Self-locking quick-release quick-assembly nut and locking method

Abstract

The invention relates to a self-locking quick-release quick-assembly nut and a locking method, the self-locking quick-release quick-assembly nut comprises an inner sleeve part, a locking part and a locking part, the inner sleeve part is a complete threaded sleeve formed by combining two or more parts, the inner side of each part is provided with a first inner thread matched with a thread of a target screw, and the outer side of each part is provided with a conical outer thread; the outer sleeve part is arranged on the outer side of the inner sleeve part, an opening groove is formed in the outer sleeve part, the size of the opening groove is larger than the diameter of the target screw rod, a second inner thread is arranged in the opening groove, and the second inner thread is matched with a conical outer thread on the outer side of the inner sleeve part; the target screw rod is locked by the inner sleeve piece by rotating the outer sleeve piece; and the fixing piece is inserted on the outer sleeve piece in a penetrating manner and is used for locking and fixing the outer sleeve piece and the inner sleeve piece. Through the structural design of the inner sleeve part and the outer sleeve part, the nut can be directly sleeved and locked from any position of the screw without being screwed in from the end part of the screw, so that the mounting efficiency is remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of connecting pieces, and in particular to a self-locking quick-release quick-install nut and a locking method. Background Art

[0002] In traditional mechanical connections, nuts are one of the most commonly used fasteners and are widely used in various scenarios that require fixing and connection. However, existing nuts have the following problems in actual use: Long screws are inefficient to install; when installing existing nuts, they usually need to be screwed in from the end of the screw. For long screws, the screwing process takes a long time, which seriously affects the installation efficiency. For example, for an M16×2 screw that is screwed into a 200mm installation scenario, the thread pitch is 2mm, and it needs to be rotated 100 times. If each manual rotation is calculated at 1 second per turn, it takes 100 seconds. This long screw installation method is inefficient in large-scale production or maintenance scenarios, increasing labor intensity and time costs.

[0003] Installation is difficult when there are obstructions at both ends of the screw: In some application scenarios, the two ends of the screw may be blocked by other components, making it impossible to screw the nut directly from the end. In this case, other components need to be removed before the nut can be installed, which increases the workload and complexity. For example, in automobile engine maintenance, some screw positions are blocked by engine components, and traditional nuts cannot be installed directly. Additional disassembly and assembly steps are required, which seriously affects maintenance efficiency.

[0004] Insufficient anti-loosening performance: Existing nuts are prone to loosening in vibrating or dynamic environments, especially in application scenarios requiring high precision or high reliability, such as aerospace, mechanical transmission, etc. Although there are some designs for anti-loosening nuts, they are usually complex in structure, high in cost, and still have a certain risk of loosening in actual use.

[0005] Limitations of existing quick-release nuts: Although there are many quick-release nuts in the prior art, most of them still need to be screwed in from the end of the screw before they can be installed. Some nuts similar to the sub-wrapped installation are mainly completed by radial fixation, but these designs are quite different from the present invention and cannot meet the dual requirements of fast installation and high reliability.

[0006] Although the nut design in the existing technology meets the basic fastening requirements to a certain extent, it still has obvious deficiencies in terms of quick installation, anti-loosening performance and adaptability to complex installation environments. These problems limit the application of nuts in industrial scenarios with high efficiency and high reliability requirements, especially in scenarios where long screws are installed and there are obstructions at both ends of the screw. The installation efficiency and convenience of existing nuts need to be improved urgently. Summary of the invention

[0007] To this end, the technical problem to be solved by the present invention is to overcome the problem in the prior art that the nut needs to be screwed in from the end of the screw before it can be installed, and to provide a self-locking quick-release quick-install nut and a locking method. Through the structural design of the inner and outer sets, the nut can be directly inserted and locked from any position of the screw without having to be screwed in from the end of the screw, thereby significantly improving the installation efficiency.

[0008] In order to solve the above technical problems, the present invention provides a self-locking quick-release quick-install nut, which is characterized by comprising: The inner sleeve is composed of two or more parts to form a complete thread sleeve, each of which is provided with a first internal thread matching the thread of the target screw rod on the inner side and a tapered external thread on the outer side; An outer sleeve is arranged on the outer side of the inner sleeve, the outer sleeve is provided with an open groove, the size of the open groove is larger than the diameter of the target screw, a second internal thread is provided in the open groove, the second internal thread cooperates with the tapered external thread on the outer side of the inner sleeve, and the inner sleeve is locked to the target screw by rotating the outer sleeve; A fixing piece is inserted into the outer sleeve and is used to lock and fix the outer sleeve and the inner sleeve.

[0009] In one embodiment of the present invention, the inner kit is composed of a part A and a part B, and both ends of the parts A and B are provided with reference planes for ensuring the relative position accuracy of the parts A and B during the assembly process.

[0010] In one embodiment of the present invention, an elastic locking member is provided on the fixing member. When the fixing member is tightened on the outer sleeve, the elastic locking member is engaged in the thread of the target screw to provide rotation resistance and prevent the outer sleeve from loosening.

[0011] In one embodiment of the present invention, the elastic locking member is made of non-metallic material, and the elastic locking member is fixed to the fixing member by bonding or embedding.

[0012] In one embodiment of the present invention, the shape and size of the elastic locking member match the threads of the target screw.

[0013] In one embodiment of the present invention, a card slot and a mounting hole are relatively arranged at the opening of the outer sleeve, and the fixing member is inserted into the card slot and the mounting hole to achieve locking and fixing; wherein the size of the card slot is larger than the elastic locking member, so as to avoid the elastic locking member.

[0014] In one embodiment of the present invention, the side surface of the outer sleeve is provided with a plurality of clamping planes for matching with a wrench or other tools.

[0015] In one embodiment of the present invention, the fixing member is a fixing screw, and the head of the fixing screw is provided with a plurality of clamping planes for matching with a wrench or other tools.

[0016] In order to solve the above technical problems, the present invention provides a locking method for a self-locking quick-release quick-install nut, which is characterized by comprising the following steps: Step 1: Engage the inner sleeve with the target screw rod, and rotate the inner sleeve so that the first internal thread thereof is engaged with the thread of the target screw rod; Step 2: insert the outer sleeve from above the target screw rod, and directly insert the outer sleeve into any position of the target screw rod through the opening groove of the outer sleeve rod, without screwing it in from the end of the target screw rod; Step 3: Rotate the outer sleeve so that the second internal thread of the outer sleeve matches the tapered external thread of the inner sleeve, and tighten the outer sleeve until sufficient tightening torque is generated between the inner sleeve and the target screw to achieve a locking function; Step 4: Tighten the fixing screw and make the elastic locking piece on the fixing screw fit into the thread of the target screw thread.

[0017] The above technical solution of the present invention has the following beneficial effects compared with the prior art: The present invention discloses a self-locking quick-release and quick-install nut and locking method, in which the tapered external thread of the inner sleeve cooperates with the internal thread of the outer sleeve, and the nut is quickly installed and locked by radial locking. The nut can be directly inserted and locked from any position of the screw rod, without the need to be screwed in from the end of the screw rod, thereby significantly improving the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the exploded structure of the self-locking quick-release quick-install nut and the target screw rod in the preferred embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure in which the self-locking quick-release quick-install nut and the target screw are installed on a workpiece; Figure 3 It is a schematic diagram of the structure of the inner set in the present invention; Figure 4 It is a schematic diagram of the structure of the foreign kit of the present invention; Figure 5 It is a schematic diagram of the structure of the fixing member in the present invention; Explanation of the reference numerals in the specification: 1. inner set; 11. first internal thread; 12. tapered external thread; 13. reference plane; 2. outer set; 21. open groove; 211. second internal thread; 22. slot; 23. mounting hole; 3. fixing piece; 4. elastic locking piece; 100. target screw. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention. Embodiment 1

[0021] Reference Figure 1-5 As shown, the present invention provides a self-locking quick-release quick-install nut, comprising: The inner sleeve 1 is formed by combining two or more parts to form a complete thread sleeve, each of which is provided with a first internal thread 11 on the inner side that matches the thread of the target screw 100, and a tapered external thread 12 on the outer side; The outer sleeve 2 is arranged on the outer side of the inner sleeve 1, and the outer sleeve 2 is provided with an open groove 21, the size of the open groove 21 is larger than the diameter of the target screw 100, and a second internal thread 211 is provided in the open groove 21, and the second internal thread 211 cooperates with the tapered external thread 12 on the outer side of the inner sleeve 1, and the inner sleeve 1 is locked to the target screw 100 by rotating the outer sleeve 2; The fixing member 3 is inserted into the outer sleeve 2 and is used to lock and fix the outer sleeve 3 and the inner sleeve 1.

[0022] In the above scheme, through the design of the open groove 21 of the outer sleeve 2, the nut can be directly inserted from any position of the target screw 100 without having to be screwed in from the end of the target screw 100, which significantly improves the installation efficiency and is especially suitable for scenarios with long screws or obstructions at both ends of the screws.

[0023] Preferably, the inner kit 1 in this embodiment is composed of a part A and a part B, and both ends of the parts A and B are provided with reference planes 13, which are used to ensure the relative position accuracy of the parts A and B during the assembly process. The reference planes 13 at both ends are designed to ensure the relative position accuracy of the parts during the assembly process, thereby ensuring the thread matching accuracy of the inner kit 1 and the target screw 100, reducing assembly errors, making the inner kit 1 more stable after assembly, avoiding poor thread contact or uneven force caused by part misalignment, and extending the service life of the nut.

[0024] Furthermore, an elastic locking piece 4 is provided on the fixing piece 3. When the fixing piece is tightened on the outer sleeve 2, the elastic locking piece 4 is inserted into the thread of the target screw 100 to provide rotational resistance and prevent the outer sleeve 2 from loosening. The loosening of the outer sleeve 2 in a vibrating or dynamic environment is effectively prevented, and the anti-loosening performance of the nut is significantly improved.

[0025] The elastic locking member 4 is made of non-metallic material, and is fixed to the fixing member 3 by bonding or embedding. The elastic locking member is made of non-metallic material, has good elasticity, wear resistance and corrosion resistance, and can maintain stable locking performance under different working conditions. The elastic locking member 4 made of non-metallic material can be fixed to the fixing member by bonding or embedding, with simple processing technology and low cost, while ensuring the reliability and durability of the elastic locking member 4.

[0026] In the actual processing, the shape and size of the elastic locking member 4 need to match the thread of the target screw 100. The elastic locking member 4 can be inserted into the thread of the target screw 100, providing additional rotation resistance, effectively preventing the nut from loosening in a vibrating environment, and significantly improving the anti-loosening performance.

[0027] In this embodiment, the opening of the outer sleeve 2 is provided with a slot 22 and a mounting hole 23, and the fixing member 3 is inserted into the slot 22 and the mounting hole 23 to achieve locking and fixing; wherein, the size of the slot 22 is larger than the elastic locking member 4, and is used to avoid the elastic locking member 4. The slot 22 and the mounting hole 23 are provided at the opening of the outer sleeve 2, and the fixing member 3 is inserted into them to achieve locking and fixing. This structural design further enhances the connection strength between the inner sleeve 1 and the outer sleeve 2, and ensures the stability of the nut during use. Since the size of the slot 22 is larger than the elastic locking member 4, it can effectively avoid the elastic locking member 4, avoid interference during assembly, and improve assembly efficiency and reliability.

[0028] Furthermore, the side of the outer sleeve 2 is provided with a plurality of clamping planes for adapting to a wrench or other tools. The design of the clamping planes facilitates the user to quickly operate during installation and removal, improves work efficiency, and the design of the clamping planes makes the outer sleeve 2 more evenly stressed during rotation, avoids damage to the nut due to tool slippage, and prolongs the service life of the nut.

[0029] In this embodiment, the fixing member 3 is a fixing screw, and the head of the fixing screw is provided with a plurality of clamping planes for adapting to a wrench or other tools. The design of the fixing screw makes the overall structure of the nut more compact, reduces the number of parts, reduces the production cost, and improves the reliability of the product. Embodiment 2

[0030] In order to solve the above technical problems, the present invention provides a locking method for a self-locking quick-release quick-install nut, which specifically comprises the following steps: Step 1: The inner sleeve 1 is engaged with the target screw 100, and the inner sleeve 1 is rotated so that the first internal thread 11 thereof is engaged with the thread of the target screw 100; Step 2: insert the outer sleeve 2 from above the target screw 100, and directly insert the outer sleeve 2 into any position of the target screw 100 through the opening groove 21 of the outer sleeve 2, without screwing it in from the end of the target screw 100; Step 3: Rotate the outer sleeve 2 so that the second internal thread 211 of the outer sleeve 2 matches with the tapered external thread 12 of the inner sleeve 1, and tighten the outer sleeve 2 until sufficient tightening torque is generated between the inner sleeve 1 and the target screw 100 to achieve a locking function; Step 4: Tighten the fixing screw and make the elastic locking piece 4 on the fixing screw snap into the thread of the target screw 100 .

[0031] The above installation method is simple and easy to understand, does not require complicated tools or operating skills, is suitable for large-scale production and maintenance scenarios, and reduces labor intensity and time costs; through the cooperation of the inner kit 1 and the outer kit 2, and the assistance of the elastic locking part 4, it is ensured that the nut has good self-locking performance and anti-loosening effect after installation, meeting high reliability requirements.

[0032] Obviously, the above embodiments are merely examples for clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the protection scope of the invention.

Claims

1. A self-locking quick-release nut, characterized in that: include: · The inner sleeve is composed of two or more parts to form a complete thread sleeve, each of which is provided with a first internal thread matching the thread of the target screw rod on the inner side and a tapered external thread on the outer side; An outer sleeve is arranged on the outer side of the inner sleeve, the outer sleeve is provided with an open groove, the size of the open groove is larger than the diameter of the target screw, a second internal thread is provided in the open groove, the second internal thread cooperates with the tapered external thread on the outer side of the inner sleeve, and the inner sleeve is locked to the target screw by rotating the outer sleeve; A fixing piece is inserted into the outer sleeve and is used to lock and fix the outer sleeve and the inner sleeve.

2. A self-locking quick-release nut according to claim 1, characterized in that: The inner kit is composed of a part A and a part B. Both ends of the parts A and B are provided with reference planes for ensuring the relative position accuracy of the parts A and B during the assembly process.

3. The self-locking quick-release nut according to claim 1, characterized in that: The fixing member is provided with an elastic locking member. When the fixing member is tightened on the outer sleeve, the elastic locking member is clamped into the thread of the target screw rod to provide rotation resistance and prevent the outer sleeve from loosening.

4. The self-locking quick-release nut according to claim 3, characterized in that: The elastic locking piece is made of non-metallic material and is fixed on the fixing piece by bonding or embedding.

5. The self-locking quick-release nut according to claim 4, characterized in that: The shape and size of the elastic locking member are matched with the threads of the target screw rod.

6. The self-locking quick-release nut according to claim 5, characterized in that: A card slot and a mounting hole are arranged opposite to each other at the opening of the outer sleeve, and the fixing member is inserted into the card slot and the mounting hole to achieve locking and fixing; wherein the size of the card slot is larger than the elastic locking member, so as to avoid the elastic locking member.

7. The self-locking quick-release nut according to claim 6, characterized in that: The side surface of the outer sleeve is provided with a plurality of clamping planes for matching with a wrench or other tools.

8. The self-locking quick-release nut according to claim 1, characterized in that: The fixing piece is a fixing screw, and the head of the fixing screw is provided with a plurality of clamping planes for matching with a wrench or other tools.

9. A method for locking a self-locking quick-release nut, characterized in that: The self-locking quick-release nut according to any one of claims 1 to 8 is used to implement the locking method, and the locking method specifically comprises the following steps: Step 1: Engage the inner sleeve with the target screw rod, and rotate the inner sleeve so that the first internal thread thereof is engaged with the thread of the target screw rod; Step 2: insert the outer sleeve from above the target screw rod, and directly insert the outer sleeve into any position of the target screw rod through the opening groove of the outer sleeve rod, without screwing it in from the end of the target screw rod; Step 3: Rotate the outer sleeve so that the second internal thread of the outer sleeve matches the tapered external thread of the inner sleeve, and tighten the outer sleeve until sufficient tightening torque is generated between the inner sleeve and the target screw to achieve a locking function; Step 4: Tighten the fixing screw and make the elastic locking piece on the fixing screw fit into the thread of the target screw thread.

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