CN108506318B

CN108506318B - Quick nut

Info

Publication number: CN108506318B
Application number: CN201810345181.XA
Authority: CN
Inventors: 张吉祥; 林鹏
Original assignee: Shandong Weida Machinery Co Ltd
Current assignee: Shandong Weida Machinery Co Ltd
Priority date: 2018-04-17
Filing date: 2018-04-17
Publication date: 2024-08-13
Anticipated expiration: 2038-04-17
Also published as: CN108506318A

Abstract

The invention provides a quick nut. The quick nut includes: a nut assembly having internal threads; the screwing assembly comprises a sleeved structure and a separation structure, the separation structure is detachably connected with the sleeved structure and is located in the sleeved structure, the separation structure is in rotation-stopping connection with the nut assembly, so that the screwing assembly is in a rotation-stopping state 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 invention effectively solves the problems of complex and tedious disassembly of the lock nut, increased labor intensity of staff and time consuming disassembly in the prior art.

Description

Quick nut

Technical Field

The invention relates to the technical field of fasteners, in particular to a quick nut.

Background

At present, the nut is applied to various occasions in the mechanical field, and can achieve the purposes of connection and screwing. However, for the lock nut of the saw blade lock nut of the cutting saw and the lock nut of the angle grinder grinding wheel, because the saw blade and the grinding wheel are required to be fastened and connected with the main machine in the operation process, the lock nut is screwed tightly, and a special tool is required to be used for disassembling the lock nut, so that the disassembly of the lock nut is complex and tedious, the labor intensity of workers is increased, the time consumption of the disassembly is increased, and the working efficiency of the workers is influenced.

Disclosure of Invention

The invention mainly aims to provide a quick nut so as to solve the problems that in the prior art, the disassembly of a locking nut is complex and tedious, the labor intensity of workers is increased, and the disassembly is time-consuming.

In order to achieve the above object, the present invention provides a quick nut comprising: a nut assembly having internal threads; the screwing assembly comprises a sleeved structure and a separation structure, the separation structure is detachably connected with the sleeved structure and is located in the sleeved structure, the separation structure is in rotation-stopping connection with the nut assembly, so that the screwing assembly is in a rotation-stopping state 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.

Further, the sleeving structure is clamped or fastened with the separation structure.

Further, the separation structure is provided with a first clamping part, the sleeving structure is provided with a second clamping part, and the first clamping part is clamped with the second clamping part so as to realize connection between the sleeving structure and the separation structure.

Further, the number of the first clamping parts is one or more, and when the number of the first clamping parts is multiple, the first clamping parts are arranged at intervals along the circumferential direction of the separation structure; the second clamping portions are one or more, when the second clamping portions are multiple, the second clamping portions are arranged at intervals along the circumferential direction of the sleeving structure, and the second clamping portions are arranged corresponding to the first clamping portions.

Further, the first clamping portion is a first extending portion extending along the radial direction of the separation structure, the second clamping portion is a groove arranged along the axial direction of the sleeving structure, the groove depth of the groove is smaller than the thickness of the sleeving structure, and part of the first extending portion extends into the groove and is in butt joint with the groove bottom of the groove.

Further, the separation structure comprises a separation body and a first extension part extending along the radial direction of the separation body, and a mounting gap is formed between the outer edge of the separation body and the inner wall of the sleeving structure.

Further, at least one notch is provided at the outer edge of the separator body.

Further, the number of the first extending parts is multiple, the number of the notches is consistent with that of the first extending parts, and the notches are in one-to-one correspondence with the first extending parts and are located on the same side of the first extending parts.

Further, the nut assembly includes: the nut body is provided with an internal thread and at least one mounting hole; the nut frame is coaxially arranged with the nut body and is provided with at least one second extension part, and the second extension part stretches into the mounting hole so as to connect the nut body and the nut frame together; the retainer is arranged in the nut frame and is abutted against the nut body, the retainer is provided with a plurality of roller holes arranged along the circumferential direction of the retainer, the side surface of the retainer, which is far away from the nut body, is provided with at least one third extension part, the third extension part extends out of the notch, the retainer is provided with a first position and a second position relative to the screwing assembly, and when the third extension part is limited by the stop of the first extension part, the retainer is positioned at the first position; the rollers are correspondingly arranged in the roller holes, the side face, facing the retainer, of the separation structure is provided with a plurality of roller grooves, and the retainer is in the second position when at least one roller enters at least one roller groove on the separation structure in the process of rotating the sleeving structure.

Further, the nut frame, the retainer and all the rollers are located between the nut body and the separation structure, the side surface of the nut frame facing the separation structure is provided with at least one fourth extension part, and the fourth extension part stretches into the installation gap so that an accommodating space is formed between the at least one fourth extension part and the corresponding first extension part, and the quick nut further comprises: at least one restoring member is provided in the accommodation space, the restoring member providing a restoring force to the first extension portion to a side remote from the fourth extension portion, and/or the restoring member providing a restoring force to the fourth extension portion to a side remote from the first extension portion.

Further, the quick nut further comprises: the pressing plate is pressed on the separation structure and is provided with at least one fifth extension part, and part of the fifth extension part stretches into the groove and is abutted with the separation structure.

Further, the quick nut further comprises: the first locking piece is pressed on the pressing plate and is in interference fit with the sleeving structure, so that the pressing plate and the separation structure are prevented from falling out of the sleeving structure.

Further, the nut assembly has a rotation stopping section disposed along an axial direction thereof, the rotation stopping section having a clamping groove, and the quick nut further comprises: the cover plate is sleeved outside the rotation stopping section and is in rotation stopping fit with the rotation stopping section, and the cover plate is covered on the pressing plate; the second locking piece is arranged in the clamping groove, and the second locking piece and the pressing plate are respectively positioned at two sides of the cover plate.

Further, the first locking piece is a clamp spring.

Further, the second locking piece is a clamp spring.

By applying the technical scheme of the invention, the quick nut comprises a nut component and a screwing component. Wherein the nut assembly has internal threads. The screwing assembly comprises a sleeved structure and a separation structure, the separation structure is detachably connected with the sleeved structure and is located in the sleeved structure, the separation structure is in rotation-stopping connection with the nut assembly, so that the screwing assembly is in a rotation-stopping state 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. Thus, the separation structure of the screwing assembly is in rotation-stopping connection with the nut assembly, and the separation structure is detachably connected with the sleeved structure sleeved outside the separation structure. When the quick nut is required 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 not only disassemble the nut assembly by rotating the screwing assembly.

Compared with the prior art that a special tool is needed for disassembling the quick nut, the quick nut can be disassembled without tools, and further the problems that the disassembly of the locking nut is complex and complicated, the labor intensity of workers is increased, and the time consumption of the disassembly is increased in the prior art are solved, so that the disassembly of the quick nut by the workers is simpler and easier.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

Fig. 1 shows a schematic exploded view of an embodiment of a quick nut according to the invention;

FIG. 2 shows a cross-sectional view of the quick nut of FIG. 1;

FIG. 3 shows a schematic perspective view of the screwing assembly of the quick nut of FIG. 1;

FIG. 4 shows a schematic perspective view of another angle of the screw assembly of FIG. 3;

FIG. 5 shows a schematic perspective view of the separation structure of the screw assembly of FIG. 3;

FIG. 6 is a schematic perspective view showing a sheathing structure of the screw assembly of FIG. 3;

FIG. 7 shows a schematic perspective view of the press plate of the quick nut of FIG. 1;

FIG. 8 is a schematic perspective view of the quick nut of FIG. 1 with the cover plate removed;

FIG. 9 is a schematic perspective view of the nut assembly, the screw assembly and the reset member of the quick nut of FIG. 1;

FIG. 10 is a schematic perspective view of the nut assembly of the quick nut of FIG. 1 assembled with a spacer structure;

FIG. 11 shows a schematic perspective view of the nut assembly of the quick nut of FIG. 1;

FIG. 12 is a schematic perspective view showing the assembled cage and rollers of the nut assembly of FIG. 11;

FIG. 13 is a schematic perspective view showing the assembled nut body and nut frame of the nut assembly of FIG. 11;

fig. 14 is a perspective view showing a nut frame of the nut assembly of fig. 13; and

Fig. 15 is a perspective view showing a nut body of the nut assembly of fig. 13.

Wherein the above figures include the following reference numerals:

10. A nut assembly; 11. an internal thread; 12. a nut body; 121. a rotation stopping section; 122. a mounting hole; 13. a nut frame; 131. a second extension; 132. a fourth extension; 14. a retainer; 141. a roller hole; 142. a third extension; 15. a roller; 20. screwing the assembly; 21. a sleeving structure; 211. a second clamping part; 22. a partition structure; 221. a first clamping part; 222. a roller groove; 223. a notch; 30. a reset member; 40. a pressing plate; 41. a fifth extension; 50. a first locking member; 60. a cover plate; 70. a second locking member; 80. a bearing; 90. and (3) sealing rings.

Detailed Description

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

It is noted that 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 unless otherwise indicated.

In the present invention, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used generally with respect to the orientation shown in the drawings or to the vertical, vertical or gravitational orientation; also, for ease of understanding and description, "left, right" is generally directed to the left, right as shown in the drawings; "inner and outer" refer to inner and outer relative to the outline of the components themselves, but the above-described orientation terms are not intended to limit the present invention.

The application provides a quick nut, which aims at solving the problems that the disassembly of a locking nut is complex and tedious in the prior art, the labor intensity of workers is increased, and the disassembly is time-consuming.

As shown in fig. 1 to 6, the quick nut includes a nut assembly 10 and a screw assembly 20. Wherein the nut assembly 10 has an internal thread 11. The screwing assembly 20 comprises a sleeving structure 21 and a separation structure 22, the separation structure 22 is detachably connected with the sleeving structure 21 and is located in the sleeving structure 21, the separation 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.

By applying the technical scheme of the embodiment, the separation structure 22 of the screwing assembly 20 is in rotation-stopping connection with the nut assembly 10, and the separation structure 22 is detachably connected with the sleeving structure 21 sleeved outside the separation structure 22. When the quick nut is required to be disassembled, the screwing assembly 20 is operated and 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.

Compared with the prior art that special tools are needed for disassembling the quick nut, the quick nut in the embodiment can be disassembled without tools, and further the problems that in the prior art, the disassembly for the locking nut is complex and complicated, the labor intensity of workers is increased, and the time consumption for disassembly of the quick nut is increased are solved, so that the disassembly of the quick nut by the workers is simpler and easier.

In this embodiment, the screwing assembly 20 is composed of the detachably connected sleeving structure 21 and the separating structure 22, so that the screwing assembly 20 is easier and simpler to process and manufacture, and the processing cost of the screwing assembly 20 is reduced. Meanwhile, the split structure increases the impact resistance of the screwing assembly 20, improves the structural strength of the screwing assembly 20, and prolongs the service life of the screwing assembly.

In this embodiment, the quick nut is mainly applied to an angle grinder with a grinding wheel diameter of 115-240 mm.

In this embodiment, the sleeving structure 21 is clamped with the separating structure 22. Therefore, the connecting mode can prevent the sleeving structure 21 from moving relative to the separating structure 22, so that the sleeving structure 21 and the separating structure are easier and simpler to install or detach, and the labor intensity of workers is reduced.

In other embodiments not shown in the drawings, the sheathing structure is fastened to the partition structure. Specifically, the sleeving structure and the separation structure are connected together through screws, so that the mounting or dismounting of the sleeving structure and the separation structure is easier and simpler, and the labor intensity of staff is reduced.

As shown in fig. 5 and 6, the partition structure 22 has a first clamping portion 221, the sleeve structure 21 has a second clamping portion 211, and the first clamping portion 221 is clamped with the second clamping portion 211 to connect the sleeve structure 21 and the partition structure 22. In this way, the first clamping portion 221 and the second clamping portion 211 are clamped, so that the partition structure 22 and the sleeving structure 21 are connected together to form the screwing assembly 20. The structure is simple and easy to process and realize.

Alternatively, the number of the first clamping parts 221 is one or more, and when the number of the first clamping parts 221 is multiple, the first clamping parts 221 are arranged at intervals along the circumferential direction of the separation structure 22; the number of the second clamping portions 211 is one or more, when the number of the second clamping portions 211 is multiple, the second clamping portions 211 are arranged at intervals along the circumferential direction of the sleeving structure 21, and the second clamping portions 211 are arranged corresponding to the first clamping portions 221. As shown in fig. 3 to 6, the number of the first clamping portions 221 is three, and the three first clamping portions 221 are disposed at intervals along the circumferential direction of the partition structure 22. The number of the second clamping portions 211 is three, and the three second clamping portions 211 are arranged at intervals along the circumferential direction of the sleeving structure 21, and the three second clamping portions 211 are arranged corresponding to the three first clamping portions 221. The structure is simple and easy to process.

Specifically, the separation structure 22 is a circular plate structure, the sleeving structure 21 is a circular ring structure, and three first clamping parts 221 of the separation structure 22 are correspondingly clamped with three second clamping parts 211 of the sleeving structure 21, so as to realize connection of the separation structure 22 and the sleeving structure 21.

The number of the first engaging portions 221 and the second engaging portions 211 is not limited thereto, and the number of the two may be different. Alternatively, the number of the first clamping portions 221 is three, and the number of the second clamping portions 211 is six. Thus, the above arrangement makes the connection position of the partition structure 22 and the sleeving structure 21 flexible, and reduces the labor intensity of workers.

As shown in fig. 3 to 6, the first clamping portion 221 is a first extending portion extending along a radial direction of the separation structure 22, the second clamping portion 211 is a groove disposed along an axial direction of the sleeving structure 21, a groove depth of the groove is smaller than a thickness of the sleeving structure 21, and a part of the first extending portion extends into the groove and abuts against a groove bottom of the groove. Specifically, the groove is not a communication groove, and after the first clamping portion 221 extends into the groove, the first clamping portion 221 abuts against the bottom of the groove, so as to clamp the separation structure 22 in the sleeving structure 21.

As shown in fig. 3 and 4, the partition structure 22 includes a partition body and a first extension extending in a radial direction of the partition body, and an installation gap is formed between an outer edge of the partition body and an inner wall of the sheathing structure 21. Like this, above-mentioned setting guarantees to separate the body and overlap to establish the inner wall of structure 21 between have the clearance, can hold other structures in this clearance, and then makes quick nut's inner structure compacter, occupies the volume less, conveniently carries.

Optionally, at least one notch 223 is provided at the outer edge of the separator body. Thus, the arrangement ensures that the separation body cannot interfere with the nut assembly 10 in a structural manner, and the quick nut can be used normally.

Optionally, the number of the first extending portions is multiple, the number of the notches 223 is identical to that of the first extending portions, and the notches 223 are in one-to-one correspondence with the first extending portions and are located on the same side of the first extending portions. As shown in fig. 5, the number of the first extending portions is three, the number of the notches 223 is the same as that of the first extending portions, and the three notches 223 are in one-to-one correspondence with the three first extending portions and are located on the same side of the first extending portions. The structure is simple and easy to process and realize.

As shown in fig. 2, 11 to 15, the nut assembly 10 includes a nut body 12, a nut frame 13, a cage 14, and a plurality of rollers 15. The nut body 12 has an internal thread 11 and at least one mounting hole 122. The nut frame 13 is coaxially disposed with the nut body 12, and the nut frame 13 has at least one second extension 131, and the second extension 131 extends into the mounting hole 122 to connect the nut body 12 and the nut frame 13 together. The cage 14 is disposed in the nut frame 13 and abuts against the nut body 12, the cage 14 has a plurality of roller holes 141 disposed along a circumferential direction thereof, a side surface of the cage 14 away from the nut body 12 has at least one third extension 142, the third extension 142 protrudes from the notch 223, the cage 14 has a first position and a second position with respect to the screwing assembly 20, and the cage 14 is in the first position when the third extension 142 is stopped by the first extension. The plurality of rollers 15 are correspondingly disposed in the plurality of roller holes 141, and the side of the partition structure 22 facing the cage 14 has a plurality of roller grooves 222, and the cage 14 is in the second position when at least one roller 15 enters at least one roller groove 222 on the partition structure 22 during rotation of the sleeve structure 21. The structure is simple and easy to process.

Specifically, the quick nut in the embodiment is mainly applied to the main shaft of the main machine of the grinding wheel of the angle grinder. The nut body 12 and the nut frame 13 rotate synchronously, and the retainer 14 can rotate relative to the nut body 12 and the nut frame 13 and has a stop position therebetween, i.e. the rotation angle of the retainer 14 is limited. The plurality of rollers 15 are disposed in a corresponding plurality of roller holes 141 in the cage 14 and are rotatable within the roller holes 141. When the quick nut is required to be screwed into the main shaft, the sleeve structure 21 is rotated anticlockwise, the separation structure 22 rotates along with the sleeve structure 21, so that the first extension part of the separation structure 22 is in stop fit with the third extension part 142 of the retainer 14, and the retainer 14 is in 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 main shaft of the host; when the quick nut is required to be screwed out from the main shaft of the host machine, the sleeve structure 21 is rotated clockwise, and the nut assembly 10 cannot rotate due to the large acting force between the nut assembly 10 and the main shaft, the sleeve structure 21 drives the separation structure 22 to rotate clockwise until the roller 15 enters the roller groove 222 on the separation structure 22, the retainer 14 is in the second position, so that the force in the axial direction of the quick nut disappears, and the friction force between the nut assembly 10 and the main shaft also disappears. And then, continuing to rotate the sleeving structure 21, so that the sleeving structure 21 drives the nut assembly 10 to rotate until the nut assembly is unscrewed from the main shaft.

In this embodiment, the nut body 12 is provided with three hole structures for preventing the quick nut from being removed by hand in an unexpected situation.

As shown in fig. 9 to 11, the nut frame 13, the retainer 14 and all the rollers 15 are located between the nut body 12 and the separation structure 22, the side of the nut frame 13 facing the separation structure 22 has at least one fourth extension 132, and the fourth extension 132 extends into the installation gap, so that an accommodating space is formed between the at least one fourth extension 132 and the corresponding first extension, and the quick nut further includes at least one reset member 30. Wherein the restoring member 30 is disposed in the accommodating space, the restoring member 30 provides the first extension portion with a restoring force to move to a side away from the fourth extension portion 132 (or the restoring member 30 provides the fourth extension portion 132 with a restoring force to move to a side away from the first extension portion). Therefore, the relative positions of the nut assembly 10 and the screwing assembly 20 are reset through the resetting piece 30, so that a worker can quickly screw the quick nut into the main shaft of the host machine when reusing the quick nut, and assembly time is shortened. Meanwhile, the above arrangement of the reset member 30 makes the acting force between the nut assembly 10 and the screwing assembly 20 more gentle, and prevents the nut assembly 10 from generating larger impact force in the moment of rotation to affect the service life of the quick nut.

Specifically, the reset element 30 is located in the accommodating space formed by the first extending portion of the separation structure 22 and the fourth extending portion 132 of the nut frame 13, and one end of the reset element abuts against the first extending portion of the separation structure 22, and the other end abuts against the fourth extending portion 132 of the nut frame 13. In the initial state of the quick nut, under the action of the reset force of the reset piece 30, the first extension part of the separation structure 22 and the third extension part 142 of the retainer 14 are limited by stopping, and a worker only needs to rotate the sleeve structure 21 anticlockwise so as to screw the quick nut into the main shaft; when the quick nut is required to be screwed out from the spindle, the sleeve structure 21 is rotated clockwise, the sleeve structure 21 drives the separation structure 22 to rotate clockwise, and the reset piece 30 is gradually compressed until the roller 15 enters the roller groove 222 on the separation structure 22. Then, the sleeve structure 21 is continuously rotated, a certain reset force exists between the sleeve structure 21 and the nut frame 13, so that the rotation of the nut frame 13 and the nut body 12 is more gentle, and the rotation impact of the nut assembly 10 and the vibration and noise generated by the impact effect are reduced.

Optionally, the return member 30 is a spring.

As shown in fig. 7 and 8, the quick nut also includes a pressure plate 40. The pressing plate 40 is pressed on the partition structure 22, and the pressing plate 40 has at least one fifth extension 41, and a portion of the fifth extension 41 extends into the groove and abuts against the partition structure 22. In this way, the partition structure 22 is located between the pressing plate 40 and the retainer 14, so that on the 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 force between the partition structure 22 and the cage 14 can be increased, ensuring that the first extension of the partition structure 22 can be in a stop fit with the third extension 142 of the cage 14.

As shown in fig. 8, the quick nut further includes a first retaining member 50. The first locking member 50 is pressed on the pressing plate 40 and is in interference fit with the sleeving structure 21, so as to prevent the pressing plate 40 and the separation structure 22 from being separated from the sleeving structure 21. Thus, the above arrangement can prevent the pressing plate 40 from being separated from the sheathing structure 21, and improve the structural stability of the quick nut.

As shown in fig. 2, the nut body 12 of the nut assembly 10 has a rotation stopping section 121, the rotation stopping section 121 has a clamping groove, and the quick nut further includes a cover plate 60 and a second locking member 70. 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 pressing plate 40. The second locking member 70 is disposed in the clamping groove, and the second locking member 70 and the pressing plate 40 are respectively located at two sides of the cover plate 60. In this way, the cover plate 60 is fastened and connected with the nut assembly 10 through the second locking member 70, so that the cover plate 60 is prevented from being separated from the nut assembly 10, and the structural stability of the quick nut is improved.

Specifically, the cover plate 60 contacts the surface of the fastened structure (e.g., grinding wheel), and during operation of the angle grinder, the friction between the cover plate 60 and the grinding wheel increases gradually, with a large axial force therebetween. When the quick nut needs to be screwed out, the sleeve structure 21 is rotated clockwise, so that the axial force between all parts in the quick nut disappears, the friction force between the cover plate 60 and the grinding wheel becomes zero, and a worker can screw out the quick nut from the main machine main shaft of the angle grinder by hands.

Alternatively, the cover plate 60 is made by powder metallurgy.

Optionally, the sleeving structure 21 is made of carbon structural steel material and is subjected to heat treatment. In this way, the above arrangement can improve the structural strength of the sheathing structure 21.

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

It should be noted that the types of the first locking member 50 and the second locking member 70 are not limited thereto. Optionally, the first locking member 50 is an elastic pad, and the second locking member 70 is a snap spring.

As shown in fig. 2 and 8, the quick nut also includes a bearing 80. Wherein the bearing 80 is disposed between the cover plate 60 and the partition structure 22. Thus, under the condition that the screwing assembly 20 applies a large axial force to the cover plate 60 in the quick nut, the rolling friction force is only needed to be overcome on both sides, so that the quick nut is more time-saving and labor-saving for the workers to detach.

In this embodiment, the partition structure 22 and the pressing plate 40 are fixed on the sleeving structure 21 by the first locking member 50, and the screwing assembly 20 is not in a split structure, so that the processing difficulty of the screwing assembly 20 is reduced. As shown in fig. 1 and 2, the quick nut further includes a seal ring 90 disposed between the pressure plate 40 and the cover plate 60. The seal ring 90 not only seals the pressure plate, but also dampens the nut assembly 10.

In this embodiment, the method of using the quick nut is as follows:

The grinding wheel is arranged on a backing plate of a main shaft of the angle grinder, the cover plate 60 of the quick nut faces the grinding wheel, the sleeve structure 21 of the quick nut rotates anticlockwise to compress the grinding wheel, and the angle grinder is ready for work. When the work is finished or the grinding wheel needs to be replaced, the spindle locking button is pressed, the sleeve structure 21 of the quick nut is held by hands, and the quick nut can be loosened and selected by rotating clockwise.

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

The separation structure of the screwing component is in rotation-stopping connection with the nut component, and the separation structure is detachably connected with the sleeved structure sleeved outside the separation structure. When the quick nut is required 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 not only disassemble the nut assembly by rotating the screwing assembly.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the 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 exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated 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 the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A quick nut, comprising:

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

The screwing assembly (20), the screwing assembly (20) comprises a sleeving structure (21) and a separation structure (22), the separation structure (22) is detachably connected with the sleeving structure (21) and is positioned in the sleeving structure (21), the separation 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 partition structure (22) comprises a partition body having at least one notch (223) at an outer edge thereof;

wherein the nut assembly (10) comprises:

a nut body (12);

A nut frame (13) coaxially arranged and connected with the nut body (12);

A cage (14), the side of the cage (14) remote from the nut body (12) having at least one third extension (142), the third extension (142) protruding from the notch (223);

A plurality of rollers (15).

2. The quick nut according to claim 1, characterized in that the sheathing structure (21) is clamped or fastened to the separating structure (22).

3. The quick nut according to claim 2, characterized in that the separation structure (22) has a first clamping portion (221), the sheathing structure (21) has a second clamping portion (211), and the first clamping portion (221) is clamped with the second clamping portion (211) so as to realize connection of the sheathing structure (21) and the separation structure (22).

4. A quick nut as defined in claim 3, characterized in that,

One or more first clamping parts (221) are arranged, and when the number of the first clamping parts (221) is multiple, the first clamping parts (221) are arranged at intervals along the circumferential direction of the separation structure (22);

the number of the second clamping parts (211) is one or more, when the number of the second clamping parts (211) is multiple, the second clamping parts (211) are arranged at intervals along the circumferential direction of the sleeving structure (21), and the second clamping parts (211) are correspondingly arranged with the first clamping parts (221).

5. A quick nut according to claim 3, characterized in that the first clamping portion (221) is a first extension portion extending along a radial direction of the separation structure (22), the second clamping portion (211) is a groove arranged along an axial direction of the sleeving structure (21), a groove depth of the groove is smaller than a thickness of the sleeving structure (21), and a part of the first extension portion extends into the groove and abuts against a groove bottom of the groove.

6. The quick nut according to claim 5, characterized in that the separation structure (22) further comprises the first extension extending in a radial direction of the separation body, an installation gap being formed between an outer edge of the separation body and an inner wall of the nesting structure (21).

7. The quick nut as claimed in claim 6, characterized in that said first extension is a plurality of said notches (223) being identical in number to said first extension, said plurality of notches (223) being in one-to-one correspondence with and on the same side of said first extension as said plurality of first extensions.

8. The quick nut according to claim 6, characterized in that said nut body (12) has said internal thread (11) and at least one mounting hole (122), said nut frame (13) having at least one second extension (131), said second extension (131) protruding into said mounting hole (122) to connect said nut body (12) with said nut frame (13); the retainer (14) is arranged in the nut frame (13) and is abutted against the nut body (12), the retainer (14) is provided with a plurality of roller holes (141) arranged along the circumference of the retainer, the retainer (14) is provided with a first position and a second position relative to the screwing assembly (20), and when the third extension part (142) is limited by the first extension part, the retainer (14) is positioned at the first position; the rollers (15) are correspondingly arranged in the roller holes (141), the side of the separation structure (22) facing the retainer (14) is provided with a plurality of roller grooves (222), and the retainer (14) is in the second position when at least one roller (15) enters at least one roller groove (222) on the separation structure (22) in the process of rotating the sleeving structure (21).

9. The quick nut according to claim 8, characterized in that the nut frame (13), the cage (14) and all the rollers (15) are located between the nut body (12) and the separation structure (22), the side of the nut frame (13) facing the separation structure (22) having at least one fourth extension (132), the fourth extension (132) protruding into the mounting gap such that a receiving space is formed between at least one of the fourth extensions (132) and the respective first extension, the quick nut further comprising:

at least one restoring element (30) is arranged in the accommodating space, wherein the restoring element (30) provides restoring force for the first extension part to move towards the side far away from the fourth extension part (132), and/or the restoring element (30) provides restoring force for the fourth extension part (132) to move towards the side far away from the first extension part.

10. The quick nut of claim 5, the quick nut is characterized by further comprising:

the pressing plate (40) is pressed on the separation structure (22), the pressing plate (40) is provided with at least one fifth extension part (41), and part of the fifth extension part (41) stretches into the groove and is abutted with the separation structure (22).

11. The quick nut of claim 10, the quick nut is characterized by further comprising:

the first locking piece (50) is pressed on the pressing plate (40) and is in interference fit with the sleeving structure (21), so that the pressing plate (40) and the separation structure (22) are prevented from being separated from the sleeving structure (21).

12. The quick nut of claim 10, characterized in that the nut assembly (10) has a rotation stop section (121) disposed axially thereof, the rotation stop section (121) having a clamping groove, the quick 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 pressing plate (40);

the second locking piece (70) is arranged in the clamping groove, and the second locking piece (70) and the pressing plate (40) are respectively positioned on two sides of the cover plate (60).

13. The quick nut of claim 11, characterized in that said first locking member (50) is a snap spring.

14. The quick nut of claim 12, characterized in that said second locking member (70) is a snap spring.