CN103032004A

CN103032004A - Damped self-centering hinge

Info

Publication number: CN103032004A
Application number: CN2011103113629A
Authority: CN
Inventors: 邹忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-09-30
Filing date: 2011-10-14
Publication date: 2013-04-10
Also published as: WO2013064001A1; GB201117784D0; CN202659015U; GB2495154B; GB201116913D0; GB2495154A

Abstract

A door hinge with a stop device for self-centering in a door, comprising: a housing having a bore, a support, a pair of clamps, a shaft with an upright axis and first and second centering cam surfaces, a closure, and a damping device; the closing device comprises a pusher head with a closing contact surface and a spring arranged to urge the contact surface into engagement with the first centring surface; the damping piston includes a check valve; the damping device comprises a working fluid and a piston comprising a piston head and a sleeve slidably mounted within a cylinder, a spring located within the cylinder, the piston having a projection with a damping contact surface urged by the spring into engagement with the second centering surface of the shaft; the closing devices and the damping devices extend radially from the axis of the rotating shaft in opposite directions; the inner surface of the damping piston head, the sleeve and the cylindrical barrel form a first chamber, and the outer surface of the damping piston head, the bore and the shaft form a second chamber for the working fluid.

Description

Damping self-centering hinge

Technical field

The present invention relates to for door, glass door particularly, special but non-only be the hinge of frameless glass door.

Background technology

The frameless glass door majority is heavy, and may form with bilayer or triplex glass assembly, particularly when it is used as the gate facing the street or is used for cold store.This door can be heavy, and is necessary to use firm hinge, makes that autoshutdown is to the fastening position of centering reliably, and so as to not make needs bolt or arresting stop.

Frameless glass door with stop member in the door was disclosed, for example in the United States Patent (USP) of No. 6560821, US.The WO2011/020630 patent discloses the glass door hinge with arresting stop in the door, and it comprises: housing; Bearing, it is connected to supporting member with this housing; A pair of anchor clamps; Axial rotating shaft; And a plurality of biasing members, it is arranged to and this rotating shaft engagement, so that those anchor clamps return a plurality of positions of being selected from fastening position and one or more open positions one of them; Wherein this rotating shaft is with a plurality of centering surface, and each biasing member is arranged to the centering surface application of force to correspondence, so that this hinge is centered in the one or more positions in those positions.The disclosure of this manual is incorporated in the disclosure of the specification in the mode of introducing for all purposes.

Summary of the invention

According to the present invention, the door hinge with self centering arresting stop in the door is provided, it comprises:

Housing, it is with upright hole;

Bearing, it is connected to supporting member with this housing;

A pair of anchor clamps;

Rotating shaft, it is installed in this hole;

Shutoff device, it is in this housing and be suitable for and this rotating shaft engagement, reaches to closing or centered positions to impel this hinge;

Damping unit, it is in this housing and be suitable for and this rotating shaft engagement, with this hinge of damping towards this fastening position motion;

Wherein this rotating shaft is with vertical axes and the first and second centring jaws surface, those centering surfaces are arranged to impel this shutoff device and damping unit alternately to leave this axis when this housing leaves respectively with respect to this rotating shaft or turns to this fastening position;

Wherein this shutoff device comprises with at least one and cuts out cutting somebody's hair of contact surface and spring, and this spring is arranged to impel this contact surface and the first centering surface engagement;

Wherein this damping unit comprises working fluid and piston, this piston comprises piston head and the sleeve that is slidably mounted in the cylindrical drum, spring is positioned at this cylindrical drum, this piston is with the extension of tool damping contact surface, and this damping contact surface is subjected to this spring to impel the second centering surface engagement with this rotating shaft; This damping piston comprises flap valve;

Wherein shutoff device and damping unit radially extend in the opposite direction from this shaft axis;

Wherein the inner surface of this damping piston, sleeve and cylindrical drum form the first chamber, and the external surface of this damping piston head, hole and rotating shaft then form the second chamber of working fluid;

When this damping piston is shifted to shaft axis in use, place the interior working fluid of this second chamber then by the flap valve of this damping piston, when this damping piston moves apart this shaft axis, then be obstructed by the backflow of this flap valve.

This hinge preferably uses with glass door, more preferably frameless glass door.Anchor clamps move to and open or close the position and door is moved to open or close the position.When biasing member rotates during door opens or closes, those surfaces of feeling relieved, cam face will be served as in the surface of particularly mainly feeling relieved.

In a preferred embodiment, adjustable valve is arranged in this housing;

The first conduit communicates between this first chamber and this adjustable valve;

The second conduit communicates between this second chamber and this adjustable valve;

Therefore the adjusting of this valve has been controlled working fluid and has been flow to this second chamber from this first chamber, shifts to this hinge of damping and closes or centered positions.

It is preferred using single adjustable valve.Yet, if required, can use two or more adjustable valves.

Have several advantages according to hinge of the present invention.Use two independently shutoff device and damping unit allow it to produce with simple and firm structure separately so that can select to close and damping force and damping distribute, cooperate any specific application.For example, the firmer damping unit weight that can be used to easily slam during use or large door.

The position of this damping unit is at the offside of this shutoff device to rotating shaft, provides with closing with damping piston and both compares the more structure of balance at the hinge of the same side of shaft axis.The wearing and tearing of bearing are reduced, so that cam face is because continuing to use the possibility of misalignment lower.In the situation of the cam face that relatively little second or centre are arranged (if words of existence as described below), this is particular importance, because if this rotating shaft can not accurately be aimed at, the edge of these cam faces may be worn.

This working fluid is preferably oil or hydraulic fluid.

This damping unit comprises the loop of working fluid, and its chamber from this spring place extends to this adjustable valve, and extends to outer front surface and the cam of this rotating shaft or the chamber of centering surface engagement that is positioned at this damping piston from this adjustable valve.Therefore moving component is maintained at good lubricating status.

Single adjustable valve can be positioned at the outside of this housing, makes things convenient for so that regulate simple.

This shutoff device is arranged in the independently chamber of this housing, can fill oil or other fluids, but this is optional.When using piston apparatus, can be provided with one or more slots, with when this piston is in use expanded or be flexible, allow this working fluid cycles.The dimension of slot can be set to flowing of energy suppression fluid, for hinge provides extra damping.Perhaps, this slot can must be enough to greatly allow to flow freely.

Otherwise, between these two chambers, having in the free-pouring device, the unlikely adjustable valve that utilizes is controlled damping.

This first and second centring jaws surface can be with similar or different configurations.In a preferred embodiment, those surperficial radial cross-section approximate half-circular.Preferably, those planar sections extend to the place ahead of shaft axis, so that this axis passes this rotating shaft but space before not passing this plane surface.Can be provided with those plane surfaces rectangular second and stop the surface.This allows hinge to be parked in open position, for example with close centered positions and become 90 °.If this closure element extends to outside this shaft axis in this centered positions, then this layout is infeasible.

Should or respectively stop the surface and can be arranged to and this main biasing member engagement, so that the anchor clamps of hinge remain on open position.Preferably, this hinge remains on open position and fastening position meets at right angles.

Preferably, should or respectively stop the surface and should meet at right angles on main centering surface.

Two parallel surfaces that stop preferably to be provided.Two open positions are preferably arranged, and its either side in the fastening position both sides meets at right angles.In this device, this can be maintained in its closed position rectangular open position on the either side in the both sides.Unless opposite house applies the power that the little power of closing is enough to overcome main spring, otherwise the door of attached this hinge can the either direction in both direction stay open.

In the following description, be referred to as nearby (proximal) towards the direction of biasing member or piston, away from then being referred to as at a distance (distal) towards the biasing member of rotating shaft or the direction of piston.

In a preferred embodiment, this rotating shaft be arranged to when main centering surface to nearby towards biasing member the time, should or respectively stop the surface can extending with respect to the centering surface with meeting at right angles, and this stops surperficial with towards the edge nearby of this biasing member and the edge, distant place of this biasing member dorsad.

When this position, this stops the surface and preferably extends to the position nearby of this shaft axis from this shaft axis at a distance position, or extend to the diameter of this parallel rotating shaft in surface of mainly feeling relieved on axis on the position.In the latter's layout, should or two nearby the edge be located on the rotating shaft diameter in the fastening position, this is orthogonal with this rotating shaft diameter at the edge nearby, should or respectively stop the surface preferably to the distant place extension of this rotating shaft.In this arranged, because this biasing member and this stop to adjoin between the surface, this hinge can't rotate angularly in the angle that surpasses open position.Hinge promotes by biasing member towards the rotation of fastening position, this biasing member with main centering surface engagement before contact and stops surperficial edge nearby.

In the embodiment that substitutes, the edge is positioned at the rotating shaft diameter nearby nearby.In this device, stop the surface preferably with certain enough distance to extending nearby, turn to fastening position to provide reducing power to remove to resist hinge.Can select this distance between edge and this diameter (or shaft axis) nearby, so that the biasing member reducing power that provides the door that is enough to allow to be fastened to this hinge to remain on open position, but this power is not so great that again order is to feeling difficult at closing time.The length of distance and thereby the size of reducing power can depend on width, the weight of door and following the deciding with the dynamics of family of door.

In a preferred embodiment, main centring jaw surface is positioned to the rotating shaft diameter nearby.This is with several advantages.This promotes hinge to close.Spring in the use and the spread length of other biasing members reduce.This allows to use more powerful but more cheap spring.The capacity of the lubrication oil of dislocation also reduces during rotating shaft is rotated.This makes oil that long working life be arranged.

Can be provided with further cam face at the neighboring edge on the edge nearby that stops the surface and main centering surface.This further cam face can be circular, opens and closes swimmingly to promote this hinge, reduces the wearing and tearing of contact surface.This allows to come the production rotating shaft with more secondary steel.

Can be provided with one or more intermediate surface between this first surface and second surface, it is positioned in the middle of this first surface and the second surface with certain angle.Those intermediate surface can be plane or convex, and can be used for hindering or stop hinge to close in certain middle angle.In this layout, can prevent that door from unexpectedly slamming.Those intermediate surface can become 30 °, 45 ° or 60 ° of angles with the main centring jaw surface of closing.Biasing member and intermediate surface engagement can be lowered the speed of a rotation, maybe can allow door to be parked in the angle of this centre.

Anchor clamps can be suitable for glass door panel is securely meshed.Glass door panel can be with the hole, to hold the bolt that passes those anchor clamps.Perhaps or additionally, those anchor clamps can see through friction or see through and mesh glass door panel with adhesive.

This hinge preferably includes the damper assembly that opens or closes motion for this hinge of damping.Preferably, biasing assembly comprises damping unit, to limit the speed of this hinge through, particularly turns to the speed of fastening position from open position.This damper assembly also can limit the speed that turns to the position of opening fully from the position that partially opens.

In first preferred embodiment, this hinge comprises the second biasing member and the second spring, and it is arranged to and one or more the second centering surface engagement, enters one of them of two open positions to impel door.

This or each second centering surface can be the surfaces plane or cylindrical spill.

Perhaps, this second centering surface can comprise cylindrical member, and its and quilt parallel with shaft axis is moved apart shaft axis.Use cylindrical surface to have to reach that to cause damping smooth and easy and only produce a little this advantage of wearing and tearing at moving-member.This cylindrical member is preferably located in the circumference of this rotating shaft.

Preferably, these two biasing members are integral in individual unit, and have common rotating shaft.

Preferably, two open positions and the fastening position of this hinge meet at right angles, and these two second centering surfaces are orthogonal with main centering surfaces, and on diameter toward each other (diametrically opposed).That is to say that those second surfaces can be arranged to facing to rightabout, meet at right angles with this surface of mainly feeling relieved.

The power of main spring is preferably large than the power of the second spring.By this way, be positioned at or be close to arbitrary position of two open positions except not gate, otherwise hinge will move to fastening position.Therefore this hinge can comprise hypercentre (overcentre) device, and in this device, when the either direction of door in both direction opened, it will shift-in fastening position or open position.The angle position of each central point on each side of fastening position is preferably near open position.

Main spring can comprise a pair of concentric spring.Outer spring can be comparatively powerful spring, thinks that hinge provides the power of closing.Inner spring can be than a little less than the outer spring, and is arranged to and can provides the power of closing towards biasing member the time for flap valve.This flap valve further is described as follows.

Each biasing member can comprise the piston that is installed in the cylindrical hole, is used for radially mobile with respect to rotating shaft.

This closure element can comprise the piston that can slidably move in cylindrical drum, this piston comprises piston head and sleeve, preferably columniform sleeve.This piston head can be with the extension of the one or more contact surfaces of tool.Spring can be positioned at this sleeve and be arranged to and mesh with the rear surface of this piston head, to impel the centering surface engagement of this contact surface and this rotating shaft.

Rotating shaft can be installed in the upright guide groove in the housing, and this guide groove communicates with one or more passages, and those or each biasing member are positioned at passage, to allow hydraulic fluid or other oil circulations during advancing at hinge.

This rotating shaft preferably includes the attachment that is suitable for the anchor clamps engagement.The end of this rotating shaft can comprise be configured to can with the head of the socket of one of them anchor clamps engagement so that this rotating shaft and anchor clamps are forced and are together rotated.

In a preferred embodiment, this rotating shaft comprises axially the member that extends, and it is with closing cam face and one or more damping cam face, and it is configured to, and to close cam face axially spaced apart with this;

This close and the damping cam face between be provided with obstruction, it extends towards the surface in this hole, with stop in a large number during use fluid this close and the damping cam face between flow.

The degree that the flowing of this fluid preferably is prevented from makes in this obstruction one side and increases the fluid pressure that fluid pressure can not cause this obstruction opposite side to increase, and is enough to reduce the power of closing that the piston of this closure element is executed.

Yet, can between this obstruction and this hole, be provided with enough spacings to allow this fluid be lubricated.

This obstruction can comprise the cylindrical annular thing, and it radially extends to the position on the surface in contiguous this hole from this rotating shaft.

This is closed or cam face can be parallel with the contact surface of this piston in the full extended position of this piston.

This close or the diameter on the surface of feeling relieved or width preferably less than the diameter of this cylindrical annular thing or other obstructions.This diameter of closing cam or centering surface can be this ring diameter 70% to 98%, be preferably 80% to 98%, more preferably 85% to 95%.Use less diameter or width lowered this or those close the compression degree of spring.Thereby reduced the friction and wear of those closing surfaces.

In a preferred embodiment, should or the piston of each biasing member comprise flap valve, it is arranged to allow oil to flow into cavity when this piston and cylindrical drum expansion.By this way, oil will enter from the cavity circulation of this piston the cavity between this piston and the rotating shaft, and returns into this piston cavity in the compression of this piston and the cycle period of expansion.During this cycle period, the centering surface of this rotating shaft and the capacity of the available cavity between the piston increase when this piston is compressed, and expand to when meshing fully with this centering surface at this piston and to reduce.The effect of the variation on this capacity is that oil pump is crossed this flap valve, so that oil circulation during this hinge and door opening and closing.The circulation of oil helps efficiently damp hinge.

Main piston and one or more slot can be provided, flow out from cavity at this piston compression initial stage to allow oil.

In a preferred embodiment, this piston is with head and cylinder-shaped body, the dimension of this cylinder-shaped body is configured to slidably be accommodated in the cylindrical hole of sleeve, and being provided with one or more slots at the predetermined axial distance from this, this slot or those slots will be stopped by sleeve after this main body slips into this cylindrical sleeve within a predetermined distance.This layout can flow out oil easily from this piston cavity, until this piston has been retracted to predetermined degree, the afterwards mobile meeting of oil is hindered or is obstructed, thereby reaches to the double speed damping effect.

Main flap valve can be impelled to the distant place by the inner spring of main biasing assembly and enters fastening position.Can select the length of inner spring, so that the suitable power of closing to be provided to this valve.Preferably, the length of this inner spring is long than outer spring.

This damping piston can be with the one or more sleeves that cut part of tool, this cuts part one or more passages is provided, its outside along this sleeve extends in the position of the end of this sleeve, and it communicates with internal cavity, depends on the stretching, extension of this damping piston and fixed and different dampings is provided.The cross-sectional area of this passage or those passages can change along the length of this sleeve, increase during for example away from this rotating shaft so that when this sleeve and piston head compressed and during away from this shaft axis, provide less cross-sectional area confession Fluid Flow in A.When this damping piston approaches the position of fully compression, can stop flow to cross this passage or those passages.The contact surface of this extension can be spill or cylindrical, so that shallow depression to be provided.This is available to prevent from adhering to the cam face of this rotating shaft.When continue using, the cam face out-of-flatness that can become.Cam face can be the plane or crooked.Use spill or columniform surface can be conducive to guarantee that those surfaces smoothly and without barrier contact mutually when this hinge through.Avoid the excess compression of this spring, reduced the frictional force between the moving component.Use the recessed zone of this piston on cutting somebody's hair that several advantages are provided.This concave surface helps to carry out damping when the door that this hinge has been installed is closed.If the center contact surface of this rotating shaft becomes coarse or uneven because of wearing and tearing, just guarantee to contact well with this rotating shaft.In addition, this concave surface is used to discharge the compression that this closes spring.When this hinge was opened, this reduced the friction when door is opened to 75 ° to 85 °.This recessed zone can provide and for example allow the recess of any residue accumulated that can occur when long-term the use.

This contact surface can comprise middle part part and two exterior sections, and this middle part part is positioned at the position axial with respect to shaft axis, and this core is length or short from the length the piston head than the length of exterior section from piston head.

In first embodiment, this middle part part is longer, and further extends to rotating shaft, so that this contact surface is convex haply.

In the embodiment that substitutes, this middle part part is shorter, so that this contact surface is spill or aduncate haply.

Those middle part parts and exterior section can be crooked or planes individually, and can form continuously or the axially contact surface of symmetry that is interrupted.For example can be provided with level and smooth recessed or convex surface.Perhaps can be provided with scalariform configuration.

Select suitable contact surface to distribute and the configuration on centring jaw surface in use during hinge through control close power and damping force.

In the embodiment that substitutes, that this contact surface can be convex or stretch out with columniform form.

Convex or outward extending surface can help to make spring maintain compressive state, door can be blown to being subjected to high wind open.

This housing and base can be arranged to allow easily to install heavy or large door.In a preferred embodiment, this housing can be with the protuberance of bending, and for example circular protuberance is preferably with the convex part that is the part sphere, its dimension is set to fit into the circular configuration that matches, and the recess that is the part sphere of the base of hinge for example has been installed thereon.

Perhaps, this protuberance sees it is oval-shaped or crooked from the plane.

Use this device to allow when mounted protuberance to be placed in the socket, then be released and aim at more accurately during with the engagement of this bearing when the weight of door.

Description of drawings

By non-limitative example and with reference to accompanying drawing, further describe the present invention, in the accompanying drawings:

Fig. 1 is the stereogram according to hinge of the present invention;

Fig. 2 is the cross-sectional view of hinge;

Fig. 3 is the stereogram that shows damping piston;

Fig. 4 is the stereogram that shows closure piston;

Fig. 5 is the stereogram of rotating shaft;

Fig. 6 shows the erecting device of this hinge;

Fig. 7 is the exploded view of this hinge;

Fig. 8 is the cross-sectional view of series of displays cam face when becoming different angles with closure piston; And

Fig. 9 to 17 shows a plurality of structures of biasing member.

The specific embodiment

Following description has used identical Reference numeral to represent identical assembly in the different accompanying drawings.

Fig. 1 shows the stereogram according to hinge of the present invention.The a pair of anchor clamps (1) that are installed on the housing (3) form groove (4), and glass door panel (and do not show) is engageable in this groove.

Base plate (2) is used as supporting member, and it is arranged to be secured to floor or ground (and do not show).As shown in Figure 6, bearing (5) can be fastened in the base plate (2), so that door equipment is easily assembled.

Fig. 2 shows the cross-sectional view of this hinge.Rotating shaft (6) is axially uprightly extended in hinge bodies.This rotating shaft (6) is accommodated in the interior blind hole (11) of housing (3), and this pore area has the upper end (12) of sealing.Packing ring (13) seals up this rotating shaft and hole, prevents in use seepage of working fluid.Be accommodated in the socket that shape and bearing (5) match at the square fixedly projection (7) of this rotating shaft lower end, prevent that this rotating shaft from rotating in use.Bearing (9,10) allows housing (3) to rotate around this shaft axis.

Shutoff device (14) is installed in being substantially in the columniform chamber (15) in the housing (3), its from the hole (11) radially extend.Chamber (15) is sealed by the cylindrical drum that is threaded end cap (16).The closure piston that comprises cylindrical sleeve (17) and piston head (18) slidably is accommodated in the cylindrical drum (16).Piston head (18) is with extension (19), and it radially extends through slot (20) from chamber (15) and enters hole (11).A pair of helical spring (21,22) extends between the rear surface of the end cap of cylindrical drum (16) and piston head (18), with contact surface (25) and rotating shaft (6) engagement that impels extension (19).

Cylindrical annular thing (31) radially extends to the circumference of the inner surface of adjacent bores (11) from this rotating shaft.Clearance between ring (31) and hole (11) is enough to allow lubricating fluid pass through, but little as to be enough to prevent that fluid pressure side from this ring during door opens or closes from passing to opposite side when normal the use.

Therefore cavity between this rotating shaft and this hole is divided into up and down two parts.Lower chambers (23) is by slot (20) and communicating to forward part of chamber (15) in piston head (18) radially.When this piston head in use radially moved in or out, slot (24) allowed working fluid to flow through this piston head.As described below, upper chamber (30) communicates similarly with at the interior cylindrical damping chamber of this damping piston of having settled.

The contact surface (25) of extension (19) is accommodated in the socket that the cam face (26) by the general planar of the upper surface of the soffit of ring (31), another lower ring (27) and rotating shaft (6) limits.The contact surface (25) of cam face (26) and extension (19) extends abreast and radially towards this shaft axis extension, consequently this contact surface can not extend to outside this axis during use.

As shown in Figure 5, the plane stops surface (28) and erectly extends, and meets at right angles with cam face (26).Be provided preferably with two and stop the surface.These are used for making during use door to stay open.This device we advocate the priority of No. 1017405 UK Patent Application and the PCT patent application (attorney docket B18-030) of submitting on the same day at length open, its disclosure is incorporated herein in the mode of introducing for all purposes.

Door opened this hinge serobila is rotated with respect to this rotating shaft.Rotate so that extension (19) rotates with respect to cam face (26) from the centered positions of closing, impel this extension and piston radial ground outwards with Compress Spring (21,22).During this piston movement, the working fluid in the chamber (15) radially inwardly flows through the slot (24) in this piston head, enters the cavity of this piston head front between this hole and rotating shaft.

When door was opened to 90 °, this hinge can and rectangularly stop surface (28) engagement and stays open because of the end of this extension.Light pressure on the door has been enough to discharge this hinge, and those springs impel this housing to rotate with respect to this rotating shaft afterwards, just is back to the centered positions of closing so that door need not to see through further manpower.

What as shown in Figure 5, can be provided with one or more centres stops surface (53).Be positioned at and stop the surface so that in the situation that door is brought into play damping force by quick closedown in the middle of Jie's main cam surface (26) and rectangular those of certain angle that stop between the surface (28).

The width on plane cam surface (26) or diameter are less than the diameter of ring (27) or (31).Preferably, the diameter of each cam face is less than the diameter of ring (27), (31) or (49), to reduce the in use wearing and tearing of those assemblies.The diameter on surface (26) can be ring (27) diameter 70% to 98%, be preferably 80% to 98%, more preferably 85% to 95%.Reduce diameter those distances that stop between the surface (28) are reduced, therefore lower spring (21,22) the compressed degree in the fully open position of this hinge of closing.The power of closing that this closure piston applies is reduced, so that friction and long term wear between contact surface (25) and the surface (28) also reduce.

This damping unit is arranged in the damping chamber (29) that radially extends with shutoff device (14) rightabout.This damping chamber can be closed chamber with respect to this and axially is offset.

The piston that comprises piston head (32) and cylindrical sleeve (33) is installed in slidably motion in the cylindrical drum (34).One way stop peturn valve comprises seat (35) and is positioned at the valve stop member (36) of this piston.Slot in the valve head (37) allow working fluid in this piston the first chamber (38) and radially pass through between the second chamber (39) in piston head (32).Fluid can flow to the first chamber (38) by valve (35,36) from the second chamber (39); But flowing from the first chamber (38) to the second chamber (39) closed and is obstructed because of valve (35,36).

Extend from piston head (32) with the extension (44) towards interior contact surface (45) radially.Contact surface (45) can be the spill plane, slight or with the middle part cylindrical depression, and be arranged to this rotating shaft on one of them engagement on two plane cam surfaces (46).

The offside of cam face (46) and this shaft axis extends in parallel, and meets at right angles with the cam face (26) of closing of this rotating shaft.Stop surface (47) extends with cam face (46) with meeting at right angles.Second stops surface (48) at cam face (46) and stops certain intermediate angle of one-tenth between the surface (47), for example becomes 60 °, 45 ° or 30 ° of extensions with this cam face.

In the embodiment that substitutes, this contact surface can be convex or with outside cylindrical depression.

Upper ring (49) is used for limiting socket (50) with ring (31) and cam face (46), to hold extension (44) when this hinge is rotated.When door was opened or closed, this hinge housing rotated around this rotating shaft, made this close compressed with damping piston or expanded, and compression or spread scenarios depend on each cam face to decide with respect to the orientation of the extension of those pistons.When this closure piston was compressed, this damping piston was expanded, so that working fluid radially flows into this fluid and the contacted chamber of this spring (38) outwardly from chamber (39), so that this fluid is positioned at this piston in large quantities.

Cylindrical drum (34) is with the slot (43) that communicates with the first conduit (41), and this conduit extends to first side of the screw valve regulated (40) in the hole of the outside that is arranged in housing (3) from chamber (29).The second conduit (42) extends to the second chamber (39) from second side of this adjustable valve (40).When this screw valve was opened, working fluid can flow to this second chamber from the first chamber (38).This valve portion is closed, and has suppressed flowing of fluid, the motion of this piston of damping and prevent a quick closedown.

When closing with staff or discharging door when allowing to close (power that the reason of closing is spring (21,22)), this damping piston is just compressed.A little less than the power of the force rate spring (21,22) of spring (51) is.Spring (51) as suppressing opening of this hinge, comes the opening and closing activity of this hinge of damping by this spring of compression.During opening, can be provided by the frictional force of this spring further damping.Can be provided with a pair of spring, weak spring is for longer, to keep damping force in the whole process of this piston movement.

Fluid pressure in the first chamber (38) increases, and one way valve (35,36) also is closed, and stops fluid by this valve.Because pressure increases, fluid is forced to by the slot in the cylindrical drum (43) and enters the interior conduit (41) of housing (3).To the first side of this screw valve and enter conduit (42), this conduit makes this fluid be back to the damping chamber (29) of this damping unit to fluid, radially inwardly towards this piston head, near this rotating shaft, as shown in Figure 2 by conduit (41).The slot of regulating this screw valve has limited the maximum rate that flow is crossed this valve, so that the motion of closing or feel relieved of this hinge of pressure restraining that increases in the chamber (38).

The external surface of sleeve (33) is provided with and cuts part (52), to form the passage that allows fluid to flow to slot (43) and valve (40) from the first chamber (38).The cross-sectional area of this passage can change along the axial length of this sleeve, and it inwardly radially reduces with respect to this rotating shaft, so that compressed and less cross-sectional area confession Fluid Flow in A is provided when moving apart this rotating shaft when sleeve (33) and piston head.

When this damping piston reached to complete compression position, Fluid Flow in A can be subjected to suppress and can be prevented from.By this way, when approaching, this hinge closes fully or during centered positions, damping force will increase.When reaching to closing fully or during centered positions, the closing movement of this hinge can be reduced and can be stopped.

When this hinge was opened, the increase of fluid pressure caused because of the pressure of spring (51) and piston head (32) in the second chamber (39).Because the inner surface of ring (31) adjacent bores (11) is so fluid is prevented from flowing into the running chamber of this shutoff device.

By this way, fluid is retained in the second chamber (39) and flows through flap valve (35,36).This guarantees having an amount of fluid to generate enough pressure between flyback period in the first chamber (38), crosses the loop that is limited by adjustable valve (40) and conduit (41,42) to force this flow.

Fig. 6 has illustrated stand apparatus.In assembling process, use bolt or other fasteners to make base plate (2) be fixed on the floor.This bearing comprises slit (70), and it is with the middle part socket (71) that is the part sphere.In the embodiment that substitutes, this middle part socket is seen from the plane and be can be ellipse or avette.The long element (74) that bearing (5) matches with shape and middle part be substantially part sphere, ellipse or avette protuberance (75).Protuberance (75) is configured to be fit to feed in this socket, can be aligned to make this bearing that is attached with door when assembly process is discharged into socket (70,71) when it.

Fig. 8 has illustrated the alternate configuration of this piston and rotating shaft.In use, when particularly continuing to use, the centering surface of this rotating shaft can be worn and become unsmooth.When door opened to 60-80 °, this can produce friction because of the compressive force of this spring.In order to address this problem, the contact surface (60) of the extension (61) of piston (62) can spill or columniform surface forms, as shown in Figure 8.Use spill or with the surface of cylindrical depression so that the decrement of this spring reduce, this be since this extension by radially outwards mobile (being illustrated in figure 8 as downwards) to with the same degree in plane contact surface.This has lowered this closes spring compressed degree in the fully open position of this hinge.

In a preferred embodiment, the exterior section of this contact surface is the plane, and the middle part partly is spill or columniform.This helps to close fully or lower closing velocity during centered positions when approaching.

When 90 ° of positions, this rotating shaft contacts the fluted column shape bottom of this piston.When this angular misalignment to 85 °, the running of the autoshutdown of this hinge just can begin, and continuation when this angle moves to 30 ° from 60 ° and 45 °.When this angle reached 30 °, the contact surface of extension (61) became flat shape (63) from recessed or cylindrical shape.When this angle reached 15 °, the cam face of this rotating shaft and planar section (63) meshed slidably, so that closing velocity reduces.In being closed into 0 ° position fully, this rotating shaft contacts two complete planar sections (63) of extension (61).

Owing to being complete plane and the embodiment that divides without the fluted column shaped part according to contact surface, the stretching, extension of spring carrier (and do not show) in this piston is reduced, so the friction between this piston and the rotating shaft all is reduced.

Fig. 9 to 17 shows the different structure that comprises with the biasing member of the piston of cutting somebody's hair.

Fig. 9 shows the piston of the biasing member comprise piston head (80), and this piston has backward or to cylindrical sleeve (81) and rear end (82) of extending nearby.This rear end is open, to hold spring (and do not show).Extend forward from piston head (80) from the projection (83) of the journal offset of cylindrical sleeve (81), and with the contact surface (84) on smooth or plane, it is arranged to and centring jaw surface (and the do not show) engagement of rotating shaft.In use, because the engagement that is resisting the reducing power that is provided by this spring with cam face, piston radially moves in or out with respect to shaft axis.

Figure 10 shows the instead of piston with contact surface, and this contact surface has the axial component (85) of the cylindrical spill between the exterior section (86) that is positioned at a pair of smooth or plane.The middle part part (85) of this cylindrical spill is used for reducing the frictional force that the compression because of spring (and do not show) causes, to reduce the wearing and tearing on moving component when continuing to use.

Figure 11 shows further alternate embodiment, and wherein middle part part (87) smooth or the plane is positioned between the exterior section (88) on two shoulder positions (89) and smooth or plane.In this arranges, middle part part (87) take than exterior section (88) as short distance from piston head (90) extend, with the frictional force of minimizing spring when the maximum compression.

Figure 12 shows further alternate embodiment, and wherein the middle part part (91) of cylindrical convex is extended from piston head (93) with the exterior section (92) on or plane smooth than two distance far away.

Figure 13 shows further embodiment.The axial middle part part (94) on plane is positioned between the exterior section (96) on two shoulder positions (95) and plane.The middle part part (94) of contact surface is extended from piston head (97) with the distance far away than those exterior sections (96).

Figure 14 shows further embodiment, and wherein continuous cylindrical convex contact surface (98) extends across the whole width of extension (99).

It is similar to the piston that shows in Fig. 9 that Figure 15 shows, the V-arrangement slit (100) that wherein embeds sleeve (103) extends to open end (102) backward from the upper centre position (101) of this sleeve.(102) increase the cross-sectional area of slit (100) towards the end from point (101) forward, so that being flowing in when piston forward is shifted to rotating shaft in the axial hole (and do not show) of oil increases.

Figure 16 shows further embodiment, wherein this sleeve (104) is with the smooth sector (105) that removes from it, so that the opening that extends to the rear end (107) of sleeve from the point (106) of sleeve front to be provided, the cross-sectional area of groove increases towards the end (107) of sleeve from this point (106) backwardly, when piston in use stretches to rotating shaft, allow more oil to flow through.

Figure 17 shows another embodiment, and its middle sleeve (108) is with V-arrangement slit (109), and it extends to the opening of the rear end of this piston from the part in the middle of certain.Piston head (110) is with projection (111), and it extends forward, to form contact surface (112).This contact surface (112) is with the axial plane part (113) at middle part, have sloping portion (114) on the either side in its both sides, extend to the outer surface level part (115) that the outward flange at projection (111) forms.By this way, contact surface to piston extend axially and countershaft (do not show) radially extend into maximum distance, and together form with shorter extension (115) on each outside.

Claims

1. Door hinges with a self-centering stop in the door, comprising:

a housing with an upright hole;

a standoff connecting the housing to the support member;

a pair of clamps;

a rotating shaft, which is mounted in the hole;

closing means within the housing and adapted to engage the shaft to urge the hinge to a closed or centered position;

damping means within the housing and adapted to engage with the shaft to dampen movement of the hinge towards the closed position;

wherein the shaft has an upright axis and first and second centering cam surfaces, the centering surfaces being arranged to urge the closing device and damper when the housing is rotated relative to the shaft away from or towards the closed position, respectively. means alternately away from the axis; wherein the closing means comprises a push head with at least one closing contact surface and a spring, the spring being arranged to urge the contact surface into engagement with the first centering surface;

The damping piston includes a check valve;

Wherein the damping device includes a working fluid and a piston, the piston includes a piston head and a sleeve slidably installed in a cylindrical barrel, the spring is located in the cylindrical barrel, the piston has a protrusion with a damping contact surface, the damping the contact surface is urged by the spring to engage the second centering surface of the shaft;

wherein the closing means and damping means extend radially in opposite directions from the shaft axis;

wherein the inner surface of the damping piston, the sleeve and the cylinder form a first chamber, and the outer surface, bore and shaft of the damping piston head form a second chamber for working fluid;

When the damping piston moves toward the shaft axis, the working fluid placed in the second chamber flows through the check valve in the damping piston, and when the damping piston moves away from the shaft axis, the backflow through the check valve is blocked.

2. The hinge of claim 1, further comprising an adjustable valve located in the housing;

a first conduit communicating between the first chamber and the adjustable valve;

a second conduit communicating between the second chamber and the adjustable valve;

Adjustment of the valve thus controls the flow of working fluid from the first chamber to the second chamber to dampen movement of the hinge towards the closed or centering position.

3. The hinge of claim 2, wherein the adjustable valve is located on the exterior of the housing.

4. A hinge as claimed in any preceding claim, wherein the closing member comprises a piston slidably movable within a cylinder, the piston comprising a piston head and a sleeve, the piston head having a contact surface. A protruding portion, a spring located within the sleeve, is arranged to engage the rear surface of the piston to urge the contact surface into engagement with the centering surface of the shaft.

5. A hinge as claimed in any preceding claim, wherein the shaft comprises an axially extending member with a closing cam surface and one or more damping cam surfaces arranged axially apart from the closing cam surface. separated;

An obstacle is provided between the closing cam surface and the damping cam surface extending radially from the shaft to a position adjacent the surface of the bore to substantially prevent fluid flow between the cam surfaces during use.

6. The hinge of claim 5, wherein the barrier comprises a cylindrical ring extending radially from the axis of rotation.

7. A hinge as claimed in any preceding claim, wherein the damping means comprises a circuit of working fluid comprising a conduit extending from the chamber in which the spring is located to an adjustable valve and from the adjustable valve to The outer front surface of the damping piston engages the cavity in which the centering surface of the shaft engages.

8. A hinge as claimed in any preceding claim, wherein the housing includes a circular protrusion dimensioned to be received in a matching circular socket of the mount.

9. The hinge of claim 7, wherein the contact surface of the projection is part spherical.

10. The hinge of claim 8, wherein the contact surface of the protrusion is cylindrical.

11. A hinge as claimed in any preceding claim, wherein the housing includes a curved protrusion and the base has a cooperating curved recess arranged so that the protrusion can be received and held when mounted. Engage in this recess.

12. The hinge of claim 11, wherein the protrusion and recess are spherical.

13. A hinge as claimed in any preceding claim, wherein the damping means comprises a damping spring to damp the movement of the hinge.

14. A hinge as claimed in any preceding claim, wherein the configuration of the contact surface of the closure means may be selected from: concave, convex and cylindrical.

15. A hinge as claimed in claim 6, wherein the diameter of the closing centering surface is 70% to 98%, preferably 80% to 98%, more preferably 85% to 95% of the diameter of the ring.

16. A hinge substantially as hereinbefore described with reference to the accompanying drawings.