Wiper arm device and wiper device

Abstract

The present invention relates to a wiper arm device (10a; 10b) having at least one wiper arm adapter (12a; 12b); at least one fluid coupling element (18a; 18b) for fluid connection with at least one wiper blade (62a; 62b); at least one wiper arm (14a; 14b); at least one fluid conduit (16a, 16a'; 16b, 16b') for transporting wiper fluid along the wiper arm (14a; 14b) to the fluid coupling element (18a; 18b); and an electrical heating conduit (20a, 20a'; 20b) arranged in the at least one fluid conduit (16a, 16a'; 16b, 16b') for heating the at least one fluid conduit (16a, 16a'; 16b, 16b'). It is proposed that at least one heating conduit (20a, 20a'; 20b) extends through at least one fluid conduit (16a, 16a'; 16b, 16b') and turns at the fluid coupling element (18a; 18b) to return through at least one fluid conduit (16a, 16a'; 16b, 16b').

Description

Background Technology

[0001] A wiper arm device has been proposed, the wiper arm device having at least one wiper arm adapter; having at least one fluid coupling element for fluid connection with at least one wiper blade; having at least one wiper arm bar; having at least one fluid conduit for transporting wiper fluid along the wiper arm bar to the fluid coupling element; and having an electrical heating conduit arranged in the at least one fluid conduit for heating the at least one fluid conduit. Summary of the Invention

[0002] The present invention relates to a wiper arm device having at least one wiper arm adapter; having at least one fluid coupling element for fluid connection with at least one wiper blade; having at least one wiper arm; having at least one fluid conduit for transporting wiper fluid along the wiper arm to the fluid coupling element; and having an electrical heating conduit arranged in the at least one fluid conduit for heating the at least one fluid conduit.

[0003] It is proposed that at least one heating pipe extends through at least one fluid pipe and turns at the fluid coupling element so as to return through at least one fluid pipe.

[0004] "Wiper arm device" should preferably be understood as at least one component, preferably a sub-component, of a window wiper. Preferably, the wiper arm device can also include the entire window wiper, especially with wiper blades. Preferably, the wiper arm device is provided for use in a vehicle. Preferably, the wiper arm device, especially as a component of a window wiper, is provided for cleaning surfaces, preferably window glass in a vehicle. Preferably, the wiper arm device is coupled to the wiper arm actuator of the vehicle, preferably the vehicle, for cleaning the vehicle window glass. "Provided" should preferably be understood as preferably specifically constructed, set, designed, and / or equipped. "Setting an object for a specific function" should preferably be understood as the object satisfying and / or performing the determined function in at least one use state and / or operating state. "Operating state" should preferably be understood as a state in which the wiper arm device is prepared for operation and / or in operation for the wiping process and / or wiping operation, in which the wiper blade, especially the wiper strip unit of the window wiper, is preferably guided within the vehicle window glass and advantageously abuts against the vehicle window glass.

[0005] Preferably, the wiper arm has a longitudinal axis. "Longitudinal axis" should preferably be understood as an axis oriented parallel to the longest edge of a smallest geometric cuboid that just completely encloses the object. Preferably, the longitudinal axis of the wiper arm is oriented at least substantially parallel to the longitudinal axis of the entire wiper assembly, particularly the wiper blades, preferably at least in the operating state. "Substantially parallel" should be particularly understood here as an orientation relative to a reference direction, particularly in a plane, wherein the direction has a deviation of particularly less than 8°, advantageously less than 5°, and particularly advantageously less than 2° relative to the reference direction.

[0006] Preferably, the wiper arm has a vehicle interface for connection to a vehicle at its end extending along the longitudinal axis of the wiper arm. Preferably, the wiper arm adapter is connected to the wiper arm at its end opposite the vehicle interface. Preferably, the wiper arm adapter is configured as a side-lock adapter. Preferably, the wiper arm adapter is connected to the wiper arm in a particularly inseparable, preferably integral, manner. "Integral" should preferably be understood as at least a material-locking connection, for example by welding, bonding, spraying, and / or other processes that are meaningful to those skilled in the art, and / or advantageously understood as being formed in one piece, such as by casting and / or by a single-component or multi-component injection molding method and advantageously by a single blank. Preferably, the wiper arm adapter includes at least one pin element, particularly for connection to a wiper blade adapter. Preferably, the pin element is configured to at least partially insert into the wiper blade adapter. Preferably, the pin element defines the pivot axis, around which the wiper blade adapter is pivotally connected to the wiper arm adapter.

[0007] Preferably, the wiper arm adapter has a retainer. Preferably, the retainer is configured to prevent the wiper blade adapter from slipping off the pin element of the wiper arm adapter, particularly along the insertion axis, particularly the pivot axis, and to prevent the wiper blade adapter from pivoting at a point about the rotation axis. Preferably, the retainer is oriented at least substantially perpendicular to the longitudinal axis of the wiper arm adapter. The expression "substantially perpendicular" should particularly define the orientation relative to a reference direction, wherein the reference direction and the reference direction, particularly when viewed in the projection plane, form a 90° angle, and the angle has a maximum deviation particularly less than 8°, advantageously less than 5°, and particularly advantageously less than 2°.

[0008] Preferably, the fluid coupling element is at least partially configured as a fluid plug element, particularly a fluid plug-in coupling element. Preferably, the fluid coupling element is at least partially configured as a fluid coupling plug element. Preferably, the fluid coupling element is connected to at least one fluid line. Preferably, the wiper arm device includes at least two, particularly identical, fluid lines. Preferably, the fluid coupling element is connected to two fluid lines. Preferably, at least one fluid coupling element is configured as an end member of at least one fluid line. Preferably, at least one fluid coupling element defines at least one fluid channel, which is particularly bendable at least 45°, and especially preferably at least 90°. Preferably, the connection direction, particularly the plugging direction, of at least one fluid coupling element is perpendicular to the longitudinal axis of the wiper arm, particularly the wiper arm adapter, and preferably oriented at least in the connected state. Preferably, at least one fluid coupling element defines at least two fluid channels, which extend within the fluid coupling element, particularly parallel to each other.

[0009] Preferably, at least one fluid conduit has a maximum extension corresponding to at least one maximum extension of the wiper arm along its longitudinal axis. Preferably, at least one fluid conduit has a maximum extension longer than the maximum extension of the wiper arm along its longitudinal axis. Preferably, at least one heating conduit extends from the end of the at least one fluid conduit opposite to the fluid coupling element, particularly the vehicle end, through the at least one fluid conduit, connects to the fluid coupling element, and extends through the at least one fluid conduit back to the end of the at least one fluid conduit opposite to the fluid coupling element. At least one heating conduit is capable of extending from the end of the at least one fluid conduit opposite to the fluid coupling element, particularly the vehicle end, through the at least one fluid conduit to a component of the fluid coupling element at which the at least one heating conduit is suspended, and / or connected. At least one heating conduit is capable of extending through the same fluid conduit back to the end of the at least one fluid conduit opposite to the fluid coupling element, particularly the vehicle end. At least one heating line extends from the end of at least one fluid line away from the fluid coupling element, particularly the vehicle end, through the at least one fluid line to the element of the fluid coupling element, at least one heating line is particularly suspended at said element, and / or at least one heating line is connected to said element, and extends through another of the at least two fluid lines back to the end of at least one of the at least two fluid lines away from the fluid coupling element, particularly the vehicle end. Preferably, the wiper arm device includes at least two heating lines, each extending toward the fluid coupling element, particularly from the vehicle end, to said fluid coupling element, and extending through one of the two fluid lines, particularly from the fluid coupling element, back to the vehicle end. The wiper arm device can include at least two heating lines, each extending through one of the two fluid lines toward the fluid coupling element, particularly from the vehicle end, to said fluid coupling element, and extending through the other of the two fluid lines, particularly from the fluid coupling element, back to the vehicle end.

[0010] According to the design of the wiper arm device, advantageous direct heating power can be achieved in at least one fluid line. Especially advantageously, large heating power can be achieved in at least one fluid line. Especially advantageously, rapid defrosting of the fluid line can be achieved. Especially advantageously, antifreeze can be used in a diluted manner in the wiper fluid reservoir.

[0011] Furthermore, it is proposed that at least one heating line has a maximum longitudinal extension within the fluid line, said maximum longitudinal extension being at least 10% greater than the maximum longitudinal extension of at least one fluid line. Preferably, the maximum longitudinal extension of at least one heating line, particularly within at least one fluid line, is at least 20%, preferably at least 50%, and particularly preferably at least 100% greater than the maximum longitudinal extension of at least one fluid line. Particularly preferably, at least one heating line has a maximum longitudinal extension within at least one fluid line, said maximum longitudinal extension being twice the maximum longitudinal extension of at least one fluid line. Preferably, at least one heating line extends from the electrical and fluid connection element through at least one fluid line to the fluid coupling element and returns. Preferably, at least two heating lines have the same maximum longitudinal extension, particularly length. Preferably, at least two fluid lines have the same maximum longitudinal extension, particularly length. Preferably, at least two fluid lines are arranged side-by-side with each other, particularly at least substantially parallel, along the wiper arm, particularly from the electrical and fluid connection element to the fluid coupling element. Preferably, other heating lines are arranged within each fluid line. It enables advantageous planar heating of at least one fluid conduit. In particular, it advantageously prevents scraper fluid residue from freezing within at least one fluid conduit, especially along its entire length. It also advantageously enables uniform heat transfer into at least one fluid conduit.

[0012] Furthermore, it is proposed that at least one fluid coupling element has at least one hook element, and at least one heating line, particularly in the middle region of the heating line, is suspended at the hook element, particularly for steering. Preferably, at least one fluid coupling element includes a coupling base. Preferably, at least one fluid coupling element includes a plug element. Preferably, the coupling base constitutes a connecting sleeve for at least two fluids. Preferably, at least one of the connecting sleeves for two fluids is configured for connection to at least one fluid line. Preferably, at least one of the connecting sleeves for two fluids is configured for connection to a fluid connecting element. Preferably, the coupling base defines at least two bearing recesses for connection to a cover element of the wiper arm adapter, particularly for movably supporting a component of the wiper arm device. Preferably, the connecting sleeves for at least two fluids are oriented with a maximum deviation of 90° relative to each other, particularly a maximum deviation of 20°. Preferably, the coupling base constitutes a connecting sleeve for at least four fluids. Preferably, at least two of the connecting sleeves for four fluids are configured for connection to at least two fluid lines. Preferably, at least two of the four fluid connecting sleeves are configured for connection to the fluid connecting element. Preferably, the coupling base defines at least one heating fixing opening, particularly on the outer side opposite the connecting sleeve. Preferably, the heating fixing opening is configured as a through opening, through which the inner cavity of the coupling base can be reached. Preferably, at least one plug element is configured as a pin. Preferably, at least one plug element is configured to fluidly and sealingly close the heating fixing opening. Preferably, at least one hook element is connected to the plug element. Preferably, at least one hook element is arranged at the end of the plug element with the maximum longitudinal extension, the plug element being arranged in the coupling base in the connection state between the plug element and the coupling base. Preferably, at least one hook element is configured to fix at least one heating line. At least one heating line can be clamped at at least one hook element. Alternatively, at least one heating line can be bonded to at least one plug element. At least one heating line can be fluidly and sealingly bonded to at least one plug element at two different locations. It enables advantageous fixation of at least one heating line at the fluid coupling element, thereby ensuring consistent heating power input along the entire fluid line, especially during the wiping process of the wiper arm device.

[0013] Furthermore, it is proposed that the wiper arm device has an electrically heated wiper blade line extending along the wiper arm in addition to at least one fluid line to supply electrical power to the wiper blades. Preferably, at least one wiper blade heating line extends along the wiper arm from the vehicle end of the wiper arm to the wiper arm adapter, in addition to at least one fluid line, particularly in addition to at least two fluid lines. Preferably, at least one wiper blade heating line is configured as a separate line relative to at least one fluid line and relative to at least one heating line. This allows for an advantageous separation of the fluid line electrical device and the wiper blade heating electrical device. Particularly advantageously, the fluid line can be heated independently of the wiper blades.

[0014] Furthermore, it is proposed that the wiper arm device has at least one electrical and fluid connection element, at least one heating line capable of being connected to an electrical supply line via the electrical and fluid connection element, and at least one fluid line capable of being connected to a fluid supply line via the electrical and fluid connection element. Preferably, the at least one electrical and fluid connection element constitutes at least two, particularly at least four, fluid connection base sleeves. Preferably, one, particularly two, of the at least two, particularly at least four connection base sleeves are configured at the electrical and fluid connection element for connection to at least one fluid line. Preferably, one, particularly at least two, of the at least two, particularly at least four connection base sleeves are configured at the electrical and fluid connection element for connection to a fluid supply line. Preferably, the electrical supply line is constructed as part of the vehicle. Preferably, the fluid supply line is constructed as part of the vehicle. It enables an advantageously compact, particularly stable, and preferably robust connection between at least one fluid conduit and a heating conduit arranged in at least one fluid conduit and a fluid supply conduit and an electrical supply conduit.

[0015] Furthermore, it is proposed that the electrical connection direction of the electrical and fluid connection element is oriented at least substantially perpendicular to the fluid connection direction of the electrical and fluid connection element. Preferably, the electrical and fluid connection element constitutes an electrical plug. Preferably, the electrical plug is arranged on the side of the electrical and fluid connection element opposite to at least one connection base sleeve configured for connection to at least one fluid line. Preferably, the electrical plug is arranged aligned with at least one connection base sleeve configured for connection to at least one fluid line. Preferably, the connection direction of the electrical plug is oriented parallel to the connection direction of at least one connection base sleeve configured for connection to at least one fluid line. Preferably, the connection direction of the electrical plug is oriented perpendicular to the connection direction of at least one connection base sleeve configured for connection to at least one fluid supply line. Preferably, the electrical plug defines the electrical connection direction. Preferably, at least one connection base sleeve configured for connection to at least one fluid supply line defines the fluid connection direction of the electrical and fluid connection element. It enables non-slip, and especially mutually fixed, electrical and fluid connections between electrical and fluid connection elements and electrical and fluid supply lines.

[0016] Furthermore, it is proposed that the wiper arm assembly has at least one additional electrical connection element, through which at least one electrical wiper blade heating line can be connected to an electrical supply line, and that the additional electrical connection element is constructed differently from the electrical and fluid connection elements. Preferably, at least one additional electrical connection element is connected to the wiper blade heating line at the vehicle end of the wiper arm for connecting the wiper blade heating line to the electrical supply line. This allows for advantageous complete separation between the fluid line and the heating line for the wiper blade.

[0017] Furthermore, it is proposed that the electrical and fluid connection element has at least one sealing element that separates the electrical connection area of ​​the electrical and fluid connection element from the fluid connection area of ​​the electrical and fluid connection element. Preferably, at least one sealing element is arranged between the electrical plug and the connection base sleeve. Preferably, the entire connection base sleeve is connected to the same cavity. Preferably, the sealing element seals the cavity relative to the electrical plug. Preferably, the electrical plug defines the electrical connection area of ​​the electrical and fluid connection element. Preferably, the connection base sleeve and the cavity between the connection base sleeves define the fluid connection area of ​​the electrical and fluid connection element. This enables the realization of an electrical and fluid connection element that advantageously prevents internal short circuits.

[0018] Furthermore, it is proposed that at least one heating conduit extends from the electrical and fluid connection element through at least one fluid conduit to at least one hook element and extends back to the electrical and fluid connection element. Preferably, at least one heating conduit extends from the electrical and fluid connection element through at least one fluid conduit to at least one hook element and extends back to the electrical and fluid connection element. Preferably, at least one heating conduit extends from the electrical and fluid connection element through at least one fluid conduit to at least one hook element and extends back to the electrical and fluid connection element through the same fluid conduit. Alternatively, at least one heating conduit can extend from the electrical and fluid connection element through at least one fluid conduit to at least one hook element and extend back to the electrical and fluid connection element through another of the at least two fluid conduits. Alternatively, at least two heating conduits can, in particular, extend from the electrical and fluid connection element through one of the at least two fluid conduits to at least one hook element and extend back to the electrical and fluid connection element through the other of the at least two fluid conduits. In particular, compared to a single extension of the heating line through at least one fluid line, it is possible to achieve an advantageous doubling of heating power input to at least one fluid line.

[0019] Furthermore, a wiper device is proposed, which includes a wiper blade, as particularly mentioned, and a wiper arm device according to the invention, as particularly mentioned.

[0020] Here, the wiper arm device and / or wiper device according to the present invention should not be limited to the applications and embodiments described above. The wiper arm device and / or wiper device according to the present invention can, in order to fulfill the functional modes described herein, have numbers different from the numbers of the various elements, components, and units mentioned herein. Furthermore, values ​​within the range of values ​​specified in this disclosure should also be considered disclosed and can be used arbitrarily. Attached Figure Description

[0021] Further advantages are illustrated in the following figures. Two embodiments of the invention are shown in the figures. The figures, description, and claims encompass a large number of combined features. Those skilled in the art will also consider the features individually in a suitable manner and combine them into other meaningful combinations.

[0022] in: Figure 1 A wiper device according to the invention is illustrated in schematic diagram, having a wiper arm device according to the invention and a wiper blade. Figure 2A portion of the wiper arm device according to the present invention and the wiper blades are shown in the schematic diagram. Figure 3 Another part of the wiper arm device according to the invention is shown in the schematic diagram; Figure 4 A partially transparent schematic diagram illustrates a wiper arm device according to the invention, including a wiper blade. Figure 5 A portion of an alternative wiper arm device according to the invention is shown in the schematic diagram; and Figure 6 The schematic diagram illustrates the plug element of an alternative wiper arm device according to the invention. Detailed Implementation

[0023] Figure 1 and Figure 2 A windshield wiper device 60a is shown. The windshield wiper device 60a includes a wiper blade 62a. The wiper blade 62a includes a wiper blade adapter 64a. The wiper blade 62a is configured to wipe the windshield of a vehicle. The wiper blade 62a has a longitudinal axis 66a. The windshield wiper device 60a includes a wiper arm device 10a.

[0024] Wiper arm assembly 10a includes a wiper arm 14a. The wiper arm 14a has a longitudinal axis 24a. The longitudinal axis 24a of the wiper arm 14a is oriented parallel to the longitudinal axis 68a of the entire wiper assembly 60a with a deviation of up to 30°. Wiper arm assembly 10a includes a wiper arm adapter 12a. The wiper arm adapter 12a is configured for connection to a wiper blade adapter 64a, particularly for connecting a wiper blade 62a to the wiper arm 14a. The wiper arm adapter 12a is configured as a side-lock adapter. The wiper arm adapter 12a is integrally connected to the wiper arm 14a (see [link to documentation]). Figure 2 ).

[0025] The wiper arm adapter 12a includes a pin element 26a, particularly for pivotally connecting to a wiper blade adapter 64a of the wiper blade 62a. The pin element 26a is configured to partially insert into the wiper blade adapter 64a. The pin element 26a defines a pivot axis 28a about which the wiper blade adapter 64a is pivotally connected to the wiper arm adapter 12a. The wiper arm adapter 12a has a retainer 30a. The longitudinal axis of the retainer 30a is oriented perpendicular to the longitudinal axis 32a of the wiper arm adapter 12a with a deviation of up to 15°.

[0026] The wiper arm 14a has a vehicle interface 34a at its end extending along the longitudinal axis 24a of the wiper arm 14a, particularly at the vehicle end 22a, for connection to a vehicle. A wiper arm adapter 12a connects to the wiper arm 14a at its end opposite the vehicle interface 34a, particularly at the adapter end 38a (see [link]). Figure 3 ).

[0027] The wiper arm assembly 10a includes two fluid lines 16a, 16a'. The fluid lines 16a, 16a' are configured to transport wiper fluid along the wiper arm 14a to a fluid coupling element 18a. The fluid lines 16a, 16a' are connected to the wiper arm 14a in sections, particularly at the end of the wiper arm 14a facing the wiper arm adapter 12a, and particularly at the vehicle end 22a of the wiper arm 14a facing away from the wiper arm adapter 12a. The two fluid lines 16a, 16a' have a maximum extension greater than the maximum extension of the wiper arm 14a along its longitudinal axis 24a. The two fluid lines 16a, 16a' are constructed identically.

[0028] The wiper arm assembly 10a includes two electrically heated pipes 20a and 20a'. The heated pipes 20a and 20a' are configured to heat fluid pipes 16a and 16a'. The heated pipes 20a and 20a' are arranged within the fluid pipes 16a and 16a'.

[0029] The wiper arm assembly 10a includes a fluid coupling element 18a. The fluid coupling element 18a is configured for fluid connection with the wiper blade 62a. The fluid coupling element 18a is configured as a fluid plug element, particularly a fluid plug-in coupling element. The fluid coupling element 18a is configured as a dual-fluid dual-plug element. The fluid coupling element 18a is connected to two fluid lines 16a, 16a'. The fluid coupling element 18a is configured as an end component of the two fluid lines 16a, 16a'.

[0030] The fluid coupling element 18a includes a coupling base 40a. The coupling base 40a forms four fluid connecting sleeves 42a, 42a', 44a, 44a'. Two of the four fluid connecting sleeves 42a, 42a', 44a, 44a' are connected to two fluid lines 16a, 16a'. Two of the four fluid connecting sleeves 42a, 42a', 44a, 44a' are configured for connection to the fluid connecting element 70a of the wiper adapter 64a. Two of the four fluid connecting sleeves 42a, 42a', 44a, 44a' are oriented at a 90° angle relative to the other two connecting sleeves 44a, 44a'.

[0031] The coupling base 40a has two heating and fixing openings 46a and 46a' defined on its outer side opposite to the connecting sleeves 42a and 42a', the connecting sleeves being connected to two fluid lines 16a and 16a'. The heating and fixing openings 46a and 46a' are configured as through openings, through which the inner cavity of the coupling base 40a can be reached.

[0032] The fluid coupling element 18a, and especially the coupling base 40a, defines two fluid channels, particularly those bent at 90°, within its inner cavity. The two fluid channels extend parallel to each other within the fluid coupling element 18a. The coupling base 40a defines two bearing recesses for connection with a cover element (not shown) of the wiper arm adapter 12a, particularly for movably supported components of the wiper arm device 10a.

[0033] The coupling direction of the fluid coupling element 18a for connection with the wiper adapter 64a, especially the insertion direction, is perpendicular to the longitudinal axis 24a of the wiper arm 14a, especially the wiper arm adapter 12a, and perpendicular to the longitudinal axis of the retainer 30, especially the pin element 26, especially the rotation axis, especially in the connected state.

[0034] The fluid coupling element 18a includes two plug elements 48a and 48a'. The plug elements 48a and 48a' are constructed in a pin-like manner. The plug elements 48a and 48a' fluid-tightly seal the heating fixing openings 46a and 46a'.

[0035] The fluid coupling element 18a has two hook elements 50a, 50a' (see...) Figure 4 The corresponding hook elements 50a and 50a' are connected to one of the two plug elements 48a and 48a'. Figure 3In order to show the plug elements 48a, 48a' and the hook elements 50a, 50a', the coupling substrate 40a is shown transparently.

[0036] Hook elements 50a and 50a' are respectively arranged at the end of the maximum longitudinal extension of one of the plug elements 48a and 48a', wherein the corresponding end is arranged in the coupling base 40a in the state of connection between the plug elements 48a and 48a' and the coupling base 40a.

[0037] Hook elements 50a and 50a' are configured to secure heating pipes 20a and 20a'. Hook elements 50a and 50a' are configured to clamp heating pipes 20a and 20a'. Heating pipes 20a and 20a' are suspended, and especially turned, in the middle area of ​​heating pipes 20a and 20a'.

[0038] Heating pipes 20a and 20a' extend from the fluid pipes 16a and 16a' at the ends of the fluid coupling elements 18a away from the fluid, particularly the vehicle ends 36a, through the fluid pipes 16a and 16a', suspended at the fluid coupling elements 18a, and extend through the corresponding fluid pipes 16a and 16a' back to the ends of the fluid pipes 16a and 16a' away from the fluid coupling elements 18a. Heating pipes 20a and 20a' extend from the fluid pipes 16a and 16a' at the ends of the fluid coupling elements 18a away from the fluid, particularly the vehicle ends 36a, through the fluid pipes 16a and 16a' to the hook elements 50a and 50a', which are suspended at the hook elements, and extend through the same fluid pipes 16a and 16a' back to the ends of the fluid pipes 16a and 16a' away from the fluid coupling elements 18a, particularly the vehicle ends 22a. Two heating pipes 20a and 20a' respectively extend through one of two fluid pipes 16a and 16a' toward the fluid coupling element 18a, particularly from the vehicle end 36a to the fluid coupling element, and particularly from the fluid coupling element 18a back to the vehicle end 36a.

[0039] The wiper arm assembly 10a has an electrically heated wiper blade line 52a. The electrically heated wiper blade line 52a is configured to supply electrical power to the wiper blade 62a. The electrically heated wiper blade line 52a extends along the wiper arm 14a in addition to two fluid lines 16a, 16a'.

[0040] The wiper blade heating line 52a extends along the wiper arm 14a from the vehicle end 22a of the wiper arm 14a, outside the two fluid lines 16a, 16a', to the wiper arm adapter 12a. Preferably, at least one wiper blade heating line 52a is configured as a separate line relative to the fluid lines 16a, 16a' and relative to the heating lines 20a, 20a'.

[0041] The wiper arm assembly 10a has at least one electrical and fluid coupling element 56a. The wiper arm assembly 10a has another electrical coupling element 54a. The other coupling element 54a is constructed differently from the electrical and fluid coupling element 56a (see [link to documentation]). Figure 2 ).

[0042] The electric wiper blade heating line 52a can be connected to the electrical supply line via an additional connecting element 54a. The additional electrical connecting element 54a is connected to the wiper blade heating line 52a at the vehicle end 22a of the wiper arm 14a for connecting the wiper blade heating line 52a to the electrical supply line.

[0043] Heating lines 20a and 20a' can be connected to an electrical supply line via an electrical and fluid connection element 56a. Fluid lines 16a and 16a' can be connected to a fluid supply line via an electrical and fluid connection element 56a. The electrical supply line is an integral part of the vehicle. The fluid supply line is an integral part of the vehicle.

[0044] Electrical and fluid connection element 56a constitutes four fluid connection base sleeves 58a, 58a', 59a, and 59a'. Two of the four connection base sleeves 58a and 58a' at the electrical and fluid connection element 56a, 58a', 59a, and 59a', 58a and 58a', are configured to connect to fluid lines 16a and 16a'. Two of the four connection base sleeves 59a and 59a' at the electrical and fluid connection element 56a, 58a', 59a, and 59a', 59a and 59a', 59a and 59a', are configured to connect to a fluid supply line. Electrical and fluid connection element 56a is configured to establish a wiper fluid connection from wiper arm device 10a to the vehicle. Electrical and fluid connection element 56a is configured to establish an electrical supply connection from wiper arm device 10a to the vehicle. All connecting base sleeves 58a, 58a', 59a, and 59a' are connected to the same cavity.

[0045] The electrical connection direction of the electrical and fluid connection element 56a is oriented perpendicular to the fluid connection direction of the electrical and fluid connection element 56a.

[0046] Electrical and fluid connection element 56a constitutes an electrical plug 72a. The electrical plug 72a is arranged on the side of the electrical and fluid connection element 56a opposite to the connecting base sleeves 58a, 58a', which are configured to connect to at least one fluid line 16a, 16a'. The electrical plug 72a is aligned with the connecting base sleeves 58a, 58a', which are configured to connect to the fluid lines 16a, 16a'. Preferably, the connection direction of the electrical plug 72a is parallel to the connection direction of the connecting base sleeves 58a, 58a', which are configured to connect to the fluid lines 16a, 16a'. The connection direction of the electrical plug 72a is perpendicular to the connection direction of the connecting base sleeves 59a, 59a', which are configured to connect to at least one fluid supply line. The electrical plug 72a defines the electrical connection direction of the electrical and fluid connection element 56a. Two connection base sleeves 59a, 59a', constructed for connection with a fluid supply line, define the fluid connection direction of the electrical and fluid connection element 56a.

[0047] The electrical and fluid connection element 56a has a sealing element 74a. The sealing element 74a separates the electrical connection area 76a of the electrical and fluid connection element 56a from the fluid connection area 78a of the electrical and fluid connection element 56a. The sealing element 74a keeps the electrical fluid away from the wiper fluid in the electrical and fluid connection element 56a. An electrical plug 72a defines the electrical connection area 76a of the electrical and fluid connection element 56a. Connection base sleeves 58a, 58a', 59a, 59a' and the cavity between the connection base sleeves 58a, 58a', 59a, 59a' define the fluid connection area 78a of the electrical and fluid connection element 56a. The sealing element 74a is arranged between the electrical plug 72a and the connection base sleeves 58a, 58a', 59a, 59a'. The sealing element 74a seals the cavity relative to the electrical plug 72a.

[0048] One of the corresponding heating pipes 20a and 20a' of the two heating pipes 20a and 20a' extends through one of the fluid pipes 16a and 16a' of the two fluid pipes 16a and 16a'. The heating pipes 20a and 20a' extend through the fluid pipes 16a and 16a' and turn at the fluid coupling element 18a to return through the corresponding fluid pipe 16a and 16a' of the two fluid pipes 16a and 16a'. The heating pipes 20a and 20a' are of the same length. The heating pipes 20a and 20a' have a maximum longitudinal extension within the fluid pipes 16a and 16a', said maximum longitudinal extension being at least 10% greater than the maximum longitudinal extension of one of the fluid pipes 16a and 16a'.

[0049] Heating lines 20a and 20a' each have a maximum longitudinal extension within fluid lines 16a and 16a', said maximum longitudinal extension being twice the maximum longitudinal extension of one of the fluid lines 16a and 16a'. Heating lines 20a and 20a' extend from the electrical and fluid connection element 56a through fluid lines 16a and 16a' to the fluid coupling element 18a and extend back. Heating lines 20a and 20a' have the same maximum longitudinal extension, particularly in length. The two fluid lines 16a and 16a' have the same maximum longitudinal extension, particularly in length. The two fluid lines 16a and 16a' are arranged side-by-side, particularly parallel, along the wiper arm 14a, particularly from the electrical and fluid connection element 56a to the fluid coupling element 18a. Other heating lines 20a and 20a' are arranged within each of the fluid lines 16a and 16a'.

[0050] Heating lines 20a and 20a' pass through fluid lines 16a and 16a' from the electrical and fluid connection element 56a to hook elements 50a and 50a' and then return to the electrical and fluid connection element 56a. Heating lines 20a and 20a' pass through fluid lines 16a and 16a' from the electrical and fluid connection element 56a to hook elements 50a and 50a' and then return to the electrical and fluid connection element 56a. Heating lines 20a and 20a' each pass through one of the fluid lines 16a and 16a' from the electrical and fluid connection element 56a to hook elements 50a and 50a' and then return to the electrical and fluid connection element 56a through the same fluid lines 16a and 16a'.

[0051] Wiper blade 62a has a heating band arranged on a spring guide rail. Wiper blade 62a has a male electrical connector soldered to the heating band. The male electrical connector is locked at wiper arm adapter 12a. The male electrical connector is pivotally locked at a pin element 26a at wiper arm adapter 12a. The heating band converts electrical energy into heat energy. The heating band distributes heat energy along wiper blade 62a. The heating band heats the end cap, the wiper strip unit with wiper lips, and the wiper blade adapter 62a of wiper blade 62a. Two heating pipe loops 20a, 20a' are arranged at wiper arm 14a. The heating pipe loops are respectively arranged in one of the fluid pipes 16a, 16a'. Heating lines 20a and 20a' are connected to hook elements 50a and 50a' at fluid coupling element 18a so as to remain in position when fluid lines 16a and 16a' move.

[0052] exist Figure 4 and Figure 5 Further embodiments of the invention are illustrated below. The following description and drawings are essentially limited to the differences between embodiments, wherein reference can also be made in principle to the drawings and / or descriptions of other embodiments, particularly those with the same reference numerals, with regard to components that are likely labeled, especially those bearing the same reference numerals. Figures 1 to 3 To distinguish the embodiments, in Figures 1 to 3 The letter 'a' is added after the reference numerals in the embodiments shown in the figures. Figure 4 and Figure 5 In one embodiment, the letter 'a' is replaced by the letter 'b'.

[0053] Figure 5 An alternative wiper device 60b is shown. Wiper device 60b includes a wiper blade 62b. Wiper blade 62b includes a wiper blade adapter 64b. The alternative wiper device 60b includes an alternative wiper arm device 10b.

[0054] Wiper arm assembly 10b includes a wiper arm 14b. Wiper arm assembly 10b includes two fluid lines 16b, 16b'. Wiper arm assembly 10b includes a fluid coupling element 18b. Wiper arm assembly 10b includes an electrically heated line 20b. Wiper arm assembly 10b includes an electrical and fluid connection element 56b (see...). Figure 1 ).

[0055] The alternative wiper arm device 10b is constructed similarly to the wiper arm device 10a shown in the foregoing embodiment, except for the altered arrangement of the fluid coupling element 18b and the two heating pipes 20b, 20b'.

[0056] The fluid coupling element 18b includes a plug element 80b (see...) Figure 6The plug element 80b consists of two pin-shaped connecting elements 86b, 86b' connected to each other via a connecting tab 84b. The plug element 80b fluidly seals the two heating fixing openings 46b, 46b' at the coupling base 40b. The fluid coupling element 18a does not have a hook element (see...). Figure 5 The two connecting elements 86b and 86b' each have adhesive through openings 82b and 82b', and the heating pipes 20b and 20b' are fluidly and sealingly bonded in the adhesive through openings.

[0057] Heating pipe 20b is located at the end of the coupling element 18b away from the fluid of the two fluid pipes 16b, 16b', particularly at the vehicle end 36b (see...). Figure 1 It extends through one of the two fluid lines 16b, 16b' to the plug element 80b of the fluid coupling element 18b—where the heating line 20b adheres to the plug element—and extends through the other of the two fluid lines 16b, 16b' back to the end of the fluid coupling element 18b away from the fluid, particularly the vehicle end 36b.

[0058] The heating line 20b extends from the electrical and fluid connection element 56b through one of the two fluid lines 16b, 16b' to the plug element 80b and through the other of the two fluid lines 16b, 16b' back to the electrical and fluid connection element 56b.

[0059] Heating line 20b extends from electrical and fluid connection element 56b through one of two fluid lines 16b, 16b' to plug element 80b, through plug element 80b, and through the other of the two fluid lines 16b, 16b' back to electrical and fluid connection element 56b.

[0060] The heating line 20b extends through one of the two fluid lines 16b, 16b' toward the fluid coupling element 18b, particularly from the vehicle end 36b, and correspondingly extends back to the vehicle end 36b through the other of the two fluid lines 16b, 16b', particularly from the fluid coupling element 18b.

[0061] Heating conduit 20b is bonded to at least one plug element 80b. Heating conduit 20b is fluidly and sealingly bonded to at least one plug element 80b at two different locations. Heating conduit 20b is fluidly and sealingly bonded to at least one plug element 80b at two heating fixing openings 46b, 46b'. Heating conduit 20b is fluidly and sealingly bonded to at least one plug element 80b at two connecting elements 86b, 86b' (see...). Figure 5 Heating line 20b turns away from fluid coupling element 18b. Heating line 20b extends once through each of the two fluid lines 16b, 16b'.

Claims

1. A wiper arm device, the wiper arm device having At least one wiper arm adapter (12a; 12b); At least one fluid coupling element (18a; 18b) for fluid connection with at least one wiper blade (62a; 62b); At least one wiper arm (14a; 14b); At least one fluid conduit (16a, 16a'; 16b, 16b') for transporting wiper fluid along the wiper arm (14a; 14b) to the fluid coupling element (18a; 18b); and Electrical heating lines (20a, 20a'; 20b) are arranged in the at least one fluid line (16a, 16a'; 16b, 16b') for heating the fluid line (16a, 16a'; 16b, 16b'). Its features are, At least one electrical heating conduit (20a, 20a'; 20b) extends through the at least one fluid conduit (16a, 16a'; 16b, 16b') and turns at the fluid coupling element (18a; 18b) to return through the at least one fluid conduit (16a, 16a'; 16b, 16b'). The wiper arm device includes electrically heated wiper blade lines (52a; 52b), which extend along the wiper arm (14a; 14b) outside of at least one fluid line (16a, 16a'; 16b, 16b') to supply electrical power to the wiper blades (62a; 62b), and the electrically heated wiper blade lines (52a; 52b) are configured as separate lines relative to the fluid lines (16a, 16a'; 16b, 16b') and relative to the electrically heated lines (20a, 20a'; 20b). The wiper arm device includes at least one electrical and fluid connection element (56a; 56b), wherein the at least one electrical heating line (20a, 20a'; 20b) can be connected to an electrical supply line via the electrical and fluid connection element, and the at least one fluid line (16a, 16a'; 16b, 16b') can be connected to a fluid supply line via the electrical and fluid connection element. The electrical connection direction of the electrical and fluid connection elements (56a; 56b) is oriented at least substantially perpendicular to the fluid connection direction of the electrical and fluid connection elements (56a; 56b), and each electrical and fluid connection element (56a; 56b) has at least one sealing element (74a; 74b) that separates the electrical connection area (76a; 76b) of the electrical and fluid connection elements (56a; 56b) from the fluid connection area (78a; 78b) of the electrical and fluid connection elements (56a; 56b). The wiper arm device has at least one additional electrical connection element (54a; 54b), the at least one electrical wiper blade heating line (52a; 52b) being able to be connected to the electrical supply line via the additional electrical connection element, and the additional electrical connection element being constructed differently from the electrical and fluid connection element (56a; 56b).

2. The wiper arm device according to claim 1, characterized in that, The at least one electrical heating conduit (20a, 20a'; 20b) has a maximum longitudinal extension within the fluid conduit (16a, 16a'; 16b, 16b'), the maximum longitudinal extension being at least 10% greater than the maximum longitudinal extension of the at least one fluid conduit (16a, 16a'; 16b, 16b').

3. The wiper arm device according to claim 1 or 2, characterized in that, The at least one fluid coupling element (18a) has at least one hook element (50a), and the at least one electrical heating conduit (20a, 20a') is suspended at the hook element.

4. The wiper arm device according to claim 3, characterized in that, The at least one electrical heating line (20a, 20a') is deflected at the hook element (50a).

5. The wiper arm device according to claim 3, characterized in that, The at least one electrical heating pipe (20a, 20a') is suspended at the hook element (50a) in the middle region of the electrical heating pipe (20a, 20a').

6. The wiper arm device according to claim 5, characterized in that, The at least one electrical heating line (20a, 20a') is turned at the hook element (50a) in the middle region of the electrical heating line (20a, 20a').

7. The wiper arm device according to claim 3, characterized in that, The at least one electrical heating conduit (20a, 20a') extends from the electrical and fluid coupling element (56a) to the at least one hook element (50a) via the at least one fluid conduit (16a, 16a') and extends back to the electrical and fluid coupling element (56a).

8. A wiper device comprising wiper blades (62a; 62b) and wiper arm device (10a; 10b) according to any one of claims 1 to 7.

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