Reinforced quick nut

Abstract

The invention relates to the field of vibration test workpieces, in particular to a limited reinforcement type quick nut which comprises a nut body, the nut body is provided with a first surface and a second surface which are oppositely arranged, a screw hole penetrating through the first surface and the second surface is formed in the nut body, and threads are arranged on the inner wall of the screw hole. The screw hole comprises a straight hole and an inclined hole partially overlapped with the straight hole, the straight hole is provided with a first center shaft, the inclined hole is provided with a second center shaft, the first center shaft is perpendicular to the first surface, the second center shaft and the first center shaft are arranged in an inclined mode, and the first center shaft and the second center shaft are arranged in the direction where the first center shaft is located. The height of the straight hole is larger than 30 mm. And the height of the straight hole is greater than 30 mm, so that the connection firmness is improved.

Description

Technical Field

[0001] The present application relates to the field of mechanical connection, and in particular to a reinforced quick nut. Background Art

[0002] Generally speaking, quick nuts usually adopt a beveled half-thread design, which can achieve quick locking and disassembly through the quick engagement of the thread and the bolt. However, due to the beveled half-thread design, the threads of traditional quick nuts are easily loosened due to vibration or external force under high vibration or slightly uneven installation surfaces, affecting the firmness and safety of the connection. Summary of the invention

[0003] In view of this, it is necessary to provide a reinforced quick nut, which has the advantage of improving the firmness of the connection.

[0004] A reinforced quick nut comprises a nut body, the nut body having a first surface and a second surface arranged opposite to each other, the interior of the nut body having a screw hole penetrating the first surface and the second surface, the inner wall of the screw hole having a thread, the screw hole comprising a straight hole and an inclined hole partially overlapping with the straight hole, the straight hole having a first central axis, the inclined hole having a second central axis, the first central axis being arranged perpendicular to the first surface, the second central axis being arranged obliquely to the first central axis, and the height of the straight hole along the direction where the first central axis is located is greater than 30 mm.

[0005] In some possible implementations, the thread is disposed on an inner wall of the straight hole, and a pitch of the thread is 1.6 to 2.0 mm.

[0006] In some possible implementations, the included angle between the first central axis and the second central axis is 12° to 15°.

[0007] In some possible implementations, the included angle between the first central axis and the second central axis is 13.5°.

[0008] In some possible implementations, the inner diameter of the straight hole is 18 mm to 22 mm, and the inner diameter of the inclined hole is 12 mm to 16 mm.

[0009] In some possible implementations, the reinforced quick nut further includes a seat body, the seat body includes an outer sleeve portion and a connecting portion, the outer sleeve portion is sleeved on the outer side of the connecting portion, the connecting portion is provided with a through hole, and the nut body is penetrated by the through hole.

[0010] In some possible implementations, a plurality of anti-slip grooves are provided on a surface of a side of the outer sleeve facing away from the nut body, and an extension direction of the anti-slip grooves is parallel to the first central axis.

[0011] In some possible implementations, the first surface protrudes from the outer shell, and the second surface is located inside the outer shell.

[0012] In some possible implementations, two notches are provided at one end of the nut body close to the first surface, and the two notches are symmetrically arranged.

[0013] In some possible implementations, the reinforced quick nut is made of bearing steel.

[0014] The reinforced quick nut provided in the present application has a unique screw hole design, in which the straight hole and the inclined hole partially overlap and the height of the straight hole is greater than 30 mm, so that the fit between the bolt and the nut is tighter and more stable during installation, the bite force between the threads is enhanced, and vibration and external forces are effectively resisted, thereby solving the problem of easy loosening of threads of traditional quick nuts under high vibration or slightly uneven installation surfaces, and improving the firmness and safety of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a reinforced quick nut provided in one embodiment of the present application.

[0016] Figure 2 yes Figure 1 Top view of the reinforced quick nut shown.

[0017] Figure 3 yes Figure 1 Side view of the reinforced quick nut shown.

[0018] Figure 4 yes Figure 1 The cross-sectional view of the reinforced quick nut along line AA is shown Figure 5 It is a cross-sectional view of a reinforced quick nut provided in another embodiment of the present application.

[0019] Main component symbols Reinforced quick nut 100 Nut body 1 Nut seat 2 Outerwear 21 Connecting part 22 Through hole 221 First End 11 Second end 12 First surface 111 Second surface 112 Screw hole 3 Straight hole 31 Oblique hole 32 First central axis 311 Second central axis 321 Thread 30 Stripe 322 Anti-slip groove 211 Gap 113. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0021] It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "located on" another component, it may be directly located on the other component or there may be a central component at the same time.

[0022] When two elements (planes, lines) are arranged in parallel, it should be understood that the relationship between the two elements includes parallel and approximately parallel. Approximately parallel should be understood as a certain angle between the two elements, which is greater than 0° and less than or equal to 10°.

[0023] When two elements (planes, lines) are arranged vertically, it should be understood that the relationship between the two elements includes vertical and approximately vertical. The approximately vertical should be understood as the angle between the two elements being greater than or equal to 80° and less than 90°.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0025] See also Figure 1 An embodiment of the present application provides a reinforced quick nut 100 (hereinafter referred to as nut 100), which is used to cooperate with a bolt to form a fastening structure. The fastening structure can be applied to mechanical structure connection scenarios that require frequent disassembly and installation and have high requirements for connection stability. For example, in the process of industrial testing, the equipment needs to be repeatedly assembled and debugged to adapt to different test items and parameter adjustments.

[0026] See also Figure 1 , Figure 2 , Figure 3 as well as Figure 4, the nut 100 includes a nut body 1 and a nut seat 2. The nut body 1 is roughly cylindrical, and the nut seat 2 is roughly tubular. The nut seat 2 is sleeved on the outside of the nut body 1. The nut seat 2 includes an outer sleeve 21 and a connecting portion 22. The connecting portion 22 is arranged in the outer sleeve 21, and the connecting portion 22 is provided with a through hole 221. The nut body 1 is penetrated by the through hole 221. The nut body 1 is adapted to the through hole 221, and the edge of the nut body 1 is connected to the connecting portion 22 to form the overall structure of the nut 100. In other embodiments of the present application, in other embodiments of the present application, the cross-sectional shape of the nut body 1 can be one of a regular hexagon, a regular quadrilateral, a circle, and an ellipse, so as to adapt to different installation tools and application scenarios; the cross-sectional shape of the nut seat 2 can be one of a rectangular parallelepiped, a cube, a cylinder, and a prism, so as to expand the applicability of the nut 100 and meet diverse usage requirements.

[0027] The nut body 1 includes a first end 11 and a second end 12 opposite to the first end 11. The first end 11 protrudes from the outer sleeve 21, and the second end 12 is accommodated in the outer sleeve 21. The nut seat 2 can be used to enhance the overall stability of the nut, thereby ensuring the reliability of the connection of the nut 100 under complex working conditions. Specifically, the outer sleeve 21 provides lateral support and constraint for the nut body 1. When the nut 100 is subjected to external lateral impact force or vibration, the outer sleeve 21 can effectively disperse these forces to prevent the nut body 1 from tilting or loosening due to uneven force. For example, in the severe vibration environment generated during the operation of industrial equipment, the outer sleeve 21 is like a stable shield, so that the nut body 1 can always maintain the correct axial position to ensure a close fit with the bolt.

[0028] In this embodiment, the nut body 1 and the nut seat body 2 are an integrally formed structure. The nut 100 is a bearing steel, such as GCr15, or a high-strength alloy steel, such as 40CrNiMoA, or a precipitation hardened stainless steel, such as 17-4PH, or a titanium alloy, such as TC4 and other high-strength materials, so that the nut 100 can adapt to a variety of complex and harsh working environments and working conditions. In other embodiments, the connecting portion 22 and / or the outer jacket 21 are made of a flexible material, for example, a material with good elasticity and flexibility such as rubber or silicone. These materials have a high deformation capacity and can easily bend, stretch or compress when subjected to external forces. In this way, when the nut 100 is in a complex installation environment, such as when the installation surface has slight unevenness or a certain inclination angle, the connecting portion 22 and / or the outer jacket 21 can adaptively adjust the shape and posture by virtue of its own flexibility. The connection part 22 and / or the outer sleeve 21 can be bent or twisted within a certain range, thereby driving the outer sleeve 21 and / or the relative position relationship between the outer sleeve 21 and the nut body 1 to be fine-tuned, ensuring that the nut body 1 can always maintain good coaxiality and fit with the bolt, and achieve a stable and reliable connection. Even under long-term vibration or external force impact, the flexible connection part 22 and / or the outer sleeve 21 can absorb part of the energy through its own deformation buffer, reduce the impact on the tightening state of the nut body 1, and further improve the adaptability and connection stability of the entire nut 100 under different working conditions.

[0029] In this embodiment, the first end 11 of the nut body 1 has a first surface 111 away from the second end 12, and the second end 12 has a second surface 112 away from the first surface 111. The nut body 1 is provided with a screw hole 3. The screw hole 3 passes through the first surface 111 and the second surface 112. Among them, the screw hole 3 is a special-shaped structure, and the screw hole 3 includes a straight hole 31 and an oblique hole 32. The straight hole 31 and the oblique hole 32 partially overlap. The straight hole 31 has a first central axis 311, and the oblique hole 32 has a second central axis 321. The first central axis 311 intersects with the second central axis 321, and the angle between the first central axis 311 and the second central axis 321 is between 12° and 15 degrees. A thread 30 is provided in the straight hole 31.

[0030] When in use, when the bolt is inserted into the screw hole 3, due to the presence of the inclined hole 32, the bolt head can quickly enter the straight hole 31 along the guide of the inclined hole 32, and because the first central axis 311 intersects with the second central axis 321, the bolt head can quickly enter the straight hole 31 along the inclined hole 32. This structure is like an entrance with a guide path, and the inclined hole 32 facilitates the bolt to enter the straight hole 31. For example, imagine a container with an inclined slide, and the object (bolt) can smoothly enter the main part of the container (straight hole 31) along the slide (inclined hole 32). And because there is an angle between the first central axis 311 and the second central axis 321 and there is an angle between 12° and 15°, the bolt will be subjected to a certain pre-tightening force after entering the straight hole 31. This is like inserting a slightly inclined wedge into a hole, which will generate a lateral extrusion force, so that the nut 100 can quickly fit tightly with the bolt to achieve the function of rapid locking. This pre-tightening force can provide a certain connection tightness in the initial installation stage and reduce the possibility of subsequent loosening.

[0031] In other embodiments of the present application, the first central axis 311 and the second central axis 321 do not intersect, that is, the first central axis 311 and the second central axis 321 are not in the same plane. When subjected to vibration or external unstable force, the bolt is not prone to a simple loosening tendency in the screw hole 3. For example, compared with the intersecting situation, the skewed first central axis 311 and the second central axis 321 make the bolt in the screw hole 3 have more constraint directions, similar to a three-dimensional constraint structure, rather than a relatively simple two-dimensional constraint (intersecting situation). This complex constraint structure can effectively resist vibration and external forces from different directions, thereby improving the anti-loosening performance of the nut 100.

[0032] In this embodiment, the overlapping portion of the straight hole 31 and the inclined hole 32 is located near the midpoint of the straight hole 31, that is, the straight hole 31 and the inclined hole 32 cross-overlap. The overlapping portion of the straight hole 31 and the inclined hole 32 is defined as the first area S, and the straight hole 31 also includes a second area other than the first area. The thread 30 is arranged in the second area. In this way, when the bolt is inserted into the screw hole 3, in the initial screw-in stage, the bolt can smoothly enter the first area of ​​the straight hole 31 along the inclination angle of the inclined hole 32, and the inclined hole 32 plays a good guiding and transition role, reducing the jamming and friction resistance during the insertion process, making the installation operation more convenient and fast. Moreover, since the overlapping position is near the midpoint of the straight hole 31, during the further tightening of the bolt, as the bolt goes deeper into the straight hole 31, the contact length of the thread 30 formed between the upper and lower ends of the straight hole 31 is relatively uniform, which can evenly disperse the axial tension and torque, and reduce the loosening of the nut 100 or the damage of the thread 30 due to uneven force.

[0033] See also Figure 5In another embodiment of the present application, a plurality of stripes 322 are arranged in intervals in the inclined hole 32, and the plurality of stripes 322 are arranged in parallel and spaced apart, and the plurality of stripes 322 extend in intervals along the direction of the second central axis 321, and the end of each stripe 322 is smoothly connected to a thread tooth of the thread 30. In this way, during the installation process of the nut 100 and the screw, the presence of the stripes 322 reduces the contact area between the screw and the inner wall of the inclined hole 32, and further increases the sliding speed of the nut 100 on the screw. Thus, the nut 100 can be moved to a predetermined position on the screw more quickly. Since the stripes 322 are connected to the thread teeth, during the tightening process of the nut 100, the stripes 322 can play a guiding role, so that the nut 100 can be screwed in more accurately along the thread track of the screw, reducing problems such as loose connection or uneven force caused by installation deviation.

[0034] In this embodiment, the inner diameter D1 of the straight hole 31 is larger than the inner diameter D2 of the inclined hole 32. The inner diameter D1 of the straight hole 31 is 18 mm to 22 mm, and the inner diameter D2 of the inclined hole 32 is 12 mm to 16 mm. Preferably, the inner diameter of the straight hole 31 is 20 mm, and the inner diameter of the inclined hole 32 is 14 mm. When installing the bolt, the straight hole 31 with a larger inner diameter provides a relatively loose initial entry space for the bolt, which facilitates the rapid alignment and insertion of the bolt. The inclined hole 32 with a smaller inner diameter plays a guiding and limiting role in the process of the bolt entering the straight hole 31, ensuring that the bolt can accurately enter the straight hole 31 along the predetermined path, reducing the damage to the thread 30 or poor connection caused by insertion deviation.

[0035] In this embodiment, the height of the straight hole 31 is greater than 30 mm. The thread 30 is arranged on the inner wall of the straight hole 31. The stroke of the thread 30 along the direction of the first central axis 311 is greater than 30 mm. The pitch of the thread 30 is 1.6 to 2.0 mm. The thread 30 has 11 to 15 threads for every 13.7 mm (i.e., 1 / 2 inch) of stroke. Preferably, the thread 30 has 13 threads for every 13.7 mm of stroke. In this way, due to the longer stroke of the thread 30 and the reasonable number of threads distributed within a specific stroke, the contact area between the nut 100 and the thread 30 is increased when it is matched with the bolt. More threads participate in the force, which can more evenly disperse the axial tension and torque. When facing a large external load, the pressure on each thread is relatively reduced, thereby reducing the risk of deformation, wear or damage of a single thread. It plays an important role in dealing with the technical problem that traditional quick nuts are easy to loosen under high vibration or uneven installation surface conditions. The higher straight hole 31 height provides a deeper force range, which increases the meshing range between the bolt and the thread 30. When subjected to uneven force caused by vibration, impact or uneven installation surface, the nut 100 can still maintain a high fastening strength and anti-loosening performance. In other words, the higher straight hole 31 depth not only ensures that the thread 30 can share the load more evenly, but also reduces the probability of the bolt loosening under long-term vibration environment.

[0036] In this embodiment, a plurality of anti-skid grooves 211 are provided on the surface of one side of the outer sleeve 21 away from the nut body 1, and the extension direction of the anti-skid grooves 211 is parallel to the first central axis 311. The anti-skid grooves 211 are used to increase the friction between the nut seat 2 and the installation tool or the contact surface. When a tool such as a wrench is used to screw the nut, the anti-skid grooves 211 can effectively prevent the tool from slipping, so that the screwing force can be more stably transmitted to the nut 100, ensuring that the nut 100 can be smoothly tightened or loosened, especially in a humid, oily or other working environment that is prone to slipping. The effect of this anti-skid design is more significant. At the same time, after the nut is installed, if it is subjected to vibration or external force impact, the anti-skid grooves 211 can also enhance the friction between the nut seat 2 and the installation plane, reduce the possibility of the nut loosening, and further improve the stability of the connection.

[0037] In this embodiment, the first end 11 of the nut body 1 is provided with two notches 113, and the two notches 113 are symmetrically arranged. The two notches 113 are used to facilitate the insertion of auxiliary tools for special operations. For example, in some narrow spaces or in cases where it is difficult to directly use a conventional wrench, a special thin-sheet tool can be inserted into the notch 113, and the nut body 1 can be driven to rotate by rotating the tool to achieve the installation or removal of the nut. In addition, the two notches 113 can also be used as marks or positioning points. In the assembly of certain specific mechanical structures, it is convenient to determine the correct installation direction or angle of the nut 100, ensure that the assembly accuracy and performance of the entire mechanical system meet the requirements, and improve the efficiency and accuracy of the assembly process.

[0038] In addition, those skilled in the art should recognize that the above embodiments are only used to illustrate the present application, and are not intended to limit the present application. As long as they are within the spirit of the present application, appropriate changes and modifications to the above embodiments are within the scope of the present application.

Claims

1. A reinforced quick nut, characterized in that: include: A nut body, wherein the nut body has a first surface and a second surface arranged opposite to each other, a screw hole penetrating the first surface and the second surface is provided inside the nut body, the inner wall of the screw hole has a thread, the screw hole includes a straight hole and an inclined hole partially overlapping with the straight hole, the straight hole has a first central axis, the inclined hole has a second central axis, the first central axis is perpendicularly arranged to the first surface, the second central axis is inclined to the first central axis, and the height of the straight hole along the direction of the first central axis is greater than 30 mm.

2. The reinforced quick nut according to claim 1, characterized in that: The thread is arranged on the inner wall of the straight hole, and the pitch of the thread is 1.6 to 2.0 mm.

3. The reinforced quick nut according to claim 1, characterized in that: The included angle between the first central axis and the second central axis is 12° to 15°.

4. The reinforced quick nut according to claim 3, characterized in that: The included angle between the first central axis and the second central axis is 13.5°.

5. The reinforced quick nut according to claim 1, characterized in that: The inner diameter of the straight hole is 18 mm to 22 mm, and the inner diameter of the inclined hole is 12 mm to 16 mm.

6. The reinforced quick nut according to claim 1, characterized in that: The reinforced quick nut also includes a seat body, which includes an outer sleeve and a connecting portion. The outer sleeve is sleeved on the outer side of the connecting portion. The connecting portion is provided with a through hole, and the nut body is penetrated by the through hole.

7. The reinforced quick nut according to claim 6, characterized in that: A plurality of anti-skid grooves are arranged on a surface of one side of the outer sleeve away from the nut body, and an extending direction of the anti-skid grooves is parallel to the first central axis.

8. The reinforced quick nut according to claim 6, characterized in that: The first surface protrudes from the outer shell, and the second surface is located inside the outer shell.

9. The reinforced quick nut according to claim 8, characterized in that: One end of the nut body close to the first surface is provided with two notches, and the two notches are symmetrically arranged.

10. The reinforced quick nut according to claim 1, characterized in that: The reinforced quick nut is made of bearing steel.

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