Adjustable conversion nut

Abstract

The utility model relates to adjustable connecting piece technical field discloses a kind of adjustable conversion nut, including small tube, large tube and reinforcing component, small tube is movably inserted in the inside of large tube, nut sleeve is installed on the outside of small tube end part, large tube end part outside is buckled with screw thread, nut sleeve and screw thread are threadedly matched to realize telescopic adjustment;Reinforcing component contains the pipe plug inserted into the inside of small tube end head, pipe plug and small tube inner wall are closely combined, two lock catches A are symmetrically provided on the outside wall of pipe plug, small tube inner wall is opened lock catch hole A, lock catch A and lock catch hole A are connected to fix pipe plug, enhance small tube end part strength. Preferred still contain positioning component, it includes the two lock catches B that the outside wall of screw thread is symmetrically provided, large tube inner wall is opened lock catch hole B, lock catch B and lock catch hole B are connected, improve screw thread and large tube connection stability, overall structure can avoid sliding or shaking, guarantee use safety.

Description

Technical Field

[0001] This utility model belongs to the technical field of adjustable connectors, specifically relating to an adjustable conversion nut. Background Technology

[0002] In everyday assistive devices such as shower chairs, toilet chairs, and canes, as well as equipment requiring telescopic adjustment, adjustable telescopic tube connection mechanisms are typically needed to accommodate different users' heights, usage habits, or usage scenarios. The conversion nut, as the core connecting component of such mechanisms, directly determines the stability and safety of the equipment. Currently, most adjustable tube connection structures on the market rely on a simple design of a small tube and a large tube fitting together with a threaded locking mechanism. The overall length is adjusted by the depth of the small tube inserted into the large tube, and then locked using the nut and thread to meet basic telescopic adjustment needs.

[0003] The existing adjustable tube connection structure has obvious defects: the end of the small tube, as the connection part with the nut sleeve, is subjected to the pressure and external impact during the thread locking for a long time, but its inner wall is not provided with any reinforcing structure, resulting in insufficient strength of the end of the small tube. When frequently adjusted or bearing weight, local deformation is prone to occur, which in turn causes a gap to still exist after the nut sleeve and the thread are locked. During use, slippage is prone to occur, which seriously affects the stability of the equipment. For example, if the cane slips during use, it may cause the user to fall.

[0004] Meanwhile, the existing structure lacks a fixed design for the internal components of the small tube. Even if some products add support components inside the small tube, they are not securely connected to the inner wall of the small tube through an effective positioning structure. The support components are prone to sliding or rotating inside the small tube, and cannot continuously provide stable support for the end of the small tube. Furthermore, the connection between the large tube and the threaded connection relies only on simple snap-fitting, without forming a reliable positioning fit. After long-term use, the threaded connection is prone to shifting, further aggravating the shaking problem of the overall structure and failing to meet the core requirements of the equipment for connection tightness and stability. Utility Model Content

[0005] The present invention aims to solve the technical problems in the prior art, namely, the lack of a reinforcing structure at the end of the small and medium-sized tubes, resulting in insufficient strength and easy deformation, which may cause the nut sleeve to slide even after being locked with the thread, and the lack of stable positioning for any supporting components inside the small tube, making it easy to slide or rotate; and the simple snap-fit ​​connection between the large tube and the thread without reliable positioning, which makes the thread easy to shift after long-term use or frequent adjustment, exacerbating the shaking of the overall structure and failing to meet the requirements for connection stability.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An adjustable conversion nut, comprising:

[0008] The small tube is movably inserted inside the large tube, and the nut on the small tube is installed on the outside of the end of the small tube;

[0009] The large tube has threads fastened to the outer side of its end, and the nut sleeve engages with the threads to lock and fix the small tube and the large tube together.

[0010] The reinforcing component includes a tube plug inserted into the inner side of the end of the small tube, with the tube plug tightly fitting against the inner wall of the small tube. The tube plug has two locking buckles A fixed symmetrically to its outer wall. The inner wall of the small tube has locking holes A with the locking buckles A at corresponding positions. The cooperation of the small tube, the large tube, and the reinforcing component can enhance the strength of the end of the small tube and prevent the tube plug from sliding. At the same time, the threaded engagement enables telescopic adjustment and secure locking, preventing slippage after adjustment.

[0011] Preferably, the device also includes a positioning component, which includes two latches B fixed symmetrically to the outer wall of the thread. A latch hole B is provided on the inner wall of the large tube corresponding to the position of the latches B. The latches B and the latch holes B are engaged. The engagement of the latches B and the latch holes B of the positioning component can achieve axial fixation of the thread and the large tube, prevent the thread from falling off the large tube and reduce the offset of the thread.

[0012] Preferably, the positioning component also includes positioning protrusions, which are symmetrically and integrally formed on the inner wall of the thread. A positioning groove is provided on the inner wall of the large tube corresponding to the position of the positioning protrusion. The positioning protrusion and the positioning groove are fitted together. The locking buckle B of the positioning component is engaged with the locking hole B, which can realize the axial fixation of the thread and the large tube, prevent the thread from falling off the large tube and reduce the offset of the thread.

[0013] As a preferred option, the tube plug is made of hard engineering plastic. Using hard engineering plastic can provide stable support for the end of the tube while ensuring lightweight design, thus preventing the tube plug itself from being easily damaged.

[0014] As a preferred choice, the rigid engineering plastic material is ABS plastic, and the tube plug is made of ABS plastic, which has high strength, impact resistance and good formability, and can more effectively enhance the strength of the tube end and prevent the tube plug from deforming.

[0015] As a preferred option, the latch B is made of elastic plastic and has a snap-fit ​​protrusion at its end. The use of elastic plastic and the snap-fit ​​protrusion at the end of the latch B facilitates the insertion of the latch B during installation and ensures that it is not easy to loosen after snapping, thereby improving assembly efficiency and connection reliability.

[0016] Preferably, the positioning protrusion is U-shaped, and the positioning groove is a U-shaped groove that fits the positioning protrusion. Setting the positioning protrusion and the positioning groove to fit each other in a U-shape can improve the fit between the two, prevent the positioning protrusion from slipping out of the positioning groove, and ensure stable positioning effect.

[0017] Compared with the prior art, the technical effects and advantages of this utility model are:

[0018] This invention effectively solves the problem of insufficient strength at the end of the small tube in the prior art by setting a reinforcing component on the inner side of the small tube end. The tube plug in the reinforcing component fits tightly against the inner wall of the small tube, providing stable support for the end of the small tube and preventing local deformation of the small tube due to stress during the tightening of the nut sleeve and thread. At the same time, the locking buckle A on the tube plug engages with the locking hole A on the inner wall of the small tube, which can firmly fix the tube plug in the small tube, preventing the tube plug from sliding or rotating, ensuring that the end of the small tube always maintains sufficient strength, thereby avoiding slippage after adjustment and significantly improving the stability of the overall structure.

[0019] Regarding the connection between the main tube and the threaded connection, this invention ensures the reliability of the connection through optimized design. The threaded connection on the outer side of the main tube end, in conjunction with a subsequently added positioning component, effectively restricts the displacement and rotation of the threaded connection, avoiding the problems of threaded displacement and loosening found in existing technologies. This connection method not only provides a stable foundation for the threaded engagement between the nut sleeve and the threaded connection, but also prevents gaps from appearing between the threaded connection and the main tube after long-term use or frequent adjustments. Structurally, it reduces the possibility of the overall mechanism wobbling from side to side, improving safety during use.

[0020] The core advantage of this invention lies in its optimized structural design, which significantly improves the tightness and stability of the adapter nut. Both the reinforcing components at the end of the smaller tube and the connection design between the larger tube and the threaded joint are designed to enhance connection reliability. This ensures a secure lock between the smaller and larger tubes after expansion and contraction adjustments, effectively overcoming the shortcomings of existing technologies where connectors are prone to loosening and have poor stability. This stable connection performance allows the adapter nut to maintain good condition during long-term use, reducing malfunctions caused by connection problems and extending the overall product lifespan.

[0021] This utility model features a structural design that balances practicality and adaptability, making it widely applicable. Its overall structure is simple and easy to adjust, allowing for the extension and retraction of both the small and large tubes without complex operations. It also provides stable compatibility with various products requiring adjustable height or length, such as shower chairs, toilet chairs, and walking sticks. Compared to existing connectors with limited adaptability and prone to problems after adjustment, this utility model better meets the needs of different products, providing strong support for the stable operation of various auxiliary devices or equipment and enhancing the user experience. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is an exploded view of the present invention;

[0024] Figure 3This is a schematic diagram of the structure of the small tube and the tube plug of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the large tube and the thread of this utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the small tube of this utility model;

[0027] Figure 6 This is a schematic diagram of the tube plug of this utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the large tube of this utility model;

[0029] Figure 8 This is a schematic diagram of the thread structure of this utility model.

[0030] In the diagram: 1. Small tube; 2. Nut sleeve; 3. Large tube; 4. Thread; 5. Pipe plug; 6. Lock A; 7. Lock hole A; 8. Lock B; 9. Lock hole B; 10. Positioning protrusion; 11. Positioning groove; 12. Snap-fit ​​protrusion. Detailed Implementation

[0031] 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.

[0032] The following combination Figures 1 to 8 This application will be described in further detail;

[0033] This application discloses an adjustable conversion nut, comprising a small tube 1, a large tube 3, a nut sleeve 2, and a thread 4. The small tube 1 is movably inserted into the large tube 3, forming the basic carrier for telescopic adjustment. The nut sleeve 2 is installed on the outer end of the small tube 1, and the thread 4 is fastened to the outer end of the large tube 3, with the nut sleeve 2 and the thread 4 forming a threaded engagement. The core function of this structure is to achieve flexible length adjustment. By rotating the nut sleeve 2, the depth to which the small tube 1 is inserted into the large tube 3 can be changed to meet the length requirements in different scenarios. The adjustment operation is simple and convenient, and can be completed without complicated tools. Its practical application is reflected in its ability to quickly adjust according to the user's height and usage habits when adapting to products such as shower chairs, toilet chairs, and canes. For example, canes can be adjusted to adapt to people of different heights, improving the product's versatility.

[0034] To enhance the structural strength of the end of the small tube 1, this nut is equipped with a reinforcing component, which includes a tube plug 5, a locking buckle A6, and a locking hole A7. The tube plug 5 is inserted into the inner side of the end of the small tube 1 and fits tightly against the inner wall of the small tube 1. Two locking buckles A6 are symmetrically fixed on the outer wall of the tube plug 5. The inner wall of the small tube 1 has corresponding locking holes A7 that are adapted to the locking buckles A6. The locking buckles A6 and the locking holes A7 engage to strengthen the inner wall strength of the end of the small tube 1 and prevent deformation of the end of the small tube 1 when the thread is tightened. This can improve the deformation resistance of the end of the small tube 1 and extend the service life of the component. When the nut sleeve 2 and the thread 4 are tightened, the end of the small tube 1 will not deform locally due to insufficient strength, thereby preventing slippage after adjustment and ensuring the stability of the overall structure.

[0035] The adjustable conversion nut of this utility model also includes a positioning component. This component first achieves initial fixation of the thread 4 and the large tube 3 through the locking buckle B8 and the locking hole B9. Two locking buckles B8 are symmetrically fixed on the outer wall of the thread 4. The inner wall of the large tube 3 has a locking hole B9 corresponding to the position of the locking buckle B8. The locking buckle B8 and the locking hole B9 engage to provide axial fixation for the thread 4 and the large tube 3. This can prevent the thread 4 from falling off the end of the large tube 3 and initially limit the displacement of the thread 4. During long-term use or under pressure, the thread 4 will not detach from the large tube 3, reducing the risk of overall shaking caused by the loosening of the thread 4 and improving the safety of use.

[0036] The positioning component also includes positioning protrusions 10 and positioning grooves 11, which further optimize the connection stability between the threaded thread 4 and the large tube 3. The two positioning protrusions 10 are symmetrically integrally formed on the inner sidewall of the threaded thread 4. The inner wall of the large tube 3 is provided with positioning grooves 11 corresponding to the positions of the positioning protrusions 10. The positioning protrusions 10 and positioning grooves 11 are fitted together to restrict the circumferential rotation of the threaded thread 4 on the large tube 3, forming a double positioning of axial and circumferential positioning with the locking buckle B8. This ensures that the relative position of the threaded thread 4 and the large tube 3 is fixed, and prevents the threaded thread 4 from shifting when the threaded engagement is performed. When adjusting the nut sleeve 2, the threaded thread 4 will not rotate with the rotation of the nut sleeve 2, ensuring a smooth adjustment process, while further improving the connection tightness between the large tube 3 and the threaded thread 4.

[0037] The tube plug 5 is preferably made of hard engineering plastic. The function of this material is to provide stable support for the end of the tube 1 while ensuring lightweight. It also has a certain strength and corrosion resistance, so it will not rust or break due to long-term use. It can continuously enhance the strength of the end of the tube 1, and prevent the tube plug 5 from being damaged and affecting the stability of the tube 1. It is suitable for various scenarios such as humid environments like shower chairs and dry environments, and extends the overall service life of the product.

[0038] The rigid engineering plastic is further preferably ABS plastic. The function of ABS plastic is to enhance the overall performance of the tube plug 5 by virtue of its own properties; it has high strength, impact resistance and good formability, which can effectively enhance the strength of the end of the tube 1 and prevent the tube plug 5 from deforming due to force; after long-term use, the tube plug 5 can still maintain its structural integrity and continuously provide support for the end of the tube 1. Even if it is subjected to slight external impact, it will not be easily damaged, ensuring a stable locking effect.

[0039] The locking buckle B8 is made of elastic plastic, and its end has a 12-point snap-fit ​​protrusion. The elastic plastic facilitates the deformation and insertion of the locking buckle B8 during installation. The function of the snap-fit ​​protrusion 12 is to lock the locking buckle B8 into the locking hole B9. This reduces the difficulty of assembly, allowing the installation of the locking buckle B8 to be completed without additional tools. At the same time, it ensures the snap-fit ​​strength between the locking buckle B8 and the locking hole B9, making it less prone to loosening. It also improves the efficiency of assembly. During use, the locking buckle B8 will not fall out of the locking hole B9, continuously ensuring the axial fixation effect of the thread 4 and the large tube 3.

[0040] During assembly, first insert the tube plug 5 into the inner side of the end of the small tube 1, aligning and engaging the locking buckle A6 on the outer wall of the tube plug 5 with the locking hole A7 on the inner wall of the small tube 1 to secure the tube plug 5. Then, fasten the thread 4 onto the outer side of the end of the large tube 3, inserting the locking buckle B8 on the outer wall of the thread 4 into the locking hole B9 on the inner wall of the large tube 3. The engaging protrusion 12 at the end of the locking buckle B8 engages with the locking hole B9, while simultaneously ensuring that the U-shaped positioning protrusion 10 on the inner wall of the thread 4 engages with the U-shaped positioning groove 11 on the inner wall of the large tube 3, thus securing the thread 4 to the large tube 3. Finally, insert the small tube 1 into the large tube 3, rotate the nut sleeve 2, and screw the nut sleeve 2 into the threaded engagement of the thread 4. Adjust the insertion depth of the small tube 1 into the large tube 3 according to the required length, and tighten to achieve a secure lock.

[0041] During use, if the length needs to be adjusted, rotate the nut sleeve 2 in the opposite direction to loosen the nut sleeve 2 from the thread 4, pull the small tube 1 to the appropriate position, and then tighten the nut sleeve 2 again. The tube plug 5 enhances the strength of the end of the small tube 1, and the positioning component ensures a stable connection between the thread 4 and the large tube 3. The overall structure effectively prevents slippage or shaking, ensuring safe use.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable conversion nut, characterized in that, include: The small tube (1) is movably inserted inside the large tube (3), and the nut sleeve (2) on the small tube (1) is installed on the outside of the end of the small tube (1); The large tube (3) has a threaded thread (4) fastened to the outer side of its end, and the nut sleeve (2) and the threaded thread (4) are threaded together to lock the small tube (1) and the large tube (3) together; The reinforcing component includes a tube plug (5) inserted into the inner side of the end of the small tube (1), and the tube plug (5) is tightly fitted to the inner wall of the small tube (1). The tube plug (5) is provided with two locks A (6) fixed symmetrically to its outer wall. The inner wall of the small tube (1) is provided with lock holes A (7) provided by the symmetrical locks A (6) at the corresponding positions.

2. An adjustable conversion nut according to claim 1, wherein: It also includes a positioning component, which includes two latches B (8) fixed symmetrically on the outer wall of the thread (4). The inner wall of the large tube (3) is provided with latch holes B (9) corresponding to the latches B (8), and the latches B (8) and latch holes B (9) are engaged.

3. An adjustable conversion nut according to claim 2, wherein: The positioning component also includes positioning protrusions (10), which are integrally formed on the inner wall of the thread (4) in a symmetrical shape. The inner wall of the large tube (3) is provided with positioning grooves (11) corresponding to the positions of the positioning protrusions (10), and the positioning protrusions (10) and positioning grooves (11) are fitted together.

4. An adjustable conversion nut according to claim 1, characterized in that: The tube plug (5) is made of hard engineering plastic.

5. An adjustable conversion nut according to claim 4, characterized in that: The rigid engineering plastic material is ABS plastic.

6. An adjustable conversion nut according to claim 2, characterized in that: The latch B (8) is made of elastic plastic material, and the end of the latch B (8) is provided with a snap-fit ​​protrusion (12).

7. An adjustable conversion nut according to claim 3, characterized in that: The positioning protrusion (10) is U-shaped, and the positioning groove (11) is a U-shaped groove that is adapted to the positioning protrusion (10).

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