A seat lumbar support and method of making the same

Abstract

The invention discloses a seat lumbar support and a manufacturing method thereof, which belong to the field of automobile seats. The seat lumbar support includes metal wires and plastics coated on the metal wires, and the metal wires at the joints of the metal wires and the plastics are arranged on the surface of the metal wires. There are discharge lines, and the discharge lines are used to make the plastic on the wire rotate under the action of a small torque and not move under the action of a certain amount of axial force. The method of manufacturing the seat lumbar support is as follows: first, the metal wire raw material is subjected to bending and deformation processing; then the above-mentioned metal wire is put into an embossing mold to emboss the discharge pattern; finally, a plastic block is injected around the discharge pattern. After processing the discharge lines on the surface of the metal wire, on the premise of ensuring that the axial friction between the metal wire and the plastic block is sufficiently large, the plastic block can be rotated under the action of a relatively small axial torque, so that the use of The qualification rate of the seat lumbar support made by the invention is greatly improved.

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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