| 摘要 |
A spring bar includes a spring and two tubes are respectively connected to two ends of the spring. Each of the tubes has a slot and a plurality of positioning recesses are defined in two insides defining the slot. Two mounting collars are respectively mounted to the two extensions on the two handles and a through hole is defined through each of the mounting collars. Two positioning members each have a spring member which is biased in the mounting collar corresponding thereto and movably extend through the positioning hole and insert in the slot. An annular groove is defined in each of the positioning members so that the handles can be pulled outward after the positioning members are pushed.
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