Anti-loosening nut
By using a combination of screw and anti-loosening components in the anti-loosening nut, the extrusion effect of deformation notch and fixing protrusion is solved, and the problem of poor anti-loosening effect in the prior art is achieved, and the stability of the nut is achieved during mechanical operation Tighten.
Patent Information
- Application Number
- CN202411477375.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2024-12-31
AI Technical Summary
The existing anti-loosening nuts have poor anti-loosening effect due to vibration during mechanical operation. The nuts are prone to loosening and cannot be kept tight for a long period of time.
An anti-loosening nut is designed, which uses a screw and an anti-loosening component to combine. The anti-loosening component includes a sleeve and a nut body. The inner ring of the sleeve is equipped with a first screw groove, the outer ring is equipped with a second thread, and the nut body is equipped with Fixing the projection and deformation notch, when tightened by wrench, deformation of the deformation notch is changed, thread spacing is prevented from loosening.
It effectively prevents the nut from loosening due to vibration during mechanical operation, improves the anti-loosening effect, keeps the nut tight for a long period of time, and enhances the stability of the tightening.
Smart Images
Figure CN119222241A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of hardware parts and accessories, in particular to an anti-loosening nut. Background Art
[0002] Nuts are a common fastening device, usually used in conjunction with bolts. For fastening equipment, an important issue is how to achieve long-term fastening, that is, to prevent the nut from rotating relative to the bolt and prevent it from loosening. With the vigorous development of mechanical devices in my country, the mechanical mechanisms in many mechanical devices need to be assembled in a replaceable form. Bolts and nuts are the most widely used detachable fastening devices. The application of detachable fastening devices can greatly reduce the production difficulty of mechanical devices and improve the repair efficiency of mechanical devices.
[0003] In order to solve the problem of nut loosening, people have designed a lot of anti-loosening nuts or devices according to different application conditions and environments, such as double nuts. The loosening of double nuts is also called anti-loosening of top nuts. When the two top nuts are tightened, there is always interaction pressure between the two top nuts. If any of the two nuts needs to be rotated, it needs to overcome the friction between the screw threads. Therefore, it can play an anti-loosening role, but this method is not effective enough when dealing with vibrations caused by mechanical operation. High-frequency vibrations will be generated during mechanical operation, causing the top nut of the double nut to loosen first, and then the interaction pressure between the double nuts will be reduced or even disappear, resulting in a poor anti-loosening effect. Therefore, we propose an anti-loosening nut body to solve the above problems. Summary of the invention
[0004] The invention provides an anti-loosening nut, which solves the technical problem that the current anti-loosening nut has a poor anti-loosening effect.
[0005] In order to solve the above technical problems, the anti-loosening nut provided by the present invention includes a screw rod, a first thread is provided on the screw rod, an anti-loosening component is arranged on the screw rod, the anti-loosening component is threadedly connected to the screw rod, a nut body is provided on the anti-loosening component, the nut body is threadedly connected to the anti-loosening component, a deformation notch is provided on one side of the anti-loosening component, an annular inclined surface is provided on the top of the anti-loosening component, a fixing protrusion is provided in the nut body, and the fixing protrusion is fixed above the inner wall of the nut body.
[0006] Preferably, the anti-loosening component includes a sleeve, a first thread groove matching the first thread is opened on the inner ring of the sleeve, a wrench position is fixed on the bottom of the sleeve, a second thread is opened on the outer ring of the sleeve, the second thread matches the second thread groove in the nut body, the deformation notch is opened on one side of the sleeve, and an annular inclined surface is provided on the top of the sleeve.
[0007] The above technical solution is adopted: the anti-loosening component includes a sleeve, a first screw groove matching the first screw thread is provided on the inner ring of the sleeve, a wrench position is fixed on the bottom of the sleeve, a second screw thread is provided on the outer ring of the sleeve, the second screw thread matches the second screw groove in the nut body, the deformation notch is provided on one side of the sleeve, and an annular inclined surface is provided on the top of the sleeve. When achieving the anti-loosening effect, the wrench is first clamped in the wrench position and tightened, the sleeve with the first screw groove is threadedly connected to the screw with the first screw thread, and then the nut body is sleeved on the sleeve. Since the outer ring of the sleeve has a screw thread matching the screw thread in the nut body, The second thread that matches the circle is used, so the nut body is tightened on the sleeve with a wrench. When the nut body is tightened on the sleeve, the fixed protrusion in the nut body will squeeze the annular inclined surface, so that the deformation notch is deformed downward. During the deformation notch downward, the pitch between the first screw groove in the inner ring of the sleeve and the first thread on the screw changes, so that the sleeve will not loosen and fall off from the screw with the first thread. During the tightening of the nut body, the pitch between the second screw groove in the nut body and the second thread of the outer ring of the sleeve also changes, so that the nut body will not loosen and fall off from the sleeve with the second thread.
[0008] Preferably, the fixing protrusion is in any one of a spherical shape and a columnar shape.
[0009] By adopting the above technical solution, the fixing protrusion is either spherical or columnar, and the spherical or columnar fixing protrusion can squeeze the top of the anti-loosening component when the nut body is tightening the loosening component, so that the deformation notch is deformed downward.
[0010] Preferably, the fixing protrusion is welded to the inner wall of the nut body.
[0011] The above technical solution is adopted: the fixing protrusion is welded to the inner wall of the nut body, and the welding makes the fixing protrusion in the nut body more firmly fixed, so that the fixing protrusion will not break from the inner wall of the nut body when the top of the anti-loosening component is squeezed.
[0012] Preferably, the protrusion length of the fixing protrusion on the inner wall of the nut body is smaller than the difference between the outer ring radius of the sleeve and the inner ring radius of the sleeve.
[0013] The above technical solution is adopted: the protrusion length of the fixed protrusion on the inner wall of the nut body is smaller than the difference between the outer ring radius of the sleeve and the inner ring radius of the sleeve, so that when the nut body is tightened, the fixed protrusion on the inner wall of the nut body can squeeze the annular inclined surface at the top of the sleeve to cause the deformation notch to deform without interfering with the screw to hinder the nut body during the tightening process.
[0014] Preferably, the wrench position is hexagonal.
[0015] By adopting the above technical solution, the wrench position is hexagonal, which can better adapt to wrenches on the market and facilitate better matching between the wrench and the wrench position.
[0016] Preferably, the deformation notch is opened on the sleeve close to the annular inclined surface.
[0017] By adopting the above technical solution, the deformation notch is opened on the sleeve close to the annular inclined surface. When the deformation notch is close to the annular inclined surface, the deformation notch is more likely to deform when the annular inclined surface is squeezed.
[0018] Preferably, the deformation notch gradually decreases from outside to inside on the sleeve.
[0019] By adopting the above technical solution, the deformation gap is gradually reduced from the outside to the inside on the sleeve, making it easier for the deformation gap to deform.
[0020] Preferably, the annular inclined surface gradually rises along the circumference of the sleeve.
[0021] By adopting the above technical solution, the annular inclined surface gradually rises along the circumference of the sleeve, so that the fixing protrusion can move more smoothly along the annular inclined surface.
[0022] Preferably, the height of the fixing protrusion on the inner wall of the nut body is the same as the height of the sleeve.
[0023] The above technical solution is adopted: the height of the fixing protrusion on the inner wall of the nut body is the same as the height of the sleeve. When the nut body is tightened to the bottom on the sleeve, the fixing protrusion can squeeze the annular inclined surface. In the process of the deformation notch deforming downward, the final annular inclined surface moves downward to make the top of the sleeve flat.
[0024] Compared with the related art, the present invention has the following beneficial effects: 1. Compared with the traditional anti-loosening nut, the present invention is provided with an anti-loosening component, a first screw groove matching the first screw thread is provided on the inner ring of the sleeve, a wrench position is fixed on the bottom of the sleeve, a second screw thread is provided on the outer ring of the sleeve, the second screw thread matches the second screw groove in the nut body, a deformation notch is provided on one side of the sleeve, and an annular inclined surface is provided on the top of the sleeve. When achieving the anti-loosening effect, the wrench is firstly clamped in the wrench position and tightened, the sleeve with the first screw groove is threadedly connected to the screw with the first screw thread, and then the nut body is sleeved on the sleeve. Since the outer ring of the sleeve is provided with a second screw groove matching the inner ring of the nut body, Second thread, so use a wrench to tighten the nut body on the sleeve. When the nut body is tightened on the sleeve, the fixed protrusion in the nut body will squeeze the annular inclined surface, so that the deformation notch is deformed downward. In the process of the deformation notch deforming downward, the pitch between the first screw groove of the inner ring of the sleeve and the first thread on the screw changes, so that the sleeve will not loosen and fall off from the screw with the first thread. In the process of tightening the nut body, the pitch between the second screw groove in the nut body and the second thread of the outer ring of the sleeve also changes, so that the nut body will not loosen and fall off from the sleeve with the second thread. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a schematic diagram of the structure of the anti-loosening nut; Figure 2 This is a bottom view of the anti-loosening nut; Figure 3 This is a connection diagram for preventing the nut from loosening; Figure 4 This is a partial cross-sectional structural diagram of the anti-loosening nut; Figure 5 This is the structural diagram of the anti-loosening component in the anti-loosening nut; Figure 6 This is a structural diagram of the nut body in an anti-loosening nut.
[0026] Numbers in the figure: 1, screw; 11, first thread; 2, anti-loosening component; 21, wrench position; 22, second thread; 23, deformation notch; 24, annular inclined surface; 25, first screw groove; 26, sleeve; 3, nut body; 31, second screw groove; 32, fixing protrusion. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0028] Embodiment 1
[0029] like Figure 1-Figure 5 As shown, the anti-loosening nut comprises a screw 1, a first thread 11 is provided on the screw 1, an anti-loosening component 2 is arranged on the screw 1, the anti-loosening component 2 is threadedly connected to the screw 1, a nut body 3 is arranged on the anti-loosening component 2, the nut body 3 is threadedly connected to the anti-loosening component 2, a deformation notch 23 is provided on one side of the anti-loosening component 2, the radial depth of the deformation notch 23 at the anti-loosening component 2 is less than the radius of the anti-loosening component 2, the axial width of the deformation notch 23 at the anti-loosening component 2 is at least one pitch, an annular inclined surface 24 is provided on the top of the anti-loosening component 2, a fixing protrusion 32 is provided in the nut body 3, and the fixing protrusion 32 is fixed above the inner wall of the nut body 3; The screw rod 1 is provided with an anti-loosening component 2, which is threadedly connected to the screw rod 1, and a nut body 3 is provided on the anti-loosening component 2, which is threadedly connected to the anti-loosening component 2. A deformation notch 23 is provided on one side of the anti-loosening component 2, and an annular inclined surface 24 is provided on the top of the anti-loosening component 2. A fixing protrusion 32 is provided in the nut body 3, and the fixing protrusion 32 is fixed above the inner wall of the nut body 3. When achieving the anti-loosening effect, firstly use a wrench to thread the anti-loosening component 2 on the screw rod 1 with the first thread 11 and tighten it, then use a wrench to sleeve the nut body 3 on the anti-loosening component 2, and use a wrench to tighten the nut body 3 on the anti-loosening component 2. When the nut body 3 is tightened, When the body 3 is tightened on the anti-loosening component 2, the fixed protrusion 32 in the nut body 3 will squeeze the annular inclined surface 24, so that the deformation notch 23 is deformed downward. When the deformation notch 23 is deformed downward, the pitch between the first screw groove 25 of the inner ring of the anti-loosening component 2 and the first thread 11 on the screw 1 changes, so that the anti-loosening component 2 will not loosen and fall off from the screw 1 with the first thread 11. When the nut body 3 is tightened, the pitch between the second screw groove 31 in the nut body 3 and the second thread 22 on the anti-loosening component 2 also changes, so that the nut body 3 will not loosen and fall off from the anti-loosening component 2.
[0030] Embodiment 2
[0031] like Figure 1-Figure 5As shown, the anti-loosening component 2 includes a sleeve 26, a first screw groove 25 that matches the first screw thread 11 is opened on the inner ring of the sleeve 26, a wrench position 21 is fixed to the bottom of the sleeve 26, a second screw thread 22 is opened on the outer ring of the sleeve 26, the second screw thread 22 matches the second screw groove 31 in the nut body 3, the deformation notch 23 is opened on one side of the sleeve 26, the top of the sleeve 26 is provided with an annular inclined surface 24, the fixing protrusion 32 is any one of spherical and columnar, the fixing protrusion 32 is welded to the inner wall of the nut body 3, the protrusion length of the fixing protrusion 32 on the inner wall of the nut body 3 is less than the difference between the outer ring radius of the sleeve 26 and the inner ring radius of the sleeve 26, the wrench position 21 is hexagonal, the deformation notch 23 on the sleeve 26 is opened near the annular inclined surface 24, the deformation notch 23 is in the sleeve 26 The opening on the nut body 3 is close to the annular inclined surface 24. When the deformation notch 23 is close to the annular inclined surface 24, the deformation notch 23 is more likely to deform when the annular inclined surface 24 is squeezed. The deformation notch 23 gradually shrinks from the outside to the inside on the sleeve 26, making it easier for the deformation notch 23 to deform. The annular inclined surface 24 gradually rises along the circumference of the sleeve 26, making it smoother for the fixing protrusion 32 to move along the annular inclined surface 24. The height of the fixing protrusion 32 on the inner wall of the nut body 3 is the same as the height of the sleeve 26. When the nut body 3 is tightened to the bottom on the sleeve 26, the fixing protrusion 32 can squeeze the annular inclined surface 24. In the process of the deformation notch 23 deforming downward, the final annular inclined surface 24 moves downward to make the top of the sleeve 26 straight. The spherical and columnar fixing protrusions 32 can squeeze the top of the anti-loosening component 2 when the nut body 3 is tightening the loosening component, so that the deformation notch 23 is deformed downward. The fixing protrusions 32 are welded to the inner wall of the nut body 3. Welding makes the fixing of the fixing protrusions 32 in the nut body 3 more firmly, so that the fixing protrusions 32 will not break from the inner wall of the nut body 3 when squeezing the top of the anti-loosening component 2. The protruding length of the fixing protrusion 32 on the inner wall of the nut body 3 is smaller than the difference between the outer circle radius of the sleeve 26 and the inner circle radius of the sleeve 26, so that when the nut body 3 is tightened, the fixing protrusion 32 on the inner wall of the nut body 3 can squeeze the annular inclined surface 24 at the top of the sleeve 26 to deform the deformation notch 23 without interfering with the screw rod 1 to hinder the nut body 3 during the tightening process. The wrench position 21 is hexagonal, which is better adapted to the wrenches on the market and facilitates better cooperation between the wrench and the wrench position 21.
[0032] Working principle: Figure 1-5As shown, when achieving the anti-loosening effect, firstly clamp the wrench in the wrench position 21 of the anti-loosening component 2 and tighten it, and thread the sleeve 26 with the first screw groove 25 to the screw 1 with the first thread 11, and then sleeve the nut body 3 on the sleeve 26. Since the outer ring of the sleeve 26 is provided with a second thread 22 that matches the inner ring of the nut body 3, the nut body 3 is tightened on the sleeve 26 with a wrench. When the nut body 3 is tightened on the sleeve 26, the fixing protrusion 32 in the nut body 3 will squeeze the annular inclined surface 24. As a result, the deformation notch 23 is deformed downward. During the deformation of the deformation notch 23 downward, the pitch between the first screw groove 25 of the inner ring of the sleeve 26 and the first thread 11 on the screw 1 changes, so that the sleeve 26 will not loosen and fall off from the screw 1 with the first thread 11. During the tightening process of the nut body 3, the pitch between the second screw groove 31 in the nut body 3 and the second thread 22 of the outer ring of the sleeve 26 also changes, so that the nut body 3 will not loosen and fall off from the sleeve 26 with the second thread 22.
[0033] like Figure 6 As shown, a protrusion mounting hole 33 is provided on the wall thickness of the nut body 3, and the inner hole of the protrusion mounting hole 33 has a constriction, the fixed protrusion 32 is a spherical body and its diameter is larger than the minimum inner diameter of the constriction, at least a part of the fixed protrusion 32 is installed in the protrusion mounting hole 33, and the remaining part of the fixed protrusion 32 extends into the nut body 3 from the constriction, for example, 2 / 5 of the fixed protrusion 32 extends into the nut body 3, that is, the remaining part of the fixed protrusion 32 will exceed the inner wall of the nut body 3.
[0034] Secondly, a counter screw threadedly connected to the protrusion installation through hole 33 is provided at the outer opening of the protrusion installation through hole 33. When the nut body 3 is locked, the inner end of the counter screw only contacts the fixed protrusion 32, and the fixed protrusion 32 contacts the annular inclined surface 24 so that the fixed protrusion 32 is in a rolling state. When the nut body 3 is locked in place, the counter screw is tightened again and the fixed protrusion 32 has more parts extending into the nut body 3. Since the fixed protrusion 32 is a spherical structure, as the diameter of the fixed protrusion 32 expands, the annular inclined surface 24 is pressed downward, and the pitch of the thread changes, thereby achieving the purpose of self-locking. When the nut body 3 is locked in place, the fixed protrusion 32 is at the highest position of the annular inclined surface 24.
[0035] In addition, the deformation notch 23 divides at least part of the nut body 3 into a main body and a cantilever deformation part. The outer walls and inner walls of the main body and the cantilever deformation part have continuous threads. A smooth surface 27 is reserved on the top periphery of the cantilever deformation part. A second protrusion mounting hole 34 located below the protrusion mounting through hole is also provided on the wall thickness of the nut body 3. A fixed protrusion 32 or a spherical body 35 is placed in the second protrusion mounting hole 34, and a bolt is threadedly connected in the second protrusion mounting hole 34. The inner end plane of the bolt is tangent to the spherical body. The spherical body is contacted with the smooth surface by tightening the bolt. During the locking process of the nut body 3, the spherical body contacts the smooth surface and corrects the roundness of the smooth surface, so that the internal and external threads of the anti-loosening component 2 have a certain degree of roundness correction. After correction, the bolt retreats outward to allow the spherical body to move freely.
[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An anti-loosening nut, comprising a screw (1), on which a first thread (11) is formed, characterized in that The screw rod (1) is provided with an anti-loosening component (2), and the anti-loosening component (2) is threadedly connected to the screw rod (1). The anti-loosening component (2) is provided with a nut body (3), and the nut body (3) is threadedly connected to the anti-loosening component (2). A deformation notch (23) is provided on one side of the anti-loosening component (2), and an annular inclined surface (24) is provided on the top of the anti-loosening component (2). A fixing protrusion (32) is provided in the nut body (3), and the fixing protrusion (32) is fixed above the inner wall of the nut body (3).
2. The anti-loosening nut according to claim 1, characterized in that: The anti-loosening component (2) comprises a sleeve (26), a first screw groove (25) matching the first screw thread (11) is provided on the inner ring of the sleeve (26), a wrench position (21) is fixed on the bottom of the sleeve (26), a second screw thread (22) is provided on the outer ring of the sleeve (26), the second screw thread (22) matches the second screw groove (31) in the nut body (3), the deformation notch (23) is provided on one side of the sleeve (26), and an annular inclined surface (24) is provided on the top of the sleeve (26).
3. The anti-loosening nut according to claim 1, characterized in that: The fixing protrusion (32) is in any one of a spherical shape and a columnar shape.
4. The anti-loosening nut according to claim 1, characterized in that: The fixing protrusion (32) is welded to the inner wall of the nut body (3).
5. The anti-loosening nut according to claim 1, characterized in that: The protruding length of the fixing protrusion (32) on the inner wall of the nut body (3) is smaller than the difference between the outer circle radius of the sleeve (26) and the inner circle radius of the sleeve (26).
6. The anti-loosening nut according to claim 2, characterized in that: The wrench position (21) is hexagonal.
7. The anti-loosening nut according to claim 2, characterized in that: The deformation notch (23) is opened on the sleeve (26) close to the annular inclined surface (24).
8. The anti-loosening nut according to claim 2, characterized in that: The deformation notch (23) gradually decreases from the outside to the inside on the sleeve (26).
9. The anti-loosening nut according to claim 2, characterized in that: The annular inclined surface (24) gradually rises along the circumference of the sleeve (26).
10. The anti-loosening nut according to claim 1, characterized in that: The height of the fixing protrusion (32) on the inner wall of the nut body (3) is the same as the height of the sleeve (26).