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CN-121993478-A - Quick-release self-locking device

CN121993478ACN 121993478 ACN121993478 ACN 121993478ACN-121993478-A

Abstract

The invention belongs to the technical field of mechanical connection, and relates to a quick-release self-locking device which comprises an inner core, a tightening sleeve, a locking outer ring and a release button, wherein the inner core is sleeved on a locking shaft, the inner core is a C-shaped pipe with a horn-shaped structure, the upper end of the C-shaped pipe is small in upper end and large in lower end, the upper end of the inner core extends outwards along the radial direction to form an upper limiting ring, the tightening sleeve is sleeved on the inner core and can move along the axial direction of the inner core, the inner core is enabled to be switched between a free moving state and a locking state on the locking shaft, a spiral groove is formed in the tightening sleeve, the locking outer ring is sleeved on the tightening sleeve and can rotate relative to the tightening sleeve, a through hole which is formed along the radial direction of the locking outer ring is formed in the locking outer ring, the release button comprises a plug rod, the plug rod penetrates through the through hole, when the length of the plug rod exposed from the inner end of the through hole is adjustable, and when the length of the plug rod exposed from the inner end of the through hole reaches the maximum, the plug rod is inserted into the spiral groove, and when the exposed length of the plug rod reaches the plug is the plug. The invention can realize quick self-locking and quick release, and has vibration-proof release performance.

Inventors

  • ZHAO JINGUANG
  • FENG QIUSHI
  • ZHANG KEKE
  • YAN BIN
  • Jiang Bifan
  • NI FENGJUN
  • CAI RUI
  • FAN HONGWEI
  • GU KEKE

Assignees

  • 江苏恒力化纤股份有限公司

Dates

Publication Date
20260508
Application Date
20260409

Claims (7)

  1. 1. The quick-release self-locking anti-loosening locker is used for being mounted on a locking shaft (2) and is characterized by comprising an inner core (1), a tightening sleeve (3), a locking outer ring (4) and a loosening button (5); The inner core (1) is used for being sleeved on the locking shaft (2), the inner core (1) is a C-shaped pipe and is provided with a horn-shaped structure with a small upper end and a large lower end, and the upper end of the inner core (1) extends outwards along the radial direction to form an upper limiting ring (6); The tight sleeve (3) is sleeved on the inner core (1) and can move along the axial direction of the inner core (1) so that the state of the inner core (1) on the locking shaft (2) is switched between a free moving state and a locking state, and the tight sleeve (3) is provided with a spiral groove (31), and the central axis of the spiral groove (31) coincides with the central axis of the tight sleeve (3); the locking outer ring (4) is sleeved on the tightening sleeve (3) and can rotate relative to the tightening sleeve (3), a through hole which is radially formed in the locking outer ring (4) is formed in the locking outer ring, and one end of the through hole, which is positioned on the inner wall of the locking outer ring (4), is an inner end; The release button (5) comprises a plug rod (51), the plug rod (51) passes through the through hole, and the length of the plug rod (51) exposed from the inner end of the through hole is adjustable; When the length of the inserted rod (51) exposed from the inner end of the through hole reaches the maximum, the inserted rod (51) is inserted into the spiral groove (31), the spiral groove (31) is used for guiding the inserted rod (51) to spirally ascend, and a limiting tooth (32) for preventing the inserted rod (51) from spirally descending is arranged in the spiral groove (31); When the length of the insert rod (51) exposed from the inner end of the through hole is minimized, the insert rod (51) is separated from the spiral groove (31).
  2. 2. The quick-release self-locking device according to claim 1, further comprising a gasket (7) and a spring pad (8), wherein the gasket (7) and the spring pad (8) are sleeved on the inner core (1) and are positioned between the upper limiting ring (6) and the locking outer ring (4), and the gasket (7) is positioned above the spring pad (8).
  3. 3. The quick-release self-locking anti-loosening locker according to claim 1, wherein the lower end of the tightening sleeve (3) extends outwards along the radial direction to form a lower limiting ring (9) for limiting the locking outer ring (4).
  4. 4. A quick release self locking locker as claimed in claim 1 wherein the lower end of the helical groove (31) extends upwardly in the axial direction of the sleeve (3) to form a first linear recess (33), the first linear recess (33) being for insertion of the spigot (51).
  5. 5. The quick-release self-locking locker of claim 1, wherein the inserted link (51) is provided with a positioning ball (52), the wall of the through hole is provided with an L-shaped groove for limiting the positioning ball (52), the positioning ball (52) is embedded into the L-shaped groove, and the L-shaped groove is formed by firstly forming a second linear groove (10) along the axial direction of the through hole from outside to inside and then forming an arc-shaped groove (11) along the circumferential direction of the through hole to one side of the second linear groove (10).
  6. 6. The quick release self-locking lockers according to claim 5, wherein the release button (5) further comprises a pressing cap (53), the pressing cap (53) being located outside the locking outer ring (4) and fixedly connected with the insert rod (51).
  7. 7. The quick release self-locking lockers according to claim 6, characterized in that the release button (5) further comprises a spring (54), the spring (54) is sleeved on the plunger (51) and clamped by the pressing cap (53) and the locking outer ring (4).

Description

Quick-release self-locking device Technical Field The invention belongs to the technical field of mechanical connection, and relates to a quick-release self-locking anti-loosening locker. Background In the field of mechanical connection, the locker is used as a common fastening part and is widely applied to products such as various mechanical equipment and vehicles, and the locker not only needs to have stable locking performance and prevent a connecting part from loosening under working conditions such as vibration, impact and the like, but also needs to consider the convenience of disassembly and assembly so as to improve the efficiency of equipment assembly and maintenance. At present, the mainstream quick-release self-locking device is designed by taking threads as cores, wherein a patent CN219539276U adopts an open type clip type design, a patent CN108843673B, CN218031020U, CN108953350B adopts a separated thread block design, a patent CN110273911B also adopts a separated thread block design and is additionally provided with a limiting part, the device is locked by virtue of thread engagement, the limiting is also completed through a thread structure, even if the limiting part is additionally provided, the thread still needs to be unscrewed in the disassembling process, the operation is laborious and tedious, the real quick disassembling cannot be realized, the quick loosening effect cannot be realized, meanwhile, the locking effect of the device is realized by virtue of the friction force of threads or gaskets, the loosening problem easily occurs under the vibration working condition, and the stable locking cannot be realized. The design thought of screw thread core has been abandoned to patent CN107975106B, realizes quick detach fast-assembling operation through spring structure, has got rid of the restriction of screw thread operation, but this design can only realize convenient dismouting, can't realize effectual locking effect, and very easily pine takes off under the vibrations operating mode, can't satisfy locking demand of locking part. The common bicycle quick detach round pin class spanner type quick detach device in market relies on the spanner to open and shut and accomplishes pine and take off and lock, and the operation relies on auxiliary component and step loaded down with trivial details, both can't realize screwless quick detach and take off fast, also is difficult to realize reliable locking under the vibrations operating mode, can't compromise quick detach and locking core demand. In summary, the prior art is difficult to meet the comprehensive requirements of quick disassembly, quick release and stable looseness prevention of the locking device in practical application. Therefore, development of a quick-release self-locking anti-loosening locker which can realize quick self-locking and quick loosening without depending on threads and has a reliable anti-loosening effect under vibration working conditions is needed to solve the defects in the prior art. Disclosure of Invention The invention aims to solve the problems in the prior art and provides a quick-dismantling self-locking anti-loosening locker. In order to achieve the above purpose, the invention adopts the following technical scheme: A quick-release self-locking anti-loosening locker is used for being mounted on a locking shaft and comprises an inner core, a tightening sleeve, a locking outer ring and a loosening button; The inner core is a C-shaped pipe and is provided with a horn-shaped structure with a small upper end and a large lower end, and the upper end of the inner core extends outwards along the radial direction to form an upper limit ring; The tight sleeve is sleeved on the inner core and can move along the axial direction of the inner core, so that the state of the inner core on the locking shaft is switched between a free moving state and a locking state (the tight sleeve is pressed down, the tight fit between the inner core and the tight sleeve can be ensured, and the tight sleeve is not easy to slip); The locking outer ring is sleeved on the tightening sleeve and can rotate relative to the tightening sleeve, the inner diameter of the locking outer ring is larger than the outer diameter of the tightening sleeve, and the size difference of the locking outer ring and the tightening sleeve is controlled to be between 0.02 and 0.5 mm; The release button comprises an inserting rod, the inserting rod penetrates through the through hole, and the length of the inserting rod exposed from the inner end of the through hole is adjustable; When the length of the inserted link exposed from the inner end of the through hole reaches the maximum, the inserted link is inserted into the spiral groove, the spiral groove is used for guiding the inserted link to spiral up, and when the locking outer ring is rotated, the bottom of the inserted link can slide on the inclined plane of the spiral groove to drive the tight sleeve to move