Solar cleaner, washing broom

Abstract

Claim for protection: Telescopic, water-fed cleaning device for photovoltaic systems, facades, window surfaces and similar surfaces, encompassing - a telescopic shaft (1) with integrated water guide, - a water hose (2) passed through or attached to the telescopic shaft (1), - an angle adapter (4) with external thread (4a) arranged at the front end of the telescopic shaft (1) for connecting a brush head (6) or another cleaning attachment, - and a brush head (6) that can be connected to the angle adapter (4), characterized by that at least one foldable hose hook (3) is arranged on the telescopic shaft (1), which is movable between a resting position (3c) and an unfolded position (3d) and is designed to receive the water hose (2), that a lock nut (5) is arranged on the external thread (4a), by means of which a screwed-on brush head (6) can be fixed in a selectable angular or rotational position relative to the telescopic shaft (1), and that the brush head (6) has a water spray bar (7) connected to the water supply on its forward-facing end face, which can be switched on and off separately via a shut-off valve (8a) arranged in the head water connection (8).

Description

[0001] The invention relates to a telescopic, water-bearing cleaning device for cleaning photovoltaic systems, facades, window surfaces and similar surfaces.

[0002] The cleaning device comprises a telescopic shaft with integrated water guide, a water hose attached to it, and a brush head located at the front end. Fold-out hose hooks are provided on the telescopic shaft, allowing the water hose to be secured in a resting position or in an extended holding position.

[0003] To attach the brush head, a lock nut is arranged on the thread of an angle adapter, with which the brush head can be fixed in a selectable orientation relative to the telescopic shaft.

[0004] The brush head has a water spray bar on its forward-facing front side, which can be switched on and off independently of the water delivery to the cleaning bristles via a separately operable shut-off valve. 1. Technical field

[0005] The invention relates to a telescopic cleaning device for photovoltaic systems, facades, window surfaces and similar, difficult-to-access surfaces.

[0006] The cleaning device comprises a telescopic shaft (1) with integrated water guide and a brush head (6) and is intended in particular for the manual external cleaning of larger areas using water. 2. State of the art

[0007] Telescopic cleaning devices with water-fed brush heads are well-known and are used particularly in the field of photovoltaic, facade and window cleaning.

[0008] However, the known devices have several practical disadvantages: • The water hose (2) connected to the brush head (6) often hangs down uncontrollably between uses or during transport and must be secured separately for storage. This impairs handling and leads to avoidable mechanical stress on the hose (2). • The brush head (6) is usually attached exclusively via a screw thread. With long extension lengths of the telescopic shaft (1), brush heads (6) can become detached due to vibrations or lateral forces, which can endanger users and nearby objects. • With known devices, water is dispensed predominantly in the center of the brush, so that dry surface treatment can occur when the brush moves forward. 3. Object of the invention

[0009] The invention is based on the objective of providing a telescopic cleaning device that • enables orderly and safe handling of the water hose (2), • allows reliable fixation of brush heads (6) or other cleaning attachments and enables their positioning independently of a full screw-in depth, • and ensures improved, uniform pre-wetting of the surface to be cleaned to avoid dry surface treatment. 4. Solution

[0010] The task is solved by a telescopic, water-fed cleaning device with the features described below. 4.1 Fold-out hose hooks on the telescopic shaft

[0011] At least two fold-out hose hooks (3) are arranged on the telescopic shaft (1). • The hose hooks (3) are connected to the telescopic shaft (1) via respective mounting clamps (3a). • Each movable hook piece (3b) is movable between a resting position (3c) and an extended position (3d). • In the unfolded position (3d) the water hose (2) can be placed around the hose hooks (3) so that it is neatly fixed to the cleaning device during operational interruptions, when parking or during transport. 4.2 Lock nut for securing the brush head

[0012] At the front end of the telescopic shaft (1) an angle adapter (4) with an external thread (4a) is arranged, on which the brush head (6) or another cleaning attachment can be mounted. • A lock nut (5) is arranged on the external thread (4a). • After screwing the brush head (6) into a desired position, the lock nut (5) is tightened against the brush head (6). • This allows the brush head (6) to be fixed in a freely selectable orientation without having to be fully screwed onto the external thread (4a) to a final position. 4.3 Separately switchable water spray bar

[0013] The brush head (6) has a water spray bar (7) on its forward-facing end face. • The water spray bar (7) is connected to the water supply of the cleaning device via the head water connection (8). • A shut-off valve (8a) is arranged in the head water connection (8), via which the water spray bar (7) can be switched on and off independently of the water supply to the cleaning bristles (6b). • The water spray bar (7) releases water in front of the actual cleaning surface, so that the surface is already wetted before contact with the cleaning bristles (6b). 5. Example of implementation

[0014] The cleaning device includes a telescopic telescopic shaft (1) which consists of several telescoping tube elements and has an integrated water guide for the water hose (2).

[0015] Two fold-out hose hooks (3) are arranged on the telescopic shaft (1), each pivotally attached via a mounting clamp (3a). The movable hook sections (3b) can move between a rest position (3c) and an extended position (3d). In the extended position (3d), the water hose (2) can be placed around the hose hooks (3) so that it remains fixed to the cleaning device.

[0016] At the front end of the telescopic shaft (1) an angled adapter (4) with an external thread (4a) is provided. A brush head (6) is mounted on this external thread (4a). A lock nut (5) arranged on the external thread (4a) allows the brush head (6) to be fixed in a desired angular position.

[0017] The brush head (6) comprises a brush body (6a) with cleaning bristles (6b). A water spray bar (7) is arranged on the front face of the brush body (6a) and is supplied with water via the head water connection (8). A shut-off valve (8a) located in the head water connection (8) allows the water spray bar (7) to be switched on and off separately. Reference symbol list 1 telescopic shaft 2 water hoses 3 Foldable hose hooks 3a Mounting clamp of the hook 3b Movable hook piece 3c Resting position of the hose hook 3d Unfolded position of the hose hook 4 quick-release fasteners 5 angle adapters 5a External thread of the angle adapter 5b Locknut 5c shaft side 5d peak 6 brush heads 6a Brush body 6b Cleaning bristles 7 Water spray bar 8 head water connection 8a Water spray bar shut-off valve

Claims

Claim: Telescopic, water-fed cleaning device for photovoltaic systems, facades, window surfaces and similar surfaces, comprising: - a telescopic shaft (1) with integrated water guide, - a water hose (2) passing through or attached to the telescopic shaft (1), - an angled adapter (4) with external thread (4a) arranged at the front end of the telescopic shaft (1) for connecting a brush head (6) or another cleaning attachment, - and a brush head (6) connectable to the angled adapter (4), characterized in that at least one foldable hose hook (3) is arranged on the telescopic shaft (1), which is movable between a resting position (3c) and an extended position (3d) and is designed to receive the water hose (2), and that a lock nut (5) is arranged on the external thread (4a).by means of which a screwed-on brush head (6) can be fixed in a selectable angular or rotational position relative to the telescopic shaft (1), and that the brush head (6) has on its forward-facing end face a water spray bar (7) connected to the water supply, which can be switched on and off separately via a shut-off valve (8a) arranged in the head water connection (8). Claim: Telescopic, water-fed cleaning device for cleaning surfaces, in particular photovoltaic systems, facades or window surfaces, comprising: - a telescopic shaft (1) with water guide, - a water hose (2) guided or attached to the telescopic shaft (1), - an angle adapter (4) with external thread (4a) arranged at the front end of the telescopic shaft (1) for receiving a cleaning attachment, characterized in that at least one foldable hose hook (3) is arranged on the telescopic shaft (1), which is movable between a resting position (3c) and an unfolded position (3d) and is designed to fix the water hose (2), and that a lock nut (5) is arranged on the external thread (4a), by means of which a screwed-on cleaning attachment can be fixed in a desired position relative to the telescopic shaft (1). Claim: Telescopic, water-fed cleaning device for cleaning surfaces, in particular photovoltaic systems, facades or window surfaces, comprising: - a telescopic shaft (1) with integrated water supply, - a cleaning attachment arranged at the front end of the telescopic shaft (1), characterized in that the cleaning attachment is designed as a brush head (6) and has a water spray bar (7) on its forward-facing end face, wherein the water spray bar (7) is connected to the water supply via a head water connection (8) and can be switched on and off independently of the water supply to the cleaning bristles (6b) by means of a shut-off valve (8a) arranged in the head water connection (8). Protection claim cleaning device according to claim 1, characterized in that the at least one hose hook (3) is pivotably connected to the telescopic shaft (1) via a mounting clamp (3a). Claim for protection of a cleaning device according to one of the preceding claims, characterized in that two hose hooks (3) are arranged at an axial distance from each other on the telescopic shaft (1). Claim for protection of a cleaning device according to one of the preceding claims, characterized in that the hose hook (3) in the rest position (3c) lies substantially flat against the telescopic shaft (1). Claim for protection of a cleaning device according to one of the preceding claims, characterized in that the lock nut (5) interacts positively with the external thread (4a) and enables the brush head (6) to be fixed in a position in which the brush head (6) is not fully screwed onto the external thread (4a). Claim for protection of a cleaning device according to one of the preceding claims, characterized in that the water spray bar (7) is connected to the water supply of the cleaning device via the head water connection (8). Claim for protection of a cleaning device according to one of the preceding claims, characterized in that the water spray bar (7) has several outlet openings distributed along its length. Claim for protection of a cleaning device according to one of the preceding claims, characterized in that the shut-off valve (8a) is designed as a manually operable shut-off element. Claim for protection of a cleaning device according to one of the preceding claims, characterized in that the telescopic shaft (1) comprises several pipe elements which are slidably mounted one inside the other.

Images