The present invention relates to the field of flow guiders or spoilers for wipers and wiper assemblies, and in particular to a flow guider for a wiper and a wiper assembly which are provided with good performances on stability and disassembly to assist the wiper spring rail to be connected firmly to the wiper.
Automobiles are currently universal transport used by the public, especially when it is windy and rainy. In addition to act as a replacer of walk, automobiles have a better function of sheltering from wind and rain than bicycles or motorcycles. Automobiles will mostly use wiper to keep driving sight and ensure safety when running in the rain. Generally speaking, the wiper comprises a wiper rod, of which a connecting portion cooperates with an adapter so that a wiper arm is connected to the wiper rod. The wiper arm can be driven by a driving component so as to drive the wiper rod connected to the wiper arm, thus enabling the wiper to wipe the windshield. In other words, vehicle wiper device is typically mounted adjacent to vehicle windshield. The wiper rod of the wiper reciprocates in the range of the wiper of the windshield, whereas the wiper rod is used to remove depositions such as dust or water stains, for example, rain or snow pieces adhered to the windshield.
The end face of one end of a portion of existing wiper flow guiders has mostly open configuration. The above-mentioned open end of the flow guiders is used for receiving spring rail, whereas after the spring rail has been received in the flow guider from the above-mentioned open end of the flow guider, it needs to additionally use an end cap to be fixed to one end of the flow guider to enclose the end of the spring rail appropriately, thereby preventing the spring rail passing through the flow guider from the end of the open flow guider. However, such a configuration undoubtedly adds additional manufacturing process and material cost.
The other portion of existing wiper flow guiders are configured that the end face of one end of the flow guiders is close in order to improve manufacturing process and material cost problems caused by the additional use of end cap. However, such a flow guider merely close its end face and fails to enclose the end of the spring rail appropriately at the end. It is therefore unable to produce an effective fixing effect to the end of the spring rail. That is, two ends of the spring rail are still easy to break away from the fixing mechanism of the flow guider during using the wiper, resulting in two ends of the spring rail protruding out of the fixing mechanism of the flow guider and the wiper fails to work. In addition, such a wiper flow guider is further provided with a stop portion in the shape of a rectangle, and the end of the stop portion connected to the side surface of the flow guider is the end that has smaller width, thereby to cooperate with the spring rail having a groove in the shape of a trapezoid so as to prevent the displacement between the spring rail and the flow guider in the longitudinal direction. However, the stop portion with such a configuration is not easy to be embedded into the groove, and therefore causing difficulties in assembly. Furthermore, when the stop portion with such a configuration is embedded into the groove, the stop portion will produce a considerable distortion and therefore, the stop portion is prone to be damaged and unable to server the fixing function after repeated assemblies and disassemblies. Therefore, there should be more sophisticated needs for existing flow guiders in the respects of fixing the spring rail firmly and preventing the breakaway of the spring rail and facilitating the user's operation.