Screw-type sleeve light-force unlocking structure

TWM688268UActive Publication Date: 2026-10-01LIEN MASCH CO LTD
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Patent Information

Application Number
TW115206534
Authority / Receiving Office
TW · TW
Patent Type
Utility models
Current Assignee / Owner
Filing Date
2026-07-13
Publication Date
2026-10-01
Estimated Expiration
2036-07-12

Smart Images

  • Figure TWG2TB001914538_001
    Figure TWG2TB001914538_001
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    Figure TWG2TB001914538_002
  • Figure TWG2TB001914538_003
    Figure TWG2TB001914538_003
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Abstract

A threaded sleeve with a light-force unlocking structure is used to lock the threaded rod of a workpiece. The open end of the threaded hole of the sleeve faces the end of the threaded rod. A stop bar is axially provided on the inner end wall of the threaded hole of the sleeve, extending into the center of the end section of the threaded rod. The stop bar sets the distance at which the threaded rod locks into the threaded hole, and the diameter of the stop bar is smaller than the diameter of the threaded hole. When the sleeve is driven to lock the threaded rod of the rotating workpiece, the inner diameter stop bar abuts against the end of the threaded rod to prevent the threaded rod from continuing to lock into the threaded section throughout its entire length, thus avoiding the forced locking of the threaded hole and the corresponding external threads of the threaded rod. After the threaded rod completes the rotation process, the sleeve and the threaded rod can be easily unlocked and quickly separated, thereby improving the workpiece operation efficiency and saving manpower, time and material resources.
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Claims

1. A threaded sleeve with a light-force unlocking structure for locking a threaded rod of a workpiece. The sleeve has an axially arranged threaded hole with a threaded section inside, the open end of the threaded hole facing the end of the threaded rod. A stop bar is axially arranged on the inner end wall of the threaded hole, extending into the center of the end of the threaded section. The stop bar sets the distance at which the threaded rod locks into the threaded hole, and the diameter of the stop bar is smaller than the diameter of the threaded hole. When the sleeve is driven to lock the threaded rod of the rotating workpiece, the stop bar abuts against the end of the threaded rod to prevent the threaded rod from continuing to lock into the threaded section, thus avoiding forced locking between the threaded hole and the corresponding external threads of the threaded rod. After the threaded rod completes the rotation process, the sleeve and the threaded rod can be easily unlocked and quickly separated.

2. The threaded sleeve light-force unlocking structure as described in claim 1, wherein the diameter of the stop bar is at least two-thirds smaller than the diameter of the threaded hole.

3. The threaded sleeve light-force unlocking structure as described in claim 1, wherein the diameter of the stop bar is at least one-third smaller than the diameter of the threaded hole.

4. The threaded sleeve light-force unlocking structure as described in claim 1, wherein the sleeve has an axially provided fixing hole on the inner end wall of the threaded hole, and one end of the stop rod is inserted into the fixing hole.

5. The threaded sleeve light-force unlocking structure as described in claim 1, wherein the sleeve is provided with a plurality of insertion holes in the radial direction of its outer periphery, and a ceramic identification rod is inserted into each insertion hole.