Seat headrest rod and manufacturing process thereof

Abstract

The invention provides a seat headrest rod and a manufacturing process thereof and relates to the seat headrest rod with a positioning opening slot and the manufacturing process thereof. The invention aims to provide a safe and reliable seat headrest rod and a seat headrest rod manufacturing process with high processing quality and high production efficiency. The seat headrest rod comprises a cross bar and two upright rods, wherein the two upright rods are respectively fixedly connected to the two ends of the cross bar; the upright rods are hollow tubes; a plurality of opening slots are formed on at least one of the upright rods along longitudinal direction; the opening slots are composed of upper side walls, slot bottoms and lower side walls; the external ends of the upper side walls arevertically connected to the tube walls of the upright rods; the upper ends of the slot bottoms are vertically connected to the internal ends of the upper side walls; the internal ends of the lower side walls are fixedly connected to the lower ends of the slot bottoms; the external ends of the lower side walls are fixedly connected to the tube walls of the upright rods; the lower side walls are inclined downward from inner to outer; and the thicknesses of the upper side walls, the slot bottoms and the lower side walls are almost as same as the thicknesses of the tube walls of the upright rods.

Description

technical field [0001] The invention relates to a detachable head support of a seat, in particular to a seat headrest rod with a positioning opening slot and a production process thereof. Background technique [0002] Such as figure 1 As shown, today's car seats all include a seat cushion 1, a backrest 2 and a headrest 3, and the headrest 3 is installed on the top of the backrest 2 through its internal headrest rod 4, in order to make passengers of different heights comfortable Leaning the head on the headrest 3, usually the headrest rod 4 is designed as a height-adjustable type, and a number of open grooves 6 are longitudinally processed on the vertical rod 5 of the headrest rod 4, combined with figure 2 As shown, a ferrule 7 is installed on the backrest 2 , and the headrest rod 4 can be limited to different heights by utilizing the cooperation of the bayonet pin 8 in the ferrule 7 and the opening groove 6 . At present, the opening groove 6 on the headrest rod 4 is mainl...

AI Technical Summary

Problems solved by technology

At present, the opening groove 6 on the headrest rod 4 is mainly processed by cutting to remove excess material on the rod, so as to obtain Figure 3a and Figure 3b In the opening groove of the headrest rod shown, the wall thickness of the opening groove 6 is obviously reduced, so that the strength of the headrest rod 4 is obviously reduced, and the headrest 3 is an important part for protecting the passenger's head in the car, and the strength of the headrest rod 4 is higher than that of the headrest rod 4. It also poses a great safety hazard to passengers

At the same time, the surface quality of the cut open groove is low and the roughness is high, and the open groove must be polished before electroplating, which also reduces the production efficiency

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