CN115978071A

CN115978071A - Quick nut

Info

Publication number: CN115978071A
Application number: CN202211590750.XA
Authority: CN
Inventors: 王衍刚; 刘文斌; 蒋可静
Original assignee: Zhejiang Central Control Sensor Technology Co ltd
Current assignee: Zhejiang Central Control Sensor Technology Co ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-04-18

Abstract

The invention provides a quick nut which comprises a shell and an opening and closing body, wherein the shell is provided with a through cavity, the opening and closing body is arranged in the cavity of the shell, a first through hole is formed in the opening and closing body, a first groove is formed in the outer wall of the opening and closing body at the joint of opening and closing sheets, a guide strip is arranged in the middle of the outer wall of each opening and closing sheet along the axial direction of the opening and closing body, a second groove is formed in the radial direction of the opening and closing body along the guide strip, a third groove is formed in the inner wall of the shell along the axial direction of the opening and closing body, an elastic part is arranged in the second groove, the end part, far away from the opening and closing sheet, of the elastic part is connected with a sliding part, the sliding part is in contact with the wall surface of the third groove, a second through hole is formed in the shell along the radial direction of the opening and closing body, and a push pin is arranged in the second through hole. The invention obviously improves the efficiency of the long bolt connection.

Description

Quick nut

Technical Field

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

Background

In a mechanical equipment locking mechanism, a long bolt can be used, and as the nut needs to be screwed at different positions in a certain stroke range due to the requirement of adapting to different thicknesses or strokes, the adjustment of a common nut in the long stroke range is time-consuming and labor-consuming.

At present, the most common structural form of the long bolt is shown in fig. 1, the distance from the head of the bolt to the tightening position of the nut is long, the nut needs to be rotated along the bolt to advance by one buckle, and the efficiency is not high. As shown in figure 2, when the nut is tightened, the driving block 2 is rotated anticlockwise to enable the driven nut block 51 and the clamping nut block 52 of the nut 5 to be disengaged in the direction away from the axis of the bolt along the sliding groove, at the moment, the nut can freely move along the axis of the bolt, after the nut is moved to a proper position, the driving block 2 is rotated clockwise to enable the driven nut block 51 and the clamping nut block 52 of the nut 5 to be clamped in the direction close to the axis of the bolt along the sliding groove, and then the nut 5 is tightened by a wrench to achieve tightening operation; when the nut is loosened, the nut 5 is unscrewed by a wrench, and then the driving block 2 is rotated anticlockwise, so that the driven nut block 51 and the clamping nut block 52 of the nut 5 are separated along the sliding groove in the direction away from the axis of the bolt, and the nut 5 can freely move along the axis of the bolt at the moment; although this type of quick nut can improve efficiency to some extent, it is complicated in structure, disadvantageous to popularization and use, and requires an additional action of operating the driving block 2. The other quick nut depends on the eccentric hole to move quickly along the bolt, but the existence of the eccentric hole enables the internal thread of the nut to be incomplete, only half circle of threads participate in meshing at most in the circumferential direction, so that the torque born when screwing is greatly reduced, and the service life of the bolt is influenced due to uneven abrasion of the thread of the bolt.

Therefore, the invention provides a novel quick nut which can be conveniently and quickly moved on a long bolt and can be screwed up like a common nut at a required position.

Disclosure of Invention

In view of the shortcomings in the prior art, it is an object of the present invention to provide a quick nut.

The invention provides a quick nut which comprises a shell and an opening and closing body, wherein the shell is provided with a through cavity, the opening and closing body is arranged in the cavity of the shell, a first through hole is formed in the opening and closing body, an internal thread is formed in the first through hole of the opening and closing body, the opening and closing body comprises two opening and closing sheets which are split along the circumferential direction, a first groove is formed in the outer wall of the connecting part of the opening and closing sheets, a guide strip is arranged in the middle position of the outer wall of the opening and closing sheets along the axial direction of the opening and closing body, a second groove is formed in the guide strip along the radial direction of the opening and closing body, a third groove is formed in the inner wall of the shell along the axial direction of the opening and closing body, an elastic piece is arranged in the third groove, a sliding piece is connected to the end part, far away from the opening and closing sheet, of the elastic piece is in contact with the wall surface of the third groove, a second through hole along the radial direction of the opening and is formed in the shell, a push pin is arranged in the second through hole, and the second through hole is matched with the first opening and closing body.

Further, the shell is hexagonal, the opening and closing body is cylindrical, and the axis of the first through hole coincides with the axis of the shell.

Preferably, the first groove is a V-shaped groove, and the head of the push pin is tapered.

Furthermore, the third groove accommodates the guide strip, and a gap is formed between the guide strip and the third groove along the circumferential direction of the opening and closing body.

Preferably, the elastic member is a spring, and a length direction of the elastic member is along a radial direction of the opening and closing body.

Preferably, the sliding part is a steel ball, and the surface of the third groove contacting with the sliding part is an arc surface.

Further, one end of the cavity has a first tapered surface that converges.

Furthermore, one end of the outer wall of the opening and closing body is provided with a second conical surface, and the second conical surface is matched with the first conical surface.

Furthermore, the other end of cavity is equipped with the end cover, the end cover with the casing passes through tang interference fit, the end cover is opened there is the third through-hole.

Preferably, the diameter of the third through hole is smaller than the outer diameter of the opening and closing body.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the quick nut, the elastic pieces which are symmetrically arranged realize quick combination and separation of the opening and closing bodies; the shell and the opening and closing body are matched through the guide strip and the guide groove, so that the dislocation of the nut in the opening and closing process is avoided; the end parts of the shell and the opening body are provided with conical surfaces, so that the nut is reliably connected in the locking process and is not easy to disengage.

2. The quick nut has a simple structure, is convenient to use, can realize quick movement of the nut only by pressing the push pin, is the same as the operation of a common nut in screwing, does not need other auxiliary appliances and operations, and greatly improves the connection efficiency.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic view of a conventional long bolt nut of the prior art;

FIG. 2 is a schematic view of a prior art quick nut;

FIG. 3 is a schematic view of a quick nut and bolt connection according to an embodiment of the present invention;

FIG. 4 is an exploded view of a speed nut according to an embodiment of the present invention;

FIG. 5 is a three-view illustration of a speed nut in accordance with an embodiment of the present invention;

FIG. 6 is a three-dimensional view of the housing of the speed nut of the embodiment of the present invention;

FIG. 7 is a schematic view of a closure of the speed nut of the embodiment of the present invention;

fig. 8 is a schematic push pin view of a quick nut of an embodiment of the present invention.

In the figure, 1-shell, 11-third groove, 12-first conical surface, 13-second through hole, 14-cavity, 2-opening-closing body, 21-first groove, 22-guide strip, 23-second conical surface, 24-second groove, 25-first through hole, 26-opening-closing sheet, 3-elastic piece, 4-end cover, 5-sliding piece, 6-push pin, 10-quick nut, 20-long bolt and 30-backing plate.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.

The invention provides a quick nut, as shown in fig. 3, the quick nut 10 of the invention is used for a long bolt 20, the positioning of the quick nut 10 and a backing plate 30 can be quickly realized by operating a push pin 6, the quick installation of the bolt is realized, and the efficiency is greatly improved compared with the screwing of the nut in a way of one buckle and one buckle.

As shown in fig. 4, the quick nut of the present embodiment is composed of a housing 1, an opening-closing body 2, an elastic member 3, an end cap 4, a sliding member 5, and a push pin 6.

As shown in fig. 6, the housing 1 of the present embodiment has a hexagonal shape as a whole, and the joints of the six faces are rounded to match with a conventional external hexagonal wrench. A through cavity 14 is formed in the housing 1 so that the opening/closing body 2 can be placed in the cavity 14.

As shown in fig. 7, the opening and closing body 2 is a cylindrical body as a whole, a first through hole 25 is formed inside, and the first through hole 25 is internally threaded to form a nut structure; the first through hole 25 coincides with the length direction of the cavity 14. The openable and closable body 2 is divided into two openable and closable pieces 26 along the circumferential direction, and the openable and closable pieces 26 divide the openable and closable body 2 equally. At the joint of the opening and closing sheet 26, a first groove 21 is opened along the outer wall of the opening and closing body 2, and the first groove 21 extends along the axial direction of the opening and closing body 2. A guide strip 22 is arranged at the middle position of the outer wall of each opening and closing sheet 26 along the axial direction of the opening and closing body 2, and the section of the guide strip 22 is rectangular. The guide bar 22 is provided with a second groove 24 along the radial direction of the opening/closing body 2.

Correspondingly, as shown in fig. 6, a third groove 11 matching with the guide strip 22 is formed on the inner wall of the housing 1 along the axial direction of the opening-closing body 2, and a second through hole 13 is further formed on the side wall of the housing 1.

As shown in fig. 5, the opening and closing body 2 is placed in the cavity 14 of the housing 1, and a portion of the guide bar 22 is located in the third groove 11. The elastic member 3 is placed in the second groove 24, the end of the elastic member 3 is connected to the slider 5, and the slider 5 can be in contact with the wall surface of the third groove 11 and can slide along the third groove 11. In this embodiment, the elastic member 3 is a spring, and the length direction thereof is along the radial direction of the opening and closing body 2; the sliding part 5 is a steel ball, and the surface of the third groove 11 contacted with the sliding part 5 is an arc surface. In this embodiment, the two opening and closing pieces 26 are pressed by the elastic members 3 at the two sides of the opening and closing piece 26, so that the two opening and closing pieces 26 are combined into a nut structure; the guide strip 22 is pressed in the circumferential direction by the side wall of the third groove 11 of the housing 1, providing a tightening force for the connection of the opening and closing body 2 to the bolt. In the circumferential direction, a gap is reserved between the guide strip 22 and the side wall of the third groove 11, so that the guide strip 22 can slide in the radial direction in the third groove 11.

A push pin 6 is inserted into the second through hole 13 of the housing 1, and one end of the push pin 6 is engaged with the first groove 21 of the opening and closing body 2. In this embodiment, the first groove 21 is a V-shaped groove, the end portion corresponding to the push pin 6 is tapered, the push pin 6 is pushed by the other end of the push pin 6, the push pin 6 simultaneously presses the two opening and closing pieces 26, and the elastic member 3 is compressed, so that the two opening and closing pieces 26 are separated, the opening and closing body 2 can be separated from the bolt, and the quick movement of the quick nut 10 along the bolt is realized. When the push pin 6 is released, the elastic piece 3 pushes the two opening and closing pieces 26 again, so that the two opening and closing pieces 26 are combined into a nut.

A gap is left between the outer wall of the coupling bodies 2 and the inner wall of the housing 1 to facilitate the coupling of the two coupling bodies 2 and to allow the quick nut 10 to freely move along the long bolt 20.

As shown in fig. 6 and 7, one end of the cavity 14 of the housing 1 has a first tapered surface 12, one end of the split body 2 has a second tapered surface 23, the second tapered surface 23 is matched with the first tapered surface 12, and during the process of screwing the quick nut 10 through the housing 1, the second tapered surface 23 is kept in contact with the first tapered surface 12 and closed, so that the two split pieces 26 can be further prevented from being disengaged, reliable locking force can be provided, and the split body 2 and the bolt axis can be kept coincident and prevented from being misplaced.

As shown in fig. 5, the other end of the housing 1 is provided with an end cap 4, and the end cap 4 is connected with the housing 1 by a spigot interference fit. The end cover 4 is provided with a third through hole for the bolt to pass through. The diameter of the third through hole is smaller than the outer diameter of the opening and closing body 2, so that the opening and closing body 2 can be prevented from being removed from the housing 1.

As shown in fig. 8, the push pin 6 is divided into a straight section and a tapered section, and the maximum diameter of the tapered section is larger than that of the straight section, so that the push pin 6 is prevented from coming out of the second through hole 13.

As shown in fig. 3, the speed nut of the present invention, when used for connection, can freely move the speed nut 10 to a proper position by pressing the push pin 6 to disengage the coupling body 2, and then loosen the push pin 6 and tighten the speed nut 10 with a wrench; when the nut needs to be disassembled, the quick nut 10 is firstly unscrewed by a wrench, and then the push pin 6 is pressed, so that the quick nut 10 can be freely moved and disassembled from the long bolt 20.

The foregoing description has described specific embodiments of the present invention. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. The quick nut is characterized by comprising a shell and an opening and closing body, wherein the shell is provided with a through cavity, the opening and closing body is arranged in the cavity of the shell, a first through hole is formed in the opening and closing body, an internal thread is formed in the first through hole of the opening and closing body, the opening and closing body comprises two opening and closing sheets which are split along the circumferential direction, a first groove is formed in the outer wall of the joint of the opening and closing sheets of the opening and closing body, a guide strip is arranged in the middle of the outer wall of the opening and closing sheets along the axial direction of the opening and closing body, a second groove is formed in the radial direction of the opening and closing body along the radial direction of the opening and closing body, a third groove is formed in the inner wall of the shell along the axial direction of the opening and closing body, an elastic piece is arranged in the third groove, a sliding piece is connected to the end, far away from the opening and closing sheets, of the elastic piece, the sliding piece is in contact with the wall surface of the third groove, a second through hole is formed in the radial direction of the shell, a push pin is arranged in the second through hole, and is matched with the first groove.

2. The quick nut as claimed in claim 1, wherein said housing is hexagonal, said opening and closing body is cylindrical, and an axis of said first through hole coincides with an axis of said housing.

3. The quick nut of claim 1 wherein said first groove is a V-shaped groove and said push pin head is tapered.

4. The quick nut as claimed in claim 1, wherein said third groove accommodates said guide strip, and said guide strip and said third groove are provided with a gap in a circumferential direction of said opening and closing body.

5. The quick nut as claimed in claim 1, wherein said elastic member is a spring, and a length direction of said elastic member is along a radial direction of said opening and closing body.

6. The quick nut of claim 5, wherein the sliding member is a steel ball, and a surface of the third groove contacting the sliding member is an arc-shaped surface.

7. The quick nut of claim 2 wherein one end of the cavity has a first tapered surface that tapers.

8. The quick nut of claim 7, wherein said opening body has a second tapered surface at one end of its outer wall, said second tapered surface matching said first tapered surface.

9. The quick nut as claimed in claim 7, wherein the other end of the cavity is provided with an end cap, the end cap and the shell are in interference fit through a spigot, and the end cap is provided with a third through hole.

10. The quick nut of claim 9 wherein said third through hole has a diameter less than an outer diameter of said opening body.