Powerful elastic buckle connecting piece

Abstract

The invention provides a powerful elastic buckle connecting piece, and relates to the technical field of furniture hardware, the powerful elastic buckle connecting piece comprises a first connecting piece and a second connecting piece, the first connecting piece is used for being pre-buried in a first plate, the first connecting piece comprises a rod body, a rod expansion insertion piece and an expansion sleeve, and the upper end of the rod body is rotationally connected with the rod expansion insertion piece through a first connecting rod; the expansion sleeve is elastic and sleeves the first connecting rod and part of the rod expansion insert, the second connecting piece is used for being pre-buried in a second plate and comprises an expansion part and a guide part, a lock cylinder is arranged in the expansion part, the upper surface and the lower surface of the lock cylinder are through, a notch is formed in the side wall of the lock cylinder, and the lower portion of the expansion part is elastic. The guide part is provided with a notch and a sliding groove, the notch is matched with the lower end of the rod body, and the sliding groove inclines from the notch to the notch. Rapid and convenient installation can be achieved, and meanwhile high stability is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of furniture hardware, in particular to a hidden strong snap buckle connector. Background Art

[0002] Connectors are a type of fastening mechanism used in furniture. They are fastened to the pre-processed furniture base material to form the finished product. Commercially available furniture typically uses "three-in-one" or "four-in-one" connectors to connect panels. However, these methods leave visible holes (eccentrics) in the furniture, making the connectors partially or completely visible after assembly. This reduces the overall aesthetics and durability of the furniture, and reduces its design flexibility.

[0003] Furniture production and sales are gradually moving towards a sales-first, factory-backed model, where panels are processed at the back-end factory and then transported to the terminal via logistics for assembly. Under this model, cost-effectiveness and convenience are crucial factors to consider both during the furniture production process and during installation upon delivery. Currently, furniture on the market uses "three-in-one connectors" for panel connection, which cannot be pre-buried in the factory and must be screwed and tightened on-site. Hardware can easily become lost, missing, incorrectly installed, or damaged. Since the installation site is often far from the factory, problems like these can result in very high after-sales costs. Furthermore, the cumbersome on-site installation significantly increases labor costs and can easily lead to a poor delivery experience for the terminal.

[0004] Post-production furniture transportation is a crucial component of delivery services. Using pre-assembled "three-in-one connectors" prevents flat-packing of panels, increasing transportation costs and the likelihood of panel damage. This impacts the delivery system of furniture factories and hinders production efficiency.

[0005] With the rise in popularity of internet shopping and the proliferation of efficient furniture sales models like IKEA, easy packaging, tool-free installation, and standardized installation methods are becoming increasingly important. Traditional three-in-one connectors are more complex to install, requiring more tools and steps, and present significant limitations when used in this sales model. Industry trends are driving the need for fast-assembly connectors that are convenient, robust, and tool-free.

[0006] The current trend of furniture customization is sweeping the industry. Customizing and producing non-standard sizes and products presents furniture manufacturers with greater processing challenges. The use of traditional "three-in-one connectors" to assemble cabinets requires high precision in hole placement and panel dimensions. These inaccuracies can easily lead to uneven panels after the cabinet is assembled.

[0007] After furniture products are delivered to end-users, they often face special circumstances such as after-sales service returns. Furniture that uses "three-in-one connectors" to connect panels requires disassembly of the entire cabinet. In residential environments, cumbersome after-sales service can easily lead to customer dissatisfaction. Therefore, the need for connectors that allow for the removal of individual panels has become increasingly important.

[0008] Furthermore, after furniture or cabinets are assembled and delivered using "three-in-one connectors," the internal cam lock components often become loose after extended use, even falling out of the pre-set holes in the panels. This can cause the cabinet structure to become loose and wobbly. Such issues require frequent tightening of the cam locks, making furniture maintenance cumbersome and burdensome.

[0009] Currently, in the application of existing spring-type latch connectors, most connectors rely solely on compressible rod heads with a rebound function. First, the accessories need to be pre-knocked into the board, and then the shelf with the spring latch is usually brought into contact with the connecting mother part on the side panel, and then the other side of the shelf is pressed in. At this time, the spring rod head is in a compressed state until the rod head moves to the embedded part slot, at which time the rod head rebounds and resets. However, in the field of high-end furniture on the existing market, cabinets are often treated with baking paint, high-gloss technology, high-grade veneer and other processes for board surface treatment. Such board surfaces are expensive and fragile. During the compression of the spring rod head, under the relative force, the cabinet board surface will be subjected to pressure and friction from the spring rod head, and it is very easy to be scratched or abraded. Summary of the Invention

[0010] In order to solve the problems of troublesome installation and insufficient stability in the prior art, the present invention provides a strong snap-on connector that can achieve quick and convenient installation and has high stability.

[0011] To achieve the above object, the present invention provides the following technical solutions:

[0012] A strong snap-button connector, comprising:

[0013] a first connecting member, which is used to be pre-embedded in the first plate, the first connecting member comprising a rod body, a rod expansion plug and an expansion sleeve, the upper end of the rod body being rotatably connected to the rod expansion plug via a first connecting rod, the expansion sleeve being elastic and being sleeved over the first connecting rod and a portion of the rod expansion plug;

[0014] The second connecting member is used to be pre-embedded in the second plate member. The second connecting member includes an expansion portion and a guide portion. A lock core is provided in the expansion portion. The upper and lower surfaces of the lock core are through-connected and a notch is provided on its side wall. The lower part of the expansion portion is elastic. The guide portion has a notch and a slide groove. The notch is adapted to the lower end of the rod body, and the slide groove is inclined from the notch to the notch.

[0015] The strong snap connector as described above, further, the shape of the rod expansion plug-in is large at the top and small at the bottom, the outer surface of the rod expansion plug-in has an inclined portion, the expansion sleeve is arranged at the lower part of the rod expansion plug-in, and a first slope is provided in the expansion sleeve, the first slope is inclined downward and toward the central axis of the expansion sleeve, the first slope is adapted to the inclined portion, the rod expansion plug-in is provided with a first threaded hole passing through its upper and lower surfaces, the outer surface of the first connecting rod is provided with a first thread, the first thread is threadedly engaged with the first threaded hole, the lower end of the first connecting rod has a protrusion protruding outward, the protrusion abuts with the lower end of the expansion sleeve, the first connecting rod is provided with a first through hole passing through its upper and lower surfaces, the first through hole has a limiting step protruding inward, the upper end of the rod body has a limiting head, the limiting head can abut against the limiting step, the outer surface of the rod expansion plug-in is provided with a limiting block, the expansion sleeve is provided with a limiting groove, the limiting groove is adapted to the limiting block.

[0016] As described above, the strong snap-on connector, further, the outer surface of the lock core is provided with a second thread, the expansion part has a second threaded hole, the second thread is adapted to the second threaded hole, the lower part of the second threaded hole is provided with a second slope, the second slope is inclined downward and toward the central axis of the expansion part.

[0017] The strong spring-loaded connector as described above, further, the rod body includes an upper rod body and a lower rod body that are detachably connected, the upper end of the upper rod body has the limit head, the lower end of the upper rod body has a third thread, the upper end of the lower rod body is provided with a third threaded hole, the third threaded hole is adapted to the third thread, the lower end of the lower rod body is connected to a rod head through a second connecting rod, the diameter of the second connecting rod gradually decreases from the lower rod body to the rod head, the rod head is elliptical, a cross groove is provided on the rod head, two bosses are provided on the upper surface of the expansion part, the two bosses are arc-shaped and elastic, the two bosses are horizontally facing the notch, a traction slope is provided below the boss, and the spacing between the two bosses is smaller than the diameter of the second connecting rod.

[0018] The strong spring-loaded connector as described above further includes a first spring, and the upper end of the lower rod body is also provided with six grooves, the third threaded hole is provided in the six-sided grooves, and a six-sided clamping block is provided in the six-sided grooves, and the six-sided clamping block is provided with a second through hole running through the upper and lower surfaces thereof, the second through hole is adapted to the upper rod body, the first spring is sleeved outside the upper rod body, and the two ends of the first spring are respectively in contact with the lower surface of the first connecting rod and the upper surface of the six-sided clamping block.

[0019] The strong spring-loaded connector as described above further includes a second spring, the rod head is made of metal, the upper end of the lower rod body is also provided with six grooves, the six-sided grooves are provided with the third threaded hole, the six-sided grooves are provided with a six-sided clamping block, the six-sided clamping block is provided with a second through hole running through its upper and lower surfaces, the second through hole is adapted to the upper rod body, the second spring is sleeved outside the upper rod body, and the two ends of the second spring are respectively abutted against the lower surface of the first connecting rod and the upper surface of the six-sided clamping block, a magnetic block is provided on the bottom surface of the slide groove, and the magnetic block can attract the rod head.

[0020] As described above, the strong snap-on connector, further, the first connector also includes a hollow shell, the upper end of the shell is provided with a fourth threaded hole, the lower part of the expansion sleeve has a fourth thread, the fourth thread is adapted to the fourth threaded hole, the diameter of the lower end opening of the shell is smaller than the diameter of the lower rod body, the lower surface of the shell is provided with a first straight slot, the outer surface of the shell is provided with a rod self-tapping tooth, the upper end of the shell is provided with a first back-off tooth, the lower end of the expansion sleeve is provided with a second back-off tooth, the first back-off tooth is adapted to the second back-off tooth.

[0021] As described above, the strong snap-on connector, further, the outer surface of the expansion sleeve is provided with multi-layer toothed anti-retreat teeth, and a bending notch is opened in the middle of the multi-layer toothed anti-retreat teeth, the outer surface of the expansion part is provided with a first tooth, and the outer surface of the guide part is provided with a second tooth.

[0022] The strong snap-button connector as described above, further, the lock core is threadedly connected to the expansion portion, and a second straight-groove is formed on the upper surface of the lock core.

[0023] The strong snap-on connector as described above, further, the upper surface of the guide portion is flush with the upper surface of the expansion portion, the depth of the guide portion is smaller than the depth of the expansion portion, and the diameter of the guide portion is smaller than the diameter of the expansion portion.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The present invention expands and fixes the first and second connecting members in the two plates to be installed, and then the lower end of the rod is inserted into the slot and slid to complete the installation, which is convenient and stable.

[0026] 2. The present invention uses a shorter second spring, so that the rod head can be completely retracted into the housing without elastic force. When the rod head is placed in the internal slide groove of the second connecting member, the magnetic block on the slide groove will pull the rod head out through magnetic force, thus avoiding the problem of scratches on the high-end cabinet panel;

[0027] 3. After the first and second connectors of the present invention are installed on the two panels, the connector hardware is completely invisible, which improves the overall aesthetics. At the same time, it has the characteristics of lightweight processing, high installation efficiency, and can be repeatedly disassembled and reassembled;

[0028] 4. The anti-retraction indentations on the outer surface of the expansion sleeve and the indentations on the outer surfaces of the expansion portion and the guide portion of the present invention further increase the friction between the expansion sleeve and the inner wall of the panel substrate, thereby significantly improving the connection stability between the expansion sleeve and the panel. After installation, the accessories are difficult to fall out, thus achieving stable installation of the two panels and making the furniture assembly more secure.

[0029] 5. The first connecting member and the second connecting member of the present invention are respectively triggered to expand in the panels to be installed, giving the panels stronger friction and nail holding force. At the same time, their strong stability has the effect of tightening and correcting the panels when the dimensional error or deformation of the panels is large. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 Schematic diagram of the structure of a strong snap-button connector in an embodiment of the present invention;

[0032] Figure 2 This is a front view of the first connecting member (including the first spring) in an embodiment of the present invention;

[0033] Figure 3 for Figure 2 Cross-section at AA;

[0034] Figure 4 is a bottom view of the first connecting member in an embodiment of the present invention;

[0035] Figure 5 1 is an exploded view of the structure of the first connecting member (including the first spring) in an embodiment of the present invention;

[0036] Figure 6 2 is a top view of the second connecting member (with a built-in lock cylinder) in an embodiment of the present invention;

[0037] Figure 7 for Figure 6 Cross-section at BB;

[0038] Figure 8 2 is a top view of the second connecting member (without a built-in lock core) in an embodiment of the present invention;

[0039] Figure 9 for Figure 8 Cross-section at CC;

[0040] Figure 10 This is an exploded view of the structure of the second connecting member (the slide groove has no built-in magnetic block) in an embodiment of the present invention;

[0041] Figure 11 This is a front view of the first connecting member (containing the second spring) in an embodiment of the present invention;

[0042] Figure 12 for Figure 11 Cross-section at DD;

[0043] Figure 13 1 is an exploded view of the structure of the first connecting member (including the second spring) in an embodiment of the present invention;

[0044] Figure 14 A top view of the second connecting member (with a built-in lock cylinder and a built-in magnetic block in the slide groove) in an embodiment of the present invention;

[0045] Figure 15 for Figure 14 Cross-section at EE;

[0046] Figure 16 A top view of the second connecting member (without a built-in lock cylinder and with a built-in magnetic block in the slide groove) in an embodiment of the present invention;

[0047] Figure 17 for Figure 16 Cross-section at FF;

[0048] Figure 18 This is an exploded view of the structure of the second connecting member (with a magnetic block built into the slide groove) in an embodiment of the present invention;

[0049] Figures 19 to 20 Schematic diagram of the expansion of the first connecting member (including the first spring) in an embodiment of the present invention;

[0050] Figure 21 for Figure 19 sectional view of

[0051] Figure 22 for Figure 20 sectional view of

[0052] Figures 23 to 24 Schematic diagram of the expansion of the second connecting member (the chute has no built-in magnetic block) in an embodiment of the present invention;

[0053] Figure 25 for Figure 23 sectional view of

[0054] Figure 26 for Figure 24 sectional view of

[0055] Figures 27 to 29 Schematic diagram of the installation of the first connecting member and the second connecting member (spring pop-up) in an embodiment of the present invention;

[0056] Figure 30 for Figure 27 sectional view of

[0057] Figure 31 for Figure 28 sectional view of

[0058] Figure 32 for Figure 29 sectional view of

[0059] Figures 33 to 34 Schematic diagram of the expansion of the first connecting member (containing the second spring) in an embodiment of the present invention;

[0060] Figure 35 for Figure 33 sectional view of

[0061] Figure 36 for Figure 34 sectional view of

[0062] Figures 37 and 38 Schematic diagram of the expansion of the second connecting member (magnetic block built into the chute) in an embodiment of the present invention;

[0063] Figure 39 for Figure 37 sectional view of

[0064] Figure 40 for Figure 38 sectional view of

[0065] Figures 41 to 44 Schematic diagram of the installation of the first connecting member and the second connecting member (magnetic block adsorption) in an embodiment of the present invention;

[0066] Figure 45 for Figure 41 sectional view of

[0067] Figure 46 for Figure 42 sectional view of

[0068] Figure 47 for Figure 43 sectional view of

[0069] Figure 48 for Figure 44 sectional view of

[0070] Figures 49 to 51Schematic diagram of the installation of the first plate and the second plate (spring pop-up) in an embodiment of the present invention;

[0071] Figures 52 to 54 Schematic diagram of the installation of the first plate and the second plate (magnetic block adsorption) in an embodiment of the present invention;

[0072] In the figure: 1, first connecting member; 2, second connecting member; 3, rod expansion plug; 4, expansion sleeve; 5, expansion part; 6, guide part; 7, first connecting rod; 8, lock core; 9, notch; 10, notch; 11, slide groove; 12, first threaded hole; 13, first thread; 14, first through hole; 15, limit step; 16, limit head; 17, inclined part; 18, first slope; 19, limit block; 20, limit groove; 21, second thread; 22, second threaded hole; 23, first spring; 24, second slope; 25, upper rod; 26, lower rod; 27, third thread; 28, first through hole Three threaded holes; 29, second connecting rod; 30, rod head; 31, cross groove; 32, boss; 33, second spring; 34, six-sided groove; 35, six-sided clamping block; 36, second through hole; 37, shell; 38, first anti-retraction tooth; 39, second anti-retraction tooth; 40, rod self-tapping tooth; 41, first inverted tooth; 42, second inverted tooth; 43, magnetic block; 44, bending notch; 45, traction slope; 46, first straight slot; 47, second straight slot; 48, anti-retraction inverted tooth; 49, fourth thread; 50, fourth threaded hole; 51, first plate; 52, second plate; 53, boss. DETAILED DESCRIPTION

[0073] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0074] Example:

[0075] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof in the embodiments of the present invention are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0076] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0077] In the description of the present invention, "plurality" means at least two, such as two or three, unless otherwise specifically defined. Furthermore, unless otherwise specified or defined, the terms "mounted," "connected," and "connected" should be understood broadly, meaning, for example, fixed, removable, or integral; mechanical or electrical; direct or indirect through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention.

[0078] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0079] The present invention provides a technical solution: a strong spring-loaded connector, which includes a first connector 1 and a second connector 2. The first connector 1 is used to be pre-embedded in the first plate 51. The first connector 1 includes a rod body, a rod expansion plug-in 3 and an expansion sleeve 4. The upper end of the rod body is rotatably connected to the rod expansion plug-in 3 through a first connecting rod 7. The expansion sleeve 4 is elastic and is sleeved outside the first connecting rod 3 and part of the rod expansion plug-in 3. The second connector 2 is used to be pre-embedded in the second plate 52. The second connector 2 includes an expansion part 5 and a guide part 6. A lock core 8 is provided in the expansion part 5. The upper and lower surfaces of the lock core 8 are through-connected and its side wall has a notch 9. The lower part of the expansion part 5 is elastic. The guide part 6 has a notch 10 and a slide groove 11. The notch 10 is adapted to the lower end of the rod body, and the slide groove 11 is inclined from the notch 10 to the notch 9.

[0080] Specifically, see Figure 1 as well as Figures 20 to 30 The first connector 1 and the second connector 2 are respectively installed in the two plates that need to be spliced ​​(the first plate 51 and the second plate 52). When the two plates are spliced, they are first expanded in their respective plates and then clamped and fixed. The expansion of the first connector 1 is achieved by rotating the rod body to rotate the first connecting rod 7, thereby driving the rod expansion plug 3 to move in the direction of the expansion sleeve 4, and then causing the expansion sleeve 4 to expand. The expansion of the second connector 2 is achieved by moving the lock core 8 toward the lower part of the expansion part 5, thereby expanding the lower part of the expansion part 5. After the first connector 1 and the second connector 2 have completed expansion, the lower end of the rod body is inserted into the notch 10, so that it slides along the slide groove 11 to the notch 9 and enters the lock core 8 to be clamped and fixed. Therefore, this strong snap connector only needs to be expanded in the installed plate in advance, and then the first connector 1 and the second connector 2 can be clamped, which is quite convenient. At the same time, the two plates have high stability after installation.

[0081] As an optional embodiment, in some embodiments, the first connecting member 1 also includes a hollow shell 37, the upper end of the shell 37 is provided with a fourth threaded hole 50, the lower part of the expansion sleeve 4 has a fourth thread 49, the fourth thread 49 is adapted to the fourth threaded hole 50, the diameter of the lower end opening of the shell 37 is smaller than the diameter of the lower rod body 26, the lower surface of the shell 37 is provided with a first straight groove 46, the outer surface of the shell 37 is provided with a rod self-tapping tooth 40, the upper end of the shell 37 is provided with a first back-off tooth 38, the lower end of the expansion sleeve 4 is provided with a second back-off tooth 39, the first back-off tooth 38 is adapted to the second back-off tooth 39.

[0082] Specifically, see again Figures 2 to 4The first and second anti-backlash teeth 38 and 39 have the same tooth shape (both are triangular teeth) and the same number of teeth. When the shell 37 and the expansion sleeve 4 are screwed together, the engagement between the first and second anti-backlash teeth 38 and 39 can effectively prevent the two from rotating relative to each other, making it impossible for the two to be loosened and retracted. At the same time, the threaded connection is also locked to the terminal end, forming a tightly connected state in which the two cannot move forward or backward relative to each other. Similarly, during the installation of the first connector 1, a matching flat-blade screwdriver is used to screw the first connector mating rod self-tapping 40 into the preset mounting hole of the first plate 49 through the first flat-blade notch 46 on the lower surface of the shell 37. The anti-backlash effect played by the first and second anti-backlash teeth 38 and 39 prevents the expansion sleeve 4 from rotating with the shell 37 in the preset mounting hole, resulting in the occurrence of falling off.

[0083] In the above embodiment, the outer surface of the expansion sleeve 4 is further provided with multi-layer toothed anti-retraction inverted teeth 48, and a bending notch 44 is provided in the middle of the multi-layer toothed anti-retraction inverted teeth 48, the outer surface of the expansion portion 5 is provided with a first inverted tooth 41, and the outer surface of the guide portion 6 is provided with a second inverted tooth 42. Figure 3 and Figure 7 The backstop teeth 48 can cooperate with the expansion sleeve 4 to form a more stable expansion self-locking structure within the first plate 51. Similarly, the first and second back teeth 41 and 42 can form a more stable expansion self-locking structure between the expansion portion 5 and the guide portion 6 within the second plate 52. In addition, the bending notch 44 reserves a releasable space for the annular expansion of the upper half.

[0084] As an optional embodiment, in some embodiments, the shape of the rod expansion plug 3 is large at the top and small at the bottom, the outer surface of the rod expansion plug 3 has an inclined portion 17, the expansion sleeve 4 is sleeved on the lower part of the rod expansion plug 3, and a first slope 18 is provided in the expansion sleeve 4. The first slope 18 is inclined downward and toward the central axis of the expansion sleeve 4. The first slope 18 is adapted to the inclined portion 17. The rod expansion plug 3 is provided with a first threaded hole 12 running through the upper and lower surfaces thereof, and the outer surface of the first connecting rod 7 is provided with a first thread 13. The first thread 13 is threadedly engaged with the first threaded hole 12, the lower end of the first connecting rod 7 has a protrusion 53 protruding outward, the protrusion 53 abuts the lower end of the expansion sleeve 4, the first connecting rod 7 is provided with a first through hole 14 running through the upper and lower surfaces thereof, the first through hole 14 has a limiting step 15 protruding inward, the upper end of the rod body has a limiting head 16, the limiting head 16 can abut against the limiting step 15, the outer surface of the rod expansion plug-in 3 is provided with a limiting block 19, the expansion sleeve 4 is provided with a limiting groove 20, the limiting groove 20 is adapted to the limiting block 19.

[0085] Specifically, see Figure 2 and Figure 5Because the rod body has a hexagonal outer profile, the first through-hole 14 within the first connecting rod 7 also has a matching hexagonal profile. Therefore, when the rod body rotates, it drives the first connecting rod 7 to rotate. Since the lower end of the first connecting rod 7 has a protrusion 53 with a larger diameter than the main body of the first connecting rod 7, the protrusion 53 abuts against the lower end of the expansion sleeve 4, providing support and positioning. Therefore, there is no room for the first connecting rod 7 to fall downward. At this time, the first thread 13 on the outer surface of the first connecting rod 7 engages with the first threaded hole 12 of the rod expansion plug 3. The interaction between the threads drives the rod expansion plug 3 downward, thereby expanding the expansion sleeve 4. Furthermore, the first slope 18 and the inclined portion 17 have the same inclination. Since the rod expansion plug 3 is larger at the top and smaller at the bottom, the expansion sleeve 4 is elastic. When the rod expansion plug 3 moves downward, the expansion sleeve 4 is expanded by the interaction between the inclined portion 17 of the rod expansion plug 3 and the first slope 18 of the expansion sleeve 4. The stop block 19 and stop slot 20 work together to connect the rod expansion insert 3 and expansion sleeve 4 as a single unit. Because the top of the expansion sleeve 4 is screwed onto the first thread 13 and first retaining tooth 38 of the housing, the expansion sleeve 4, and consequently the rod expansion insert 3, cannot rotate. When the rod rotates, driving the first connecting rod 7, the rod expansion insert 3 is pulled by the threaded extension, driving the rod expansion insert 3 into the expansion sleeve 4, causing it to expand. This overall structural design is simple and ingenious.

[0086] As an optional embodiment, in some embodiments, the outer surface of the lock core 8 is provided with a second thread 21, the expansion portion 5 is provided with a second threaded hole 22, the upper portion of the second threaded hole 22 is provided with an internal thread 23, the second thread 21 is adapted to the internal thread 23, and the lower portion of the second threaded hole 22 is provided with a second slope 24, the second slope 24 is inclined downward and toward the central axis of the expansion portion 5. Figures 6 to 9 Since the lower part of the expansion portion 5 is elastic and the lower part of the second threaded hole 22 has a second slope 24, when the lock core 8 is threadedly connected to the second threaded hole 22, the lock core 8 moves downward to the second slope 24, and the inwardly inclined second slope 24 is stretched outward, thereby achieving expansion of the lower part of the expansion portion 5.

[0087] As an optional embodiment, in some embodiments, the rod body includes an upper rod body 25 and a lower rod body 26 that are detachably connected, the upper end of the upper rod body 25 has a limit head 16, the lower end of the upper rod body 25 has a third thread 27, the upper end of the lower rod body 26 is provided with a third threaded hole 28, the third threaded hole 28 is adapted to the third thread 26, the lower end of the lower rod body 26 is connected to a rod head 30 through a second connecting rod 29, the diameter of the second connecting rod 29 gradually decreases from the lower rod body 26 to the rod head 30, the rod head 30 is elliptical, and a cross groove 31 is provided on the rod head 30, the upper surface of the expansion part 5 is provided with two bosses 32, the two bosses 32 are arc-shaped and elastic, the two bosses 32 are horizontally facing the notch 10, a traction slope 45 is provided below the boss 32, and the distance between the two bosses 32 is smaller than the diameter of the second connecting rod 29.

[0088] Specifically, see again Figures 2 to 10The rod body is detachable and specifically comprises an upper rod body 25 and a lower rod body 26. The middle portion of the upper rod body 25 is hexagonal prism-shaped. The lower end opening of the first through hole 14 of the first connecting rod 7, which is connected to the upper rod body 25, is also hexagonal. This ensures a large contact area and good fit between the two. When the rod body rotates, the two components rotate as a whole, thereby improving transmission efficiency. The upper rod body 25 and the lower rod body 26 are fixed by a threaded connection, which is simple and stable. The rod head 30 is elliptical and has a certain thickness. The lower rod body 26 fits tightly against the inner wall of the housing 37, leaving little gap. On the one hand, this makes the contact surface with the chute 11 unevenly distributed in different directions. During the sliding process, the contact pattern between the major and minor axes of the ellipse and the chute wall makes the guiding effect of the chute 11 more efficient, thereby making the sliding process more stable. On the other hand, the first connecting member 1 is stable and does not shake after being locked inside the second connecting member 2, that is, the shelves of the cabinet are more stable after installation and will not shake. At the same time, the contact area between the elliptical rod head 30 and the slide groove 11 is relatively large. When bearing load, the stress can be more evenly distributed on the contact surface, thereby reducing the risk of local stress concentration. In addition, the diameter of the second connecting rod 29 gradually decreases from the lower rod body 26 to the rod head 30, which can limit the length of the connecting rod 29 that can be pulled out. There is a cross groove 31 on the rod head 30, which has four notches and can be tightened with a screwdriver. In addition, the distance between the two bosses 32 is slightly smaller than the diameter of the second connecting rod 29. Since the two bosses 24 are elastic, when the second connecting rod 29 slides between the two bosses 32, the two bosses 32 are elastically deformed due to the presence of external force, allowing the second connecting rod 29 to pass through. On the other hand, after the second connecting rod 29 passes the two rear bosses 32, the two bosses 32 return to their original position, forming a narrow channel behind the second connecting rod 29. Without a certain degree of external force, the second connecting rod 29 cannot return on its own, preventing children from accidentally removing the panel and enhancing the stability of the installation. Furthermore, after the second connecting rod 29 passes the two rear bosses 32, the traction slopes 45 on both sides of the chute act as a guide, allowing the rod head 30 to smoothly reach the lock cylinder 8.

[0089] As an optional embodiment, in some embodiments, a first spring 23 is further included, and a six-sided groove 34 is provided at the upper end of the lower rod body 26, a third threaded hole 28 is provided in the six-sided groove 34, and a six-sided clamping block 35 is provided in the six-sided groove 34. The six-sided clamping block 35 has a third through hole 36 running through its upper and lower surfaces, and the third through hole 36 is adapted to the upper rod body 25. The first spring 23 is sleeved on the outside of the upper rod body 25, and the two ends of the first spring 23 are respectively in contact with the lower surface of the first connecting rod 7 and the upper surface of the six-sided clamping block 35.

[0090] Specifically, see again Figures 11 to 18 The hexagonal block 35 is shaped like a hexagonal prism, while the third through-hole 36 is circular. Since the lower end of the upper rod 25 is cylindrical and the second threaded hole 28 of the lower rod is also circular, the two are screwed together to form a hexagonal groove 34 above the lower rod 26. Its dimensions match those of the hexagonal block 35. After the upper and lower rods 25 and 26 are screwed together, the hexagonal block 35 falls into the hexagonal groove 34. Therefore, in applications where the rods rotate, the hexagonal block 35 enables the lower rod 26 to drive the upper rod 25 with it. It also simultaneously limits the relative position of the upper and lower rods 25 and 26 in both forward and reverse directions, ensuring that the threaded connection between the lower and upper rods 26 and 25 does not loosen in all possible applications. When the plate is installed, the first spring 23 is elastically deformed by the other plate, causing the rod head 30 to retract into the housing 37. When the rod head 30 falls into the notch 10 of the second connecting member 2 , the external force disappears, and the elastic force of the first spring 23 causes the upper rod body 25 to move upward and reset, and the rod head 30 extends.

[0091] Therefore, in this embodiment, the length of the second spring 33 is shortened so that the rod head 30 can be completely retracted into the shell 37 without elastic force. When the rod head 30 is placed on the internal slide groove 11 of the second connecting member 2, the magnetic block 43 on the slide groove 11 will be pulled by magnetic force to extend the rod head 30. This solution avoids the problem of scratches on the high-end cabinet panel.

[0092] As an optional embodiment, in some embodiments, a second spring 33 is further included, the rod head 30 is made of metal, a six-sided groove 34 is further provided at the upper end of the lower rod body 26, a third threaded hole 28 is provided in the six-sided groove 34, a six-sided clamping block 35 is provided in the six-sided groove 34, and the six-sided clamping block 35 is provided with a third through hole 36 running through its upper and lower surfaces, and the third through hole 36 is adapted to the upper rod body 25. The first spring 23 is sleeved on the outside of the upper rod body 25, and the two ends of the first spring 23 are respectively in contact with the lower surface of the first connecting rod 7 and the upper surface of the six-sided clamping block 35. A magnetic block 43 is provided on the bottom surface of the slide groove 11, and the magnetic block 43 can attract the rod head 30. Among them, see Figure 11 The difference from the above embodiment is that the length of the second spring 33 is shorter than the first spring 23, so that when the second spring 33 is in a fully released state, the rod head 30 can be completely retracted into the housing 37. The second spring 33 only serves as a supporting component. At the same time, a magnetic block 43 is provided on the bottom surface of the slide 11. Since the rod head 30 is made of metal, the rod head 30 can be fully retracted into the housing 37 during the installation of the panel, avoiding scratches and damage to the panel surface due to relative external forces. When the rod head 30 slides to a certain point on the surface of the slide 11 (above the magnetic block 43), it will be attracted out by the magnetic block 43. This embodiment replaces the spring pop-up design of the above embodiment with a magnetic design, making the overall design more ingenious and more convenient to use.

[0093] As an optional embodiment, in some embodiments, the lock core 8 is threadedly connected to the expansion portion 5, and a second straight groove 47 is opened on the upper surface of the lock core 8. Figure 10 The lock core 8 is fixed to the expansion part 5 by a threaded connection. The lock core 8 can be screwed into the expansion part 5 by using a matching flat-blade screwdriver corresponding to the second flat-blade notch 47. When the lock core 8 is tightened into place, the notch 9 of the lock core 8 is facing the two bosses 24 and the traction slope 45.

[0094] As an optional embodiment, in some embodiments, the upper surface of the guide portion 6 is flush with the upper surface of the expansion portion 5, the depth of the guide portion 6 is less than the depth of the expansion portion 5, and the diameter of the guide portion 6 is less than the diameter of the expansion portion 5. Figure 6 and Figure 11 Because the depth of the guide portion 6 is smaller than that of the expansion portion 5, the lower portion of the expansion portion 5 can expand outward without obstruction, improving stability. Furthermore, the diameter of the guide portion 6 is smaller than that of the expansion portion 5, preventing on-site installers from knocking the fitting in the wrong direction. Furthermore, the larger diameter of the expansion portion 5 and the larger area of ​​the backstop teeth provide greater expansion locking force and friction.

[0095] A method of installing and using this powerful snap fastener: see Figures 19 to 29 as well as Figures 49 to 51 First, preset mounting holes in the two plates to be installed, and then install the first connecting member and the second connecting member on the corresponding mounting holes respectively, and then expand the first connecting member and the second connecting member respectively (first connecting member: use a bolt driver to align with the cross slot on the rod head and rotate it, and the first connecting rod is rotated through the upper rod body, so that the rod expansion plug-in moves toward the expansion sleeve, and then the expansion sleeve is stretched open; second connecting member: use a bolt driver to rotate the second straight slot to make the lock core move toward the lower direction of the expansion part, thereby stretching the lower part of the expansion part). After the expansion is completed, the first plate on which the first connecting member is installed is close to the second plate on which the second connecting member is installed, so that the rod head is aligned with the slot, and force is applied to make the lower end of the rod body slide along the slide groove until the two plates are aligned and assembled. At this time, the lower end of the rod body will be clamped and fixed on the lock core. As can be seen from the figure, when using this powerful snap-on connector to mount two panels, the first and second connectors are not exposed after installation, and the mounting holes of the two panels are also invisible, making the connectors and mounting holes completely invisible, greatly improving the overall aesthetics. At the same time, its strong stability and internal pull-out force can help tighten and correct large dimensional errors or deformations of the panels.

[0096] Another installation method of this powerful snap connector: see Figures 30 to 48 as well as Figures 52 to 54 , first, preset mounting holes are opened in the two plates to be installed, and then the first connecting member and the second connecting member are respectively installed on the corresponding mounting holes, and then the first connecting member and the second connecting member are expanded separately (first connecting member: the length of the second spring is shorter than the first spring, so that the rod head can freely expand and contract and retract into the shell without being affected by the spring elastic force, and the bolt driver is used to align the cross slot on the rod head and rotate it, and the first connecting rod is rotated through the upper rod body, so that the rod expansion plug-in moves toward the expansion sleeve, and then the expansion sleeve is stretched open; second connecting member: the second straight slot is rotated with a bolt driver so that the lock core moves toward the lower direction of the expansion part, thereby stretching the lower part of the expansion part). After the expansion is completed, the first plate on which the first connecting member is installed is close to the second plate on which the second connecting member is installed, so that the rod head is aligned with the slot for fit. The rod head will be attracted out by the magnetic block, and continue to apply force until the two plates are aligned and assembled. At this time, the lower end of the rod body will be clamped and fixed on the lock core. As can be seen from the figure, when using this powerful snap-on connector to mount two panels, the first and second connectors are not exposed after installation, and the mounting holes of the two panels are also invisible, making the connectors and mounting holes completely invisible, greatly improving the overall aesthetics. At the same time, its strong stability and internal pull-out force can help tighten and correct large dimensional errors or deformations of the panels.

[0097] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0098] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made based on the essence of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A strong snap-on connector, characterized in that: include: a first connecting member, which is used to be pre-embedded in the first plate, the first connecting member comprising a rod body, a rod expansion plug and an expansion sleeve, the upper end of the rod body being rotatably connected to the rod expansion plug via a first connecting rod, the expansion sleeve being elastic and being sleeved over the first connecting rod and a portion of the rod expansion plug; The second connecting member is used to be pre-embedded in the second plate member. The second connecting member includes an expansion portion and a guide portion. A lock core is provided in the expansion portion. The upper and lower surfaces of the lock core are through-connected and a notch is provided on its side wall. The lower part of the expansion portion is elastic. The guide portion has a notch and a slide groove. The notch is adapted to the lower end of the rod body, and the slide groove is inclined from the notch to the notch.

2. The strong snap connector according to claim 1, characterized in that: The shape of the rod expansion plug is larger at the top and smaller at the bottom, the outer surface of the rod expansion plug has an inclined portion, the expansion sleeve is arranged at the lower part of the rod expansion plug, a first slope is provided in the expansion sleeve, the first slope is inclined downward and toward the central axis of the expansion sleeve, the first slope is adapted to the inclined portion, the rod expansion plug is provided with a first threaded hole passing through its upper and lower surfaces, the outer surface of the first connecting rod is provided with a first thread, the first thread is threadedly engaged with the first threaded hole, the lower end of the first connecting rod has a protrusion protruding outward, the protrusion abuts with the lower end of the expansion sleeve, the first connecting rod is provided with a first through hole passing through its upper and lower surfaces, the first through hole has a limiting step protruding inwardly, the upper end of the rod body has a limiting head, the limiting head can abut against the limiting step, the outer surface of the rod expansion plug is provided with a limiting block, the expansion sleeve is provided with a limiting groove, the limiting groove is adapted to the limiting block.

3. The strong snap fastener connector according to claim 1, characterized in that: The outer surface of the lock core is provided with a second thread, and the expansion part has a second threaded hole. The second thread is adapted to the second threaded hole. The lower part of the second threaded hole is provided with a second slope, which is inclined downward and toward the central axis of the expansion part.

4. The strong snap fastener connector according to claim 1, characterized in that: The rod body includes an upper rod body and a lower rod body that are detachably connected, the upper end of the upper rod body is provided with the limit head, the lower end of the upper rod body is provided with a third thread, the upper end of the lower rod body is provided with a third threaded hole, the third threaded hole is adapted to the third thread, the lower end of the lower rod body is connected to the rod head through the second connecting rod, the diameter of the second connecting rod gradually decreases from the lower rod body to the rod head, the rod head is elliptical, a cross groove is provided on the rod head, two bosses are provided on the upper surface of the expansion part, the two bosses are arc-shaped and elastic, the two bosses are horizontally facing the notch, a traction slope is provided below the boss, and the spacing between the two bosses is smaller than the diameter of the second connecting rod.

5. The strong snap fastener connector according to claim 4, characterized in that: It also includes a first spring, and the upper end of the lower rod body is also provided with six grooves, the third threaded hole is provided in the six-sided grooves, and a six-sided clamping block is provided in the six-sided grooves. The six-sided clamping block is provided with a second through hole running through its upper and lower surfaces, and the second through hole is adapted to the upper rod body. The first spring is sleeved outside the upper rod body, and the two ends of the first spring are respectively in contact with the lower surface of the first connecting rod and the upper surface of the six-sided clamping block.

6. The strong snap fastener connector according to claim 4, characterized in that: It also includes a second spring, the rod head is made of metal, the upper end of the lower rod body is also provided with six grooves, the third threaded hole is provided in the six-sided grooves, and a six-sided clamping block is provided in the six-sided grooves. The six-sided clamping block is provided with a second through hole running through its upper and lower surfaces, the second through hole is adapted to the upper rod body, the second spring is sleeved outside the upper rod body, and the two ends of the second spring are respectively in contact with the lower surface of the first connecting rod and the upper surface of the six-sided clamping block, and a magnetic block is provided on the bottom surface of the slide groove, and the magnetic block can attract the rod head.

7. The strong snap fastener connector according to claim 1, characterized in that: The first connecting member also includes a hollow shell, the upper end of the shell is provided with a fourth threaded hole, the lower part of the expansion sleeve has a fourth thread, the fourth thread is adapted to the fourth threaded hole, the diameter of the lower end opening of the shell is smaller than the diameter of the lower rod body, the lower surface of the shell is provided with a first straight groove, the outer surface of the shell is provided with a rod self-tapping tooth, the upper end of the shell is provided with a first back-off tooth, the lower end of the expansion sleeve is provided with a second back-off tooth, the first back-off tooth is adapted to the second back-off tooth.

8. The strong snap fastener connector according to claim 1, characterized in that: The outer surface of the expansion sleeve is provided with multi-layer toothed anti-backward teeth, and a bending notch is opened in the middle of the multi-layer toothed anti-backward teeth. The outer surface of the expansion part is provided with first inverted teeth, and the outer surface of the guide part is provided with second inverted teeth.

9. The strong snap fastener connector according to claim 1, characterized in that: The lock core is threadedly connected to the expansion portion, and a second straight-edge notch is formed on the upper surface of the lock core.

10. The strong snap fastener connector according to claim 1, characterized in that: The upper surface of the guide portion is flush with the upper surface of the expansion portion, the depth of the guide portion is smaller than the depth of the expansion portion, and the diameter of the guide portion is smaller than the diameter of the expansion portion.

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