CN103270234A

CN103270234A - Door braking system

Info

Publication number: CN103270234A
Application number: CN201180048350XA
Authority: CN
Inventors: F.格弗斯; N.吉森
Original assignee: Norgren GmbH
Current assignee: Norgren GmbH
Priority date: 2010-10-04
Filing date: 2011-09-24
Publication date: 2013-08-28
Also published as: WO2012045601A1; EP2625363A1; BR112013007983A2

Abstract

A door system (100) is provided. The door system (100) comprises a rail mount (101) and a carriage (102) mounted on the rail mount (101). The carriage is movable along a longitudinal axis of the rail mount (101). The carriage (102) is adapted to couple to a door. The door system (100) can further include a fluid actuator (103) with a cylinder (106) coupled to the rail mount (101) and including a piston rod (206) extending from the cylinder (106) and coupled to the carriage (102). The door system (100) can also include a return assembly (104) coupled to the carriage (102) and providing a biasing force on the carriage (102) and the piston rod (206) in a first direction. The door system (100) can further comprise a braking assembly (105) coupled to the rail mount (101) and when actuated substantially prevents the piston rod (206) and the carriage (102) from moving in the first direction for a predetermined amount of time while the return assembly (104) simultaneously provides the biasing force on the piston rod (206) and the carriage (102).

Description

The door brakes

Technical field

The present invention relates to track installing type door, and more specifically relate to the brakes for track installing type door.

Background technology

Track installing type door is also referred to as slide, for well known in the art and be used for a lot of local, for example railcar, office building, vehicle etc.Track installing type door can manually be opened and/or close.Alternatively, for example can use electric power or fluid dynamic to make a motion.Some track installing type doors wherein use spring that the door bias voltage is closed for what close automatically.For example, can open door by manually applying external force or use fluid dynamic or electric power, and when having removed external force, door be closed again then.Fire exit is the typical case of this layout.Another is exemplified as for example track installing type door of track mounted vehicle.The user manually opens these doors usually, uses biasing spring that these doors are closed again then.The problem that this layout exists is that user one stops at and applies tensile force on the door that door just begins to close immediately.This causes following such difficult situation: process person must continue to keep door to open before safely fully by door.

Some self-closing doors comprise the arrestment mechanism that keeps door to open.For example, many office buildings comprise fire exit, and it keeps standard-sized sheet during normal operating, and close when outage.Track installing type door in the track mounted vehicle mentioned above also comprises can be decided to be door lock the arrestment mechanism of opening.But these arrestment mechanisms need be opened to fully open position with door through the person.Therefore, if between the in the closed position and fully open position of door, then arrestment mechanism does not engage.This situation can make expects all that when discharging door the process person that door stops to feel confused no matter door is in any particular location.

Another problem that the prior art door assembly exists is in case door has stopped at fully open position and begun then closes, and arrestment mechanism just can not be rejoined, and removes not gate and is opened fully again.

Therefore, need a kind of door brakes that door can be stopped at any desired position in the art.In addition, need a kind of door brakes that does not require that in order to rejoin brakes door is opened fully in the art.The present invention has overcome these problems and other problem and has realized progress in the art.

Summary of the invention

A kind of door system according to an embodiment of the invention is provided.This door system comprises rail bed and carriage, and carriage is installed on the rail bed and can moves along the longitudinal axis of rail bed, and carriage is suitable for being connected to door.According to embodiments of the invention, this door system also comprises: fluid actuator has cylinder and is connected to rail bed, and comprises from cylinder and extend and be connected to piston rod on the carriage; And return assembly, be connected to carriage and provide biasing force along first direction at carriage and piston rod.According to embodiments of the invention, this door system also comprises brake assemblies, this brake assemblies is connected to rail bed, and when activateding, when returning assembly side by side provide biasing force on piston rod and carriage, this brake assemblies prevents basically that in the time of scheduled volume piston rod and carriage from moving along first direction.

Provide a kind of according to an embodiment of the invention for the method that door system is braked.This door system comprises: rail bed; Carriage is installed on the rail bed and is configured to and moves along the longitudinal axis of rail bed, and carriage is suitable for being connected to door; And fluid actuator, be connected to rail bed and comprise the piston rod that is connected to carriage.According to embodiments of the invention, this method may further comprise the steps: provide biasing force along first direction at carriage and piston rod.According to embodiments of the invention, this method is further comprising the steps of: brake assemblies is activated, to continue preventing that in the time of scheduled volume piston rod and carriage from moving along first direction when carriage and piston rod provide biasing force.

According to an aspect of the present invention, a kind of door system comprises:

Rail bed;

Carriage is installed on the rail bed and can moves along the longitudinal axis of rail bed, and described carriage is suitable for being connected to door;

Fluid actuator has cylinder and is connected to rail bed, and comprises the piston rod that extends and be connected to carriage from cylinder;

Return assembly, be connected to carriage and provide biasing force along first direction at carriage and piston rod; And

Brake assemblies is connected to rail bed, and when activateding, and when returning assembly side by side provide biasing force on piston rod and carriage, this brake assemblies prevents basically that in the time of scheduled volume piston rod and carriage from moving along first direction.

Preferably, this brake assemblies comprises:

Limit the shell of chamber; And

One or more electromagnet are positioned at chamber, and are configured to magnetically attract when one or more electromagnet are energized piston rod, move with respect to one or more electromagnet to prevent piston rod and carriage.

Preferably, brake assemblies also comprises proximity transducer that brake assemblies is activated, and this proximity transducer has the first that is connected to one or more electromagnet and the second portion that is connected to shell.

Preferably, this door system also comprises circuit, this circuit be positioned at shell and with one or more electromagnet and proximity transducer telecommunication.

Preferably, one or more electromagnet can move between primary importance and the second place in chamber.

Preferably, piston rod extends through shell and contacts one or more electromagnet.

Preferably, this door system also comprises:

Valve optionally provides fluid actuator to be communicated with fluid between the fluid reservoir;

Wherein brake assemblies comprises:

Proximity transducer; And

Circuit with proximity transducer and valve telecommunication, and is suitable in the time of scheduled volume activated valve, is communicated with fluid between the fluid reservoir with sealing fluid actuator basically.

Preferably, return assembly and comprise the cylinder that is connected to rail bed and the drag-line that is connected to carriage.

According to a further aspect in the invention, a kind of for the method that door system is braked, this door system comprises rail bed, carriage and fluid actuator, described carriage is installed on the rail bed and is configured to and moves along the longitudinal axis of rail bed, carriage is suitable for being connected to door, described fluid actuator is connected to rail bed and comprises the piston rod that is connected to carriage, said method comprising the steps of:

Provide biasing force along first direction at carriage and piston rod; And

Brake assemblies is activated, to continue when carriage and piston rod provide biasing force, preventing that in the time of scheduled volume piston rod and carriage from moving along first direction.

Preferably, use the step of brake assemblies to comprise: to encourage one or more electromagnet, so that piston rod is magnetically attracted one or more electromagnet, thereby prevent the further motion of piston rod and carriage.

Preferably, this method is further comprising the steps of: after the time of scheduled volume one or more electromagnet are removed excitation, continue to move along first direction to allow piston rod and carriage.

Preferably, use the step of brake assemblies to comprise:

Valve is actuated into primary importance, closing the fluid communication path between fluid actuator and the fluid reservoir, thereby prevents that piston rod and carriage are towards the further motion of primary importance.

Preferably, this method is further comprising the steps of: after the time of scheduled volume valve activated and turn back to the second place, opening the fluid communication path between fluid actuator and the fluid reservoir, thereby allow piston rod and carriage to continue to move along first direction.

Preferably, this method is further comprising the steps of: determine that piston rod and carriage have moved threshold distance so that brake assemblies is activated.

Description of drawings

Figure 1A is track installing type door system according to an embodiment of the invention.

Figure 1B shows the slipper bracket of track installing type door system according to an embodiment of the invention.

Fig. 2 shows the vertical view of the brakes of track installing type door system according to an embodiment of the invention.

Fig. 3 shows brakes according to another embodiment of the present invention.

Fig. 4 shows the vertical view of brakes according to another embodiment of the present invention.

Fig. 5 shows brakes according to another embodiment of the present invention.

Fig. 6 shows track installing type door system according to another embodiment of the present invention.

The specific embodiment

Figure 1A to Fig. 6 and following description have been described concrete example, and how those skilled in the art make and use best mode of the present invention with instruction.For the purpose of instruction principle of the present invention, and simplify or omitted some conventional aspects.Those skilled in the art will recognize that the modification that drops on these examples in the scope of the invention.Those skilled in the art will recognize that hereinafter described feature can make up to form multiple modification of the present invention in every way.Therefore, the present invention is not limited to hereinafter described concrete example, the present invention but only by claim and equivalents thereof.

Figure 1A shows door system 100 according to an embodiment of the invention.According to embodiments of the invention, door system 100 comprises track installing type door system.Track installing type door system 100 comprises rail bed 101, can be slidably mounted on the rail bed 101 slipper bracket 102, fluid actuator 103, door return assembly 104 and brakes 105.According to embodiments of the invention, carriage 102 can be suitable for being connected to door (not shown).Omitted door so that reduced graph from accompanying drawing.Carriage 102 can use machanical fastener, soldering, combination, adhesive etc. and be connected on the door.Unimportant for purpose of the present invention for the concrete grammar that carriage 102 is connected on the door, and never should limit the scope of the invention.Rail bed 101 can be connected to or otherwise be attached to doorframe etc., in order to door is installed in the opening.

According to embodiments of the invention, rail bed 101 can comprise path 10 1a, can see path 10 1a in the end of rail bed 101.Connector 101b or other retainer can be inserted among the path 10 1a, so that slipper bracket 102 is remained in the path 10 1a.Figure 1B shows the slipper bracket of removing from rail bed 101 102.As can be seen, slipper bracket 102 can comprise that one or more groups takes turns 120 or the bearing of other type.Wheel 120 can be admitted by path 10 1a, moves along the longitudinal axes L of rail bed 101 to allow slipper bracket 102.As can be appreciated, when the wheel 120 of slipper bracket 102 was installed in the path 10 1a, slipper bracket 102 still can extend in order to be connected to door from rail bed 101.

According to embodiments of the invention, fluid actuator 103 also is connected to rail bed 101.According to illustrated embodiment, fluid actuator 103 comprises cylinder 106 and piston rod 206 (referring to Fig. 2 to Fig. 5).Piston rod 206 can be connected to carriage 102.In the illustrated embodiment, piston rod 206 is connected to carriage 102 via support 107, but can use other coupling method.According to embodiments of the invention, piston rod 206 can move in cylinder 106 and extend from cylinder 106.Piston rod 206 can be connected to the piston (not shown) that is positioned at cylinder 106, and piston is divided into two fluid chamber with cylinder 106, and is such as known in the art.

According to embodiments of the invention, fluid actuator 103 can comprise damped cylinder, and wherein the motion of carriage is damped because piston moves in cylinder 106.Damped cylinder is well known in the art, and can use choke valve for example or pressure regulator to limit fluid supply and/or discharge in the chamber of cylinder.In the illustrated embodiment, fluid actuator 103 comprises adjustable joint choke valve 114, and adjustable joint choke valve 114 can limit outlet opening, thus the motion of damping piston-rod 206.Therefore, when applying given force to piston rod 206, the speed that piston rod 206 can move is carried out damping.Can be from exterior reservoir to fluid actuator 103 provide damper fluid (referring to Fig. 6).Alternatively, fluid actuator 103 can comprise self-supporting damped cylinder, and the fluid that wherein leaves a chamber directly is fed to another chamber, and does not need exterior reservoir.Comprise among the embodiment of damped cylinder at fluid actuator 103, can manually or use other external force to make a motion, and movement velocity can be come damping by fluid actuator 103.For example, the user can manually open door, and fluid actuator 103 can limit opening speed, to prevent from damaging door system 100.Retrieval system 104 can make door turn back to fastening position then, and fluid actuator 103 closing velocity of control gate again.

According to another embodiment of the present invention, fluid actuator 103 can be used for making carriage 102 motions.For example, can be to cylinder 106 supplied with pressurised fluid supplies (gas or liquid), in order to piston rod 206 is actuated into the second place from primary importance.Be connected to via support 107 under the state of carriage 102 at piston rod 206, the motion of piston rod 206 also will make carriage 102 motions, and therefore make door move to the second place from primary importance.

According to embodiments of the invention, door system 100 comprises that also door returns assembly 104.According to embodiments of the invention, door returns assembly 104 and can comprise drag-line 108, cylinder 109 and be positioned at cylinder 109 and be connected to the return spring (not shown) of drag-line 108.In the embodiment shown in fig. 1, the support 107 that piston rod 206 is connected on the carriage 102 also is connected to the drag-line 108 that door returns assembly 104.Drag-line 108 can be connected to support 107 at first end, and is connected to and is positioned at door and returns the return spring (not shown) of the cylinder 109 of assembly 104.Pulley 110 can be provided, and drag-line 108 can twine to change direction around pulley 110 before entering cylinder 109.As can be appreciated, return spring can provide the biasing force of substantial constant at drag-line 108, spurs supports 107 with the direction along arrow 111 towards brake assemblies 105.Therefore, do not applying at carriage 102 under the situation of power via fluid actuator 103 or user, carriage 102 and therefore door be maintained in its closed position (position shown in Figure 1) by drag-line 108 and return spring with predetermined force.

According to embodiments of the invention, door system 100 also comprises brake assemblies 105.According to illustrated embodiment, brake assemblies 105 is connected to rail bed 101 near fluid actuator 103.In certain embodiments, as being connected to replenishing or substituting of rail bed 101, brake assemblies 105 can be connected to fluid actuator 103.Therefore, when piston rod 206 and support 107 moved along with door, brake assemblies 105 kept static basically.Therefore can provide brake assemblies 105 to stop piston rod 206 and stop carriage 102 to be closed in the time of scheduled volume.Brake assemblies 105 can comprise shell 112.Shell 112 can comprise part that can be removed 113.Part that can be removed 113 can allow to enter the inside of shell 112.Part that can be removed 113 can use machanical fastener, adhesive etc. to remain on the appropriate location.Part that can be removed 113 can comprise electrical fitting 114, to communicate by letter to the electronic module power supply and/or with for example external device (ED) such as computer or controller (not shown).

Fig. 2 shows the vertical view of brake assemblies 105, has wherein removed part that can be removed 113 so that the internal part of brake assemblies 105 to be shown.In Fig. 2, also show piston rod 206.According to embodiments of the invention, piston rod 206 extends through brake assemblies 105.In Fig. 2, can't see support 107, because piston rod 206 extends to the second place that door is opened.The shell 112 of brake assemblies 105 comprises chamber 220.According to embodiments of the invention, one or more electromagnet 221 are positioned at chamber 220.Two electromagnet 221 are provided in the illustrated embodiment; But should be realized that brake assemblies 105 can comprise any amount of electromagnet, and the concrete quantity of employed electromagnet should limit the scope of the invention never.

According to embodiments of the invention, one or more electromagnet 221 can move in chamber 220.In the illustrated embodiment, one or more electromagnet 221 can move along the travel direction that is parallel to piston rod 206 in chamber 220, and this direction is illustrated and be parallel to the longitudinal axes L of rail bed 101 by arrow 222.According to embodiments of the invention, one or more electromagnet 221 are configured to contact piston bar 206.For example, when door assembly 100 was in the appropriate location, one or more electromagnet 221 can rest on the piston rod 206.Therefore, in certain embodiments, piston rod 206 can advantageously comprise as shown in drawings smooth basically surface, so that enough surface area power supply magnet 221 contacts to be provided.Should be realized that the present invention should not be limited to direct contact the between one or more electromagnet 221 and the piston rod 206, but the friction of snubber (not shown) to increase or to reduce to be experienced between electromagnet 221 and piston rod 206 can be provided.

In the embodiment shown in Figure 2, piston rod 206 is in extended position, and namely door is opened or is opened at least in part.Therefore, as shown in Figure 2, one or more electromagnet 221 are against the left positioner of chamber 220, thus generation space 223 between first electromagnet in electromagnet 221 and the chamber 220.Space 223 clearly illustrates that one or more electromagnet 221 have the space of motion in chamber 220.Because contacting between piston rod 206 and the one or more electromagnet 221 makes one or more electromagnet 221 move to the left side of chamber 220.When piston rod 206 because door and when more specifically extending owing to the motion of slipper bracket 102, the contact of piston rod 206 between electromagnet 221 makes one or more electromagnet 221 along with piston rod 206 motions, up to the wall of electromagnet 221 contact chambers 220, this prevents the further motion of electromagnet 221.But, because electromagnet 221 also is connected to piston rod 206 non-permanently, so piston rod 206 can further continue motion after the motion at the contact preventing electromagnet 221 with chamber 220.The ratio of the motion of the motion of one or more electromagnet 221 and piston rod 206 depends on multiple factor, comprises that friction factor between electromagnet 221 and the piston rod 206 and electromagnet 221 are perpendicular to the gravity of piston rod 206.As can be appreciated, heavier electromagnet and the light electromagnet that is manufactured from the same material are compared, and will cause more the motion ratio near 1.Can select proportion and the material of electromagnet 221 and piston rod 206, to obtain the desired motion ratio.Equally, support 225 can partly hang electromagnet 221 with the weight of regulating action on piston rod 206.Such as known in the art, friction factor depends on many variablees, comprises that the material, contact surface of two parts is long-pending, temperature etc.Therefore, by being adjusted in the friction of experiencing between electromagnet 221 and the piston rod 206, can be with the motion rate regulation between electromagnet 221 and the piston rod 206 to desired value.

In Fig. 2, also show the 224a of first of proximity transducer 224.The 224a of first is connected to supporting member 225, and supporting member 225 connects two electromagnet 221.The 224a of first of proximity transducer 224 is static basically with respect to one or more electromagnet 221, but can be with respect to chamber 220 motions.Therefore, when one or more electromagnet 221 moved in chamber 220, the 224a of first of proximity transducer 224 also moved.

According to embodiments of the invention, brake assemblies 105 also comprises one or more electrical contacts 226.One or more electrical contacts 226 can for example encourage one or more electromagnet 221.

Fig. 3 shows brake assemblies 105 according to an embodiment of the invention.Part that can be removed 113 is represented in order to internal part is shown with ghost line.According to embodiment shown in Figure 3, brake assemblies 105 also comprises the second portion 224b of proximity transducer 224.The second portion 224b of proximity transducer 224 can be connected to shell 112.In certain embodiments, second portion 224b can be connected to the part that can be removed 113 of shell 112.Therefore in arbitrary embodiment, when one or more electromagnet 221 and when the 224a of first moves chamber 220 in, second portion 224b maintenance is static basically.Proximity transducer 224 can advantageously detect the motion of one or more electromagnet 221 in chamber 220.Proximity transducer is well known in the art, can contact and need not entity for detection of near the existence of object.For example, second portion 224b can detect the existence of the 224a of first.The proximity transducer 224 of Shi Yonging can comprise for example induction type, photoelectric type, magnetic or capacitance type transducers in the present invention.Can use the proximity transducer of other type, the particular type of for example potentiometer, and proximity transducer 224 never should limit the scope of the invention.

According to embodiments of the invention, brake assemblies 105 also comprises circuit 330.In Fig. 3, circuit 330 is expressed as and comprises printed circuit board (PCB) (PCB) 330.Circuit 330 can with electrical contact 114 telecommunications that extend from brake assemblies 105.Therefore, if expectation, circuit 330 can send from the signal of external treatment system and/or from the external treatment system and receive signal.Circuit 330 can also provide signal to one or more electromagnet 221 via electrical contact 226.According to embodiments of the invention, circuit 330 can also carry out telecommunication with proximity transducer 224.Circuit 330 can receive electric power by electrical contact 114 from for example external power source or battery (not shown).Battery can comprise the rechargeable battery that can use dc generator, alternating current generator etc. to recharge, and dc generator, alternating current generator etc. for example can be connected to when piston rod 206 moves with convenient piston rod 206 and generate electricity.

Fig. 4 shows the vertical view of brake assemblies 105 according to another embodiment of the present invention.In the embodiment shown in fig. 4, piston rod 206 is towards primary importance (retracted position) return movement.This motion can be closed the door and causes owing to for example returning assembly 104.Can see support 107 among Fig. 4 now, but omit drag-line 108, in order to the inside of brake assemblies 105 is shown better.

According to embodiments of the invention, as shown in Figure 4, one or more electromagnet 221 move to against the second place on the right side of chamber 220 in chamber 220.The motion of electromagnet 221 produces gap 233 between the left side of one of electromagnet and chamber 220.As can be appreciated, because piston rod 206 is withdrawn into the motion in the cylinder 106, so one or more electromagnet 221 moves to the right side of chamber 220.As discussed above, the wall of chamber 220 prevents that electromagnet 221 motion ground are farther, but piston rod 206 freely slides past electromagnet 221.

Fig. 5 shows the inside of brake assemblies 105, and wherein electromagnet 221 is in position shown in Figure 4.Shell 112 comprises the part that can be removed 113 of shell 112, and part that can be removed 113 is represented with ghost line, in order to the internal part of brake assemblies 105 is shown.As can be being clear that among Fig. 5, electromagnet 221 contact piston bars 206.The 224a of first and second portion 224b that proximity transducer 224 also is shown in Fig. 5 aim at.As can be seen, owing to the withdrawal campaign of electromagnet 221 in response to piston rod 206, make the 224a of first in the motion of the place ahead of second portion 224b.Therefore, proximity transducer 224 can send indication electromagnet 221 return movements to the signal of primary importance to circuit 330.

Fig. 6 shows the door assembly 100 according to another embodiment.Embodiment shown in Figure 6 is similar to embodiment shown in Figure 1, except embodiment shown in Figure 6 also comprises fluid reservoir 660 and valve 661.According to embodiments of the invention, valve 661 optionally provides fluid actuator 103 to be communicated with fluid between the fluid reservoir 660.In the illustrated embodiment, with valve 661 towards the primary importance bias voltage to open fluid communication path.But when receiving signal via circuit 662 from circuit 330, thereby valve 661 cuts out the fluid communication path between fluid actuator 103 and the reservoir 660.Therefore, the fluid in the fluid actuator 103 keeps constant.

According to embodiment shown in Figure 6, one or more electromagnet 221 can be replaced with one or more piston rod contacts (not shown), and it can comprise can be with the parts of the similar shape of the mode contact piston bar 206 similar to previous illustrated embodiment.The piston rod contact can comprise for example plastics or metal dish.The piston rod contact can be as indicated abovely along with piston rod 206 slides together, to activate proximity transducer or deactuate proximity transducer.Difference between electromagnet 221 and the piston rod contact can not be energized to produce magnetic field for the piston rod contact.Therefore, be not such electromagnet that encourages as indicated above, but when activating proximity transducer, circuit 330 can send signal so that valve 661 is actuated into fastening position to valve 661.When shut off valve 661, the fluid in the fluid actuator 103 is captured basically.Under the pressure that captures in actuator, fluid pressure provides counteracting power at piston rod 206, and it is offset by returning the power that assembly 104 provides.Therefore, the pressure of accumulation has stoped the motion of piston rod 206 basically in actuator 103, thereby has stoped the motion of carriage 102, and has therefore stoped the motion of door.

Now the operation of door assembly 100 will be described in conjunction with Fig. 1 to Fig. 6.Illustrated as mentioned, slipper bracket 102 can slide into the second place from primary importance on being installed in rail bed 101 time.Carriage 102 can move by the external force that is applied on the door, and for example the user manually opens door.Alternatively, carriage 102 can by to fluid actuator 103 supplied with pressurised fluid so that piston rod 206 elongation move.When carriage 102 motions, piston rod 206 will be owing to also will move to the second place from primary importance via support 107 connections.The motion of piston rod 206 makes one or more electromagnet 221 (or piston contact) move to the second place from primary importance, and as shown in Figure 2 to Figure 3 against the left side of chamber 220.As in Fig. 3 as can be seen, the motion of electromagnet 221 is by proximity transducer 224 sensings, wherein the 224a of first no longer aims at second portion 224b.

In case removed by the user or by fluid actuator 103 and acted on external force on the door, returned assembly 104 and just provide biasing force at piston rod 206 and carriage 102, so that two parts are all towards the primary importance return movement.The preset distance in case piston rod 206 and carriage 102 have moved, one or more electromagnet 221 just move to primary importance (left side of chamber 220 as shown in Figures 2 and 3 is to Fig. 4 and right side shown in Figure 5) from the second place.According to an embodiment, the preset distance of piston rod 206 can comprise relative small distance, for example 3mm (0.12 inch).But as discussed above, this distance can be determined by the size of the friction factor between weight, electromagnet 221 and the piston rod 206 of electromagnet 221, chamber 220 and concrete size and the sensitivity of proximity transducer 224.For example, when piston rod 206 moves to the second place from primary importance, bigger chamber 220 will allow the bigger distance of electromagnet 221 motions.Therefore, piston rod 206 will need the bigger distance of moving, so that electromagnet 221 turns back to its primary importance, thereby the 224a of first of proximity transducer 224 be aimed at second portion 224b.

According to embodiments of the invention, moved and got back to primary importance against the right side of chamber 220 in case proximity transducer 224 senses electromagnet 221, proximity transducer 224 just can send signals to circuit 330 activate brake assemblies 105.In one embodiment, circuit 330 can encourage one or more electromagnet 221 in the time of scheduled volume then.Excitation electromagnet 221 induced fields.According to embodiments of the invention, piston rod 206 comprises magnetic material, attracted to one or more electromagnet 221 thus when being energized.Attraction between electromagnet 221 and the piston rod 206 can prevent piston rod 206 and carriage basically with respect to one or more electromagnet 221 motions, thereby has stoped carriage 102 and door further to be closed.According to embodiments of the invention, circuit 330 can encourage electromagnet 221 in the time of scheduled volume, thereby stops the door motion in the time of scheduled volume.The scheduled time can be determined by the user, and therefore can use computer or other device of communicating by letter with electrical contact 114 is regulated, and perhaps can be stored in the circuit 330.When electromagnet 221 is removed excitation, release plunger bar 206 and return assembly 104 and continue to close the door.

According to another embodiment of the present invention, in case proximity transducer 224 sends signal to circuit 330, circuit 330 just can activate brake assemblies 105 by activated valve 661.As discussed above, activated valve 661 has been sealed the fluid communication path between fluid actuator 103 and the fluid reservoir 660 basically.Closed fluid path makes the pressure in the fluid actuator 103 raise, thereby prevents that piston rod and carriage from further moving towards fastening position.Circuit 330 can be in the time of scheduled volume activated valve 661.When deactuate valve 661, the fluid communication path between fluid actuator 103 and the fluid reservoir 660 is opened again, continues to move along closing direction to allow piston rod 206 and carriage 102.

As can be appreciated, piston rod 206 does not need to extend fully so that brake assemblies 105 engages.Piston rod 206 but only need make electromagnet 221 return movements against the left side of chamber 220 towards second place motion preset distance.If expectation, this motion will be by proximity transducer 224 sensings, and one or more electromagnet 221 are removed excitation with release plunger bar 206, thereby allow door to open fully.Piston rod 206 towards primary importance return movement preset distance will make electromagnet 221 again return movement to Fig. 4 and position shown in Figure 5, to trigger proximity transducer 224 again, thereby send signal with excitation electromagnet 221 or activated valve 661 to circuit 330, thereby activate brake assemblies 105 again.

According to alternate embodiment, circuit 330 can activate brake assemblies 105 according to the signal that is received by electrical contact 114, rather than activates brake assemblies 105 based on the signal that receives from proximity transducer 224.For example, user or operator can press danger button, and this for example sends signal to circuit 330 and activates brake assemblies 105, thereby make the door stop motion of closing.As discussed above, the actuating of brake assemblies 105 can encourage one or more electromagnet 221 or activated valve 661.

As indicated above the invention provides a kind of door system that can prevent the brake assemblies that door is closed at any desired locations that has.Can prevent that door from closing in the time of scheduled volume, thereby allow process person or user to pass through the doorway safely.Advantageously, door system of the present invention do not require the user by the time provide continuous tensile force at door.In addition, in order to activate brake assemblies, the present invention does not require door is opened fully.But in case any position of door between fully open position and complete fastening position begins to close, just can activate brake assemblies.

The detailed description of above-described embodiment is not the detailed description of all embodiment within the scope of the invention of expecting of inventor.In fact, those skilled in the art will recognize that some element of above-described embodiment can differently make up or eliminate to form further embodiment, and these further embodiment drop in scope of the present invention and the instruction.Will be obvious that also that for those skilled in the art above-described embodiment can make up to be formed on the additional embodiments in scope of the present invention and the instruction in whole or in part.

Therefore, although described specific embodiments of the invention and example for exemplary purpose in this article, can carry out the various changes that are equal within the scope of the invention, those skilled in the relevant art will be familiar with this point.The instruction that this paper provides can be applied to other brakes, and is not only applicable to above describe and embodiment illustrated in the accompanying drawings.Thereby scope of the present invention should be indicated in the appended claims.

Claims

1. a door system (100) comprising:

Rail bed (101);

Carriage (102) is installed in that described rail bed (101) goes up and can be along the longitudinal axis motion of described rail bed (101), and described carriage (102) is suitable for being connected to door;

Fluid actuator (103) has cylinder (106) and is connected to described rail bed (101), and comprises the piston rod (206) that extends and be connected to described carriage (102) from described cylinder (106);

Return assembly (104), be connected to described carriage (102) and provide biasing force along first direction at described carriage (102) and described piston rod (206); And

Brake assemblies (105), be connected to described rail bed (101), and when activateding, described return assembly (104) and on described piston rod (206) and described carriage (102), side by side provide biasing force in, this brake assemblies (105) prevents basically that in the time of scheduled volume described piston rod (206) and described carriage (102) from moving along described first direction.

2. door system according to claim 1 (100), wherein, described brake assemblies (105) comprising:

Limit the shell (112) of chamber (220); And

One or more electromagnet (221), be positioned at described chamber (220), and be configured to magnetically attract described piston rod (206) when being energized when described one or more electromagnet (221), move with respect to described one or more electromagnet (221) to prevent described piston rod (206) and described carriage (102).

3. door system according to claim 2 (100), wherein, described brake assemblies (105) also comprises proximity transducer (224) that described brake assemblies (105) is activated, and this proximity transducer (224) has the first (224a) that is connected to described one or more electromagnet (221) and the second portion (224b) that is connected to described shell (112).

4. door system according to claim 3 (100) also comprises circuit (330), this circuit (330) be positioned at described shell (112) and with described one or more electromagnet (221) and described proximity transducer (224) telecommunication.

5. door system according to claim 2 (100), wherein, described one or more electromagnet (221) can move between the inherent primary importance of described chamber (220) and the second place.

6. door system according to claim 2 (100), wherein, described piston rod (206) extends through described shell (112) and contacts described one or more electromagnet (221).

7. door system according to claim 1 (100) also comprises:

Valve (661) optionally provides described fluid actuator (103) to be communicated with fluid between the fluid reservoir (660);

Wherein said brake assemblies (105) comprising:

Proximity transducer (224); And

Circuit (330), with described proximity transducer (224) and described valve (661) telecommunication, and be suitable for activating described valve (661) in the time of scheduled volume, be communicated with fluid between the described fluid reservoir (660) to seal described fluid actuator (103) basically.

8. door system according to claim 1 (100), wherein, the described assembly (104) that returns comprises the cylinder (109) that is connected to described rail bed (101) and the drag-line (108) that is connected to described carriage (102).

9. one kind is used for method that door system is braked, this door system comprises rail bed, carriage and fluid actuator, described carriage is installed on the described rail bed and is configured to and moves along the longitudinal axis of described rail bed, described carriage is suitable for being connected to door, described fluid actuator is connected to described rail bed and comprises the piston rod that is connected to described carriage, said method comprising the steps of:

Provide biasing force along first direction at described carriage and described piston rod; And

Brake assemblies is activated, to continue when described carriage and described piston rod provide biasing force, preventing that in the time of scheduled volume described piston rod and described carriage from moving along described first direction.

10. method according to claim 9, wherein use the step of described brake assemblies to comprise: to encourage one or more electromagnet, described piston rod magnetically being attracted described one or more electromagnet, thereby prevent the further motion of described piston rod and described carriage.

11. method according to claim 10 is further comprising the steps of: after the time of scheduled volume, described one or more electromagnet are removed excitation, continue to move along described first direction to allow described piston rod and described carriage.

12. method according to claim 9 wherein uses the step of described brake assemblies to comprise:

Valve is actuated into primary importance, closing the fluid communication path between described fluid actuator and the fluid reservoir, thereby prevents that described piston rod and described carriage are towards the further motion of described primary importance.

13. method according to claim 12, further comprising the steps of: as after the time of scheduled volume, described valve actuating to be turned back to the second place, opening the fluid communication path between described fluid actuator and the described fluid reservoir, thereby allow described piston rod and described carriage to continue to move along described first direction.

14. method according to claim 12 is further comprising the steps of: determine that described piston rod and described carriage have moved threshold distance so that described brake assemblies is activated.