Locking nut with drainage structure

Abstract

The utility model discloses a take drainage structure lock nut, including nut body, hexagonal base, screw hole, annular installation groove, nylon washer, elastic card piece and spacing slot, the below of nut body is integrative with hexagonal base, the inside center of hexagonal base is equipped with screw hole, the inside of screw hole is open with the nut body, the inside below of nut body and the junction of hexagonal base is equipped with annular installation groove, the annular installation groove is installed with nylon washer, the lower end surface of nylon washer is equipped with a plurality of elastic card pieces, the upper end surface of hexagonal base is equipped with a plurality of spacing slots corresponding with elastic card piece, the outside wall of nylon washer is equipped with a plurality of drainage groove, the drainage groove is square structure, and drainage groove is annular equidistance distribution, the utility model discloses can be better to bear vibration and impact load under the synergic cooperation of elastic card tongue and spacing slot, and simple portable is installed simultaneously.

Description

Technical Field

[0001] This utility model relates to the technical field of fasteners, and in particular to the technical field of a locking nut with a drainage structure. Background Technology

[0002] Lock nuts are fasteners designed with special structures or materials to prevent loosening. They are widely used in machinery manufacturing, aerospace, automotive industries and other fields. Their core function is to improve the reliability of threaded connections against loosening.

[0003] However, when the existing nuts are installed and turned, the bolt will hit the nylon washer. Because the clamping force of the nylon washer on the upper end of the outer hexagon is insufficient, it is easy to rotate, which leads to assembly difficulties. The connection between ordinary nuts and bolts is also relatively easy to loosen and come off when subjected to a certain impact, and the self-locking ability is poor.

[0004] To address the problems mentioned above, for example, application number CN201520172530.4 discloses a nylon locking nut, including a hexagonal nut body and an annular structure. The annular structure is located at the upper end of the hexagonal nut body, and the hexagonal nut body and the annular structure are integrally formed. The hexagonal nut body has a threaded hole inside. When the nut is screwed into the bolt, after the locking force increases, the nylon is embedded in the bolt components. The locked nylon washer fills the gap between the two ends of the bolt, thereby achieving the locking effect. The locked nut cannot be unscrewed, is vibration resistant, and has strong anti-loosening ability. The nylon washer and the annular groove are locked together by a groove, further increasing the nut's self-locking ability.

[0005] However, although the above structure uses locking force to embed the nylon into the bolt components, the nuts are widely used in large mechanical equipment, and therefore are subject to large dynamic loads, which can easily cause the nylon washer to fall off. This results in low anti-loosening performance of the structure. At the same time, the nylon washer in the above structure fills the gap between the bolts at both ends. Therefore, in extreme weather, moisture cannot be discharged quickly, which can easily lead to rust.

[0006] To address the problems mentioned above, for example, application number CN202421094943.0 discloses a nylon locking nut, including a nut body, a nut inner seat, a mounting groove, a nylon ring, a nut base, and a limiting component. The nut inner seat is located at the lower interior of the nut body, and the mounting groove for the nylon ring to engage is located at the upper interior of the nut body. The outer side wall of the nylon ring is tightly fitted against the inner side wall of the nut body. The nut base is connected to the lower exterior of the nut body, and the limiting component is symmetrically arranged on the nylon ring. The combined use of the hole, threaded hole, and limiting component can improve the anti-loosening performance of the nut body. First, the nylon ring is inserted into the nut body through the mounting groove. Then, the limiting rod is inserted into the through hole on the nylon ring and then through the through hole into the threaded hole on the inner seat of the nut. Then, the rotating head is rotated, which drives the limiting rod to rotate until the limiting rod is fully screwed into the threaded hole. The external thread on the limiting rod is threadedly connected to the threaded hole, thereby improving the firmness between the nylon ring and the nut body, preventing the nylon ring from coming out, and increasing the anti-loosening performance.

[0007] However, the above structure still has the following drawbacks: The above structure requires inserting the nylon ring into the mounting groove, then manually inserting the limiting rod into the through hole of the nylon ring, and finally rotating the rotating head to screw it into the threaded hole on the nut to achieve limiting and fixing. This operation is cumbersome and significantly increases assembly time and cost. Moreover, the external thread on the limiting rod and the threaded hole are threaded connections. Under severe dynamic loads, the threaded connection may loosen or shear break. Once the limiting rod fails, not only will the anti-fall-off function be lost, but the detached metal parts may also cause secondary damage to the mechanical equipment. Summary of the Invention

[0008] The purpose of this invention is to solve the problems in the prior art by proposing a locking nut with a drainage structure. Through the coordinated cooperation of the elastic tongue and the limiting groove, it can better withstand vibration and impact loads, while being simple and portable to install.

[0009] To achieve the above objectives, this utility model proposes a locking nut with a drainage structure, comprising a nut body, a hexagonal base, a threaded hole, an annular mounting groove, a nylon washer, elastic clips, and limiting grooves; the lower part of the nut body is integrally formed with a hexagonal base, and the center of the hexagonal base has a threaded hole that communicates with the interior of the nut body; the lower part of the nut body, at the connection point with the hexagonal base, has an annular mounting groove, on which a nylon washer is installed; the lower end face of the nylon washer has several elastic clips, and the upper end face of the hexagonal base has several limiting grooves corresponding to the elastic clips.

[0010] Preferably, the outer wall of the nylon washer is provided with a plurality of drainage grooves, the drainage grooves having a square structure and being distributed in a ring at equal intervals.

[0011] Preferably, the elastic latch is an elastic tab, and the number of elastic tabs is four, which are distributed in a ring at equal intervals.

[0012] Preferably, the elastic latch is divided into a vertical end and a snap-fit ​​end, with the snap-fit ​​end integrally formed at the lower end of the vertical end. The vertical end has a square structure, and the snap-fit ​​end has a triangular structure.

[0013] Preferably, the number of the limiting slots is four, and the four limiting slots are distributed in a ring with equal spacing.

[0014] Preferably, the limiting slot is divided into a vertical slot and a snap-fit ​​slot, the vertical slot and the snap-fit ​​slot are interconnected, and the vertical slot and the snap-fit ​​slot are respectively adapted to the vertical end and the snap-fit ​​end.

[0015] The beneficial effects of this utility model are: 1. This utility model, through the coordinated cooperation of the elastic latch and the limiting slot, can better withstand vibration and impact loads, and only requires two parts for clamping, which greatly simplifies the assembly process and significantly reduces assembly time and production costs; 2. This utility model eliminates the risk of breakage due to shearing by eliminating the slender metal rod and replacing it with a short and thick elastic tongue on the nylon washer and a limiting groove on the hexagonal base. Even in extreme cases where the nylon washer is damaged, it will not cause secondary damage to the surrounding mechanical equipment as a non-metallic part. 3. By adding a drainage groove, this utility model can prevent some moisture from remaining inside the nut body. When the nut body encounters extreme weather during use, the moisture can flow out from the drainage groove on the outer wall of the nylon washer, preventing some moisture from remaining and causing the nut body to rust, thereby extending the service life of the nut body. Attached Figure Description

[0016] Figure 1 This is a front view of a locking nut with a drainage structure according to this utility model; Figure 2 This is a schematic diagram of a nylon washer with a drainage structure locking nut according to the present invention; Figure 3 This is a schematic diagram of the connection between a nylon washer and an elastic latch for a locking nut with a drainage structure according to this utility model. Figure 4 This is an enlarged schematic diagram of the elastic latch of a locking nut with a drainage structure according to this utility model; Figure 5This is a schematic diagram of the upper end of a hexagonal base with a locking nut featuring a drainage structure according to this utility model; Figure 6 This is a schematic diagram of a limiting groove for a locking nut with a drainage structure according to this utility model; Figure 7 This is a schematic diagram of an annular mounting groove for a locking nut with a drainage structure according to this utility model; In the diagram: 1-nut body, 2-hexagonal base, 3-threaded hole, 4-annular mounting groove, 5-nylon washer, 501-drain groove, 6-elastic clip, 601-elastic tongue, 6011-vertical end, 6012-clamping end, 7-limiting groove, 7011-vertical groove, 7012-clamping groove. Detailed Implementation

[0017] See Figure 1 This utility model discloses a locking nut with a drainage structure, comprising a nut body 1, a hexagonal base 2, a threaded hole 3, an annular mounting groove 4, a nylon washer 5, an elastic retainer 6, and a limiting groove 7. The hexagonal base 2 is integrally formed at the lower part of the nut body 1. A threaded hole 3 is formed at the center of the hexagonal base 2, communicating with the interior of the nut body 1. An annular mounting groove 4 is provided at the lower part of the nut body 1 where it connects to the hexagonal base 2. A nylon washer 5 is mounted on the annular mounting groove 4, and several elastic retainers are provided on the lower end face of the nylon washer 5. The elastic locking component 6 has several limiting slots 7 on the upper surface of the hexagonal base 2 corresponding to the elastic locking component 6. The nylon washer 5 is fixed by the cooperation between the elastic locking component 6 at its lower end and the limiting slots 7 on the upper surface of the hexagonal base 2, rather than relying on additional limiting rods or other parts. During assembly, the operator applies pressure to make the elastic locking component 6 elastically deform and then lock into the limiting slots 7. The elastic restoring force of the nylon material achieves mechanical self-locking. Only two parts are needed for locking, which greatly simplifies the assembly process and significantly reduces assembly time and production costs.

[0018] See Figure 2 The outer wall of the nylon washer 5 is provided with a number of drainage grooves 501. The drainage grooves 501 are square in structure and are distributed in a ring at equal intervals. The square drainage grooves 501 on the outer wall of the nylon washer 5 form a free channel for liquid to pass through. When the nut body 1 is in a humid or liquid environment, the liquid can be quickly discharged through the drainage grooves 501 to avoid accumulation and thus extend the service life of the nut body 1.

[0019] See Figure 3The elastic locking element 6 is an elastic latch 601, and there are four elastic latches 601. The four elastic latches 601 are distributed in a ring with equal spacing. By limiting the elastic locking element 6 to four elastic latches 601 that are evenly distributed in a ring, the multiple elastic latches 601 work together to balance the force and ensure that the nylon washer 5 is evenly fixed, preventing damage or tilting of the washer due to excessive force on a single point. The evenly distributed elastic latches 601 can provide a stable and symmetrical clamping force. The structure of four elastic latches 601 makes assembly simpler and enhances the reliability of the connection and vibration resistance.

[0020] See Figure 4 The elastic latch 601 is divided into a vertical end 6011 and a locking end 6012. The locking end 6012 is integrally formed at the lower end of the vertical end 6011. The vertical end 6011 has a square structure, and the locking end 6012 has a triangular structure. The vertical end 6011 provides the main guide and elastic deformation part, guiding the elastic latch 601 into the limiting groove 7. The triangular locking end 6012 forms an inclined surface. During assembly, the inclined surface is squeezed, forcing the elastic latch 601 to deform. After the locking end 6012 slides past the edge of the limiting groove 7, it rebounds quickly due to elasticity and locks in, thus forming a mechanical interlocking effect. During disassembly, the back of the triangular structure can also provide a blocking surface, requiring a large force to deform the elastic latch 601 again and remove it, thus playing a role in preventing it from falling out.

[0021] See Figure 5 The number of limiting slots 7 is four, and the four limiting slots 7 are distributed in a ring with equal spacing. The number of limiting slots 7 corresponds to the number of elastic latches 601, providing a precise snap-fit ​​position for the elastic latches 601. This ensures that the elastic latches 601 can be accurately and smoothly snapped in and fixed. This one-to-one positional relationship ensures uniform force distribution. On the one hand, it avoids the assembly difficulties caused by too few limiting slots 7, and on the other hand, it avoids the problem of weakening the structural strength of the hexagonal base 2 due to too many limiting slots 7.

[0022] See Figure 6 The limiting slot 7 is divided into a vertical slot 7011 and a locking slot 7012. The vertical slot 7011 and the locking slot 7012 are interconnected, and the vertical slot 7011 and the locking slot 7012 are respectively adapted to the vertical end 6011 and the locking end 6012, so that the elastic latch 601 can be properly embedded and locked in the limiting slot 7, thereby effectively preventing it from falling off. At the same time, it is simple and convenient to operate and has strong practicality.

[0023] The working process of this utility model: In operation, the nut body 1 of this utility model, a locking nut with a drainage structure, is tightened onto the bolt or mounting component by a screwdriver or other tool, providing the main preload force. The nylon washer 5 inside engages with the bolt thread, generating frictional resistance to prevent the nut body 1 from rotating. The nylon washer 5 is secured to the hexagonal base 2 of the nut body 1 by multiple elastic tabs 601 at its bottom. During assembly, the nylon washer 5 is simply pressed into the annular mounting groove 4 of the nut body 1. After further pressing, the inclined surface of the snapping end 6012 of the elastic tab 601 contacts the hexagonal base 2, causing elastic bending until it slides completely into the corresponding limiting groove 7 and springs back to lock, thus completing the permanent fixation.

[0024] During the use of the nut body 1, if liquid from the environment enters the interior of the nut body 1 and accumulates around the nylon washer 5, this liquid will quickly flow out through the annular drainage grooves 501 on the outside of the nylon washer 5, and cannot remain for a long time, thereby protecting the internal structure from damage such as corrosion or freezing, and extending the service life of the nut body 1.

[0025] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0026] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A locking nut with a drainage structure, characterized in that: The nut body (1), hexagonal base (2), threaded hole (3), annular mounting groove (4), nylon washer (5), elastic clip (6), and limiting groove (7) are included. The hexagonal base (2) is integrally formed on the lower part of the nut body (1). The threaded hole (3) is opened in the center of the hexagonal base (2). The threaded hole (3) communicates with the interior of the nut body (1). The annular mounting groove (4) is provided at the lower part of the interior of the nut body (1) and at the connection with the hexagonal base (2). The nylon washer (5) is installed on the annular mounting groove (4). Several elastic clips (6) are provided on the lower end face of the nylon washer (5). Several limiting grooves (7) corresponding to the elastic clips (6) are opened on the upper end face of the hexagonal base (2).

2. A locking nut with a drainage structure as described in claim 1, characterized in that: The outer wall of the nylon gasket (5) is provided with a number of drainage grooves (501). The drainage grooves (501) are square in shape and are distributed in a ring at equal intervals.

3. A locking nut with a drainage structure as described in claim 1, characterized in that: The elastic clip (6) is an elastic tab (601), and there are four elastic tabs (601) in total. The four elastic tabs (601) are distributed in a ring with equal spacing.

4. A locking nut with a drainage structure as described in claim 3, characterized in that: The elastic latch (601) is divided into a vertical end (6011) and a snap-fit ​​end (6012). The snap-fit ​​end (6012) is integrally formed at the lower end of the vertical end (6011). The vertical end (6011) has a square structure, and the snap-fit ​​end (6012) has a triangular structure.

5. A locking nut with a drainage structure as described in claim 1, characterized in that: The number of the limiting slots (7) is four, and the four limiting slots (7) are distributed in a ring with equal spacing.

6. A locking nut with a drainage structure as described in claim 4, characterized in that: The limiting slot (7) is divided into a vertical slot (7011) and a snap-fit ​​slot (7012). The vertical slot (7011) and the snap-fit ​​slot (7012) are interconnected, and the vertical slot (7011) and the snap-fit ​​slot (7012) are respectively adapted to the vertical end (6011) and the snap-fit ​​end (6012).

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