Universal wheel dismounting and mounting tool for swivel chair

Abstract

The invention discloses a universal wheel dismounting and mounting tool for a swivel chair. When a heavy hammer slides upwards until the heavy hammer contacts a retaining ring, the impact force generated by the heavy hammer causes a sliding rod to move upwards relative to a swing rod instantaneously, and thus a universal wheel dismounting mechanism is driven to dismount the universal wheel from aplug II of a plug rod; when the heavy hammer slides upward to contact with the retaining ring, the impact force generated by the heavy hammer causes the sliding rod to move up relative to the swing rod instantaneously, and thus the plug rod dismounting mechanism is driven to pull the plug II of the plug rod out of a mounting hole; after that, the plug rod dismounting mechanism is dismounted, and auniversal wheel pressing mounting mechanism is dismounted; the plug I end of the plug rod on a new universal wheel is inserted into a mounting hole of a corresponding wheel seat rod, and the universal wheel pressing mechanism is utilized to apply downward pressure to the universal wheel, so that the plug I is completely inserted into the mounting hole, and the mounting operation of the new universal wheel is realized. The whole process is convenient and reliable and does not cause human body damage, and meanwhile, the universal wheel is mounted through a pressing mode, so that the damage of plastic universal wheels can be effectively prevented.

Description

technical field [0001] The invention relates to the technical field of hardware tools, in particular to a tool for removing and installing universal wheels of swivel chairs. Background technique [0002] The swivel chair is a widely used computer chair and office chair. The lower end wheel seat of the swivel chair is generally provided with five wheel seat bars in a five-star shape, and universal wheels are installed below the outer end of each wheel seat bar. When the swivel chair moves, each universal wheel rotates relative to the wheel seat post while rolling along the ground. In this way, the direction can be changed when the swivel chair moves. There are two kinds of existing universal wheels, one is a screw-type universal wheel with a screw rod installed on its upper end, and the other is a rod-type universal wheel with a rod installed on its upper end. It is convenient to disassemble, and it can be screwed into the threaded hole of the wheel seat rod by a wrench. H...

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Problems solved by technology

The whole process is not only time-consuming and labor-intensive, but also prone to danger

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