Wiper motor and method for the production thereof
The invention relates to a wiper motor having a housing element connected to an electrical line that has an elastically deformable spring element in an end region projecting out of the housing element, wherein the spring element, in order to form an electrically conductive connection with a counterpart element on the housing element, is movable, with respect to a first, relaxed position of the spring element, into a second, elastically deformed position generating a contact force on the counterpart element.
1. Wiper motor having a housing element connected to an electrical line that has an elastically deformable spring element in an end region projecting out of the housing element, wherein the spring element, in order to form an electrically conductive connection with a counterpart element on the housing element, is movable, with respect to a first, relaxed position of the spring element, into a second, elastically deformed position generating a contact force on the counterpart element,
characterized
in that a blocking element is provided on the housing element, which holds the spring element in a third, elastically deformed position in which the deformation of the spring element is less than in the second position of the spring element.
2. Wiper motor according to claim 1 ,
characterized
in that a contact portion of the spring element in the first position is at a distance from a cover bottom that is greater than a distance of the contact portion of the spring element in the third position, and in that a distance of the contact portion of the spring element in the second position from the cover bottom is less than the distance in the third position of the contact portion of the spring element.
3. Wiper motor according to claim 1 ,
characterized
in that the spring element in the second position and in the third position is arranged regionally in a receptacle of the housing element.
4. Wiper motor according to claim 3 ,
characterized
in that the receptacle has protective walls, which are arranged at a small distance from the spring element, and in that the protective walls are connected integrally to the element.
5. Wiper motor according to claim 4 ,
characterized
in that the spring element projects regionally beyond an end side of the protective walls in the three positions.
6. Wiper motor according to claim 1 ,
characterized
in that the housing element consists of plastic and is in the form of an injection-moulded part, and in that the electrical line is encapsulated regionally with the material of the housing element.
7. Wiper motor according to claim 1 ,
characterized
in that the blocking element is connected to the housing element by means of a force- and/or form-fitting connection.
8. Wiper motor according to claim 7 ,
characterized
in that the blocking element consists of a harder material than the housing element, in particular of steel, and in that the blocking element has barb-like protrusions that plastically deform the material of the housing element in the installed position of the blocking element in the housing element.
9. Wiper motor according to claim 8 ,
characterized
in that the blocking element is formed in a plate-like manner and is guided in a linearly movable manner in groove-like slots in the housing element.
10. Wiper motor according to claim 9 ,
characterized
in that the blocking element has at least one portion for limiting the movement of the blocking element in the slots of the housing element in an introduction direction.
11. Wiper motor according to claim 1 ,
characterized
in that the housing element is a gearbox cover, which closes a gearbox housing of the wiper motor, and in that the counterpart element cooperating with the spring element is arranged in the region of a gearwheel.
12. Wiper motor according to claim 1 ,
characterized
in that a gap is formed between the spring element and the blocking element in the second position of the spring element.
13. Method for producing a wiper motor configured according to claim 1 , comprising at least the following steps:
producing the housing element with the electrical line fastened thereto,
fastening the blocking element to the housing element, wherein the spring element is moved from the first position into the third position,
assembling the housing element on the wiper motor, wherein a counterpart element cooperating with a contact portion of the spring element moves the spring element from the third position into the second position.