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CN-224229066-U - Nut with anti-loosening structure

CN224229066UCN 224229066 UCN224229066 UCN 224229066UCN-224229066-U

Abstract

The utility model relates to the technical field of locknuts, in particular to a nut with a locking structure, which comprises a nut main body, wherein the nut main body is in threaded connection with a bolt, and locking mechanisms for providing elastic fastening force to enable the bolt and the nut main body to maintain stable pressure are respectively arranged on the bolt and the nut main body. The first elastic resetting piece is tightened through the connecting pad, and when the nut main body and the bolt are in threaded connection on two sides of the part, a worker does not need to apply force for tightening the first elastic resetting piece. And but the rotatable blade cutting connection pad of staff releases the shrink spacing, makes first elasticity reset piece normal operating, has solved the extrusion force of locking piece and screw thread body too big, leads to the staff to exert great strength and drives elasticity locking piece deformation, has increased the technical problem of the degree of difficulty that the nut was prevented not hard up.

Inventors

  • ZHANG LIJUN
  • FU CHUNXIANG

Assignees

  • 慈溪市永力电动工具有限公司

Dates

Publication Date
20260512
Application Date
20250616

Claims (8)

  1. 1. The nut with the anti-loosening structure comprises a nut main body (11), wherein the nut main body (11) is in threaded connection with a bolt (1), The bolt (1) and the nut main body (11) are respectively provided with a locking mechanism for providing elastic fastening force to maintain stable pressure of the bolt (1) and the nut main body (11); The bolt (1) and the nut main body (11) are also provided with a synchronous mechanism for limiting the rotation movement of the nut main body (11) outside the bolt (1).
  2. 2. A nut with anti-loosening structure according to claim 1, characterized in that the anti-loosening mechanism comprises a first elastic return element (2), a connection pad (21) and an unlocking mechanism; The first elastic resetting piece (2) is sleeved on the outer side of the bolt (1), and the first elastic resetting piece (2) is used for increasing the elastic fastening force of the nut main body (11) and the bolt (1); The connecting pad (21) is arranged on the first elastic resetting piece (2), the connecting pad (21) is respectively connected with the nut main body (11) and the bolt (1), and the connecting pad (21) is used for realizing the tightening operation of the first elastic resetting piece (2); The unlocking mechanism is arranged on the nut main body (11) and the bolt (1) respectively and is used for releasing the limit of the connecting pad (21) on the first elastic reset piece (2).
  3. 3. A nut with anti-loosening structure as claimed in claim 2, characterized in that the unlocking mechanism comprises a blade (22) and a ring plate (23); The blade (22) is arranged on the connecting pad (21); The ring plate (23) is respectively rotatably arranged on the nut main body (11) and the bolt (1), and the inner side of the ring plate (23) is connected with the blade (22).
  4. 4. The nut with the anti-loosening structure as claimed in claim 1, wherein the synchronizing mechanism comprises an extending mechanism, a clamping mechanism, a positioning mechanism and a guiding mechanism; The extension mechanism is arranged on the bolt (1) and is used for being matched with the axial movement of the nut main body (11); The clamping mechanism is arranged on the extension mechanism and the nut main body (11) and is used for limiting the nut main body (11) and the extension mechanism together; The positioning mechanism is arranged on the extension mechanism and the bolt (1) and is used for assisting the extension mechanism to rotate along with the bolt (1); The guiding mechanism is arranged on the extending mechanism and is used for assisting the extending mechanism to linearly move.
  5. 5. A nut with anti-loosening structure as claimed in claim 4, wherein the spreading mechanism comprises a connecting tube (24), a butt-joint tube (25) and a second elastic return element (26); the connecting pipe (24) is sleeved on the outer side of the bolt (1); the butt joint pipe (25) can be axially and slidably sleeved outside the connecting pipe (24); The second elastic resetting piece (26) is sleeved on the outer side of the connecting pipe (24), and two ends of the second elastic resetting piece (26) are respectively connected with the connecting pipe (24) and the butt joint pipe (25).
  6. 6. The nut with the anti-loosening structure according to claim 4, wherein the clamping mechanism comprises a first elastic clamping piece (27), a second elastic clamping piece (28) and a placement groove (29); the first elastic clamping piece (27) is connected with the butt joint pipe (25); The second elastic clamping piece (28) is in butt joint with the first elastic clamping piece (27), and the second elastic clamping piece (28) is connected with the nut main body (11); the mounting groove (29) is formed in one side, close to the second elastic clamping piece (28), of the nut main body (11), and the mounting groove (29) is used for accommodating the clamping structure of the first elastic clamping piece (27) and the second elastic clamping piece (28).
  7. 7. The nut with the anti-loosening structure as claimed in claim 4, wherein the positioning mechanism includes a plunger (210) and a slot (211); the inserted link (210) is connected with the inner side of the connecting pipe (24); The slot (211) is formed in one side, close to the inserted link (210), of the bolt (1), and the slot (211) is used for being matched with the inserted link (210) to conduct linear movement.
  8. 8. The nut with the anti-loosening structure as claimed in claim 4, wherein the guide mechanism includes a slider (212) and a chute (213); The sliding block (212) is connected with the connecting pipe (24); The sliding groove (213) is formed in one side, close to the sliding block (212), of the butt joint pipe (25), and the sliding groove (213) is used for being matched with the sliding block (212) to conduct linear movement.

Description

Nut with anti-loosening structure Technical Field The utility model relates to the technical field of locknuts, in particular to a nut with a locking structure. Background A nut is a mechanical part with internal threads, usually used in conjunction with a bolt, which is tightened to form a secure connection. Nuts are usually made of metal materials, and common types are hexagonal nuts, round nuts, square nuts and the like, and the nuts are matched with bolts or screws to fix and connect two or more parts. The parts are fastened together by rotating the nuts, so that the parts are ensured to be stable and not loosened, the nuts are detachable fasteners, and the nut has stronger flexibility compared with the modes of welding or riveting and the like, and can be detached and reconnected as required. Particularly, the nut connection provides higher convenience during maintenance and overhaul; The Chinese patent publication No. CN109139670A discloses a compound anti-loose nut, which comprises a nut body, an elastic anti-loose piece arranged on the nut body, a counter bore arranged on one end face of the nut body along the axial direction, a threaded hole fixedly arranged in the counter bore and arranged on the elastic anti-loose piece, the threaded hole coaxial with the central threaded hole of the nut body, elastic pieces uniformly arranged on the lower end face of the elastic anti-loose piece according to the circumference, an elastic piece integrally formed with the elastic anti-loose piece and the lower end of the elastic piece contacting the bottom of the counter bore, and a limit structure arranged at the orifice of the counter bore and in contact with the upper end face of the elastic anti-loose piece. According to the invention, the nut body, the elastic anti-loosening element and the elastic element are combined, the nut body and the elastic anti-loosening element are connected with the screw rod or the bolt, the elastic anti-loosening element tightly holds the screw thread or the screw rod, the anti-loosening effect is achieved, the elastic element provides stable axial elastic force, and the anti-loosening effect is good. Therefore, the invention is suitable for popularization and use; The above patent mentions that the elastic anti-loose element plays a role of holding the bolt or screw by plastic deformation. And the limiting structure limits the elastic anti-loose piece in the countersink, so that the limiting position of the axial displacement of the elastic anti-loose piece is the orifice of the countersink. It is necessary to drive the elastic locking element to move and press against the threaded body, and in order to produce this effect, it is necessary to ensure sufficient contact and pressing force between the locking element and the threaded body. However, if the extrusion force of the locking piece and the screw body is too large, the operator needs to apply a large force to drive the elastic locking piece to deform, so that the difficulty of locking the nut is increased, and therefore, the nut with the locking structure is provided. Disclosure of Invention To above-mentioned problem, provide a nut with locking structure, tighten up first elasticity restoring member through the connection pad, when nut main part and bolt carry out threaded connection in the both sides of spare part, the staff need not to exert the power that makes first elasticity restoring member tighten up, has solved the extrusion force of locking member and screw thread body too big, leads to the staff to need exert great effort to drive elasticity locking member deformation, has increased the technical problem of the degree of difficulty that the nut was prevented becoming flexible. In order to solve the problems in the prior art, the utility model provides a nut with an anti-loosening structure, which comprises a nut main body, wherein the nut main body is in threaded connection with a bolt, and anti-loosening mechanisms for providing elastic fastening force to enable the bolt and the nut main body to maintain stable pressure are respectively arranged on the bolt and the nut main body; the bolt and the nut main body are also provided with a synchronous mechanism for limiting the nut main body to rotate outside the bolt. The locking mechanism comprises a first elastic resetting piece, a connecting pad and an unlocking mechanism, wherein the first elastic resetting piece is sleeved on the outer side of a bolt and used for increasing elastic fastening force of a nut main body and the bolt, the connecting pad is arranged on the first elastic resetting piece and is connected with the nut main body and the bolt respectively and used for achieving tightening operation on the first elastic resetting piece, the unlocking mechanism is arranged on the nut main body and the bolt respectively and used for releasing limit of the connecting pad on the first elastic resetting piece. Preferably, the unlocking mechanism comprises a b