Assembly screw for automobile exhaust pipe

• Main Authors: LIN XIAOFENG, CHEN SENYONG, WU JINWANG, WU YIYANG
• Format: Patent
• Language: Chinese; English
• Published: 10.01.2023
• Subjects: BLASTING; DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

The assembly screw for the automobile exhaust pipe comprises a screw rod and a screw head fixedly connected to the end portion of the screw rod, the screw head is sleeved with a protective cap in a rotating mode, a round hole is formed in the end, away from the screw head, of the protective cap, and a plurality of sealing gaskets are fixedly connected to the inner wall of the round hole. Waste gas corrosion of a tail gas pipe can be effectively prevented through the anti-corrosion coating on the outer surface of the screw rod, meanwhile, the screw rod is prevented from being rusted after being used for a long time through the arrangement of the inner anti-rust layer, and the screw head is wrapped and protected through the protective cap and prevented from being corroded and damaged. 本实用新型公开了一种汽车尾气管用装配螺丝，包括螺杆和固定连接在螺杆端部的螺丝头，螺丝头外转动套设有防护帽，防护帽远离螺丝头的一端开设有圆孔，圆孔的内壁固定连接有若干密封垫。通过螺杆外表面的防腐蚀涂层可以有效防止尾气管的废气腐蚀，同时内部的防锈层设置，避免螺杆长时间使用发生锈蚀，通过防护帽对螺丝头进行包裹防护，避免螺丝头发生腐蚀损坏。