The solid bar of hinge continues relative swivel nut axis spiral shell Rotation rotates down slip, so that the exhaust pition that solid bar has is slipping over first row air inlet hole site, at the same time in air-pressure chamber Gas discharged by the second row stomata 911 of check valve so that the exhaust pition in center can correspond to check valve and Retaining spring and gas leakage block 92 and first row air admission hole 55, can be constituted air-pressure chamber, in the process admittedly suffered by bar first The elastic force of spring, self gravitation, atmospheric pressure (suction force) balance in air-pressure chamber so that the exhaust pition in air-pressure chamber can be corresponded to Check valve and gas leakage block 92 and retaining spring, so that the exhaust pition in air-pressure chamber can produce atmospheric pressure and (suction force) is put down Weighing apparatus so that hinge can be realized self-positioning during this.Hinge is closed to move up so as to consolidate the relative swivel nut spiral of bar energy, make row Gas piston is bottom-up in air-pressure chamber not to be skidded off and (exits) before first row air admission hole so that the exhaust pition in air-pressure chamber can be right Check valve and retaining spring and gas leakage blocking and first row air admission hole are answered, the exhaust that the solid bar in air-pressure chamber has in the process Elastic force, self gravitation, atmospheric pressure and (suction force) balance of the first spring suffered by piston, it is relative positioning piston is vented (suction force) of piston and the atmospheric pressure produced, and it is bottom-up twitched and it is bottom-up slide, stopped to hinge One intended orientation angle is self-positioning, and at the same time the compressed energy-storage elastic force of the retaining spring produces change, during one end is that can support to arrive in Heart seat, the step that the other end is supported to arrive in energy contact positioning piston to positioning piston, with the period positioning piston by exhaust pition Suction force and the atmospheric pressure produced, and it is bottom-up twitched and bottom-up slip when, the compression of the 3rd spring Energy storage elastic force produces change, and one end is with the cup bottom of energy support cup, the relative He of pad 921 blocked with the gas leakage of energy contact of the other end Stifled post 922 is reset to the surface perisporium of positioning piston, is entered with that can completely cut off outside air from second row stomata in air-pressure chamber, so that Exhaust pition can be self-positioning in air-pressure chamber, as long as exhaust pition is not skidded off and (exited) before first row air admission hole, just can mobility Coordinate hinge self-positioning in the orientation angle of predetermined set in air-pressure chamber.The energy storage elastic force of retaining spring in the air-pressure chamber and Pretightning force is stronger, and the contact tensile strength of the positioning piston of opposite side institute contact is bound to more powerful, and the retaining spring is another Hold contact centre mount, it is relative so that positioning piston in air-pressure chamber is twitched and bottom-up cunning by exhaust pition is bottom-up It is dynamic, in the process the suction force of the exhaust pition in air-pressure chamber and the intensity of atmospheric pressure that produces is relative will be more powerful, So that hinge blades are more powerful with respect to being bound in the self-positioning dynamics of predetermined angular.Exhaust pition is bottom-up without first row Before air admission hole, hinge can be realized self-positioning, and exhaust pition is skidded off and (exited) behind first row air inlet hole site, among heart so that The outside air of center enters in air-pressure chamber from first row air admission hole, relative to make to lose atmospheric pressure and suction force in air-pressure chamber, So that the blade 12 of hinge 10 loses self-locating function, and the at the same time energy storage release of the first spring, to drive solid bar movable upwards, Hinge can be realized self-closing.

The adjustment seat can adjust axial location of the cup with respect to center, can adjust the compressed energy-storage elastic force of the first spring With initial tension of spring and air-pressure chamber cavity size, the self-closing dynamics size of regulation, self-closing speed speed are at least realized.

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 details, is to enter to exist through axle sleeve 11 by the affixed spiral shell of screw 98 when hinge blades are through opening Being bolted through change 41, interlocking fixes thin bar 42 again, so that change 41 can coordinate the rotation of hinge 10 and axle sleeve 11, that can limit The axially activity of swivel nut 40, Gu relative to the axial and circumferential size positions for rotating and sliding along axis with energy positioning thread insert/bar, and First flange 51 is set by center 50, by the first flange 51 in the center 50 and the fixed spiro that can not be slidably connected The threaded of screw rod and swivel nut in 43, and the axle sleeve for passing through hinge is so that screw rod can be rotated relative to swivel nut, so that in axle sleeve Solid bar can relative swivel nut when rotating can also relative axis rotation slip, and pass through the contact of the first spring 81 in the center Between the solid bottom face of bar 30 and centre mount 82, and by the contact of retaining spring 83 centre mount 82 and positioning piston 91 it Between, and by the positioning piston 91 sealing be located in cup 56 and abut against in cup 56, and pass through the edge of first row air admission hole 55 The axis and axial and circumferential size spacing set location of center, and by the surface of revolution outside the cup wall of cup to be arranged a leakproof close Seal, and by being socketed with sealing ring outside the solid bar, the sealing ring constitutes above-mentioned exhaust pition, and solid by the centre mount 82 The gap of cup opening and center is connected at the opening of cup 51 and seals, and by setting the second flange 52 in center 50, Plug is prevented from being slidably connected and being fixed in center, the He of axle sleeve 21 that the projection seat 23 has relatively by the second flange 52 The part connection that plug 60 is stretched out outside center 50, and by the 3rd spring one end contact pad and gas leakage blocking 92, it is another End energy contact is at the cup bottom of cup, so as to can be rotated when hinge blades are through opening relative to the axle sleeve of projection seat, so that what solid bar had Exhaust pition can swivel nut downward spiral be towards the activity of check valve 90 relatively, and at the same time the gas in air-pressure chamber passes through first row air inlet Hole, the second row stomata of check valve is discharged, at the same time the first spring-compressed energy storage, and hinge continues the axle sleeve of relative projection seat Axial rotation, so that the exhaust pition that solid bar has is slipped over behind first row air inlet hole site, the at the same time gas in air-pressure chamber Discharged by the second row stomata of check valve, so that air-pressure chamber can be constituted.Wherein：The center and axle sleeve are along axis and axial direction The first row air admission hole run through inside and outside one is provided with circumferential size spaced position so that exhaust pition can correspond to check valve and Gas leakage blocking and retaining spring and first row air admission hole, so that air-pressure chamber can be constituted；The first row air admission hole is along center and axle sleeve Axis and axial and circumferential size spacing set location, correspondence hinge a predetermined set orientation angle 90 degree of orientation angles Starting point is self-positioning, and the self-closing boundary's point of energy below 90 degree of orientation angles, and both hinge turned to a predetermined set orientation angle 90 degree of orientation angle starting points it is self-positioning and below 90 degree of orientation angles can self-closing boundary's point when so that exhaust pition can correspond to it is single To valve and positioning piston and gas leakage blocking and first row air admission hole, can be constituted air-pressure chamber, at the same time the air-pressure chamber can be corresponded to With coordinate hinge with can predetermined set orientation angle it is self-positioning so that hinge can be determined at 90 the degree of predetermined set to 180 degree It is free self-positioning in parallactic angle degree, and can be self-closing below 90 degree of orientation angles so that hinge can free predetermined set orientation angle Degree.

Embodiment three

It is with the difference of embodiment one：Please illustration Figure 30, Figure 35, the axle sleeve 11 of the hinge 10 is located at solid seat 20 Interior, the thin bar 42 of the swivel nut 40 can be rotated relative to bar 30 admittedly and solid seat 20；The thin bar 42 constitutes blade 12, because the thin bar 42 passes through Affixed screw 98 is fixed in the door leaf of high sealing formula door.The axle sleeve 11 constitutes center 50, and the center 50 is provided with inside and outside one and passed through The first row air admission hole 55 worn, the spacing dimension position of the cup 56 and axle sleeve 11 along axis and axial and circumferential, is respectively provided with one It is inside and outside run through discharge into stomata 95, (cup 56 and axle sleeve 11 can also discharge into stomata 95 without setting)；The positioning piston 91 Change and set no second row stomata 911, relative is that (the positioning piston 91 can also also be set certainly without setting gas leakage to block 92 There are second row stomata 911, gas leakage to block 92)；This discharges into the set location of stomata 95, positioned at positioning piston 91 (check valve) along cup In the up and down track of axial and circumferential of 56 wall of cups, this is discharged between axial and circumferential of the stomata 95 along center 50 and cup 56 Carpenters square cun set location is consistent, (certainly, the cup 56 and axle sleeve 11 can also discharge into stomata 95 without setting)；This first Axis and axial and circumferential size spacing set location of the stomata 55 along center are discharged into, correspondence hinge is positioned in a predetermined set 90 degree of orientation angle starting points of angle are self-positioning, and the self-closing boundary's point of energy below 90 degree of orientation angles, and both hinge turned to one 90 degree of orientation angle starting points of predetermined set orientation angle are self-positioning, and below 90 degree of orientation angles can self-closing boundary's point when, So that exhaust pition 33 can correspond to positioning piston 91 and retaining spring 83 and discharge into stomata 95 and first row air admission hole 55, with energy structure Into air-pressure chamber, at the same time the air-pressure chamber can correspond to and coordinate hinge with can in the orientation angle of predetermined set it is self-positioning, with Enable hinge free self-positioning in 90 degree of predetermined set to 180 degree orientation angle, and the energy below 90 degree of orientation angles It is self-closing so that hinge can free predetermined set orientation angle.The plug is fixed in center (axle sleeve) by affixed screw 98 In the other end, the swivel nut is fixed in the other end of center (axle sleeve), the swivel nut and plug interval；Swivel nut in the center Provided with solid bar, the first spring, centre mount, retaining spring, positioning piston (check valve) and the 3rd spring between plug；The solid bar Screw rod is spirally connected swivel nut and solid bar is provided with exhaust pition, and exhaust pition sealing is slipped in center；First spring top is against solid Between bar and centre mount, the retaining spring contact is between centre mount and positioning piston (check valve), and the positioning piston is (unidirectional Valve) sealing is located in center, and the exhaust pition and position and constitute air-pressure chamber between piston (check valve)；(the positioning piston is exactly Check valve)；Wherein：The exhaust pition is towards positioning piston (check valve) activity, and air pressure room air is outside through first row air admission hole Discharge, cup, the stomata that discharges into of center are discharged, at the same time exhaust pition after first row air inlet hole site is slipped over, At the same time discharge into stomata of the air in air-pressure chamber through cup, center is discharged, can form air-pressure chamber.The loop coil 43 Entered by the affixed spiral shell of screw 98 through center in the affixed loop coil 43 of interlocking, so that loop coil 43, which can not be slidably connected, is fixed on axle Cover in 11 (centers), (certainly, can also be without setting loop coil 43 in the center), the loop coil 43 is located under swivel nut and the spiral shell Bar is bolted through loop coil 43 and is spirally connected again swivel nut, slides and moves so that the loop coil 43 can limit and control the screw rod to be rotated relative to swivel nut Dynamic, produced spacing dimension coefficient, Gu the axial and circumferential size position for rotating and sliding along axis with energy positioning thread insert/bar Put, be that the relative blade for ensureing to coordinate hinge can free predetermined set orientation angle；The swivel nut is fixed in one end of center, The plug 60 is fixed in the other end of center by affixed screw, the swivel nut and plug interval.And second bearing can be omitted.

By the first row air admission hole 55, set along the axial and circumferential size spaced position of center 50, and by solid Screw 98 is connect so that thin bar 42 is fixed in the door leaf of high sealing formula door, it is solid with can positioning thread insert/bar rotated along axis and slip The threaded of screw rod 31 and swivel nut 40 in axial and circumferential size spaced position, and the axle sleeve 11 for passing through hinge 10 is with energy phase To rotation, and entered by the affixed spiral shell of screw 98 through center 50 and enter interlocking fixed spiro 43 in spiral shell, so that loop coil 43 can not It is slidably connected and is fixed in center 50, the loop coil 43 is located under swivel nut and the screw rod 31 is bolted through loop coil 43 and is spirally connected again spiral shell Set 40, is slided and mobile, produced distance ruler so that the loop coil 43 can limit and control the screw rod 31 to be rotated relative to swivel nut 40 Very little coefficient, Gu the axial and circumferential size spaced position for rotating and sliding along axis with energy positioning thread insert/bar, so that center 50 Interior solid bar 30 can relative swivel nut 40, with can produce fixation the rotation of axial and circumferential size spacing and slip downwardly toward positioning The activity of piston 91, at the same time the gas in air-pressure chamber discharged and cup 56 and center by first row air admission hole 55 Discharge into stomata to discharge, exhaust pition 33 is slipping over first row air admission hole 55, and at the same time the gas in air-pressure chamber passes through cup Body and the stomata that discharges into of center are discharged, so that the exhaust pition 33 in center can correspond to positioning piston and retaining spring 83 and first row air admission hole 55 so that air-pressure chamber can be produced, enable that the exhaust pition in air-pressure chamber produces atmospheric pressure and (suction force) is put down Weighing apparatus, is that can guarantee that hinge blades 12 can be freely self-positioning in the orientation angle position of predetermined set relatively.

Wherein：Hinge can be rotated through opening relative to seat admittedly, so that the solid bar in center can relative swivel nut downward spiral court The activity of piston 91 is positioned, at the same time the gas in air-pressure chamber is discharged by first row air admission hole, cup, the row of center Air admission hole is discharged, now the first spring-compressed energy storage；The solid bar of hinge continues relative swivel nut downward spiral and slided, exhaust pition First row air admission hole is being slipped over, at the same time the gas in air-pressure chamber is discharged by the stomata that discharges into of cup, center, with The exhaust pition in center is corresponded to and position piston (check valve) and first row air admission hole 55, so that air-pressure chamber can be constituted, It is (single that the exhaust pition consolidated during this in elastic force, self gravitation, air-pressure chamber of the first spring suffered by bar can correspond to positioning piston To valve) so that the exhaust pition in air-pressure chamber can produce atmospheric pressure and (suction force) balances each other so that hinge can be real during this It is existing self-positioning.Hinge is closed so that solid bar energy swivel nut spiral upward sliding relatively, exhaust pition is bottom-up in air-pressure chamber Do not skid off and (exit) before first row air admission hole, the exhaust pition in air-pressure chamber is corresponded to and position piston (check valve) and positioning bullet Spring, elastic force, self gravitation, the atmospheric pressure of the first spring suffered by exhaust pition that the solid bar in air-pressure chamber has in the process (suction force) balances each other, relative to make the atmospheric pressure that positioning piston (check valve) be produced by (suction force) of exhaust pition Power, and it is bottom-up twitched and along the wall of cup in cup it is bottom-up slide, stop at a predetermined angular to hinge and make by oneself Behind position, or it is bottom-up slide into when discharging into stomata position so that outside air is discharged into from axle sleeve (center), cup Stomata enter air-pressure chamber in, to hinge stop at a predetermined angular it is self-positioning after, with the compressed energy-storage bullet of the period retaining spring Power produces change, so that retaining spring one end energy contact centre mount, the other end is with energy support positioning piston, with the bullet of period the 3rd The compressed energy-storage elastic force of spring produces change, enables the 3rd spring one end contact cup cup bottom, and the other end positions piston with energy support, So that the 3rd spring and retaining spring cooperate, relatively with energy mutually contact positioning piston (check valve) to reset, or so that 3rd spring and retaining spring cooperate, relative mutually contact can position piston (check valve) to resetting, outer that can completely cut off Face air discharges into stomata from cup again and entered in air-pressure chamber, with the period positioning piston (check valve) by the suction force of exhaust pition And atmospheric pressure balance is produced, so that the exhaust pition in center can correspond to positioning piston (check valve), so that exhaust pition Can be self-positioning in air-pressure chamber, as long as exhaust pition is not skidded off and (exited) before first row air admission hole, just energy mobility is in air-pressure chamber Interior cooperation hinge is self-positioning in predetermined angular.The energy storage elastic force and spring pre-tightening force intensity of retaining spring in the air-pressure chamber are stronger Greatly, the contact tensile strength of the positioning piston of opposite side institute contact be bound to it is more powerful, in the retaining spring other end contact Heart seat, it is relative so that positioning piston in air-pressure chamber by exhaust pition it is bottom-up twitch and it is bottom-up slide, mistake herein The suction force of exhaust pition in journey in air-pressure chamber and the intensity of atmospheric pressure that produces is relative will be more powerful so that hinge leaf Piece is bound to more powerful relatively in the self-positioning positioning dynamics of a predetermined angular.Exhaust pition is bottom-up sliding through (exiting) the One discharges into before stomata, hinge can realize it is self-positioning, exhaust pition after skidding off and (exiting) first row air inlet hole site, heart it In so that the outside air of center enters in air-pressure chamber from first row air admission hole, it is relative to make to lose atmospheric pressure in air-pressure chamber and take out Suction, so that hinge loses self-locating function, at the same time the energy storage release of the first spring, to drive solid bar movable upwards, is closed Page can be realized self-closing.

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 details, when hinge blades are through opening, be by affixed screw 98 so that the thin bar 42 is fixed in The door leaf of high sealing formula door, it is relative to limit the axially activity of swivel nut 40, Gu rotate and slide along axis with energy positioning thread insert/bar Axial and circumferential size positions, and screw rod and the threaded of swivel nut in the axle sleeve for passing through hinge are so that screw rod can relative spiral shell Set is rotated so that solid bar in axle sleeve can relative swivel nut when rotating can also relative axis rotation slip, and pass through affixed screw 98 spiral shells enter through axle sleeve 11 in interlocking loop coil 43, are fixed on so that loop coil 43 can not be slidably connected in center 50, and pass through The contact of the first spring 81 in the center is between the solid bottom face of bar 30 and centre mount 82, and passes through the contact of retaining spring 83 It is located in cup 56 and abuts against in cup 56 between centre mount 82 and check valve 90, and by the check valve 90 sealing, and Axis and axial and circumferential size spacing set location by first row air admission hole 55 along center, and pass through the cup wall of cup The outer surface of revolution is arranged a leakproof seal circle, and is located at and abuts against in cup 56 by positioning piston seal, and passes through the solid bar Sealing ring is socketed with outside, the sealing ring constitutes above-mentioned exhaust pition, and is fixed in by the centre mount 82 opening of cup 51 Place and the gap of sealing cup opening and center, and entered by the plug 60 by the affixed spiral shell of screw 98 and exist through center 50 Interlocking plug 60, so that plug 60 is fixed in center 50, and positions piston, the other end by the 3rd spring one end contact Energy contact is at the cup bottom of cup, so as to can be rotated when hinge is through opening relative to the axle sleeve of seat admittedly, so that the exhaust work that solid bar has Plug can relative swivel nut rotate movable downwardly toward positioning piston 91, at the same time the gas in air-pressure chamber is by first row air admission hole, Cup and the stomata that discharges into of center are discharged, at the same time the first spring-compressed energy storage, and hinge continues to consolidate the axle of seat relatively Cover axial rotation to slide, exhaust pition is slipped over behind first row air inlet hole site, and at the same time the gas in air-pressure chamber passes through cup Discharged with the stomata that discharges into of center, so that air-pressure chamber can be constituted.Wherein：The center and axle sleeve are along axis and axially and week To size spaced position be provided with the first row air admission hole that runs through inside and outside one so that exhaust pition can correspond to positioning piston and fixed Position and discharges into stomata 95 and first row air admission hole 55 at spring, can be constituted air-pressure chamber；The first row air admission hole 55 is along center Axial and circumferential size spacing set location, correspondence hinge is made by oneself in 90 degree of orientation angle starting points of a predetermined set orientation angle Position, and below 90 degree orientation angles can self-closing boundary's point, both hinge turn to 90 degree of a predetermined set orientation angle and position Angle starting point is self-positioning, and below 90 degree of orientation angles can self-closing boundary's point when so that exhaust pition can correspond to positioning piston With retaining spring and first row air admission hole 55, can be constituted air-pressure chamber, at the same time the air-pressure chamber can correspond to and coordinate hinge energy It is self-positioning in the orientation angle of predetermined set, so that hinge can be free in 90 degree of predetermined set to 180 degree orientation angle It is self-positioning, and can be self-closing below 90 degree of orientation angles so that hinge can free predetermined set orientation angle.

It is described above, only the utility model preferred embodiment, therefore the utility model implementation can not be limited according to this Scope, i.e., the equivalent changes and modifications made according to the utility model the scope of the claims and description all should still belong to this practicality new In the range of type covers.

Claims (8)

1. a kind of high sealing formula door vapour-pressure type is self-positioning and self-closing hinge, including hinge, solid seat, solid bar and swivel nut, the hinge is set Axle sleeve, the axle sleeve is located in solid seat, and the thin bar that the swivel nut has can be rotated relative to bar admittedly, and the solid bar has screw rod；Its feature exists In：Also include plug, the axle sleeve constitutes center, the center provided with the first row air admission hole run through inside and outside one, the cup and Axle sleeve along axis and the size spaced position of axial and circumferential, be respectively provided with run through inside and outside one discharge into stomata；The swivel nut is fixed in In one end of center, the plug is fixed in the other end of center, the swivel nut and plug interval；Swivel nut in the center Provided with solid bar, the first spring, centre mount, retaining spring and positioning piston between plug；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；First spring top is against between solid bar and centre mount, should Retaining spring contact is between centre mount and positioning piston, and the positioning piston seal is located in center, the exhaust pition and fixed Position piston space constitutes air-pressure chamber；Wherein：The exhaust pition towards positioning piston activity, air pressure room air through first row air admission hole, Cup and the stomata that discharges into of center are discharged, and exhaust pition is being slided behind first row air inlet hole site, the sky in air-pressure chamber Discharge into stomata of the gas through cup and center is discharged.

2. a kind of high sealing formula door vapour-pressure type according to claim 1 is self-positioning and self-closing hinge, it is characterised in that：Also wrap Check valve is included, the check valve can be slipped including one and seal the positioning piston of air-pressure chamber, a gas leakage is blocked and one the 3rd spring, should Positioning piston centre sets second row stomata, and the gas leakage, which is blocked, includes the stifled post of a pad and a projection at pad center, the stifled post Adaptation is stretched into second row stomata, the 3rd spring one end contact pad, and the other end can relative contact plug.

3. a kind of high sealing formula door vapour-pressure type according to claim 2 is self-positioning and self-closing hinge, it is characterised in that：In this Heart seat is blow-cook.

4. a kind of high sealing formula door vapour-pressure type according to claim 3 is self-positioning and self-closing hinge, it is characterised in that：Also wrap A cup is included, 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 high sealing formula door vapour-pressure type according to claim 4 is self-positioning and self-closing hinge, it is characterised in that：Also wrap Adjustment seat is included, the cup adjustably can be located in center along center, the adjustment seat connects cup through plug, that can adjust Axial location of the cup with respect to center.

6. a kind of high sealing formula door vapour-pressure type according to claim 5 is self-positioning and self-closing hinge, it is characterised in that：The cup Body is provided with a step, is moved for limiting positioning piston along close to the 3rd spring direction, the 3rd spring top is against the cup of cup Between bottom and pad.

7. a kind of high sealing formula door vapour-pressure type according to claim 1 or 2 is 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 high sealing formula door vapour-pressure type according to claim 1 or 2 is self-positioning and self-closing hinge, it is characterised in that： Also include the loop coil that can be located at affixedly in center, the loop coil is located between swivel nut and exhaust pition, the screw rod spiral shell of the solid bar Connect through loop coil and be spirally connected again swivel nut.