CN210122985U - Anti-loose quick-change nut - Google Patents

Abstract

The utility model provides a locking quick change nut. Locking quick-change nut includes: a nut assembly having an internal thread; the screwing assembly comprises a sleeving structure and a separating structure, the sleeving structure is sleeved outside the nut assembly, the separating structure is detachably connected with the sleeving structure and is positioned in the sleeving structure, the separating structure is in rotation stopping connection with the nut assembly so that the screwing assembly has a rotation stopping state which is static relative to the nut assembly, and when the screwing assembly is in the rotation stopping state, the screwing assembly can drive the nut assembly to rotate together; the anti-loosening structure is arranged on one side, facing the to-be-fastened piece, of the screwing component so as to increase the friction force between the screwing component and the to-be-fastened piece; wherein, the anti-loosening structure is made of friction materials. The utility model discloses solved effectively that locking quick change nut's locking performance is relatively poor among the prior art, influenced staff's personal safety's problem.

Description

Anti-loose quick-change nut

Technical Field

The utility model relates to a fastener technical field particularly, relates to a locking quick change nut.

Background

At present, the nut is applied to various devices (such as an angle grinder) in the mechanical field, and can achieve the purposes of connection and screwing. However, after the angle grinder is stopped, the angle grinder has large inertia, so that the nut can be loosened, slices can fly out, and personal safety is endangered.

SUMMERY OF THE UTILITY MODEL

A primary object of the utility model is to provide a locking quick change nut to the locking performance of solving among the prior art locking quick change nut is relatively poor, influences the problem of staff's personal safety.

In order to achieve the above object, the utility model provides a locking quick change nut, include: a nut assembly having an internal thread; the screwing assembly comprises a sleeving structure and a separating structure, the sleeving structure is sleeved outside the nut assembly, the separating structure is detachably connected with the sleeving structure and is positioned in the sleeving structure, the separating structure is in rotation stopping connection with the nut assembly so that the screwing assembly has a rotation stopping state which is static relative to the nut assembly, and when the screwing assembly is in the rotation stopping state, the screwing assembly can drive the nut assembly to rotate together; the anti-loosening structure is arranged on one side, facing the to-be-fastened piece, of the screwing component so as to increase the friction force between the screwing component and the to-be-fastened piece; wherein, the anti-loosening structure is made of friction materials.

Further, the anti-loosening structure is bonded or clamped with the sleeving structure or connected through a fastener.

Furthermore, the sleeving structure is a first annular structure, the anti-loosening structure is a second annular structure, and the first annular structure and the second annular structure are coaxially arranged.

Further, the nut component has the rotation stopping section arranged along the axial direction of the nut component, and the anti-loose quick-change nut further comprises: the cover plate is sleeved outside the rotation stopping section and matched with the rotation stopping section in a rotation stopping way, and the cover plate covers the separation structure; wherein, the cover plate setting is dodged to anti loosening structure.

Further, the nut component includes the nut body, the nut body have the via hole and with the installation department of via hole intercommunication, the inner wall of via hole has the internal thread, locking quick change nut still includes: supplementary locking structure sets up in the installation department, supplementary locking structure with wear to establish the downthehole fastener contact of treating to increase locking quick change nut and treat the frictional force between the fastener, take place to rotate for treating the fastener in order to prevent locking quick change nut.

Furthermore, the installation part is an annular groove, the auxiliary anti-loosening structure is a third annular structure, and the third annular structure extends into the annular groove to be bonded with the groove wall of the annular groove.

Furthermore, the auxiliary anti-loosening structure comprises a clamping section and a conical section which are connected in sequence, and the size of the conical section is gradually increased along the direction from the clamping section to the conical section; wherein, the toper section is connected with the installation department to with supplementary anti loosening structure and this body coupling of nut together, the section is established with wearing to establish the fastener joint of treating in the downthehole to the card.

Further, the mounting part is a groove-shaped structure matched with the outer surface of the conical section, and the conical section is clamped or bonded with the groove-shaped structure or connected through a fastener.

Further, the clamping section comprises a plurality of sub clamping parts arranged along the circumferential direction of the conical section at intervals, and each sub clamping part extends towards the through hole.

Furthermore, the mounting part is a blind hole, the auxiliary anti-loosening structure is a columnar structure, and the columnar structure extends into the blind hole; wherein, the columnar structure is connected with the installation part in a clamping or bonding way or through a fastener.

Further, the maximum distance between the surface of the auxiliary anti-loosening structure facing the through hole and the central axis of the through hole is smaller than the distance between the crest of the internal thread and the central axis of the through hole.

Further, the auxiliary anti-loosening structure is made of friction materials.

Use the technical scheme of the utility model, locking quick change nut includes the nut component, revolves wrong subassembly and anti loosening structure. Wherein the nut component has an internal thread. The screwing component comprises a sleeving structure and a separating structure, the sleeving structure is sleeved outside the nut component, the separating structure is detachably connected with the sleeving structure and is located in the sleeving structure, the separating structure is connected with the nut component in a rotation stopping mode, so that the screwing component is in a rotation stopping state static relative to the nut component, and when the screwing component is in the rotation stopping state, the screwing component can drive the nut component to rotate together. Wherein, the anti-loosening structure is made of friction materials. Like this, locking structure setting of locking quick change nut revolves the subassembly on soon and treats one side of fastener, and then has increased and has revolved the subassembly and treat the frictional force between the fastener to prevent that locking quick change nut from taking place to rotate and influencing the effect of screwing up for treating the fastener, and then promoted locking effect of locking quick change nut, solved among the prior art locking quick change nut's locking performance relatively poor, influence the problem of staff's personal safety. When the anti-loosening quick nut needs to be disassembled, the screwing assembly is operated and is in a rotation stopping state, the screwing assembly can drive the nut assembly to rotate together, and then a worker can disassemble the nut assembly by rotating the screwing assembly.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows an exploded view of a first embodiment of a locking quick-change nut according to the invention;

fig. 2 shows a schematic perspective view of the quick release nut in fig. 1;

FIG. 3 shows a half-sectional view of the quick release nut of FIG. 2 assembled with a fastener;

fig. 4 shows an exploded view of a second embodiment of the anti-loose quick-change nut according to the invention;

fig. 5 shows a schematic perspective view of the quick release nut in fig. 4;

FIG. 6 shows a half-sectional view of the quick release nut of FIG. 5 assembled with a fastener;

fig. 7 shows an exploded view of a third embodiment of a locking quick-change nut according to the invention;

fig. 8 is a schematic perspective view of an auxiliary anti-loose structure of the anti-loose quick-change nut in fig. 7;

fig. 9 shows a schematic perspective view of the quick release nut in fig. 7;

FIG. 10 shows a half-sectional view of the quick release nut of FIG. 9 assembled with a fastener;

fig. 11 shows a half-sectional view of a fourth embodiment of a locking quick-change nut according to the invention after assembly with a fastener;

FIG. 12 shows a half-sectional view of the lock quick-change nut of FIG. 11; and

fig. 13 is a schematic perspective view showing the assembled nut body and auxiliary anti-loose structure of the anti-loose quick-change nut in fig. 12.

Wherein the figures include the following reference numerals:

10. a nut assembly; 11. an internal thread; 12. a nut body; 121. a rotation stopping section; 123. a via hole; 124. an installation part; 13. a nut holder; 14. a holder; 15. a roller; 20. a screwing assembly; 21. a sheathing structure; 22. a partition structure; 30. a reset member; 40. pressing a plate; 50. a first locking member; 60. a cover plate; 70. a second locking member; 80. a bearing; 90. a seal ring; 100. a locking structure; 110. a fastener is to be fastened; 130. an auxiliary anti-loosening structure; 131. a clamping section; 132. a tapered section.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present invention, unless otherwise specified, the use of directional words such as "upper and lower" is generally in reference to the orientation shown in the drawings, or to the vertical, perpendicular or gravitational orientation; likewise, for ease of understanding and description, "left and right" are generally to the left and right as shown in the drawings; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself, but the above directional terms are not intended to limit the present invention.

In order to solve among the prior art locking quick change nut's locking performance relatively poor, influence the problem of staff's personal safety, this application provides a locking quick change nut.

Example one

As shown in fig. 1 to 3, the anti-loose quick-change nut includes a nut assembly 10, a screwing assembly 20 and an anti-loose structure 100. Wherein the nut component 10 has an internal thread 11. The screwing assembly 20 comprises a sleeving structure 21 and a separating structure 22, the sleeving structure 21 is sleeved outside the nut assembly 10, the separating structure 22 is detachably connected with the sleeving structure 21 and is located in the sleeving structure 21, the separating structure 22 is in rotation stopping connection with the nut assembly 10, so that the screwing assembly 20 has a rotation stopping state which is static relative to the nut assembly 10, and when the screwing assembly 20 is in the rotation stopping state, the screwing assembly 20 can drive the nut assembly 10 to rotate together. The anti-loosening structure 100 is provided on the side of the screw assembly 20 facing the member to be fastened 110 to increase the frictional force between the screw assembly 20 and the member to be fastened 110. Wherein the anti-loosening structure 100 is made of a friction material.

By using the technical scheme of the embodiment, the anti-loose structure 100 of the anti-loose quick-change nut is arranged on the screwing component 20 and faces to one side of the fastener 110 to be fastened, so that the friction between the screwing component 20 and the fastener 110 to be fastened is increased, the anti-loose quick-change nut is prevented from rotating relative to the fastener 110 to be fastened to influence the screwing effect, the anti-loose effect of the anti-loose quick-change nut is further improved, and the problems that in the prior art, the anti-loose performance of the anti-loose quick-change nut is poor and the personal safety of workers is influenced. When the anti-loose quick nut needs to be disassembled, the screwing assembly 20 is operated and the screwing assembly 20 is in a rotation stopping state, the screwing assembly 20 can drive the nut assembly 10 to rotate together, and then a worker can disassemble the nut assembly 10 by rotating the screwing assembly 20.

Alternatively, the anti-loose structure 100 is made of a material with a high friction coefficient, such as rubber or polyurethane.

In the present embodiment, the anti-loosening structure 100 is bonded to the sleeve structure 21. Therefore, the connection mode makes the connection stability between the anti-loose structure 100 and the sleeving structure 21 better on one hand, and prevents the anti-loose performance of the anti-loose quick-change nut from being influenced by the separation of the anti-loose structure and the sleeving structure; on the other hand, the connection between the anti-loosening structure 100 and the sleeving structure 21 is easier and simpler, and the labor intensity of workers is reduced.

It should be noted that the connection manner between the anti-loosening structure 100 and the sleeve structure 21 is not limited to this. Optionally, the anti-loose structure 100 is snapped or connected with the sleeve structure 21 by a fastener. Thus, the connection mode makes the dismounting and the replacing of the anti-loose structure 100 and the sleeve structure 21 easier and more convenient, and reduces the labor intensity of the working personnel.

As shown in fig. 1, the sheathing structure 21 is a first annular structure, and the anti-loosening structure 100 is a second annular structure, and the first annular structure and the second annular structure are coaxially disposed. Specifically, the first annular structure is bonded on the surface of the second annular structure facing the first annular structure, so that a large friction force is generated between the surface of the first annular structure far away from the second annular structure and the to-be-fastened piece 110 (slice), and the anti-loosening performance of the anti-loosening quick-change nut is prevented from being affected by the relative sliding between the anti-loosening quick-change nut and the to-be-fastened piece 110 (slice). Like this, above-mentioned setting makes locking quick change nut's outward appearance more pleasing to the eye for first annular structure and second annular structure's assembly is easier, simple and convenient.

As shown in fig. 2 and 3, the nut assembly 10 has a rotation stop segment 121 disposed along an axial direction thereof, and the check quick-change nut further includes a cover plate 60. The cover plate 60 is sleeved outside the rotation stopping section 121 and is in rotation stopping fit with the rotation stopping section 121, and the cover plate 60 covers the separation structure 22. Wherein, the anti-loosening structure 100 is arranged to avoid the cover plate 60. Specifically, the second annular structure is sleeved outside the cover plate 60 to prevent structural interference between the two from affecting the dismounting and mounting of the cover plate 60, and further improve the structural reliability of the anti-loose quick-change nut.

As shown in fig. 1, the rotation-stopping section 121 has a catching groove, and the locking quick-change nut further includes a second locking member 70. Wherein, the second locking member 70 is disposed in the slot, and the second locking member 70 and the pressing plate 40 are respectively disposed at two sides of the cover plate 60. In this way, the cover plate 60 is tightly connected with the nut component 10 through the second locking member 70, so that the cover plate 60 is prevented from being separated from the nut component 10, and the structural stability of the locking quick nut is improved.

As shown in fig. 1, the nut assembly 10 further includes a nut carrier 13, a cage 14, and a plurality of rollers 15. The nut holder 13 and the nut body 12 are coaxially arranged and connected together. The cage 14 is provided in the nut holder 13 and abuts against the nut body 12, the cage 14 has a plurality of roller holes provided along a circumferential direction thereof, and the plurality of rollers 15 are provided in the plurality of roller holes, respectively. Specifically, the nut body 12 and the nut holder 13 rotate synchronously, and the retainer 14 can rotate relative to the nut body 12 and the nut holder 13 with a stop position therebetween, that is, the rotation angle of the retainer 14 is limited. The plurality of rollers 15 are disposed in a corresponding plurality of roller holes in the cage 14 and are rotatable therein. When the quick nut needs to be screwed into the motor spindle, the sheathing structure 21 is rotated anticlockwise, the separation structure 22 rotates along with the sheathing structure 21, so that the first extension part of the separation structure 22 is matched with the third extension part of the retainer 14 in a stop manner, and the retainer 14 is located at the first position and can drive the nut frame 13 and the nut body 12 to rotate in the same direction, so that the nut assembly 10 is locked on the motor spindle; when the quick nut needs to be screwed out of the motor spindle, the sleeving structure 21 rotates clockwise, the nut component 10 cannot rotate due to the fact that the acting force between the nut component 10 and the motor spindle is large at the moment, the sleeving structure 21 drives the separation structure 22 to rotate clockwise until the rollers 15 enter the roller grooves in the separation structure 22, the retainer 14 is located at the second position, the force in the axial direction of the quick nut disappears, and the friction force between the nut component 10 and the motor spindle disappears immediately. Then, the sleeving structure 21 is rotated continuously, so that the sleeving structure 21 drives the nut assembly 10 to rotate until the nut assembly is screwed out from the motor spindle.

As shown in fig. 1, the anti-loose quick-change nut further comprises three return pieces 30. Wherein the reset member 30 is disposed in the accommodating space formed by the first extension portion of the partition structure 22 and the fourth extension portion of the nut frame 13, and the reset member 30 provides the first extension portion with a reset force moving to a side away from the fourth extension portion (or the reset member 30 provides the fourth extension portion with a reset force moving to a side away from the first extension portion). In this way, the relative position between the nut component 10 and the screwing component 20 is reset through the resetting piece 30, so that a worker can fast screw the anti-loosening quick nut into the motor spindle when reusing the anti-loosening quick nut, and the assembly time is shortened. Meanwhile, the reset piece 30 makes the acting force between the nut component 10 and the screwing component 20 more gradual, and prevents the nut component 10 from generating larger impact force in the moment of rotation to influence the service life of the anti-loose quick nut.

As shown in fig. 1, the locknut further includes a pressing plate 40. The pressing plate 40 is pressed on the separating structure 22, and the pressing plate 40 has at least one fifth extending portion, and a part of the fifth extending portion extends into the groove and abuts against the separating structure 22. Thus, the partition structure 22 is located between the pressing plate 40 and the holder 14, on one hand, the partition structure 22 can be protected, and the partition structure 22 is prevented from being separated from the sleeving structure 21; on the other hand, the acting force between the partition structure 22 and the retainer 14 can be increased, and the first extending part of the partition structure 22 can be ensured to be matched with the third extending part of the retainer 14 in a stopping way.

As shown in fig. 1, the locknut further includes a first locking member 50. The first locking member 50 is pressed on the pressing plate 40 and is in interference fit with the sheathing structure 21 to prevent the pressing plate 40 and the separating structure 22 from being separated from the sheathing structure 21. Thus, the arrangement can prevent the pressing plate 40 from being separated from the sleeve structure 21, and the structural stability of the anti-loosening quick nut is improved.

In this embodiment, the first locking member 50 and the second locking member 70 are snap springs.

As shown in fig. 3, the quick nut further includes a bearing 80. Wherein the bearing 80 is arranged between the cover plate 60 and the separation structure 22. Thus, the above arrangement enables the screwing assembly 20 to apply a large axial force to the cover plate 60 in the interior of the speed nut, and both sides only need to overcome the rolling friction force, so that the quick nut can be disassembled more time-saving and labor-saving by the worker.

As shown in fig. 3, the quick nut further includes a sealing ring 90 disposed between the pressure plate 40 and the cover plate 60. The sealing ring 90 not only serves to seal the pressure plate, but also serves to absorb shock and cushion the nut assembly 10.

Example two

The difference between the quick-change locknut in the second embodiment and the first embodiment is that: the anti-loose quick-change nut has different structures.

As shown in fig. 4 to 6, the nut assembly 10 includes a nut body 12, the nut body 12 has a through hole 123 and a mounting portion 124 communicating with the through hole 123, an inner wall of the through hole 123 has an internal thread 11, and the anti-loose quick-change nut further includes an auxiliary anti-loose structure 130. The auxiliary locking structure 130 is disposed in the mounting portion 124, and the auxiliary locking structure 130 contacts the to-be-fastened member 110 penetrating through the through hole 123 to increase friction between the quick-change locknut and the to-be-fastened member 110, so as to prevent the quick-change locknut from rotating relative to the to-be-fastened member 110. Thus, after the anti-loose quick-change nut is screwed on the to-be-fastened element 110 (such as a motor spindle), the auxiliary anti-loose structure 130 is deformed to some extent due to the screwing of the anti-loose quick-change nut, and the friction between the anti-loose quick-change nut and the to-be-fastened element 110 (such as the motor spindle) is increased. After the angle grinder is powered off, the friction force can further prevent the looseness of the looseness-preventing quick-change nut from affecting the looseness-preventing and fastening effects of the looseness-preventing quick-change nut.

Specifically, when the anti-loose quick-change nut is screwed on the to-be-fastened component 110 (such as a motor spindle), a large friction force is generated between the anti-loose structure 100 and a slice located between the motor and the anti-loose quick-change nut, and the auxiliary anti-loose structure 130 is deformed to a certain extent, so that the friction force between the auxiliary anti-loose structure 130 and the motor spindle is increased. After the angle grinder is powered off, the friction between the anti-loosening structure 100 and the slice can prevent the anti-loosening quick-change nut from being loosened automatically, and the friction generated between the auxiliary anti-loosening structure 130 and the motor spindle can further prevent the anti-loosening quick-change nut from being loosened automatically, so that the anti-loosening performance of the anti-loosening quick-change nut is improved.

In this embodiment, the mounting portion 124 is an annular groove, and the auxiliary anti-loose structure 130 is a third annular structure extending into the annular groove to be bonded with a groove wall of the annular groove. Therefore, the connection mode makes the connection between the auxiliary anti-loosening structure 130 and the nut body 12 more stable, and prevents the two from being separated from each other to influence the structural stability of the anti-loosening quick-change nut. Meanwhile, the structure is simple, the processing and the realization are easy, and the labor intensity of workers is reduced.

The connection manner of the auxiliary anti-loosening structure 130 and the mounting portion 124 is not limited to this. Optionally, the secondary anti-loosening structure 130 is snapped into the mounting portion 124 or attached by fasteners. Thus, the auxiliary anti-loosening structure 130 and the mounting portion 124 are connected in such a way that the two can be more easily and conveniently disassembled, and the labor intensity of workers is reduced.

In the present embodiment, the maximum distance between the surface of the auxiliary loosening prevention structure 130 facing the via hole 123 and the central axis of the via hole 123 is smaller than the distance between the crest of the internal thread 11 and the central axis of the via hole 123. In this way, in the process of assembling the anti-loose quick-change nut and the to-be-fastened component 110 (such as a motor spindle), the auxiliary anti-loose structure 130 is arranged to prevent the auxiliary anti-loose structure 130 from interfering with the motor spindle in a structural manner to affect the assembly of the motor spindle, so that the anti-loose quick-change nut and the to-be-fastened component 110 are easier to assemble. Meanwhile, when the anti-loose quick-change nut is screwed on the to-be-fastened piece 110 (such as a motor spindle), the arrangement ensures that the auxiliary anti-loose structure 130 can be in contact with the motor spindle, and friction force is generated between the auxiliary anti-loose structure 130 and the motor spindle, so that the anti-loose performance of the auxiliary anti-loose structure 130 is improved.

In the present embodiment, the auxiliary loosening prevention structure 130 is made of a friction material.

EXAMPLE III

The difference between the quick-change locknut in the third embodiment and the second embodiment is that: the auxiliary anti-loose structure 130 has a different structure.

As shown in fig. 7 to 10, the auxiliary loosening prevention structure 130 includes a fastening section 131 and a tapered section 132 connected in sequence, and the size of the tapered section 132 is gradually increased along the direction from the fastening section 131 to the tapered section 132. The tapered section 132 is connected to the mounting portion 124 to connect the auxiliary anti-loose structure 130 to the nut body 12, and the fastening section 131 is fastened to the fastener 110 inserted into the through hole 123. Thus, when the anti-loose quick-change nut is screwed on the member to be fastened 110 (such as a motor spindle), the clamping section 131 generates a certain deformation, so that the friction between the clamping section 131 and the motor spindle is increased. After the angle grinder is powered off, the friction force generated between the clamping section 131 and the motor spindle can further prevent the self-loosening of the anti-loosening quick-change nut, and the anti-loosening performance of the anti-loosening quick-change nut is improved. Meanwhile, the structure is simple, and the processing and the realization are easy.

Specifically, the mounting portion 124 has a groove-like structure adapted to an outer surface of the tapered section 132, and the tapered section 132 is engaged with the groove-like structure. Thus, the mounting portion 124 is pressed into the groove-shaped structure to connect the auxiliary anti-loosening structure 130 with the nut body 12, so that the nut body 12 can drive the auxiliary anti-loosening structure 130 to rotate. Meanwhile, the nut body 12 and the auxiliary anti-loosening structure 130 are easier and simpler to disassemble and assemble due to the connection mode, and the labor intensity of workers is reduced.

It should be noted that the connection manner between the nut body 12 and the auxiliary anti-loosening structure 130 is not limited to this. Optionally, the nut body 12 is bonded or connected by a fastener to the secondary anti-loosening structure 130.

Optionally, the clamping section 131 includes a plurality of sub-clamping portions arranged at intervals along the circumference of the tapered section 132, each sub-clamping portion extending toward the via 123. In the present embodiment, the locking segment 131 includes two sub locking portions spaced apart along the circumference of the tapered segment 132. Thus, the arrangement can further increase the contact area between the clamping section 131 and the to-be-fastened piece 110 (such as a motor spindle), further increase the friction force between the clamping section 131 and the to-be-fastened piece, and improve the anti-loosening effect of the anti-loosening quick-change nut.

Example four

The difference between the anti-loose quick-change nut in the fourth embodiment and the second embodiment is that: the auxiliary anti-loose structure 130 has a different structure.

As shown in fig. 11 to 13, the mounting portion 124 is a blind hole, and the auxiliary anti-loose structure 130 is a columnar structure, and the columnar structure extends into the blind hole. Wherein the columnar structure is bonded to the mounting portion 124. Specifically, stretch into the blind hole with the columnar structure to make the columnar structure bond with the pore wall of blind hole, make nut body 12 can drive the columnar structure and rotate. Thus, when the anti-loose quick-change nut is screwed on the to-be-fastened piece 110 (such as the motor spindle), the cylindrical structure is deformed to a certain extent due to the screwing of the anti-loose quick-change nut, and then a friction force is generated between the surface of the cylindrical structure facing the motor spindle and the motor spindle. After the angle grinder is powered off, the anti-loosening quick-change nut can be prevented from being loosened by self through the friction force, and the anti-loosening performance of the anti-loosening quick-change nut is further improved.

The connection manner between the columnar structure and the mounting portion 124 is not limited to this. Alternatively, the post structure may snap into engagement with the mounting portion 124 or be attached by fasteners.

It should be noted that the structure of the auxiliary anti-loosening structure 130 is not limited thereto. Optionally, the auxiliary anti-loose structure 130 is a hemisphere.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

the anti-loosening structure of the anti-loosening quick-change nut is arranged on the screwing assembly and faces one side of the to-be-fastened piece, so that the friction force between the screwing assembly and the to-be-fastened piece is increased, the anti-loosening quick-change nut is prevented from rotating relative to the to-be-fastened piece to influence the screwing effect, the anti-loosening effect of the anti-loosening quick-change nut is improved, and the problems that in the prior art, the anti-loosening performance of the anti-loosening quick-change nut is poor and the personal safety of workers. When the anti-loosening quick nut needs to be disassembled, the screwing assembly is operated and is in a rotation stopping state, the screwing assembly can drive the nut assembly to rotate together, and then a worker can disassemble the nut assembly by rotating the screwing assembly.

It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (12)

1. A locknut that changes rapidly, its characterized in that includes:

a nut assembly (10) having an internal thread (11);

the screwing assembly (20) comprises a sleeving structure (21) and a separating structure (22), the sleeving structure (21) is sleeved outside the nut assembly (10), the separating structure (22) is detachably connected with the sleeving structure (21) and is positioned in the sleeving structure (21), the separating structure (22) is in rotation stopping connection with the nut assembly (10) so that the screwing assembly (20) has a rotation stopping state which is static relative to the nut assembly (10), and when the screwing assembly (20) is in the rotation stopping state, the screwing assembly (20) can drive the nut assembly (10) to rotate together;

a loosening prevention structure (100) provided on a side of the screw assembly (20) facing a member to be fastened (110) to increase a frictional force between the screw assembly (20) and the member to be fastened (110); wherein the anti-loosening structure (100) is made of a friction material.

2. The anti-loose quick-change nut according to claim 1, characterized in that the anti-loose structure (100) is bonded or clamped with the sleeved structure (21) or connected by a fastener.

3. The anti-loose quick-change nut according to claim 1, characterized in that the sheathing structure (21) is a first annular structure and the anti-loose structure (100) is a second annular structure, the first and second annular structures being coaxially arranged.

4. The lock quick-change nut according to claim 1, characterized in that said nut assembly (10) has a rotation stop (121) axially disposed along it, said lock quick-change nut further comprising:

the cover plate (60) is sleeved outside the rotation stopping section (121) and is in rotation stopping fit with the rotation stopping section (121), and the cover plate (60) is covered on the separation structure (22); wherein the anti-loosening structure (100) is arranged to avoid the cover plate (60).

5. The anti-loose quick-change nut according to claim 1, characterized in that the nut assembly (10) comprises a nut body (12), the nut body (12) having a through hole (123) and a mounting portion (124) communicating with the through hole (123), an inner wall of the through hole (123) having the internal thread (11), the anti-loose quick-change nut further comprising:

and the auxiliary anti-loosening structure (130) is arranged in the mounting part (124), and the auxiliary anti-loosening structure (130) is in contact with the to-be-fastened piece (110) which is arranged in the through hole (123) in a penetrating way so as to increase the friction force between the anti-loosening quick-change nut and the to-be-fastened piece (110) and prevent the anti-loosening quick-change nut from rotating relative to the to-be-fastened piece (110).

6. The anti-loose quick-change nut according to claim 5, characterized in that the mounting portion (124) is an annular groove, and the auxiliary anti-loose structure (130) is a third annular structure extending into the annular groove to be bonded with a groove wall of the annular groove.

7. The anti-loose quick-change nut according to claim 5, characterized in that the auxiliary anti-loose structure (130) comprises a clamping section (131) and a conical section (132) which are connected in sequence, and the size of the conical section (132) is gradually increased along the direction from the clamping section (131) to the conical section (132); the conical section (132) is connected with the mounting part (124) so as to connect the auxiliary anti-loosening structure (130) with the nut body (12), and the clamping section (131) is connected with the fastener (110) to be clamped in the through hole (123).

8. The lock quick-change nut according to claim 7, characterized in that the mounting portion (124) is a groove-like structure adapted to the outer surface of the tapered section (132), and the tapered section (132) is clamped or bonded to the groove-like structure or connected by a fastener.

9. The anti-loose quick-change nut according to claim 7, characterized in that the clamping section (131) comprises a plurality of clamping sub-sections arranged at intervals along the circumference of the conical section (132), each clamping sub-section extending towards the via hole (123).

10. The anti-loose quick-change nut according to claim 5, characterized in that the mounting portion (124) is a blind hole, and the auxiliary anti-loose structure (130) is a columnar structure, and the columnar structure extends into the blind hole; wherein, the columnar structure is connected with the installation part (124) in a clamping or bonding mode or through a fastening piece.

11. The anti-loose quick-change nut according to claim 5, characterized in that the maximum distance between the surface of the auxiliary anti-loose structure (130) facing the through hole (123) and the central axis of the through hole (123) is smaller than the distance between the crests of the internal thread (11) and the central axis of the through hole (123).

12. The anti-loose quick-change nut according to claim 5, characterized in that the auxiliary anti-loose structure (130) is made of a friction material.

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