Process for producing a multi-component wiper arm
一种雨刷器、雨刷片的技术，应用在车辆的清洗、车辆保养、运输和包装等方向，能够解决成本高、单个元件相互松开、雨刷器臂耗费时间等问题
Inactive Publication Date: 2011-05-11
ROBERT BOSCH GMBH
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- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] However, this manufacturing and mounting of the wiper arm is very time-consuming and costly due to the additional operating time as well as the additional assembly due to the nearby required injection molding machine
Since the individual components have to engage one another during assembly, there is also the risk that the individual elements will undesirably loosen one another during operation of the wiper arm
Method used
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Embodiment Construction
[0027] figure 1 An exploded view of a wiper arm 1 according to the invention is shown, which has an upper arm section 2 and a lower arm section 3 , which are movably connected to each other via a joint pin 4 . On the lower arm section 3 , two wiper arm receiving parts 5 are movably connected to the lower arm section 3 via hinge pins 6 respectively. At its free end, the upper arm section 2 has a bracket 7 in order to be able to detachably fasten the wiper arm 1 to a likewise not shown wiper drive of a not shown windshield wiper system. Before installing the wiper arm 1 on the windshield wiper device, it is only necessary to insert the wiper blade into the holder 8 provided for this purpose on the wiper blade holder 5 .
[0028] According to the invention, the assembled two-component wiper arm 1 can be produced completely in one injection molding cycle. Therefore, it is not necessary to manufacture the individual elements in different injection molds on separate injection mold...
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The present invention relates to a process for producing a wiper arm for a window wiper device for a motor vehicle, with an upper arm portion, on which a mount is provided, in order to fix the wiper arm detachably to a wiper drive of the window wiper device, and a lower arm portion, which is pivotably connected to the upper arm portion, as well as at least one wiper blade holder which is pivotably connected to the lower arm portion, characterized by producing the wiper arm in a multi-component injection-molding process in which, in a first process step, the upper arm portion is injection-molded along with at least one first pivot pin formed on it by means of a first material component in a partial portion of a cavity, in a second process step the lower arm portion, pivotably connected to the upper arm portion, is injection-molded along with at least one second pivot pin formed on it by means of a second material component in a second partial portion of the cavity by encapsulation of the first pivot pin, and in a further process step at least one wiper blade holder is injection-molded by means of a third material component in a further partial portion of the cavity by encapsulation of the second pivot pin.
Description
technical field [0001] The invention relates to a method for the manufacture of a multi-component wiper arm for a window wiper device of a motor vehicle, the wiper arm comprising an upper arm section on which is provided a bracket for use in The wiper arm is releasably fastened to the wiper drive unit of the vehicle window wiper device, and also includes a lower arm section, which is hingedly connected to the upper arm section, and at least one wiper blade holder, which is hingedly connected to the lower arm section segment connected. Furthermore, the invention relates to a wiper arm which is produced by means of multi-component assembly injection molding. Background technique [0002] It is already known to produce the connection of the wiper arm and its components separately by injection molding and to connect them to one another in a subsequent working step. In the prior art, the various components of the wiper arm are generally first produced in separate injection mold...
Claims
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IPC IPC(8): B60S1/32B60S1/34
CPCB60S1/34B60S1/3801B60S1/4064B60S2001/3898
Inventor M·克鲁泽S·盖泽
Owner ROBERT BOSCH GMBH