Lock flange nut

Abstract

The utility model discloses an anti-loose flange nut which comprises a nut part and a flange pad surface. An internal threaded hole is formed in the nut part, the flange pad surface is fixed at the lower end of the nut part, and a tooth-shaped flange is arranged on the flange pad surface so as to increase the friction force between the flange pad surface and the end surface of a screw rod and prevent rotation relative to the screw rod; a mounting groove is fixed to the periphery of an upper port of the inner threaded hole in the flange pad face, an elastic ring is fixed in the mounting groove, the screw can be tightened and fixed through elastic contraction, and an anti-loose gear ring is stacked on the elastic ring and comprises a ring end face and a plurality of ratchets distributed in the inner circumferential direction of the ring end face. The ratchets obliquely and downwards extend towards the circle center of the lower end opening of the inner threaded hole, the ratchets are arranged at intervals, and under the cooperation of the fastening effect of the elastic ring, the ratchets of the anti-loosening tooth ring are tightly attached to the surface of the screw rod and can abut against the screw rod, the screw rod is prevented from loosening and reversing, and the flange nut is prevented from loosening and disengaging from the screw. And the safety and the stability of equipment applied to the anti-loosening flange nut are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of nut technology, and in particular to an anti-loosening flange nut. Background Technology

[0002] A flange nut is a type of nut with a flange at one end, which can be seen as an integrated washer on the nut. It is used to increase the contact area between the nut and the component, and to distribute the pressure generated by the nut evenly on the fixed component, thereby reducing the possibility of component damage. The nut part is generally similar in size and thread specification to that of a traditional hexagonal nut, and can be used for the connection between various different components.

[0003] Traditional flange nuts are prone to loosening under vibration or load changes. The flange nuts may rotate in the opposite direction and come off the screws or bolts, causing connection failure and affecting the safety and stability of the equipment.

[0004] To address the shortcomings of existing technology, corresponding improvements are needed to the flange nut. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide an anti-loosening flange nut to solve the above problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model provides an anti-loosening flange nut, which includes a nut part and a flange gasket surface.

[0008] The nut portion has an internal threaded hole for inserting a screw, the flange gasket is fixed to the lower end of the nut portion, and the flange gasket is provided with a toothed flange;

[0009] The flange gasket has a mounting groove fixed around the upper port of the internal threaded hole. An elastic ring is fixed in the mounting groove. An anti-loosening toothed ring is stacked on the elastic ring. The anti-loosening toothed ring includes multiple ratchet teeth arranged circumferentially around the ring end face and the inner circle of the ring end face. The ratchet teeth extend downwards towards the center of the lower port of the internal threaded hole. The multiple ratchet teeth are arranged at intervals to be wrapped around the outside of the screw to fasten the screw.

[0010] Preferably, the end of the ratchet tooth is arc-shaped.

[0011] Preferably, the elastic ring is a rubber ring, and the anti-loosening toothed ring is a metal ring.

[0012] Preferably, the toothed flange includes a plurality of teeth surrounding the flange gasket surface, the circumferential direction of which is opposite to the thread extension direction of the internal threaded hole.

[0013] Preferably, the nut portion and the flange gasket surface are integrally formed.

[0014] Preferably, the height of the ring end face is lower than the height of the toothed flange.

[0015] Preferably, the ring end extends downward to form a fixed edge that is sandwiched between the mounting groove and the elastic ring.

[0016] The technical effects achieved by this utility model include:

[0017] When the aforementioned anti-loosening flange nut is inserted into the screw, the elastic ring at the upper end of the internal threaded hole surrounds the screw. The screw can be tightly fixed by the elastic contraction ring. At the same time, under the tightening action of the elastic ring, the ratchet teeth of the anti-loosening tooth ring are tightly pressed against the surface of the screw. The ratchet teeth can abut against the threaded structure on the screw, preventing the screw from loosening and reversing. When the screw is inserted, it extends in the same direction as the ratchet teeth, so it will not cause installation obstruction. The screw is subjected to lateral tightening force and upper and lower pressure on the anti-loosening flange nut, which can effectively prevent the flange nut from loosening and detaching from the screw, avoid connection failure, and ensure the safety and stability of the applied equipment.

[0018] The toothed flange on the flange gasket surface can increase the friction between the anti-loosening flange nut and the end face of the screw, prevent the anti-loosening nut from rotating relative to the screw, and further prevent the nut and screw from loosening and falling off. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the anti-loosening flange nut provided in this embodiment of the utility model;

[0020] Figure 2 This is a structural breakdown diagram of the anti-loosening flange nut;

[0021] Figure 3 This is a structural diagram of the lower port of the internal threaded hole in the anti-loosening flange nut.

[0022] The reference numerals in the above figures are as follows:

[0023] Nut part 1, internal threaded hole 10, elastic ring 11, anti-loosening toothed ring 12, ring end face 121, ratchet 122, upper port 10a of internal threaded hole, lower port 10b of internal threaded hole, flange part 2, toothed flange 21, mounting groove 22. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Examples of these preferred embodiments are illustrated in the drawings. The embodiments of this utility model shown in and described with reference to the drawings are merely exemplary, and this utility model is not limited to these embodiments.

[0025] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not closely related are omitted.

[0026] Combination Figures 1 to 3 As shown, this utility model embodiment provides an anti-loosening flange nut, which includes a nut part 1 and a flange gasket surface 2.

[0027] The nut portion 1 has an internal threaded hole 10 for threading a screw. The flange gasket 2 is fixed to the lower end of the nut portion 1, and a toothed flange 21 is provided on the flange gasket 2. The flange gasket 2 has a mounting groove 22 fixed around the upper port 10a of the internal threaded hole 10. An elastic ring 11 is fixed inside the mounting groove 22, and an anti-loosening toothed ring 12 is stacked on the elastic ring 11. The anti-loosening toothed ring 12 includes a ring end face 121 and multiple ratchet teeth 122 arranged circumferentially around the inner circumference of the ring end face 121. The ratchet teeth 122 extend obliquely downward toward the center of the lower port 10b of the internal threaded hole 10. The multiple ratchet teeth 122 are spaced apart from each other and are used to wrap around the outside of the screw to tighten it.

[0028] When the aforementioned anti-loosening flange nut is inserted into the screw, the elastic ring 11 at the upper port 10a of the internal threaded hole 10 surrounds the screw. The screw can be tightly fixed by the elastic contraction ring. At the same time, under the tightening action of the elastic ring 11, the ratchet 122 of the anti-loosening toothed ring 12 is in close contact with the surface of the screw. The ratchet 122 can abut against the threaded structure on the screw, preventing the screw from loosening and reversing. When the screw is inserted, it extends in the same direction as the ratchet 122, so it will not cause installation obstruction. The screw is subjected to lateral tightening force and upper and lower pressure on the anti-loosening flange nut, which can effectively prevent the flange nut from loosening and detaching from the screw, avoid connection failure, and ensure the safety and stability of the applied equipment.

[0029] Furthermore, the toothed flange 21 provided on the flange gasket 2 can increase the friction between the anti-loosening flange nut and the end face of the screw, prevent the anti-loosening flange nut from rotating relative to the screw, and further prevent the flange nut and the screw from loosening and falling off.

[0030] In order to make the ratchet 122 fit with the thread structure of the screw so that the ratchet 122 can stably abut against the reverse rotation of the screw, the end of the ratchet 122 is arc-shaped.

[0031] In this embodiment, for example, the elastic ring 11 is a rubber ring, and the anti-loosening toothed ring 12 is a metal ring. Rubber has advantages such as good elasticity, structural stability, and low manufacturing cost, making it very suitable for use in the aforementioned elastic ring 11. The metal anti-loosening toothed ring 12 has sufficient strength to tighten the screw and can be moderately deformed for high durability.

[0032] Specifically, the toothed flange 21 includes a plurality of toothed plates surrounding the flange gasket 2. The circumferential direction of the toothed plates is opposite to the thread extension direction of the internal threaded hole 10, making it more difficult for the anti-loosening flange nut to reverse after the toothed flange 21 contacts the screw end face, thus further preventing loosening and falling off.

[0033] The nut part 1 and the flange gasket 2 are integrally formed, which facilitates the manufacturing and processing of the anti-loosening flange nut.

[0034] For example, to avoid obstructing the connection between the screw and the flange gasket 2, the height of the annular end face 121 is lower than the height of the toothed flange 21.

[0035] To make the installation of the anti-loosening toothed ring 12 more secure, the ring end face 121 extends downward to form a fixed edge that is clamped between the mounting groove 22 and the elastic ring 11, so that the anti-loosening toothed ring 12 is clamped.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A lock nut for a flange, characterized in that Includes the nut part (1) and the flange gasket (2), The nut part (1) has an internal threaded hole (10) for threading a screw. The flange gasket (2) is fixed to the lower end of the nut part (1). The flange gasket (2) has a toothed flange (21). The flange gasket (2) has a mounting groove (22) fixed around the upper port (10a) of the internal threaded hole (10). An elastic ring (11) is fixed in the mounting groove (22). An anti-loosening toothed ring (12) is stacked on the elastic ring (11). The anti-loosening toothed ring (12) includes a ring end face (121) and multiple ratchet teeth (122) arranged circumferentially around the ring end face (121). The ratchet teeth (122) extend obliquely downward toward the center of the lower port (10b) of the internal threaded hole (10). The multiple ratchet teeth (122) are arranged at intervals to be wrapped around the outside of the screw to fasten the screw.

2. A lock washer according to claim 1, wherein The end of the ratchet (122) is rounded.

3. The lock washer according to claim 1, wherein The elastic ring (11) is a rubber ring, and the anti-loosening toothed ring (12) is a metal ring.

4. The lock washer of claim 1, wherein, The toothed flange (21) includes a plurality of teeth surrounding the flange gasket (2), the circumferential direction of which is opposite to the thread extension direction of the internal threaded hole (10).

5. The lock washer of claim 1, wherein, The nut part (1) and the flange gasket surface (2) are integrally formed.

6. The lock washer of claim 1, wherein, The height of the ring end face (121) is lower than the height of the toothed flange (21).

7. The lock washer of claim 1 wherein, The ring end face (121) extends downward to form a fixed edge sandwiched between the mounting groove (22) and the elastic ring (11).

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