A quick nut

Abstract

The present invention provides a quick nut, comprising a shell and an opening and closing body, wherein the shell has a through cavity, the opening and closing body is placed in the cavity of the shell, a first through hole is arranged in the opening and closing body, a first groove is arranged on the outer wall of the opening and closing body at the connection of the opening and closing pieces, a guide bar is arranged at the middle position of the outer wall of the opening and closing piece along the axial direction of the opening and closing body, the guide bar is arranged with a second groove along the radial direction of the opening and closing body, a third groove is arranged on the inner wall of the shell along the axial direction of the opening and closing body, an elastic member is arranged in the second groove, a sliding member is connected to the end of the elastic member away from the opening and closing piece, the sliding member contacts the wall surface of the third groove, a second through hole is arranged on the shell along the radial direction of the opening and closing body, and a push pin is arranged in the second through hole. The present invention significantly improves the efficiency of long bolt connection.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical fasteners, and in particular to a quick nut. Background Art

[0002] Long bolts are used in the locking mechanism of mechanical equipment. Due to the need to adapt to different thicknesses or stroke requirements, the nuts need to be tightened at different positions within a certain stroke range. Ordinary nuts are time-consuming and laborious to adjust within such a long stroke range.

[0003] The most common long bolt structure is Figure 1 As shown in the figure, the distance from the bolt head to the tightening position of the nut is long, and the nut needs to be rotated along the bolt to move forward one by one, which is not efficient. Figure 2 As shown, when tightening the nut, the driving block 2 is rotated counterclockwise to disengage the driven nut block 51 and the clamping nut block 52 of the nut 5 along the slide groove away from the bolt axis. At this time, the nut can move freely along the bolt axis. After moving the nut to a suitable position, the driving block 2 is rotated clockwise to clamp the driven nut block 51 and the clamping nut block 52 of the nut 5 along the slide groove toward the bolt axis, and then the nut 5 is tightened by a wrench to achieve the tightening operation; when loosening the nut, the nut 5 is loosened with a wrench, and then the driving block 2 is rotated counterclockwise to disengage the driven nut block 51 and the clamping nut block 52 of the nut 5 along the slide groove away from the bolt axis. At this time, the nut 5 can move freely along the bolt axis; although this type of quick nut can improve efficiency to a certain extent, it has a complex structure, is not conducive to popularization and use, and requires additional actions to operate the driving block 2. Another type of quick nut relies on an eccentric hole to move quickly along the bolt, but the existence of the eccentric hole makes the internal thread of the nut incomplete, and only half a circle of threads in the circumferential direction are involved in the meshing, which greatly reduces the torque that can be carried when tightening, and causes uneven wear of the bolt thread, affecting the service life of the bolt.

[0004] To this end, the present invention provides a novel quick nut, which can be conveniently and quickly moved on a long bolt and tightened at a required position like a common nut. Summary of the invention

[0005] In view of the defects in the prior art, an object of the present invention is to provide a quick nut.

[0006] The quick nut provided by the present invention comprises a shell and an opening and closing body, the shell having a through cavity, the opening and closing body being placed in the cavity of the shell, a first through hole being provided in the opening and closing body, the first through hole of the opening and closing body being provided with an internal thread, the opening and closing body comprising two opening and closing pieces split along a circumferential direction, a first groove being provided on an outer wall of the opening and closing body at a connection point of the opening and closing pieces, a guide strip being provided at a middle position of an outer wall of the opening and closing piece along an axial direction of the opening and closing body, the guide strip being provided with a second groove along a radial direction of the opening and closing body, a third groove being provided on an inner wall of the shell along an axial direction of the opening and closing body, the third groove being matched with the guide strip, an elastic member being built in the second groove, a sliding member being connected to an end of the elastic member away from the opening and closing piece, the sliding member being in contact with a wall surface of the third groove, a second through hole being further provided on the shell along a radial direction of the opening and closing body, a push pin being built in the second through hole, the push pin being matched with the first groove.

[0007] Furthermore, 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.

[0008] Preferably, the first groove is a V-shaped groove, and the head of the push pin is conical.

[0009] Furthermore, the guide bar is accommodated in the third groove, and a gap is provided between the guide bar and the third groove along the circumferential direction of the opening and closing body.

[0010] Preferably, the elastic member is a spring, and the length direction of the elastic member is along the radial direction of the opening and closing body.

[0011] Preferably, the sliding member is a steel ball, and the surface of the third groove in contact with the sliding member is an arc-shaped surface.

[0012] Furthermore, one end of the cavity has a contracted first conical surface.

[0013] Furthermore, a second conical surface is provided at one end of the outer wall of the opening and closing body, and the second conical surface matches the first conical surface.

[0014] Furthermore, an end cover is provided at the other end of the cavity, the end cover is interference fit with the shell through a stopper, and the end cover is provided with a third through hole.

[0015] Preferably, the diameter of the third through hole is smaller than the outer diameter of the opening and closing body.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The quick nut of the present invention has symmetrically arranged elastic parts to realize the rapid combination and disengagement of the opening and closing body; the shell and the opening and closing body cooperate with each other through guide strips and guide grooves to ensure that the nut will not be misaligned during the opening and closing process; the ends of the shell and the opening and closing body are provided with conical surfaces, which ensure reliable connection during the nut locking process and are not easy to disengage.

[0018] 2. The quick nut of the present invention has a simple structure and is easy to use. The nut can be quickly moved only by pressing and pushing. The operation of tightening is the same as that of an ordinary nut, and no other auxiliary tools and operations are required, which greatly improves the connection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0020] Figure 1 It is a schematic diagram of a common long bolt and nut in the prior art;

[0021] Figure 2 A schematic diagram of a quick nut in the prior art;

[0022] Figure 3 A schematic diagram of the connection between a quick nut and a bolt according to an embodiment of the present invention;

[0023] Figure 4 An exploded view of a quick nut according to an embodiment of the present invention;

[0024] Figure 5 Three views of the quick nut according to an embodiment of the present invention;

[0025] Figure 6 Three views of the housing of the quick nut according to an embodiment of the present invention;

[0026] Figure 7 A schematic diagram of the opening and closing body of a quick nut according to an embodiment of the present invention;

[0027] Figure 8 The figure is a schematic diagram for promoting the quick nut according to an embodiment of the present invention.

[0028] In the figure, 1-shell, 11-third groove, 12-first conical surface, 13-second through hole, 14-cavity, 2-opening and closing body, 21-first groove, 22-guide strip, 23-second conical surface, 24-second groove, 25-first through hole, 26-opening and closing piece, 3-elastic part, 4-end cover, 5-sliding part, 6-pushing pin, 10-quick nut, 20-long bolt, 30-gasket. DETAILED DESCRIPTION

[0029] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0030] The present invention provides a quick nut, such as Figure 3 As shown, the quick nut 10 of the present invention is used on a long bolt 20. By operating the push pin 6, the quick nut 10 and the backing plate 30 can be quickly positioned to achieve rapid installation of the bolt, which greatly improves efficiency compared to screwing the nut one by one.

[0031] like Figure 4 As shown, the quick nut of this embodiment is composed of a shell 1, an opening and closing body 2, an elastic member 3, an end cover 4, a sliding member 5 and a push pin 6.

[0032] like Figure 6 As shown, the housing 1 of this embodiment is hexagonal in shape as a whole, and the joints of the six faces are rounded to match with a commonly used hexagonal wrench. A through cavity 14 is opened inside the housing 1, so that the opening and closing body 2 can be placed in the cavity 14.

[0033] like Figure 7 As shown, the opening and closing body 2 is cylindrical as a whole, and a first through hole 25 is opened inside. The first through hole 25 is processed with an internal thread to form a nut structure; the first through hole 25 is consistent with the length direction of the cavity 14. The opening and closing body 2 is divided into two opening and closing pieces 26 along the circumferential direction, and the two opening and closing pieces 26 divide the opening and closing body 2 equally. At the connection of the opening and closing pieces 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 bar 22 is provided in the middle position of the outer wall of each opening and closing piece 26 along the axial direction of the opening and closing body 2, and the cross-section of the guide bar 22 is rectangular. The guide bar 22 has a second groove 24 along the radial direction of the opening and closing body 2.

[0034] Accordingly, if Figure 6 As shown, a third groove 11 matching the guide strip 22 is formed on the inner wall of the housing 1 along the axial direction of the opening and closing body 2 , and a second through hole 13 is formed on the side wall of the housing 1 .

[0035] like Figure 5As shown, the opening and closing body 2 is placed in the cavity 14 of the shell 1, and a part of the guide strip 22 is located in the third groove 11. An elastic member 3 is inserted into the second groove 24, and a sliding member 5 is connected to the end of the elastic member 3. The sliding member 5 can contact the wall surface of the third groove 11 and slide along the third groove 11. In this embodiment, the elastic member 3 is specifically a spring, and its length direction is along the radial direction of the opening and closing body 2; the sliding member 5 is a steel ball, and the surface of the third groove 11 that contacts the sliding member 5 is an arc surface. In this embodiment, the two opening and closing pieces 26 are pressed by the elastic members 3 on both sides of the opening and closing pieces 26, so that the two opening and closing pieces 26 are combined into a nut structure; the guide strip 22 is squeezed in the circumferential direction by the side wall of the third groove 11 of the shell 1, providing a tightening force for the connection between the opening and closing body 2 and 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.

[0036] A push pin 6 is inserted into the second through hole 13 of the housing 1, and one end of the push pin 6 matches with the first groove 21 of the opening and closing body 2. In this embodiment, the first groove 21 is a V-shaped groove, and the corresponding end of the push pin 6 is a cone. The push pin 6 is pushed by the other end of the push pin 6, and the push pin 6 squeezes the two opening and closing pieces 26 at the same time, and then the elastic member 3 is compressed, so that the two opening and closing pieces 26 are separated, that is, the opening and closing body 2 can be disengaged from the bolt, and the quick nut 10 can be moved quickly along the bolt. When the push pin 6 is loosened, the elastic member 3 pushes the two opening and closing pieces 26 again, so that the two opening and closing pieces 26 are combined into a nut.

[0037] A gap is left between the outer wall of the split body 2 and the inner wall of the housing 1 to facilitate the disengagement of the two split bodies 2 and enable the quick nut 10 to move freely along the long bolt 20 .

[0038] like Figure 6 and Figure 7 As shown, one end of the cavity 14 of the shell 1 has a first conical surface 12, and one end of the opening and closing body 2 has a second conical surface 23, and the second conical surface 23 cooperates with the first conical surface 12. In the process of tightening the quick nut 10 through the shell 1, the second conical surface 23 and the first conical surface 12 remain in contact and closed, which can further prevent the two opening and closing pieces 26 from disengaging, provide reliable locking force, and at the same time keep the opening and closing body 2 and the bolt axis coincident to prevent misalignment.

[0039] like Figure 5 As shown, the other end of the housing 1 is provided with an end cover 4, which is connected to the housing 1 by means of interference fit of the stopper. A third through hole is provided on the end cover 4 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 falling out of the housing 1.

[0040] like Figure 8As shown, the push pin 6 is divided into a straight section and a tapered section, and the maximum diameter of the tapered section is greater than the diameter of the straight section, which can prevent the push pin 6 from escaping from the second through hole 13.

[0041] like Figure 3 As shown, when the quick nut of the present invention is used for connection, the push pin 6 is pressed to disengage the opening and closing body 2 so that the quick nut 10 can be freely moved to a suitable position, and then the push pin 6 is loosened and the quick nut 10 is tightened with a wrench; when the nut needs to be removed, the quick nut 10 is first loosened with a wrench, and then the push pin 6 is pressed to freely move the quick nut 10 and remove it from the long bolt 20.

[0042] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A quick nut, characterized in that: The invention comprises a shell and an opening and closing body, wherein the shell has a through cavity, the opening and closing body is placed in the cavity of the shell, a first through hole is arranged in the opening and closing body, the first through hole of the opening and closing body has an internal thread, the opening and closing body comprises two opening and closing pieces split along the circumferential direction, the opening and closing body has a first groove on the outer wall at the connection of the opening and closing pieces, a guide strip is arranged at the middle position of the outer wall of the opening and closing piece along the axial direction of the opening and closing body, the guide strip has a second groove along the radial direction of the opening and closing body, the inner wall of the shell has a third groove along the axial direction of the opening and closing body, the third groove cooperates with the guide strip, and the second groove has a built-in An elastic member, wherein the end of the elastic member away from the opening and closing piece is connected with a sliding member, the sliding member contacts the wall surface of the third groove, the sliding member is a steel ball, the surface of the third groove in contact with the sliding member is an arc-shaped surface, the shell is also provided with a second through hole along the radial direction of the opening and closing body, the second through hole is equipped with a push pin, the push pin cooperates with the first groove, the push pin is divided into a straight section and a tapered section, the straight section of the push pin cooperates with the second through hole, the maximum diameter of the tapered section of the push pin is larger than the diameter of the straight section, the first groove is a V-shaped groove, the head of the push pin is tapered, and the tapered head of the push pin cooperates with the V-shaped groove.

2. The quick nut according to claim 1, characterized in that: 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.

3. The quick nut according to claim 1, characterized in that: The guide bar is accommodated in the third groove, and a gap is provided between the guide bar and the third groove along the circumferential direction of the opening and closing body.

4. The quick nut according to claim 1, characterized in that: The elastic member is a spring, and the length direction of the elastic member is along the radial direction of the opening and closing body.

5. The quick nut according to claim 2, characterized in that: One end of the cavity has a first tapered surface that contracts.

6. The quick nut according to claim 5, characterized in that: A second tapered surface is provided at one end of the outer wall of the opening and closing body, and the second tapered surface matches the first tapered surface.

7. The quick nut according to claim 5, characterized in that: An end cover is provided at the other end of the cavity. The end cover is interference fit with the shell through a stopper, and a third through hole is opened in the end cover.

8. The quick nut according to claim 7, characterized in that: The diameter of the third through hole is smaller than the outer diameter of the opening and closing body.

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