Lock nut

Abstract

The utility model relates to a locknut which comprises a nut body, the nut body is arranged in a hexagonal prism shape, an inner threaded hole is formed in the nut body, a plurality of locknut inserting blocks are movably installed on the nut body in the circumferential direction of the inner threaded hole, and fixing pieces are arranged corresponding to the locknut inserting blocks. The fixing pieces are inserted into the corresponding anti-loosening inserting blocks and are detachably connected with the nut body, and the nut body is provided with mounting grooves corresponding to the anti-loosening inserting blocks. By the adoption of the scheme, the anti-loose nut is provided, the fixing piece and the anti-loose insertion block are separated, then the anti-loose insertion block can be rotated, the size of the anti-loose insertion block exposed out of the mounting groove is changed, then the anti-loose nut is matched with bolts under different abrasion conditions, then connection of the fixing piece and the anti-loose insertion block is completed, and the position of the anti-loose nut is determined.

Description

TECHNICAL FIELD

[0001] The utility model relates to nut field especially, it relates to a lock nut. BACKGROUND

[0002] The nut is a fastener usually used with bolt or screw, its basic function is through the interaction of internal and external threads to fix two or more objects together, in the mechanical connection field, threaded connection is a common and important fastening mode, however, in the long-term use process, due to the influence of vibration, impact, fatigue and other factors, the connection between bolt and nut is prone to looseness, and further affect the stability and safety of equipment.

[0003] At present, the common lock mode mainly includes: passive lock structure such as spring washer, nylon insert, double nut locking, split pin positioning, or active lock such as mechanical locking, spot welding, however, these traditional lock structures generally have limited lock effect, complex installation, poor reusability and other problems, especially in the case that the bolt thread is worn due to long use time, the conventional nut cannot realize effective adaptation to the worn bolt, leading to increased connection gap and further increased looseness risk.

[0004] Therefore, how to improve the adaptability of the nut when realizing the lock has become a problem to be solved by the technical personnel in the field. SUMMARY

[0005] In view of the deficiencies in the prior art, the utility model aims at providing a lock nut which can rotate the lock insert block to change the volume of the exposed installation slot, and then complete the connection of the fixing part and the lock insert block to determine the position.

[0006] To achieve the above object, the utility model provides the following technical scheme: including nut body, the nut body is six prism setting and is provided with internal thread hole in the inside, the nut body is movably installed with a plurality of lock insert blocks along the circumference of internal thread hole and is provided with fixing part corresponding to each lock insert block, each fixing part is inserted corresponding lock insert block and is detachably connected with the nut body, the nut body is provided with installation slot corresponding to each lock insert block.

[0007] The utility model is further provided as follows: it further includes the pivot corresponding to the lock insert block, each lock insert block is eccentrically connected with the nut body through the corresponding pivot, each lock insert block includes the first section and the second section at both ends of the pivot, the diameter of the first section is greater than the diameter of the second section.

[0008] The present invention is further configured such that: each fixing component is a disc-shaped component with a diameter greater than that of the rotating shaft; the bottom of each fixing component abuts against the upper end face of the nut body; each fixing component is provided with a plurality of insertion holes along the circumference; and the nut body is provided with screw holes corresponding to each insertion hole.

[0009] The present invention is further configured such that the nut body has a plurality of contact elements protruding upward in the circumferential direction.

[0010] The present invention is further configured to include a mating body located above the nut body, wherein the mating body is provided with a slot corresponding to each fixing member, and each slot is located at the bottom of the mating body. The mating body is provided with a mating threaded hole corresponding to the internal threaded hole, and the nut body is detachably connected to the mating body through each contact member.

[0011] The present invention is further configured such that: each contact element is made of a material that is prone to deformation and includes a fixed section and a limiting section located above the fixed section. The width of the limiting section is greater than that of the corresponding fixed section. The mating body is provided with a first insertion groove for each fixed section and a second insertion groove for each limiting section. The shape and size of each first insertion groove are adapted to the corresponding fixed section, and the shape and size of each second insertion groove are adapted to the corresponding limiting section. Each limiting section is provided with a deformation groove along the radial direction and has an open bottom. One end of each limiting section is connected to the fixed section, and the other end is located in the corresponding second insertion groove and abuts against the mating body.

[0012] The present invention is further configured such that each limiting segment includes an extension portion located in the length extension direction of the fixed segment and a mating portion located at the other end of the deformation groove, wherein the top of the mating portion is fixed to the corresponding extension portion and is inclined.

[0013] By adopting the above technical solution, since each anti-loosening block is movably installed on the circumference of the nut body located in the internal threaded hole, when wear occurs on the circumference of the bolt, causing loosening between the nut body and the bolt, the anti-loosening blocks are adjusted to move radially inward along the internal threaded hole and abut against the worn part of the bolt, thereby enabling the nut body to be stably connected to the bolt and thus achieving anti-loosening. Furthermore, when the anti-loosening blocks are fully installed into the corresponding mounting slots, the connection between the fastener and the anti-loosening blocks is achieved, ensuring that the wall of the internal threaded hole is smooth. When the anti-loosening function of the nut body is not required, each anti-loosening block can be stably located in the mounting slot. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is an assembly drawing illustrating a specific embodiment of the present utility model;

[0016] Figure 2 This is an exploded view of a specific embodiment of the present utility model;

[0017] Figure 3 This is a cross-sectional view of the present invention;

[0018] Figure 4 This is an exploded view of the nut body in a specific embodiment of this utility model;

[0019] Figure 5 for Figure 3 Enlarged view of A in the middle;

[0020] Figure 6 for Figure 4 A magnified view of B in the middle.

[0021] In the diagram: 1-nut body, 11-internal threaded hole, 12-mounting groove, 13-threaded hole;

[0022] 2-Anti-loosening insert, 21-First section, 22-Second section;

[0023] 3-Fixing element, 31-Socket;

[0024] 4-Spindle;

[0025] 5-Contact element, 51-Fixing section, 52-Limiting section, 521-Extension, 522-Matching part;

[0026] 6-Matching body, 61-Slot, 62-Matching threaded hole, 63-First loading slot, 64-Second loading slot. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figures 1-6As shown, this utility model discloses an anti-loosening nut, including a nut body 1. The nut body 1 is hexagonal prism and has an internal threaded hole 11. By rotating the nut body 1, the external thread that is threaded to the nut body 1 can be threaded to the internal threaded hole 11 on the nut body 1 (this is prior art and will not be described in detail here, and the bolt is not shown in the figure). The nut body 1 is movably mounted with a plurality of anti-loosening blocks 2 along the circumference of the internal threaded hole 11, which abut against the circumference of the bolt. A fixing member 3 is provided for each anti-loosening block 2. Each fixing member 3 is inserted with a corresponding anti-loosening block 2 and is detachably connected to the nut body 1 by means of fastening or other methods. The nut body 1 is detachably connected to the anti-loosening block 2 by means of fastening or other methods. Each anti-loosening block 2 is provided with an installation groove 12. Since each anti-loosening block 2 is movably installed in the circumference of the nut body 1 located in the internal thread hole 11, when the bolt circumferential wear causes the nut body 1 to loosen with the bolt, the anti-loosening block 2 is adjusted to move radially inward along the internal thread hole 11 and abut against the worn part of the bolt, so that the nut body 1 can be stably connected with the bolt to achieve anti-loosening. When the anti-loosening block 2 is completely installed into the corresponding installation groove 12, the connection between the fastener 3 and the anti-loosening block 2 is achieved, so that the wall of the internal thread hole 11 is smooth. When the anti-loosening function of the nut body 1 is not required, each anti-loosening block 2 can be stably located in the installation groove 12.

[0029] The system also includes a rotating shaft 4 corresponding to the anti-loosening insert 2. Each anti-loosening insert 2 is eccentrically connected to the nut body 1 via the corresponding rotating shaft 4. Each anti-loosening insert 2 includes a first section 21 and a second section 22 located at both ends of the rotating shaft 4. The diameter of the first section 21 is larger than the diameter of the second section 22. Since each anti-loosening insert 2 is eccentrically connected to the nut body 1 via the corresponding rotating shaft 4, after the connection between the fixing member 3 and the anti-loosening insert 2 is loosened, rotating the rotating shaft 4 allows the anti-loosening insert 2 to be positioned in different positions on the mounting groove 12 facing the internal thread hole 11, thus achieving contact with the external thread of the bolt circumferentially. Since the diameter of the first section 21 of the anti-loosening insert 2 is larger than that of the second section 22, the anti-loosening insert 2 is an irregular solid. Therefore, by changing the rotation angle of the rotating shaft 4, the anti-loosening insert 2 can be positioned in different ways facing the internal thread hole 11. The volume exposed in the internal thread hole 11 will also be different depending on the position, thus cooperating with the different degrees of wear on the external thread of the bolt to achieve anti-loosening.

[0030] Preferably, each fixing component 3 is a disc-shaped arrangement with a diameter larger than that of the rotating shaft 4. The bottom of each fixing component 3 abuts against the upper end face of the nut body 1. Each fixing component 3 is provided with several insertion holes 31 along the circumference. The nut body 1 is provided with screw holes 13 corresponding to each insertion hole 31. Each micro bolt is inserted into the insertion hole 31 and threaded into the corresponding screw hole 13 (the bolt is not shown in the figure). After the rotating shaft 4 is rotated to expose the anti-loosening block 2 of the required volume in the corresponding mounting groove 12, the position of the fixing component 3 and the nut body 1 is determined by inserting each micro bolt into the corresponding insertion hole 31 and threading it into the corresponding screw hole 13. This prevents the rotating shaft 4 from being rotated to adjust the anti-loosening block 2 and thus prevents the nut from being installed into the bolt that mates with it, thereby achieving stable anti-loosening.

[0031] The nut body 1 is provided with a plurality of contact pieces 5 protruding upward in the circumferential direction. The arrangement of each contact piece 5 allows the nut body 1 to be rotated and unscrewed when tools such as a disassembly wrench are not available during the disassembly and assembly of the nut body 1. Therefore, the arrangement of each contact piece 5 can increase the force points of the nut assembly during disassembly and assembly.

[0032] In addition, a mating body 6 is provided above the nut body 1. The mating body 6 is provided with a slot 61 corresponding to each fixing member 3. Each slot 61 is located at the bottom of the mating body 6. The mating body 6 is provided with a mating threaded hole 62 corresponding to the internal threaded hole 11. The nut body 1 is detachably connected to the mating body 6 through each contact member 5. 1. Since the mating body 6 is provided with a mating threaded hole 62 and is detachably connected to the nut body 1, the connection between the two can increase the total height of the nut body 1, thereby meeting more assembly and usage requirements; 2. Since the nut body 1 can be detachably connected to the mating body 6 through each contact member 5, the mating body 6 can cover it when the contact members 5 do not need to be used; 3. After the connection is completed, each fixing member 3 on the nut body 1 will be inserted into the corresponding slot 61 on the mating body 6, so that unauthorized personnel cannot directly contact the fixing member 3, thereby preventing the rotation of the anti-loosening block 2.

[0033] Each contact element 5 is made of a deformable material such as rubber and includes a fixed section 51 and a limiting section 52 located above the fixed section 51. The width of the limiting section 52 is greater than that of the corresponding fixed section 51. The mating body 6 is provided with a first insertion groove 63 corresponding to each fixed section 51 and a second insertion groove 64 corresponding to each limiting section 52. The shape and size of each first insertion groove 63 are adapted to the corresponding fixed section 51, and the shape and size of each second insertion groove 64 are adapted to the corresponding limiting section 52. Each limiting section 52 is provided with a deformation groove in the radial direction and has an open bottom. One end of each limiting section 52 is connected to the fixed section 51, and the other end is located in the corresponding second insertion groove 64 and abuts against the mating body 6. During the connection process between the nut body 1 and the mating body 6, the limiting sections 52 first enter the first insertion groove 63, and the limiting sections 52... Since the width of the limiting segment 52 is greater than that of the fixed segment 51, the limiting segment 52 needs to be deformed towards the deformation groove to forcibly cross the corresponding first insertion groove 63 and enter the second insertion groove 64. When each limiting segment 52 is located in the second insertion groove 64, the limiting segment 52 located in the deformation groove will separate from it and abut against the mating body 6. At this time, without the action of external force, the limiting segment 52 can be stably located in the corresponding second insertion segment and cannot cross the corresponding first insertion groove 63 downwards, so that the contact member 5 is stably inserted into the mating body 6, that is, the mating body 6 is connected with the nut body 1. When it is necessary to separate the mating body 6 from the nut body 1, the limiting segment 52 is squeezed to move closer to the deformation groove, so that the limiting segment 52 is forcibly moved downwards to cross the corresponding first insertion groove 63, thereby separating each contact member 5 from the mating body 6.

[0034] Preferably, each limiting segment 52 includes an extension 521 located in the length extension direction of the fixed segment 51 and a mating portion 522 located at the other end of the deformation groove. The top of the mating portion 522 is fixed to the corresponding extension 521 and is inclined. Since the top of the mating portion 522 is fixed to the corresponding extension 521 and is inclined, when each limiting segment 52 passes through the corresponding first insertion groove 63 and enters the second insertion groove 64, the top of each limiting segment 52, that is, the top of the extension 521 and the mating portion 522, is aligned with each first insertion groove 63 firstly. The extension 521 is inclined from top to bottom, which can effectively reduce the width of the top of the limiting segment 52 and thus facilitate the alignment and insertion of the limiting segment 52 with each first insertion groove 63 and second insertion groove 64.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A locking nut, comprising a nut body, wherein the nut body is hexagonal prism and has an internal threaded hole, characterized in that: The nut body is movably mounted with a number of anti-loosening blocks along the circumference of the internal thread hole, and a fixing member is provided for each anti-loosening block. Each fixing member is inserted with a corresponding anti-loosening block and is detachably connected to the nut body. The nut body is provided with an installation groove for each anti-loosening block.

2. The anti-loosening nut according to claim 1, characterized in that: It also includes a rotating shaft corresponding to the anti-loosening plug. Each anti-loosening plug is eccentrically connected to the nut body through the corresponding rotating shaft. Each anti-loosening plug includes a first section and a second section located at both ends of the rotating shaft. The diameter of the first section is larger than the diameter of the second section.

3. A locking nut according to claim 1 or 2, characterized in that: Each fastener is a disc-shaped component with a diameter larger than the pivot. The bottom of each fastener abuts against the upper surface of the nut body. Each fastener has several insertion holes along its circumference, and the nut body has screw holes corresponding to each insertion hole.

4. The anti-loosening nut according to claim 1, characterized in that: The nut body has several contact parts protruding upwards in the circumferential direction.

5. The anti-loosening nut according to claim 4, characterized in that: It also includes a mating body located above the nut body. Each mating body is provided with a slot corresponding to each fixing member. Each slot is located at the bottom of the mating body. Each mating body is provided with a mating threaded hole corresponding to the internal threaded hole. The nut body is detachably connected to the mating body through each contact member.

6. The anti-loosening nut according to claim 5, characterized in that: Each contact element is made of a material that is prone to deformation and includes a fixed section and a limiting section located above the fixed section. The width of the limiting section is greater than that of the corresponding fixed section. The mating body is provided with a first insertion groove for each fixed section and a second insertion groove for each limiting section. The shape and size of each first insertion groove are adapted to the corresponding fixed section, and the shape and size of each second insertion groove are adapted to the corresponding limiting section. Each limiting section is provided with a deformation groove along the radial direction and has an open bottom. One end of each limiting section is connected to the fixed section, and the other end is located in the corresponding second insertion groove and abuts against the mating body.

7. The anti-loosening nut according to claim 6, characterized in that: Each limiting segment includes an extension in the direction of the fixed segment length extension and a mating part at the other end of the deformation groove. The top of the mating part is fixed to the corresponding extension and is inclined.

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