Locking nut

Abstract

The utility model relates to a locking nut which comprises a nut main body and further comprises a locking ring, one end of the nut main body is provided with a connecting sleeve arranged around internal threads of the nut main body, the outer wall of the connecting sleeve is in threaded connection with the inner wall of the locking ring, and one end, opposite to the nut main body, of the connecting sleeve is provided with a locking sleeve. The locking sleeve is provided with a plurality of open grooves surrounding the locking sleeve, the inner threads of the nut body extend to the inner wall position of the connecting sleeve and the inner wall position of the locking sleeve, and a pressing ring surrounding the locking sleeve is arranged at the end, back on to the nut body, of the inner wall of the locking ring. The inner diameter of the pressing ring is smaller than the outer diameter of the locking sleeve. The utility model provides a locking nut with a locking function.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of spare parts, and more particularly to a locking nut. BACKGROUND

[0002] The nut is a cap, which is screwed together with a bolt or a stud to serve as a fastening part, and is a component that must be used in all mechanical production and manufacturing.

[0003] The nut may become loose after installation if it is impacted or vibrated or used for a long time, which affects the stability of the equipment. CONTENT OF THE UTILITY MODEL

[0004] In view of the above, in order to overcome the shortcomings of the prior art, the utility model provides a locking nut with locking function.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a locking nut, comprising a nut main body, further comprising a locking ring, one end of the nut main body is provided with a connecting sleeve arranged around the internal thread thereof, the outer wall of the connecting sleeve is threadedly connected with the inner wall of the locking ring, one end of the connecting sleeve away from the nut main body is provided with a locking sleeve, the locking sleeve is provided with a plurality of opening grooves arranged around the locking sleeve, the internal thread of the nut main body extends to the inner wall position of the connecting sleeve and the locking sleeve, one end of the inner wall of the locking ring away from the nut main body is provided with a compression ring arranged around the locking sleeve, and the inner diameter of the compression ring is smaller than the outer diameter of the locking sleeve.

[0006] In this way, the nut main body is screwed on the stud during use, and after being screwed to the limit position, the locking ring is driven to rotate, so that the locking ring moves on the outer wall of the connecting sleeve towards the nut main body, and the compression ring on the locking ring also moves towards the locking sleeve, and after the positions of the two overlap, the locking sleeve is tightly pressed towards the internal stud due to the smaller inner diameter of the compression ring, and the locking sleeve is provided with a plurality of opening grooves, so that it can be freely bent and deformed towards the center, so that it can clamp the intermediate stud from all directions, achieving the effect of locking the nut main body, not only relying on the friction generated by the deformation force of the material itself to achieve the locking effect, but also using an additional locking ring for locking, which is more stable, and even if the locking ring becomes loose, as long as the compression ring does not completely separate from the locking sleeve, the locking state of the nut main body will not be released, the structure is stable, the size difference between the compression ring and the locking sleeve can be adjusted according to actual needs to achieve clamping while not damaging the stud, and when disassembling, the locking state can be released by first unscrewing the locking ring, and then the nut main body can be directly unscrewed.

[0007] Further, the outer wall of the locking ring is hexagonal.

[0008] In this way, the locking ring can be rotated by using a hexagonal wrench, and the operation is more convenient.

[0009] Further, the size of the outer wall of the locking ring is the same as that of the outer wall of the nut body.

[0010] In this way, the same hexagonal wrench can be used to drive the nut body and the locking ring at the same time, and the operation is more convenient.

[0011] Further, the inner wall of the locking ring is provided with an inverted bevel towards one end of the nut body.

[0012] In this way, the inverted bevel facilitates insertion during installation, and the position of the inverted bevel can not be provided with threads, so that the external threads of the outer wall of the connecting sleeve can not be processed to the bottom, facilitating processing.

[0013] Further, the inner wall of the locking ring is provided with an inverted bevel towards one end of the nut body.

[0014] In this way, the inverted bevel of the compression ring contacts the locking sleeve before overlapping with the locking sleeve, so that it can be slid along the inclined surface, and the locking process is more smooth.

[0015] Further, the length of the internal threads of the locking ring is greater than the length of the external threads of the connecting sleeve.

[0016] In this way, the compression ring will not press the external threads of the connecting sleeve, and will not damage it.

[0017] Further, the inner wall of the locking ring is provided with a connecting groove adapted to the compression ring on the side away from the nut body, and the inner diameter of the connecting groove is greater than the outer diameter of the internal threads of the locking ring.

[0018] In this way, the compression ring and the locking ring can be processed separately, the internal threads of the locking ring can be directly processed without being disturbed by the compression ring, and after the thread processing is completed, the compression ring is inserted into the connecting groove for connection, and the processing is more convenient.

[0019] Further, the locking ring and the compression ring are welded.

[0020] In this way, the compression ring can be welded on the outside, without affecting the operation of the intermediate structure, and the welded structure is more stable.

[0021] Further, the outer diameter of the locking sleeve is smaller than the inner diameter of the external threads of the connecting sleeve.

[0022] In this way, the external threads of the outer wall of the connecting sleeve will not touch the outer wall of the locking sleeve when processing, and the processing is more smooth. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structural schematic view of the embodiment of the utility model.

[0024] Figure 2 It is an explosion drawing of the embodiment of the utility model.

[0025] Figure 3 It is a sectional view of the embodiment of the utility model.

[0026] The meaning of the reference numeral in the drawing: 1. nut main body, 101. connecting sleeve, 102. locking sleeve, 1021. open slot, 2. locking ring, 201. compression ring, 202. connecting slot. DETAILED DESCRIPTION

[0027] The specific embodiment is only the explanation of the embodiment, and is not the limitation of the embodiment, and the person skilled in the art can make the modification of no creative contribution according to the need after reading the specification, but as long as in the claim range of the embodiment, it is protected by the patent law.

[0028] Referring to the drawings, the utility model provides the following technical scheme: a locking nut, including nut main body 1, still include locking ring 2, the one end of nut main body 1 is equipped with the connecting sleeve 101 around its internal thread arrangement, the outer wall of connecting sleeve 101 with the inner wall between locking ring 2 is screwed, the one end of connecting sleeve 101 is equipped with locking sleeve 102 back to nut main body 1, locking sleeve 102 is equipped with a plurality of open slot 1021 around locking sleeve 102 arrangement, the internal thread of nut main body 1 extends to the inner wall position of connecting sleeve 101 and locking sleeve 102, the one end of the inner wall of locking ring 2 is equipped with the compression ring 201 around locking sleeve 102 arrangement back to nut main body 1, the inner diameter of compression ring 201 is less than the outer diameter of locking sleeve 102 setting.

[0029] Thus, in use, the nut body 1 is screwed on the stud, and after being screwed to the limit position, the locking ring 2 is driven to rotate, so that the locking ring 2 moves on the outer wall of the connecting sleeve 101 towards the nut body 1, and at the same time, the pressing ring 201 on the locking ring 2 also moves towards the locking sleeve 102, and after the positions of the two overlap, the locking sleeve 102 is pressed towards the inner stud due to the smaller inner diameter of the pressing ring 201, and after the locking sleeve 102 is provided with a plurality of open grooves 1021, it can be freely bent and deformed towards the center, so that the stud in the middle is clamped from all directions, achieving the effect of locking the nut body 1, not only relying on the friction generated by the deformation force of the material itself to achieve the locking effect, but also using the additional locking ring 2 to lock, which is more stable, and even if the locking ring 2 loosens, as long as the pressing ring 201 does not completely separate from the locking sleeve 102, the locking state of the nut body 1 will not be released, and the structure is stable, and the size difference between the pressing ring 201 and the locking sleeve 102 can be adjusted according to actual needs to achieve clamping while not damaging the stud, and when disassembling, the locking ring 2 is only needed to be screwed out to release the locking state, and then the nut body 1 can be directly screwed out.

[0030] Preferably in the embodiment, the outer wall of the locking ring 2 is hexagonal.

[0031] Thus, a hexagonal wrench can be used to rotate the locking ring 2, which is more convenient to operate.

[0032] Preferably in the embodiment, the size of the outer wall of the locking ring 2 is the same as that of the outer wall of the nut body 1.

[0033] Thus, the same hexagonal wrench can be used to drive the nut body 1 and the locking ring 2 at the same time, which is more convenient to operate.

[0034] Preferably in the embodiment, the inner wall of the locking ring 2 is provided with an inverted bevel towards one end of the nut body 1.

[0035] Thus, the inverted bevel facilitates insertion during installation, and the position of the inverted bevel can not be provided with threads, so that the outer threads of the connecting sleeve 101 can not be processed to the bottom, which is convenient for processing.

[0036] Preferably in the embodiment, the inner wall of the pressing ring 201 is provided with an inverted bevel towards one end of the nut body 1.

[0037] Thus, the pressing ring 201 contacts the locking sleeve 102 by the bevel before overlapping with the locking sleeve 102, so that it can slide along the bevel, and the locking process is smoother.

[0038] Preferably in the embodiment, the length of the inner threads of the locking ring 2 is greater than the length of the outer threads of the connecting sleeve 101.

[0039] In this way, the compression ring 201 does not press the outer thread of the connecting sleeve 101, and the connecting sleeve 101 is not damaged.

[0040] Preferably, the inner wall of the locking ring 2 is provided with a connecting groove 202 adapted to the compression ring 201, and the inner diameter of the connecting groove 202 is greater than the outer diameter of the internal thread of the locking ring 2.

[0041] In this way, the compression ring 201 and the locking ring 2 can be machined separately, the internal thread of the locking ring 2 can be machined directly, and the compression ring 201 does not interfere with the machining of the internal thread.

[0042] Preferably, the locking ring 2 and the compression ring 201 are welded.

[0043] In this way, the compression ring 201 can be welded on the outside, and the structure in the middle is not affected, and the welding structure is more stable.

[0044] Preferably, the outer diameter of the locking sleeve 102 is smaller than the inner diameter of the outer thread of the connecting sleeve 101.

[0045] In this way, the outer thread of the outer wall of the connecting sleeve 101 is not touched when machining, and the machining is more smooth.

[0046] Although the utility model has been described in detail with reference to the foregoing embodiments, the protection scope of the utility model is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, and all of them should be covered in the protection scope of the utility model.

Claims

1. A lock nut comprising a nut body, characterised in that: The locking ring is further provided, one end of the nut body is provided with a connecting sleeve around the internal thread, the outer wall of the connecting sleeve is threadedly connected with the inner wall of the locking ring, the connecting sleeve is provided with a locking sleeve at the end away from the nut body, the locking sleeve is provided with a plurality of opening slots around the locking sleeve, the internal thread of the nut body extends to the inner wall of the connecting sleeve and the locking sleeve, the inner wall of the locking ring is provided with a compression ring around the locking sleeve at the end away from the nut body, and the inner diameter of the compression ring is smaller than the outer diameter of the locking sleeve.

2. A lock nut according to claim 1, wherein: The outer wall of the locking ring is hexagonal.

3. A lock nut according to claim 1, wherein: The outer wall of the locking ring is the same as the outer wall of the nut body.

4. The lock nut of claim 1, wherein: The inner wall of the locking ring is provided with an inverted bevel at the end facing the nut body.

5. The locking nut of claim 1, wherein: The inner wall of the compression ring is provided with an inverted bevel at the end facing the nut body.

6. A lock nut according to claim 1 wherein: The internal thread length of the locking ring is greater than the external thread length of the connecting sleeve.

7. The lock nut of claim 1, wherein: The inner wall of the locking ring is provided with a connecting groove at the side away from the nut body, the connecting groove is matched with the compression ring, and the inner diameter of the connecting groove is greater than the outer diameter of the internal thread of the locking ring.

8. A lock nut according to claim 7, wherein: The locking ring and the compression ring are welded.

9. The lock nut of claim 1, wherein: The outer diameter of the locking sleeve is smaller than the internal thread diameter of the connecting sleeve.

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