| 摘要 |
A binder for a suspension file has a body, a cover mounted on the body and a control element mounted inside the body. The control element has two rods and a pinion gear. Each rod has a rack gear formed on the inner end and a hook formed on the outer end, and the pinion gear is mounted between the rods and engages the rack gears. One of the rods has a controller securely attached to the rod and extending out of the body. When the controller is pushed or pulled, the hooks will extend or retract simultaneously.
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