DE9411060U1 - Cleaning trolley - Google Patents

Description

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₁ _ KEIL&SCHAAFHAUSEN

PATENT ATTORNEYS

Description:

The invention relates to a trolley for holding utensils for cleaning purposes, such as buckets, tubs, bowls, baskets, mop presses, cleaning equipment, garbage bags and the like, as well as with a chassis mounted on castors and a support structure arranged thereon.

Such cleaning and disinfection trolleys are well known and are used commercially, particularly in hospitals, sanatoriums, old people's homes and similar institutions where large-scale floor cleaning is required. The previous trolleys of this type are welded together from tubular parts in the manner of a row frame. Castors are inserted into the tube ends of the frame, which are open at the bottom, and supports or holders for holding the cleaning utensils mentioned are either permanently attached or detachably attached to the frame. The mop press is usually held by a crossbar welded into the frame, which also stiffens the frame. The manufacture of such trolleys is complex, and their transport takes up a large volume.

The object of the invention is to propose a cleaning trolley of the type mentioned at the beginning, in which the disadvantages of the prior art are avoided and in particular efficient production, compact transportability as well as versatile and reliable function are ensured.

This task is essentially solved, for example, by the chassis and the support structure being designed as a modular plug-in system consisting of a self-supporting base tub or self-supporting base grid for the chassis and vertical support beams with attachment means for the aforementioned cleaning utensils for the support structure. The individual parts of the

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PATENT ATTORNEYS

Modular plug-in systems can therefore be shipped before assembly and only need to be plugged together on site. This saves a considerable amount of transport volume. Because the individual cart elements can be plugged in, assembly is also possible on site by unskilled workers. The modular plug-in system also ensures extraordinary versatility, because the final design of the respective cleaning cart to suit local needs is only determined by the user. In the simplest case, the cleaning cart therefore only consists of the chassis with its castors and, for example, two support beams inserted into the chassis at a distance from one another, to which the attachments for the cleaning utensils, e.g. holding frames, support grids, cross braces and the like, which are designed as hanging parts or have such, are attached. The base tub or the base grid is used in particular for setting up buckets for the cleaning fluids to be used.

In a special embodiment of the invention, the base tub has a stiffened base plate of a predetermined length with two horizontal cross members that can be attached to the front. The base grid can have cross members and two lateral longitudinal members with two cross members that can be attached to the front. By using base plates or base grids of different lengths, cleaning trolleys of different sizes can be put together. The base plate is easy to keep clean and can be provided with drainage holes. The horizontal cross members can provide the necessary stability of the chassis.

The modular plug-in system can be implemented particularly easily if the cross members are designed to accommodate, preferably insert, the castors on the one hand and

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PATENT ATTORNEYS

serve to hold, preferably to insert, the vertical support beams. The cross beams can be given the required cross-section for this purpose, i.e. on the one hand to keep the castors and vertical support beams secured by a plug connection and on the other hand to absorb the forces that occur when the cleaning trolley is used.

The cross members can be clamped to the front of the base plate using threaded rods, for example, after they have been appropriately attached to the base plate using grooves, for example. The cross members can also be attached to the ends of the longitudinal beams of the base grid.

According to a further feature of the invention, the cross members can also be used to accommodate a storage rack or the like that can be pushed under the floor panel or the cross members of the floor grid, e.g. accommodated in guide grooves of the cross members, or can be attached and possibly folded down. In this way, the standing area on the trolley can be extended if necessary, e.g. to support a garbage bag.

The plug connection between the cross members and the vertical support beams is preferably designed as a wedge plug system or has, for example, U-shaped connecting parts that can be connected to the cross members in a form-fitting manner or a screwable clamping piece or a raised part of the cross member for the form-fitting engagement in the interior of the support beam. All of these plug connection variants ensure simple assembly and simple removal if the cleaning trolley is to be transported to another location, for example, or if its individual parts are to be thoroughly cleaned, for example for disinfection purposes.
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Open or closed square profiles are preferably used for the support beams, the profile walls of which preferably have attachments on all sides and preferably arranged in rows. Square profiles of this type are known from shelving systems. They are therefore efficiently manufactured in large lengths, which also has an effect on the economic production of the cleaning trolley according to the invention.

The longitudinal bars of the fastening grid can be inserted with their ends into the cross members and secured against loosening by means of cross pins, e.g. the pin of the castors themselves.

In another design, a storage rack, which can preferably be folded down using a hinge, is inserted into a cross member from the outside with insertion ends and is secured there, for example, using a grooved retaining plate or is attached to the support beams from the outside using attachment parts, e.g. clamped in place. In this way, an additional storage option for containers and the like is created if required.

Accordingly, the hanging devices for the cleaning utensils are preferably equipped with hooks or tabs that fit into the hanging grooves of the vertical square profiles.
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Depending on the weight load and function, the hanging parts can have one or more hooks next to and/or above each other.

In order to ensure that the hanging parts remain securely in place, particularly when the cleaning trolley is moved, where it is exposed to vibrations, the invention further proposes that a safety clamping element be releasably inserted into the respective groove part that remains free after the hook has been hooked into the hanging groove.

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The hanging part can also be locked by means of a clamping lever after the hook has been attached.

For example, sliding handles can be attached to the upper ends of the support beams to make it easier for the operator to handle the trolley.

For hygiene reasons, the base plate, the support beams and the other metal parts of the cleaning trolley are preferably made of rust-proof, chrome-plated or plastic-coated steel or aluminum.

The buckets, tubs, bowls, baskets and similar containers can, however, be made of plastic that is resistant to cleaning agents for weight reasons.

For stability reasons, the cross members are preferably made of solid plastic or a die-cast metal such as aluminium, zinc, iron or brass.

Within the scope of the invention, it is also possible to equip the chassis with coupling elements for connection to a square cleaning trolley so that they can be moved together.

Further aims, features, advantages and possible applications of the invention emerge from the following description of embodiments based on the drawing. All described and/or illustrated features form the subject matter of the invention, either individually or in any meaningful combination, regardless of their summary in the claims or their reference back to them.

Show it:
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Fig. 1 the basic structure of a cleaning trolley according to the invention,

Fig.
2a, 2b in side view and front view a

cleaning trolleys equipped with hanging parts and containers according to the invention,

Fig.
3a, 3b a (partially sectioned) detailed view in

Area of a castor to illustrate the bracing of the cross members (Fig. 3a) or the attachment of the castor to a cross member (Fig. 3b),
15

Fig.

4a, 4b the possibility of inserting a swivel castor into a

Crossbeam,

Fig.

5a - 7b different possibilities of plug-in fastening

a vertical beam in a cross beam,

Fig.

8a, 8b a vertical support beam, cut vertically and horizontally, to illustrate the possibilities for attaching hanging parts,

Fig.
9 ac

10 a-c

11 a-c

12 a-c each in different views different

Examples of hanging parts with one, two or three hooks,

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PATENT ATTORNEYS

Fig. 13 shows an oblique view of the basic structure of a cleaning trolley according to another embodiment of the invention,

Fig.
14a
14b in side view and front view the

Basic structure of Fig. 13,

Fig.
15a
15b in side view and front view a cleaning trolley equipped with hanging parts and containers with a basic structure according to Fig. 13 to 14b,

Fig.

16a

16b Representations corresponding to Fig. 15a, 15b, but equipped with other receptacles

tet to create a disinfection cart,

Fig.
17a
to 17c in view from inside, side view and section CC

of Fig. 17a a profile designed according to the invention for use as support beams in cleaning trolleys according to the invention, which is however also suitable for other purposes, e.g. shelf construction, 30

Fig. 18 in cross section two profiles joined together via coupling elements to form a double element according to Fig. 17a to 17c as a support beam or the like,

Fig. 19 four profiles joined together via coupling elements to form a quadruple element according to Fig. 17a to 17c for use as a support beam or the like,

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Fig.

20

to 22g various views and sectional representations of a cross member to be used in the context of the invention,

Fig.

23a

23b the possibility of attaching and fastening a support beam to a cross member,

Fig.

24a

24b in comparison to Fig. 4a, 4b another option for inserting a castor into a cross member

while simultaneously defining the base grid,

Fig.
25a
up to 25c the possibility of inserting and fastening a

outer storage rack or support frame on a cross member,

Fig.
26a

up to 26g in side view and partially cut or

Top view of the possibility of inserting and fastening a fold-down storage rack or holding frame to the support beams, and 30

Fig.

27a

to 28c show different examples of suspension parts with two or three hooks, each in different views, depending on the load.

According to Fig. 1, the cleaning trolley consists in its basic structure of a chassis 1 with a support structure 2. The

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Chassis 1 consists of a base trough 4 resting on castors 3, which in turn is formed by a base plate 6 stiffened by cross beads 20 and a solid cross member 7 attached to the front of the base plate 6. The cross members 7 are clamped to the front ends of the base plate 6 with two parallel threaded rods 8, which can engage in corresponding grooves in the cross members 7. A vertical support beam 5 is inserted into the central square openings in the cross members 7 that are open at the top. The two vertical support beams 5 are provided all around at predetermined intervals with vertical hanging grooves or slots 14, into which, as will be explained later, hanging devices for the cleaning utensils can be hung. The castors 3 are inserted into the cross members 7 from below at the respective ends.

According to Fig. 2a and 2b, the basic structure shown in Fig. 1 is supplemented by hanging parts 16 and receiving containers 17 designed as baskets or buckets. In addition, a mop press 21 is suspended above one of the buckets by means of a cross brace 22 on the vertical support beams 5. The continuous cross brace 22 stabilizes the support beams 5 against each other. This can also be done, for example, by the hanging part 16 designed as a platform on which the receiving containers 17 designed as buckets stand. Fig. 2a also shows that the cross beams 7 can serve to accommodate a storage rack 9 that can be pushed under the base plate 6, e.g. accommodated or suspended in guide grooves of the cross beams 7.

Fig. 3a illustrates in detail how the cross beams 7 can be clamped to the front sides by means of threaded rods 8.

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Fig. 3b illustrates one method of fastening the castors 3. A threaded nut 24 is inserted through a side opening until its threaded hole is aligned with a vertical hole 25 in the cross member 7. Then the castor 3 is screwed into the threaded nut 24 with a threaded pin 26.

According to Fig. 4a and 4b, the threaded roller 3 is inserted into a vertical hole 27 of the cross member 7 by means of a plug-in snap connection. On the plug pin 28 of the swivel roller 3 there is a locking ring 29, which can snap into a corresponding groove 30 of the hole 27. By applying the appropriate force, the swivel roller 3 can be pulled down again.

Fig. 5a and 5b illustrate a wedge plug system 10 for fastening the vertical support beams 5 in a recess 31 of the cross beams 7. The wedge plug system 10 has a wedge member which can be inserted into a wedge-shaped recess after the lower end of the support beam 5 has been inserted into the recess 31. When the wedge member has assumed a corresponding press fit, the support beam 5 is held securely but detachably in the cross beam 7.

When fastening the support beams 5 in a recess 31 according to Figures 6a and 6b, a U-shaped connecting part 11 is pushed laterally into a correspondingly designed recess 32 of the cross member 7 and penetrates corresponding hooking grooves 14 of the support beam 5. The U-shaped connecting part 11 is then secured in place with a screw 33 and lock nut 24. The lock nut 34 is located in the area of a dividing joint 35 of the vertical support beam 5, which is designed as a box profile.

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In the type of connection for the support beams 5 to the respective cross beam 7 according to Fig. 7a and 7b, the cross beam 7 has a lateral recess 39. After inserting the support beam 5 into the recess 39, it can be fixed and screwed using a clamping piece 12. The clamping member 12 has inner ribs 36, which engage in corresponding hooking grooves 14 of the support beam 5.

Fig. 8a and 8b illustrate how hanging parts 16 equipped with hooks 15 can be hooked into the hooking grooves 14 of the profile walls 13 of the support beams 5. It is advantageous that the profile walls 13 are equipped with hooking grooves 14 all around, so that hanging parts 16 can be attached all around, which increases the versatility of the cleaning trolley according to the invention. It is also shown that a hanging part 16 can be secured in its position by a securing element 19 being releasably clamped into the remaining upper groove part 14'. In particular, it can be seen from the horizontal sections of Fig. 8a and 8b that the dividing joint 35 of the open box profile can be closed with a cover strip 18. The dividing joint 35 can also be used in some areas to hang and clamp additional support elements, such as cross braces and the like.

Fig. 9a to 10c illustrate that angled suspension parts 16 can also be used if the space conditions require it. For better support, the suspension parts 16 can have an S-shaped bend 38 on their edge 37 that comes into contact with the support beam 5.

The suspension element 16 is equipped with four hooks 15 according to Fig. 11a to 11c and is therefore used to absorb greater forces. The hooks 15 are arranged in a square.
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The elongated suspension part 16 according to Figures 12a, 12b has three hooks 15 in a line, which are interrupted by wave-shaped bends 38. The hooks 15 are of course each spaced apart in both the longitudinal and transverse directions, which corresponds to the spacing of the suspension grooves 14 in the support beams 5.

The basic structure of another cleaning trolley according to Fig. 13, 14a and 14b differs from that of Fig.

1, among other things, in that the chassis 1 is formed with a base grid 4' having cross members 41 and two lateral longitudinal members 42 instead of a floor plate 6, whereby the ends of the longitudinal members 42 can be inserted and secured into the cross members 7, for example as shown in Fig. 24a, 24b. The support members 5 are not formed from square profiles, but from a special profile which has a profile wall 13 which is curved outwards and provided with hooking grooves 14, the edges 44 of which are bent over as shown in Fig. 17a to 17c to form a stabilizing groove 45 which is open to the side and in the groove base 46 of which there are also hooking grooves 14. A push handle 40 is attached to each of the upper ends of the support members 5. The support beams 5 are fixed to the cross beams 7 as shown in Fig. 20 to 22g and Fig. 23a, 23b by placing them on a raised portion 43 of the cross beam 7, which engages in the profile interior in a form-fitting manner. The securing can then be carried out by means of screw 33 and lock nut 34.

According to Fig. 15a to 16b, the basic structure shown in Fig. 13 to 14a is supplemented by hanging parts 16 and receptacles 17 designed as tubs or buckets. In the cleaning trolley according to Fig. 15a, 15b, a mop press 21 is suspended from the vertical support beams 5 above one of the buckets by means of a cross brace 22. The continuous cross brace 22 also stabilizes the support beams 5 here.

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PATENT ATTORNEYS

against each other. In one cross member 7, for example, a storage rack 9 is inserted and secured from the outside, as shown in Fig. 25a to 25c. A similar storage rack 9 can be hooked into the upper area of the support beam 5, for example as shown in Fig. 26a to 26g. Both storage racks 9 can be designed to be folded down or up, so that they only take up the required space when they are needed in addition to the storage or storage options between the support beams 5. Since the plug connection is detachable, they can also be completely removed from the base frame if necessary and stored separately until they are used again.

The special profile of the support beams 5 in the cleaning trolleys according to Fig. 13 to 16b is illustrated in more detail in Fig. 17a to 17c. Due to the flat curvature of the profile wall 13 and the edges 44 angled inwards to form a stabilizing groove 45, the support beam is given considerable torsional rigidity and load-bearing capacity. Hanging elements 16 can not only be inserted into the hanging grooves or
-slots 14 of the profile wall 13, but also in the hanging grooves or slots 14 in the groove base 46 of the stabilizing grooves 45. The latter hanging grooves or slots 14 can, according to Fig. 18 and 19, also be used to join individual profiles of the support beams 5 together to form a double profile (Fig. 18) or a quadruple profile (Fig. 19) by means of U-shaped or angle-shaped coupling elements 52, 52' in order to achieve greater stability and/or a different appearance of the support beams 5. The coupling elements 52, 52' can either extend like rails over a substantial length of the individual support beams 5, or they can be individual, relatively short coupling pieces distributed at intervals over the height of the support beams 5, each of which can be hooked into the hanging grooves or slots 14 by means of hooks 15.

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grooves or slots T 4 are suspended in the groove base 46 of the stabilizing grooves 45. The shape and connection options of the profiles designed in this way for the support beams 5 are not only limited to use in a cleaning trolley according to the invention, but go far beyond these application options. In particular, use in shelving and furniture construction is also considered, as well as vertical supports for lighting, exhibition designs, information columns, signposts, guidance systems, partition walls, room dividers, wastepaper basket stands, mailbox stands, counters and service tables and the like.

Figures 20 to 22g illustrate in various views the special design of a cross member 7 for use in a cleaning cart according to the invention. Particularly noteworthy here are the elevation 43 for attaching a support beam 5 and the circular extensions in the area of the two ends where the castors 3 are inserted. Such cross members 7 can be easily manufactured, in particular from plastic, using injection molding technology.

Fig. 23a, 23b illustrate how a support beam 5 is placed on a raised portion 43 of a cross member 7 and then releasably secured by means of a transversely inserted screw 33 and lock nut 34.

From Fig. 24a, 24b it can be seen how the castors are inserted into a cross member 7 from below and at the same time serve with their plug pins 28 to secure the longitudinal bars 42 of the base grid 4' inserted from the side. An additional plastic sleeve 53 serves to secure the press fit, which can be inserted into the end of the tubular longitudinal bar 42 so that the corresponding through-channels or openings are aligned.

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PATENT ATTORNEYS

Fig. 25a to 25c explain the lateral insertion of a support grid 9 with its insertion ends 47 into a cross member 7. The protection against pulling out is ensured by a retaining plate 48 with a through-opening 54 and a connecting groove 55, whereby the retaining plate 48 can be secured against unwanted pulling out by means of a locking pin 49 engaging in the groove 55.

The hanging and securing of a storage rack 9 on the support beams 5 can be done, for example, as shown in Fig. 26a to 26g. After hanging the hanging part 16 in a hanging groove or slot 14, to which the support rack 9 is hinged via a hinge 51, a clamping lever 50 is moved from its open position shown in Fig. 26a into the position shown in Fig.

26c, whereby the hanging part 16 and thus also the support grid 9 are securely but releasably secured to the support beam 5. Fig. 26d to 26f illustrate how the support grid 9 can be transferred from a horizontal working position shown in Fig. 26c to the vertical rest position indicated in Fig. 26f. The essential point is that the support grid 9 in its working position can engage with a downward-pointing web 56 in a channel 57 of the hanging part 16, from which it can, however, be lifted out by means of the hinge 51 (Fig. 26d) and guided downwards past the channel 57 (Fig. 26e and 26f).

The other variants of suspension parts 16 according to Fig. 27a to 28c illustrate the diverse ways of designing such suspension elements. The suspension element 16 according to Fig. 27a to 27c is preferably used for hanging holding frames between the support beams 5, while the suspension element 16 according to Fig. 28a to 28c is intended for larger loads with three hooks 15.

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List of reference symbols:

1 chassis 2 Carrier structure 3 Castors 4 Base tub 4' Base tub 5 Beams 6 Floor panel 7 Cross member 8th Threaded rods 9 Storage racks 10 Wedge plug system 11 Connecting parts 12 Clamping piece 13 Profile walls 14 Hanging grooves or slots 14' Groove part 15 Hook 16 Hanging parts 17 Receptacles 18 Cover strips 19 Securing element 20 Cross beads, cross bars 20' Cross beads, cross bars 21 Mop press 22 Cross brace 23 opening 24 Threaded nut 25 drilling 26 Threaded pin 27 drilling 28 Plug pin 29 Retaining ring 30 Groove 06.07

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31 deepening 32 Recess 33 screw 34 Lock nut 35 Division joint 36 Inner rib 37 Edge 38 Deflection 39 Recess 40 Push handle 41 Crossbars 42 Longitudinal beams 43 Survey 44 Margins 45 Stabilization groove 46 Groove base 47 Insert ends 48 Retaining plate 49 Locking pin 50 Clamping lever 51 hinge 52 Coupling element 52' Coupling element 53 Plastic sleeve 54 Passage opening 55 Connection element

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Claims (17)

&ngr;&igr; G loo &igr; : V"J: ·'%···: ····: -&igr; 8 Keil&Schaafhausen PATENT ATTORNEYS Protection claims: 1. Cart for holding utensils for cleaning purposes, such as buckets, tubs, bowls, baskets, mop presses, cleaning equipment, garbage bags and the like, as well as with a chassis (1) mounted on castors (3) and a support structure (2) arranged thereon, characterized in that the chassis (1) and the support structure (2) are designed as a modular plug-in system consisting of a self-supporting base tub (4) or self-supporting support grid (4') for the chassis (1) and vertical support beams (5) which can be detachably plugged into these, with attachment means for the aforementioned cleaning utensils for the support structure (2). 2. Carriage according to claim 1, characterized in that the base pan (4) has a stiffened floor panel (6) of adjustable length with two horizontal cross members (7) that can be plugged onto the front side of this or that the base grid (4') has cross members (41) and two lateral longitudinal members (42) with two horizontal cross members (7) that can be plugged onto the front side of this. 3. Cart according to claim 2, characterized in that the cross members (7) serve on the one hand to receive, preferably to insert, the steering rollers (3) and on the other hand to receive, preferably to insert, the vertical support beams (5). 4. Carriage according to claim 2 or 3, characterized in that the cross members (7) are braced at the front to the floor panel (6) by means of threaded rods (8) or are attached to the ends of the longitudinal beams (42) of the base grid (4'). 5. Carriage according to one of claims 2 to 4, characterized in that the cross members (7) are designed to accommodate, for example, ₁₉ _ Keil&Schaafhausen PATENT ATTORNEYS a storage grate (9) or the like which can be pushed under the floor plate (6) or the crossbars (41) of the floor grid (4'), e.g. accommodated or suspended in guide grooves of the cross members (7) and, if necessary, folded down.
5 6. Carriage according to one of claims 2 to 5, characterized in that the plug connection between the cross members (7) and the vertical support beams (5) is designed as a wedge plug system (10) or has, for example, U-shaped connecting parts (11) that can be connected to the cross members (7) in a form-fitting manner or a screwable clamping piece (12) or has a raised portion (43) of the cross member (7) for the form-fitting engagement in the interior of the support beam. 7. Carriage according to one of the preceding claims, characterized in that the support beams (5) are designed as an open or closed square profile, the profile walls (18) of which preferably have hanging grooves (14) on all sides and preferably arranged in rows, or that the support beams (5) have a profile base (13) which is curved outwards and provided with hanging grooves or slots (14), the edges (44) of which are preferably bent over to form a stabilizing groove (45) which is open to the side, in the groove base (46) of which there are also hanging grooves or slots (14). 8. Cart according to one of the preceding claims, characterized in that the longitudinal beams (42) of the base grid (4') are inserted with their ends into the cross members (7) and are secured against loosening by means of cross pins, e.g. the plug pin (28) of the swivel castors (3) themselves. 9. Cart according to one of the preceding claims, characterized in that a storage rack (9) which can preferably be folded down via a hinge (51) is connected from the outside with insertion ends (47) 06.07.94 ^{&ngr;&EEgr;1&iacgr;&EEgr;} : j.··.: j &Lgr; 20 KEIL&SCHAAFHAUSEN PATENT ATTORNEYS inserted into a cross member (7) and secured there, e.g. by means of a grooved retaining plate (48) or is suspended from the outside on the support beams (5) e.g. in a clampable manner by means of suspension parts (16).
5 10. Cart according to one of the preceding claims, characterized in that the means for attaching the cleaning utensils have hooks (15) equipped with hooks (16) that fit into the hooking grooves (14). 11. Cart according to one of the preceding claims, characterized in that the suspension parts (16) have one or more hooks (15) next to and/or above one another. 12. Cart according to one of the preceding claims, characterized in that a securing element (19) can be releasably inserted into the respective groove part (14') remaining free after the hook (15) has been hooked into the hooking groove (14) or that the hooking part (16) can be locked by means of a clamping lever (50) after the hook (15) has been hooked in. 13. Cart according to one of the preceding claims, characterized in that push handles (40) are attached to the upper ends of the support beams (5). 14. Cart according to one of the preceding claims, characterized in that the floor panel (6), the support beams (5) and the other metal parts consist of stainless, chrome-plated or plastic-coated steel or aluminum. 15. Cart according to one of the preceding claims, characterized in that the buckets, tubs, bowls, baskets and similar receptacles (17) consist of plastic that is resistant to cleaning agents. 06.07.94 ^: ::M·:· "&igr; &Iacgr; i ihi i &ngr; 1 G loo i 2-&igr; Keil&Schaafhausen PATENT ATTORNEYS 16. Carriage according to one of the preceding claims, characterized in that the cross members (7) are made of solid plastic or of a die-cast metal, such as aluminum, zinc, iron or brass. 17. Cart according to one of the preceding claims, characterized in that the chassis (1) has coupling elements for connection to another cleaning cart.