Wiper arm adapter, wiper arm with wiper arm adapter, and windshield wiper with wiper arm adapter.

Abstract

The present invention relates to a wiper arm adapter device having at least one fluid channel (44a, 46a; 44b, 46b) for guiding fluid and at least one connecting unit (48a; 48b) for connecting, particularly in fluid technology, the fluid channel (44a, 46a; 44b, 46b) to a fluid guiding element (36a; 36b) of the wiper arm and / or a wiper blade adapter (30a; 30b), particularly a fluid interface element (50a; 50b) of the wiper blade adapter (30a; 30b), the connecting unit (48a; 48b) having at least one connecting element (52a, 54a; 52b, 54b), which at least partially defines the fluid channel (44a, 46a; 44b, 46b). The proposed connection unit (48a; 48b) has at least one valve element (56a, 58a; 56b, 58b) arranged on the connection element (52a, 54a; 52b, 54b) and configured for fluid-technical connection of a closable fluid passage (44a, 46a; 44b, 46b) to a wiper adapter (30a; 30b), and in particular a fluid interface element (50a; 50b).

Description

Technical Field

[0001] This invention relates to a wiper arm adapter. Background Technology

[0002] A wiper arm adapter device has been proposed, having at least one fluid channel for guiding fluid and at least one connecting unit for connecting the fluid channel to a fluid guiding element of the wiper arm and / or a wiper blade adapter, particularly a fluid interface element of the wiper blade adapter, wherein the connecting unit has at least one connecting element that at least partially limits the fluid channel. Summary of the Invention

[0003] The present invention relates to a wiper arm adapter having at least one fluid channel for guiding fluid and at least one connecting unit for connecting, particularly in fluid technology, the fluid channel to a fluid guiding element of the wiper arm and / or a wiper blade adapter, particularly a fluid interface element of the wiper blade adapter, wherein the connecting unit has at least one connecting element that at least partially limits the fluid channel.

[0004] The proposed connection unit has at least one valve element arranged on the connection element and configured for a fluid-technical connection between a fluid passage and a wiper adapter, particularly a fluid interface element, in a closable configuration. "Configured" should be understood in particular as specially designed and / or specially equipped. The object, particularly the valve element, is configured for a specific function, and should be understood in particular as the object fulfilling and / or performing a specific function in at least one application and / or operating state. The valve element is particularly arranged on or within the fluid passage. The valve element is preferably fixed to the connection element or integrally constructed with the connection element. "Integrated" should be understood in particular as being joined by material fusion, for example, by welding and / or bonding processes, and particularly advantageously formed, for example, by casting and / or by single-component or multi-component injection molding. The valve element preferably has at least one closed state and at least one open state. The valve element, particularly in the open state, is at least substantially outside the fluid passage. In the closed state, at least one cross-section of the fluid passage, particularly in at least one cross-section of the connection element, is at least substantially completely closed by the valve element. In the closed state, the valve element preferably completely, and especially waterproofally, closes the fluid passage. The valve element is preferably configured to open the fluid passage when the operating element of the windshield wiper is operated, especially for cleaning the glass, wherein fluid is guided through the fluid passage to the wiper blade, especially the wiper blade adapter, via a connecting element and / or a fluid interface element.

[0005] The valve element is preferably movably constructed and / or movably supported on a connecting element relative to the fluid passage in at least one region of the valve element. The valve element is preferably configured to at least temporarily open the fluid passage, particularly during wiping operations of a windshield wiper, for directing fluid to the wiper blade adapter, particularly the fluid interface element. The valve element is particularly self-closing, wherein, particularly in the open state, at least one closing force, particularly a spring force, magnetic force, etc., acts at least partially on the valve element to transfer it to the closed state. The valve element is preferably configured to be continuously applied with an opening force, particularly acting in opposition to the closing force, in the open state to maintain the open state. It is conceivable that the valve element is configured to have the opening force applied by an actuating element of the fluid and / or connecting unit, particularly at least partially arranged on the valve element. The actuating element is particularly, for example, constructed as a piezoelectric element, a linear actuator, an electromagnet, etc. The valve element is, for example, configured as a spring-loaded ball in at least one region of the valve element, arranged on and / or within the fluid passage and configured to close the fluid passage in the closed state. Valve elements, at least partially constructed as spring-loaded balls, are particularly configured to move against a spring force when transitioning to an open state to open a fluid passage. The fluid passage is preferably constructed and / or the valve element is arranged such that the spring-loaded ball, in the closed state of the valve element, is positioned to guide fluid at least substantially smoothly through the fluid passage defined by connecting elements, particularly from a fluid guiding element to a wiper adapter, particularly a fluid interface element. The spring-loaded ball is, for example, arranged in the edge region of the fluid passage in the closed state, and / or on the inner surface of the fluid passage defined by the connecting elements. In another exemplary design of the valve element, the valve element is constructed in at least one region as a flexible element, such as a diaphragm, hose, and / or particularly a gas-filled rubber ball, wherein the valve element is configured to elastically deform when transitioning to an open state to open a fluid passage. Alternatively or additionally, it is conceivable that the valve element is at least partially movably and / or flip-up relative to the cross-section of the fluid passage.

[0006] It is conceivable that the connecting unit includes at least one coupling element, wherein the coupling element is configured to close the valve element and / or retain it in the closed state according to at least one unconnected state of the connecting unit, particularly the connecting element. The coupling element is particularly arranged on the connecting element. It is conceivable that the coupling element is movably supported on the connecting element, and / or the coupling element is at least partially magnetizable, wherein, in particular, the valve element is closed and / or retained in the closed state by magnetic force. Preferably, when the connecting element is separated from the fluid interface element, the coupling element, in particular, blocks the valve element by a connection that conforms to the shape of the valve element and / or transmits force. The coupling element is at least partially arranged on the valve element, particularly in the unconnected state of the connecting unit. The coupling element is configured, for example, as a spring-loaded pin, wherein the pin releases the valve element by a connection force applied against the spring force when connecting the connecting element to the fluid interface element. Especially when the coupling element is designed as a spring-loaded pin, the coupling element is configured to move to a closed position by spring force when the connecting element is separated from the fluid interface element, wherein, in particular, the valve element is closed and / or remains in the closed state. It is conceivable, particularly in the design of wiper arm adapters, especially in connection units with actuating elements, that the coupling element is configured to work in conjunction with the actuating element to close the valve element, particularly when the connecting element and fluid interface element are separated. Preferably, the actuating element is configured to separate the opening force from the valve element when working in conjunction with the coupling element, particularly for closing the valve element. The coupling element is particularly configured to separate the actuating element from the valve element when working in conjunction with the actuating element.

[0007] It is conceivable that the connecting unit includes at least one fixing element, which is configured to secure the connecting element to the wiper adapter, particularly the fluid interface element, in at least one connected state of the connecting unit. The fixing element may be configured as, for example, a locking element, part of a screw connection, part of a bayonet lock, etc. The fixing element is particularly arranged on the connecting element, particularly fixed to the connecting element, or integrally constructed with the connecting element. Preferably, the fixing element for securing the connecting element to the wiper adapter, particularly the fluid interface element, preferably works in conjunction with at least one mating fixing element of the wiper adapter. It is conceivable that a coupling element is arranged on the fixing element and / or works in conjunction with the fixing element to close the valve element and / or hold the valve element in the closed state. Additionally, it is conceivable that the wiper arm adapter device, particularly the connecting unit, has at least one operating element arranged on the connecting element. The operating element is preferably configured to separate the fixing element from the mating fixing element when operated by an operator, particularly to separate the connecting element from the wiper adapter, particularly the fluid interface element. Preferably, it is conceivable that the coupling element and / or valve element are functionally coupled to the operating element and / or fixing element when the valve element is separated from the connecting element and the wiper adapter, especially the fluid interface element. In particular, it is conceivable that the operating element and / or fixing element are configured such that the valve element is closed, and / or held in the closed state, especially by means of the coupling element, when the operating element is operated and / or the fixing element is released from the mating fixing element.

[0008] According to the design of the wiper arm adapter device, an advantageously rapid response time can be achieved for initiating the wiping process, especially because the path that the fluid must take from the valve element to the output opening, particularly on the wiper blade adapter and / or the wiper blade itself, can be advantageously kept very short. Advantageously low maintenance costs are achieved, especially because the valve element and connecting elements can preferably be constructed as individually replaceable and / or reusable components, independent of the wiper blade. Advantageously simple and rapid maintenance of the wiper arm adapter device, especially the valve element, is achieved, especially because the valve element can be arranged in an easily accessible manner.

[0009] Furthermore, it is proposed that the valve element be configured to waterproofly close the fluid passage, particularly in the vicinity of the fluid's state characteristics, especially in the region adjacent to the valve element and located in the fluid passage. At least one state characteristic parameter of the fluid is preferably configured as pressure, volumetric flow rate, temperature, the proportion of impurities in the fluid, etc. In particular, the vicinity of the fluid passage adjacent to the valve element extends within the fluid passage, within a maximum distance of at least 3 cm, preferably at most 2 cm, and especially preferably at most 1 cm, around the valve element. Preferably, the valve element is configured to be mechanically triggered when at least one limit value of the state characteristic parameter of the fluid located in the vicinity is exceeded, wherein, in particular, the fluid passage is waterproofly closed upon triggering the valve element. For example, in a design where the state characteristic parameter of the fluid is pressure, it is conceivable that the valve element is transferred to a closed state directly via the fluid, particularly via the force applied to the valve element by the fluid pressure. Particularly preferably, the valve element is configured to open or release the fluid passage according to the state characteristic parameter of the fluid, particularly after the state characteristic parameter of the fluid drops below a limit value. Alternatively or additionally, it is conceivable that the wiper arm adapter includes at least one sensor unit for detecting state characteristic parameters of the fluid within the fluid channel. The sensor unit particularly includes at least one sensor element disposed on the connecting element and / or valve element. The sensor element is preferably disposed at least in a nearby region of the fluid channel adjacent to the valve element. Particularly preferably, the sensor element is configured to detect state characteristic parameters of the fluid disposed in the nearby region. For example, the sensor element is constructed, depending on the type of the state characteristic parameter to be detected in the fluid, particularly as an optical or mechanical flow meter, pressure gauge, thermometer, preferably an optical sensor for detecting impurities in the fluid, etc. Preferably, the valve element is connected to the sensor unit, particularly the sensor element, particularly via a control and / or adjustment unit of the wiper arm adapter and / or windshield wiper. Preferably, the valve element is configured to, particularly waterproofly, close the fluid channel when the limit value of the state characteristic parameter of the fluid detected by means of the sensor unit, particularly the sensor element, is exceeded. Advantageously simple control of the valve element is possible, especially because the valve element can be controlled by adjusting the state characteristic parameters of the fluid. It can advantageously prevent accidental damage to the wiper blades, especially the wiper blade adapter, depending on factors such as temperature, pressure, and / or contamination.

[0010] Furthermore, it is proposed that the valve element is arranged in the end region of the wiper adapter side or the end region of the fluid guide element side of the fluid passage. Preferably, the end region of the wiper adapter side and / or the end region of the fluid guide element side extends within the region of the fluid passage defined by the connecting element. Preferably, the end region of the wiper adapter side and / or the end region of the fluid guide element side extends along the fluid passage, particularly at a maximum of 3 cm, preferably at a maximum of 2 cm, and particularly preferably at a maximum of 1 cm. The end region of the wiper adapter side is particularly arranged on the side of the region of the fluid passage defined by the connecting element, which is arranged in the plane of the outer surface of the wiper adapter side having the connecting element, wherein the outer surface of the wiper adapter side is at least partially arranged and / or abuts against the wiper adapter in the connected state of the connecting unit. Preferably, the end region of the fluid guiding element side is arranged on a particularly other side of the region of the fluid passage defined by the connecting element, which is arranged in the plane of the outer surface of the fluid guiding element side having the connecting element, wherein the outer surface of the fluid guiding element side is at least partially arranged and / or abuts against the fluid guiding element, particularly in the connected state of the connecting unit. Advantageously quick and simple maintenance, installation, and / or disassembly of the valve element and / or connecting element are possible, especially because the valve element can be arranged in an externally accessible area of ​​the connecting element. Advantageously low manufacturing and / or maintenance costs are possible, especially because the connecting element can be constructed at least largely integrally with the valve element, independent of the valve element, and / or the valve element can be installed on the connecting element after the connecting element has been manufactured.

[0011] Furthermore, it is proposed that the connecting element is at least partially constructed as a sleeve in at least one connection region of the connecting element, wherein the valve element is at least partially arranged in the connection region. Particularly preferably, the connecting element has at least two connection regions, wherein the connecting element is at least partially constructed as a sleeve in both connection regions. Preferably, each sleeve at least partially defines a fluid passage. One sleeve of the two sleeves particularly at least partially defines the end region of the fluid passage on the fluid guiding element side. The other sleeve of the two sleeves preferably at least partially defines the end region of the fluid passage on the wiper adapter side. The sleeve is preferably configured for connecting the connecting element to the fluid guiding element, particularly in a fluid-technical manner, and particularly fixed to the fluid guiding element. The other sleeve is preferably configured for connecting the connecting element to a fluid interface element, particularly in a fluid-technical manner, and particularly fixed to the fluid interface element. It is conceivable that the sleeves and the other sleeve are constructed differently from each other, wherein, in particular, the sleeve is constructed corresponding to the fluid guiding element, and the other sleeve is constructed corresponding to the fluid interface element. The fluid channel preferably has a tapered, circular, elliptical, or polygonal cross-section in the region bounded by connecting elements, particularly sleeves, and / or additional sleeves. The region bounded by the connecting elements extends along a route having a maximum length ranging from particularly 2 cm to 10 cm, preferably 3 cm to 8 cm, and particularly preferably 4 cm to 6 cm. The region bounded by the sleeves and / or additional sleeves preferably extends along a route having a maximum length corresponding to at least 30%, preferably at least 50%, and particularly preferably at least 60% of the maximum length of the route in the region bound by the connecting elements. The sleeve has at least one intermediate axis oriented at least substantially parallel to the main extension axis of the fluid guiding element in the connected state of the connecting unit. The "main extension axis" of the component, particularly the fluid guiding element, should be understood as an axis extending parallel to the longest side of a minimum geometric hexahedron that also completely encloses the object. "Substantially parallel" should be understood in particular as the orientation of a straight line or plane relative to another straight line or plane, especially in the projection plane, wherein the straight line or plane has a deviation of particularly less than 8º, advantageously less than 5º, and particularly advantageously less than 2º relative to the other straight line or plane. Preferably, the additional sleeve has at least one intermediate axis oriented at least substantially perpendicular to the main extension axis of the wiper adapter when the connecting unit is in the connected state. "Substantially perpendicular" should be understood in particular as the orientation of a straight line or plane relative to another straight line or plane, wherein the straight line or plane and the other straight line or plane, especially when viewed in the projection plane, enclose an angle of 90º, and this angle has a maximum deviation of particularly less than 8º, advantageously less than 5º, and particularly advantageously less than 2º.Preferably, the central axis of the sleeve is oriented transversely to, and in particular at least substantially perpendicular to, the central axis of another sleeve. The sleeve is particularly configured to connect, at least partially, to a fluid guiding element by movement along its central axis. The other sleeve is preferably configured to connect, at least partially, to a fluid interface element by movement along its central axis. Advantageously quick and simple maintenance, installation, and / or disassembly of the valve element and / or connecting element are possible, especially because the valve element can be arranged in an externally accessible sleeve. Advantageously low manufacturing costs are possible, especially because the valve element can be installed on the connecting element after the connecting element has been manufactured.

[0012] Furthermore, it is proposed that the connecting element is constructed and / or the valve element is arranged such that the fluid passage is constructed at least substantially straight within a minimum distance of at least 0.5 cm, preferably at least 1 cm, and particularly preferably at least 1.5 cm from the valve element in the guiding direction toward the connecting element and / or opposite to it. "Substantially straight" should be understood in particular as at least one profile or outer surface, especially the connecting element, component, or the surface of the fluid passage bounded by the connecting element, having a maximum deviation of less than 8º, preferably less than 5º, and particularly preferably less than 2º relative to at least one straight line or plane intersecting the profile or outer surface at least at one point. The region of the fluid passage bounded by the connecting element is constructed, in particular, along a curved or L-shaped guiding path, wherein, in particular, the guiding path is at least partially, especially in the region of the fluid passage where the valve element is arranged, constructed at least substantially straight. The guiding direction is preferably oriented along the guiding path, especially from the end region on the fluid guiding element side toward the end region on the wiper adapter side. However, it is also conceivable that the guiding path is constructed, in particular, at least substantially completely and at least substantially straight. This enables the fluid to flow advantageously in layers through the valve element. It advantageously prevents accidental damage to the fluid passage and / or fluid interface elements due to fluid vortexing in the vicinity of the valve element. It advantageously prevents unexpected delays caused by fluid vortexing in the vicinity of the valve element as the fluid flows through the fluid passage. It enables advantageously high response times for initiating the wiper process.

[0013] Furthermore, it is proposed that the valve element be constructed as a Dunlop valve, a Sclaverand valve, a Schrader valve, a diaphragm valve, or a check valve. However, it is also conceivable that the valve element may have other design options that are meaningful to those skilled in the art. An advantageously simple design of the valve element can be achieved. The valve element can be advantageously controlled by the pressure of the fluid on it.

[0014] Furthermore, it is proposed that the connecting unit has at least one additional connecting element and at least one additional valve element, wherein the additional valve element is arranged on the additional connecting element. The additional valve element is particularly constructed at least substantially the same as the valve element. The additional connecting element is preferably constructed at least substantially the same as the connecting element. The wiper arm adapter preferably includes at least one additional fluid channel, wherein, in particular, the additional connecting element at least partially defines the additional fluid channel. The additional connecting element is particularly configured to connect the additional fluid channel to the fluid guiding element and / or additional fluid guiding element of the wiper arm, and / or to the fluid interface element and / or additional fluid interface element of the wiper blade adapter, particularly the wiper blade adapter. The fluid channel and the additional fluid channel are preferably constructed to be fluidically separate from each other. Preferably, the additional connecting element is arranged on the connecting element, particularly in the connected state of the connecting unit. Preferably, the additional connecting element is fixed to the connecting element or integrally constructed with the connecting element. It is advantageous to provide a wiper arm adapter for wiper blades, particularly wiper blade adapters, having two separate fluid guiding elements. Advantageously, it is possible to control two separate and extending fluid flows independently using valve elements.

[0015] Furthermore, it is proposed that the valve element can be constructed electrically, electronically, mechanically, pneumatically, and / or hydraulically. The valve element is particularly configured to switch to a closed or open state during operation. It is conceivable that the wiper arm adapter includes at least one communication and / or guiding unit configured to connect the valve element to the control and / or adjustment unit of the wiper arm adapter and / or windshield wiper. The communication and / or guiding unit preferably includes at least one communication and / or guiding element disposed on the valve element. The communication and / or guiding element extends, for example, from the valve element, particularly along the wiper arm and / or fluid guiding element, to the control and / or adjustment unit. The communication and / or guiding element is preferably configured to transmit at least one visual, tactile, and / or acoustic signal from the control and / or adjustment unit to the valve element, particularly for controlling and / or adjusting the valve element. Particularly in designs for electrically and / or electronically controllable valve elements in wiper arm adapters, it is conceivable that communication and / or guiding elements are configured to transmit control signals, particularly for controlling and / or regulating the valve element, to the valve element via a wireless connection, such as a radio connection, and / or an inductive connection. The valve element is particularly configured to switch to a closed or open state according to the transmitted control command. Particularly in designs for wiper arm adapters, especially those with a connecting unit having an actuating element, the control and / or regulating unit is preferably configured to open the valve element by manipulating the actuating element, preferably via the communication and / or guiding unit, particularly the communication and / or guiding element. Preferably, the actuating element is configured to apply an opening force to the valve element to open the fluid passage when manipulated by the control and / or regulating unit. Particularly in designs for wiper arm adapters with a sensor unit, it is conceivable that the communication and / or guiding unit is configured to transmit state characteristic parameters detected by the sensor unit from the sensor unit to the control and / or regulating unit. The communication and / or guiding element is particularly connected to the sensor element of the sensor unit. Especially in the design of wiper arm adapters with coupling elements, it is conceivable that the coupling element is preferably configured to control the valve element, particularly based on the unconnected state of the connecting unit. This enables advantageous individualized control of the valve element. It allows for the operation of the valve element advantageously independent of the fluid's state characteristics, particularly for cleaning fluid passages, maintaining wiper arm equipment, and automatically diagnosing valve elements under lower pressures.

[0016] Furthermore, a wiper arm is proposed, having at least one wiper arm adapter device according to the invention, particularly as described above. The wiper arm particularly includes at least one wiper bar, along which a fluid guiding element extends. The fluid guiding element is preferably at least partially, particularly at least largely, surrounded by the cover element of the wiper bar and / or wiper arm when viewed along the main extension axis of the wiper arm, particularly in a plane extending at least substantially perpendicular to the main extension axis of the wiper arm. The wiper arm preferably includes a wiper arm adapter for securing the wiper blade, particularly the wiper blade adapter, to the wiper arm. The wiper arm adapter includes at least one support element, particularly configured as a support bolt, for pivotally supporting the wiper blade, particularly the wiper blade adapter, on the wiper arm, particularly the wiper arm adapter. The wiper arm adapter includes at least one fixing element configured to secure the wiper blade, particularly the wiper blade adapter, relative to the wiper arm, particularly the wiper arm adapter, in at least one position. Preferably, at least the connecting unit, particularly the connecting element, is arranged along the main extension axis of the wiper arm when viewed from the fixing element and / or the support element toward the direction facing the wiper bar and / or the fluid guiding element.

[0017] The wiper arm, according to the invention, allows for an advantageously rapid response time for initiating the wiping process, particularly because the path that fluid must traverse from the valve element to the output opening, especially on the wiper blade adapter and / or the wiper bar, can be advantageously kept very short. Advantageously low maintenance costs are achieved, especially because the valve element and connecting elements can preferably be constructed as individually replaceable and / or reusable components, independent of the remaining wiper arm adapter and / or wiper bar. Advantageously simple and quick maintenance of the wiper arm, especially the valve element, is achieved, particularly because the valve element can be arranged in an easily accessible manner.

[0018] Furthermore, a windshield wiper is proposed, having at least one wiper blade, particularly as described above, and at least one wiper arm, also particularly as described above, according to the invention. The windshield wiper preferably includes at least one fluid container, which is connected, in particular, to a wiper blade adapter, in particular, via a fluid guiding element and / or connecting unit, particularly the connecting element. The windshield wiper preferably includes at least one pump unit configured to transport fluid from the fluid container through the fluid guiding element and / or connecting unit, in particular the connecting element, to the wiper blade adapter, in particular the fluid interface element. The windshield wiper particularly includes an operating element configured to activate at least one pump unit and / or valve element, particularly when operated by a user. The windshield wiper preferably includes a control and / or regulating unit configured to control and / or regulate at least one pump unit and / or valve element.

[0019] The windshield wipers according to the invention achieve an advantageously rapid response time for initiating the wiping process, particularly because the path that fluid must traverse from the valve element to the output opening, especially on the wiper blade adapter and / or the wiper blade itself, can be advantageously kept very short. Advantageously low maintenance costs are achieved, especially because the valve element and connecting elements can preferably be constructed as individually replaceable and / or reusable components, independent of the wiper blade. Advantageously simple and quick maintenance of the windshield wipers, especially the valve element, is achieved, particularly because the valve element can be arranged in an easily accessible manner.

[0020] The wiper arm adapter device according to the present invention, the wiper arm according to the present invention, and / or the windshield wiper according to the present invention should not be limited to the applications and embodiments described above. The wiper arm adapter device according to the present invention, the wiper arm according to the present invention, and / or the windshield wiper according to the present invention can, in particular, have quantities different from those mentioned for the various elements, components, and units, in order to satisfy the functional principles described herein. Furthermore, regarding the value ranges described in this disclosure, values ​​within the mentioned limits should also be considered disclosed and can be used arbitrarily. Attached Figure Description

[0021] Further advantages are described in the following figures, which illustrate two embodiments of the invention. The figures, description, and claims contain numerous combinations of features. Those skilled in the art will also readily consider these features individually and generalize them into other meaningful combinations.

[0022] in:

[0023] Figure 1 A schematic diagram of a glass wiper according to the present invention is shown, wherein the wiper arm has a wiper arm adapter according to the present invention;

[0024] Figure 2 A schematic detail view of the windshield wiper according to the invention is shown in the area of ​​the wiper arm adapter according to the invention;

[0025] Figure 3 A schematic diagram of the connection unit of the wiper arm adapter according to the present invention is shown in the side view; and

[0026] Figure 4 A side view shows a schematic diagram of the connection unit of an alternative design of the wiper arm adapter according to the present invention. Detailed Implementation

[0027] Figure 1The figure shows a windshield wiper 10a mounted on glass 12a. Specifically, glass 12a is constructed as a windshield of a vehicle (not shown in the figures). However, it is also conceivable that the windshield wiper 10a could be arranged on the glass 12a of a stationary object, such as a building, or other moving device. The windshield wiper 10a includes a wiper arm 14a, a wiper blade 16a, a drive unit 18a, a fluid container 20a, and a pump unit 22a. Preferably, the drive unit 18a has a drive shaft 24a driven by a drive element, particularly a drive element... Figure 1 Not shown, in particular, the wiper arm 14a is fixed to the drive shaft 24a and can move along the glass 12a via the drive shaft 24a. The wiper arm 14a includes a wiper arm adapter 26a and a wiper arm fitting device 28a. The wiper blade 16a includes a wiper blade adapter 30a, wherein the wiper blade 16a can be fixed to the wiper arm 14a, and in particular to the wiper arm adapter 26a, via the wiper blade adapter 30a. The wiper blade 16a is rotatably supported relative to the wiper arm 14a, particularly for the installation or removal of the wiper blade 16a, in at least one operating state of the windshield wiper 10a, especially via the wiper blade adapter 30a and the wiper arm adapter 26a. The windshield wiper 10a includes an operating element 32a, particularly configured as a wiper lever, for user control and / or adjustment of at least one function of the windshield wiper 10a. The windshield wiper 10a includes a control and / or adjustment unit 34a, which is configured to control and / or adjust the pump unit 22a.

[0028] The wiper arm 14a has two fluid guiding elements 36a, a wiper bar 38a, a support element 40a configured as a support bolt, and a fixing element 42a configured as a retaining finger. The fixing element 42a is specifically configured to secure the wiper blade 16a, and in particular the wiper blade adapter 30a, relative to the wiper arm 14a, and in particular the wiper arm adapter 26a, in at least one position. Preferably, the fixing element 42a is configured to at least partially surround the wiper blade adapter 30a in at least one installed state. In particular, the wiper blade adapter 30a is movably, and in particular pivotally, supported on the wiper arm adapter 26a by the support element 40a. The wiper arm adapter device 28a includes two fluid channels 44a and 46a for guiding fluid, and a connecting unit 48a. The connecting unit is used, particularly in a fluid technology, to connect one of the respective fluid channels 44a and 46a to one of the respective fluid guiding elements 36a of the wiper arm 14a and / or to one of the two fluid interface elements 50a of the wiper blade adapter 30a, particularly the wiper blade adapter 30a. The fluid guiding element 36a is specifically configured for fluid technology connection between the fluid container 20a and the connecting unit 48a. The fluid guiding element 36a extends at least partially along the wiper arm 14a, particularly from the drive shaft 24a to the wiper arm adapter 26a. The pump unit 22a is specifically configured for transporting fluid from the fluid container 20a through the fluid guiding element 36a and / or the connecting unit 48a to the wiper blade adapter 30a, particularly the fluid interface element 50a.

[0029] Figure 2The diagram shows a detailed view of the wiper arm adapter 28a in the connected state of the connecting unit 48a. The connecting unit 48a includes an integrally constructed connecting element 52a and another connecting element 54a. However, it is also conceivable that the connecting element 52a and the other connecting element 54a are constructed separately from each other and / or fixed to each other. The connecting element 52a and the other connecting element 54a respectively at least partially define one of the two fluid channels 44a, 46a. The connecting unit 48a includes a valve element 56a and another valve element 58a, wherein the valve element 56a is arranged on the connecting element 52a, and the other valve element 58a is arranged on the other connecting element 54a. The valve element 56a and the other valve element 58a are configured for fluid-technical connection of the fluid channels 44a, 46a, which can be closedly constructed, with the wiper adapter 30a, and in particular the fluid interface element 50a. The connecting element 52a defines the fluid channel 44a of the two fluid channels 44a, 46a. The additional connecting element 54a defines another fluid channel 46a of the two fluid channels 44a, 46a. The two fluid channels 44a, 46a are fluidically separated from each other by connecting element 52a and another connecting element 54a. The fluid guiding element 36a extends at least partially along the wiper arm 38a. The fluid guiding element 36a is at least largely surrounded by the wiper arm 38a when viewed along the main extension axis 60a of the wiper arm 14a, especially in a plane extending at least substantially perpendicular to the main extension axis 60a of the wiper arm 14a. When viewed from the fixing element 42a and / or the support element 40a toward the wiper arm 38a and / or the fluid guiding element 36a, the connecting unit 48a, especially the connecting element 52a and / or the other connecting element 54a, is arranged particularly along the main extension axis 60a of the wiper arm 14a.

[0030] Valve element 56a and the additional valve element 58a are configured as Dunlop valves. However, other designs for valve elements 56a and 58a are also conceivable, such as French valves, Scherescher valves, diaphragm valves, or check valves. Valve element 56a and the additional valve element 58a are mechanically and / or hydraulically, especially fluidically operable. However, it is also conceivable that valve element 56a and the additional valve element 58a are electrically, electronically, and / or pneumatically operable, for example, operable via the control and / or regulating unit 34a of the windshield wiper 10a. In particular, valve element 56a and / or the additional valve element 58a are configured to switch to a closed or open state during operation. Preferably, valve element 56a is movably configured and / or supported on connecting element 52a in at least one region of valve element 56a relative to fluid passage 44a. In particular, the additional valve element 58a is movably configured relative to the additional fluid passage 46a in at least one region of the additional valve element 58a, and / or particularly supported on the additional connecting element 54a. It is conceivable that valve element 56a and the additional valve element 58a are self-closing, wherein, particularly in the open state, at least one closing force, particularly a spring force, acts at least partially on valve element 56a and the additional valve element 58a to transfer them to the closed state. For example, valve elements 56a and 58a are configured in at least one region as spring-loaded balls or flexible elements, such as, in particular, diaphragms, hoses, and / or, in particular, gas-filled rubber balls. It is conceivable that valve element 56a and / or the additional valve element 58a are configured to have an opening force applied by an actuating element 61a of the fluid and / or connecting unit 48a, particularly at least partially arranged on valve element 56a.

[0031] Valve element 56a is arranged on or in a fluid passage 44a defined by connecting element 52a. A further valve element 58a is arranged on or in a further fluid passage 46a defined by a further connecting element 54a. In particular, valve element 56a is integrally constructed with connecting element 52a. Preferably, the further valve element 58a is integrally constructed with the further connecting element 54a. Valve element 56a and the further valve element 58a preferably have at least one closed state and at least one open state. Valve element 56a, especially in its open state, is at least mostly arranged outside the fluid passage 44a. Preferably, the further valve element 58a, in its open state, is at least mostly arranged outside the further fluid passage 46a. In the closed state of valve element 56a, at least one cross-section of the fluid passage 44a is at least substantially completely closed by valve element 56a in at least one cross-section of connecting element 52a. Preferably, in the closed state of the additional valve element 58a, at least one cross section of the additional fluid passage 46a is at least substantially completely closed by the additional valve element 58a in at least one cross section of the additional connecting element 54a. Preferably, in the closed state of valve element 56a and the additional valve element 58a, valve element 56a and the additional valve element 58a waterproofly close fluid passages 44a, 46a. Preferably, valve element 56a and / or the additional valve element 58a are configured to open fluid passages 44a and / or the additional fluid passage 46a when the operating element 32a of the windshield wiper 10a is operated, especially for cleaning the glass 12a, wherein fluid is guided through fluid passages 44a and / or the additional fluid passage 46a, via connecting element 52a, the additional connecting element 54a and / or fluid interface element 50a to wiper blade 16a, especially wiper blade adapter 30a.

[0032] The connecting unit 48a includes two fixing elements 62a, which are configured to fix the connecting element 52a and another connecting element 54a to the wiper adapter 30a, particularly the fluid interface element 50a, when the connecting unit 48a is connected. Specifically, in Figure 2Only one of the two fixing elements 62a is shown, while the other of the two fixing elements 62a is arranged on the opposite side of the connecting unit 48a on another connecting element 54a. The fixing element 62a is constructed as a locking element. Other designs of the fixing element 62a are also conceivable, such as as part of a screw connection, as part of a bayonet lock, etc. The fixing element 62a is integrally constructed with the connecting element 52a and the other connecting element 54a. The fixing element 62a used to fix the connecting element 52a and the other connecting element 54a to the wiper adapter 30a, especially the fluid interface element 50a, preferably works in conjunction with two mating fixing elements 64a of the wiper adapter 30a arranged on the fluid interface element 50a.

[0033] It is conceivable that the connecting unit 48a includes at least one coupling element 66a, wherein the coupling element 66a is configured to close valve element 56a and other valve element 58a, and / or retain them in a closed state, depending on at least one unconnected state of the connecting unit 48a, particularly the connecting element 52a and other connecting element 54a. The coupling element 66a is particularly arranged on the connecting element 52a and / or the other connecting element 54a. It is conceivable that the coupling element 66a is movably supported on the connecting element 52a and / or the other connecting element 54a, and / or the coupling element 66a is at least partially magnetizable, wherein, particularly depending on the unconnected state of the connecting unit 48a, the valve element 56a and other valve element 58a are closed by magnetic force, and / or retained in a closed state of valve element 56a. Preferably, when connecting element 52a and the other connecting element 54a are separated from fluid interface element 50a, coupling element 66a, in particular, blocks valve element 56a and the other valve element 58a by means of a shape-fitting and / or force-transmitting connection with valve element 56a and the other valve element 58a. Coupling element 66a is at least partially arranged on valve element 56a and the other valve element 58a, especially in the unconnected state of connecting unit 48a. Coupling element 66a is configured, for example, as a spring-loaded pin, wherein the pin releases valve element 56a and the other valve element 58a by a connection force applied against the spring force when connecting connecting element 52a and the other connecting element 54a to fluid interface element 50a. Especially when the coupling element 66a is designed as a spring-loaded pin, the coupling element 66a is configured to move to a closed position by spring force when the connecting element 52a and the other connecting element 54a are separated from the fluid interface element 50a, wherein, in particular, the valve element 56a and the other valve element 58a are closed and / or held in the closed state. It is conceivable that the coupling element 66a is arranged on at least one of the fixing element 62a, and / or to cooperate with the fixing element 62a to close the valve element 56a and the other valve element 58a and / or to hold the valve element 56a and the other valve element 58a in the closed state. Especially in the design of the wiper arm adapter 28a, particularly the connecting unit 48a with the actuating element 61a, it is conceivable that the coupling element 66a is configured to cooperate with the actuating element 61a to close the valve element 56a and / or the other valve element 58a, especially when the connecting element 52a, the other connecting element 54a and the fluid interface element 50a are separated. Preferably, the actuating element 61a is configured to, when acting in conjunction with the coupling element 66a, separate the opening force from the valve element 56a and / or other valve element 58a, particularly for closing the valve element 56a and / or other valve element 58a. The coupling element 66a is particularly configured to, when acting in conjunction with the actuating element 61a, separate the actuating element 61a from the valve element 56a and / or other valve element 58a.

[0034] Contemplate that the wiper arm adapter 28a includes a sensor unit 68a for detecting state characteristic parameters of the fluid within the fluid channels 44a, 46a. The sensor unit 68a specifically includes a sensor element 70a, which is arranged on the connecting element 52a, another connecting element 54a, valve element 56a, and / or another valve element 58a. The sensor element 70a is preferably arranged in at least one of the fluid channels 44a, 46a in a nearby region 72a adjacent to the valve element 56a or another valve element 58a. Particularly preferably, the sensor element 70a is configured to detect state characteristic parameters of the fluid arranged in the nearby region 72a. For example, the sensor element 70a is constructed, depending on the type of state characteristic parameter to be detected in the fluid, particularly as an optical or mechanical flow meter, pressure gauge, thermometer, preferably an optical sensor for detecting impurities in the fluid, etc. Preferably, the valve element 56a and the other valve element 58a are connected to the sensor unit 68a, particularly the sensor element 70a, particularly via a control and / or adjustment unit 34a. Preferably, valve element 56a and additional valve element 58a are configured to, in particular, waterproofly close fluid passages 44a and 46a when the limit value of the state characteristic parameter of the fluid detected by means of sensor unit 68a, especially sensor element 70a is exceeded.

[0035] Valve element 56a and another valve element 58a are configured to waterproofly close fluid passages 44a and 46a, particularly in a proximity region 72a adjacent to valve element 56a, based on fluid state characteristic parameters, especially those disposed in one of the fluid passages 44a and 46a. The fluid state characteristic parameters are configured as fluid pressure. However, it is also conceivable that, particularly according to the design of valve elements 56a and 58a, the state characteristic parameters could be configured as volumetric flow rate, temperature, the proportion of impurities in the fluid, etc. Valve element 56a and the other valve element 58a are configured to be mechanically triggered when at least one limit value of the fluid state characteristic parameter disposed in the proximity region 72a is exceeded, particularly waterproofly closing fluid passages 44a and 46a upon triggering valve element 56a and the other valve element 58a. Valve element 56a and the other valve element 58a are particularly configured to be transferred to a closed state directly via the fluid, particularly via a force applied to valve element 56a and the other valve element 58a by fluid pressure. Particularly preferably, valve element 56a and additional valve element 58a are configured to open or release fluid passages 44a and 46a based on the state characteristic parameters of the fluid, particularly arranged in the vicinity 72a adjacent to valve element 56a and / or additional valve element 58a, especially after the state characteristic parameters of the fluid drop below a limit value. In particular, valve element 56a is configured to waterproofly close fluid passage 44a based on the state characteristic parameters of the fluid, particularly arranged in the vicinity 72a adjacent to valve element 56a. Additional valve element 58a is preferably configured to waterproofly close additional fluid passage 46a based on the state characteristic parameters of the fluid, particularly arranged in the vicinity 72a adjacent to additional valve element 58a.

[0036] Alternatively, the wiper arm adapter 28a may include at least one communication and / or guidance unit 74a (see...) Figure 1 The valve element 56a and / or another valve element 58a is configured to connect the control and / or adjustment unit 34a of the wiper arm adapter 28a and / or the windshield wiper 10a. The communication and / or guiding unit 74a preferably includes at least one communication and / or guiding element 76a disposed on the valve element 56a and / or another valve element. The communication and / or guiding unit 74a and the communication and / or guiding element 76a are particularly important in… Figure 2As shown in the diagram. A communication and / or guiding unit 76a extends, for example, from valve element 56a and / or another valve element 58a, particularly along wiper arm 14a and / or one of the fluid guiding elements 36a, to control and / or regulating unit 34a. The communication and / or guiding element 76a is preferably configured to transmit at least one visual, tactile, and / or acoustic signal from control and / or regulating unit 34a to valve element 56a and / or another valve element 58a, particularly for controlling and / or regulating valve elements 56a, 58a. Particularly conceivable in designs of electrically and / or electronically operable valve elements 56a and / or another valve element 58a in wiper arm adapter device 28a, the communication and / or guiding element 76a is configured to transmit control signals, particularly for controlling and / or regulating valve elements 56a, 58a, from control and / or regulating unit 34a to valve element 56a and / or another valve element 58a via wireless connection, such as radio connection, and / or inductive connection. Valve element 56a and / or additional valve element 58a are particularly configured to switch to a closed or open state according to transmitted control commands. Especially in designs of wiper arm adapter 28a with sensor unit 68a, it is conceivable that communication and / or guiding unit 74a is configured to transmit state characteristic parameters detected by sensor unit 68a from sensor unit 68a to control and / or regulating unit 34a. Communication and / or guiding element 76a is particularly connected to sensor element 70a of sensor unit 68a. Especially in designs of wiper arm adapter 28a with coupling element 66a, it is conceivable that coupling element 66a is preferably configured to operate valve element 56a and / or additional valve element 58a, particularly according to the unconnected state of connection unit 48a.

[0037] Figure 3The side view shows a segment of a wiper arm adapter 28a, which specifically includes a connecting element 52a, a further connecting element 54a, a fixing element 62a, a valve element 56a, and a further valve element 58a. The adjacent region 72a of the fluid passages 44a and / or the further fluid passages 46a, adjacent to the valve elements 56a and / or the further valve elements 58a, extends within the fluid passages 44a and / or the further fluid passages 46a, at a maximum distance 78a of at least 3 cm, preferably at least 2 cm, and particularly preferably at least 1 cm, around the valve elements 56a and / or the further valve elements 58a. The valve elements 56a and the further valve elements 58a are arranged within the end regions 80a on the fluid guide element side of the fluid passages 44a and 46a. The end regions 80a on the fluid guide element side extend within the regions 98a of the fluid passages 44a and 46a defined by the connecting elements 52a and the further connecting elements 54a. The end region 80a of the fluid guiding element side extends along the fluid channels 44a, 46a on the route 82a, the route having a length of at most 3 cm, preferably at most 2 cm, and particularly preferably at most 1 cm. In particular, the end region 80a of the fluid guiding element side is arranged on the side 84a of the region 98a of the fluid channels 44a, 46a, which is defined by the connecting element 52a and / or another connecting element 54a. This side is arranged in the plane of the outer surface 86a of the fluid guiding element side having the connecting element 52a and / or another connecting element 54a, wherein the outer surface 86a of the fluid guiding element side is at least partially arranged and / or abuts against one of the fluid guiding elements 36a, especially in the connected state of the connecting unit 48a.

[0038] Connecting element 52a has two connecting regions 88a and 90a, wherein connecting element 52a is at least partially configured as sleeves 92a and 94a in each of the two connecting regions 88a and 90a, respectively. Connecting element 52a is at least partially configured as a sleeve 92a in each of the connecting regions 88a and 90a, wherein valve element 56a is at least partially disposed within the connecting region 88a of connecting element 52a. Another connecting element 54a has two connecting regions 88a and 90a, wherein another connecting element 54a is at least partially configured as a sleeve 92a and 94a in each of the two connecting regions 88a and 90a, respectively. Another connecting element 54a is at least partially configured as a sleeve 92a in each of the connecting regions 88a and 90a, wherein another valve element 58a is at least partially disposed within the connecting region 88a of the other connecting element 54a. Preferably, the sleeves 92a and 94a respectively at least partially define one of the fluid channels 44a and 46a. The sleeves 92a of the connecting element 52a and the other connecting element 54a particularly at least partially define the end regions 80a of the fluid channels 44a and 46a on the fluid guiding element side. The additional sleeves 94a of the connecting element 52a and the other connecting element 54a preferably at least partially define the end regions 96a of the fluid channels 44a and 46a on the wiper adapter side. Preferably, the sleeves 92a and 94a are provided for connecting and securing the connecting element 52a and the other connecting element 54a to the fluid guiding element 36a or the fluid interface element 50a, particularly in a fluid-technical manner. The additional sleeve 94a of the end region 96a on the limiting wiper adapter side of the connecting element 52a and the other connecting element 54a is constructed differently from the sleeve 92a of the end region 80a on the limiting fluid guiding element side of the connecting element 52a and the other connecting element 54a. In particular, the sleeve 92a is constructed corresponding to the fluid guiding element 36a, and the additional sleeve 94a is constructed corresponding to the fluid interface element 50a.

[0039] Fluid channels 44a and 46a preferably have a tapered, particularly circular, cross-section within a region 98a defined by connecting element 52a and another connecting element 54a. However, other designs for fluid channels 44a and 46a, such as having an elliptical or polygonal cross-section, are also conceivable. The region 98a defined by connecting element 52a and another connecting element 54a of fluid channels 44a and 46a extends particularly along route 100a, which has a maximum length ranging from particularly 2 cm to 10 cm, preferably 3 cm to 8 cm, particularly preferably 4 cm to 6 cm, and even more particularly preferably 6 cm. The region 120a of the fluid channels 44a, 46a, defined by the sleeves 92a, 94a of the connecting element 52a or other connecting element 54a, extends along a route having a maximum length of at least 30%, preferably at least 50%, particularly preferably at least 60%, and even more particularly preferably 60% of the maximum length of the route 100a corresponding to the region 98a of the fluid channels 44a, 46a, defined by the connecting element 52a and other connecting element 54a. The sleeves 92a of the connecting element 52a and other connecting element 54a each have a central axis 102a oriented at least substantially parallel to the main extension axis 106a of the fluid guiding element 36a when the connecting unit 48a is connected. The additional sleeves 94a of the connecting element 52a and other connecting element 54a preferably each have a central axis 104a oriented at least substantially perpendicular to the main extension axis 108a of the wiper adapter 30a when the connecting unit 48a is connected (see...). Figure 2 Orientation. The central axis 102a of the sleeve 92a is preferably oriented at least substantially perpendicular to the central axis 104a of the other sleeve 94a. The sleeve 92a of the connecting element 52a and the other connecting element 54a is particularly configured to be connected to the fluid guiding element 36a, at least partially, by movement along the central axis 102a of the sleeve 92a. The other sleeve 94a of the connecting element 52a and the other connecting element 54a is preferably configured to be connected to the fluid interface element 50a, at least partially, by movement along the connecting axis 110a of the connecting unit 48a, and especially the central axis 104a of the other sleeve 94a.

[0040] The connecting element 52a is configured and / or the valve element 56a is arranged such that the fluid passage 44a is at least substantially straight in the guiding direction 114a toward the connecting element 52a and in the opposite direction with respect to the valve element 56a at a minimum distance 112a of at least 0.5 cm, preferably at least 1 cm, and particularly preferably at least 1.5 cm, and further particularly preferably 3 cm. The additional connecting element 54a is configured and / or the additional valve element 58a is arranged such that the additional fluid passage 46a is at least substantially straight in the guiding direction 114a toward the additional connecting element 54a and in the opposite direction with respect to the additional valve element 58a at a minimum distance 112a of at least 0.5 cm, preferably at least 1 cm, and particularly preferably at least 1.5 cm, and further particularly preferably 3 cm. The guiding directions 114a of the connecting element 52a and the additional connecting element 54a are at least substantially parallel to each other. The regions 98a of fluid passages 44a and 46a defined by connecting elements 52a and additional connecting elements 54a are constructed particularly along a curved, at least substantially L-shaped guide path 116a. The guide path 116a is constructed at least partially, particularly in the regions 98a of fluid passages 44a and 46a where valve elements 56a and additional valve elements 58a are arranged, and is at least substantially straight. The guiding direction 114a of connecting elements 52a and additional connecting elements 54a is preferably oriented along the guide path 116a, particularly from the end region 80a on the fluid guiding element side toward the end region 96a on the wiper adapter side of fluid passages 44a and 46a.

[0041] Two fixing elements 62a are arranged on the connecting element 52a and the other connecting element 54a at least substantially perpendicular to the central axis 102a of the sleeve 92a of the connecting element 52a and the other connecting element 54a. The connecting element 52a and the other connecting element 54a are particularly configured to move along a connecting axis 110a for fluid-technically connecting with the fluid interface element 50a. Preferably, the connecting axis 110a is oriented at least substantially perpendicular to the central axis 102a of the sleeve 92a of the connecting element 52a and the other connecting element 54a and / or at least substantially parallel to the central axis 104a of the other sleeve 94a of the connecting element 52a and the other connecting element 54a. The fixing element 62a is preferably configured to cooperate with the mating fixing element 64a during movement along the connecting axis 110a, particularly to engage with the mating fixing element 64a, for securing the connecting element 52a and the other connecting element 54a. The wiper arm adapter 28a, particularly the connecting unit 48a, preferably has an operating element 118a, which is arranged on the connecting element 52a and / or another connecting element 54a. The operating element 118a is particularly configured to separate the fixing element 62a from the mating fixing element 64a when operated by an operator, especially to separate the connecting element 52a and the other connecting element 54a from the fluid interface element 50a. Preferably, the coupling element 66a, valve element 56a, and / or another valve element 58a are functionally coupled to the operating element 118a and / or the fixing element 62a when the connecting element 52a and the other connecting element 54a are separated from the fluid interface element 50a, in order to close the valve element 56a and / or the other valve element 58a. In particular, it is conceivable that the operating element 118a and / or the fixing element 62a are configured such that the valve element 56a and / or the additional valve element 58a are closed, and / or held in the closed state, especially by the coupling element 66a, when the operating element 118a is operated and / or the fixing element 62a is released from the mating fixing element 64a.

[0042] Figure 4 Further embodiments of the invention are illustrated below. The following description and drawings are essentially limited to the differences between the embodiments, wherein references to elements with the same designation, especially those having the same reference numerals, may also be made in principle. Figures 1 to 3 Other embodiments are illustrated in the accompanying drawings and / or descriptions. To distinguish the embodiments, in... Figures 1 to 3 The letter 'a' is placed after the reference numerals in the embodiments shown in the figures. Figure 4 In one embodiment, the letter b is used instead of the letter a.

[0043] Figure 4The side view shows a partial diagram of an alternative design for a wiper arm adapter 28b of a windshield wiper arm 14b of a windshield wiper 10b. The wiper arm adapter 28b includes two fluid channels 44b and 46b for guiding fluid and a connecting unit 48b, which is used, particularly in fluid technology, to connect the fluid channels 44b and 46b to the fluid guiding element 36b of the wiper arm 14b and / or the wiper blade adapter 30b, particularly the fluid interface element 50b of the wiper blade adapter 30b. The connecting unit 48b includes a connecting element 52b and another connecting element 54b, which respectively at least partially define one of the fluid channels 44b and 46b. The connecting unit 48b includes a valve element 56b and another valve element 58b, wherein the valve element 56b is arranged on the connecting element 52b, and the other valve element 58b is arranged on the other connecting element 54b. Valve element 56b and another valve element 58b are configured for fluid-technical connection of the fluid passages 44b, 46b to the wiper adapter 30b, particularly the fluid interface element 50b, which can be closed. However, other designs are also conceivable for the wiper arm adapter 28b, particularly the connecting unit 48b, which may have a number of connecting elements 52b, 54b, fluid passages 44b, 46b and / or valve elements 56a, 58a, not two, but one or more. Figure 4 The wiper arm adapter 28b shown has at least substantially the same characteristics as in... Figures 1 to 3 The description of the wiper arm adapter device 28b is similar to the design scheme described in the description, thus regarding Figure 4 The design of the wiper arm adapter 28b shown can be at least substantially referenced. Figures 1 to 3 The description. And in Figures 1 to 3 The description of the wiper arm adapter device 28a is different. Figure 4The valve element 56b and the additional valve element 58b of the wiper arm adapter device 28b shown are preferably arranged in the end region 96b on the wiper adapter side of the fluid channels 44b, 46b. The connecting element 52b is at least partially configured as a sleeve 94b in its connecting region 90b, wherein the valve element 56b is at least partially arranged in the connecting region 90b of the connecting element 52b. The additional connecting element 54b is at least partially configured as a sleeve 94a in its connecting region 90b, wherein the additional valve element 58b is at least partially arranged in the connecting region 90b of the additional connecting element 54b. The connecting element 52b and the other connecting element 54b are constructed and / or arranged such that the fluid passages 44b, 46b are constructed at least substantially straight in a guiding direction 114b toward the connecting element 52b and the other connecting element 54b and in the opposite direction to a minimum distance 112b of at least 0.5 cm, preferably at least 1 cm, and particularly preferably at least 1.5 cm and further particularly preferably 1.5 cm from the valve element 56b and / or the other valve element 58b.

Claims

1. A wiper arm adapter device, comprising at least one fluid channel (44a, 46a; 44b, 46b) for guiding fluid and at least one connecting unit (48a; 48b), said connecting unit for connecting the fluid channel (44a, 46a; 44b, 46b) to a fluid guiding element (36a; 36b) and / or a wiper blade adapter (30a; 30b) of a wiper arm (14a; 14b), wherein said connecting unit (48a; 48b) has at least one connecting element (52a, 54a; 52b, 54b), said connecting element at least partially defining the fluid channel (44a, 46a; 44b, 46b), characterized in that, The connecting unit (48a; 48b) has at least one valve element (56a, 58a; 56b, 58b) arranged on the connecting element (52a, 54a; 52b, 54b) and configured for a fluid-technical connection of a closable fluid passage (44a, 46a; 44b, 46b) to a wiper adapter (30a; 30b), wherein the valve element (56a, 58a; 56b, 58b) is arranged such that the fluid passage (44a, 46a; 44b, 46b) is constructed at least substantially straight within a minimum distance (112a; 112b) of at least 0.5 cm from the valve element (56a, 58a; 56b, 58b) along and / or against the guiding direction (114a; 114b) of the connecting element (52a, 54a; 52b, 54b).

2. The wiper arm adapter device according to claim 1, characterized in that, The valve elements (56a, 58a; 56b, 58b) are configured to close the fluid passage (44a, 46a; 44b, 46b) according to the fluid state characteristic parameters.

3. The wiper arm adapter device according to claim 1 or 2, characterized in that, The valve elements (56a, 58a; 56b, 58b) are arranged in the end region (96a; 96b) on the wiper adapter side or the end region (80b) on the fluid guide element side of the fluid passage (44a, 46a; 44b, 46b).

4. The wiper arm adapter device according to claim 1 or 2, characterized in that, The connecting elements (52a, 54a; 52b, 54b) are at least partially configured as sleeves (92a, 94a; 94b) in at least one connection region (88a, 90a; 90b) of the connecting elements (52a, 54a; 52b, 54b), wherein the valve elements (56a, 58a; 56b, 58b) are at least partially arranged within the connection region (88a, 90a; 90b).

5. The wiper arm adapter device according to claim 1 or 2, characterized in that, The valve elements (56a, 58a; 56b, 58b) are constructed as Dunlop valves, French valves, Heinrich valves, diaphragm valves, or check valves.

6. The wiper arm adapter device according to claim 1 or 2, characterized in that, The connecting unit (48a; 48b) has at least one additional connecting element (54a; 54b) and at least one additional valve element (58a; 58b), wherein the additional valve element (58a; 58b) is arranged on the additional connecting element (54a; 54b).

7. The wiper arm adapter device according to claim 1 or 2, characterized in that, The valve elements (56a, 58a; 56b, 58b) can be electrically, electronically, mechanically, pneumatically and / or hydraulically controlled.

8. The wiper arm adapter device according to claim 1, characterized in that, The connecting unit is used to connect the fluid channels (44a, 46a; 44b, 46b) to the fluid guiding elements (36a; 36b) and / or wiper adapters (30a; 30b) of the wiper arms (14a; 14b) in a fluid technology manner.

9. The wiper arm adapter device according to claim 1, characterized in that, The connecting unit is used to fluidically connect the fluid channels (44a, 46a; 44b, 46b) to the fluid guiding elements (36a; 36b) of the wiper arm (14a; 14b) and / or the fluid interface elements (50a; 50b) of the wiper adapter (30a; 30b).

10. The wiper arm adapter device according to claim 1, characterized in that, The valve element is configured for a fluid-technical connection between a fluid passage (44a, 46a; 44b, 46b) and a fluid interface element (50a; 50b) that can be closed.

11. The wiper arm adapter device according to claim 2, characterized in that, The valve elements (56a, 58a; 56b, 58b) are configured to close the fluid passages (44a, 46a; 44b, 46b) according to the state characteristic parameters of the fluid in the vicinity (72a; 72b) adjacent to the valve elements (56a, 58a; 56b, 58b) arranged in the fluid passages (44a, 46a; 44b, 46b).

12. The wiper arm adapter device according to claim 2, characterized in that, The valve elements (56a, 58a; 56b, 58b) are configured to waterproofly close the fluid channels (44a, 46a; 44b, 46b) based on the state characteristics of the fluid in the vicinity (72a; 72b) adjacent to the valve elements (56a, 58a; 56b, 58b) arranged in the fluid channels (44a, 46a; 44b, 46b).

13. A wiper arm having at least one wiper arm adapter (28a; 28b) according to any one of the preceding claims.

14. A windshield wiper having at least one wiper blade (16a) and at least one wiper arm (14a; 14b) according to claim 13.

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