CN216478370U

CN216478370U - Elastic anti-loosening groove used on threaded fastener

Info

Publication number: CN216478370U
Application number: CN202123225250.XU
Authority: CN
Inventors: 李武彬; 费玉红; 夏煦川
Original assignee: Jiangsu Hanzhijin Technology Co ltd
Current assignee: Jiangsu Hanzhijin Technology Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-05-10
Anticipated expiration: 2031-12-21

Abstract

The utility model discloses an elastic anti-loosening groove used on a threaded fastener, wherein an axis is cut into from the periphery of the threaded fastener (1) by an anti-loosening notch I (2), two sides of the inner wall of the anti-loosening notch I (2) are respectively straight sides and are in a combined form with the curved sides, a cambered surface combination I (5) is arranged at the groove bottom I (4) of the anti-loosening notch I (2), an axis is cut into from the symmetrical periphery of the anti-loosening notch I (2) in the radial direction by an anti-loosening notch II (3), a cambered surface combination II (7) is arranged at the groove bottom II (6) of the anti-loosening notch II (3), the arc surface combination III (8) is arranged at the position, corresponding to the groove bottom I (4) of the anti-loosening groove opening I (2), on the anti-loosening groove opening II (3), the joint of the curve edge of the anti-loosening groove opening I (2) and the straight edge adopts R arc transitional connection, and the joint of the curve edge of the anti-loosening groove opening II (3) and the straight edge adopts R arc transitional connection. The utility model discloses can realize not producing stress concentration under the equal axial tension, realize lasting not loose purpose.

Description

Elastic anti-loosening groove used on threaded fastener

Technical Field

The utility model relates to an elasticity locking groove for threaded fastener is last.

Background

In production life, a threaded fastener is usually not separated in a connection assembly process, in the connection assembly process, a threaded connection mode is a common fastening structure, but the threaded connection mode has the defect that threads can be automatically loosened in severe vibration and variable load environments, so that equipment is damaged, disassembled and even safety accidents are caused. At present, through research, engineering plastics are permanently attached to threads, so that the engineering plastics are extruded to generate strong reaction force in the process of tightening the internal threads and the external threads, the friction force between the internal threads and the external threads is greatly increased, but the plastic anti-loosening mode is influenced by the environment and cannot meet the requirements of high temperature and severe cold.

Disclosure of Invention

In order to overcome the defects of the prior art, the technical problem is solved, the utility model provides an elastic anti-loosening groove used on a threaded fastener.

The utility model adopts the following technical scheme: the utility model provides an elasticity locking groove for threaded fastener is last, it mainly includes locking notch I and locking notch II that are equipped with on threaded fastener, locking notch I and locking notch II distribute along threaded fastener's axis direction is perpendicular, locking notch I cuts into the axis from threaded fastener's periphery, one side of the inner wall of locking notch I is the straight flange, the opposite side is and combines the form with the curve limit, tank bottom I of locking notch I is equipped with cambered surface combination I, locking notch II radially cuts into the axis from the periphery of locking notch I symmetry, tank bottom II of locking notch II is equipped with cambered surface combination II, be equipped with cambered surface combination III with I correspondence of tank bottom of locking notch I on locking notch II, the curve limit and the straight flange of locking notch I combine the department and adopt R circular arc transitional coupling, the curve limit and the straight flange of locking notch II combine the department and adopt R circular arc transitional coupling.

The distance between the anti-loosening notch I and the anti-loosening notch II is larger than 0.5 mm. The top width of locking notch I be greater than the bottom width, the trough rim of locking notch I is the hypotenuse of angularity, II top widths of locking notch are greater than the bottom width, the trough rim of locking notch II is the hypotenuse of angularity.

The width of locking notch I from top to bottom the width the same, the width of locking notch II from top to bottom the width the same. The depth of the cut-in of the anti-loosening notch I from the periphery of the threaded fastener is L1, and the periphery of the 3/5 threaded fastener is less than L1 and less than 9/10. The depth of the cut-in of the anti-loosening notch II from the periphery of the threaded fastener is L2, and the periphery of the 3/5 threaded fastener is less than L2 and less than 9/10. The arc surface circle center I of the arc surface combination I is arranged on the groove edge of the anti-loosening notch I or on one side of the groove edge. And the circle center II of the cambered surface combination II is positioned on the groove edge or one side of the anti-loosening notch II. The circle center III of the cambered surface combination III is positioned on the outer side of the anti-loosening notch I, and the two sides of the cambered surface combination III are connected with the cambered surface to be in transition R1 which is larger than the arc of R.

The utility model discloses following beneficial effect has: after the technical scheme is adopted, the utility model discloses can realize not producing stress concentration under the equal axial tension, realize lasting not loose purpose. The utility model discloses can make thin-walled nut can't use the defect that the elastic groove is connected. The utility model discloses reliable antidetonation locking performance realizes the locking of each other of optional position screw thread and screw member. The utility model discloses can not limit the reuse of no difference, promote work piece life cycle greatly. The utility model discloses do not receive the temperature, the influence of the violent change of operating condition, the applied environment scope is extensive. The utility model discloses can choose for use any metal and nonmetal, realize that material, appearance, specification and size are unrestricted.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic diagram of a first embodiment of the present invention.

Fig. 3 is a schematic reception diagram according to a first embodiment of the present invention.

Fig. 4 is a schematic diagram of a second embodiment of the present invention.

Detailed Description

To facilitate understanding and implementing the present invention by those of ordinary skill in the art, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

Embodiment one, in fig. 1, fig. 2 and fig. 3, the utility model provides an elasticity anti-loosening groove for threaded fastener, it mainly includes check notch i 2 and check notch ii 3 that are equipped with on threaded fastener 1, the distance between check notch i 2 and check notch ii 3 is greater than 0.5mm, the distance between check notch i 2 and check notch ii 3 of this embodiment is 0.6mm, check notch i 2 and check notch ii 3 are distributed vertically along the axis direction of threaded fastener 1, check notch i 2 cuts into the axis from the periphery of threaded fastener 1, the depth that check notch i 2 cuts into from the periphery of threaded fastener 1 is L1, the periphery of 3/5 threaded fastener 1 < L1 < 9/10 threaded fastener 1 periphery, the L1 > 4/5 threaded fastener 1 of this embodiment, one side of the inner wall of notch i 2 is the straight edge, the other side is the form that combines with the curved edge, tank bottom I4 of locking notch I2 is equipped with cambered surface combination I5, locking notch II 3 radially cuts into the axis from the periphery that locking notch I2 is symmetrical, the degree of depth that locking notch II 3 cuts into from the periphery of threaded fastener 1 is L2, 3/5 threaded fastener 1 periphery < L2 < 9/10 threaded fastener 1 periphery, tank bottom II 6 of locking notch II 3 is equipped with cambered surface combination II 7, be equipped with cambered surface combination III 8 with the tank bottom I4 correspondence of locking notch I2 on locking notch II 3, the curved edge and the straight flange junction of locking notch I2 adopt R circular arc transitional coupling, the curved edge and the straight flange junction of locking notch II 3 adopt R circular arc transitional coupling. Cambered surface combination I5's cambered surface centre of a circle I9 perhaps one side on the trough rim of locking notch I2, cambered surface centre of a circle II 10 of cambered surface combination II 7 perhaps one side on the trough rim of locking notch II 3, cambered surface combination III 8's cambered surface centre of a circle III 11 in the locking notch I2 outside, cambered surface combination III 8's both sides and cambered surface connection transition R1 are greater than the transition of R circular arc, locking notch I2's width from top to bottom the width the same, locking notch II 3's width is the same from top to bottom.

Second embodiment, in fig. 4, in fig. 1, 2 and 3, the present invention provides an elastic anti-loosening groove for a threaded fastener, which mainly includes a locking notch i 2 and a locking notch ii 3 provided on the threaded fastener 1, a distance between the locking notch i 2 and the locking notch ii 3 is greater than 0.5mm, a distance between the locking notch i 2 and the locking notch ii 3 of the present embodiment is 0.6mm, the locking notch i 2 and the locking notch ii 3 are vertically distributed along an axial direction of the threaded fastener 1, the locking notch i 2 is cut into the axial direction from an outer periphery of the threaded fastener 1, a depth of the locking notch i 2 cut into the outer periphery of the threaded fastener 1 is L1, an outer periphery of the 3/5 threaded fastener 1 is less than L1 < 9/10 outer periphery of the threaded fastener 1, L1 > 4/5 of the present embodiment of the threaded fastener 1, one side of an inner wall of the notch i 2 is a straight edge, the opposite side is and combines the form with the curved edge, tank bottom I4 of locking notch I2 is equipped with cambered surface combination I5, the axis has been cut into from the periphery of locking notch I2 symmetry in locking notch II 3 is radial, the degree of depth that locking notch II 3 cut into from the periphery of threaded fastener 1 is L2, 3/5 threaded fastener 1 periphery < L2 < 9/10 threaded fastener 1 periphery, tank bottom II 6 of locking notch II 3 is equipped with cambered surface combination II 7, be equipped with cambered surface combination III 8 with the tank bottom I4 of locking notch I2 department of corresponding on locking notch II 3, the curved edge and the straight flange of locking notch I2 combine the department and adopt R circular arc transitional coupling, the curved edge and the straight flange of locking notch II 3 combine the department and adopt R circular arc transitional coupling. Cambered surface combination I5's cambered surface centre of a circle I9 perhaps one side on the trough rim of locking notch I2, cambered surface combination II 7's cambered surface centre of a circle II 10 perhaps one side on the trough rim of locking notch II 3, cambered surface combination III 8's cambered surface centre of a circle III 11 in the locking notch I2 outside, cambered surface combination III 8's both sides and cambered surface connection transition R1 are greater than the R circular arc transition, locking notch I2's top width be greater than the bottom width, locking notch I2's trough rim is the hypotenuse of taking the angle, locking notch II 3 top width is greater than the bottom width, locking notch II 3's trough rim is the hypotenuse of taking the angle.

The utility model discloses a use: when axial acting force F is applied from the outer side of the anti-loosening notch II 3, the shadow part in the graph 3 can be deformed, stress concentration points are formed at the positions of the arc surface combination I5 and the arc surface combination II 7, and meanwhile, the stress is dispersed on the corresponding arc surface and R arc transition by the arc surface combination I5 and the arc surface combination II 7, so that the concentration points become concentration surfaces, the damage of stress concentration to a workpiece is relieved at the thickened dotted line part of the graph 3, and the anti-loosening notch I2 and the anti-loosening notch II 3 are ensured not to form plastic deformation due to deformation; the distance increase between cambered surface combination III 8 design makes locking notch I2 bottom and locking notch II 3 avoids here atress to suffer destruction, and when axial effort F removed the back, locking notch I2 and locking notch II 3 resume initial condition, play the not weak effect of reusability.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the concept of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An elastic anti-loosening groove for a threaded fastener is characterized by mainly comprising an anti-loosening notch I (2) and an anti-loosening notch II (3) which are arranged on the threaded fastener (1), wherein the anti-loosening notch I (2) and the anti-loosening notch II (3) are vertically distributed along the axis direction of the threaded fastener (1), the anti-loosening notch I (2) cuts into the axis from the periphery of the threaded fastener (1), one side of the inner wall of the anti-loosening notch I (2) is a straight edge, the other side of the inner wall of the anti-loosening notch I (2) is in a shape combined with a curved edge, a cambered surface combination I (5) is arranged at the groove bottom I (4) of the anti-loosening notch I (2), the anti-loosening notch II (3) radially cuts into the axis from the periphery symmetrical to the anti-loosening notch I (2), a cambered surface combination II (7) is arranged at the groove bottom II (6) of the anti-loosening notch II (3), a cambered surface combination (8) is arranged at the position, which corresponds to the groove bottom I (4) of the anti-loosening notch I (2), the junction of the curved edge and the straight edge of the anti-loosening notch I (2) is in R-arc transitional connection, and the junction of the curved edge and the straight edge of the anti-loosening notch II (3) is in R-arc transitional connection.

2. The elastic anti-loosening groove for the threaded fastener as claimed in claim 1, wherein the distance between the anti-loosening notch I (2) and the anti-loosening notch II (3) is greater than 0.5 mm.

3. The elastic anti-loosening groove for threaded fasteners as claimed in claim 1, wherein the top width of the anti-loosening notch I (2) is greater than the bottom width, the groove edge of the anti-loosening notch I (2) is a beveled edge with an angle, the top width of the anti-loosening notch II (3) is greater than the bottom width, and the groove edge of the anti-loosening notch II (3) is a beveled edge with an angle.

4. The elastic anti-loosening groove for threaded fasteners as claimed in claim 1, wherein said anti-loosening notch I (2) has the same width from top to bottom, and said anti-loosening notch II (3) has the same width from top to bottom.

5. The elastic anti-loosening groove for threaded fasteners as claimed in claim 1, wherein the depth of the notch i (2) cut into the threaded fastener (1) is L1, and the circumference of 3/5 threaded fastener (1) < L1 < 9/10.

6. The elastic anti-loosening groove for threaded fasteners as claimed in claim 1, wherein the depth of the cut-in of the anti-loosening groove II (3) from the outer periphery of the threaded fastener (1) is L2, and the outer periphery of the 3/5 threaded fastener (1) is < L2 < 9/10.

7. The elastic anti-loosening groove for the threaded fastener as claimed in claim 1, wherein the center of the arc I (9) of the arc combination I (5) is on the groove edge or one side of the anti-loosening groove opening I (2).

8. The elastic anti-loosening groove for the threaded fastener as claimed in claim 1, wherein the center II (10) of the arc surface combination II (7) is on the groove edge or one side of the anti-loosening groove opening II (3).

9. The elastic anti-loosening groove for the threaded fastener as claimed in claim 1, wherein the center III (11) of the cambered surface combination III (8) is positioned outside the anti-loosening groove opening I (2), and the connection transition R1 between the two sides of the cambered surface combination III (8) and the cambered surface is greater than the transition of an arc R.