EP1496184B1 - Foot-step safety switch - Google Patents

Abstract

The device has a tread strip (12) and a signal transducer that responds to treading on the tread strip and whose output signal is provided to the door controller to cause the door to be held open or reversed. A front strip profile (8) of elastic material arranged near the edge of the passenger compartment extends over the entire door width in a counter profile (16) of the tread strip and contains a full width signal transducer for door control.

Description

The invention relates to a Fußschutzleiste for an automatic or manually operated door, in particular a public transport, comprising a treadplate and responsive to entering the treadmill signal sensor whose output signal is provided for the door control, which causes an open or reversing the door.

A the features of the preamble of claim 1 having Fußschutzleiste is off DE-U-7 318 999 known.

In public transport vehicles, i. Rail and road vehicles, the entry area must be reliably secured to prevent incidents by closing doors when getting in and out. Therefore, safety devices are prescribed which, when, after a predetermined time interval has elapsed after the door has been opened upon boarding of a passenger, ensure that the time until the door closes is sufficiently prolonged. If the door closes when the passenger arrives, the closing process must be stopped and the door must return to the open position.

As a door-closing safety device, there are often used foot strips that lower somewhat when loaded and then trigger contact. The moving mechanical parts cause wear, the space required for storage and movement is not insignificant and there is always a noise when entering these foot strips.

In many cases, photoelectric sensors are also used, but they can not adequately protect the entry area if the passenger has not yet entered the interior of the vehicle. In particular, moisture and reflection in the case of light barriers can easily cause interference. There are also geometric limitations in the installation of the photoelectric sensors, so that not the entire boarding area can be monitored.

On the inside edges of the finger protection strips are used, which trigger a door reversion signal when slightly pressurized. For older passengers, it may happen that they come in case of contact between door and frame easily to fall.

From the DE 27 12 173 A An electropneumatic safety controller for a door or door operator is known in which a mat is used under which run two compressible, independent air hoses, each connected to a pressure wave switch. The dual design has the purpose to issue a fault message in the event of destruction of an air chamber. In such mats triggering occurs only when a passenger has already entered a piece in the passenger compartment of a vehicle.

At one in the DE 35 41 505 C described pneumatic-electric control for power-operated doors are gas-filled hollow sensor body (usually rubber hoses on the longitudinal edge or treadmills with multiple channels) with compressed gas source, pneumatic-electrical converter and electric signal transmitter and switching element at the output of the safety system for public transport described.

The invention has for its object to provide a safety device that already on entering the front entrance area of public transport another open holding or reversing a closing door triggers.

This object is achieved in a Fußschutzleiste with the features of claim 1. Advantageous developments of the Fußschutzleiste invention are the subject of the dependent claims.

A Fußschutzleiste invention for an automatically or remotely operated door in particular a public transport, thus comprising a tread and a responsive to entering the tread Signalnehmer whose output signal is provided for the door control, which causes an open or reversing (reopening) of the door. A front strip profile of elastic material is arranged in edge or edge proximity of the passenger compartment and extends over the entire door width. The strip profile is provided in a counter profile of the tread bar at the top. In the strip profile is provided over the entire length of an elongated, pressure-responsive signal sensor for the door control.

By the arrangement to the very edge or at the edge of the passenger compartment, a first entry is already detected for example with the toe and the door remains open or does not close, the passenger is not touched by the door. The fact that the strip profile extends over the entire door width, the entire entry area is covered. As a result of the leadership in a mating profile results in a low height of the last profile, which forms no trip-threshold. The small width of the counter profile, however, still leads to no weakening of the material is incorporated in the counter-profile. In addition, the Fußschutzleiste does not extend so far into the passenger compartment in that a door mis-activation is carried out by already boarded passengers.

Is the top of the last profile arched or profiled or ribbing executed, this shape design causes a slip protection. By colored version, a warning for the perception of the footstep can be provided, which is often prescribed as a visual entrance help.

Due to its design, the foot protection strip according to the invention, due to its cost-effective design, is also suitable for retrofitting vehicles already in operation, especially since it is independent of the vehicle type.

The material of the last profile is sufficiently elastic and robust, for example rubber. Due to the elasticity, it is also possible to achieve an additional seal against draft in case of contact with the lower edge of the door.

The application of the Fußschutzleiste invention is mainly public transport in rail and road vehicles. However, the Fußschutzleiste can also be used, for example, to secure elevator doors. It is suitable for all closures of doors, gates, ramps, etc.

Preferably, a parallel rear second strip profile is arranged at a distance from the first strip profile. This results in a double hedge and in particular the different foot positions are fully considered when boarding.

If the vehicle concerned still has steps at the exit, then these can advantageously also be equipped with further foot protection strips.

An embodiment of the Fußschutzleiste invention is pneumatic. Appropriately, the strip profile is designed as a sealed hollow chamber on both sides, into which one end of a hose opens. The hose is connected at the other end to an electropneumatic converter whose output signal the door control is supplied. The hollow chamber is advantageously closed by means of plugs. If someone steps on the strip profile, then its volume changes due to the elasticity of the hollow chamber wall. The resulting surge actuates a pressure switch, the mentioned electropneumatic transducer, and this triggers a switching contact.

During the operation of the Fußschutzleiste a continuous signal must be present. For example, can be closed by a membrane upon pressurization of the hollow chamber, a vent hole to compensate for air pressure fluctuations due to height differences, which is released upon completion of the pressurization. Or at the completion of the bleeding process, the bleed valve remains closed when the switch has been previously actuated.

In an expedient embodiment of the Fußschutzleiste invention with two strips profiles a switch for the signal pickup signal of both strips profiles is provided. In the pneumatic version, the two hoses are then preferably connected by a Y-piece with the electropneumatic valve (pressure wave switch).

Another embodiment of the Fußschutzleiste invention is electrically. Advantageously, two electrical contact strips are arranged in the strip profile, the signal of the door drive circuit is fed. More particularly, the spaced-apart contact strips are compressed by pressure of a person passing on the strip profile person and then trigger like a switch, an electrical signal. A particularly advantageous configuration of the contact strips results when these are rounded in accordance with the strip profile. To enhance the effect, the contact strip may be underlaid in the middle, so that there is a flat support of the two contact strips.

Fig. 1

eine perspektivische Ansicht einer Fahrzeugtürschwelle, deren Trittleiste mit zwei Leistenprofilen ausgestattet ist und die gerade betreten wird,

Fig. 2

eine schematische Stirnsansicht einer Trittleiste mit zwei Leistenprofilen,

Fig. 3

eine schematische Stirnseitenansicht des bei der Trittleiste von Fig. 2 eingebauten Leistenprofils,

Fig. 4

eine Stirnseitenansicht eines Leistenprofils in elektrischer Ausführung,

Fig. 5

eine schematische Seitenansicht des Leistenprofils von Fig. 4,

Fig. 6

eine schematische Seitenansicht eines Leistenprofils in pneumatischer Ausführung,

Fig. 7

eine Stirnansicht der Leistenprofils von Fig. 6 und

Fig. 8

eine vergrößerte Ansicht eines im Leistenprofil von Fig. 6 und 7 eingebauten Luftnippels.

The invention will be further described below with reference to exemplary embodiments and the drawing. Show it:

Fig. 1

a perspective view of a vehicle door sills, the tread bar is equipped with two strips profiles and is being entered,

Fig. 2

a schematic front view of a tread bar with two strips profiles,

Fig. 3

a schematic front view of the in the tread of Fig. 2 built-in strip profile,

Fig. 4

an end view of a strip profile in electrical design,

Fig. 5

a schematic side view of the last profile of Fig. 4 .

Fig. 6

a schematic side view of a strip profile in pneumatic design,

Fig. 7

an end view of the last profile of Fig. 6 and

Fig. 8

an enlarged view of one in the last profile of Fig. 6 and 7 built-in air nipples.

Fig. 1 The Fußschutzleiste is installed at the edge of the floor 4 of the passenger compartment and is just entered by a passenger who touches his left foot or shoe 6 on the Fußschutzleiste 2 in perspective view. This is installed between the two door portals and includes a tread bar 12 made of suitable metal, such as aluminum, which is bent at the outer end to a front leg 14, the serves to support and protect the bottom edge and threshold in a conventional manner. On the upper side, the tread bar 12 has two longitudinally extending parallel recessed areas 16, 18, in which the two strips profiles 8, 10 are received, that is, the recessed areas 16, 18 serve as a counter profile for the respective strip profile Fig. 2 shows more in detail. The shape of the inguinal profile goes more clearly from the view of Fig. 3 out. These are elastically made of rubber material and designed curved upwards, with a cavity inside. The top of the strip profiles is profiled so that they represent a good anti-slip.

Kick a passenger, as in Fig. 1 indicated when entering the vehicle on the Fußschutzleiste, so he pushes one of the two strips profiles 8, 10 down. This then leads to the triggering of a built-in profile strip signal receiver, which will be described later in more detail. Sufficient is already a strip profile, but the provision of a second strip profile ensures that always a strip profile is entered, even if the passenger makes larger steps or only enters the edge of the sill. As an optical safety measure, the tops of the strip profiles may be colored, usually yellow.

Fig. 4 and Fig. 5 show the execution example of the strip profile 8 with electrical signal sensor. Fig. 4 represents a view in the direction of arrow X in Fig. 5 In the interior of the strip profile 8 extends an electrical contact strip 20, which is supported by its ends in each stopper 22, 24. The plug 24 is solid, while the plug 22 has a bore 26. Through the bore 26, an electrical cable 28 is guided, which is connected to an electrical switching device, not shown, the door drive circuit. Occurs when a passenger Any point on the strip profile 8, the top of the strip profile is pressed down so that it comes to a contact of the contact strip 20 and this remains as long as the strip profile is pressed. The closing signal of the electrical contact strip 20 is guided via the cable 28 to the switching device, which then triggers a corresponding door operation or a delay of the door operation.

Fig. 6 to 8 illustrate a pneumatic design of a strip profile. The front view of Fig. 7 is in the direction of the arrow X in Fig. 6 and shown again is, for example, the strip profile 8. The interior of the strip profile 8 in turn represents a hollow chamber 29, which is closed by plugs 30, 32. The plug 32 is solid as in the electrical design, while the stop fen 30 has a bore 34. In the bore 34 sits an air nipple 36, on the outer shoulder 38, a hose 40 is placed. The tube 40 thus connects the hermetically sealed hollow chamber 29 with an electropneumatic converter or valve (eg pressure wave switch). By suitable measures, the pressure wave switch is designed so that a continuous signal is delivered to the door control during the entry of the relevant strip profile.

The Fußschutzleiste invention is suitable both as a hold-open device in automatic doors and / or as a reversing device for manually operated doors and makes, as the above description illustrates, usually a light barrier dispensable, further a non-contact safety device is used. By appropriate Wandstärkenausführung and interpretation of the profile strip triggering the safety device can be effected even at low contact pressures.

When you step on the profile bar a pressure surge is generated, from which then the mentioned signal is derived. The door opening or stop signal is given before the finger guard the vehicle door becomes effective, that is, before the passenger or his luggage is touched.

Claims (11)

1. Foot protective strip (2) for an automatically or manually operated door, in particular of a public transport means, comprising a tread strip (12) and a signal transducer which is responsive to treading on the tread strip and whose output signal is provided for door control which causes the door to remain open or reverse, wherein a strip profile (8) consisting of elastic material is received in a counter profile (16), which is formed by recessed regions (16, 18) of the tread strip (12) and an elongated signal transducer (20, 29) for door control which is responsive to pressure is provided in the strip profile (8) over the entire length thereof, characterised in that the counter profile (16) of the tread strip (12) is provided on the upper side thereof, the strip profile (8) is designed so as to be curved upwards and the strip profile (8) as a front strip profile (8) is disposed in the vicinity of the edge or boundary of the passenger compartment and extends over the entire door width.
2. Foot protective strip as claimed in claim 1, characterised in that a parallel rear second strip profile (10) is disposed at a spaced interval from the first strip profile (8).
3. Foot protective strip as claimed in claim 1 or 2, characterised in that the front strip profile (8) is guided as far as the boundary or edge of the tread strip (12).
4. Foot protective strip as claimed in any one of claims 1 to 3, for use in a transport means having one or several steps at the passenger compartment exit, characterised in that at least one step is likewise equipped with a foot protective strip.
5. Foot protective strip as claimed in any one of claims 1 to 4, characterised in that the strip profile(s) (8, 10) is (are) coloured on the upper side.
6. Foot protective strip as claimed in any one of claims 1 to 5, characterised in that the strip profile(s) (8, 10) is (are) curved on the upper side and/or formed with a profile.
7. Foot protective strip as claimed in any one of claims 1 to 6, characterised in that the strip profile (8) is formed as a hollow chamber (29) which is closed on both sides
   and one end of a tube (40) issues into the hallow chamber, the other end of the tube being connected to an electro-pneumatic transducer whose output signal is fed to the door control facility.
8. Foot protective strip as claimed in claim 7, characterised in that the hollow chamber (29) is closed by means of stoppers (22, 24; 30, 32).
9. Foot protective strip as claimed in any one of claims 1 to 8, characterised in that upon treading on the strip profile (8, 10) a permanent contact is provided for the transducer output signal.
10. Foot protective strip as claimed in any ane of claims 1 to 9, characterised in that an electrical contact strip (20) whose signal is fed to the door control circuit is disposed in the strip profile (8).
11. Foot protective strip as claimed in any one of claims 2 to 10, characterised in that a switch is provided for the signal transducer signal of both strip profiles.

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