Patent name: manufacturing method of connecting device of automobile steering wheel on steering shaft, technical field: the invention relates to connecting device of automobile steering wheel on steering shaft, including hinged rotating shaft/hub connecting mechanism between steering wheel hub and one end of steering shaft connected with steering wheel, and also including fastening component, which forms reliable locking connection between hub and steering shaft and works along the longitudinal axis direction of steering shaft.
Generally, the connecting device needs to meet the following requirements. Because the accidental loosening of this connection will lead to serious consequences, this connection must connect the steering wheel to the steering shaft safely and reliably. In addition, the connection must be detachable so that the steering wheel can be replaced. Finally, it must be possible to adjust the angular positioning of the steering wheel relative to the steering shaft.
In the general method of connecting steering wheel and steering shaft, spline shaft connection is usually used to form articulated rotating shaft/hub connection. By assembling the hub to the steering shaft with external splines, the articulated rotation connection between the steering wheel and the steering shaft can be realized, and the angular positioning between them can be adjusted. In order to fix the hub on the steering shaft along the axial direction of the steering shaft, a nut is screwed on the screw at the designated end of the steering shaft from the inner side of the hub, and the nut fixes the hub on the steering shaft. In this way, the steering wheel can be safely and reliably assembled on the steering shaft.
With the enhancement of safety awareness in recent years, airbag cushion system is used more and more, which is located on the driver's side of the steering wheel hub. In order to facilitate effective assembly, the airbag cushion system should be assembled on the steering wheel before being provided to the vehicle manufacturer. However, because the airbag cushion system is installed inside the steering wheel hub, it is difficult or even impossible to get close to the fastening parts located inside the hub.
Therefore, it is an object of the present invention to provide a connecting device mentioned at the beginning of the present invention, in which a steering wheel can be connected to a steering shaft from the outside of a hub.
Therefore, according to the first embodiment of the present invention, the connecting device mentioned at the beginning of the present invention is characterized in that the fastening component is a bolt, the screw of the bolt is screwed into a threaded hole on a steering shaft, the end of the bolt is installed in a hub so that the bolt can rotate but is axially held, the outer peripheral surface of the bolt is provided with teeth, and an engaging member is rotatably installed on the hub, and the engaging member engages with the teeth of the bolt and contains a fastening tool. The second embodiment of the present invention is characterized in that the fastening part is a nut which is installed in the hub and can rotate but is axially held, the internal thread of the nut is engaged with one end of the steering shaft, the outer peripheral surface of the nut is provided with teeth, the engaging part is rotatably installed on the hub, the engaging part is engaged with the teeth of the nut, and has an engaging structure matched with a fastening tool, and the fastening tool can be approached from the outside of the hub. In this way, by inserting a suitable tool into the fastening groove, the fastening part can be easily tightened from the rear side of the steering wheel without entering the hub.
The invention will be described below with reference to the attached drawings.
(Photo/Text/Photo: Pacific Auto Network Q&A called Beast)