Anti-loosening structure of screwed joint

Abstract

The utility model discloses an anti-loose structure of a screwed joint, which relates to the technical field of screwed joints and comprises a first joint, a second joint, a screwed joint and an anti-loose joint, one end of the screwed joint is arranged in the first joint, the other end of the screwed joint is in threaded connection with the second joint, and the anti-loose joint is arranged in the second joint. And the other end of the screwed joint is clamped with the anti-loose joint. The anti-loosening connector is arranged in the second connector, the other end of the threaded connector is connected with the anti-loosening connector in a clamped mode, when the threaded connector is assembled, a buckle can be naturally matched with a clamping groove in the outer wall of the threaded connector due to one-way inclination, and the anti-loosening connector and the threaded connector are tightly attached and locked under the action of a spring. When the threaded connector needs to be pulled out, the pressing plate is manually pressed to enable the buckle to be separated firstly, then the threaded connector is rotated out, the design can effectively prevent the threaded connector from being rotated out and separated in the using process, and the connecting stability and safety of the threaded connector are improved.

Description

Technical Field

[0001] This utility model relates to the field of threaded joint technology, and in particular to a threaded joint anti-loosening structure. Background Technology

[0002] Threaded joints are commonly used connecting components in mechanical equipment, widely applied in various pipeline connections and mechanical assembly. In practical applications, the reliability and stability of threaded joints are crucial for the safe operation of equipment. However, traditional threaded joints are prone to loosening during long-term use due to factors such as vibration, temperature changes, and pressure fluctuations, leading to insecure connections or even detachment, which can cause equipment failure or safety accidents.

[0003] The prior art (CN203248861U) discloses a pipe anti-loosening threaded joint, which includes a flat shoulder joint connected to one end of the pipe, an anti-loosening nut threaded onto the flat shoulder joint, an intermediate threaded joint connected to the other end of the pipe, an outer nut fitted on the outside of the intermediate threaded joint and the flat shoulder joint, and a sealing gasket installed at the pipe end between the intermediate threaded joint and the flat shoulder joint.

[0004] However, in the existing technology, the anti-loosening nut is simply set up. When disassembling or installing the threaded joint, a tool is needed to loosen or tighten the anti-loosening nut and then rotate the outer nut. This is inconvenient and affects work efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a threaded joint anti-loosening structure to solve the above-mentioned technical problems.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A threaded joint anti-loosening structure includes a first joint, a second joint, a threaded joint, and an anti-loosening joint. One end of the threaded joint is disposed in the first joint, and the other end of the threaded joint is threadedly connected to the second joint. The anti-loosening joint is disposed in the second joint, and the other end of the threaded joint is engaged with the anti-loosening joint.

[0008] Preferably, a knob is provided in the middle of the threaded joint.

[0009] As a further preferred embodiment, the outer wall of the threaded connector is provided with external threads and several grooves from the middle to the other end.

[0010] As a further preferred embodiment, several of the slots are arranged in a ring on the outer wall of the threaded joint.

[0011] As a further preferred embodiment, the anti-loosening connector includes a clamping plate and a pressure plate, wherein the pressure plate is disposed at the upper end of the clamping plate, and the clamping plate is disposed within the second connector.

[0012] As a further preferred embodiment, the card plate has a circular hole in the middle, and the bottom wall of the circular hole is provided with a buckle that cooperates with the card slot, and a plurality of the buckles are inclined in the same direction.

[0013] As a further preferred embodiment, the lower end of the card plate has limit grooves on both sides, and the inner wall of the second connector is provided with a limiting part that cooperates with the limit grooves.

[0014] As a further preferred embodiment, the second connector has a first mounting hole inside and a second mounting hole at its upper end. The first mounting hole communicates with the second mounting hole. The first mounting hole is arranged radially along the second connector, and the second mounting hole is arranged axially along the second connector. The clamping plate is disposed in the first mounting hole, and the pressure plate is disposed in the second mounting hole.

[0015] As a further preferred embodiment, the anti-loosening joint is generally arranged in a "┏" shape;

[0016] A spring is provided at the lower end of the pressure plate. One end of the spring is connected to the pressure plate, and the other end of the spring is connected to the bottom wall of the second mounting hole.

[0017] The above technical solution has the following advantages or beneficial effects:

[0018] In this invention, an anti-loosening connector is provided inside the second connector, and the other end of the threaded connector is engaged with the anti-loosening connector. When the threaded connector is assembled, the buckle, due to its one-way inclination, will naturally cooperate with the groove on the outer wall of the threaded connector, and under the action of the spring, the anti-loosening connector and the threaded connector will be tightly fitted and locked. When it is necessary to pull out the threaded connector, the pressure plate is pressed manually to make the buckle disengage first, and then the threaded connector is rotated out. This design can effectively prevent the threaded connector from being rotated out during use, improve the connection stability and safety of the threaded connector, and facilitate disassembly and assembly, thereby improving work efficiency. Attached Figure Description

[0019] Figure 1 This is an exploded schematic diagram of the anti-loosening structure of the threaded joint in this utility model;

[0020] Figure 2 This is a partial internal schematic diagram of the anti-loosening structure of the threaded joint in this utility model;

[0021] Figure 3 This is a schematic diagram of the buckle and the slot engaging in this utility model;

[0022] Figure 4 This is a schematic diagram of the buckle and the slot in this utility model.

[0023] In the diagram: 1. First connector; 2. Second connector; 3. Threaded connector; 4. Anti-loosening connector; 5. Knob; 6. External thread; 7. Slot; 8. Clamping plate; 9. Pressure plate; 10. Round hole; 11. Buckle; 12. Limiting groove; 13. Limiting part; 14. First mounting hole; 15. Second mounting hole; 16. Spring. Detailed Implementation

[0024] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Figure 1 This is an exploded schematic diagram of the anti-loosening structure of the threaded joint in this utility model; Figure 2 This is a partial internal schematic diagram of the anti-loosening structure of the threaded joint in this utility model; Figure 3 This is a schematic diagram of the buckle and the slot engaging in this utility model; Figure 4 This is a schematic diagram showing the buckle disengaging from the slot in this utility model. Please refer to [link / reference]. Figures 1 to 4The diagram illustrates a preferred embodiment of a threaded joint anti-loosening structure, comprising a first joint 1, a second joint 2, a threaded joint 3, and an anti-loosening joint 4. One end of the threaded joint 3 is disposed within the first joint 1, and the other end of the threaded joint 3 is threadedly connected to the second joint 2. The anti-loosening joint 4 is disposed within the second joint 2, and the other end of the threaded joint 3 engages with the anti-loosening joint 4. The threaded joint 3 and the first joint 1 can be connected by either a snap-fit ​​or a threaded connection. A sealing ring is provided between the threaded joint 3 and the first joint 1 to prevent media leakage. A sealing ring can also be provided between the threaded joint 3 and the second joint 2, for example, by embedding a sealing ring on the outer edge of the other end of the threaded joint 3. After the threaded joint 3 is installed in place, the sealing ring can contact the inner wall of the second joint 2 to achieve a seal between them. The anti-loosening joint 4, after the threaded joint 3 is installed in place, can cooperate with the groove 7 on the outer wall of the threaded joint 3 to restrict the rotation of the threaded joint 3 and prevent it from being rotated out during use.

[0028] Furthermore, as a preferred embodiment, a knob 5 is provided in the middle of the threaded connector 3. The knob 5 is cylindrical, and its outer diameter is larger than that of the threaded connector 3, making it convenient for the user to manually rotate the threaded connector 3. The surface of the knob 5 can be designed with anti-slip texture to increase friction and make rotation operation more convenient.

[0029] Furthermore, as a preferred embodiment, the outer wall of the threaded connector 3 is provided with external threads 6 and several grooves 7 sequentially from the middle to the other end. The external threads 6 mate with the internal threads on the inner wall of the second connector 2 to achieve a threaded connection.

[0030] Furthermore, as a preferred embodiment, a number of slots 7 are arranged in a ring on the outer wall of the threaded joint 3, wherein the ring slots 7 are arranged at equal intervals along the axial direction of the threaded joint 3, and each slot 7 has the same depth, to ensure that it can be reliably engaged with the buckle 11 of the anti-loosening joint 4.

[0031] Furthermore, as a preferred embodiment, the anti-loosening connector 4 includes a clamping plate 8 and a pressure plate 9. The upper end of the clamping plate 8 is provided with the pressure plate 9, and the clamping plate 8 is disposed within the second connector 2. In this embodiment, the clamping plate 8 is flat and made of an elastic material, possessing a certain elastic deformation capability. A circular hole 10 is provided in the middle of the clamping plate 8, and a buckle 11 that mates with the clamping groove 7 is provided on the bottom wall of the circular hole 10. The buckle 11 protrudes from the inner wall of the circular hole 10, and its shape matches the clamping groove 7, allowing it to be embedded in the clamping groove 7 to form a snap-fit ​​structure. In addition, the buckle 11 is inclined in the same direction, having a unidirectional slope, and the clamping groove 7 is also inclined in the same direction, which facilitates the buckle 11 entering the clamping groove 7.

[0032] Furthermore, as a preferred embodiment, limiting grooves 12 are formed on both sides of the lower end of the card plate 8, and limiting parts 13 that cooperate with the limiting grooves 12 are provided on the inner wall of the second connector 2. The limiting parts 13 can be protrusions or bumps, which can restrict the movement of the card plate 8 after being inserted into the limiting grooves 12, so that the card plate 8 is kept in the correct position. It is mainly used to restrict the radial movement of the card plate 8 along the second connector 2.

[0033] Furthermore, in a preferred embodiment, the second connector 2 has a first mounting hole 14 inside and a second mounting hole 15 at its upper end. The first mounting hole 14 and the second mounting hole 15 communicate with each other. The first mounting hole 14 is arranged radially along the second connector 2, and the second mounting hole 15 is arranged axially along the second connector 2. The retaining plate 8 is disposed in the first mounting hole 14, and the pressure plate 9 is disposed in the second mounting hole 15. When the retaining plate 8 is installed in the first mounting hole 14, the side wall of the first mounting hole 14 can limit the retaining plate 8, thereby restricting its axial movement. The pressure plate 9 is located in the second mounting hole 15, and the depth of the second mounting hole 15 is greater than the thickness of the pressure plate 9. The pressure plate 9 does not protrude from the second mounting hole 15. The pressure plate 9 and the retaining plate 8 are integrally formed. The buckle 11 and the retaining plate 8 are also integrally formed.

[0034] Furthermore, as a preferred implementation, the anti-loosening connector 4 is arranged in a "┏" shape;

[0035] A spring 16 is provided at the lower end of the pressure plate 9. One end of the spring 16 is connected to the pressure plate 9, and the other end is connected to the bottom wall of the second mounting hole 15. When the spring 16 is in an extended state, it applies an upward elastic force to the pressure plate 9, thereby keeping the latch 11 of the clamping plate 8 tightly engaged with the groove 7 of the threaded connector 3. When the pressure plate 9 is pressed down, the spring 16 can be compressed.

[0036] The first connector 1 can be various devices or components that need to be connected, such as pipes, instruments, etc. The first connector 1 can be designed with a structure that mates with the threaded connector 3, such as internal threads, grooves 7 or other fixing structures, to ensure that one end of the threaded connector 3 can be securely installed in the first connector 1.

[0037] The material of threaded connector 3 can be selected according to actual application requirements. Commonly used materials include stainless steel, copper alloy, and engineering plastics. Different materials have different strengths, corrosion resistance, and service lives. In high-pressure, high-temperature, or corrosive environments, corrosion-resistant and high-strength materials can be selected.

[0038] The number of slots 7 can be designed according to actual needs, usually 3-8 slots 7 are set. The more slots 7 there are, the more locking positions can be selected, and the higher the connection accuracy. The depth of the slots 7 is usually 0.5-2 mm, and the width is 1-3 mm. This size ensures the reliability of the snap-fit ​​without excessively weakening the strength of the threaded connector 3.

[0039] The clamping plate 8 and pressure plate 9 of the anti-loosening connector 4 can be made of elastic metal or high-strength engineering plastic. The pressure plate 9 needs to have sufficient strength to withstand the pressing pressure, and its surface can also be designed with anti-slip textures to improve the comfort and reliability of operation.

[0040] The spring force of spring 16 can be designed according to needs, ensuring that the clip 11 can reliably engage with the slot 7, but not so great that it would make disassembly difficult. Typically, the spring force of spring 16 is between 5 and 20 Newtons, and the specific value can be adjusted according to the usage scenario.

[0041] This threaded connector with its anti-loosening structure is suitable for various scenarios requiring prevention of threaded connections from loosening, such as mechanical equipment, pipe connections, and instruments. Especially in environments with vibration, impact, or frequent temperature changes, this structure effectively prevents threaded connections from loosening due to vibration, improving the safety and reliability of the equipment.

[0042] In use, firstly, insert one end of the threaded connector 3 into the first connector 1 and fix it in place. Then, by rotating the knob 5 of the threaded connector 3, the external thread 6 of the threaded connector 3 engages with the internal thread of the second connector 2, thus connecting the two connectors. During this process, the pressure plate 9 can be pressed down, causing it to compress the spring 16 and move the locking plate 8 and the latch 11 downwards. After the locking plate 8 moves downwards into place, the limiting part 13 is fully engaged in the limiting groove 12, preventing the locking plate 8 from moving further downwards. After the locking plate 8 moves downwards into place, the round hole 10 on the locking plate 8 is aligned with the threaded connector 3. Then, continue rotating the threaded connector 3, allowing it to pass through the round hole 10. When the threaded connector 3 is rotated into place, the retaining groove 7 on the threaded connector 3 aligns with the latch 11 of the anti-loosening connector 4. Then, release the pressure plate 9. Under the action of the spring 16, the latch 11 can automatically engage in the retaining groove 7, forming a locking structure. This locking structure can effectively prevent the threaded connector 3 from loosening under vibration or external force, improving the reliability of the connection.

[0043] When disassembly is required, simply press the pressure plate 9 to compress the spring 16, causing the clip 11 to disengage from the slot 7, and then rotate the threaded connector 3 to achieve disassembly. This design ensures both the strength of the connection and the convenience of assembly and disassembly.

[0044] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A threaded joint anti-loosening structure, characterized in that, The device includes a first connector, a second connector, a threaded connector, and an anti-loosening connector. One end of the threaded connector is located inside the first connector, and the other end of the threaded connector is threadedly connected to the second connector. The anti-loosening connector is located inside the second connector, and the other end of the threaded connector is engaged with the anti-loosening connector. The outer wall of the threaded connector has an external thread and several slots arranged sequentially from the middle to the other end. The anti-loosening connector includes a retaining plate and a pressure plate. The pressure plate is located at the upper end of the retaining plate, and the retaining plate is located inside the second connector. A circular hole is opened in the middle of the retaining plate, and a buckle that mates with the slot is provided on the bottom wall of the circular hole. Several buckles are inclined in the same direction. A first mounting hole is opened inside the second connector, and a second mounting hole is opened at the upper end of the second connector. The first mounting hole communicates with the second mounting hole. A spring is provided at the lower end of the pressure plate, one end of the spring is connected to the pressure plate, and the other end of the spring is connected to the bottom wall of the second mounting hole.

2. The threaded joint anti-loosening structure as described in claim 1, characterized in that, A knob is provided in the middle of the threaded joint.

3. The threaded joint anti-loosening structure as described in claim 2, characterized in that, Several of the aforementioned slots are arranged in a ring on the outer wall of the threaded joint.

4. The threaded joint anti-loosening structure as described in claim 3, characterized in that, The lower end of the card plate has limit grooves on both sides, and the inner wall of the second connector is provided with a limiting part that cooperates with the limit grooves.

5. The threaded joint anti-loosening structure as described in claim 3, characterized in that, The first mounting hole is arranged radially along the second connector, the second mounting hole is arranged axially along the second connector, the clamping plate is disposed in the first mounting hole, and the pressure plate is disposed in the second mounting hole.

6. The threaded joint anti-loosening structure as described in claim 5, characterized in that, The anti-loosening joint is arranged in a "┏" shape.

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