Quick mounting nut

Abstract

The utility model provides a quick installation nut which comprises a body and a movable part. The body is provided with a sleeve-shaped first screwing part, and local first internal threads are arranged on the inner wall of the first screwing part; the movable piece is pivoted to the body through a shaft and can rotate between an opening position and a closing position, and local second inner threads are arranged on the inner wall of an arc-shaped block-shaped second screwing portion of the movable piece. When the movable piece is located at the opening position, the abutting wall face of the movable piece protrudes out of the pressing wall face of the body, the second inner thread is far away from the first inner thread, and a screwing piece is allowed to rapidly pass through the space between the first inner thread and the second inner thread. When the movable part is in the closing position, the abutting wall face of the movable part is abutted to force the movable part to rotate, and meanwhile the second inner thread is close to the first inner thread and can be jointly meshed with the screwing part. Therefore, simple, rapid and firm installation operation can be realized.

Description

Technical Field

[0001] This utility model relates to a nut structure, and more particularly to a nut that allows for quick installation. Background Technology

[0002] Many devices, equipment, or accessories require the use of threaded components such as screws, bolts, or threaded tubes. These components often need to be fastened with nuts. However, in many cases, the nut must rotate a long distance on the component to achieve the locking effect, which leads to several problems. For example, the long engagement time reduces the efficiency of the installation operation. If the installation space is small, it is even more difficult to rotate the nut for a long distance, and it may even be difficult to apply force, thus affecting the reliability of the lock.

[0003] To address the shortcomings of traditional nuts, Chinese utility model patent CN 206738362 U discloses a quick-tightening nut to solve the aforementioned problems. This nut includes a nut body with a threaded hole and a through hole. The threaded hole has a vertical axis, while the through hole has an inclined axis. The threads of the threaded hole and the through hole are coplanar and form an acute angle. The through hole design removes part of the thread in the threaded hole. In use, tilting the threaded hole allows the screw to be quickly inserted into place through the through hole. Finally, the nut is straightened, and the nut body is locked onto the screw through the threaded hole. This achieves the effect of quick nut assembly.

[0004] However, the structural design of this nut still has some drawbacks. For example, the screw hole is completely enclosed within the nut body. Therefore, the internal threads on the inner surface of the screw hole cannot be integrally formed using a mold through drafting. Instead, the screw hole and internal threads must first be machined from metal, and then a through hole is formed by drilling to remove part of the internal threads. As a result, the metal processing of the internal threads and through holes is limited, and it is not possible to integrally mold them from plastic materials. This restricts the manufacturing efficiency and forces the use of expensive metal materials, making it impossible to reduce manufacturing and material costs.

[0005] Although the nut is designed with a through hole to avoid the external threads of the screw, allowing the screw to pass through quickly, the closed through hole design also restricts the space available for the screw to avoid it. This limits the tilt angle of the nut. Therefore, when the nut must be designed to be relatively slender, the closed through hole design cannot provide enough space for avoidance. As a result, even at the maximum tilt angle, the external threads of the screw may still bite and contact the internal threads of the screw hole, causing the nut to be unable to move smoothly on the screw after tilting. Thus, its application range will be greatly limited. Utility Model Content

[0006] The main purpose of this utility model is to provide a quick-installation nut that can achieve a simple, labor-saving, fast and reliable installation and locking effect. It can be used in particular for the installation and locking of various faucets, toilets and other bathroom equipment or accessories.

[0007] To achieve the above objectives, this utility model provides a quick-installation nut, comprising:

[0008] A body having a sleeve-shaped first threaded portion, the first threaded portion having a first inlet end and a first outlet end, a clamping wall connected to the first inlet end, a clamping wall surface formed on the clamping wall; a first threaded groove defined inside the first threaded portion, the body having a first side and a second side opposite to each other, a first internal thread formed on the first side at the first side, a first internal thread partially distributed along the circumferential direction;

[0009] A movable component, pivotally mounted on a pressing wall relative to the second side of the main body, and rotatable between an open position and a closed position, has an arc-shaped second threaded portion, the second threaded portion having a second inlet end and a second outlet end, the second inlet end being connected to a pressing wall, the pressing wall having a pressing wall surface formed thereon; the interior of the second threaded portion defines a second threaded groove, the inner surface of the second threaded groove having a second internal thread partially distributed along the circumferential direction corresponding to a first internal thread; the movable component in the open position... When in the open position, its abutting wall protrudes beyond the clamping wall of the body, and the second internal thread swings away from the first internal thread, allowing a threaded member to move rapidly along the axial direction of the body between the first and second internal threads in a non-engaged state; the abutting wall of the movable member can be abutted, causing the movable member to pivot from the open position to the closed position, while forcing the second internal thread to deflect closer to the first internal thread, thereby allowing the first and second internal threads to simultaneously engage with the external thread of the threaded member.

[0010] The quick-install nut has at least two lugs protruding from its exterior for turning operation.

[0011] The lug of the quick-install nut is connected between the outer peripheral wall of the first engagement part and the opposite part of the clamping wall.

[0012] The body of the quick-install nut has a lower notch and an upper notch respectively on its first threaded part and the clamping wall relative to the second side. The clamping wall surface of the clamping wall has a positioning groove on each of the two sides adjacent to the upper notch. Each positioning groove has a limiting groove on the end side away from the upper notch. The movable part has a positioning convex shaft protruding from each of the two sides of the wall that abuts against it. The convex shaft can be respectively embedded and pivotally connected to the corresponding positioning groove. The end of the positioning convex shaft has a limiting block protruding from it. The convex block can be respectively inserted into the corresponding limiting groove, thereby preventing the movable part from detaching from the body.

[0013] The body of the quick-install nut has a retaining block protruding from each of the two side walls of the clamping wall relative to the upper notch, and defines a first abutting surface and a second abutting surface; the two sides of the abutting wall of the movable part have an elastic block protruding from each of the two sides, which can abut against the first abutting surface respectively, thereby restricting and positioning the movable part in the open position, and can elastically slide through the corresponding retaining block, and be stopped and limited by the corresponding second abutting surface, thus restricting and positioning the movable part in the closed position.

[0014] The body of the quick-install nut has a first threaded portion with a stop protruding on each of the two side walls opposite the lower notch; the second threaded portion of the movable part has a groove protruding on each of its two sides, which can accommodate the corresponding stop blocks when the movable part is in the closed position, so that the movable part can be stopped and positioned in the closed position, while preventing the positioning convex shaft of the movable part from disengaging from the positioning groove of the body.

[0015] The movable part of the quick-install nut has a first upper surface and a second upper surface formed on the abutting wall to jointly define the abutting wall surface. The first upper surface can provide abutting force when the movable part is in the open position, and the second upper surface can provide abutting force when the movable part is in the closed position.

[0016] The body of the quick-install nut has a closed ring wall connecting the outer peripheral wall of the first engagement part to the corresponding part of the clamping wall. A portion of the closed ring wall is located at the lower notch, thereby isolating and hiding the second engagement part of the movable part inside.

[0017] The quick-install nut has at least two gripping surfaces formed on its closed ring wall for turning operations.

[0018] The body of the quick-install nut has a limiting groove formed on each of the two sides of the inner peripheral wall of the closed ring wall, which is opposite to the lower notch; each of the two sides of the second engagement part of the movable part is provided with a limiting block, which can be accommodated and limited in the corresponding limiting groove, so that the movable part can be restricted to pivot between the open position and the closed position.

[0019] The body of the quick-install nut has a first threaded portion that extends axially along the body at the first protruding end, and the outer surface of the gripping ring wall forms a gripping surface that allows for gripping and rotation.

[0020] The body of the quick-install nut has an annular recess formed on its clamping wall, and a clamping washer is nested in the annular recess. The outer surface of the clamping washer can define the clamping wall surface. The annular recess has a positioning groove on each of its two sides opposite to the second side. The movable part has a positioning convex shaft protruding from each of its two sides against the wall, which can be respectively embedded and pivotally connected to the respective positioning grooves.

[0021] The body of the quick-install nut has a first threaded portion and a clamping wall forming a positioning groove on the side opposite to the second side, which can accommodate the second threaded portion of the movable part; the clamping washer has an edge on the second side opposite to the body, which can jointly define a through-hole on the side of the positioning groove opposite to the first inlet end, allowing the opposite part of the movable part to extend through.

[0022] The quick-install nut body has a nut positioning groove recessed on each side of the bottom wall of its annular recess. The bottom wall of the nut positioning groove is further provided with a through hole along the axial direction of the body. Two nuts are respectively embedded and positioned in the nut positioning groove with restricted rotation. Each nut has a screw hole inside. Two clamping bolts are screwed from the first protruding end of the body to the first entering end through the corresponding through holes into the screw holes, so that the clamping washers can be abutted by the clamping bolts.

[0023] The quick-install nut body has a screw hole provided on each of the two sides of the bottom wall of the annular recess along the axial direction of the body; two clamping bolts are screwed into the corresponding screw holes from the first exit end to the first entry end of the body, so that the clamping washer can be abutted by the clamping bolts.

[0024] Under normal conditions, the movable part of the quick-install nut can naturally pivot and be positioned in the open position by its own weight.

[0025] Because the movable part of this nut is normally in the open position, the installer can quickly slip the nut onto the threaded part without tilting it until the abutting wall of the movable part is abutted and it automatically pivots to the closed position. The first internal thread in the nut body and the second internal thread in the movable part can then quickly engage with the threaded part. Therefore, a slight tightening is all that is needed to achieve a tight locking effect. As a result, the overall installation operation is quite simple, fast, and secure, and it can be performed with one hand.

[0026] Since the nut does not need to be installed at an angle, it is particularly suitable for the installation and locking of various bathroom equipment or accessories such as faucets or toilets. It can significantly shorten the engagement time of long threads and improve the ease of installation, while ensuring the reliability and durability of the installation and locking.

[0027] The nut is not a one-piece molded component, but is assembled from a body and a moving part. Therefore, the body and the moving part can be molded from plastic material through a mold, which makes the production and manufacturing simple and fast, and also has the advantages of being lightweight.

[0028] All nuts are designed with structures that make them easy for installers to hold and operate, such as the lugs, the gripping surface of the closed ring wall, or the gripping surface of the ring wall. Therefore, they can achieve the effect of easy gripping and rotation and labor-saving operation. Attached Figure Description

[0029] Figure 1 This is a perspective view of the nut in the open position according to the first embodiment of this utility model.

[0030] Figure 2 for Figure 1 A top-down plan view.

[0031] Figure 3 For along Figure 2 Sectional view of section line 1-1.

[0032] Figure 4 For along Figure 2 Sectional view of section line 2-2.

[0033] Figure 5 This is an exploded perspective view of the nut according to the first embodiment of this utility model.

[0034] Figure 6 This is a three-dimensional bottom view of the main body of the first embodiment of this utility model.

[0035] Figure 7 This is a perspective view of the movable part in the first embodiment of this utility model.

[0036] Figure 8 This is a perspective view of the nut in the closed position according to the first embodiment of this utility model.

[0037] Figure 9 For along Figure 8 A longitudinal sectional view of the middle section between the main body and the moving parts.

[0038] Figure 10 This is a partial exploded cross-sectional view of the first embodiment of the present invention, showing the nut applied to a first object and a second object.

[0039] Figure 11 This is a perspective view of the nut in the open position according to the second embodiment of this utility model.

[0040] Figure 12 For along Figure 11 A longitudinal sectional view of the middle section between the main body and the moving parts.

[0041] Figure 13 This is an exploded perspective view of the nut according to the second embodiment of this utility model.

[0042] Figure 14 for Figure 12 A longitudinal sectional view of the moving part in the closed position.

[0043] Figure 15 This is a perspective view of the nut in the closed position according to the third embodiment of this utility model.

[0044] Figure 16 for Figure 15 A top-down plan view.

[0045] Figure 17 This is an exploded perspective view of the nut according to the third embodiment of this utility model.

[0046] Figure 18 For along Figure 16 Sectional view of section line 3-3.

[0047] Figure 19 For along Figure 16 Sectional view of section line 4-4.

[0048] Figure 20 for Figure 18 A longitudinal sectional view of the movable part in the open position. Detailed Implementation

[0049] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0050] like Figures 1 to 5As shown, this utility model provides a first embodiment of a quick-installation nut 1, which can be screwed onto a threaded component, such as various types of bolts, screws, or threaded tubes, to quickly lock two objects together or together onto a third object. For example, as Figure 10 As shown, a first object 2 has a screw 2a at its bottom end, and a second object 3 has at least one mounting hole 3a through which the screw 2a can pass from top to bottom. The nut 1 can be quickly threaded onto the screw 2a and screwed onto the lower surface 3b of the second object 3, thereby forcing the lower surface 2b of the first object 2 to be tightly fixed to the upper surface 3c of the second object 3, thus quickly installing and locking the first object 2 onto the second object 3.

[0051] The first object 2 can be a common faucet assembly of various shapes or types, and its bottom end usually has at least one of the aforementioned screws 2a; the second object 3 can be a common sink or bathtub, etc., and the sink usually has at least one of the aforementioned mounting holes 3a.

[0052] The nut 1 in this embodiment includes a body 10 and a movable part 20; wherein:

[0053] This entity 10, such as Figures 3 to 6 As shown, the device has a first threaded portion 11 in the shape of a sleeve. The first threaded portion 11 has a first inlet end 111 and a first outlet end 112. A clamping wall 12 is connected to the first inlet end 111, and a clamping wall surface 121 is formed on the clamping wall 12. A first threaded groove 113 is defined inside the first threaded portion 11. The body 10 has a first side 101 and a second side 102 facing each other, as shown... Figure 3 As shown, the inner wall surface of the first threaded groove 113 has a first internal thread 114 partially distributed along the circumferential direction at the first side 101.

[0054] This activity item 20, such as Figure 7 As shown, the movable member 20 is pivotally mounted on the pressing wall 12 of the body 10 relative to the second side 102, and can rotate between an open position and a closed position. It has an arc-shaped second threaded portion 21, which has a second inlet end 211 and a second outlet end 212. A resisting wall 22 is connected to the second inlet end 211, and a resisting wall surface 221 is formed on the resisting wall 22. A second threaded groove 213 is defined inside the second threaded portion 21, and a second internal thread 214, partially distributed circumferentially, is formed on the inner surface of the second threaded groove 213 relative to the first internal thread 114. When the movable member 20 is in the open position, as... Figure 3As shown, its abutting wall 221 protrudes from the clamping wall 121 of the body 10, and the second internal thread 214 swings away from the first internal thread 214, allowing the screw 2a to move rapidly along the axial direction of the body 10 in a non-engaged state, passing between the first internal thread 114 and the second internal thread 214; the abutting wall 221 of the movable member 20 can be abutted, for example, it can be abutted against the lower surface 3b of the second object 3, causing the movable member 20 to pivot from the open position to the closed position, such as... Figure 8 , 9 As shown, the second internal thread 214 is forced to deflect closer to the first internal thread 114, thereby allowing the first internal thread 114 and the second internal thread 214 to simultaneously engage with the external thread of the screw 2a. At this time, the installer only needs to slightly rotate the body 10 in the tightening direction, and the abutting wall 221 of the body 10 can press against the lower surface 3b of the second object 3, and force the lower surface 2b of the first object 2 to press against the upper surface 3c of the second object 3, thereby quickly and reliably installing and locking the first object 2 onto the first object 3.

[0055] It is easily understood that when the movable part 20 is abutted from the open position and pivoted to the closed position, the abutting wall 221 on it does not protrude from the pressing wall 121 of the body 10, or is just flush with the pressing wall.

[0056] In this embodiment, as Figure 5 , 6 As shown, the body 10 has at least two lugs 13 protruding from its exterior, which can be rotated. In one possible embodiment, the lugs 13 are connected to the opposite portion of the outer peripheral wall 115 of the first engagement portion 11 and the clamping wall 12, for example, between the lower wall surface 122.

[0057] In this embodiment, as Figure 5 , 6As shown, the first threaded portion 11 of the body 10 and the clamping wall 12 have a lower notch 116 and an upper notch 123 respectively at the position relative to the second side 102. The clamping wall surface 121 of the clamping wall 12 has a positioning groove 124 recessed on each of the two sides adjacent to the upper notch 123. Each positioning groove 124 has a limiting groove 125 at the end side away from the upper notch 123. The movable member 20 has a positioning convex shaft 23 protruding on each of the two sides of the abutting wall 22, which can be respectively embedded and pivotally connected in the corresponding positioning groove 124. The end of the positioning convex shaft 23 further has a limiting block 231 protruding, which can be respectively inserted into the corresponding limiting groove 125, thereby restricting the movable member 20 from detaching from the body 10, while ensuring that the movable member 20 can pivot stably and smoothly on the body 10.

[0058] In this embodiment, the pressing wall 12 of the body 10 is further provided with a limiting block 126 on each of the two side walls opposite to the upper notch 123, and defines a first abutting surface 126a and a second abutting surface 126b, as shown. Figure 5 , 6 As shown; the movable part 20 has a spring-loaded locking block 24 protruding from each of its two sides against the top wall 22, as shown. Figure 7 As shown, the movable member 20 can be abutted against each of the opposite first abutting surfaces 126a to restrict and position it in the open position, and can be elastically slid through each of the opposite limiting blocks 126, and is stopped and limited by each of the opposite second abutting surfaces 126b to restrict and position it in the closed position.

[0059] In this embodiment, as Figure 5 , 7 As shown, the first threaded portion 11 of the body 10 has a stop 127 protruding from each of its two side walls relative to the lower notch 116; the second threaded portion 21 of the movable member 20 has a receiving groove 215 protruding from each of its two sides. When the movable member 20 is in the closed position, the corresponding stop 127 can be received and abutted within it, so that the movable member 20 can be stopped and positioned in the closed position, while preventing the positioning convex shaft 23 of the movable member 20 from disengaging from the positioning groove 124 of the body 10. Thus, this embodiment uses two technical means to prevent the movable member 20 from disengaging from the body 10. The first is to use the limiting blocks 231 of each positioning convex shaft 23 of the movable member 20 to be inserted and positioned in the limiting grooves 125 outside the positioning grooves 124 of the body 10. The second is to use the receiving grooves 215 of the movable member 20 to allow the stop 127 of the body 10 to be received and abutted within them.

[0060] In this embodiment, a first upper surface 222 and a second upper surface 223 are formed on the top wall 22 of the movable member 20, such as... Figures 7 to 9 As shown, the abutting wall surface 221 is defined by the first upper surface 222, which provides abutting force when the movable member 20 is in the open position, and the second upper surface 223, which provides abutting force when the movable member 20 is in the closed position. It is understood that the abutting wall surface 221 can have other configurations and is not limited to the configurations of the first upper surface 222 and the second upper surface 223 described above.

[0061] like Figures 11 to 14 As shown, this utility model further provides a second embodiment of a quick-install nut. The nut 1a in this embodiment is substantially the same as the nut 1 in the first embodiment, except that:

[0062] In this embodiment, a closed annular wall 14 connects the outer peripheral wall 115 of the first threaded portion 11 of the main body 10 with the corresponding portion of the clamping wall 12. A portion of the closed annular wall 14 is located at the lower notch 116, thereby isolating and concealing the second threaded portion 21 of the movable member 20 within it. This design prevents the installer from accidentally touching or malfunctioning the movable member 20 when rotating the nut 10.

[0063] In this embodiment, at least two gripping surfaces 141 are formed on the closed ring wall 14 for turning operation. Compared with the ear 13 in the first embodiment, the gripping surfaces 141 of the closed ring wall 14 are easier to grip and operate.

[0064] In this embodiment, the inner peripheral wall of the closed ring wall 14 of the main body 10 has a limiting groove 142 formed on each of the two sides opposite to the lower notch 116; the second threaded part 21 of the movable member 20 has a limiting block 25 protruding on each of the two sides, which can be accommodated and limited in the corresponding limiting groove 142, so that the movable member 20 can be restricted to pivot between the open position and the closed position.

[0065] like Figures 15 to 20 As shown, this utility model further provides a third embodiment of a quick-install nut. The nut 1b in this embodiment is substantially the same as the nut 1 in the first embodiment, with the only difference being:

[0066] In this embodiment, the first threaded portion 11 of the body 10 has a gripping ring wall 117 extending along the axial direction of the body 10 relative to the first protruding end 112. The outer surface of the gripping ring wall 117 forms a gripping surface 118 that can be gripped and rotated.

[0067] In this embodiment, an annular recess 128 is formed on the clamping wall 12 of the main body 10. A clamping washer 120 is nested in the annular recess 128. The outer surface of the clamping washer 120 can define the clamping wall surface 121. The annular recess 128 has a positioning groove 128a on each of its two sides relative to the second side 102, which can be pivotally fitted into the positioning protrusion 23 of the movable member 20 against the wall 22.

[0068] In this embodiment, the first threaded portion 11 of the body 10 and the clamping wall 12 form a positioning groove 100 at the location opposite to the second side 102, which can accommodate the second threaded portion 21 of the movable member 20; the clamping washer 120 forms a cutting edge 120a at the location opposite to the second side 102 of the body 10, which can jointly define a through opening 103 on the side of the positioning groove 100 opposite to the first entry end 111, allowing the opposite portion of the movable member 20 to extend through it.

[0069] In this embodiment, the bottom wall of the annular recess 128 of the main body 10 is recessed with a nut positioning groove 129 on each of its two sides. A through hole 129a is further provided on the bottom wall of each nut positioning groove 129 along the axial direction of the main body 10. Two nuts 15 are respectively fitted and positioned within the nut positioning groove 129 with restricted rotation. Each nut 15 has a threaded hole 151 inside. Two clamping bolts 16 are screwed from the first exit end 112 of the main body 10 to the first entry end 111 through the corresponding through holes 129a into the threaded holes 151, allowing the clamping washer 120 to be abutted by the clamping bolts 16. This clamping action not only further ensures the secure locking of the nut 1b and the screw 2a, but also prevents loosening that may occur during future use.

[0070] It is easily understood that another feasible implementation is that a screw hole is directly provided on each side of the bottom wall of the annular recess 128 of the body 10 along the axial direction of the body 10, so that the clamping bolt 16 can be screwed into the corresponding screw hole from the first protruding end 112 of the body 10 to the first entering end 111. In this way, the clamping washer 120 can also be abutted by the clamping bolt 16.

[0071] It should be noted that, under normal circumstances, the movable component 20 in the above embodiments can also be designed to pivot and position itself in the open position by its own weight. This design ensures that the movable component 20 is in the open position that can be directly installed before installation, which facilitates subsequent installation operations.

[0072] As can be seen from the above, since the movable parts 20 of the nuts 1, 1a, and 1b are normally in the open position, the installer can directly and quickly insert the nuts 1, 1a, and 1b from the end of the screw 2a of the first object 2 upwards without tilting, until the abutting wall 221 of the movable part 20 abuts the lower surface 3b of the second object 3 and automatically pivots to the closed position. The first internal thread 114 in the body 10 of the nuts 1, 1a, and 1b and the second internal thread 214 in the movable part 20 can quickly mesh together with the screw 2a. Therefore, only a slight rotation and tightening are needed to achieve a tight locking effect. Thus, the overall installation operation is quite simple, fast, and secure, especially since it can be performed with one hand.

[0073] Since the nuts 1, 1a, and 1b do not need to be installed at an angle, they are particularly suitable for the installation and locking of various bathroom equipment or accessories such as faucets or toilets. They can significantly shorten the engagement time of long threads and improve the ease of installation while ensuring the reliability and durability of the installation and locking.

[0074] The nuts 1, 1a, and 1b are not integrally molded components, but are assembled from the body 10 and the movable part 20. Therefore, the body 10 and the movable part 20 can be molded from plastic materials through a mold, which makes the production and manufacturing simple and fast, and also has the advantages of being lightweight.

[0075] The nuts 1, 1a, and 1b are all designed with structures that facilitate gripping and operation by installers, such as the ear 13, the gripping surface 141 of the closed ring wall 14, or the gripping surface 118 of the gripping ring wall 117. Therefore, they can achieve the effect of easy gripping and rotation and labor-saving operation.

[0076] The present invention has been described in detail above and embodiments have been cited. For those skilled in the art, it is obvious that various alternatives or modifications can be made based on the above description; therefore, all alternatives and modifications made on this basis are included within the spirit and scope of the claims.

Claims

1. A quick-mounting nut, characterized by The utility model relates to a quick-release fastener, comprising: a body having a first screwing part in the shape of a sleeve, the first screwing part having a first entry end and a first exit end, the first entry end being connected to a pressing wall, the pressing wall having a pressing surface formed thereon; the first screwing part defining a first screwing groove inside, the body having opposite first and second sides, the inner wall surface of the first screwing groove being formed with a first internal thread locally distributed along the circumferential direction at the first side; a movable member pivoted to the pressing wall of the body opposite to the second side and rotatable between an open position and a closed position, the movable member having a second screwing part in the shape of an arc-shaped block, the second screwing part having a second entry end and a second exit end, the second entry end being connected to an abutting wall, the abutting wall having an abutting surface formed thereon; the second screwing part defining a second screwing groove inside, the inner surface of the second screwing groove being formed with a second internal thread opposite to the first internal thread and locally distributed along the circumferential direction; when the movable member is in the open position, the abutting surface of the movable member protrudes from the pressing surface of the body, and the second internal thread swings away from the first internal thread, allowing a screwing member to move rapidly through the first and second internal threads in the axial direction of the body without being engaged; the abutting surface of the movable member can be abutted to pivot the movable member from the open position to the closed position, while forcing the second internal thread to swing close to the first internal thread, so that the first and second internal threads can be simultaneously engaged with the external thread of the screwing member.

2. The quick-mounting nut according to claim 1, characterized in that, The body is externally provided with at least two ears capable of being operated by turning.

3. The quick-mounting nut according to claim 2, characterized in that, The ears are connected between the opposite positions of the peripheral wall of the first screwing part and the pressing wall.

4. The quick-mounting nut according to claim 1, characterized in that, The first screwing part and the pressing wall of the body are respectively provided with a lower notch and an upper notch opposite to the second side, the pressing surface of the pressing wall is respectively recessed with a positioning groove adjacent to the two sides of the upper notch, and the end of the positioning groove away from the upper notch is respectively provided with a limiting slot; the abutting wall of the movable member is respectively provided with a positioning convex shaft protruding from the two sides, which can be respectively embedded and pivoted in the opposite positioning grooves, and the end of the positioning convex shaft is respectively provided with a limiting block, which can be respectively inserted into the opposite limiting slots, so as to limit the movable member from being separated from the body.

5. The quick-mounting nut according to claim 4, characterized in that, The pressing wall of the body is respectively provided with a limiting block protruding from the two side walls opposite to the upper notch, and defines a first abutting surface and a second abutting surface; the abutting wall of the movable member is respectively provided with a resilient block protruding from the two sides, which can be respectively abutted on the opposite first abutting surfaces, so as to limit the movable member to be positioned at the open position, and can be respectively elastically slid through the opposite limiting blocks and stopped by the opposite second abutting surfaces, so as to limit the movable member to be positioned at the closed position.

6. The quick-mounting nut according to claim 4, wherein The first screwing part of the body is respectively provided with a stop block on the two side walls opposite to the lower gap; the second screwing part of the movable member is respectively provided with a containing groove on the two sides, which can accommodate the opposite stop blocks when the movable member is in the closed position, so that the movable member can be stopped in the closed position, and the positioning convex shaft of the movable member is prevented from being separated from the positioning groove of the body.

7. The quick-mounting nut according to claim 4, wherein The stop wall of the movable member is formed with a first upper surface and a second upper surface, which together define the stop wall. The first upper surface can provide a stop force when the movable member is in the open position, and the second upper surface can provide a stop force when the movable member is in the closed position.

8. The quick-mounting nut according to claim 4, wherein The first screwing part of the body is connected to the opposite part of the pressing wall with a closed ring wall, a part of which is located in the lower gap, so that the second screwing part of the movable member is isolated and hidden inside.

9. The quick-mounting nut according to claim 8, characterized in that, The closed ring wall is formed with at least two holding walls that can be turned and operated.

10. The quick-mounting nut according to claim 8, characterized in that, The inner wall of the closed ring wall of the body is respectively formed with a limiting groove on the two sides opposite to the lower gap; the second screwing part of the movable member is respectively provided with a limiting stop block on the two sides, which can be accommodated and limited in the opposite limiting grooves, so that the movable member can be limited to pivot and swing between the open position and the closed position.

11. The quick-mounting nut according to claim 1, characterized in that, The first screwing part of the body is provided with a holding ring wall along the axial direction of the body at the first through end, and the outer surface of the holding ring wall is formed with a holding surface that can be held and rotated.

12. The quick-mounting nut according to claim 1, characterized in that, The pressing wall of the body is formed with an annular recess, which is nested with a pressing washer, and the outer surface of the pressing washer can define the pressing wall. The annular recess is respectively recessed with a positioning groove on the two sides opposite to the second side; the stop wall of the movable member is respectively provided with a positioning convex shaft on the two sides, which can be respectively embedded and pivoted in the opposite positioning grooves.

13. The quick-mounting nut according to claim 12, characterized in that, The first screwing part and the pressing wall of the body are formed with a positioning containing groove on the side opposite to the second side, which can accommodate the second screwing part of the movable member; the pressing washer is formed with a cutting edge on the side opposite to the second side of the body, which can jointly define a through hole on the side of the positioning containing groove opposite to the first entering end, and allow the opposite part of the movable member to extend inside.

14. The quick-mounting nut according to claim 12, characterized in that, The annular recess of the body is respectively recessed with a nut positioning groove on the two sides of the bottom wall, and the bottom wall of the nut positioning groove is respectively provided with a through hole along the axial direction of the body; two nuts are respectively embedded and positioned in the nut positioning grooves in a limited rotating manner, and the inside of each nut is formed with a screw hole; two pressing bolts are screwed into the screw holes from the first through end to the first entering end of the body through the opposite through holes, so that the pressing washer can be stopped by the pressing bolts.

15. The quick-mounting nut of claim 12, wherein Two screw holes are respectively arranged on the two side edges of the bottom wall surface of the annular recess of the body along the axial direction of the body; two pressing bolts are respectively screwed into the two screw holes from the first through end to the first entering end of the body, so that the pressing washer is pressed by the pressing bolts.

16. The quick-mounting nut according to claim 1, characterized in that, In the normal state, the movable member is naturally pivoted to the opening position by its own weight.

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