Abstract
A pulling element is provided for automatically pulling a closing element out of a filter of an escape filter device. An escape filter device is also provided that has a hood and a filter integrated into the hood, with at least one such pulling element. An escape filter device system is also provided having such an escape filter device and a device shell. A method is provided for mounting an escape filter device system.
Claims
1. A pulling element for pulling a closing element out of a filter of an escape filter device, which is arranged in a device shell in a resting position with a resting distance to the device shell, wherein the escape filter device is moveable into a removal position with an increased removal distance to the resting distance, the pulling element comprising: a first fastening section for fastening the pulling element to the closing element; and a second fastening section for fastening on an inner side of the device shell, wherein the two fastening sections have a fastening distance to one another, which is smaller than or equal to the removal distance.
2. A pulling element in accordance with claim 1, wherein the pulling element is inflexible.
3. A pulling element in accordance with claim 1, wherein the pulling element is flexible.
4. A pulling element in accordance with claim 1, wherein at least one of the first fastening section and the second fastening section comprises a snap-in element.
5. A pulling element in accordance with claim 1, wherein at least one of the first fastening section and the second fastening section comprises flexible barbs.
6. A pulling element in accordance with claim 1, further comprising a stopping element between the first fastening section and the second fastening section.
7. A pulling element in accordance with claim 1, further comprising at least one of a mounting control element and a gripping element at one end of the pulling element.
8. An escape filter device comprising: a hood; a filter, which has a filter inlet side and a filter outlet side, integrated into the hood; a closing element; and a pulling element for pulling out the closing element from the filter, wherein the filter inlet side or the filter outlet side is closed in a gas-tight manner by means of the closing element and the pulling element is arranged on the closing element, the escape filter device is arranged in a device shell in a resting position with a resting distance to the device shell, and the escape filter device is moveable into a removal position with an increased removal distance to the resting distance, the pulling element comprising: a first fastening section for fastening the pulling element to the closing element; and a second fastening section for fastening on an inner side of the device shell, wherein the two fastening sections have a fastening distance to one another, which is smaller than or equal to the removal distance.
9. An escape filter device in accordance with claim 8, wherein the closing element is a first closing element that closes the filter inlet side and the pulling element is a first pulling element and further comprising: a second closing element closing the filter outlet side; and a second pulling element for pulling out the second closing element from the filter, the second pulling element being arranged on the second closing element, the second pulling element comprising a second pulling element first fastening section for fastening the second pulling element to the second closing element and a second pulling element second fastening section for fastening the second pulling element on an inner side of the device shell, a distance from the second pulling element first fastening section to the second pulling element second fastening section being smaller than or equal to the removal distance.
10. An escape filter device system, comprising: a device shell having a first inner side and a second inner side; an escape filter device comprising: a hood; a filter, which has a filter inlet side and a filter outlet side, integrated into the hood; a closing element; and a pulling element for pulling out the closing element from the filter, wherein the filter inlet side or the filter outlet side is closed in a gas-tight manner by means of the closing element and, the pulling element comprises a first fastening section for fastening the pulling element to the closing element and a second fastening section, wherein the two fastening sections have a fastening distance to one another, which is smaller than or equal to a removal distance between the device shell and the escape filter device; and a pulling element holding device, wherein: the escape filter device is arrangeable in a resting position in the device shell and the device shell is openable for transferring the escape filter device into a removal position; and the pulling element holding device is arranged on one of the first inner side and the second inner side of the device shell for fastening the second fastening section of the pulling element to the pulling element holding device, wherein the pulling element and the pulling element holding device are configured and are coordinated with one another such that the closing element is automatically pulled out of the filter during the opening of the device shell upon reaching the removal distance between the device shell and the escape filter device.
11. An escape filter device system in accordance with claim 10, wherein the device shell has a device shell bottom portion with the first inner side and a device shell top portion with the second inner side, which top portion and bottom portion are pivotably connected to one another.
12. An escape filter device system in accordance with claim 11, wherein the device shell bottom side and the device shell top side are designed as hard components.
13. An escape filter device system in accordance with claim 12, further comprising a spring element arranged to press against the device shell bottom portion and the device shell top portion with the device shell being closed.
14. An escape filter device system in accordance with claim 11, wherein the device shell has a closing element for closing and opening the device shell bottom portion and the device shell top portion.
15. An escape filter device system in accordance with claim 10, further comprising a guide on the inner side of the device shell for guiding the pulling element.
16. An escape filter device system in accordance with claim 10, further comprising a retaining device for retaining the escape filter device.
17. An escape filter device system in accordance with claim 10, wherein: the closing element is a closing element that closes the filter inlet side and the pulling element is a first pulling element; the pulling element holding device is a first pulling element holding device; the escape filter device further comprises: a second closing element closing the filter outlet side; and a second pulling element for pulling out the second closing element from the filter; the escape filter device system further comprises a second pulling element holding device; the second pulling element holding device is arranged on the other of the first inner side and the second inner side; the second pulling element comprises a second pulling element first fastening section for fastening the second pulling element to the second closing element; and a second pulling element second fastening section for fastening the second pulling element to the second pulling element holding device, wherein the two second pulling element fastening sections have a fastening distance to one another, which is smaller than or equal to the removal distance between the device shell and the escape filter device, whereby the second pulling element and the second pulling element holding device are configured and are coordinated with one another such that the second closing element is automatically pulled out of the filter during the opening of the device shell upon reaching the removal distance between the device shell and the escape filter device.
18. A method for mounting an escape filter device system the method comprising the steps of: providing an escape filter device comprising a hood, a filter, which has a filter inlet side and a filter outlet side, integrated into the hood, a first closing element, a second closing element, a first pulling element and a second pulling element, each pulling element comprising a first fastening section for fastening the pulling element to the closing element and a second fastening section for fastening on an inner side of a device shell, wherein the two fastening sections have a fastening distance to one another, which is smaller than or equal to a removal distance; providing the device shell, in which the escape filter device is arrangeable in a resting position and which is openable for transferring the escape filter device into a removal position; fastening the first fastening section of the first pulling element to the first closing element; fastening the second fastening section of the first pulling element to a first pulling element holding device at a first position on the inner side of the device shell; fastening the first fastening section of the second pulling element to the second closing element; closing the device shell until reaching a mounting position, wherein the device shell is not yet completely closed in the mounting position, and with the device shell in the mounting position, fastening the second fastening section of the second pulling element to a second pulling element holding device at a second position on the inner side of the device shell; and closing the device shell completely.
19. A method in accordance with claim 18, wherein: the first pulling element is designed as a flexible pulling element; the first fastening section of the first and second pulling elements is designed as a first barb and the second fastening section of the at least one of the first and second pulling elements is designed as a second barb; the first closing element has a pulling element fastening device with an opening; and a first end of the at least one of the first and second pulling elements is pulled through the opening of the pulling element fastening device of the first closing element until the first barb is pulled through the opening of the pulling element fastening device and subsequently the second end of the at least one of the first and second pulling elements is pulled through an opening of the first pulling element holding device for creating the fastening distance until the second barb of the at least one of the first and second pulling elements is pulled through the opening of the first pulling element holding device.
20. A method in accordance with claim 19, wherein the at least one of the first and second pulling elements has a stopping element between the first and second barbs, wherein after the pulling of the second barb of the at least one of the first and second pulling elements through the first pulling element holding device on the inner side of the device shell, the stopping element stops at the pulling element holding device and prevents a further pulling of the at least one of the first and second pulling elements through the opening of the pulling element holding device.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) In the drawings:
(2) FIG. 1 is a top view of a pulling element according to the present invention designed as a pulling strap;
(3) FIG. 2 is a top view of the pulling strap according to FIG. 1 fastened to a closing element;
(4) FIG. 3 is a detail view of a detail of the perspective sectional view taken at the cross sectional plane of FIG. 4, with the perspective at a different angle from that of FIG. 4, showing the coupling between a closing element and the inner side of a device shell by means of a pulling element;
(5) FIG. 4 is a perspective sectional view taken along a cross sectional plane passing through a central region of the escape filter device system, showing an escape filter device system, which is designed according to the design principle according to the present invention, and with the hood of the escape filter device not shown for the sake of clarity;
(6) FIG. 5 is a detail view of a detail of the perspective sectional view taken at the cross sectional plane of FIG. 7, with the perspective at a different angle from that of FIG. 7, showing the coupling between a closing element and a device shell top side of a device shell by means of a pulling element;
(7) FIG. 6 is a perspective view showing an arrangement of an escape filter device in a device shell bottom side of a device shell of an escape filter device system;
(8) FIG. 7 is a perspective sectional view taken along a cross sectional plane of FIG. 4 and rotated clockwise around a horizontal axis and vertical axis relative to FIG. 4, showing a filter device system, which is designed according to the design principle according to the present invention, and with the hood of the escape filter device not shown for the sake of clarity; and
(9) FIG. 8 is a schematic view showing an escape filter device system in a side view with interior features shown in section, taken along a cross sectional plane passing through a central region of the escape filter device system, wherein the mounting position of the device shell is shown.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
(10) Referring to the drawings, elements having identical function and mode of action are each provided with identical reference numbers in FIG. 1 through 8.
(11) FIGS. 1 through 8 below shall illustrate the opening mechanism of an escape filter device system and an overview for the mounting of an escape filter device system into a device shell of an escape filter device system.
(12) FIG. 1 schematically shows a top view of a pulling element 1, 11, which is used for pulling a closing element 20, 30 out of a filter 40 of an escape filter device 50. The pulling element 1, 11 is designed as flexible, especially as a fabric pulling strap and has a first end 6, 16 as well as a second end 7, 17. Furthermore, the pulling element 1, 11 has a first fastening section 2, 12 and a second fastening section 3, 13. The fastening sections 2, 3, 12, 13 are preferably designed as flexible barbs in the pulling strap 1, 11. A stopping element 4, 14 is arranged on the pulling element 1, 11 between the two fastening sections 2, 3, 12, 13. The fastening sections 2, 3, 12, 13 as well as the stopping element 4, 14 are arranged close to the first end 6, 16 of the pulling element 1, 11. At the so-called long second end 7, 17, a mounting control element 5, 15 is arranged close to the end of the pulling element 1, 11. The mounting control element 5, 15 is used for marking the achieving of the correct mounting of the pulling element 1, 11 on a closing element 20, 30 and on an inner side 110, 120 of a device shell 100 of an escape filter device system 70.
(13) FIG. 2 schematically shows the fastening of the first end 6, 16 of a pulling element 1, 11 to a closing element 20, 30. The closing element 20, 30 is used for sealing a filter inlet side or a filter outlet side of a filter 40 of an escape filter device 50 in a gas-tight manner. The closing element 20, 30 is preferably designed as a plug, especially as a rubber plug. On the closing element 20, 30 is provided a pulling element fastening device 21, 31, especially in the form of a locking funnel. For fastening the pulling element 1, 11 to the closing element 20, 30, the pulling element 1, 11 is pulled, beginning with the first end 6, 16, through the pulling element fastening devices 21, 31. Reference number 22 indicates the fastening pulling direction of the pulling element 1, 11, i.e., of the first end 6, 16 of the pulling element 1, 11 through the locking funnel 21, 31. The pulling element 1, 11 is pulled through the locking funnel 21, 31 until the first fastening section 2, 12, which is designed as a flexible barb, of the pulling element 1, 11 has been pulled through the locking funnel 21, 31. Because of its flexible design, namely comprising a snap-in element configuration, the first fastening section 2, 12 can be pulled through the locking funnel 21, 31. After the pulling through, the flexible barbs 2, 12 spread apart from one another, so that the pulling element 1, 11 can no longer be pulled in a direction opposite to the fastening pulling direction 22. The flexible barb 2, 12 then stops on the outer side of the locking funnel 21, 31. The second fastening section 3, 13 of the pulling element 1, 11 is likewise designed as a flexible barb, namely comprising a snap-in element configuration, wherein the orientation of the barb is opposite the orientation of the first barb 2, 12, so that the second barb 3, 13 can be pulled, in a pulling direction opposite to the fastening pulling direction 22, through a pulling element holding device 111, 121 (which is not shown) on the inner side 110, 120 of a device shell 100 and held on same.
(14) FIG. 3 schematically shows in a perspective view the coupling between a first closing element 20 and the inner side 110 of a device shell bottom side 101 of a device shell 100 of an escape filter device system 70 by means of a first pulling element 1. The first closing element 20, which is preferably designed as a rubber plug, seals, for example, the filter inlet side 42 of the filter 40 in a gas-tight manner. The first end 6 of the pulling element 1 has been pulled through the opening of the pulling element fastening device 21, so that the first fastening section 2 of the first pulling element 1 is fastened to the pulling element fastening device 21. The first pulling element 1, which is designed as flexible, has been deflected and guided along the inner side 110 of the device shell bottom side 101, wherein the second fastening section 3 of the pulling element 1 has already been pulled through the pulling element holding device 111, designed as a locking funnel, on the inner side 110 of the device shell bottom side 101. Thus, the second fastening section 3 of the pulling element 1 is fastened to the pulling element holding device 111 on the inner side 110 of the device shell bottom side 101. In the fastened state, the two fastening sections 2, 3 of the pulling element 1 have a short fastening distance to one another, preferably less than 10 cm, especially less than 6 cm. The filter 40 advantageously has Hopcalite 43 in its interior.
(15) In the view shown in FIG. 3, the escape filter device 50 and thus the filter 40 of the escape filter device 50 are located in a resting position 60 within the device shell 100 of the escape filter device system 70. In this resting position 60, the escape filter device 50 or the filter 40 is arranged with a resting distance 61 to the device shell 100.
(16) The mounting of the escape filter device 50 on the device shell bottom side 111 preferably takes place as follows: The folded-together hood, not shown in this FIG. 3, is held together with the filter 40, the closing element 20 installed in the filter 40 and the pulling strap 1 already mounted on the closing element 20, so that the pulling strap 1 with the long side, i.e., with the second end 7, is inserted into the locking funnel 21 on the inner side 110 of the device shell bottom side 111. After the insertion of the pulling strap 1 through the locking funnel 21, the folded-together hood and the filter 40 integrated into the hood can be positioned in the device shell bottom side 101.
(17) FIG. 4 shows the arrangement of a filter 40, having Hopcalite 43 and an additional filter element 44, in the resting position 60 within a closed device shell 100 of an escape filter device system 70. The hood of the escape filter device 50 is not shown for the sake of clarity. In the resting position 60, the escape filter device 50 or the filter 40 of the escape filter device 50 is arranged with a resting distance 61 of a few cm, especially with less than 5 cm, to the device shell bottom side 101 and the device shell top side 102. The device shell 100 has a closing element 130 for closing and opening the device shell 100, especially for closing and opening the device shell bottom side 101 and the device shell top side 102. The device shell top side 102 is mounted pivotably on the device shell bottom side 101 via a hinge 105. As a result, a defined opening movement of the two device shell sides 101, 102 is predetermined. The pulling strap 1 from FIG. 1 is guided on the long side of the pulling strap 1 outwards in the direction of the closing element 130. The pulling strap 1 is pulled at its second end 7 until the stopping element 4 of the pulling strap 1 stops on the outer side of the pulling element holding device 111. The stop of the stopping element 4 at the pulling element holding device 111 designed as a locking funnel means that the flexible second barb 3 of the pulling strap 1 is locked at the pulling element holding device 111. After the fastening or locking of the second fastening section 3 at the pulling element holding device 111 on the device shell bottom side 101, the fastening sections on the first pulling strap 1 facing the pulling element fastening device 21 on the closing element 20 and the pulling element holding device 111 on the device shell bottom side 101 have reached their end position. From this time, the function of the pulling strap 1 is activated and a removal of the escape filter device 50 from the device shell bottom side 101 is no longer possible without a pulling out of the first closing element 20 from the filter 40 and a partial activation of the filter 40 associated with it.
(18) The clearly fastened position of the pulling strap 1 on the device shell bottom side 101 can be indicated by the mounting control element 5, shown in FIG. 1, which is preferably an optical marking, on the pulling strap 1 outside of the device shell 100, see FIG. 8. The pulling strap 1 protruding from the device shell 100 can either be positioned in the device shell bottom side 101 in such a way that there is no hindrance upon opening the device shell 100 and removing the escape filter device 50. It is also conceivable that the pulling strap 1 is shortened at a suitable point after the mounting of the escape filter device system 70.
(19) The escape filter device 50 positioned in the device shell bottom side 101 can additionally be retained on the device shell bottom side 101 by a retaining device 140. This retaining device 140 advantageously has closable Velcro elements, which are used for the escape filter device 50 to not simply fall out of the device shell bottom side 101 and possibly be damaged after the removal of the device shell top side 102 from the device shell bottom side 101. In case of a removal of the escape filter device 50 from the device shell bottom side 101, the retaining device 140 is automatically opened by the removal force applied and thereby does not hinder the removal of the escape filter device 50 from the device shell bottom side 101. The coupling of the second closing element 30 by means of the second pulling element 11 on the device shell top side 102 is schematically shown in FIG. 5. Here, the second pulling element 11 is also designed as a flexible pulling strap. After the fastening of the first fastening section 12 to the second closing element 30, the second end 17 of the second pulling strap 11 is guided through the pulling element holding device 121, designed as a locking funnel, on the inner side 120 of the device shell top side 102. The device shell top side 102 is moved up to the mounting position, i.e., up to shortly before the final closing of the device shell sides 101, 102, so that the guiding of the second pulling strap 11 on the long side of the pulling strap 11 outwards, i.e., in the direction of the closing element 130, is barely possible. In the mounting position, the second pulling strap 11 is pulled at its second end 17 until the stopping element 14 stops at the pulling element holding device 121, which is designed as a locking funnel. It is ensured by the stopping of the stopping element 14 that the second barb 13, which has a flexible design, of the second pulling element 11 was pulled through the locking funnel 121 and thus has reached its fastening position. From this time, the function of the second pulling strap 11 is likewise activated and the opening of the device shell 100, especially the opening of the device shell top side 102 from the device shell bottom side 101, as well as a removal of the escape filter device 50 from the device shell 100 without an activation of the filter 40, i.e., a removing of the closing elements 20, 30, is no longer possible. The fact that the second pulling strap 11 has likewise taken up the clearly fastened position in relation to the device shell top side 102 or the pulling element holding device 121, can likewise be indicated by a mounting control element 15, see FIG. 1, on the second pulling strap 11 outside the device shell 100. In this case, the protruding second strap 11 may also be positioned in the device shell 100 such that there is no hindrance upon opening the device shell 100 and upon removal of the escape filter device 50. Also the protruding part of the second pulling strap 11 may be shortened, for example, cut off at a suitable point. After the activation of the two pulling elements 1, 11 in the mounting position, the device shell 100 is closed, especially by means of the closing element 130. In addition, the closed device shell 100 can be secured against unintentional opening by means of a seal as an indicator.
(20) FIG. 7 shows in a perspective view a section through an escape filter device system 70. For better recognition of the pulling elements 1, 11, the hood of the escape filter device 50 is not shown, but only the filter 40. The closing element 130 is used, on the one hand, for closing the device shell 100, i.e., for closing the device shell top side 102 on the device shell bottom side 101. At the same time, the closing element 130 is also used for opening the device shell 100. For closing, the closing element 130 can connect the device shell sides 101, 102 via a snap connection in a positive-locking manner. The closing element 130 may be designed as an opening strap which can be pulled in order to remove the device shell top side 102 from the device shell bottom side 101. As an alternative thereto, a special opening strap may be arranged on the closing element 130. The closing element 130 has to be pulled for using the escape filter device 50, which is arranged in the resting position 60 within the device shell 100 of the escape filter device system 70. In this connection, the device shell top side 102 is pivoted to the device shell bottom side 101 until the second closing element 20 is pulled out of the filter 40 due to the tension of the second pulling element 11 between the pulling element fastening device 121 on the closing element 20 and the pulling element holding device 121 on the device shell top side 102. I.e., due to the opening of the device shell top side 102, a defined opening force of the second pulling element 11 acts on the second closing element 30 by means of a force deflection and removes this second closing element 30 from the filter 40, for example, the filter inlet side 42 of the filter 40. In order to produce a counterforce for removing the second closing element 30, which is preferably designed as a rubber plug, from the filter 40, the filter 40 or the entire escape filter device 50 is fixed on the device shell bottom side 101 by means of the retaining device 140, as FIG. 6 shows. Thus, the second closing element 30 is removed by the opening movement of the device shell top side 102 from the filter 40 and, for example, the filter inlet side 42 of the filter 40 is activated. Subsequently, the user grasps the escape filter device 50 to remove it from the device shell bottom side 101. By removing the escape filter device 50, the retaining device 140 automatically opens. Upon reaching a defined removal distance, which is greater than the fastening distance 62 of the two fastening sections 2, 3 of the first pulling element 1, the first closing element 20 is retained by the first pulling element 1 in the device shell bottom side 101 on the filter 40, especially on the filter outlet side 42 of the filter 40. I.e., due to the pulling out of the escape filter device 50, the second closing element 30 is separated from the filter 40 and thus also activates the second filter side, especially the filter outlet side 42. The escape filter device is now automatically completely ready for use without the user having to take further actions on the escape filter device 50. The retaining device 140 additionally takes over the function of holding the hood of the escape filter device 50 after opening the device shell top side 102 in the resting position in the device shell bottom side 101 in order to avoid an unintentional falling out of the filter device from the device shell bottom side 101 and thus to prevent possible damage of the escape filter device.
(21) FIG. 8 schematically shows an escape filter device system 70 in a side view. The escape filter device 50 has a filter 40 as well as a hood 51 with a window 52 and with an exhalation valve 45. The escape filter device 50 is positioned in a resting position 60 in the device shell bottom side 101 of the device shell 100. The device shell top side 102 is not entirely closed. I.e., in this position the device shell top side 102 has reached the mounting position of the second pulling element 11. The second pulling element 11 is pulled at its second end 17, which may have a gripping element 18 embodied by a loop at the end 17 of the pulling element 11, so far out of the gap between the device shell bottom side 101 and the device shell top side 102 that the mounting control element 15 is visible. In this position of the mounting control element 15, it is ensured that the second fastening section 13, which is designed as a flexible barb, of the second pulling element 11 has been pulled through the pulling element holding device 121 designed as a locking funnel and the stopping element 14 is stopped at the pulling element holding device 121. After the recognizing of the mounting control element 15, the second end 17 of the second pulling element 11 can be inserted into the interior of the device shell 100 and the device shell 100 can be completely closed by the closing element 130. The two pulling elements 1, 11 are thereby activated and an opening of the device shell 100 is no longer possible without an activation of the filter 40.
(22) The above explanation of the embodiments describes the present invention exclusively within the framework of examples. Of course, individual features of the embodiments, if technically useful, can be freely combined with one another, without going beyond the concepts of the present invention.
(23) While specific embodiments of the invention have been shown and described in detail to illustrate the application of the principles of the invention, it will be understood that the invention may be embodied otherwise without departing from such principles.
