Car rear bar bracket bad how to change.
The core steps of replacing a rear bumper bracket include removing the old bracket, installing the new bracket, and restoring the vehicle.
First, the steps to remove the old bracket are as follows:
Remove the taillight: First take apart the interior in the trunk, then remove the buckle of the rear taillight and gently tap the taillight to remove it.
Remove the bumper: the bumper has a row of screws under the rear of the rear wheel, and there is also a string of screw bayonet under the right rear, remove them all, and then pry open the buckle, the rear bumper can be removed.
Remove the old support: Remove each screw, and then pull out the buckle, you can remove the old support.
Next, the steps to install the new bracket are as follows:
Install the new support: set the position, clamp the buckle, tighten the 6 fixing screws, you can fix the new support.
Restore the vehicle: in the reverse order of removal, install the rear bumper, screw on the fixing screws, after the bumper is installed, install the taillight back to the original position, fix the buckle on the card, and straighten the lining of the trunk.
Through the above steps, you can complete the replacement of the rear bar support.
The bumper bracket is the link between the bumper and the body parts. When designing the bracket, it is first necessary to pay attention to the strength problem, including the strength of the bracket itself and the strength of the structure connected with the bumper or the body. For the support itself, the structural design can meet the strength requirements of the support by increasing the main wall thickness or selecting PP-GF30 and POM materials with higher strength. In addition, reinforcing bars are added to the mounting surface of the bracket to prevent cracking when the bracket is tightened. For the connection structure, it is necessary to rationally arrange the cantilever length, thickness and spacing of the bumper skin connection buckle to make the connection stable and reliable.
Of course, while ensuring the strength of the bracket, it is also necessary to meet the lightweight requirements of the bracket. For the side brackets of the front and rear bumpers, try to design a "back" shaped box structure, which can effectively reduce the weight of the bracket while meeting the strength requirements of the bracket, thus saving costs. At the same time, on the path of rain invasion, such as on the sink or installation table of the support, it is also necessary to consider adding a new water leakage hole to prevent local water accumulation.
In addition, in the design process of the bracket, it is also necessary to consider the clearance requirements between it and the peripheral parts. For example, in the central position of the middle bracket of the front bumper, in order to avoid the engine cover lock and engine cover lock bracket and other parts, the bracket needs to be partially cut out, and the area should also be checked through the hand space. For example, the large bracket on the side of the rear bumper usually overlaps with the position of the pressure relief valve and the rear detection radar, and the bracket needs to be cut and avoided according to the envelope of the peripheral parts, the wiring harness assembly and the direction.
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