DE8705845U1 - Safety device for window cleaning work - Google Patents

Description

I 1 I * it 1 · t 4

&Ggr; t · ti« «# «

'&igr;&igr;<&igr;ii>i&igr;&igr; ti

'it

Description

nj _ e .ei 1 1 &igr; ^rri. ~--t ^. o^.l &igr;&igr;&lgr; _k , : _&iacgr; u,. j;.". c^.«.«-^ ~» &mdash;

IHC CJLJ-J-IIUUIIy UCÜllilU CXIIC OXUIICi-IIBJ-UaVUXXXUIlUUlIVj XUX &Ggr;&udigr;&Pgr;&Ogr;&udigr;&Egr;&Igr;"

cleaning work. This device is intended to promote the accident prevention regulation - construction work (VBG 37) § 12 (1) ·&zgr;\ flat of a fall protection during window cleaning work, especially at heights of over 5 m.

The device according to the invention is defined as a laterally acting protection device for which, in practical construction, a horizontally acting single load of 0.30 kN is to be applied in accordance with DIN 4420 Part 1 Section 5.2.2*2.

The safety device is suitable for all windows with window sashes hinged on one side (right or left) and any opening width. The device is also suitable for windows with window sashes hinged on both sides and opening in opposite directions.

The basic idea of the invention arises from the protection claim 1. The stands provided here stand on the window sill or the window frame. One end of the horizontal railing bar and the intermediate beam, if provided, is inserted between the window frame and the window sash of the open window. With the appropriate adjustment of the length of the |

The other end of the railing bar and, if applicable, the intermediate beam rests against the free window frame on which no window sash is attached, or the other end also protrudes between a window sash and the associated window frame.

&Idigr; I I I I · · · ·

III) · · < · &igr;

r f ■ i · · ··

&igr;&igr; ti &igr; 11 &igr;&igr; · · &iacgr;

&igr;&igr; «ti it

IHI end 01 μ ti

This safety device prevents a person standing on a ladder or on the windowsill from falling out of the window while cleaning the window.

According to claim 2, it is advantageous that in addition to the upper horizontal railing bar, at least one horizontal intermediate bar of variable length is provided between this and the lower end of the posts. This ensures protection against falling out between the posts and under the upper railing bar.

Although the posts can basically be attached to the railing bar and possibly the intermediate beam at a fixed distance from each other, it is advantageous if the distance between the posts can also be changed according to claim 3. The device can be adapted even better to window openings of different widths in this way.

In a preferred embodiment according to claim 4, the railing bar - and possibly the intermediate beam - consists of two metal profiles arranged telescopically and lockable against each other. This makes it easy to change the length of the railing bar and the intermediate beam.

According to claim 5, a stand can be attached to each of the profiles, whereby the change in the distance between the stands can be realized.

Further advantageous details of the invention emerge from claims 6 to 11.

Examples of embodiments of the invention are described below with reference to the drawing.

&EEacgr; tir-....

* * &diams;&diams; a 4 * 4| J ₁ IJi

»tit til · · 4

5 e- e tr i * f f

Fig. I is a schematic side view of the safety device!

Fig. 2 is a section along the line a-a of Fig. 1;

Fig. 3 is a schematic side view of a second embodiment;

Fig. 4 is a section along the line b-b of Fig. 3;

Fig. 5 is a plan view of the safety device according to Fig. 3.

/~\ The safety device consists of an upper horizontal railing bar 1 and two vertical posts 3 attached to it. Between the upper railing bar 1 and the lower end of the posts 3, a horizontal intermediate beam 5 is attached to the posts 3.

The railing rod 1 consists of an outer metal hollow profile 1a, for example with a square cross-section, and an inner metal profile 1b which is guided so as to be displaceable therein, for example also with a correspondingly smaller square cross-section. In a similar way, the intermediate beam 5 consists of an outer hollow profile 5a and an inner profile 5b. The profiles are expediently made of metal, preferably aluminum .

In both embodiments, the two uprights 3 are each attached, in particular welded, to the outer hollow profiles 1a and 5a. The left upright 3 according to Fig _{. 4} 1 or 3 could also be welded to the inner profiles 1b and 5b, whereby this left upright 3 would then either always be to the left of the outer profile 1a or 5a when the profiles are displaced relative to one another, or the upright 3 would have to be connected to the inner profiles 1b and 5b via webs which could be guided in lateral longitudinal slots of the outer profiles 1a and 5a.

For insertion between window frame and window sash, particularly in the embodiment according to Fig. 1, the outer free ends 1c and 5c of the railing rod 1 and the intermediate beam ^5f are flattened, in particular pressed together from one side over a certain, sufficient length.

In order to change the length and lock the profiles la and Ib or 5a and 5b against each other, in the embodiment |

According to Fig. 1 and 2, a threaded part 7, for example a threaded bolt, is attached to the inner profile 1b or 5b, which is guided in a longitudinal slot (not marked) of the outer profile 1a or 5a and projects outwards. There, a counterpart 8, for example a wing nut, is screwed onto this threaded part 7. When this wing nut is loosened, the profiles 1a and 1b or 5a and 5b can be moved against each other in the longitudinal direction | in order to release the safety device |

to the required width. The counterpart 8 or the wing nut is then tightened until it rests &igr;

tightened to the outer profile la or 5a, so that longitudinal displacement of the profiles against each other is prevented by frictional engagement. Instead of a threaded bolt 7 and a wing nut 8 screwed onto it, an internally threaded sleeve could also be provided as a threaded part 7 in mechanical reversal, into which a screw 8 could then be screwed, which would come into contact with the outer profile la or 5a with its head, for example a knurled head. These measures make it possible to adjust the railing rod 1 and the intermediate beam 5 to any required length. With a fixed arrangement of the posts 3 on the outer profiles la and 5a, the extension distance of the inner profiles 1b and 5b can correspond approximately to the clear distance between the posts 3.

In the example described above, see j; ^;

if the threaded element is not tightened sufficiently or * |

with corresponding transverse pressure on the lateral ends of the | terrain flank 1 or the' Z-Wisehonholmä S the

}i i !

&iacgr;*"».",&iacgr;&igr;&iacgr;&igr;'".

I ft» ti* ·····

■ t · · · ft · ' 1

I I » ■ ·■■·*·· · ·

device can be inadvertently pushed together to a smaller width. To prevent this risk, in the embodiment according to Figs. 3 to 5, several adjacent holes 9 are provided instead of the threaded parts in the inner profile 1b or 5b of the railing rod 1 and the intermediate beam 5. A spring-loaded snap pin 10 can engage in these holes 9, which is mounted and guided on the outer profile la of the railing rod 1 or on the outer profile 5a of the intermediate beam 5 or also on one of the posts 3 and reaches through the outer profile la or 5a. When the snap pin 10 engages in one of the holes 9, the safety device is securely locked against being pushed together sideways. To change the length or width in the transverse direction, the snap pin 10 can be pulled out of the hole 9, the inner and outer profiles of the railing post 1 and the intermediate beam 5 can be moved against each other in their longitudinal direction, and the snap pin 10 can be re-engaged in another hole 9 on the inner profile 1b or 5b, so that the device is locked in a new width.

In order to prevent the safety device from falling out between the frames of a window with even greater certainty, in the embodiment according to Fig. 3, additional short hollow profile pieces Id are attached, in particular welded, to the free ends Ic of the railing rod 1, which are open to the outside, i.e. to the window frame. In particular, these are short U-profiles, the distance between the legs of which is such that the profiles Id can grip the window frame laterally. This means that the safety device inserted between the window frame can no longer fall out inwards or outwards. Corresponding U-profiles can also be attached to the free ends 5c of the intermediate screen 5 (not shown in the drawing).

41 &iacgr;&iacgr; · &iacgr; ti · ilil

t I Il 1 · I « · ·

■ ■ · · 1 I ·

Also, corresponding, downwardly open short hollow profiles, in particular U-profiles 3a, can be attached to the lower free ends of the posts 3, which can overlap the lower crossbar of a window frame and thus fix the lower end of the safety device relative to the window frame.

These lower hollow profiles or U-profiles 3a can be mounted on the stands 3 with the help of a sleeve that surrounds the stand 3 and can be adjusted in height, whereby the sleeve can be locked to the stand 3, for example, by a screw 3b. When setting up the safety device, with the screw 3b loosened, the hollow profile 3a falls over the window frame by itself and, after locking the screw 3b, offers additional security, which can also be retained as a permanent setting. When used on a different window frame, the U-profile 3a can be loosened and re-locked at a different height.

In order to increase the safety against the device falling over inside a room, especially if the device stands freely on the floor and does not overlap a frame and/or if there are no side window cheeks or the like to clamp the device in or to overlap through their side U-profiles, an additional anchoring element in the form of a suction cup 11 can be attached to the railing bar 1 or the intermediate beam 5 or to one of the stands 3, which is attached to the railing bar 1, the intermediate beam 5 or the stand 3, for example by means of a chain 12 or another flexible holding element. This suction cup is pressed onto a window pane from the inside when the window is closed, so that the device is held to the window pane and secured against falling over inwards. The holding element between the actual device and the suction cup 11 must not be rigid, because otherwise the window pane could be dented . For this reason, a

■ 4 f I 1 I «II I

«1 t · JiH 4t I I III

i It t I ti iIHI I

&bull;J' ■■■···■«#·«

" io

A flexible, i.e. yielding, holding member, for example in the form of a chain 12, is used. In order to be able to bridge different distances between the device and a window pane, the holding member or chain 12 can be designed to be variable in length. Instead of a chain, another flexible holding member can be used, for example a coil spring or a yielding telescopic arrangement.

* * I * Mt i it &iacgr; t

t.t 'n' ! &igr; ill

Claims (10)

>■ 11 ^5 HELMUT^CH5ROEiIgR;. , K."L>US LEHMANN DIPU-PHY^." '·'* ... DIPL.-ING. PATENTANWÄLTE - EUROPEAN PATENT ATTORNEYS Dieter Benthaus bth-10,1 L/Ss 14 April 1987 Safety device for window cleaning work Protective equipment 1. Safety device for window cleaning work, ■ characterized in that it consists of a length-adjustable railing bar (1) and at least two supports (3) attached to it. 2. Safety device according to claim 1, characterized in that at least one length-variable horizontal intermediate rod (5) is provided below the railing rod (1). '3. Safety device according to claim 1 or 2, characterized in that the mutual distance between the supports (3) is variable. 4. Safety device according to one of the preceding claims, characterized in that the railing bar (I) - and optionally the intermediate beam (5) - consists of two telescopically arranged metal profiles (la, Ib or 5a, 5b) which can be locked against one another. !(CLAUS LEHMANN ' LIpÖWsKYSTrAsse IO HELMUT SCHRÖEtER ' BÖdKsÖASSE TEL. 07171 "5690 ' D->7070 SGHWABi OMONÖ telex! 5 212 248 pawc J. Deutsche Blnk AG Munich 70/37369 (bank code 700700 iO) Account number Manchen 1679 41*804 Telephone number via World Financial Service Munich" iSf.'ZJl-jVjÄS'-'Ä'jisti.Äi! Si'/e'bÖO! - S9'272 Ö4 81' Operator! '89*271 5668 ,·. i 4 > ··· (I ₁ IIOI ₁ »tintt* i« · «&igr;&igr; &bull; re« r " ² " &bgr; 5. Safety device according to claim 4, characterized characterized in that a stand (3) is attached to each of the profiles (la, 1b or 5a, 5b). 6. Safety device according to claim 4, characterized in that for changing the length and locking the profiles (la, 1b or 5a, 5b) against each other n a bolt fixed to the inner profile (Ib or 5b) in a Longitudinal slot of the outer profile (la or 5a) guided : threaded part (7) is provided, onto which a counterpart (8) ' .. until it rests on the outer profile (la, 5a) ' is. 7. Safety device according to one of the preceding claims, characterized in that the free ends (1c or 5c) of the railing bar (1) and/or the intermediate beam (5) are laterally flattened. j 8. Safety device according to claim 4, characterized in that g e k e &pgr;&pgr; - ! indicates that for changing the length and locking the profiles ; (la, Ib or 5a, 5b) against each other on the inner profile (Ib or 5b) Holes (9) are provided into which a snap pin (10) engages, which is attached to the outer profile (la or 5a) or to a stand (3) and extends through the outer profile (11). 9. Safety device according to one of the preceding claims, characterized in that hollow profiles, in particular U-profiles (Id or 3a) open to the outside or the bottom, are attached to the free ends (Ic or 5c) of the railing bar (1) and/or the intermediate beam (5) and/or to the lower ends of the posts (3). 10. Safety device according to claim 9, characterized in that the hollow profile (3a) is arranged on the stand (3) so that it can be adjusted in height and locked (screw 3b). l,f &igr; F &igr;. j &Idigr;&Kgr; "■ 4 1 * I * * « .i ± ft * t 4- * # ar &bull;&bull;&bull;&bull;«tat «t &ngr; i* Ii. Safety device according to one of the preceding claims, | characterized in that on the railing bar jf (i) or on the intermediate beam (5) or on one of the stands (3) by means of \ a flexible and, if necessary, length-adjustable holding link (chain 12) | a mammal (11) is attached. |