DE102018123513A1 - Protection device - Google Patents

Abstract

The invention relates to a protective device for a light well cover, comprising a frame and a net stretched in the frame, the frame having a clamping area for fastening the protective device between a light well cover and a light well edge and a fastening device for the net.

Description

The invention relates to a protective device for a light well cover, comprising a frame and a network spanned in the frame.

To protect light wells, light well covers are used. The light well cover is placed on an upper edge of the light well. The edge of the light well can be offset slightly inwards and downwards relative to an upper edge of the light well, so that the light well cover, when placed on the light well edge, closes flush with the upper edge and does not protrude. This can prevent injuries.

Light well covers usually have a grate with comparatively large openings through which dirt, leaves and / or small animals, e.g. Insects that can fall.

Protective devices for light well covers are known which prevent leaves and / or small animals from falling through the light well cover into the light well. The protective device, which comprises a comparatively thick frame and a network spanned in the frame, is placed on the light shaft cover. For example, it can be attached using screws.

The disadvantage of this is that the protective device protrudes over the upper edge of the light well and, in a sense, forms a trip hazard.

Also, the network is always loaded when entering, which can lead to damage.

It is therefore an object of the invention to provide a long-lasting protective device for a light well cover.

This object is achieved by the subject matter and the method of the independent claims.

According to the invention, the protective device for a light well cover is designed as a protective device. The protective device is therefore not placed on the light well cover, but placed below it.

The protective device is always in the installed position below the light well cover and is not damaged by a user, since the user does not come into contact with the protective device.

The protective device has a frame. The frame can in particular be individually adapted to the size of the light well.

The frame is preferably rectangular.

A network is spanned in the frame. The network preferably comprises or consists of a textile, plastic and / or metal material. For example, the mesh can be a textile fabric, glass fiber fabric, wire mesh and / or plastic mesh, e.g. made of PVC.

The mesh size is basically arbitrary. For example, the mesh size can be between 0.5 mm to 0.5 mm and 1 cm to 1 cm, preferably 1 mm to 1 mm.

The network is particularly translucent and / or water-permeable. It can also preferably be brought to the desired size, e.g. be tailored.

These are significant advantages compared to a rigid tub, for example, which should already be custom-made.

A net also has a small pack size and can be easily transported.

The frame has a clamping area for fastening the protective device between a light shaft cover and a light shaft edge.

Further fastening means, for example screws and / or clamps, for fastening the protective device on the light shaft cover and / or the light shaft edge are in particular not provided, but are in principle possible. The protective device and the light well cover and / or the light well edge are preferably not firmly connected to one another in the assembled position.

The clamping area can in particular have a width of at least 0.5 cm, 1 cm, 1.5 cm, 2 cm, 2.5 cm, 3 cm, 3.5 cm, 4 cm, 4.5 cm, 5 cm, 6 cm , 7 cm, 8 cm, 9 cm or 10 cm. For example, the clamping area is a maximum of 10 cm, 7 cm, 5 cm or 3 cm wide.

The frame, in particular the clamping area, is preferably designed so wide that an optional shaft safety device, for example a chain shaft safety device, can be guided through the frame. For this purpose, for example, a hole can be drilled through the frame or a slot can be cut in the frame, for example using a cut-off machine. Alternatively, a shaft safety device can also be routed through the network, for example.

In particular, an optional, preferably individually adaptable, grommet can be provided.

For example, conventional or existing manhole protection systems can be used.

Thanks to the clamping area, the frame can be quickly and easily placed on the edge of the light well and clamped in with the light well cover. In this way, the protective device is protected against gravity and cannot unintentionally come loose. As a result, the protective device is stationary and, in particular, cannot slip.

The edge of the light well can be offset somewhat downward and / or inward relative to an upper edge of the light well and can to a certain extent form a support edge or support step. First the clamping area of the frame and then the light shaft cover are placed on the edge of the light well. The clamping area is preferably flat. It was surprising that the light well cover closes at least essentially flush with the upper edge and does not protrude even when the protective device is inserted. The risk of injury is therefore kept to a minimum.

The light well cover and the protective device are preferably separate components. In particular, these components are not attached to one another. So these components can e.g. can be exchanged separately. Quick assembly and / or disassembly of the individual components, e.g. for maintenance, cleaning, repair or exchange, possible.

In addition to the clamping area, the frame also has a fastening device for the network. In this way, the frame fulfills a double function, since it serves on the one hand for fastening to the light well and on the other hand for fastening the net.

The network is spanned in the frame. In particular, the fastening device can be designed such that the net is stretched taut and thus does not sag. In the case of large protective devices in particular, the frame can also have rigid strips which extend lengthwise and / or transversely and in this way prevent sagging of the net.

The frame can e.g. comprise or consist of a plastic and / or metal material, in particular aluminum. In particular, the frame can be designed as a continuous casting and / or pressed profile.

The frame, in particular the clamping area, can preferably have projections, e.g. Pimples. The projections can in particular be provided at the corner regions and / or be directed in the direction of the edge of the light well. This can improve the hold of the protective device at the edge of the light well. The projections can in particular be designed to be irreversibly detachable. For example, they can shear, which improves grip.

A sound attenuation, preferably a rubber coating and / or a silicone layer, can be provided in the clamping area. Metallic rattling when entering the light well cover can be prevented.

In particular, a seal can be provided on the frame. This prevents the ingress of liquid, dirt and / or insects in the area of the edge of the light well.

In particular, an adhesive plastic tape can be provided which is placed on the frame, e.g. on the side of the house wall, is glued and e.g. is angled at approximately 90 degrees on the wall of the house. The angle depends on the position of the frame relative to the house wall. This creates a form-fitting closure to the wall of the house so that there is no gap.

Sealing to the wall and / or a downward stiffening of the light well cover can be done in particular by means of a flexible and / or conformable sealing strip, e.g. made of preferably weatherproof silicone, rubber and / or plastic material. The sealing strip can in particular be glued, clamped and / or screwed.

Further developments of the invention can also be found in the dependent claims, the description and the accompanying drawings.

According to one embodiment, the fastening device has a groove. The groove enables in particular a releasable, preferably tool-free, attachment of the network. If the net is damaged, it can be easily replaced while the frame can be retained. Correspondingly, a damaged frame can also be exchanged and an intact network can be reused.

The groove and / or the network is preferably arranged offset with respect to the plane of the clamping area. For example, the groove or the network can be arranged below the level of the clamping area. In this way, it is prevented that the net clamped in the groove comes into contact with the light well cover and is possibly damaged if the light well cover bends under weight.

Alternatively, the groove and / or the net can also be arranged above the level of the clamping area. In particular, the network can touch the light well cover from below. The fall height for animals is kept low, so that they can free themselves if necessary.

Finally, it is also possible for the groove and / or the net to be located in the plane of the clamping area.

According to a further embodiment, the fastening device has a piping. The piping is especially inserted into the groove, e.g. pressed in and clamped in it. The net can be attached to the frame. The network can also be tightened and / or stretched in the frame.

The welt can in particular be connected to the network, e.g. sewn up. Alternatively, it can also be separate components. The net is clamped between the groove and the piping. This allows a network to be flexibly adapted to different frame sizes in a simple manner.

According to a further embodiment, the frame, in particular the clamping area and / or the groove, runs all the way round. The frame and thus the entire protective device is held securely between the edge of the light well and the light well cover by a circumferential clamping area.

The network is preferably completely surrounded by the frame. The net is held evenly and / or securely by a circumferential groove in which the net is fastened. Sagging of the net is prevented or kept low.

According to a further embodiment, the corner areas of the frame are mitered, in particular cut. The cut can be made in particular at a 45 ° angle. The frame segments can in particular be trapezoidal.

A molded part made of metal and / or plastic can also be used to connect the corners in order to miter the corner areas in this way. In this case, the frame segments can in particular be cut straight and / or at an angle other than 45 °.

This results in a circumferential groove in a simple manner. Alternatively, the frame segments can be cut straight. In the case of a straight cut, both sides in particular have to be cut a little shorter and a corner connector with groove must be used. This requires a more complex corner connector.

According to a further embodiment, the fastening device is spaced from the clamping area, in particular laterally displaced. The network is therefore not directly connected to the terminal area. The clamping area can be made extremely flat in this way, while the wider groove can already be arranged next to the edge of the light well, that is to say in particular above the light well. There is enough space available there.

According to a further embodiment, the clamping area is designed like a plate. The clamping area can in particular be designed as a flat plate, bar or web. Because the clamping area is plate-like, a large contact surface is available, which ensures a secure hold.

The height of the clamping area can in particular be a maximum of 10 mm, 5 mm, 4 mm, 3 mm, 2 mm, 1 mm, 0.7 mm, 0.5 mm, 0.2 mm or 0.1 mm.

Due to the low height, a light well cover placed on it is hardly increased, so that it at least essentially closes flush with the upper edge of the light well and does not become a trip hazard. The optics of the light well cover are also not adversely affected.

Alternatively, higher profiles with a thin layer under the light shaft cover with a seal to the shaft wall are also conceivable, e.g. in a Z shape.

Optionally, an additional element can support the position of the light well cover in the well.

The invention also relates to a kit for a protective device, in particular according to the invention.

The kit has at least one frame segment with a clamping area for fastening the frame segment between a light shaft cover and a light shaft edge and with a fastening device designed as a groove.

Basically, one frame segment is sufficient, which can be cut into several frame segments. However, preferably several, for example four, frame segments are provided. This makes transportation easier because shorter frame segments already exist.

The frame segments can be individually adapted to the size of the light well. In this way, the frame segments can be cut to the desired length.

Standard frame segments can thus be manufactured and / or delivered, which e.g. be brought to the desired length by the end customer. The manufacturing costs can be kept low.

The standard frame segments can have a length of 2 m, 1.5 m, 1.2 m, 1 m, 0.6 m or 0.5 m, for example. The frame can in particular have a dimension of 1.2 m to 0.6 m.

The kit also has a stretchable network. The size of the network can also be e.g. can be cut to the desired size by the end customer.

Finally, the kit has a piping. The net can be connected to the frame via the piping. The piping can also connect the different frame segments to one another.

As an alternative or in addition, the frame segments can also be connected to one another in some other way, for example by means of a hanging, Velcro, clamp, clamp, plug-in, snap-in, magnet, pin and / or screwing device. The frame segments can in particular be attached without tools.

Corner connectors can preferably be used. The corner connectors can e.g. be inserted into a connecting channel of the frame segment.

The corner connectors can in particular comprise or consist of a plastic and / or metal material.

The frame segments can in particular be releasably attached to one another. In principle, permanent connections are also conceivable, for example adhesive, rivet, soldered and / or welded connections.

The invention also relates to a manufacturing method for manufacturing an, in particular, inventive protective device, preferably from a kit according to the invention.

In the manufacturing process, frame segments are first cut to a desired length, preferably with a miter.

If necessary, a net is cut to a desired size.

The net is then attached to the frame by clamping it in a groove in the frame using a piping.

The invention also relates to a system with an under-protection device according to the invention and a light shaft cover.

The protective device is in particular smaller or the same size as the light well cover. The dimension of the protective device is preferably smaller than the opening or upper edge of the light well.

In this way, the protective device can be placed on the edge of the light well below the light well cover.

In the assembled position, the underside of the light well cover lies in particular on the top of the clamping area of the protective device. The underside of the clamping area of the protective device rests on the top of the light well edge.

The invention also relates to a method for fastening a protective device according to the invention for a light well cover, in which the clamping area of the frame is placed on the edge of the light well and the light well cover is then placed on the clamping area.

In this way, the frame is clamped between the light well cover and the light well edge. In particular, no further fastening means are provided.

The method enables a quick assembly of the protective device.

All of the embodiments and components of the devices described here are in particular designed to be manufactured or attached using one or more of the methods described here. Furthermore, all of the embodiments of the devices described here and all of the embodiments of the methods described here can be combined with one another, in particular also detached from the specific design in which they are mentioned.

• 1 eine Schnittansicht einer Ausführungsform einer erfindungsgemäßen Unterschutzvorrichtung in einem Lichtschacht,
• 2 eine Unteransicht einer Ausführungsform einer erfindungsgemäßen Unterschutzvorrichtung,
• 3 eine Perspektivansicht einer ersten Ausführungsform eines Eckverbinders einer erfindungsgemäßen Unterschutzvorrichtung,
• 4 eine Perspektivansicht einer zweiten Ausführungsform eines Eckverbinders einer erfindungsgemäßen Unterschutzvorrichtung,
• 5 eine Schnittansicht einer Ausführungsform einer erfindungsgemäßen Unterschutzvorrichtung,
• 6 eine Schnittansicht einer weiteren Ausführungsform einer erfindungsgemäßen Unterschutzvorrichtung,
• 7 eine Schnittansicht einer weiteren Ausführungsform einer erfindungsgemäßen Unterschutzvorrichtung,
• 8 eine Perspektivansicht einer Ausführungsform einer erfindungsgemäßen Unterschutzvorrichtung,
• 9 eine Perspektivansicht einer weiteren Ausführungsform einer erfindungsgemäßen Unterschutzvorrichtung,
• 10 eine Perspektivansicht einer weiteren Ausführungsform einer erfindungsgemäßen Unterschutzvorrichtung,
• 11, 12 Perspektivansichten einer Ausführungsform einer Schachtsicherung einer erfindungsgemäßen Unterschutzvorrichtung,
• 13, 14 Perspektivansichten einer weiteren Ausführungsform einer Schachtsicherung einer erfindungsgemäßen Unterschutzvorrichtung,
• 15, 16 Perspektivansichten weiterer Ausführungsformen einer Schachtsicherung einer erfindungsgemäßen Unterschutzvorrichtung,
• 17, 18 Schnittansichten der Schachtsicherung gemäß 16,
• 19 eine Perspektivansicht einer weiteren Ausführungsform einer Schachtsicherung einer erfindungsgemäßen Unterschutzvorrichtung,
• 20 eine Schnittansicht der Schachtsicherung gemäß 19,
• 21 bis 24 Perspektivansichten weiterer Ausführungsformen einer Schachtsicherung einer erfindungsgemäßen Unterschutzvorrichtung,
• 25 eine geschnittene Perspektivansicht einer weiteren Ausführungsform einer erfindungsgemäßen Unterschutzvorrichtung, und
• 26 eine Perspektivansicht der Unterschutzvorrichtung gemäß 25.

The invention is described below by way of example with reference to the drawings. Show it:

• 1 2 shows a sectional view of an embodiment of an under-protection device according to the invention in a light shaft,
• 2nd 2 shows a bottom view of an embodiment of a protective device according to the invention,
• 3rd 2 shows a perspective view of a first embodiment of a corner connector of an under-protection device according to the invention,
• 4th 2 shows a perspective view of a second embodiment of a corner connector of an under-protection device according to the invention,
• 5 2 shows a sectional view of an embodiment of an under-protection device according to the invention,
• 6 2 shows a sectional view of a further embodiment of an under-protection device according to the invention,
• 7 2 shows a sectional view of a further embodiment of an under-protection device according to the invention,
• 8th 2 shows a perspective view of an embodiment of an under-protection device according to the invention,
• 9 2 shows a perspective view of a further embodiment of an under-protection device according to the invention,
• 10th 2 shows a perspective view of a further embodiment of an under-protection device according to the invention,
• 11 , 12th Perspective views of an embodiment of a shaft safety device of an under-protection device according to the invention,
• 13 , 14 Perspective views of a further embodiment of a shaft safety device of an under-protection device according to the invention,
• 15 , 16 Perspective views of further embodiments of a shaft safety device of an under-protection device according to the invention,
• 17th , 18th Section views of the shaft protection according to 16 ,
• 19th 2 shows a perspective view of a further embodiment of a shaft safety device of an under-protection device according to the invention,
• 20th a sectional view of the manhole protection according 19th ,
• 21 to 24th Perspective views of further embodiments of a shaft safety device of an under-protection device according to the invention,
• 25th a sectional perspective view of a further embodiment of a protective device according to the invention, and
• 26 a perspective view of the protective device according to 25th .

It should first be noted that the illustrated embodiments are purely exemplary in nature. In this way, individual features can be realized not only in the combination shown, but also in isolation or in other technically sensible combinations. For example, the features of one embodiment can be combined as desired with features of another embodiment.

If a figure contains a reference symbol, which is not explained in the directly associated description text, reference is made to the corresponding previous or subsequent explanations in the description of the figures. The same reference numerals are used for the same or comparable components in the figures and these are not explained again.

1 shows a light shaft 10th with a light well edge 12th and an upper edge 14 .

The edge of the light well 12th is opposite the top edge 14 offset inwards and downwards and forms a step or support edge for a light well cover 16 .

Between the light well cover 16 and the edge of the light well 12th a protective device is arranged. This includes a frame 18th and one in the frame 18th spanned network 20th .

The network 20th prevents foliage or small animals from entering through the light well cover 16 fall into the interior of the light well 10th reach.

As in the bottom view in 2nd can be seen, comprises the four frame segments 22 having frames 18th a clamping area 24th for fastening the protective device between the light shaft cover 16 and the edge of the light well 12th .

The clamping area 24th is flat, so the light well cover 16 even when the protective device is inserted, at least essentially flush with the upper edge 14 of the light well 10th closes. So there is no stumbling block for one User entering the light well cover 16 .

The frame 18th has a fastening device 26 for the network 20th on. The fastening device 26 includes a groove 28 in which a piping 30th is depressed.

The groove 28 is circulating. In order to achieve this in the simplest possible way, the frame segments can 22 be mitered.

The frame segments too 22 can through the piping 30th be connected.

Optionally, the frame 18th one as a groove 32 trained connecting channel to the frame segments 22 connect with each other.

An in 3rd shown corner connector 34 in the connecting channel 32 be introduced. The frame segments 22 can be plugged together.

The corner connector 34 can in particular comprise two L-shaped legs. The corner connectors 34 can in particular be pushed in, pushed in and / or driven in, for example by means of a hammer. This creates a firm and wobble-free, especially jamming, connection.

In particular, metallic frame segments can be made in this way 22 be connected via a plastic part.

At the corner connector 34 can optional nubs 36 be arranged. The pimples 36 can on the side surfaces, inner surfaces and / or outer surfaces of the corner connector 34 be provided.

To 4th the corner connector can also be clamped 38 exhibit.

As in 5 can be seen, the connecting channel 32 and the fastening device 26 for the network 20th be arranged one above the other.

For example, the groove 28 in which the network 20th with the piping 30th is clamped below the connecting channel 32 arranged.

The groove 28 can be particularly open at the bottom.

Alternatively, as in 6 is shown the groove 28 also above the connecting channel 32 be arranged.

The groove 28 can be open at the top, for example.

The groove 28 and the connecting channel 32 can also, as in 7 is shown to be arranged side by side.

In all shown variants of the 5 to 7 is the fastening device 26 always offset to the side of the clamping area 24th . The clamping area 24th can be designed flat in this way. Also the fastening device 26 below the level of the clamping area 24th arranged.

About the on the clamping area 24th overlying light well cover 16 the protection device is protected against gravity. The protective device can therefore not slip and / or unintentionally come loose.

Because there is no fixed connection between the protective device and the edge of the light well 12th and / or the light well cover 16 exists, the protective device can be quickly assembled or disassembled.

In the embodiment which in 8th is shown, the protective device comprises a transversely extending strip 40 . Two, three, four or more strips can also be provided. The bar 40 can be individually adjusted, in particular shortened, according to the dimensions of the protective device. The additional stiffening can increase the stiffness and prevent sagging of the net, especially with large protective devices.

Furthermore, the protective device can be an optional, for example a wire rope 41 comprehensive, shaft protection 42 exhibit. The wire rope 41 can in particular have a diameter between 1 mm and 10 mm, preferably 6 mm.

As an alternative to a wire rope 41 a chain, a cord or a flexible, articulated rod or sheet is also conceivable.

Through the wire rope 41 the shaft protection can be 42 place individually and the light well cover 16 easier to open for cleaning.

As in 9 is shown, a shaft protection can be found at each corner area 42 be arranged. The position of the chess lock 42 is basically arbitrary.

The attachment to the shaft can be done individually, for example, as indicated on the left side. Alternatively, it can also be attached to the shaft For example, as indicated on the right side, by means of a traverse 44 respectively.

To 10th can, for example, only two shaft safeguards 42 be provided, which are arranged centrally.

According to the 11 and 12th can the shaft protection 42 to the light well cover 16 be clamped. For this purpose, for example, clamping plates or clamping disks 46 be provided. The clamping plates 46 can be round or square, for example. Preferably, the clamping plates 46 comprise or consist of a metal material, for example a sheet metal, and / or a plastic material. For example, the clamping plate 46 be designed as a molded part, for example an injection molded part.

The shaft protection 42 can directly through the network 20th be performed. The network can do this 20th have a recess, which in particular only on site in the network 20th can be introduced, eg incised.

To prevent tearing, a tearing protection can be used 48 be provided, for example on the frame 18th can be attached, for example by means of a screw, a clamping element and / or a sliding block.

The pull-out protection preferably comprises 48 a metal, for example sheet metal, plastic, silicone and / or rubber material or consists of it. The pull-out protection 48 can only be on the top or bottom of the network 20th be arranged. Alternatively, the pull-out protection 40 the network on both sides 20th pinch. The network 20th is thereby fixed and / or held in particular.

The pull-out protection 40 can have a larger diameter than the wire rope 41 have, whereby this can be placed individually.

In the in the 13 and 14 The embodiment shown is a seal 50 intended. The seal 50 is used, for example, by pull-out protection 48 held. The shaft lock can be through a recess, in particular a hole, in the seal 50 be put.

According to the embodiments shown in the 15 to 18th are shown, the seal by means of an overlying sealing washer 52 respectively. The sealing washer 52 can be secured by weight, for example. It can also be fixed by means of the clamping washers 46 or the pull-out protection 48 respectively.

Alternatively, there is a floating bearing on the wire rope 41 conceivable.

Another embodiment is shown in FIGS 19th and 20th shown. The shaft protection 42 runs through the frame 18th .

The frame 18th can have a recess for this purpose, in particular a bore.

An optional sealing washer 52 made of metal, silicone, rubber or the like can provide a seal.

The shaft protection 42 in particular does not have to be on the light well cover 16 be clamped. For example, a clamping disc 46 even only on the light well cover 16 rest and over the wire rope 41 be fixed to the shaft.

The wire rope 41 can, for example, with a safety bolt 54 be pressed or jammed. Any other fastening options are also conceivable. For example, the securing bolt 54 firmly with the light well cover 16 connected, for example screwed. Alternatively, it can only rest on it.

To 21 can be a wire rope 41 the shaft protection 42 with the safety bolt 54 screwed and in particular secured or countered.

The clamping disc 46 can be loose on the light well cover 16 lie on.

To 22 can also use another clamping washer 46 for clamping onto the light well cover 16 be provided.

In the 23 and 24th Embodiments shown is the wire rope 41 in the safety bolt 54 pressed or jammed. The clamping disc 46 can on the light well cover 16 especially loose.

To 25th and 26 can the frame 18th a wall profile 56 exhibit. The wall profile 56 can extend down to by means of a sealing lip arranged thereon 58 a seal against the shaft or a downward stiffening 60 the light well cover 16 to accomplish.

A special wall profile 56 is not mandatory. A seal, for example by means of a sealing lip, can also be used 58 , between a normal frame segment 22 and the shaft or a stiffener extended downwards 60 the light well cover 16 respectively.

Optionally, a sealing element between the stiffening 60 and the shaft.

Reference list

10th

Light well

12th

Light well edge

14

Top edge

16

Light well cover

18th

frame

20th

network

22

Frame segment

24th

Clamping area

26

Fastening device

28

Groove

30th

Piping

32

Groove, connecting channel

34

Corner connector

36

Pimple

38

Clamping thread

40

strip

41

Wire rope

42

Manhole protection

44

traverse

46

Clamping plate, clamping disc

48

Tear protection

50

poetry

52

Sealing washer

54

Safety bolt

56

Wall profile

58

Sealing lip

60

stiffening

Claims (10)

Protection device for a light well cover (16), comprising a frame (18) and a network (20) spanned in the frame (18), wherein the frame (18) has a clamping area (24) for fastening the protective device between a light shaft cover (16) and a light shaft edge (12) and a fastening device (26) for the net (20). Protection device after Claim 1 , characterized in that the fastening device (26) has a groove (28). Protection device after Claim 1 or 2nd , characterized in that the fastening device (26) comprises a piping (30). Protection device according to one of the preceding claims, characterized in that the frame (18), in particular the clamping region (24) and / or a groove (28), is circumferential. Protection device according to one of the preceding claims, characterized in that the corner regions of the frame (18) are mitered, in particular cut. Protection device according to one of the preceding claims, characterized in that the fastening device (26) is spaced from the clamping area (24). Protection device according to one of the preceding claims, characterized in that the clamping region (24) is designed in the manner of a plate and / or has a maximum height of 10 mm. Kit for a protective device, in particular according to one of the Claims 1 to 7 , comprising at least one, preferably four, frame segment (s) (22) with a clamping area (24) for fastening the frame segment (22) between a light shaft cover (16) and a light shaft edge (12) and with a groove (28) Fastening device (26), a stretchable net (20), and a piping (30). System with a protective device according to one of the Claims 1 to 7 and a light well cover (16). Method for attaching a protective device for a light well cover (16) according to one of the Claims 1 to 7 , in which the clamping area (24) of the frame (18) is placed on the edge of the light well (12) and then the light well cover (16) is placed on the clamping area (24).

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