Wiper arm adapter, especially for a motor vehicle, wiper arm and wiper device

Abstract

A wiper arm adapter (5) for a wiper arm (2), which is used in particular for a motor vehicle (4), wherein the wiper arm adapter (5) has a base body (6) wherein a bearing element (15) is provided on the base body (6) on which a wiper blade (3) can be stored, and wherein the wiper arm adapter (5) has a retaining piece (7) on which a hydraulic and / or pneumatic connecting piece (8) can be attached. It is proposed that the base body (8) has a first side wall (16) that at least one recess (18) is provided on the first side wall (16) and that at least one first locking element (23) is provided on the retaining piece (7) which engages in the recess (18) of the first side wall (16) to connect the retaining piece (7) to the base body (6). A wiper arm (2) and a wiping device (1) are also specified.

Description

State of the art

[0001] The invention relates to a wiper arm adapter, which is particularly suitable for a motor vehicle, as well as a wiper arm and a wiping device with such a wiper arm adapter. Specifically, the invention relates to the field of wiping devices, in particular windshield wiper systems, for passenger cars and / or trucks.

[0002] From DE 10 2019 217 192 A1, a windshield wiper, particularly suitable for the windshield of a motor vehicle, is known. This wiper comprises a wiper arm, a wiper blade, and a fluid reservoir. In this context, a wiper blade adapter device is known, comprising a fluid channel for conveying a fluid and a connection unit for a fluid-technical connection between the fluid channel and a wiper arm. Disclosure of the invention

[0003] The wiper arm adapter according to the invention, with the features of the main claim, has the advantage of enabling improved design and functionality. In particular, it allows for better fluid flow, reliable mechanical cohesion of the components, reduced play in the assembled state, and / or simplified assembly. Corresponding advantages can be achieved for the wiper arm according to claim 9 and the wiper device according to claim 10.

[0004] The measures listed in the dependent claims result in further advantageous developments and improvements of the features specified in the main claim.

[0005] It is advantageous that the base body has a second side wall, that the first and second side walls are opposite each other, that at least one recess is provided on the second side wall, and that at least one second locking element is provided on the retaining piece, which engages in the recess of the second side wall to connect the retaining piece to the base body. The retaining piece can be reliably fastened between the two side walls.

[0006] Vorteilhaft ist es, dass zumindest eine Ausnehmung als Durchgangsöffnung ausgestaltet ist. Hierdurch kann ein zuverlässiges Eingreifen in die jeweilige Ausnehmung erfolgen. Ein unerwünschtes Lösen der Verbindung kann zuverlässig vermieden werden.

[0007] It is advantageous that at least one recess is designed as an approximately rectangular recess and / or that at least one locking element has a locking lug that engages in the corresponding recess to connect the retaining piece to the base body. This ensures reliable engagement of the locking lug in the assembled state. Furthermore, play in the fastening can be avoided.

[0008] It is advantageous that at least one locking element is essentially pin-shaped and / or that the locking element extends at least approximately parallel to the associated side wall when the retaining piece is connected to the base body. This geometric design allows for a positive influence on the flexibility of the locking element. Additionally, it enables a compact design.

[0009] It is advantageous that the retaining piece is made primarily of at least one type of plastic and / or that at least one locking element is formed on the retaining piece. This allows for a favorable design.

[0010] It is advantageous if the base body is made primarily of a material with higher mechanical strength compared to the material of the mounting piece and / or a metallic material. This allows for high load-bearing capacity. If necessary, an advantageous combination of materials can be used to achieve high stability and / or reduced weight and / or reduced material and manufacturing costs.

[0011] It is advantageous that the retaining piece has at least one recess into which, when assembled, at least one projection formed on the connecting piece engages. This allows for a secure connection between the connecting piece and the retaining piece.

[0012] Depending on the design, one or more of the following features and advantages may be realized.

[0013] A holder for a hydraulic (or pneumatic) connector with special mounting features, preferably with two lateral mounting interfaces, can be created. These mounting interfaces allow the holder to be attached to the base body.

[0014] Advantageously, a fluid guide, which can be hydraulic and / or pneumatic, can be reliably held in its desired position. This is particularly possible via the retaining piece.

[0015] This prevents unwanted loosening of connections. In particular, it prevents components of the wiper arm from detaching from their predetermined positions.

[0016] Specifically, locking elements, which may feature locking lugs, allow for advantageous engagement in opposing recesses in opposing side walls of the base body. This effectively prevents unwanted loosening, even in the case of vibrations or other influences occurring during travel.

[0017] The locking elements, in particular locking lugs, remain reliably in place, preferably without any possibility of them moving out of the recesses in an undesirable manner. This prevents unwanted loosening of the connections. In particular, the retaining piece remains reliably attached to the base body.

[0018] Specifically, the base body can be formed in one piece. Additionally or alternatively, the retaining piece can also be formed in one piece.

[0019] When the mounting piece is attached to the base, a clicking sound can be produced, providing the installer with acoustic feedback. This ensures that the components are correctly connected.

[0020] Specifically, the wiper arm adapter can be used for a wiper arm that allows wiper fluid to be sprayed from a wiper blade onto a windshield or similar surface. Additionally or alternatively, a blast of air can also be directed from a wiper blade onto a windshield. Brief description of the drawings

[0021] Preferred embodiments of the invention are explained in more detail in the following description with reference to the accompanying drawings, in which corresponding elements are provided with matching reference numerals. The drawings show: Fig. 1. A wiping device with a wiper arm for a motor vehicle in an excerpted, schematic representation; Fig. 2 a wiper arm adapter for the in Fig. 1. Wiper arm of the wiping device shown in a schematic, spatial representation, wherein a base body, a holding piece and a connecting piece are shown; Fig. 3 that in Fig. 2 shown holding piece in a schematic, spatial representation; Fig. 4 den in Fig. 2 basic bodies shown in a schematic, spatial representation; Fig. 5 that in Fig. 2 shown holding piece and base body, with an assembly illustrated; Fig. 6 the retaining piece and the base body in the assembled state and Fig. 7 that in Fig. 6 Detail labelled VII to illustrate the mechanical connection between the retaining piece and the base body. Embodiments of the invention

[0022] Fig. Figure 1 shows a wiper device 1 with a wiper arm 2 and a wiper blade 3 for a motor vehicle 4 in an abridged, schematic representation. For the sake of simplicity, only a disc edge 4' of a disc 4" of the motor vehicle 4 is shown schematically. The motor vehicle 4 can be, in particular, a passenger car or a truck. The wiper arm adapter 1 is especially suitable for such motor vehicles 4.

[0023] Fig. Figure 2 shows a wiper arm adapter 5 for the in Fig. Figure 1 shows a schematic, three-dimensional representation of the wiper arm 2 of the wiper device 1. The wiper arm adapter 5 has a base body 6. The wiper arm adapter 5 also has a retaining piece 7 to which a hydraulic and / or pneumatic connecting piece 8 is attached.

[0024] The hydraulic and / or pneumatic connecting piece 8 has at least one hydraulic and / or pneumatic interface 10.

[0025] The connecting piece 8 is connected to a fluid line 11 on the wiper arm side. Fluid can be supplied to the connecting piece 8 via the fluid line 11 on the wiper arm side. In particular, an aqueous cleaning fluid or wiper solution can be used as the fluid.

[0026] Furthermore, a wiper blade-side fluid guide 12 is provided, which is connected to the wiper arm-side fluid line 11 at least by means of the connecting piece 8 of the wiper arm 2. At least one interface 10 allows for at least one hydraulic and / or pneumatic connection from the connecting piece 8 of the wiper arm 2 to the wiper blade 3.

[0027] On the base body 6, a bearing element 15, designed in this embodiment as a bearing pin 15, is provided, on which the wiper blade 3 is rotatably mounted.

[0028] The design of the wiping device 1, the wiping arm 2 and the wiping arm adapter 5 is described below also with reference to the Fig. 3 to 7 are described further.

[0029] Fig. 3 shows this in Fig. 2. Holding piece 7 shown in a schematic, spatial representation. Fig. 4 shows the one in Fig. 2 basic bodies 6 shown in a schematic, spatial representation. Fig. 5 shows this in Fig. 2 shown holding piece 7 and base body 6, with an assembly illustrated. Fig. Figure 6 shows the retaining piece 7 and the base body 6 in the assembled state. Fig. 7 shows that in Fig. Detail 6, designated VII, illustrates the mechanical connection between the retaining piece 7 and the base body 6.

[0030] The basic body 8 has a first side wall 16 and a second side wall 17. A recess 18 is provided in the first side wall 16. A recess 19 is provided in the second side wall 18.

[0031] In this embodiment, the recesses 18, 19 are designed as through-openings 18, 19. This allows the recesses 18, 19 to be manufactured advantageously.

[0032] The first side wall 16 and the second side wall 17 are opposite each other. The recess 18 of the first side wall 16 and the recess 19 of the second side wall 17 are also opposite each other.

[0033] A first locking element 23 is provided on the retaining piece 7. In this embodiment, the first locking element 23 engages in the recess 18 of the first side wall 16 to connect the retaining piece 7 to the base body 6. Furthermore, a second locking element 24 is provided on the retaining piece 7, which engages in the recess 19 of the second side wall 17 to connect the retaining piece 7 to the base body 6. This is particularly advantageous in Fig. Figure 5 illustrates the insertion of the retaining piece 7 into the base body 6, where an arrow 25 illustrates the insertion of the retaining piece 7 into the base body 6.

[0034] Since the recesses 18, 19 in this embodiment are designed as through openings 18, 19, a reliable interaction with the locking elements 23, 24 is achieved. This enables a high load-bearing capacity of the connections.

[0035] The locking elements 23, 24 can have locking lugs 29, 30 that engage in the corresponding recesses 18, 19 to connect the retaining piece 7 to the base body 6. This enables reliable assembly. Additionally, a particularly strong connection can be achieved. In particular, the locking lugs 29, 30 can engage through the recesses 18, 19, which in this embodiment are designed as through-openings 18, 19, and, if necessary, extend through them. This is particularly advantageous in Fig. 7 illustrates.

[0036] In this embodiment, the recesses 18, 19 are designed as rectangular recesses 18, 19. The locking lugs 29, 30 are preferably designed with rectangular geometries adapted to them in the front view.

[0037] The locking elements 23, 24 are preferably pin-shaped. The locking elements 23, 24 preferably extend parallel to the associated side wall 16, 17 when the retaining piece 7 is connected to the base body 6. The assembled state is particularly evident in Fig. 6 illustrates.

[0038] The retaining piece 7 can be made of plastic. The locking elements 23, 24 can be formed on the retaining piece 7. In particular, the locking elements 23, 24 can also be made of plastic.

[0039] The base body 6 can be made of a material with a higher mechanical strength compared to the material of the retaining piece 7. In particular, the base body 6 can be made of a metallic material.

[0040] The retaining piece 7 has recesses 33, 34 ( Fig. 3) on. In the assembled state, the connecting piece has 8 formed projections 35, 36 ( Fig. 2) into the recesses 33, 34 of the retaining piece 7.

[0041] The invention is not limited to the described embodiments. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2019 217 192 A1

[0002]

Claims

[1] Wiper arm adapter (5) for a wiper arm (2), which is used in particular for a motor vehicle (4), wherein the wiper arm adapter (5) has a base body (6), wherein a bearing element (15) is provided on the base body (6) on which a wiper blade (3) can be stored, and wherein the wiper arm adapter (5) has a retaining piece (7) on which a hydraulic and / or pneumatic connecting piece (8) can be attached, characterized by , that the base body (8) has a first side wall (16), that at least one recess (18) is provided on the first side wall (16) and that at least one first locking element (23) is provided on the retaining piece (7) which engages in the recess (18) of the first side wall (16) to connect the retaining piece (7) to the base body (6). [2] Wiper arm adapter according to claim 1, characterized by, that the base body (6) has a second side wall (17), that the first side wall (16) and the second side wall (18) are opposite each other, that at least one recess (19) is provided on the second side wall (18) and that at least one second locking element (24) is provided on the retaining piece (7) which engages in the recess (19) of the second side wall (17) to connect the retaining piece (7) to the base body (6). [3] Wiper arm adapter according to claim 1 or 2, characterized by , that at least one recess (18, 19) is designed as a passage opening (18, 19). [4] Wiper arm adapter according to any one of claims 1 to 3, characterized by , that at least one recess (18, 19) is designed as at least approximately rectangular recess (18, 19) and / or that at least one locking element (23, 24) has a locking lug (29, 30) which engages in the associated recess (18, 19) to connect the retaining piece (7) to the base body (6). [5] Wiper arm adapter according to any one of claims 1 to 4, characterized by , that at least one locking element (23, 24) is at least substantially pin-shaped and / or that the locking element (23, 24) extends at least approximately parallel to the associated side wall (16, 17) when the retaining piece (7) is connected to the base body (6). [6] Wiper arm adapter according to any one of claims 1 to 5, characterized by , that the retaining piece (7) is formed at least substantially from at least one plastic and / or that at least one locking element (23, 24) is formed on the retaining piece (7). [7] Wiper arm adapter according to any one of claims 1 to 6, characterized by , that the base body (6) is formed at least substantially from a material that is mechanically more resilient than the material of the retaining piece (7) and / or from a metallic material. [8] Wiper arm adapter according to any one of claims 1 to 7, characterized by , that the retaining piece (7) has at least one recess (33, 34) into which, in the assembled state, at least one projection (35, 36) formed on the connecting piece (8) engages. [9] Wiper arm (2), in particular for a motor vehicle (4), with a wiper arm adapter (5) according to one of claims 1 to 8, wherein a hydraulic and / or pneumatic connecting piece (8) is attached to the retaining piece (7) and wherein the connecting piece (8) is connected to at least one wiper arm-side fluid line (11) through which at least one fluid can be supplied to the connecting piece (8). [10] Wiping device (1) with at least one wiper arm (2) according to claim 9 and at least one wiper blade (3) attached to the wiper arm (2), wherein the wiper blade (3) is mounted on the bearing element (15) and wherein at least one wiper blade-side fluid guide (12) is provided which is connected to the wiper arm-side fluid line (11) at least by means of the connecting piece (8) of the wiper arm (2).

Images