CN112238839A - Scraper device - Google Patents

Abstract

The invention relates to a scraper device having a deflector plate element (22 a, 22 b), at least one nozzle element (26 a, 26a ', 26 b') and at least one channel element (30 a, 30 b) for being in fluid connection with said at least one nozzle element (26 a, 26a ', 26 b'). The invention proposes that, viewed along the main extension axis (54 a, 54 b) of said deflector elements (22 a, 22 b), said at least one nozzle element (26 a, 26a ', 26 b') is arranged on an end region (46 a, 46a ', 46 b') of said deflector elements (22 a, 22 b).

Description

Scraper device

Background

A scraper device has been proposed having a deflector element (Windabweisereinheit), at least one nozzle element and at least one channel element for fluid connection with the at least one nozzle element.

Disclosure of Invention

The invention relates to a scraper device having a deflector element, at least one nozzle element and at least one channel element for fluid connection to the at least one nozzle element.

The invention proposes that the at least one nozzle element is arranged on an end region of the deflector element, viewed along the main extension axis of the deflector element.

By "scraper device" should preferably be understood at least one component, preferably a subassembly, of the scraper blade, preferably of the glass scraper blade, and advantageously of the vehicle glass scraper blade. Preferably, the scraper device may also comprise the entire scraping blade, preferably the entire glass scraping blade and advantageously the entire vehicle glass scraping blade. Preferably, the scraper device is configured here at least as a part of a scraper blade in the form of a flat beam construction and/or at least as a part of a flat beam scraper and/or as a scraper blade in the form of a flat beam construction and/or as a flat beam scraper. Preferably, the scraper device is provided for use on a vehicle. Preferably, the scraper device is provided for cleaning a surface, preferably a glass on a vehicle. Preferably, the scraper device is coupled to a vehicle, preferably a scraper arm of the vehicle, for cleaning the vehicle window. "provided" is preferably to be understood as specially provided, specially designed and/or specially equipped. An "object is provided for a specific function" shall preferably mean that the object fulfils and/or carries out this specific function in at least one state of use and/or operation. The "operating state" is preferably intended to mean a state in which the scraper device is ready for and/or in operation for a scraping process and/or a scraping operation in which the scraping strip unit of the scraper device is preferably guided above the vehicle window and in this case advantageously rests against the vehicle window.

A "deflector element" is preferably to be understood as an element which is provided to block an inflow or a traveling wind of air acting on the scraper device and/or to press the scraping blade against a surface to be scraped, preferably a vehicle window. The deflector element is preferably configured differently from the spring rail, the wiper strip element, the wiper arm adapter and/or the spring rail. Preferably, the deflector element is at least partly and preferably mostly made of plastic. Preferably, the deflector element extends along the main extension axis of the wiper strip unit over at least a part, preferably at least a majority, of the maximum extension of the wiper strip unit in the operating state and/or the assembled state. Preferably, the baffle unit has at least one, preferably at least two, spoilers (spoeller). Preferably, the at least one spoiler of the spoiler unit is provided for blocking the traveling wind and has at least one concave inflow surface. Preferably, the at least one spoiler of the baffle unit, preferably the at least two spoilers of the baffle unit, extend in alignment over at least a major part of the maximum main extension of the baffle unit. The "main axis of extension" of the object is preferably understood to mean the axis of the object which runs parallel to the length of the longest edge of the smallest parallelepiped which completely surrounds the object. The "main extension direction" of the object is preferably understood to be a direction parallel to the main extension range. By "a substantial part of the extension" should preferably be understood at least 70%, preferably at least 80% of the extension.

Preferably, the scraper device has at least a scraper bar unit. Preferably, the wiper strip unit has a wiping base body with a wiping lip, which is made of at least one elastic material. The wiping lip is preferably provided for a contacting movement over the surface to be cleaned for cleaning the surface to be cleaned, preferably a glass surface, preferably a vehicle glass.

Preferably, the scraper device has at least one spring rail. Preferably, the spring rail is designed as a macroscopic (macroscopic) element having at least one extension which can be varied elastically by at least 10%, preferably by at least 20%, preferably by at least 40% and particularly advantageously by at least 50% in the normal operating state and/or in the assembled state, and which preferably generates a reaction force which is dependent on and preferably proportional to the variation of the extension and which counteracts the variation. The "assembled state" should preferably be understood to mean a state in which the scraper device is ready for a scraping process and/or a scraping operation. Preferably, the scraper device is arranged on and/or coupled to the scraper arm in the assembled state, wherein preferably a mechanical, electrical and/or fluidic coupling is present between the scraper arm and the scraper device.

Preferably, the scraper device has a channel unit with at least one channel-like recess and/or at least one tubular element, wherein the channel-like recess and/or the tubular element is provided for guiding a fluid, preferably scraping a liquid. Preferably, the channel unit is at least partially, preferably largely, configured as a hose and/or tube. The expression that the channel unit is provided for "conducting fluid" in at least one operating state and/or assembly state is preferably to be understood in the sense that the channel unit is provided for conveying a fluid, which has reached the ends of the channel unit, from one of the ends of the channel unit to an end of the channel unit different from the one of the ends of the channel unit in the operating state and/or assembly state, wherein the fluid preferably flows through the channel unit. Preferably, the channel unit has an at least substantially circular cross-section. Alternatively, it is conceivable in principle and technically straightforward to realize that the channel elements have a polygonal, preferably at least substantially square, cross section, an oval cross section or other cross sections which appear to be expedient to the person skilled in the art. Preferably, the channel element is at least partly bounded by the deflector element. Preferably, the channel unit is at least partially limited by a one-piece or multi-piece, preferably elastic, hose and/or a one-piece or multi-piece tube. Other designs of the channel elements which appear to be useful to the person skilled in the art are also conceivable, such as, for example, an arrangement of cavities coupled to one another of different types of components of the deflector element. Preferably, the channel unit has at least two, preferably exactly two channel sections. At least one channel unit, preferably each channel section, has at least one open end region. Preferably, at least one channel unit has at least one wiping liquid feed for connection to an external wiping water container.

An "end region" of an object is preferably to be understood as a region which extends beyond the object by a maximum of 20%, preferably a maximum of 10%, of the extension, wherein the region comprises a maximum of 30%, preferably a maximum of 20%, of the object in the direction of the extension of the object from the end of the extension of the object. Preferably, the scraper device comprises at least two, preferably exactly two nozzle elements. Preferably, at least one nozzle element is provided for discharging the wiping liquid. Preferably, at least one nozzle opening is arranged on at least one nozzle element. Preferably, the nozzle opening is a material portion of the nozzle element in which an opening for fluid discharge is arranged. Preferably, at least two, preferably exactly two, at least three, at least four or the like nozzle openings are arranged on the at least one nozzle element. Preferably, the at least one nozzle element is arranged to be fluidly connected with the channel unit in the end region, preferably by a plug connection. Preferably, the individual nozzle elements are arranged in the end region to be fluidically connected, preferably by means of a plug connection, with the individual channel sections of the channel unit. In principle, it is conceivable and technically straightforward to provide at least one, preferably each, channel section with an adapter which is provided for a plug connection to the respective nozzle element. Preferably, at least one channel unit has a seal, preferably a sealing edge, at a coupling point provided for coupling to one another or to another component, preferably at the ends of at least two channel sections, by means of which a fluid-tight coupling can be achieved. Preferably, the at least one nozzle opening of each nozzle element can be movably supported on the at least one nozzle element, in particular by an opening support element. Preferably, the at least one nozzle opening of the at least one nozzle element is provided for fluid discharge in a direction which is oriented away from the main plane of extension of the spring rail, in particular facing the surface to be cleaned. Preferably, the at least one nozzle opening of the at least one nozzle element is provided for fluid discharge in a direction which forms an angle of at least 30 ° with respect to the main plane of extension of the spring rail and is oriented in particular in the direction of the surface to be cleaned. Preferably, the main extension plane of the object is a plane extending parallel to the largest side of the smallest imaginary parallelepiped completely enclosing the object. Preferably, the at least one nozzle opening of the at least one nozzle element is oriented in the direction of the wiper blade adapter. Preferably, the scraper device has a scraper blade adapter which has a contact region with a component of the scraper device and is connected in a loss-proof manner with a component of the scraper device and is provided for forming a coupling region of the scraper blade component for coupling and/or contacting the component, preferably a scraper arm adapter, on a surface to be cleaned, preferably a vehicle window. Preferably, at least one nozzle element has at least one further nozzle opening. Preferably, the at least one further nozzle opening is oriented at least substantially perpendicularly to the at least one nozzle opening in the direction of the wiper strip unit. Preferably, at least one nozzle element has at least one plug-in projection (einsteckfortatz). Preferably, at least one plug-in projection is provided for plugging into the channel unit. Preferably, the nozzle element is connected to the channel unit, preferably the baffle unit, via at least one plug-in projection, preferably by a plug connection. Preferably, at least one nozzle element has a seal, preferably a sealing edge, at a connection point provided for connection to one another or to another component, preferably on the plug-in projection, by means of which a fluid-tight connection can be achieved. Alternatively or additionally, the at least one seal may also comprise a sealing ring, such as an O-ring and/or other seals familiar to those skilled in the art.

Preferably, the channel unit may comprise at least one distributor unit, in particular but not limited to a valve unit. Preferably, the distributor unit is provided for controlling the volume flow of the fluid through the channel unit into the end region of the deflector unit, preferably towards the nozzle element, preferably towards the at least one nozzle opening. Preferably, the distributor unit distributes the supplied wiping liquid, preferably in the wiping and/or spraying state of at least one nozzle element, in such a way that a similar wiping liquid pressure occurs at least two selected and/or all nozzle elements. It is conceivable that the distributor unit distributes the supplied wiping liquid, preferably in the wiping and/or spraying state of at least one nozzle element, in such a way that different wiping liquid pressures occur at least two selected and/or all nozzle elements. A good and/or uniform cleaning effect can advantageously be achieved.

An advantageous cleaning function can be achieved by the design of the scraper device according to the invention. Advantageous fluid evacuation can be achieved. A favorable uniform fluid discharge can be achieved. Advantageous fluid distribution can preferably be achieved during the scraping process. An advantageously large wetting surface can be achieved during the scraping process. A fluid distribution that is adapted to the size of the wiper blade can preferably be achieved by discharging the fluid into the end region of the deflector element. A large area of clean area of the glass can advantageously be achieved. Advantageously, the necessary mobility of the spoiler on the scraper device can be achieved without restriction.

It is furthermore proposed that the scraper device has at least one, in particular the above-mentioned, scraper bar unit and at least one scraper blade cover, which is arranged in the end region of the scraper bar unit, as viewed along the main extension axis of the scraper bar unit, and which is provided for guiding the at least one nozzle element.

Preferably, the at least one wiper strip unit has a maximum main extent which is longer than the maximum main extent of the deflector element, preferably longer than the sum of the maximum main extents of the at least two spoilers of the deflector element. Preferably, the at least one wiper blade end cap has a maximum main extension which is at least substantially equal to the maximum main extension of the at least one nozzle element. By "at least substantially identical" values it is understood that smaller values, i.e. values which are at most 40%, preferably at most 30% and particularly preferably at most 25% smaller than larger values, are smaller. Preferably, the maximum main extension of the at least one wiper blade end cap is at least 10%, preferably at least 20%, longer than the maximum main extension of the nozzle element. Preferably, the at least one wiper blade end cap is provided for a form-locking and/or force-locking connection, in particular a plug connection, with the at least one spring rail and/or wiper strip unit. Preferably, the at least one wiper blade end cap has at least one, preferably at least two latching elements for form-locking and/or force-locking connection, in particular latching connection, with the at least one spring rail. Preferably, the at least one wiper blade end cap surrounds or encloses the at least one nozzle element at least partially in a coupled, preferably snap-in, state with the at least one spring rail. Preferably, the at least one wiper blade end cap is provided for connection to the at least one spring rail in an end region, viewed along a main extension axis of the wiper strip unit. Preferably, the wiper blade end cap has at least one concave inflow face. Preferably, the inflow surface of the at least one wiper blade end cap is constructed and/or arranged, preferably in the coupled state of the wiper device, as an extension of the at least one inflow surface of the at least one deflector element, preferably of the at least one spoiler. Preferably, an inflow projection is arranged on at least one wiper blade end cap. Preferably, the inflow projection is arranged on a side of the wiper blade end cap facing away from the at least one spring rail and/or the wiper strip unit. The inflow projection of the wiper blade end cap preferably extends in a direction facing away from the main plane of extension of the deflector element, in particular in a direction facing away from the surface to be cleaned, preferably in a direction facing away from the wiper strip element. Preferably, the at least one wiper blade end cap bounds the at least one cavity.

Preferably, the at least one cavity of the wiper blade end cap extends inside the wiper blade end cap into the at least one inflow projection. Preferably, at least one cavity, preferably the part of the cavity extending into the inflow projection, is provided for at least partially accommodating the nozzle element. Preferably, a guide element is arranged on at least one nozzle element. Preferably, the guide element is at least substantially T-shaped. Preferably, at least one cavity, preferably the part of the cavity extending into the inflow projection, is provided for at least partially accommodating a guide element, preferably a nozzle element. Preferably, the at least one guide element is arranged in a linearly guided manner, preferably at least in the coupled state of the scraper device, in the portion of the cavity extending into the inflow projection. The "coupled state of the scraper device" is preferably intended to mean a state in which the at least one deflector element, the at least one spring rail, the at least one scraper strip unit, the at least one channel unit, the at least one nozzle element and the at least one scraper strip unit are connected to one another. It is achieved that uncontrolled, preferably rotational, movements of the nozzle element during cleaning can be avoided due to the excessively high fluid pressure. An advantageous stabilization of the nozzle element in the end region of the main extension axis of the deflector element can preferably be achieved by the wiper blade end cap. The longitudinal movement caused by the limited movement of the turbulence generator can be achieved directly by the nozzle element without limiting the spraying function.

It is furthermore proposed that the scraper device has at least one scraper blade end cap, in particular the one already mentioned above, which at least partially covers the deflector element and at least partially covers the nozzle element in the end region. Preferably, the at least one wiper blade end cap has at least one nozzle recess on a side opposite the inflow surface for at least partially receiving the at least one nozzle element. Preferably, the at least one nozzle recess is configured as an opening of the cavity bounded by the wiper blade end cap. Preferably, the at least one nozzle recess extends at least substantially from an end of the main extension of the wiper blade end cap to a center of the main extension of the wiper blade end cap. Preferably, the nozzle element is arranged at least partially inside a cavity, which is delimited by at least one wiper blade end cap, in the coupled state of the wiper device. Preferably, the nozzle element is arranged at least partially inside the cavity delimited by the at least one wiper blade end cap and at least partially, preferably mostly outside the cavity delimited by the at least one wiper blade end cap in the coupled state of the wiper device. Preferably, at least 75% of the at least one nozzle element, measured at least partially, preferably largely, preferably volumetrically, in the coupled state of the scraper device, is preferably contained inside an imaginary smallest parallelepiped (which just surrounds the at least one scraper blade end cap as well). Preferably, the at least one wiper blade end cap at least partially covers at least one end side of the deflector element. Preferably, the at least one wiper blade end cap covers at least a large part, preferably at least 80%, of the preferably T-shaped guide element of the nozzle element. Preferably, the at least one wiper blade end cap covers at least partially and preferably largely at least one side of the nozzle element facing the guide element. An advantageously protected end region of the deflector element can be achieved. An advantageous protection of the nozzle element in the end region of the deflector element can be achieved by the wiper blade end cap. Advantageously, the spray suitability of the nozzle element in the end region can be ensured.

It is furthermore proposed that the nozzle element has a stop which limits the rotation of the nozzle element in the end region relative to the deflector element. Preferably, the stop is arranged in the surroundings of the at least one nozzle opening of the nozzle element, preferably on the same side as the at least one nozzle opening on the nozzle element. Preferably, the stop is formed integrally with the guide element and/or the at least one nozzle opening. Preferably, the stop of the nozzle element limits the rotation of the nozzle element relative to the wiper blade end cap and/or the deflector element. Preferably, the stop limits the rotation of the nozzle element, preferably the nozzle opening, relative to the deflector element and/or relative to the wiper strip unit in the coupled state of the wiper device. Preferably, the stop limits the rotation of the nozzle element, preferably the nozzle opening, relative to the nozzle element in a constant fluid discharge direction. Preferably, the at least one wiper blade end cap forms a stop surface for limiting the movement of the stop. Preferably, the stop is provided for stopping on the stop surface upon rotation of the nozzle element. Preferably, the stop is configured as a preferably planar projection of the nozzle element. An uncontrolled rotation of the nozzle element in the end region of the deflector element, preferably during cleaning, can advantageously be avoided.

It is furthermore proposed that the channel elements are arranged on the outside of the baffle element for guiding the fluid along the baffle element from a middle region of the baffle element, preferably from the middle region to an end region of the baffle element. Preferably, in this embodiment, the channel element is constructed separately from the baffle element. The channel unit is preferably configured as a hose in this embodiment. Preferably, the channel unit is connected to the deflector unit, preferably to the outside of the deflector unit, by means of at least one connecting element, such as for example a clip element. As an alternative, it is conceivable in principle for the channel element to be adhesively bonded to the outside of the deflector element, preferably to the outside of the deflector element facing away from the inflow surface and/or the spring rails. An advantageous fluid supply to the nozzle element can be achieved. An advantageously accessible connection of the nozzle element to the channel unit can be achieved. An advantageously easy-to-maintain connection of the nozzle element with the channel unit can be achieved. An advantageously easily replaceable channel unit for supplying the nozzle elements in the end region of the deflector element can be realized.

It is furthermore proposed that the scraper device has at least one bearing unit for at least partially movably bearing the nozzle element in the end region. Preferably, the scraper device has at least one bearing unit for each nozzle element. Preferably, the support unit is arranged on the channel unit, preferably on at least one end of the channel section. Preferably, the support unit is arranged on the deflector element, preferably on an end region of the deflector element, at least in the coupled state of the scraper device, viewed along the main extension axis of the deflector element. Preferably, the support unit is arranged on the at least one nozzle element. In principle, it is conceivable and technically feasible to mount the at least one nozzle opening movably, preferably pivotably, on the at least one nozzle element. Preferably, the scraper device has at least one, preferably one, opening support element for each nozzle opening. Preferably, the at least one opening support element is provided for movably, preferably pivotably, supporting the at least one nozzle opening relative to the nozzle element. Preferably, the opening support element can be configured at least partially, preferably largely, as a pivot bearing, for example but not limited to as a ball joint bearing or at least partially as a hinge. An advantageous spraying function of the nozzle element, preferably with different spraying directions, can be achieved. A nozzle element can be realized which can be advantageously moved in order to discharge fluid from the end region of the deflector element. The fluid discharge direction from the end region of the deflector element can advantageously be adapted precisely to the field of vision of the user.

Furthermore, it is proposed that the nozzle element is designed to be at least partially electrically adjustable and/or electrically heatable for the adjustable discharge of the fluid from the end region of the baffle plate unit. Preferably, the nozzle element is at least partially electrically heatable. Preferably, the scraper device has at least one heating element. A "heating element" is preferably intended to mean an element which converts input energy, preferably electrical energy, into heat and is provided for discharging the heat into its surroundings. The heating element is preferably arranged in the surroundings of the nozzle element. Preferably, the heating element is provided for tempering at least one nozzle element. Preferably, the at least one heating element is arranged on the at least one nozzle element in the surroundings of the nozzle opening. Preferably, the at least one heating element is at least partially, preferably largely, designed as a heating resistor. The at least one heating element is formed, for example, by a heating wire and/or a heating foil and/or a preferably electrically conductive heating ceramic and/or a preferably electrically conductive heating paste. Preferably, the scraper device has at least one line for electrical energy to the at least one heating element. Favorable fluid discharge conditions can be achieved. By means of the heating element, the scraper device can fulfill at least one advantageous heating function and ensure suitability for spraying in an advantageously large temperature range. Fluid venting can be achieved at low ambient temperatures, preferably below 4 ℃. Cleaning of the vehicle glazing can preferably be achieved with wiping liquid discharge in an external temperature below 0 ℃ and/or below the freezing point of water. Preferably, the nozzle element is designed to be at least partially electrically adjustable for the adjustable discharge of fluid from the end region of the deflector element. Preferably, the scraper device has at least one actuator element. Preferably, the at least one actuator element is at least partially and preferably largely designed as an electric motor. Preferably, the scraper device has at least one line for electrical energy to the at least one actuator element. Preferably, a transmission unit is arranged on the actuator element, which transmission unit is provided for transmitting a force from the actuator element to the component for moving the component, such as, for example, the at least one nozzle element and/or the at least one nozzle opening. Preferably, at least one structural element is arranged on the nozzle element, preferably on the plug-in projection and/or on the at least one movably mounted nozzle opening. Preferably, the structural element is provided for forming a clamping surface for the actuator element and/or the transmission unit. Preferably, the actuator element is provided for at least partially moving the nozzle unit. Preferably, the actuator element is provided for at least partially moving the nozzle opening. Preferably, the actuator element is provided for transmitting a force, preferably a rotational force and/or a pivoting force, via the structural element to the at least one nozzle element and/or the at least one nozzle opening. Preferably, the nozzle element, preferably the nozzle opening of the nozzle element, is electrically adjustable by means of an actuator element. In principle, it is conceivable and technically feasible without problems to arrange the at least one actuator element on at least one nozzle opening of the nozzle element. Preferably, the at least one actuator element is provided for applying a force, preferably only, to the at least one nozzle opening. Preferably, the actuator element is provided for pivoting and/or rotating the at least one nozzle opening. A fluid discharge direction which can be advantageously controlled can be achieved. It is possible to achieve an advantageous discharge of fluid from the end region of the deflector element over the surface to be cleaned for the entire scraper device.

It is furthermore proposed that the nozzle element has at least two nozzle openings for discharging at least two different volume flows from the end region in the direction of a region in the middle, preferably a middle region, of the main extension of the deflector element. The nozzle opening preferably has a tapering channel end in its interior. Preferably, the at least two different nozzle openings have at least two fluid discharge directions differing by at least 10 °. Preferably, at least two different nozzle openings have different geometries, preferably internal geometries. Preferably, the internal geometries of the nozzle openings, preferably of the nozzle elements, differ in different maximum cross-sectional dimensions perpendicular to the direction of fluid flow at the tapering channel ends, preferably for discharging at least two different volume flows of fluid, in particular from the end regions in the direction of a middle region, preferably a middle region, of the main extension of the deflector element. Preferably, the internal geometries of the nozzle openings, preferably of the nozzle elements, differ in that the different maximum lengths of the tapering channel ends, preferably in the direction of the fluid flow, preferably serve to discharge fluid from at least two different volume flows, in particular from the end regions in the direction of a middle region, preferably a middle region, of the main extension of the deflector element. Preferably, the internal geometries of the nozzle openings, preferably of the nozzle elements, differ by different inner wall structures, preferably for discharging at least two different volume flows of fluid, in particular from the end regions in the direction of the middle region, preferably the middle region, of the main extension of the deflector element. Advantageous drainage of the fluid from the end region of the deflector element into the field of view and to the outside of the field of view of the user can be achieved. Advantageously, the scraper device may be wetted by the scraping liquid on the end of the scraper device.

Furthermore, a scraper system with a scraper arm and with a scraper device according to the invention is proposed. Preferably, the wiper arm includes at least one wiper arm adapter for coupling with the wiper blade adapter. An advantageous combination of a wiper arm and the wiper device can be achieved. An advantageous wiping liquid supply can be achieved in the end region of the deflector element by means of a wiping arm for the at least one nozzle element.

Furthermore, a method for assembling a scraper device according to the invention is proposed. The wiper strip unit is preferably connected to the spring rail in at least one method step, preferably by pushing in. Preferably, in at least one method step, the at least one deflector element, preferably at least one spoiler element, is connected to the wiper strip element, preferably to the spring rail, by means of a movement. Preferably, in at least one method step, the channel element is connected to the baffle element. Preferably, in at least one method step, the at least one nozzle element is connected to the channel unit, preferably by means of a plug connection, preferably of at least a part of the nozzle element to the channel unit. Preferably, in at least one method step, at least one nozzle element is at least partially inserted into the channel unit. Preferably, the at least one wiper blade end cap is inserted onto the spring rail in at least one method step. Preferably, in at least one method step, the at least one wiper blade end cap is connected to the at least one spring rail by a snap-in connection. An advantageous intuitive, preferably uncomplicated and/or easily handled mounting of the nozzle element in the end region of the deflector element can be achieved.

The scraper device according to the invention, the scraper system according to the invention and/or the method according to the invention should not be limited to the above-described applications and embodiments. In particular, the scraper device according to the invention, the scraper system according to the invention and/or the method according to the invention may have a number which differs from the number of individual elements, components and units and method steps mentioned here in order to meet the mode of action described here. Furthermore, in the value ranges given in the present disclosure, values lying within the mentioned limits should also be regarded as disclosed and can be used arbitrarily.

Drawings

Other advantages result from the following description of the figures. Two embodiments of the invention are shown in the drawings. The figures, description and claims contain a large number of combined features. The person skilled in the art can also appropriately consider these features individually and conclude other combinations of significance. In which is shown:

figure 1 shows in an exploded view a scraper system according to the invention with a scraper device according to the invention and with a scraper arm,

figure 2 shows a scraper device according to the invention in a schematic view,

fig. 3 shows a scraper device according to the invention in a schematic view, and

figure 4 shows a method according to the invention for assembling a scraper device according to the invention in a schematic view,

fig. 5 shows an alternative scraper device according to the invention in an exploded view.

Detailed Description

Fig. 1 shows a scraper system 40a with a scraper arm 12a and with a scraper device 10 a. The wiper arm 12a includes a wiper arm adapter 14 a. It is conceivable for the wiper arm 12a to have two components, namely a hose guide for guiding, for example, a fluid supply hose and/or an electrical supply line. The wiper arm includes at least one fluid supply hose (not shown). In particular, the wiper arm comprises at least one electrical supply line (not shown). The scraper device 10a includes a scraper blade adapter 16 a. The scraper device 10a comprises two spring rails 18a, 18 a'. The scraper device 10a comprises two scraper blade end caps 20a, 20 a'. The scraper device 10a comprises a deflector element 22 a. The scraper device 10a comprises a scraper bar unit 24 a. The scraper device 10a comprises at least one channel unit 30 a. Said scraper means 10a comprises at least one nozzle element 26a, 26 a'. The scraper device 10a comprises two nozzle elements 26a, 26 a'. In particular, the wiper arm comprises at least one electrical line for supplying electrical components (not shown) with energy.

The deflector element 22a has two spoilers 28a, 28 a'. The deflector element 22a, in particular the two spoilers 28a, 28 a', has an in particular concave inflow surface 86 a. The channel element 30a is at least partially arranged in the deflector element 22 a. Channel segments 32a, 32a 'are arranged in the turbulators 28a, 28 a', respectively. The channel unit 30a is at least partially and preferably largely designed as a channel-like recess in the deflector unit 22 a. The channel unit 30a is arranged for being in fluid connection with said at least one nozzle element 26a, 26 a'. Preferably, the channel unit 30a has, in particular in the wiper blade adapter 16a, a flexible interface module, in particular a coupling element 82a, for fluidically connecting the channel unit 30a in the deflector unit 22a with the fluid container.

Viewed along the main extension axis 56a of said scraper bar unit 24a, said at least one scraper blade end cap 20a, 20a 'is arranged in an end region 58a, 58 a' of said scraper bar unit 24 a. At least one wiper blade end cap 20a, 20a 'at least partially covers the deflector element 22a in the end region 46a, 46 a'. At least one wiper blade end cap 20a, 20a ' at least partially covers at least one end side 48a, 48a ' of said deflector plate element 22a in an end region 46a, 46a '. Said spring rails 18a, 18a ' have, on the ends of their primary extension, respectively, at least two catch recesses 50a, 52a, 50a ', 52a '. Said at least one wiper blade end cap 20a, 20a 'is provided for snap-coupling with the snap recesses 50a, 52a, 50 a', 52a 'of the spring rails 18a, 18 a'.

Fig. 2 shows a scraper device 10 a. In particular, at least one nozzle element 26 a' is shown in fig. 2. Viewed along the main extension axis 54a of said deflector element 22a, said at least one nozzle element 26a, 26a 'is arranged on an end region 46a, 46 a' of said deflector element 22 a. Said at least one nozzle element 26a, 26a ' has at least two nozzle openings 34a, 34a ', 42a '. Each nozzle element 26a, 26a ' has two nozzle openings 34a, 42a, 34a ', 42a '. Nozzle openings 34a, 34a 'are provided for discharging at least two distinct volumetric flows from, in particular, end regions 46a, 46 a' of deflector plate elements 22a, in particular towards the glass to be cleaned, in the direction of intermediate region 62a of the main extension of deflector plate elements 22 a. Nozzle openings 34a, 34a ', of both nozzle openings 34a, 34 a', 42a ', in particular the largest internal diameter of the fluid channel in nozzle opening 34a, 34 a', are configured to be larger than the other nozzle opening 42a, 42a 'of both nozzle openings 34a, 34 a', 42a ', in particular the largest internal diameter of the fluid channel in nozzle opening 42a, 42 a'. The maximum length of the fluid channel in one of the two nozzle openings 34a, 34a ', 42 a' is configured to be greater than the maximum length of the fluid channel in the other one of the two nozzle openings 34a, 34a ', 42 a'. The nozzle openings 34a, 34a 'of the two nozzle openings 34a, 42 a', are oriented facing the intermediate region 62a of the scraper device 10a, preferably of the deflector plate elements 22a, up to a maximum deviation of 60 °. The other nozzle opening 42a, 42a 'of the two nozzle openings 34a, 34 a', 42a ', is oriented facing the end region 58a, 58 a' of the scraper bar unit 24a, up to a maximum deviation of 60 °.

Nozzle elements 26a, 26a 'have stops 44a, 44 a' that limit the rotation of nozzle elements 26a, 26a 'relative to deflector element 22a at end regions 46a, 46 a'. The wiper blade end caps 20a, 20a 'have a stop face 60a, 60 a' which limits the movement, in particular the rotation, of the stop 44a, 44a 'of the nozzle element 26a, 26 a'.

The nozzle elements 26a, 26a 'have the insertion projections 36a, 36 a'. The nozzle elements 26a, 26a 'are partially arranged in the turbulators 28a, 28 a'. The nozzle elements 26a, 26 a' are partially arranged in channel elements 30a within the deflector plate elements 22 a. The nozzle elements 26a, 26a ' are arranged partially in the channel segments 32a, 32a ' of the channel unit 30a, respectively, within the turbulators 28a, 28a ' of the deflector element 22 a. The plug-in protrusions 36a, 36a 'of the nozzle elements 26a, 26 a', respectively, are at least mostly arranged in the channel segments 32a, 32a 'of the channel unit 30a within the turbulators 28a, 28 a' of the deflector plate unit 22 a. It is conceivable that the nozzle elements 26a, 26a 'are fitted directly into the scraper liquid-guiding turbulators 28a, 28 a' on the end of the scraper device 10 a.

Fig. 3 shows an arrangement in which at least one wiper blade end cap 20a, 20a 'is in an end region 46a, 46 a' of a deflector element 22 a. At least one wiper blade end cap 20a, 20a 'at least partially covers the nozzle element 26a, 26 a'. The nozzle elements 26a, 26a 'are partially arranged between the deflector elements 22a and the scraper blade end caps 20a, 20 a'. The wiper blade end caps 20a, 20a 'have nozzle recesses 90a, 90 a'. The nozzle elements 26a, 26a ' are partially arranged in the nozzle recesses 90a, 90a ' of the wiper blades 20a, 20a '. The nozzle recesses 90a, 90a ' are dimensioned so as to introduce the nozzle elements 26a, 26a ' without the insertion projections 36a, 36a '.

The side of the nozzle elements 26a, 26a 'opposite to the nozzle openings 34a, 34 a', 42a 'is arranged coveringly by the wiper end caps 20a, 20 a'. The nozzle elements 26a, 26a 'are at least partially arranged within the scraper endcaps 20a, 20 a'. At least one wiper blade end cap 20a, 20a 'is provided for guiding at least one nozzle element 26a, 26 a'. Nozzle element 26a, 26a 'has at least one guiding element 38a, 38 a', which, in the coupled condition, is arranged mostly within wiper end cap 20a, 20a ', in particular within inflow protrusion 64a, 64 a'. By means of the guiding elements 38a, 38a ', the nozzle elements 26a, 26a ' are configured by the scraper blade end caps 20a, 20a ' to be preferably linearly guided, preferably restricted linearly guided. The guide element 38a preferably has an at least substantially T-shaped cross-section perpendicular to the main extension of the nozzle elements 26a, 26 a'. The wiper blade end caps 20a, 20a 'have the inflow protrusion portions 64a, 64 a'. The blade end caps 20a, 20a 'preferably bound cavities 66a, 66 a' therein. The inflow projections 64a, 64a ' of the scraper blade end caps 20a, 20a ' delimit a portion of the cavities 66a, 66a ' of the scraper blade end caps 20a, 20a ', which is in particular provided for housing the guiding elements 38a, 38a '.

It is conceivable that the scraper device 10a has at least one bearing unit 68a, 68a ' for the purpose of movably bearing the nozzle elements 26a, 26a ' at least partially in the end regions 46a, 46a '. It is conceivable that the nozzle elements 26a, 26a 'are configured to be at least partially electrically adjustable and/or electrically heatable for the adjustable fluid discharge from the end regions 46a, 46 a' of the deflector elements 22 a. For these other features that can be considered, reference is made to the description of the embodiment with reference b.

Fig. 4 illustrates a method for assembling the scraper device 10 a. In at least one method step, in particular the moving step 70a, the scraper bar elements 24a are connected with the spring rails 18a, 18 a', preferably by means of push-in. In at least one method step, in particular one moving step 70a, at least one flow-guide plate element 22a, preferably two flow- spoilers 28a, 28a ', is connected by pushing with the scraper bar element 24a, preferably with the spring rails 18a, 18 a'. In principle, it is conceivable that the channel element 30a is connected to the baffle element 22a in at least one method step, in particular in the connecting step 72 a. In principle, it is conceivable that in at least one method step, in particular in one connecting step 72a, the channel unit 30a is connected to the deflector element 22a on the outer side 80a of the deflector element 22a via clip elements and/or adhesive connections. In at least one method step, in particular in one ligation step 72a, said at least one nozzle element 26a, 26 a' is at least partially inserted into channel unit 30 a. In at least one method step, in particular in one joining step 72a, said at least one nozzle element 26a, 26a ' is preferably joined to channel element 30a by means of a plug-in connection, preferably by means of a plug-in connection of the nozzle elements 26a, 26a ' and of at least one plug-in projection 36a, 36a ' of channel element 30 a. In at least one method step, in particular in a finishing step 74a, said at least one blade end cap 20a, 20a 'is inserted onto at least one, preferably two, spring rails 18a, 18 a'. In at least one method step, in particular in one finishing step 74a, at least one wiper blade end cap 20a, 20a 'is connected to the at least one, preferably two, spring rails 18a, 18 a' by means of a snap-lock connection. In at least one method step, in particular in one finishing step 74a, at least one wiper blade end cap 20a, 20a 'is connected to the spring rail with the receiving portion of the guide element 38a, 38 a' of the nozzle element.

Another embodiment of the present invention is shown in fig. 5. The following description and the figures are substantially limited to the differences between the exemplary embodiments, wherein reference can in principle also be made to the other exemplary embodiments, in particular to the figures and/or descriptions of fig. 1 to 4, with regard to identically denoted components, in particular with regard to components having the same reference numerals. To distinguish between these embodiments, the letter a is placed after the reference numerals of the embodiments in fig. 1 to 4. In the embodiment of fig. 5, the letter a is replaced by the letter b.

Fig. 5 shows an alternative embodiment of the scraper device 10 b. The channel unit 30b has a coupling element 82 b. The coupling element 82b is provided for fluidly connecting the channel unit 30b with a fluid container. The channel unit 30b has two hose elements 84b, 84 b'. Channel elements 30b, in particular hose elements 84b, 84b ', are arranged on the outer side 80b of the deflector element 22b, in particular on the side facing away from the inflow face 86b, for fluid guidance along the deflector element 22b from the intermediate region 62b of the deflector element 22b to the end regions 46b, 46 b' of the deflector element 22 b. Channel elements 30b, in particular hose elements 84b, 84 b', are connected with deflector plate elements 22b on the outer side 80b of deflector plate elements 22a by means of clip elements and/or adhesive connections. Hose elements 84b, 84 b' are connected to coupling element 82b in intermediate region 62 b. The hose elements 84b, 84b 'have support units 68b, 68 b', respectively, on the ends opposite to the coupling element 82 b. It is basically conceivable and technically possible to implement without problems that the hose elements 84b, 84b 'are each constructed without a bearing unit 68b, 68 b' on the end opposite the coupling element 82b, and that the nozzle elements 26b, 26b 'are inserted onto the ends of the hose elements 84b, 84 b'. Each one of the hose elements 84b, 84b 'at least partially, preferably mostly, constitutes a channel section 32b, 32 b'.

At least one support unit 68b, 68b ' is provided for at least part of the movable, preferably rotatable, support of nozzle elements 26b, 26b ', preferably in end regions 46b, 46b '. The support units 68b, 68b ' are provided for receiving the insertion projection portions 36b, 36b ' of the nozzle elements 26b, 26b '. The insertion projection portions 36b, 36b 'are rotatably supported by the support units 68b, 68 b'. The insertion projection portions 36b, 36b 'are connected to the channel unit 30b by the support units 68b, 68 b'. Structural elements 76b, 76b ' are arranged on nozzle elements 26b, 26b ', preferably on plug-in projections 36b, 36b '. The structural elements 76b, 76b 'are for example, but not exclusively, configured as tooth structures, preferably around the entire circumference of the plug-in protrusions 36b, 36 b'. The structural elements 76b, 76b 'are arranged for effecting rotation of the nozzle elements 26b, 26 b'.

Nozzle elements 26b, 26b 'are configured to be at least partially electrically adjustable and/or electrically heatable for adjustable fluid discharge from end regions 46b, 46 b' of deflector elements 22 b.

The scraper device 10b has at least one, preferably two, actuator elements 78b, 78 b', preferably electric motors. On the actuator elements 78b, 78b 'there are arranged transmission mechanism units 92b, 92 b'. At least one actuator element 78b, 78b 'is provided for moving the nozzle element 26b, 26 b'. The actuator elements 78b, 78b ' are provided for moving the nozzle openings 34b, 42b, 34b ', 42b ' of the nozzle elements 26b, 26b ', preferably for altering the orientation of the nozzle openings 34b, 42b, 34b ', 42b ' of the nozzle elements 26b, 26b '. Preferably, at least one actuator element 78b, 78b ' applies a force, preferably a rotational force, to at least one nozzle element 26b, 26b ' via a structural element 76b, 76b '.

In principle, it is conceivable that the nozzle openings 34b, 42b, 34b ', 42b ' are additionally preferably mounted on the nozzle elements 26b, 26b ' movably, in particular but without limitation, via opening-bearing elements. Preferably, said at least one actuator element 78b, 78b ' applies a force, preferably a pivoting force, to said at least one nozzle opening 34b, 42b, 34b ', 42b '.

The scraper means 10b has at least one, preferably three, heating elements 88b, 88b ', preferably electric heating elements 88b, 88 b'. Heating elements 88b, 88b 'are preferably arranged on coupling element 82b and on nozzle elements 26b, 26 b'. It is conceivable that at least one heating element 88b, 88b 'is arranged on the support unit 68b, 68 b'. It is contemplated that at least one heating element 88b, 88 b' is configured as part of channel unit 30b, e.g. for cyclic heating of the scraping liquid.

It is conceivable that the nozzle elements 26b, 26b 'are arranged at least partially in the end portions of the spoilers 28b, 28 b'. It is contemplated that the spoiler 28b, 28 b' is movable along the primary extension axis 54b of the deflector element 22 b. It is conceivable that the nozzle elements 26b, 26b 'are guided in the scraper end caps 20b, 20 b' in a sliding manner for the movability along the main extension axis 54b of the deflector element 22 b.

Claims (10)

1. A scraper device having a deflector plate element (22 a, 22 b), at least one nozzle element (26 a, 26a ', 26 b') and at least one channel element (30 a, 30 b) for being in fluid connection with said at least one nozzle element (26 a, 26a ', 26 b'), characterized in that said at least one nozzle element (26 a, 26a ', 26 b') is arranged on an end region (46 a, 46a ', 46 b') of said deflector plate element (22 a, 22 b), viewed along a main extension axis (54 a, 54 b) of said deflector plate element (22 a, 22 b).

2. The scraper device of claim 1, characterized by at least one scraper bar unit (24 a, 24 b) and at least one scraper blade end cap (20 a, 20a ', 20 b'), which is arranged in an end region (58 a, 58 b) of said scraper bar unit (24 a, 24 b) and which is provided for guiding said at least one nozzle element (26 a, 26a ', 26 b'), viewed along a main extension axis (56 a, 56 b) of said scraper bar unit (24 a, 24 b).

3. The scraper device according to claim 1 or 2, characterized by at least one scraper end cap (20 a, 20a ', 20 b'), which at least partially covers the deflector element (22 a, 22 b) in said end region (46 a, 46a ', 46 b') and which at least partially covers said nozzle element (26 a, 26a ', 26 b').

4. The scraper device of any one of the preceding claims, characterized in that said nozzle elements (26 a, 26a ', 26 b') have a stop (44 a, 44 b) that limits the rotation of said nozzle elements (26 a, 26a ', 26 b') in said end regions (46 a, 46a ', 46 b') with respect to said deflector plate units (22 a, 22 b).

5. The scraper device of any one of the preceding claims, characterized in that said channel elements (30 a, 30 b) are arranged on the outer sides (80 a, 80 b) of said deflector elements (22 a, 22 b) for fluid guidance along said deflector elements (22 a, 22 b) from the intermediate regions (62 a, 62 b) of said deflector elements (22 a, 22 b) to the end regions (46 a, 46a ', 46 b') of said deflector elements (22 a, 22 b).

6. The scraper device according to any one of the preceding claims, characterized by at least one supporting unit (68 a, 68a ', 68 b')) for making said nozzle elements (26 a, 26a ', 26 b') at least partially kinematically supported in said end regions (46 a, 46a ', 46 b').

7. The scraper device of any one of the preceding claims, characterized in that said nozzle elements (26 a, 26a ', 26 b') are configured to be at least partially electrically adjustable and/or electrically heatable, so as to be evacuated from a fluid that is capable of being conditioned by end regions (46 a, 46a ', 46 b') of said deflector elements (22 a, 22 b).

8. The scraper device according to any one of the preceding claims, characterized in that said nozzle element (26 a, 26a ', 26 b') has at least two nozzle openings (34 a, 34a ', 42 a', 34b ', 42 b') for discharging at least two distinct volumetric flows from said end region (46 a, 46a ', 46 b') in the direction of the intermediate region (62 a, 62 b) of the main extension range of said deflector plate unit (22 a, 22 b).

9. A scraper system having a scraper arm (12 a, 12 b) and a scraper device (10 a, 10 b) according to any one of claims 1 to 8.

10. A method for assembling a scraper device (10 a, 10 b) according to any of claims 1-8.

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