Heated Emergency Release

Abstract

An external emergency unlocking device of a door. The emergency unlocking device includes an emergency actuating device which can be protected against icing by a heating element. A corresponding passenger transport means, in particular a rail vehicle, is also disclosed.

Claims

1. An external emergency unlocking device of a door of a passenger transport vehicle, comprising an emergency actuating device and at least one heating element, wherein the at least one heating element is arranged on at least one of the emergency unlocking device and the emergency actuating device such that the emergency actuating device is protected against icing by the heating element.

2. The external emergency unlocking device according to claim 1, wherein the emergency actuating device does not serve as a standard opening actuating device for the door.

3. The external emergency unlocking device according to claim 1, wherein the emergency unlocking device comprises a cover flap.

4. The external emergency unlocking device according to claim 3, wherein the cover flap comprises the at least one heating element, or wherein the cover flap and the emergency actuating device comprise the at least one heating element.

5. The external emergency unlocking device according to claim 1, wherein the at least one heating element is at least one of an electrically heating and a linear heating element.

6. The external emergency unlocking device according to claim 1, further comprising a hollow, wherein the emergency actuating device is embedded in a hollow.

7. The external emergency unlocking device according to claim 6, wherein the at least one heating element is installed at a rear side of the hollow facing the passenger transport vehicle and from inside behind the hollow.

8. The external emergency unlocking device according to claim 1, wherein the at least one heating element is mounted by means of bonding.

9. The external emergency unlocking device according to claim 8, wherein the bonding is carried out by means of a thermally conductive adhesive.

10. The external emergency unlocking device according to claim 8, wherein the thermally conductive adhesive is a two-component epoxy- or silicone-based adhesive.

11. The external emergency unlocking device according to claim 1, wherein at least one of control, regulation, and monitoring of the at least one heating element is monitored by a thermal sensor and regulated by control electronics.

12. The external emergency unlocking device according to claim 1, wherein at least one of control, regulation, and monitoring of the at least one heating element takes place via an air conditioning system.

13. The external emergency unlocking device according to claim 1, wherein at least one of a control and regulation device and the at least one heating element are operated by an autonomous power supply.

14. A door assembly for a passenger transport vehicle, comprising a door and a standard opening actuating device for opening and closing the door during intended operation of the passenger transport vehicle and an external emergency unlocking device according to claim 1.

15. The door assembly according to claim 14, further comprising a closing mechanism for locking the door in a door frame of the passenger transport vehicle, wherein the emergency actuating device is configured such that the closing mechanism can be opened purely mechanically and without opening-effective actuation of electrical/electronic action mechanisms.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings illustrate embodiments and, together with the description, serve to explain the principles of the invention. The elements of the drawings are relative to each other and not necessarily to scale. Identical reference signs here denote correspondingly similar parts.

[0028] FIG. 1 shows a sectional view of an external emergency unlocking device integrated into a vehicle body.

[0029] FIGS. 2a to 2c show—in schematic representation—a sectional view of an external emergency unlocking device with (FIGS. 2b and 2c) and without (FIG. 2a) cover flap and different embodiments with regard to the placement of heating elements.

DESCRIPTION OF THE INVENTION

[0030] Although specific embodiments have been illustrated and described herein, it is within the scope of the present invention to suitably modify the embodiments shown without departing from the scope of the present invention.

[0031] FIG. 1 shows an external emergency unlocking device (1) comprising a hollow (5) applied to a vehicle body (6) from the outside, such that an indentation, i.e. the hollow (5), is located in the vehicle body (6). The emergency actuating device (2), which represents the actuating device of the emergency release, is present in this recess. By activation, i.e. by turning, pushing or pulling, a door is mechanically emergency unlocked and can thus be opened easily. In specific embodiments, a direct door opening by actuation is directly possible. A cover flap (4) is fitted above the hollow (5) and is connected to the hollow (4) by a hinge (7). The hinge (7) can of course also be located on the vehicle body (6). The closing mechanism (8) allows the cover flap (4) to be locked. The heating elements (3) shown here are located outside the hollow (5) and are installed from the inside behind the fastening of the hollow (5) for the emergency release. This means that the heating elements (3) can be reached from the outside—relative to the hollow (5)—in the event of a malfunction, or they could also be installed in such a way that repair is possible via the inside of the car. As shown schematically, the heating elements (3) in this design are located close to the hinge (7) or the closing mechanism (8), as these elements are particularly at risk with regard to inoperability—i.e. non-openability of the cover flap (4)—in the event of ice build-up.

[0032] FIG. 2a shows an example of an external emergency unlocking device (1) without cover flap. The emergency actuating device (2) located in a hollow (5) is kept functional, i.e. protected against ice build-up, by heating elements (3) being located close to the actuating mechanism. The mechanism contained therein is thus protected against ice build-up.

[0033] FIG. 2b shows an external emergency unlocking device (1) which comprises a cover flap (4). The resulting protection against environmental influences on the emergency actuating device (2) involves the risk of the cover flap (4) freezing over, which is eliminated by heating elements (3) being located—at least partially—above the opening areas of the cover flap (4). In the sectional view of FIG. 2b, the heating elements (3) are close to the hinge (7) and closing mechanism (8), cf. FIG. 1.

[0034] FIG. 2 c combines the advantages of the embodiments in FIGS. 2a and 2b. This protects both the cover flap (4) and the emergency actuating device (2) from icing up by means of heating elements (3).