EP2775038B1 - Shaft cover for covering a shaft - Google Patents

Description

The invention relates to a manhole cover for covering a shaft according to claim 1.

An ever-increasing problem with manhole covers as well as from the WO 2005/111319 A1 known to cover a shaft, (eg Gullideckeln) is that they are increasingly removed or stolen due to vandalism. This is not only a (financial) problem for the owner of the manhole or the manhole cover, but also dangers for the general public, because shafts are suddenly no longer covered, for example, in streets, but open, which humans and also (larger ) Objects can fall into the shaft.

The invention is based on the object to show a manhole cover that can be technically easily installed on a shaft and a (theft) protection against easy removal of the manhole cover of the manhole.

This object is achieved by a manhole cover according to claim 1.

In particular, the object is achieved by a manhole cover for covering a manhole, comprising at least one engagement detent element, wherein the engagement detent element in the engaged state of the manhole cover in a engaged detent position positively and / or non-positively prevents movement of the manhole cover relative to the manhole, and a locking device for locking the Engaging latching member, wherein the locking device is connected to the manhole cover, and wherein the locking device is formed and arranged such that the locking device in a locking position movement of the engagement latching member from the engagement detent position by a positive connection between a Sperraußenoberfläche of the locking device and a contact outer surface of the engagement detent element substantially locks.

An essential point of the invention is that the manhole cover can be technically easily installed by means of the engagement detent elements in a shaft and connected to the shaft and connected thereto and that a release of the engagement detent elements from the engagement detent position is not possible when the locking device in Locking position is located. As a result, the removal of the manhole cover from the shaft is much more difficult. To remove the manhole cover, the locking device must first exit the locking position. By the locking device is prevented that the manhole cover by a (simple) releasing the engagement detent elements from the engagement detent position removed and thus the manhole cover is stowed away. Thus, technically simple vandalism or theft by removing or stealing the manhole cover, which leads to significant dangers, for example, for road traffic at manhole covers, substantially prevented or at least considerably more difficult.

In one embodiment, the locking device is designed such that the locking device is frictionally connectable to the manhole cover. This makes it possible in a technically simple way that the locking device is securely connected to the manhole cover.

In a further embodiment, the locking device is designed such that the locking device with the manhole cover is releasably connectable. An advantage of this is that the connection between locking device and manhole cover is releasable again, so that the engagement detent elements can be released from the engagement detent position and thus the manhole cover can be removed from the manhole as far as, for example, access to the manhole is needed.

The locking device may comprise at least one locking element comprising the outer circumferential surface, wherein the locking element can be arranged in (direct) contact with the engagement detent element, in particular in (direct) contact with the contact outer surface of the engagement detent element. This makes it possible that the engagement detent element is arranged in contact with the locking element, whereby a secure connection between the locking element and the engagement detent element is ensured. This leads to a particularly secure locking of the engagement detent element.

The blocking element can be arranged between the engaging latching element and a closing element of the locking device functioning as an abutment and / or a closing element of the manhole cover acting as an abutment for supporting the locking device. The advantage of this is that the locking device can be designed to be flexible. For example, the locking device may be formed of a plastic that is flexible. Due to the ability to be arranged between the engagement detent element and the support element, the blocking element or the locking device is pressed against the support element during the movement of the engagement detent element out of the engagement detent position. Further movement of the engagement detent member to move it out of the engagement detent position is thereby prevented. Therefore, the locking device may be formed of a less expensive material which may be flexible.

In one embodiment, the locking device is designed such that the blocking element can be arranged in (direct) contact with the support element. An advantage of this is that the blocking element can be arranged such that a movement of the locking device in the attempt to move the engagement detent elements from the engagement detent position, in the Locking position is prevented. Thus, in attempting to move the engagement detents from the engagement detent position, there is no movement of the detent, thereby substantially preventing damage due to, for example, material fatigue.

In a further embodiment, the manhole cover comprises a fastening device for connecting the locking device to the manhole cover, the fastening device comprising a screw and a fastening element with a complementary internal thread, the screw being connected to the fastening element such that the locking device is in the locking position with the manhole cover is held releasably and by tightening the screw from a release position in which the locking device releases the engagement detent, is movable into the locking position. One advantage of this is that technically, a simple movement of the locking device from the release position into the locking position is possible, so that the manhole cover or its engagement detent element is locked, whereby a removal of the manhole cover from the manhole is prevented. In addition, the locking device is technically simply connected non-positively with the manhole cover. This is a purely manual movement of the locking device, i. Without tools, from the locking position by the non-positive connection between the screw and manhole cover not possible.

It is possible to use other movement elements or clamping elements such as knee lever, lever with detent position and / or eccentric instead of a screw and complementary internal thread as a fastening device to releasably fix the locking element or the locking device.

The screw may comprise a securing element, which is designed and arranged such that the fastening element is connected in the release position of the locking device with the screw. An advantage of this is that the fuse element can not come loose from the screw. As a result, the fastening element of the locking device, for example, in a manhole cover of a vertical shaft, not fall down, but it is always ensured that the fastener in the Release position of the locking device is connected to the manhole cover.

The screw can be designed and arranged such that after loosening the screw, the locking device from the locking position into the release position is movable. This makes it technically easy to release the locking device from the locking position again, so that the engagement latching elements are movable from the engagement detent position to remove the manhole cover, for example, in a revision of the shaft or the manhole cover.

The blocking element and the engagement detent element can each be designed in pairs, wherein the fastening device, in particular the screw, arranged between the locking elements, in particular arranged substantially centrally, is. One advantage of this is that little or no torques act on the fastener or screw when attempting to move the engagement detents out of the engaged latch position while the latch is in the latched position. An advantage of this is a particularly secure positioning of the locking device with respect to the manhole cover, in particular with respect to the engagement detent elements.

The manhole cover may include a passage opening for receiving the screw and connecting the locking device to the manhole cover such that a head of the screw is accessible from an upper surface of the manhole cover opposite the engagement detent element. An advantage of this is that technically easy loosening or tightening of the screw is possible, whereby the locking device from the locking position to the release position and vice versa is movable.

Fig. 1

Eine perspektivische Ansicht einer Ausführungsform der erfindungsgemäßen Schachtabdeckung;

Fig. 2

eine perspektivische Ansicht eines Teils der Unterseite der Schachtabdeckung aus Fig. 1;

Fig. 3

eine perspektivische Ansicht der Schachtabdeckung aus Fig. 1 bzw. Fig. 2 ohne dargestellte Verriegelungsvorrichtung;

Fig. 4

eine perspektivische Ansicht einer Ausführungsform der erfindungsgemäßen Verriegelungsvorrichtung;

Fig. 5

eine weitere perspektivische Ansicht der Verriegelungsvorrichtung aus Fig. 4;

Fig. 6

eine weitere perspektivische Ansicht der Verriegelungsvorrichtung aus Fig. 4 bzw. Fig. 5;

Fig. 7

eine weitere perspektivische Ansicht der Verriegelungsvorrichtung aus den Fig. 4-6; und

Fig. 8

eine weitere perspektivische Ansicht der Verriegelungsvorrichtung aus den Fig. 4-7.

Preferred embodiments will be apparent from the dependent claims. The invention will be explained in more detail with reference to drawings of exemplary embodiments. Show here

Fig. 1

A perspective view of an embodiment of the manhole cover according to the invention;

Fig. 2

a perspective view of a part of the underside of the manhole cover Fig. 1 ;

Fig. 3

a perspective view of the manhole cover Fig. 1 respectively. Fig. 2 without illustrated locking device;

Fig. 4

a perspective view of an embodiment of the locking device according to the invention;

Fig. 5

another perspective view of the locking device Fig. 4 ;

Fig. 6

another perspective view of the locking device Fig. 4 respectively. Fig. 5 ;

Fig. 7

another perspective view of the locking device of the Fig. 4-6 ; and

Fig. 8

another perspective view of the locking device of the Fig. 4-7 ,

In the following description, the same reference numerals are used for the same and the same parts acting.

Fig. 1 shows a perspective view of an embodiment of the manhole cover 90 according to the invention. Fig. 2 shows a perspective view of a portion of the bottom 92 of the manhole cover 90 from Fig. 1 , The manhole cover 90 has an upper side 91 and a lower side 92. The manhole cover 90 serves to cover a shaft (not shown). The shaft can, for example, run vertically in the street like a sewer manhole. But it is also conceivable that the manhole cover serves to cover a shaft which extends horizontally, or a shaft, the end of which is below the vertical shaft itself.

The manhole cover 90 has on two lateral opposite sides in each case two engagement detent elements 80, 81 (in FIG Fig. 1 and Fig. 2 only two of the engagement detents are shown). The engagement detents 80, 81 are in the installed state in an engagement detent position in which they positively and / or non-positively prevent movement of the manhole cover relative to the shaft by being in engagement with projections (not shown) of the shaft. The engagement detents 80, 81 are movable in a direction parallel to the top 91 and bottom 92, respectively. In this way, the engagement detents 80, 81 can be moved to the engagement detent position and out of the engagement detent position.

For blocking the engagement detent elements 80, 81, the manhole cover 90 has a locking device 1. The locking device 1 locks the engagement detents 80, 81 such that they are not substantially movable from the engagement detent position. In this way it is prevented that the manhole cover 90 can be moved relative to the manhole, in particular can be removed from the manhole.

Fig. 3 shows a perspective view of the manhole cover Fig. 1 respectively. Fig. 2 without illustrated locking device.

Fig. 4 to Fig. 8 show various perspective views of an embodiment of the locking device according to the invention 1. The locking device 1 comprises a trained as a fastening device 20 area, a subsequent thereto two connecting webs 17, 18 comprehensive range and in turn connected thereto as a barrier bar 15 area.

The fastening device 20 is formed substantially perpendicular to the connecting webs 17, 18. The locking bar 15 is located in one of the two connecting webs 17, 18 plane spanned. The locking bar 15 extends perpendicular to the two connecting webs 17, 18th

The locking device 1 is connected to the manhole cover 90 by means of the fastening device 20. The fastening device 20 comprises a fastening element 26 and a screw receiving opening 27. The connecting webs 17, 18 connect the locking bar 15 with the fastening device 20. Between the two connecting webs 17, 18, the locking device 1 has a comparison with the connecting webs 17, 18 thinner connection area.

The locking bar 15 comprises a mating locking element, i. a first blocking element 10 and a second blocking element 12. The blocking elements 10, 12 are arranged at two opposite ends of the blocking bar 15. They have rounded outer edges (Sperraußenoberflächen 11, 13) and protrude from the locking bar 15.

The locking device 1 is substantially mirror-symmetrical with respect to a plane which extends between the two connecting webs 17 and 18 and centrally through the screw receiving opening 27. The two locking elements 10, 12 or the two locking outer surfaces 11, 13 of the two locking elements 10, 12 have an equal distance from the fastening device 20 and the screw-receiving opening 27 on. However, an asymmetrical design of the locking device 1 is also conceivable.

The locking device 1 is by means of a screw 25 having an external thread, and the fastening device 20, the screw receiving opening 27 has a complementary thereto internal thread, arranged on the manhole cover 90 and connected to this (non-positively). When the screw is tightened, the locking device 1 is in the locking position. The locking device 1 is connected to the manhole cover 90 substantially immovably with respect to the manhole cover 90 without loosening the screw.

The screw 25 and the screw receiving opening 27 are located substantially midway between the first blocking element 10 and the second blocking element 12, i. the screw 25 or the screw receiving opening 27 has an equal distance from the first blocking element 10 and the second blocking element 12. Thus, when the locking device 1 is in the locking position, when the engagement detents 80, 81 are attempted to move from the engagement detent position, substantially no (effective) torques act on the locking device 1 and the screw 25, respectively.

In the in Fig. 2 illustrated locking position is the fastening device 20 of the locking device 1 in (immediate) In contact with the manhole cover 90. In the locked position, the two locking outer surfaces 11, 13 of the first locking element 10 and the second locking element 12 are in (direct) contact with the outer contact surfaces 83, 84 of the two engagement detents 80, 81. The contact outer surface 83, 84 are located on the side of the engagement detents 80, 81, which faces away from the projections of the shaft in the installed state, in which engage the engagement detents 80, 81 in the installed state.

The side facing away from the Sperraußenoberflächen 11, 13 side of the locking bar 15 is in the locking position in (immediate) contact with a support element, which acts as an abutment. The support element may be part of the locking device 1 or may only be part of the manhole cover 90.

In Fig. 1 and Fig. 2 the support element 93 consists of a transverse strut, which is rigidly connected to the manhole cover 90. Upon movement of the engagement detents 80, 81 from the engagement detent position, they push against the two detents 10, 12 and the detent bar 15, which in turn pushes against the support member 93 with its rear face. Thus, movement of the engagement detents 80, 81 from the engagement detent position is not possible as long as the detent bar of the locking device is between the engagement detents 80, 81 and the support member 93.

It is also conceivable that no support element is present, but the locking device 1 is designed so stable or rigid that it absorbs all forces that occur in an attempt to move the engagement detent elements from the engagement detent position and the connection with the manhole cover 90 in derives the manhole cover 90. It is also conceivable that a support element is a part of the locking device 1.

The locking device 1 is moved by the tightening of the screw 25, which is arranged in a passage opening 95 of the manhole cover and in the screw opening 27, from the release position to the locking position. After loosening the screw 25, which thereby moves upwards over the surface 91 of the manhole cover 90 with respect to the manhole cover 90, it is possible to remove the locking device 1 from the manhole cover 90 Locking position to move to a release position in which the locking device, the engagement latching elements 80, 81 releases. In the release position, the locking bar 15 (and also other elements of the locking device 1) is no longer between the engagement detent member 80, 81 and the support member 93. The engagement detents 80, 81 are thus free and can be disengaged from the engagement detent position Projections of the shaft stand, be moved. This allows the manhole cover 90 to be removed from the manhole.

The head of the screw 25 is accessible from the top 91 of the manhole cover 90, which is disposed opposite the engagement detents 80, 81. Thus, the screw 25 can be tightened and loosened again technically simply by a screwdriver. Advantageously, the head of the screw 25 is arranged in a recess of the top 91 of the manhole cover 90, so that the surface of the top 91 in the region of the head of the screw 25 is flat.

After loosening the screw 25, the screw 25 is beyond the top 91 of the manhole cover 90 addition, while the locking bar 15 is still between the engagement detents 80, 81 and the support member 93. Only by pushing the screw 25 into the passage opening 95 of the manhole cover 90 is the locking bar 15 of the locking device 1 (in the case of a vertical shaft covered by a manhole cover 90 above) moved downwards, thus releasing the engagement detents 80, 81. This increases the effectiveness of the locking device 1 as theft or Vandalismussicherung. Even after loosening the screw 25, the manhole cover 90 can not be easily detached from the shaft.

The screw 25 includes at a opposite end of the screw head a securing element 30. This is, for example, a pin which is perpendicular to the longitudinal direction of the screw 25. The pin can be removed from the screw 25 to connect the locking device 1 with the screw 25. The screw receiving opening 27 has a size such that the locking device with the screw 25 is always connected. The fuse element 30 has a size such that the fuse element 30 does not fit across the screw receiving opening 27. After the locking device 1 from the locking position in the Release position has been moved, hangs (in a vertical shaft) the locking device 1, so to speak on the securing element 30 and does not fall down further.

It is also conceivable that the locking device 1 secures only one engagement detent element 80 or more than two engagement detent element 81 or locks in the locking position.

The locking device 1 may be arranged such that when the screw 25 is tightened, the locking outer surfaces 11, 13 are disposed in (direct) contact with or spaced from the contact outer surfaces 83, 84. It is also possible that the locking bar 15 is arranged either in direct contact with the support element 93 or at a distance from the support element 93. At the latest in the locking position, when the engagement detents 80, 81 press against the locking bar 15 and this in turn against the support member 93, said elements are in direct contact with each other.

It is also conceivable that a sheet metal clip can be arranged by means of the screw 25 in a locking position. Such a locking clip is thus arranged in the locking position between the locking bar 15 and the respective engagement detents 80, 81.

Another advantage of the invention is that no parts can be lost during transport of the manhole cover, since all elements are connected to the manhole cover. This also facilitates the installation on site. The manhole cover only has to be placed on the shaft in such a way that the engagement detent elements engage. Now, the engagement detent elements can be locked by placing the locking device in the locking position.

LIST OF REFERENCE NUMBERS

1

locking device

10

first blocking element

11

Outer surface of the first barrier element

12

second blocking element

13

Sperraußenoberfläche of the second locking element

15

Load bar

17, 18

connecting web

20

fastening device

25

screw

26

fastener

27

Screw aperture

30

fuse element

80, 81

Engaging locking element

83, 84

Contact outer surface

90

manhole cover

91

Top of the manhole cover

92

Bottom of the manhole cover

93

Support element of the manhole cover

95

Port

Claims (11)

1. Manhole cover (90) for covering a manhole, comprising

   - at least one latching engagement element (80), wherein, with the manhole cover (90) in the installed state, the latching engagement element (80), in a latching engagement position, positively and/or non-positively prevents a movement of the manhole cover (90) relative to the manhole, and

   - a locking device (1) for locking the latching engagement element (80),

   characterized in that
   the locking device (1) is connected to the manhole cover (90), and wherein
   the locking device (1) is designed and can be arranged in such a way that the locking device (1), in a locking position, substantially blocks a movement of the latching engagement element (80) from the latching engagement position by means of a positive connection between a blocking outer surface (11, 13) of the locking device (1) and a contact outer surface (83, 84) of the latching engagement element (80).
2. Manhole cover (90) according to Claim 1, characterized in that
   the locking device (1) is designed in such a way that the locking device (1) can be non-positively connected to the manhole cover (90).
3. Manhole cover (90) according to Claim 1 or Claim 2,
   characterized in that
   the locking device (1) is designed in such a way that the locking device (1) can be releasably connected to the manhole cover (90).
4. Manhole cover (90) according to one of the preceding claims,
   characterized in that
   the locking device (1) has at least one blocking element (10) comprising the blocking outer surface, wherein the blocking element (10) can be arranged in (direct) contact with the latching engagement element (80), in particular in (direct) contact with the contact outer surface (83, 84) of the latching engagement element (80).
5. Manhole cover (90) according to one of the preceding claims, in particular according to Claim 4,
   characterized in that
   the blocking element (10) can be arranged between the latching engagement element (80) and a supporting element, acting as an abutment, of the locking device (1) and/or a supporting element (93), acting as an abutment, of the manhole cover (90) for supporting the locking device (1).
6. Manhole cover (90) according to one of the preceding claims, in particular according to Claim 5,
   characterized in that
   the locking device (1) is designed in such a way that the blocking element (10) can be arranged in (direct) contact with the supporting element (93).
7. Manhole cover (90) according to one of the preceding claims,
   characterized by
   a fastening device (20) for connecting the locking device (1) to the manhole cover (90), wherein the fastening device (20) comprises a screw (25) and a fastening element (26) with a complementary internal thread,
   wherein the screw (25) is connected to the fastening element (26) in such a way that the locking device (1), in the locking position, is releasably held with the manhole cover (90) and, by tightening the screw (25), can be moved from a release position, in which the locking device (1) releases the latching engagement element (80), into the locking position.
8. Manhole cover (90) according to one of the preceding claims, in particular according to Claim 7,
   characterized in that
   the screw (25) comprises a securing element (30) which is designed and arranged in such a way that the fastening element (26), in the release position of the locking device (1), is connected to the screw (25).
9. Manhole cover (90) according to one of the preceding claims, in particular according to Claim 7 or Claim 8,
   characterized in that
   the screw (25) is designed and arranged in such a way that, after loosening the screw (25), the locking device (1) can be moved from the locking position into the release position.
10. Manhole cover (90) according to one of the preceding claims, in particular according to one of Claims 4 to 9,
    characterized in that
    the blocking element (10) and the latching engagement element (80) are in each case formed in pairs,
    wherein the fastening device (20), in particular the screw (25), is arranged between the blocking elements (10, 12), in particular is arranged substantially centrally.
11. Manhole cover (90) according to one of the preceding claims, in particular according to one of Claims 7 to 10,
    characterized by
    a through-opening (95) for receiving the screw (25) and for connecting the locking device (1) to the manhole cover (90) in such a way that a head of the screw (25) is accessible from an upper side (91) of the manhole cover (90) that is situated opposite to the latching engagement element (80).

Images