Seat waist support and manufacturing method thereof

Abstract

The invention discloses a seat waist support and a manufacturing method thereof and belongs to the field of automobile seats. The seat waist support comprises a metal wire and plastic coating the metal wire, discharge lines are arranged on the surface of the metal wire at the joint of the metal wire and the plastic, and the discharge lines are used for enabling the plastic on the metal wire to rotate under the action of small torque and not to move under the action of certain axial force. The method for manufacturing the seat waist support comprises the following steps of: performing bending deformation processing on a metal wire raw material; putting the metal wire into an embossing mold, and embossing the discharge lines; and finally, injection molding a plastic block at the peripheriesof the discharge lines. After the discharge lines are machined on the surface of the metal wire, on the premise that the axial friction force between the metal wire and the plastic block is large enough, the plastic block can rotate under the action of small radial torque force, and therefore the percent of pass of the seat waist support manufactured through the seat waist support manufacturing method is greatly increased.

Description

technical field [0001] The invention relates to the field of car seats, in particular to a seat lumbar support and a manufacturing method thereof. Background technique [0002] With the continuous advancement of technology, cars have entered thousands of families, and the quality of the seats on the car is also an important indicator for evaluating the quality of a car. In order to improve the quality of the seats, a car seat waist is designed. This kind of lumbar support is mainly composed of a wire frame and a plastic block set on the wire frame, and in order to improve the quality of the seat lumbar support, the seat lumbar support requires the plastic block on the top of the lumbar support after the manufacture is completed. For mechanical performance testing, it is required that the torque of the plastic block connected to the wire is below 50N*m to realize the rotation of the plastic block on the wire, and the axial force of the rotatable plastic block within 300N must...

AI Technical Summary

Problems solved by technology

It is difficult to meet the above two conditions at the same time when processing by traditional processing methods, and the pass rate of processing is low

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