DE102012014302B4 - Door actuator - Google Patents

Abstract

A door operating device for the door of a vehicle, in particular a railway, with a rotatable drive spindle (14), with which at least one output member (15a, 15b) coupled or coupleable to the door (2) is linearly movable in engagement with one at an end portion of the vehicle Drive spindle (14) arranged electric drive motor (22) for generating a rotational movement of the drive spindle (14), and with an also at an end portion of the drive spindle (14) arranged electromechanical parking brake (25) for temporarily blocking the rotational movement of the drive spindle (14), characterized in that the drive motor (22) and the parking brake (25) are arranged on one and the same end region (17) of the drive spindle (14) and combined to form a structural unit in the form of a drive and brake unit (32).

Description

The invention relates to a door operating device for the door of a vehicle, in particular a railway, with a rotatable drive spindle, with the at least one coupled or couplable with the door output member is linearly movable engaged with an arranged at an end portion of the drive spindle electric drive motor for generating a Rotary movement of the drive spindle, and with a likewise arranged on an end portion of the drive spindle electromechanical parking brake for temporarily blocking the rotational movement of the drive spindle.

One from the WO 01/69025 A1 Known door operating device of this type includes a drive spindle with two opposing threaded sections, at one end of a drive motor and at the other end an electromechanical parking brake is arranged. With each threaded portion is an output member is engaged, which is connected to the door of a double-leaf sliding door. By operating the drive motor, the drive spindle can be set in rotation, so that the associated door is either opened or closed by simultaneous, opposite movement of the door leaves. With the help of the parking brake, the drive spindle can be temporarily locked against rotation, in particular to prevent improper opening of the door. This results in a safety aspect when using the door operating device in conjunction with the door of a railway, such as a subway or light rail.

Especially in the conversion of older railways to more modern door actuation systems is due to the local conditions of the railroad cars to be converted usually faced with spatial restrictions. Not infrequently, the wagons must therefore be extensively structurally changed to install the new door operator. This is associated with a great deal of time and money.

From the DE 602 01 003 T2 a door drive is known in which both a drive motor and a coupling device are arranged at one and the same end region of a drive spindle, wherein the coupling device serves to drively connect the drive motor with the drive spindle.

The invention has for its object to provide a door operating device with which equip vehicles and especially railways even in adverse space conditions time-saving and cost-effective and in particular can be retrofitted.

To achieve this object is provided in connection with the features mentioned that the drive motor and the parking brake are arranged on one and the same end portion of the drive spindle and combined to form a unit in the form of a drive and brake unit.

In this way, the drive and brake components of the door operating device, which as a rule occupy a not insignificant installation space, are concentrated on one and the same end region of the drive spindle. This reduces the necessary installation space at the opposite end of the drive spindle. Often, in the case of railways, the spatial conditions in the area of a door are designed in such a way that limited space is available on one side, but a relatively large amount of installation space is available on the opposite side. In all these cases, the door operating device according to the invention can now be conveniently installed with such an orientation that the drive motor and the parking brake are in the less spatially restricted area, while the opposite end area of the drive spindle comes to rest where the installation conditions are rather limited. It is therefore very flexible installation and saves costly structural changes to the railway car itself. Another advantage of the focus of the drive motor and parking brake on the same end of the drive spindle is the fact that concentrate the electrical connection measures in a narrow area and thus the usually necessary electrical wiring is greatly simplified. Characterized in that the drive motor and the parking brake are combined to form a unit called drive and brake unit, this drive and brake unit is characterized by a very compact design and is particularly easy to install.

Advantageous developments of the invention will become apparent from the dependent claims.

Preferably, the order of the arrangement of parking brake and drive motor is selected so that the parking brake is arranged on the drive spindle axially facing away from the back of the drive motor. In this context, the drive motor expediently has a continuous motor shaft which cooperates with the drive spindle at one end and with the parking brake at the other end.

Preferably, the drive and brake unit also has a reduction gear, which is effective between the drive motor and the drive spindle and which serves in particular to reduce the rotational speed of the drive spindle with respect to the rotational speed of the drive motor and at the same time to increase the torque for displacement of the driven member coupled to a door. The use of the reduction gear also allows the use of low-cost, usually very high-speed electric drive motors.

Preferably, the drive motor sits axially between on the one hand the parking brake and on the other hand, the reduction gear. All three components are expediently combined to form a self-supporting structural unit in the form of the drive and brake unit.

The door operating device expediently contains a support structure to which the drive and brake unit can be fixed or fixed in a preferably releasable manner by means of at least one fastening interface. Each attachment interface is expediently part of a mounted on the drive and brake unit mounting base, which may for example be designed in the form of an angled sheet metal part. The mounting base is preferably arranged between the drive motor and the parking brake and protrudes laterally away from the drive and brake unit with a portion having the at least one mounting interface.

Overall, the door operating device is expediently designed as a self-supporting structural unit, which is easy. as a whole can be attached to the vehicle to be equipped with it. For attachment, this self-supporting assembly preferably includes a suitable support structure which is equipped with a sufficient number of mounting interfaces and to which the drive spindle, the drive motor, the parking brake and possibly also the reduction gear are mounted. When the drive motor and the parking brake are combined to form a drive and brake unit, this drive and brake unit is expediently attached with its at least one attachment interface to the support structure of the door operating device. The support structure is preferably formed as a support plate on which a plate surface, the aforementioned components are attached.

The support structure of the door actuating device is expediently equipped with at least one door guide rail extending parallel to the drive spindle, on which at least one guide slide is mounted so as to be longitudinally displaceable, which can be coupled or coupled with the component of the associated vehicle door to be actuated. At least one of these guide carriages is movably coupled to a drive member which is engaged with the drive spindle and performs linear motion upon rotational movement of the drive spindle. In this way, the associated guide carriage is also moved during the linear movement of the output member.

The electromechanical parking brake allows electrically or electronically controlled operation depending on the position of the door to be operated. The braking function is controlled in particular by using a suitable position detection device, wherein the position detection device preferably interrogates the position of at least one output element which is in engagement with the drive spindle. The electromechanical parking brake is in particular electrically controllable in such a way that it always assumes a blocking position preventing the rotational movement of the drive spindle when the door is open or closed. The activation and deactivation of the electromechanical parking brake is expediently in coordination with the activation and deactivation of the electric drive motor.

In order to be able to open the assigned door manually and in particular to postpone in an emergency, the parking brake is expediently equipped with a manually operated mechanical emergency release. With it, the parking brake can be deactivated at any time without electrical energy so that the drive spindle is released to perform a rotational movement. Thus, the at least one driven member coupled to a component of a door can be displaced along the drive spindle with simultaneous rotation of the drive spindle. Persons inside a train wagon are therefore able to open the door without help from an emergency.

The parking brake is expediently equipped with a movable brake member which can be positioned either in a blocking position blocking the rotational movement of the drive spindle or in a release position enabling the rotational movement of the drive spindle. Preferably, the brake member is biased by spring means in the blocking position, so that the door operation is blocked even without electrical energy. To release the drive spindle, the emergency unlocking device is equipped with at least one manual operating means, the manual actuation of which causes a displacement of the braking member by overcoming the spring force of the spring means from the blocking position into the release position. At least one manual actuating means is preferably designed and arranged so that it is inside a Railroad cars is always easily accessible. Preferably, at least one further manual operating means is designed and arranged so that it is accessible from outside a railway carriage, in order to allow an emergency opening of the door by rescue personnel from the outside.

Preferably, at least one manual operating means is equipped with a cable, which can be installed optimally in the vehicle due to its flexibility. Preferably, there are two manual actuators which act on the same brake member and which have a redundant function, such that using any manual operating means alone, the emergency unlocking is feasible.

A particularly compact design of the parking brake is obtained when the emergency unlocking device has a pivotally mounted two-armed lever, which is coupled on the one hand with a manual actuating means and on the other hand with the brake member. With such a lever, the balance of power to operate the emergency release can be optimally adjusted.

Between the reversing lever and the brake member a linearly displaceably mounted coupling pin is expediently incorporated. It allows a linear actuation of the brake member despite pivotable lever when actuated.

The working stroke of the braking member is usually very small to ensure optimal response. In an emergency operation, however, this short working stroke results in an indifferent operating feeling. It is therefore advantageous if measures are taken which increase the actuating travel of the manual actuating means without influencing the actual working stroke of the braking member. This effect is achieved, in particular, by interposing into the connection between the manual actuating means and the braking member a spring device permitting limited relative movement between the manual operating means and the braking member. Upon activation of the manual actuating means thus initially the spring means is tensioned, without causing an actuation of the brake member. Only when the spring device has been tensioned by activation of the manual operating means to a certain extent, the brake member is taken. This "certain degree" can be achieved depending on the design of the spring device when the spring device is stretched to the maximum possible extent or even before, ie only partially tensioned spring device. The spring device is in particular a compression spring device which is compressed during clamping, for example in the form of a helical spring.

The drive spindle is expediently designed so that it has two axially successively arranged drive thread sections, one of which is a right-hand thread and the other is a left-hand thread. At least one output member is in threaded engagement with each drive threaded portion, so that the output members, depending on the direction of rotation of the drive spindle perform a linear movement approaching one another or a linear movement that is distanced from one another. The output members which cooperate with the different drive thread sections are expediently coupled to different door wings of a vehicle door to be pushed.

The invention will be explained in more detail with reference to the accompanying drawings. In this show:

1 a preferred embodiment of the door actuating device according to the invention in a perspective view,

2 the door actuator off 1 in a front view,

3 the in 1 dash-dotted framed end portion III of the door operator in an enlarged view,

4 equipped with the drive motor and the parking brake end portion of the door operating device in a longitudinal section along section line IV-IV,

5 an enlarged section of the picture in 4 in the field of parking brake, and

6 the equipped with the parking brake end portion of the door operating device in a longitudinal section in a respect 4 and 5 90 ° rotated cutting plane.

From the drawing is a total with reference numeral 1 designated door operating device, which is designed for installation in a vehicle, in particular a railway, and with the help of which in 2 dash-dotted line indicated door 2 of the vehicle in question can be actuated for opening and closing.

The door operator 1 is particularly suitable for operating a two-leaf door, with two door leaves 2a . 2 B equipped, which are relative to each other in opposite directions movable and in particular displaced. In the closed Condition of the door 2 are the two doors 2a . 2 B approached to each other and moved apart in the open state of the door.

The door operator 1 is suitably designed as a self-supporting unit that can be mounted as a unit on the vehicle to be equipped with it. In this way, the door operating device 1 be mounted very quickly and it is unnecessary during assembly, the relative adjustment between the individual components of the door operating device 1 and the vehicle.

For attachment to the associated vehicle, which is in particular a railway and in this case in particular a subway, is the door operating device 1 with a preferred as a support plate 3a trained support structure 3 equipped, which preferably consists of metal and in particular of steel. At this support structure 3 There are several attachment interfaces 4 , under whose participation the support structure 3 and hence the entire door operating device 1 can be attached to an adapted mounting interface of the vehicle.

The preferred plate-like support structure 3 has a front side 5 and a reverse side opposite thereto 6 , The mounting on the vehicle is done with the back 6 ahead. All other relevant components of the door operator 1 are preferred at the front 5 the supporting structure 3 appropriate.

The door operator 1 has a total of a longitudinal shape with a longitudinal axis 7 , In the vehicle-mounted condition of use is the longitudinal axis 7 aligned horizontally.

The door operator 1 is mounted in particular above a wall opening of the car of a vehicle, which by means of the door 2 optionally releasable or lockable.

On the support structure 3 , especially at the bottom of the front 5 is expediently a in the axial direction of the longitudinal axis 7 extending door guide rail 8th assembled. At the door guide rail 8th are two pairs of guide carriages 12 . 12a ; 13 . 13a independently linearly displaceable mounted, which are each equipped with fastening means to which one of the two moving door 2a . 2 B can be fixed.

The one guide carriage each 12 . 13 Each pair of guide carriages acts as a drive carriage. In him, a driving force is initiated to the door operation, the linear movement along the door guide rail 8th entails. The other guide carriage acts as auxiliary slide 12a . 13a due to the coupling to the door leaf 2a . 2 B is taken along and the suspension of the relevant door leaf 2a . 2 B stabilized.

The driving force that causes the displacement movement is experienced by the drive carriages 12 . 13 from a drive spindle 14 attached to the support structure 3 is rotatably mounted, wherein they are in the axial direction of the longitudinal axis 7 extends. The drive spindle 14 is parallel to the door guide rail 8th aligned.

The drive spindle 14 has two axially successively arranged drive thread sections 14a . 14b , The same are formed in opposite directions, so in one case have a left-hand thread and in the other case a right-hand thread. The thread pitch is preferably relatively large.

With each drive thread section 14a . 14b is one of two output links 15a . 15b in the manner of a screw engaged. The output members 15a . 15b are in the axial direction of the longitudinal axis 7 movable, but at the same time twist-proof. Consequently, each output member leads 15a . 15b a direction indicated by a double arrow linear output movement 16a . 16b in the longitudinal direction of the drive spindle 14 off when the drive spindle 14 rotated about its longitudinal axis. Depending on the direction of rotation of the drive spindle 14 remove the two output members 15a . 15b from each other or approach each other.

The two output members 15a . 15b are each with one of the two drive carriages 12 . 13 mechanically connected such that the respective drive carriage 12 . 13 the linear output movement 16a . 16b of the driven member coupled with it 15a . 15b participates. This results in the output movement 16a . 16b the output members 15a . 15b the opening and closing of the door 2 required linear movement of the guide carriage 12 . 12a ; 13 . 13a , By their coupling with the drive carriages 12 . 13 experience the output members 15a . 15b their for the production of the output movement 16a . 16b required rotation lock.

In an embodiment not shown, the door operating device 1 formed to actuate only a single door component and in this case contains only a single drive threaded portion, which consistently has the same thread direction. With such a door operating device 1 For example, it is possible to move a single door leaf of a door.

The drive spindle 14 has two opposite, first and second end portions 17 . 18 , Each of these two end areas 17 . 18 is expediently a bearing block 21 assigned to the the front 5 the supporting structure 3 is attached and in which the drive spindle 14 is rotatably mounted. If necessary, another bearing block in the longitudinal center of the drive spindle 14 be provided to the bending stress of the drive spindle 14 to be kept as low as possible.

The door operator 1 contains an electric drive motor 22 for rotationally driving the drive spindle 14 , This drive motor 22 is at the first end area 17 the drive spindle 14 arranged. The drive motor 22 has a motor housing 23 , on the outside of which is an electromechanical interface 24 is arranged, over which the drive motor 22 is supplied with the necessary drive power and required for its operation electrical control signals. The drive motor 22 can be operated either with CCW or clockwise to the drive spindle 14 either left-handed or right-handed driving.

The electric drive motor is in particular a DC electric motor.

At the same, first end 17 the drive spindle 14 at which the electric drive motor 22 is arranged, there is also an electromechanical parking brake 25 , with the rotational movement of the drive spindle 14 temporarily blocked as needed. The blocking is expediently carried out at least in the closed position of the door 2 , but preferably also in its open position.

The parking brake 25 has a brake housing 26 , on the outside of which is an electromechanical interface 27 is arranged, over which the parking brake 25 to specify their operating state is electrically controlled.

The door actuating device is preferred 1 with a position detection device for detecting the relevant operating positions of at least one output member 15a . 15b and / or at least one guide carriage 12 . 12a ; 13 . 13a equipped, based on the respectively determined position signal, the electrical activation of the parking brake 25 is controlled.

Due to the fact that the electric drive motor 22 and the electromechanical parking brake 25 at one and the same end area 17 the drive spindle 14 a compact concentration of these components takes place in a confined space. This facilitates on-site installation on the vehicle to be equipped therewith. In addition, the necessary electromechanical interfaces 24 . 27 be arranged close to each other, which simplifies the electrical connection measures. In addition, this can be the opposite second end 18 the drive spindle 14 free ends, without having to be equipped with a voluminous electromechanical component. This favors the installation of the door operating device 1 in cases where the vehicle in the installation space in an end portion of the door operating device 1 is very limited.

The drive motor 22 and the parking brake 25 are expediently to a drive and brake unit 32 designated unit summarized. This uniformly manageable drive and brake unit 32 is for example by means of a mounting base 33 on the supporting structure 3 assembled. In the embodiment of this mounting base 33 the only fastener with which the drive and brake unit 32 directly on the support structure 3 is attached.

The mounting base 33 contains one or more attachment interfaces 34 , which are each suitable for attachment to the support structure 3 by means of at least one fastening screw 35 make.

The parking brake is preferred 25 on the drive spindle axially facing away from the back of the drive motor 22 arranged. In the embodiment, the parking brake 25 with its brake housing 26 to one of the drive spindle 14 axially facing back end face 28 of the motor housing 23 flanged. The mounting base 33 is in the embodiment space-saving axially between the brake housing 26 and the motor housing 23 incorporated.

In the embodiment, the parking brake cooperates 25 not directly with the drive spindle 14 , but with the rotatably driven motor shaft 36 of the drive motor 22 , in turn, with the drive spindle 14 is in rotary drive connection. The motor shaft 36 has an example of a on the back face 28 from the motor housing 23 outstanding and in the brake housing 26 for cooperation there with the parking brake 25 protruding rear end portion 37 , At the opposite front end face 42 of the motor housing 23 protrudes the motor shaft 33 with a front end portion 38 out with the in 4 only dash-dot indicated drive spindle 14 is in rotary drive connection.

The drive and brake unit 32 As a further component expediently also contains a reduction gear 43 attached to the front face 42 of the motor housing 23 is grown. The reduction gear 43 contains an internal gear unit 44 , In particular a planetary gear, the input side with the motor shaft 36 is coupled and via a leaking at its front transmission output shaft 45 features. Exemplary engages the motor shaft 36 with one at the front of the motor housing 23 outstanding front end section 38 in the reduction gear 43 into it.

The gear unit 44 is specifically designed so that the speed of the transmission output shaft 45 less than that of the motor shaft 36 ,

The transmission output shaft 45 is finally about a shaft coupling 46 , which is designed for example as a dog clutch, with the first end portion 17 the drive spindle 14 rotationally connected.

The reduction gear 43 can also be omitted. The motor shaft 36 is then over the shaft coupling 46 directly with the drive spindle 14 connected.

The parking brake 25 contains a brake disc 47 whose two facing away from each other disc surfaces a first braking surface 48a and a second braking surface 48b form. Every braking surface 48a . 48b is suitably made of a material with a high coefficient of friction. For example, any braking surface 48a . 48b consist of a brake pad or the entire brake disc 47 is made of the material of a brake pad.

The brake disc 47 sits with a central opening 52 rotationally fixed and at the same time axially movable on a hub body 53 , which rotatably on the in the brake housing 26 protruding rear end portion 37 the motor shaft 36 sitting. Alternatively, the brake disc could 47 also directly on the rear end section 37 the motor shaft 36 be arranged rotatably.

The brake disc 47 sits axially between two mutually facing first and second counter-braking surfaces 54a . 54b , The first counter braking surface 54a located on one of the motor shaft 36 interspersed first support body 55 , the embodiment in the embodiment of the brake housing 26 is and on the motor housing 23 stationary supports. The first counter braking surface 54a points axially from the drive spindle 14 path.

The second counter braking surface 54b is from an end face of a preferably also disc-shaped and centrally perforated brake member 56 formed, which is the hub body 53 concentrically encloses. The brake member 56 is with respect to the brake housing 26 rotatably mounted, but can be indicated by double arrows linear working movement 57 in the longitudinal direction of the motor shaft 36 relative to the motor shaft 36 To run.

Inside the brake housing 26 there is another, second support body 58 stationary with respect to the brake housing 26 is arranged and the preferred disc-shaped brake member 56 on the brake disc 47 Flanked axially opposite side. The second support body 58 is expediently by means of fastening screws 62 at which the first counter braking surface 54a having the first support body 55 attached.

Between the second support body 58 and to carry out the work movement 57 axially movable brake member 56 are spring means 63 arranged, which are preferably compression spring means and the brake member 56 constantly in the direction of the brake disc 47 Pretension.

In a blocking position of the brake member 56 becomes the brake member 56 through the spring means 63 so against the brake disc 47 pressed that same with its two braking surfaces 48a . 48b between the two counter-braking surfaces 54a . 54b is firmly clamped and can not turn anymore. This is also the motor shaft 36 prevented from rotating. At the same time this is the with the motor shaft 36 drivingly connected drive spindle 14 non-rotatably blocked.

With the help of a solenoid device 64 the parking brake 25 can the brake member 56 if necessary, overcoming the spring force of the spring means 63 and execution of the work movement 57 be moved from the blocking position to a release position. In this release position, the axial distance between the two counter-braking surfaces 54a . 54b big enough to be non-rotatable with the motor shaft 36 coupled brake disc 47 to allow an unrestricted rotational movement. This also allows the motor shaft 36 and the coupled with this drive spindle 14 rotate.

Exemplary contains the electromagnet device 64 one in the second support body 58 arranged coil unit 65 that have electrical conductors 66 to the electromechanical interface 27 is connected and thereby electrically powered as needed.

The brake member 56 is the coil unit 65 upstream and forms a movable armature of the electromagnetic device 64 , When energizing the coil unit 65 becomes the brake member 56 thus attracted and overcoming the spring means 63 from the brake disc 47 lifted.

In normal operation of the door operator 1 becomes the solenoid device 64 according to the position of the door leaves 2a . 2 B cyclically activated and deactivated to the braking member 56 by the action of the electromagnetic device 64 in either the blocking position or the release position.

To the door 2 in an emergency and also in case of power failure without actuation of the electromagnetic device 64 To be able to open, it is expediently with a manually operated mechanical emergency release 67 fitted.

The emergency unlocking device 67 has at least one hand-operated device 68a . 68b , by its manual operation, the brake member 56 overcoming the spring force of the spring means 63 from the blocking position in the release position is displaced.

In the embodiment, the manual operating means 68a . 68b duplicate to ensure redundancy. Every hand-operated device 68a . 68b allows independent of the other hand-operated device 68b . 68a the manual operation of the emergency release device 67 , There is therefore the possibility of using the manual controls 68a . 68b To lead to different areas in or on the vehicle, so that the emergency release can be made at different locations, for example, on the one hand in the vehicle interior and on the other hand outside of the vehicle.

Every hand-operated device 68a . 68b is preferably as a cable 72 formed, on the one hand with the brake member 56 is drivingly connected and on the other hand conveniently on a handle 73 attacks. In the handle 73 it is for example a knob or a pivot lever. The handle 73 can according to arrow 74 be manually operated to a pulling movement of the cable 72 cause.

The handle 73 opposite end portion of each manual operating means 68a . 68b hereinafter referred to as the coupling section 75 is referred to, engages as an actuating arm 77 designated first lever arm of a two-armed reversing lever 76 on, on a bearing body 78 is supported pivotally. At the bearing body 78 it is preferably a part of the brake housing 26 on which the bearing body 78 with a pivot bearing section 79 supported on the outside. Exemplary is the bearing body 78 from the drive motor 22 axially opposite end wall 83 of the brake housing 26 educated. In this end wall 83 is located outside a centering groove 84 into which the designed as a projection pivot bearing section 79 intervenes.

On the operating arm 77 opposite side of the pivot bearing section 79 contains the lever 76 one as a working arm 85 designated second lever arm. This working arm 85 stands with the brake member 56 in driving connection.

Conveniently, the the lever 76 assigned end wall 83 in the axial direction of the longitudinal axis 7 slidable from a coupling pin 86 interspersed. In the outside of the brake housing 26 lying portion of the coupling bolt 86 is the working arm 85 positive fit, but hung with a certain amount of movement, for what purpose the working arm 85 via a fork-shaped end section 85a features.

The inside of the brake housing 26 lying inner end portion of the coupling pin 86 engages in a double arrow 87a axially movable coupling bracket 87 one with several tie rods 88 is coupled in a manner permitting the transmission of tensile forces. These tie rods 88 , which are formed for example by screws, pass through the second support body 58 and that the second support body 58 flanking brake link 56 in each case linearly displaceable manner. Every tie rod 88 has at its the coupling strap 87 opposite end a support head 89 that is the braking member 56 on the second support body 58 upstream side is located.

For uncontrolled emergency release device 67 take the tie rods 88 from 6 apparent basic position in which the Abstützköpfe 89 from the brake member 56 are spaced so that the brake member 56 unrestricted by the solenoid device 64 is movable.

To make an emergency release, pull on one of the manual actuators 68a . 68b a direction indicated by arrows pivoting movement 92 of the reversing lever 76 evoked so that he moved from an unpivoted position into an in 4 at 93 dash-dotted lines indicated pivoted position is moved.

During the pivoting movement of the lever takes 76 with his working arm 85 the coupling pin 86 with and pulls this one piece from the brake housing 26 out. It will be the coupling pin 86 hinged coupling straps 87 according to arrow 87b taken along, so that also on the coupling bracket 87 supporting tie rods 88 a piece from the second support body 58 be pulled out. This will get the Abstützköpfe 89 for engagement with the brake member 56 and pull the brake link 56 overcoming the spring force of the spring means 63 With. Thus, the brake member 56 by manual activation of the brake disc 47 removed and the locking function of the parking brake 25 canceled.

Conveniently, each hand-operated means 68a . 68b and / or the associated handle 73 locked in the actuated position to maintain the emergency release permanently if necessary.

The lying between the blocking position and the release position stroke of the brake member 56 is very low. It is therefore advantageous if the emergency unlocking device 67 Means having an extension of the actuating travel of the manual actuating means 68a . 68b cause, so to speak, an extended working stroke of the brake member 56 is simulated.

The exemplary parking brake 25 is equipped with such means here per Handbetätigungsmitel 68a . 68b a spring device 94 included between the bellcrank 76 and the relevant hand-operated device 68a . 68b is interposed. There is a series connection here.

In the embodiment, the spring device 94 one at the back of the operating arm 77 supporting first end portion 96 and has one from the back 95 spaced second end portion 97 , The manual actuator 68a . 68b interspersed with its coupling section 75 the actuating arm 77 and then coaxially and the spring device 94 , wherein the coupling section 75 at the second end portion 97 the spring device 94 is fixed.

Will be in the manual control 68a . 68b Initiated a pulling actuation force, initially, without pivoting of the reversing lever 76 , Compressing the spring device 94 until all spring coils abut each other. The spring device 94 is then compressed "on block". This compressed state of the spring device 94 is in 5 at 98 indicated by dashed lines. Only when this compressed state 98 is reached, the spring device acts 94 axially as a rigid body and directs the at the second end portion 97 initiated pulling force directly into the actuating arm 77 one, so that then the bellcrank 76 the pivoting movement 92 performs.

To ensure this function, the spring force of the spring device 94 less than the spring force of the spring means 63 ,

In an alternative design, the spring device has 94 over a larger spring force, so that the lever 76 already operated before the spring device 94 is completely compressed.

Each spring device is preferred 94 from a support tube 99 surrounded, the unintentional lateral buckling of the spring device 94 prevented during the compression process. The support tube 99 also prevents contamination of the spring device 94 ,

Claims (18)

Door operating device for the door of a vehicle, in particular a railway, with a rotatable drive spindle ( 14 ), with at least one door ( 2 ) coupled or couplable output member ( 15a . 15b ) is linearly movable, with one at an end portion of the drive spindle ( 14 ) arranged electric drive motor ( 22 ) for generating a rotational movement of the drive spindle ( 14 ), and with a likewise at an end region of the drive spindle ( 14 ) arranged electromechanical parking brake ( 25 ) for temporarily blocking the rotational movement of the drive spindle ( 14 ), characterized in that the drive motor ( 22 ) and the parking brake ( 25 ) at one and the same end region ( 17 ) of the drive spindle ( 14 ) and to a structural unit in the form of a drive and brake unit ( 32 ) are summarized. Door operating device according to claim 1, characterized in that the parking brake ( 25 ) on the drive spindle ( 14 ) axially remote rear side of the drive motor ( 22 ) is arranged. Door operating device according to claim 1 or 2, characterized in that the drive and brake unit ( 32 ) also a reduction gear ( 43 ), which between the drive motor ( 22 ) and the drive spindle ( 14 ) is turned on. Door operating device according to claim 3, characterized in that the drive motor ( 22 ) axially between the parking brake ( 25 ) and the reduction gear ( 43 ) is arranged. Door operating device according to one of claims 1 to 4, characterized in that the drive and brake unit ( 32 ) with at least one attachment interface ( 34 ) for attachment to a support structure ( 3 ) Is provided. Door operating device according to claim 5, characterized in that the Mounting interface ( 34 ) as part of a mounting base ( 33 ) is realized. Door operating device according to claim 6, characterized in that the mounting base ( 33 ) between the drive motor ( 22 ) and the parking brake ( 25 ) is incorporated. Door operating device according to one of claims 1 to 7, characterized in that it is formed overall as a self-supporting structural unit, wherein it has at least one drive spindle ( 14 ), the drive motor ( 22 ) and the parking brake ( 25 ) supporting support structure ( 3 ) equipped with mounting interfaces ( 4 ), which is used for unitary fixing of the door operating device ( 1 ) on the vehicle to be equipped therewith, the supporting structure ( 3 ) expediently as a support plate ( 3a ) is trained. Door operating device according to claim 8, characterized in that on the support structure ( 3 ) at least one parallel to the drive spindle ( 14 ) extending door guide rail ( 8th ) is arranged at the at least one with a driven member ( 15a . 15b ) connected and with a door to be operated ( 2 ) coupling guide carriage ( 12 . 12a ; 13 . 13a ) is slidably mounted. Door operating device according to one of claims 1 to 9, characterized in that the parking brake ( 25 ) with a manually operated mechanical emergency release device ( 67 ) Is provided. Door operating device according to claim 10, characterized in that the electromechanical parking brake ( 25 ) for selectively blocking or releasing the rotational movement of the drive spindle ( 14 ) electromechanically in either a blocking position or in a release position positionable brake member ( 56 ) by spring means ( 63 ) is biased in the blocking position, wherein the emergency unlocking device ( 67 ) via at least one manual operating means ( 68a . 68b ), by its manual operation, the brake member ( 56 ) by overcoming the spring force of the spring means ( 63 ) is manually displaced from the blocking position to the release position. Door operating device according to claim 11, characterized in that at least one manual operating means ( 68a . 68b ) a cable ( 72 ) and / or that at least two manual actuators ( 68a . 68b ) with redundant function with the braking member ( 56 ) interact. Door operating device according to claim 11 or 12, characterized in that the emergency unlocking device ( 67 ) a two-armed lever ( 76 ), which is pivotally mounted on a particular of a brake housing ( 26 ) of the parking brake ( 25 ) bearing body ( 78 ) and the one with the manual operating means ( 68a . 68b ) coupled actuating arm ( 77 ) and one with the braking member ( 56 ) coupled working arm ( 85 ) having. Door operating device according to claim 13, characterized in that the working arm ( 85 ) of the pivotable reversing lever ( 76 ) at one with the brake member ( 56 ), with respect to the bearing body ( 78 ) linearly displaceably mounted coupling pin ( 86 ) attacks. Door operating device according to one of claims 11 to 14, characterized in that in the connection between at least one manual operating means ( 68a . 68b ) and the brake member ( 56 ) one for extending the actuating travel of the manual actuating means ( 68a . 68b ) a limited relative movement between the manual actuating means ( 68a . 68b ) and the brake member ( 56 ) enabling spring device ( 94 ) is interposed. Door operating device according to claim 15, characterized in that the spring device ( 94 ) is a compression spring device, which by actuation of the manual actuating means ( 68a . 68b ) initially without entrainment of the brake member ( 56 ) is compressible and after compression, with continued movement of the manual operating means ( 68a . 68b ) a driving of the braking member ( 56 ) causes. Door operating device according to claim 16, characterized in that the spring device ( 94 ) is fully compressible until the mutual abutment of all the relatively movable spring components, before, with continued movement of the manual actuating means ( 68a . 68b ) a driving of the braking member ( 56 ) causes. Door operating device according to one of claims 1 to 17, characterized in that the drive spindle ( 14 ) two axially successively arranged, opposing drive thread sections ( 14a . 14b ), with which in each case at least one output member ( 15a . 15b ), which in each case with one of two oppositely sliding to be operated door wings ( 2a . 2 B ) a door ( 2 ) is connectable.

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