A multi-functional quick-connect connector

Abstract

This utility model provides a multifunctional quick-install connector, relating to the field of furniture hardware technology. It includes a nut, an expansion plug, and a locking rod. The nut has an expansion portion that is hollow and has a through-hole on both its upper and lower surfaces. The expansion portion is elastic and contains a lock cylinder with an external thread at its lower part. The expansion plug is hollow and has a first internal thread that matches the external thread. The locking rod includes a rod body, one end of which is connected to a rod head via a connecting rod. The rod head matches the lock cylinder. The other end of the rod body is threaded to a rod expansion component. An expansion sleeve is fitted over the rod body; the expansion sleeve is elastic and positioned below the rod expansion component. This utility model allows for selection of expansion or non-expansion based on actual usage, offering high adaptability. Furthermore, in special scenarios involving shared upright panels, the connector locks two nuts within the hole, utilizing the mutual pulling force of the two plates to provide the nuts with excellent pull-out force and stability.

Description

Technical Field

[0001] This utility model relates to the field of furniture hardware technology, and in particular to a multifunctional quick-install connector. Background Technology

[0002] A connector is a connecting mechanism used in furniture. It is used to assemble the finished product by installing and locking it onto the pre-processed furniture substrate. Furniture on the market generally uses "three-in-one connectors" or "four-in-one connectors" to connect the panels. However, these methods leave visible holes (eccentric wheels) in the furniture, making the connectors partially or completely visible after assembly. This reduces the overall aesthetics and durability of the furniture, and limits its design flexibility and design possibilities.

[0003] Furniture production and sales are gradually trending towards a front-end sales, back-end manufacturing model. The factory processes the panels, which are then transported to the end consumer for assembly. In this model, economy and convenience are crucial factors to consider both the production and installation processes. Currently, furniture on the market uses "three-in-one connectors" to join panels, which cannot be pre-installed in the factory and must be tightened with screws on-site. This easily leads to problems such as missing, incorrectly installed, or damaged hardware. Since the installation site is often far from the factory, these issues result in very high after-sales costs. Furthermore, the cumbersome on-site installation significantly increases labor costs and can lead to a poor delivery experience for the end consumer.

[0004] Post-production furniture transportation is a crucial part of the delivery service. Using pre-assembled "three-in-one connectors" prevents the flat packaging of panels during transport, increasing transportation costs and the probability of panel damage. This hinders the establishment of the furniture factory's delivery system and is detrimental to improving production efficiency.

[0005] With the widespread adoption of online shopping and efficient furniture sales methods like IKEA, easy packaging, tool-free assembly, and standardized installation of furniture are becoming increasingly important. Traditional three-in-one connectors require a more cumbersome process, more tools, and more steps, which limits their effectiveness in this sales model. The industry trend demands a convenient, robust, tool-free, and quick-assembly connector product.

[0006] The current trend of furniture customization is sweeping the industry, and non-standard size customization and non-standard product production bring greater processing difficulties to furniture manufacturers. The process of assembling cabinets using traditional "three-in-one connectors" requires high precision in hole machining and panel dimensional accuracy. Errors can easily lead to uneven panel placement after cabinet assembly.

[0007] Furniture products often encounter special situations such as after-sales repairs after delivery to the end consumer. Furniture using "three-in-one connectors" to join panels requires disassembling the entire cabinet. In residential environments, cumbersome after-sales service can easily lead to dissatisfaction among end consumers. Therefore, the need for connectors that allow for the removal of individual panels is becoming increasingly important.

[0008] Furthermore, furniture or cabinets assembled and delivered using "three-in-one connectors" often experience loosening of the internal cam lock components after prolonged use, sometimes even detaching from the pre-drilled holes in the panels. This can cause the cabinet structure to become loose and wobbly. Such problems require frequent re-tightening of the cam locks, making furniture maintenance cumbersome and burdensome. While expansion joints are used to address the stability issue, they cannot be effectively expanded in some environments. Therefore, current connectors suffer from limited functionality and poor adaptability. Utility Model Content

[0009] To address the problem of poor adaptability of connectors in existing technologies, this utility model provides a multifunctional quick-install connector that can be expanded or not expanded according to actual usage, exhibiting high adaptability. At the same time, regardless of the chosen solution, the connector maintains high stability and tensile strength.

[0010] To achieve the above objectives, this utility model provides the following technical solution:

[0011] In a first aspect, a multifunctional quick-connect fitting includes:

[0012] A nut having an expansion portion, the expansion portion being hollow and having a through-hole between its upper and lower surfaces, the expansion portion being elastic, and a lock core being provided inside the expansion portion, the lower part of the lock core having an external thread;

[0013] An expansion plug having a hollow interior and a first internal thread that is adapted to the external thread;

[0014] A locking rod includes a rod body, one end of which is connected to a rod head via a connecting rod. The rod head is adapted to the lock cylinder. The other end of the rod body is threadedly connected to a rod expansion member. An expansion sleeve is fitted over the rod body. The expansion sleeve is elastic and positioned below the rod expansion member.

[0015] Specifically, the expansion plug is driven to insert into the expansion part and move towards the lock cylinder, thereby expanding the expansion part outward; the rod body is rotated so that the rod expansion member moves towards the expansion sleeve, thereby expanding the expansion sleeve outward.

[0016] As described above, the multifunctional quick-connect fitting further includes a first limiting groove at the lower part of the expansion portion, the first limiting groove being opened along the height direction of the expansion portion, and a first limiting block being provided on the expansion plug, the first limiting block being adapted to the first limiting groove.

[0017] As described above, the multi-functional quick-connect fitting further includes a first inclined surface within the expansion portion, the first inclined surface being downward and inclined in a direction away from the central axis of the expansion portion, and the expansion plug having a second inclined surface, the second inclined surface being upward and inclined in a direction close to the central axis of the expansion plug, wherein the first inclined surface and the second inclined surface are adapted to each other.

[0018] As described above, the multifunctional quick-connect fitting further includes a guide portion with a groove and a slide groove, a notch on the side wall of the lock cylinder, an incline from the groove to the notch, and an expansion portion with two opposing bosses that are arc-shaped and elastic.

[0019] As described above, the multifunctional quick-connect fitting further includes reverse teeth on the outer surfaces of the expansion portion and the guide portion, and a through hole penetrating its upper and lower surfaces in the sliding groove, with a magnetic block installed inside the through hole.

[0020] As described above, the multifunctional quick-connect fitting further includes a second limiting groove on the upper part of the expansion sleeve, the second limiting groove being opened along the height direction of the expansion sleeve, and a second limiting block being provided on the rod expansion member, the second limiting block being adapted to the second limiting groove.

[0021] Secondly, a multifunctional quick-connect fitting includes:

[0022] Two nuts, each nut having an expansion portion, the expansion portion being hollow and having a through surface on the upper and lower surfaces, a lock cylinder being provided inside the expansion portion, the lower part of the lock cylinder having an external thread;

[0023] A connecting plug, which is hollow inside and has a second internal thread that is adapted to the external thread;

[0024] Two locking rods, each of the locking rods includes a rod body, one end of the rod body is connected to a rod head via a connecting rod, the rod head is adapted to the lock cylinder, the other end of the rod body is threaded to a rod expansion member, and the rod body is covered with an expansion sleeve, the expansion sleeve is elastic and located below the rod expansion member;

[0025] The two nuts are mirror images of each other and are spliced ​​together by the connecting plug; the rod is rotated so that the rod expansion member moves toward the expansion sleeve, thereby expanding the expansion sleeve outward.

[0026] As described above, the multifunctional quick-connect fitting further includes a guide portion with a groove and a slide groove, a notch on the side wall of the lock cylinder, an incline from the groove to the notch, and an expansion portion with two opposing bosses that are arc-shaped and elastic.

[0027] As described above, the multifunctional quick-connect fitting further includes reverse teeth on the outer surfaces of the expansion portion and the guide portion, and a through hole penetrating its upper and lower surfaces in the sliding groove, with a magnetic block placed inside the through hole.

[0028] As described above, the multifunctional quick-connect fitting further includes a second limiting groove on the upper part of the expansion sleeve, the second limiting groove being opened along the height direction of the expansion sleeve, and a second limiting block being provided on the rod expansion member, the second limiting block being adapted to the second limiting groove.

[0029] Compared with the prior art, the advantages of this utility model are as follows:

[0030] When expansion is required, this invention can achieve expansion by using an expansion plug in conjunction with a nut; when expansion is not required, the two nuts can be fastened together by a connecting plug, making it highly adaptable. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the connector structure in an embodiment of the utility model;

[0033] Figure 2 This is a schematic diagram of the nut (with an expansion plug) in an embodiment of the present invention;

[0034] Figure 3 This is a schematic diagram of the nut (with an expansion plug) in an embodiment of the present invention;

[0035] Figure 4 This is a front view of the nut (with an expansion plug) in an embodiment of this utility model;

[0036] Figure 5 This is a top view of the nut (with an expansion plug) in an embodiment of this utility model;

[0037] Figure 6This is a schematic diagram of the nut (without expansion plug) in an embodiment of this utility model;

[0038] Figure 7 This is a schematic diagram of the expansion plug structure in an embodiment of the present utility model;

[0039] Figure 8 This is a schematic diagram of the locking rod in an embodiment of the present utility model;

[0040] Figure 9 A schematic diagram of the connecting parts (two nuts and two locking rods) in this embodiment of the utility model;

[0041] Figure 10 This is a structural schematic diagram of the connector (two nuts) in an embodiment of this utility model;

[0042] Figure 11 This is a structural schematic diagram of the connector (two nuts) in an embodiment of this utility model;

[0043] Figure 12 This is a top view of the connector (two nuts) in an embodiment of this utility model;

[0044] Figure 13 for Figure 12 Cross-sectional view at point AA;

[0045] Figure 14 This is a schematic diagram of the connecting plug in an embodiment of the present utility model;

[0046] In the diagram: 1. Nut; 2. Expansion insert; 3. Connecting insert; 4. Expansion part; 5. Lock cylinder; 6. External thread; 7. First internal thread; 8. Second internal thread; 9. First limiting groove; 10. First limiting block; 11. First inclined surface; 12. Second inclined surface; 13. Guide part; 14. Groove; 15. Slide groove; 16. Notch; 17. Boss; 18. Backtooth; 19. Through hole; 20. Magnetic block; 21. Locking rod; 22. Connecting rod; 23. Rod head; 24. Rod expansion component; 25. Expansion sleeve; 26. Second limiting groove; 27. Second limiting block. Detailed Implementation

[0047] The technical solutions of the present invention 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 this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0048] Example:

[0049] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, in the embodiments of this utility model are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0050] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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.

[0051] In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" 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.

[0052] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0053] In a first aspect, this utility model provides a technical solution: a multifunctional quick-connect connector, comprising a nut 1, an expansion insert 2, and a locking rod 21. The nut 1 has an expansion portion 4, which is hollow and has a through-hole on its upper and lower surfaces. The expansion portion 4 is elastic and has a locking core 5 inside. The lower part of the locking core 5 has an external thread 6. The expansion insert 2 is hollow inside and has a first internal thread 7, which is adapted to the external thread 6. The locking rod 21 includes a rod body. One end of the rod body is connected to a rod head 23 via a connecting rod 22. The rod head 23 is adapted to the locking core 5. The other end of the rod body is threadedly connected to a rod expansion member 24. An expansion sleeve 25 is provided over the rod body. The expansion sleeve 25 is elastic and is located below the rod expansion member 24. The expansion insert 2 is driven to insert into the expansion portion 4 and move towards the locking core 5, thereby expanding the expansion portion 4 outward. The rod body is rotated so that the rod expansion member 24 moves towards the expansion sleeve 25, thereby expanding the expansion sleeve 25 outward.

[0054] Specifically, see Figures 1 to 8 Depending on the actual installation material, if expansion is required for fixation, first insert the expansion plug 2 into the lower part of the expansion section 4, ensuring the first internal thread 7 of the expansion plug 2 contacts the external thread 6 of the lock cylinder 5. Then, install the nut 1 in the mounting hole of the material. Finally, use a tool to rotate the lock cylinder 5 so that the expansion plug 2 is forced to move towards the lock cylinder 5 (the interaction force between the external thread 6 and the first internal thread 7 will drive the expansion plug 2 to move), thereby expanding the expansion section 4 outwards, and thus securing the nut 1 in the mounting hole of the material. Alternatively, the locking rod is installed in the mounting hole of another material. Using a tool to rotate the rod head 23 causes the rod body to rotate, causing the rod expansion component 24 to move towards the expansion sleeve 25, thereby expanding the expansion sleeve 25 outwards, achieving the effect of securing the locking rod 21 in the mounting hole of the material.

[0055] As an optional implementation, in some embodiments, a first limiting groove 9 is provided at the lower part of the expansion portion 4. The first limiting groove 9 is provided along the height direction of the expansion portion 4, and a first limiting block 10 is provided on the expansion insert 2, the first limiting block 10 being adapted to the first limiting groove 9. See again... Figures 2 to 4 When the lock cylinder 5 is rotated, the expansion plug 2 cannot rotate due to the cooperation of the first limiting groove 9 and the first limiting block 10. The expansion plug 2 will be subjected to an upward pulling force. Under the guidance of the first limiting block 10, the expansion plug 2 moves towards the lock cylinder 5, causing the expansion part 4 to expand outward. The overall structural design is simple and ingenious.

[0056] As an optional implementation, in some embodiments, the expansion portion 4 has a first inclined surface 11, which is downward and inclined in a direction away from the central axis of the expansion portion 4. The expansion plug 2 has a second inclined surface 12, which is upward and inclined in a direction close to the central axis of the expansion plug 2. The first inclined surface 11 and the second inclined surface 12 are adapted to each other. See again... Figure 6 and Figure 7 The first inclined surface 11 and the second inclined surface 12 have the same inclination. Since the expansion part 4 is elastic, when the expansion plug 2 moves upward to the first inclined surface 11, the second inclined surface 12 of the expansion plug 2 fits against the first inclined surface 11, so that the expansion plug 2 can continue to move upward, thereby expanding the expansion part 4 outward.

[0057] As an optional implementation, in some implementations, the nut 1 also has a guide portion 13, the guide portion 13 has a groove 14 and a slide groove 15, the side wall of the lock cylinder 5 has a notch 16, the slide groove 15 is inclined from the groove 14 to the notch 16, and the expansion portion 4 is also provided with two oppositely arranged bosses 17, the two bosses 17 are arc-shaped and elastic.

[0058] Specifically, see again Figure 2 and Figure 5 The guide portion 13 of nut 1 allows the locking rod to slide along the groove 15 towards the lock cylinder 5 after being inserted into the slot 14. The rod head enters the lock cylinder 5 through the notch 16 to achieve locking. The distance between the two bosses 17 can be slightly smaller than the rod body. Combined with the elasticity of the bosses themselves, when the locking rod slides between the two bosses 17, the external force causes elastic deformation of the two bosses 17, allowing the locking rod to pass through. After the locking rod passes through the two bosses 17, the two bosses 17 return to their original state, forming a narrow channel behind the locking rod. Without a certain degree of external force, the locking rod cannot return on its own, thus preventing children from accidentally disassembling the plate and increasing the stability of the installation.

[0059] In the above embodiments, furthermore, both the expansion portion 4 and the guide portion 13 are provided with reverse teeth 18 on their outer surfaces. See again... Figure 4 This further increases the friction between the material and the inner wall of the substrate.

[0060] In the above embodiment, the slide groove 15 is further provided with a through hole 19 extending through its upper and lower surfaces, and a magnetic block 20 is disposed within the through hole 19. See again... Figure 3 and Figure 5A through hole is made in the slide groove 15 to install a magnetic block 20. One side of the magnetic block 20 is flush with the upper surface of the slide groove 15. In this way, when the head of the lock bar is made of ferromagnetic material and the lock bar is telescopic (the lock head is normally locked inside the lock case), when the lock bar slides to a certain point on the surface of the slide groove 15 (above the magnetic block 20), the lock head will be attracted out by the magnetic block 20.

[0061] As an optional implementation, in some embodiments, a second limiting groove 26 is provided on the upper part of the expansion sleeve 25. The second limiting groove 26 is provided along the height direction of the expansion sleeve 25, and a second limiting block 27 is provided on the rod expansion member 24. The second limiting block 27 is adapted to the second limiting groove 26. See again... Figure 8 When the rod is rotated, the rod expansion member 24 cannot rotate due to the cooperation of the second limiting groove 26 and the second limiting block 27. The rod expansion member 24 will be subjected to a downward traction force. Under the guidance of the second limiting block 27, the rod expansion member 24 moves towards the expansion sleeve 25, causing the expansion sleeve 2 to expand outward. The overall structural design is simple and ingenious.

[0062] As an alternative implementation, in some embodiments, due to its small size, the nut fitting described in this utility model can be used for installation on a beveled surface, and with the locking rod, it can achieve a beveled connection between two plates. Its expansion structure remains applicable in beveled surface installation, giving the fitting high tensile strength and stabilizing its unique connection structure.

[0063] Secondly, this utility model provides another technical solution: a multifunctional quick-connect connector, comprising two nuts 1, a connecting plug 3, and two locking rods 21. The two nuts 1 are used in combination, and each nut 1 is paired with a locking rod 21. Each nut 1 has an expansion portion 4, which is hollow and has a through upper and lower surface. A locking core 5 is provided inside the expansion portion 4, and the lower part of the locking core 5 has an external thread 6. The connecting plug 3 is hollow inside and has a second internal thread 8, which is adapted to the external thread 6. Each locking rod 21 includes a rod body, one end of which is connected to a rod head 23 via a connecting rod 22. The rod head 23 is adapted to the locking core 5. The other end of the rod body is threadedly connected to a rod expansion member 24. An expansion sleeve 25 is provided over the rod body. The expansion sleeve 25 is elastic and is located below the rod expansion member 24. The two nuts 1 are mirror images of each other and are spliced ​​together by the connecting plug 3. Rotating the rod body causes the rod expansion member 24 to move toward the expansion sleeve 25, thereby expanding the expansion sleeve 25 outward.

[0064] Specifically, see Figures 9 to 14Depending on the actual installation of the panels, such as when sharing a single vertical panel, the mounting holes are usually through-holes. In this case, first, insert one nut 1 into the mounting hole from one side of the panel. Then, use the connecting plug 3 to thread-tighten the locking cylinder 5 of nut 1. Finally, insert another nut 1 into the mounting hole from the other side of the panel, aligning the locking cylinder 5 of this nut 1 with the connecting plug 3. Both are then thread-tightened, thus securing the nut 1 firmly in the mounting hole. In this special installation method where two panels share a single vertical panel, the mutual force between the two panels on both sides prevents either nut from being pulled out, eliminating the need to consider accessory expansion or hole avoidance, and providing the nuts with unpullable strength. Additionally, the locking rod is installed in the mounting hole of another panel. Using a tool to rotate the rod head 23 causes the rod body to rotate, causing the rod expansion member 24 to move towards the expansion sleeve 25, thereby expanding the expansion sleeve 25 outwards, achieving the effect of securely installing the locking rod 21 in the mounting hole of the panel.

[0065] As an optional implementation, in some embodiments, the nut 1 further includes a guide portion 13, which has a groove 14 and a sliding groove 15. The side wall of the lock cylinder 5 has a notch 16, and the sliding groove 15 slopes from the groove 14 to the notch 16. The expansion portion 4 is also provided with two opposing bosses 17, which are arc-shaped and elastic. The structure of the nut 1 is the same as in the previous embodiments and will not be described again here.

[0066] In the above embodiments, the outer surfaces of both the expansion portion 4 and the guide portion 13 are provided with reverse teeth 18. This structure and its advantages are the same as in the previous embodiments, and will not be repeated here.

[0067] In the above embodiment, the slide groove 15 is further provided with a through hole 19 extending through its upper and lower surfaces, and a magnetic block 20 is disposed in the through hole 19. This structure and its advantages are the same as in the previous embodiments, and will not be repeated here.

[0068] As an optional implementation, in some embodiments, a second limiting groove 26 is provided on the upper part of the expansion sleeve 25. The second limiting groove 26 is opened along the height direction of the expansion sleeve 25, and a second limiting block 27 is provided on the rod expansion member 24. The second limiting block 27 is adapted to the second limiting groove 26. The structure and its advantages are the same as those in the previous embodiments, and will not be repeated here.

[0069] Instructions for using this quick-connect connector: See again Figure 1 and Figure 9Depending on the actual installation material, if expansion fixing is required, first insert the expansion plug 2 into the lower part of the expansion section 4, with the first internal thread 7 of the expansion plug 2 contacting the external thread 6 of the lock cylinder 5. Then, install the nut 1 in the mounting hole of the material. Finally, use a tool to rotate the lock cylinder 5 so that the expansion plug 2 is forced to move in the direction of the lock cylinder 5 (the interaction force between the external thread 6 and the first internal thread 7 will drive the expansion plug 2 to move), thereby expanding the expansion section 4 outward, and thus securing the nut 1 in the mounting hole of the material. If expansion fixing is not required (e.g., when sharing a single vertical plate), the mounting holes of the material are generally through-holes. In this case, first install one nut 1 into the mounting hole from one side of the material, then tighten the locking cylinder 5 of the nut 1 with the connecting plug 3. Finally, install another nut 1 into the mounting hole from the other side of the material, aligning the locking cylinder 5 of this nut 1 with the connecting plug 3, and tighten both with threads to securely install it in the mounting hole of the material. In addition, the locking rod is installed in the mounting hole of another plate. By using a tool to rotate the rod head 23, the rod body is rotated, causing the rod expansion member 24 to move towards the expansion sleeve 25, thereby expanding the expansion sleeve 25 outward, achieving the effect of fastening the locking rod 21 in the mounting hole of the plate. Finally, simply inserting the rod head 23 of the locking rod 21 into the corresponding locking cylinder 5 of the nut 1 completes the installation of the plate. Therefore, this quick-install connector has high adaptability.

[0070] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0071] The above embodiments are merely illustrative of the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made based on the substance of the content of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A multifunctional quick-connect fitting, characterized in that, include: A nut having an expansion portion, the expansion portion being hollow and having a through-hole between its upper and lower surfaces, the expansion portion being elastic, and a lock core being provided inside the expansion portion, the lower part of the lock core having an external thread; An expansion plug having a hollow interior and a first internal thread that is adapted to the external thread; A locking rod includes a rod body, one end of which is connected to a rod head via a connecting rod. The rod head is adapted to the lock cylinder. The other end of the rod body is threadedly connected to a rod expansion member. An expansion sleeve is fitted over the rod body. The expansion sleeve is elastic and positioned below the rod expansion member. Specifically, the expansion plug is driven to insert into the expansion part and move towards the lock cylinder, thereby expanding the expansion part outward; the rod body is rotated so that the rod expansion member moves towards the expansion sleeve, thereby expanding the expansion sleeve outward.

2. The multifunctional quick-connect fitting according to claim 1, characterized in that, The lower part of the expansion section is provided with a first limiting groove, which is opened along the height direction of the expansion section. The expansion plug is provided with a first limiting block, which is adapted to the first limiting groove.

3. The multifunctional quick-connect fitting according to claim 1, characterized in that, The expansion section has a first inclined surface, which is downward and inclined in a direction away from the central axis of the expansion section. The expansion plug has a second inclined surface, which is upward and inclined in a direction close to the central axis of the expansion plug. The first inclined surface and the second inclined surface are adapted to each other.

4. The multifunctional quick-connect fitting according to claim 1, characterized in that, The nut also has a guide portion, which has a groove and a slide. The side wall of the lock cylinder has a notch. The slide slopes from the groove to the notch. The expansion portion is also provided with two opposite bosses, which are arc-shaped and elastic.

5. The multifunctional quick-connect fitting according to claim 4, characterized in that, Both the expansion part and the guide part have reverse teeth on their outer surfaces, and the slide groove has a through hole that penetrates its upper and lower surfaces. A magnetic block is installed in the through hole.

6. The multifunctional quick-connect fitting according to claim 1, characterized in that, The upper part of the expansion sleeve is provided with a second limiting groove, which is opened along the height direction of the expansion sleeve. The rod expansion member is provided with a second limiting block, which is adapted to the second limiting groove.

7. A multifunctional quick-connect fitting, characterized in that, include: Two nuts, each nut having an expansion portion, the expansion portion being hollow and having a through surface on the upper and lower surfaces, a lock cylinder being provided inside the expansion portion, the lower part of the lock cylinder having an external thread; A connecting plug, which is hollow inside and has a second internal thread that is adapted to the external thread; Two locking rods, each of the locking rods includes a rod body, one end of the rod body is connected to a rod head via a connecting rod, the rod head is adapted to the lock cylinder, the other end of the rod body is threaded to a rod expansion member, and the rod body is covered with an expansion sleeve, the expansion sleeve is elastic and located below the rod expansion member; The two nuts are mirror images of each other and are spliced ​​together by the connecting plug; the rod is rotated so that the rod expansion member moves toward the expansion sleeve, thereby expanding the expansion sleeve outward.

8. The multifunctional quick-connect fitting according to claim 7, characterized in that, The nut also has a guide portion, which has a groove and a slide. The side wall of the lock cylinder has a notch. The slide slopes from the groove to the notch. The expansion portion is also provided with two opposite bosses, which are arc-shaped and elastic.

9. The multifunctional quick-connect fitting according to claim 8, characterized in that, Both the expansion part and the guide part have inverted teeth on their outer surfaces, and the slide groove has a through hole that penetrates its upper and lower surfaces, with a magnetic block placed inside the through hole.

10. The multifunctional quick-connect fitting according to claim 7, characterized in that, The upper part of the expansion sleeve is provided with a second limiting groove, which is opened along the height direction of the expansion sleeve. The rod expansion member is provided with a second limiting block, which is adapted to the second limiting groove.

Images