Fast-assembly elastic buckle connecting piece

Abstract

The invention provides a fast-assembly elastic buckle connecting piece, and relates to the technical field of furniture hardware, the fast-assembly 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 and a rod expansion insertion piece, and the upper end of the rod body is slidably arranged in the rod expansion insertion piece; the second connecting piece is used for being embedded into a second plate and comprises an expansion part and a guide part, a lock cylinder and a groove expansion inserting piece are arranged in the expansion part, the upper surface and the lower surface of the lock cylinder are communicated, a notch is formed in the side wall of the lock cylinder, and the groove expansion inserting piece is arranged below the lock cylinder. The lower portion of the expansion portion is elastic, the guide portion 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, and in particular to a concealed quick-loading snap-button 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. Summary of the Invention

[0009] In order to solve the problems of troublesome installation and insufficient stability in the prior art, the present invention provides a quick-install spring buckle connector, which can achieve fast and convenient installation and has high stability.

[0010] To achieve the above object, the present invention provides the following technical solutions:

[0011] A first connecting member is used to be embedded in the first plate, the first connecting member includes a rod body and a rod expansion plug-in, the upper end of the rod body is slidably disposed in the rod expansion plug-in, and the outer portion of the rod expansion plug-in is sheathed with an elastic expansion sleeve;

[0012] A second connecting member is used to be embedded in the second plate, the second connecting member includes an expansion portion and a guide portion, a lock core and a slot expansion plug are provided in the expansion portion, the upper and lower surfaces of the lock core are connected, and a side wall has a notch, the slot expansion plug is provided below the lock core, the lower portion 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;

[0013] In one state, the lower end of the rod body is inserted into the slot, slides along the slide groove toward the notch, thereby contacting the slot expansion plug-in and moving downward, thereby pushing the slot expansion plug-in to move downward to expand the lower part of the expansion part. At the same time, the upper end of the rod body drives the rod expansion plug-in to move downward to expand the expansion sleeve.

[0014] As described above, the quick-release snap connector, further, the shape of the rod expansion plug-in is large at the top and small at the bottom, the rod expansion plug-in is provided with a through hole which passes through its body from top to bottom, the through hole is provided with a limiting step which protrudes inward, the upper end of the rod body is slidably arranged in the through hole, the upper end of the rod body is provided with a limiting head which can abut against the limiting step, the outer surface of the rod expansion plug-in has a first inclined portion, the expansion sleeve is provided on the lower part of the rod expansion plug-in, a first slope is provided in the expansion sleeve, the first slope is inclined downward and toward the central axis of the expansion sleeve, and the first slope is adapted to the first inclined portion.

[0015] As described above, the quick-loading snap connector, 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 first thread, the upper end of the lower rod body is provided with a first threaded hole, the first thread is adapted to the first threaded hole, the lower end of the lower rod body is connected to a rod head through a connecting rod, the diameter of the connecting rod gradually decreases from the lower rod body toward the rod head, and the rod head is elliptical.

[0016] As described above, the quick-loading snap connector further has two bosses on the upper surface of the expansion portion, the two bosses are arc-shaped and elastic, the two bosses are horizontally facing the slot, a first traction bevel is provided below the bosses, a second traction bevel is provided in the lock core, the first traction bevel is adapted to the second traction bevel, and the distance between the two bosses is smaller than the diameter of the connecting rod.

[0017] As described above, the quick-loading snap connector, further, the shape of the slot expansion plug-in is large at the top and small at the bottom, the lower part of the slot expansion plug-in has a second inclined portion, a second slope is provided in the expansion portion, the second slope is inclined downward and toward the central axis of the expansion portion, the second slope is adapted to the second inclined portion, the upper part of the slot expansion plug-in has an inclined surface, the inclined surface is inclined upward toward the notch, the lower end of the inclined surface is connected to the second traction inclined surface, and the higher end of the inclined surface is connected to a plane.

[0018] The quick-loading snap connector as described above further includes a retaining ring and a spring. A retaining ring groove is provided at the lower part of the rod expansion plug-in. The retaining ring has a plurality of metal baffles arranged around its center. The metal baffles are elastic. The plurality of metal baffles are inclined downward and toward the central axis of the retaining ring. The diameter of the circular ring formed by the plurality of metal baffles is smaller than the diameter of the lower surface of the retaining ring groove. The retaining ring is arranged in the retaining ring groove. The upper rod body passes through the rod expansion plug-in and the spring. The diameter of the lower rod body is larger than the diameter of the upper rod body. The two ends of the spring respectively abut the lower surface of the rod expansion plug-in and the upper surface of the lower rod body.

[0019] As described above, the quick-release snap connector, further, the first connector also includes a hollow shell, the upper end of the shell is provided with a second threaded hole, the lower part of the expansion sleeve has a second thread, the second thread is adapted to the second 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 middle part 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.

[0020] As described above, the quick-release snap connector, further, the outer surface of the expansion sleeve is provided with multi-layer toothed anti-retraction teeth, and a bending notch is opened in the middle of the multi-layer toothed anti-retraction teeth, the outer surface of the expansion part is provided with a first inverted tooth, and the outer surface of the guide part is provided with a second inverted tooth.

[0021] As described above, the quick-release snap connector further has the lock core being threadedly connected to the expansion portion, and a second straight-groove notch being formed on the upper surface of the lock core.

[0022] As described above, the quick-release snap connector further has an upper surface of the guide portion flush with an upper surface of the expansion portion, a depth of the guide portion is smaller than a depth of the expansion portion, and a diameter of the guide portion is smaller than a diameter of the expansion portion.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention realizes a concealed connection between the first plate and the second plate through the linkage of the first connecting member and the second connecting member. The hardware of the connecting member 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.

[0025] 2. The upper portion of the locking rod of the first connector and the bottom of the locking groove of the second connector are both equipped with expansion plugs. When the two plates slide and lock, the first and second connectors expand in tandem, saving the time required to pre-embed and expand each component.

[0026] 3. The anti-retraction teeth on the outer surface of the expansion sleeve of the present invention, and the teeth on the outer surfaces of the expansion part and the guide part further increase the friction between it and the inner wall of the panel substrate, thereby greatly improving the stability of the connection between it and the panel. After the accessories are installed, it is difficult to fall out, so that the two panels can be stably installed, thereby making the assembly of the furniture more secure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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.

[0028] Figure 1 Schematic diagram of the structure of the quick-loading snap connector in an embodiment of the present invention;

[0029] Figure 2 This is a front view of the first connecting member in an embodiment of the present invention;

[0030] Figure 3 for Figure 2 Cross-section at AA;

[0031] Figure 4 This is an exploded view of the structure of the first connecting member in an embodiment of the present invention;

[0032] Figure 5 is a top view of the second connecting member in an embodiment of the present invention;

[0033] Figure 6 for Figure 5 Cross-section at BB;

[0034] Figure 7 This is an exploded view of the structure of the second connecting member in an embodiment of the present invention;

[0035] Figures 8 to 10 Schematic diagram of the installation of the first connecting member and the second connecting member in an embodiment of the present invention;

[0036] Figure 11 for Figure 8 sectional view of

[0037] Figure 12 for Figure 9 sectional view of

[0038] Figure 13 for Figure 10 sectional view of

[0039] Figures 14 to 16 Schematic diagram of the installation of the first plate and the second plate in an embodiment of the present invention;

[0040] In the figure: 1, first connecting member; 2, second connecting member; 3, rod expansion plug; 4, expansion sleeve; 5, expansion portion; 6, guide portion; 7, lock core; 8, slot expansion plug; 9, notch; 10, slide groove; 11, through hole; 12, limit step; 13, limit head; 14, first inclined portion; 15, first slope; 16, second inclined portion; 17, second slope; 18, upper rod body; 19, lower rod body; 20, first thread; 21, first threaded hole; 22, connecting rod; 23, rod head; 24, boss; 25, clamp Circlip; 26. Spring; 27. Housing; 28. First anti-retraction tooth; 29. ​​Second anti-retraction tooth; 30. Rod self-tapping tooth; 31. First inverted tooth; 32. Notch; 33. Retaining spring groove; 34. Second inverted tooth; 35. Second thread; 36. Second threaded hole; 37. Bending notch; 38. First traction slope; 39. Second traction slope; 40. First straight slot; 42. Second straight slot; 43. Inclined surface; 44. Plane; 45. Anti-retraction inverted tooth; 46. Metal baffle; 47. First plate; 48. Second plate. DETAILED DESCRIPTION

[0041] 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.

[0042] Example:

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] The present invention provides a technical solution: a quick-loading snap connector, which includes a first connector 1 and a second connector 2. The first connector 1 is used to be pre-buried in the first plate 47. The first connector 1 includes a rod body and a rod expansion plug 3. The upper end of the rod body is set in the rod expansion plug 3. The outer part of the rod expansion plug 3 is provided with an elastic expansion sleeve 4. The second connector 2 is used to be pre-buried in the second plate 48. The second connector 2 includes an expansion portion 5 and a guide portion 6. The expansion portion 5 is provided with a lock core 7 and a slot expansion plug 8. The upper and lower surfaces of the lock core 7 are through- The side wall has a notch 32, the slot expansion plug-in 8 is arranged below the lock core 7, the lower part of the expansion part 5 is elastic, the guide part 6 has a notch 9 and a slide groove 10, the notch 9 is adapted to the lower end of the rod body, and the slide groove 10 is inclined from the notch 9 to the notch 32; in one state, the lower end of the rod body is inserted into the notch 9, slides along the slide groove 10 to the notch 32, thereby contacting the slot expansion plug-in 8 and moving downward, thereby pushing the slot expansion plug-in 8 to move downward to expand the lower part of the expansion part 5, and at the same time, the upper end of the rod body drives the rod expansion plug-in 3 to move downward to expand the expansion sleeve 4.

[0048] Specifically, see Figures 8 to 16 The first connecting member 1 and the second connecting member 2 are respectively installed in the two plates that need to be spliced ​​(the first plate 47 and the second plate 48). When the two plates are spliced, the lower end of the rod in the first connecting member 1 is inserted into the slot 9 in the second connecting member 2, and the plate with the first connecting member 1 is pushed, so that the rod is forced to slide in the slide groove 10 toward the lock core 7. When the lower end of the rod reaches between the lock core 7 and the slot expansion plug-in 8, the lower end of the rod continues to be pushed. Due to obstructions in the front and above of the travel direction, the lower end of the rod can only move downward, thereby pushing the slot expansion plug-in 8 under the lock core 7 downward, and then expanding and fixing the lower part of the expansion part 5. At the same time, due to the downward movement of the lower end of the rod, its upper end drives the rod expansion plug-in 3 to move downward, and then also expands and fixes the expansion sleeve 4. Therefore, this quick-release snap connector only needs to use thrust to achieve quick and convenient installation of the two panels. At the same time, the thrust causes the top of the first connector 1 and the bottom of the second connector 2 to expand, and the two panels have higher stability after installation.

[0049] As an optional embodiment, in some embodiments, the rod expansion plug 3 is shaped as a large upper portion and a small lower portion. The rod expansion plug 3 is provided with a through hole 11 that runs through its body from top to bottom. The through hole 11 has an inwardly protruding limiting step 12. The upper end of the rod body is arranged in the through hole 11. The upper end of the rod body has a limiting head 13 that can abut against the limiting step 12. The outer surface of the rod expansion plug 3 has a first inclined portion 14. The expansion sleeve 4 is sleeved on the lower portion of the rod expansion plug 3. The expansion sleeve 4 is provided with a first slope 15. The first slope 15 is inclined downward and toward the central axis of the expansion sleeve 4. The first slope 15 is adapted to the first inclined portion 14. Wherein, refer again to Figure 2 and Figure 3 When the lower end of the rod body slides downward, the stopper 13 at the upper end of the rod body abuts the stopper step 12 in the rod expansion plug 3, thereby driving the rod expansion plug 3 downward, thereby achieving the effect of the rod expansion plug 3 expanding the expansion sleeve 4. In addition, the first slope 15 and the first inclined portion 14 have the same inclination. Since the rod expansion plug 3 is larger at the top and smaller at the bottom, and the expansion sleeve 4 is elastic, when the rod expansion plug 3 moves downward, the first inclined portion 14 of the rod expansion plug 3 and the first slope 15 of the expansion sleeve 4 closely cooperate to provide guidance for the movement of the rod expansion plug 3, thereby smoothly expanding the expansion sleeve 4. The overall structural design is simple and ingenious.

[0050] As an optional embodiment, in some embodiments, the rod body includes an upper rod body 18 and a lower rod body 19 that are detachably connected, the upper end of the upper rod body 18 has a limit head 13, the lower end of the upper rod body 18 has a first thread 20, the upper end of the lower rod body 19 is provided with a first threaded hole 21, the threaded hole 21 is adapted to the first thread 20, the lower end of the lower rod body 19 is connected to a rod head 23 through a connecting rod 22, the diameter of the connecting rod 22 gradually decreases from the lower rod body 19 to the rod head 23, and the rod head 23 is elliptical.

[0051] Specifically, see Figures 2 to 7 The rod body is specifically divided into an upper rod body 18 and a lower rod body 19. The upper rod body 18 and the lower rod body 19 are fixed by a threaded connection. This connection structure is simple and stable. Since the diameter of the through hole 11 is larger at the top and smaller at the bottom, the cross-section forms a convex shape. The upper rod body 18 passes through the through hole 11 from top to bottom. The upper limit head 13 of the upper rod body 18 abuts against the limit step 12 inside the through hole 11, preventing the upper rod body 18 from continuing to pass through the through hole 11. Its movement range is limited to the rod expansion plug 3. The rod head 23 is elliptical and has a certain thickness. On the one hand, the contact surface with the chute 10 is unevenly distributed in different directions. During the sliding process, the contact between the major and minor axes of the ellipse and the chute wall can effectively limit the freedom of the rod head 23 in multiple directions, making it less likely to shake left and right or up and down in the chute 10, making the sliding process more stable. Furthermore, once the first connector 1 is locked within the second connector 2, it remains stable and stable, meaning the cabinet shelves are more securely installed and prevent any wobble. Furthermore, the elliptical rod head 23 provides a relatively large contact area with the chute 10. When loaded, stress is more evenly distributed across the contact surface, reducing the risk of localized stress concentration. Furthermore, the diameter of the connecting rod 22 gradually decreases from the lower rod body 19 toward the rod head 23, limiting the length of the connecting rod 22 that can be pulled outward.

[0052] In the above embodiment, further, two bosses 24 are provided on the upper surface of the expansion portion 5. The two bosses 24 are arc-shaped and elastic. The two bosses 24 are horizontally oriented toward the notch 9. A first traction slope 38 is provided below the bosses 24. A second traction slope 39 is provided in the lock core 7. The first traction slope 38 is adapted to the second traction slope 39. The distance between the two bosses 24 is smaller than the diameter of the connecting rod 22. Figures 2 to 7 When the rod head 23 is tilted and displaced in the chute, the traction bevels (the first traction bevel 38 and the second traction bevel 39) will play an extrusion and guiding role, so that the lower rod body 19 is subjected to a vertical traction force, driving the entire rod body to be pulled out in the vertical direction. At the same time, the distance between the two bosses 24 is slightly smaller than the diameter of the connecting rod 22. Since the two bosses 24 are elastic, when the connecting rod 22 slides between the two bosses 24, the two bosses 24 are elastically deformed due to the presence of external force, allowing the connecting rod 22 to pass through. On the other hand, after the connecting rod 22 passes through the latter two bosses 24, the two bosses 24 return to their original state, forming a narrow channel behind the connecting rod 22. Without a certain degree of external force, the connecting rod 24 cannot return on its own, which can prevent children from accidentally disassembling the panel and increase the stability of the installation.

[0053] In the above embodiment, further, the shape of the slot expansion plug 8 is large at the top and small at the bottom. The bottom of the slot expansion plug 8 has a second inclined portion 16. The expansion portion 5 is provided with a second slope 17. The second slope 17 is inclined downward and toward the central axis of the expansion portion 5. The second slope 17 is adapted to the second inclined portion 16. The top of the slot expansion plug 8 has an inclined surface 43. The inclined surface 43 is inclined upward toward the notch 32. The higher end of the inclined surface 43 is connected to a flat surface 44. Figure 5 and Figure 6 The second slope 17 has the same inclination as the second inclined portion 16. Since the shape of the slot expansion plug-in 8 is larger at the top and smaller at the bottom, the lower part of the expansion portion 5 is elastic. When the slot expansion plug-in 8 moves downward, the second inclined portion 16 of the slot expansion plug-in 8 and the second slope 17 of the expansion portion 5 are tightly matched, which can provide a guide for the downward displacement of the slot expansion plug-in 8. The rod head 23 moves along the inclined surface 43 (the inclined surface 43 cooperates with the traction inclined surface to keep the entire rod body continuously under force in the vertical direction) to the plane 44, where the force presses the slot expansion plug-in 8 downward, thereby expanding the lower part of the expansion portion 5.

[0054] As an optional embodiment, in some embodiments, a circlip ring 25 and a spring 26 are further included. A circlip groove 33 is provided at the lower portion of the rod expansion plug 3. The circlip ring 25 has a plurality of metal baffles 46 arranged around its center. The metal baffles 46 are elastic and tilt downward and toward the central axis of the circlip ring 25. The diameter of the ring formed by the plurality of metal baffles 46 is smaller than the diameter of the lower surface of the circlip groove 25. The circlip ring 25 is arranged in the circlip groove 33. The upper rod body 18 passes through the rod expansion plug 3 and the spring 26. The diameter of the lower rod body 19 is larger than the diameter of the upper rod body 18. The two ends of the spring 26 respectively abut against the lower surface of the rod expansion plug 3 and the upper surface of the lower rod body 19. Figure 3 After the expansion sleeve 4 is installed on the outer edge of the rod expansion insert 3, the circlip ring 25 is inserted from the bottom into the circlip groove 33. Upon contacting the bottom of the circlip groove 33, the downwardly inclined, elastic metal retaining piece 46 is squeezed and elastically deformed, expanding outward and releasing a circular space that allows the circlip groove 33 to pass through. Once the elastic metal piece on the circlip ring 25 has completely passed the step at the bottom of the circlip groove 33, the elastic metal retaining piece 46 quickly returns to its original shape, abutting the step at the bottom of the circlip groove 33 from above, forming a reverse tooth to prevent it from sliding back out. At this point, the circlip ring 25 is confined to the bottom of the rod expansion insert 3 and cannot retreat. Its upper portion abuts the expansion sleeve 4, providing a positioning mechanism for the expansion sleeve 4 and ensuring that the expansion sleeve 4 will not fall downward out of the rod expansion insert 3 under all operating conditions. Furthermore, during panel installation, the spring 26 is subjected to force and elastically deforms. After the panel is removed, the external force disappears, and the spring 26's elastic force causes the upper rod body 18 to move upward and reset.

[0055] As an optional embodiment, in some embodiments, the first connecting member 1 further includes a hollow shell 27, the upper end of the shell 27 is provided with a second threaded hole 36, the lower portion of the expansion sleeve 4 has a second thread 35, the second thread 35 is adapted to the second threaded hole 36, the diameter of the lower end opening of the shell 27 is smaller than the diameter of the lower rod 19, the lower surface of the shell 27 is provided with a first straight slot 40, the outer surface of the shell is provided with a rod self-tapping tooth 30, the upper end of the shell 27 is provided with a first back-off tooth 28, the middle portion of the expansion sleeve 4 is provided with a second back-off tooth 29, the first back-off tooth 28 is adapted to the second back-off tooth 29. Wherein, again refer to Figure 2The shell 27 and the expansion sleeve are fixed by a threaded connection. In addition, the tooth shape (both are triangular teeth) and the number of teeth of the first anti-backlash tooth 28 and the second anti-backlash tooth 29 are the same. When the shell 27 and the expansion sleeve 4 are screwed together, the engagement between the first anti-backlash tooth 28 and the second anti-backlash tooth 29 can effectively prevent the two from rotating relative to each other, so that the two can no longer be retracted and loosened. At the same time, the threaded connection is also locked to the terminal end, forming a tightly connected state in which the two can no longer move forward or backward relative to each other. Similarly, in the process of installing the first connecting member 1, a matching flat-blade screwdriver is used to screw the first connecting member mating rod self-tapping 30 into the preset installation hole of the first plate 47 through the first flat-blade notch 40 on the lower surface of the shell 27. The anti-backlash effect played by the first anti-backlash tooth 28 and the second anti-backlash tooth 29 prevents the expansion sleeve 4 from rotating with the shell 27 in the preset installation hole, resulting in the occurrence of falling off.

[0056] As an optional embodiment, in some embodiments, the outer surface of the expansion sleeve 4 is provided with a multi-layer toothed anti-backward tooth 45, and a bending notch 37 is opened in the middle of the multi-layer toothed anti-backward tooth 45, the outer surface of the expansion portion 5 is provided with a first inverted tooth 31, and the outer surface of the guide portion 6 is provided with a second inverted tooth 34. Figure 6 The backstop teeth 45 can cooperate with the expansion sleeve 4 to form a more stable expansion self-locking structure within the first plate 47. Similarly, the first and second back teeth 31 and 34 can form a more stable expansion self-locking structure between the expansion portion 5 and the guide portion 6 within the second plate 48. In addition, the bending notch 37 reserves a releasable space for the annular expansion of the upper half.

[0057] As an optional embodiment, in some embodiments, the lock core 7 is threadedly connected to the expansion portion 5, and a second straight groove 42 is opened on the upper surface of the lock core 7. Figure 5 The lock core 7 is fixed to the expansion portion 5 by a threaded connection. The lock core 7 can be screwed into the expansion portion 5 using a matching flat-blade screwdriver corresponding to the second flat-blade notch 42. When the lock core 7 is tightened into place, the notch 32 of the lock core 7 is aligned with the two bosses 24 and faces the first traction slope 38 in the guide portion 6.

[0058] 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 7Because the depth of the guide portion 6 is smaller than that of the expansion portion 5, it can be used in mounting holes of varying depths. Furthermore, the lower portion of the expansion portion 5 can expand outward to enhance installation 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 provides a larger area for the backstop teeth, resulting in stronger expansion locking force and friction.

[0059] Installation and use of this quick-release snap connector: See again Figures 8 to 16 First, pre-set mounting holes are created in the two plates to be installed. The first and second connectors are then installed in their corresponding mounting holes. After installation, the lower end of the rod of the first connector is exposed. The lower end of the rod is inserted into the notch of the second connector, and the plate with the first connector is pushed, causing the rod to slide in the slot toward the lock core. After the lower end of the rod reaches the first traction slope, the lower end of the rod continues to be pushed. Due to obstacles in the front and above the direction of travel, the lower end of the rod can only move diagonally downward along the first traction slope. When the rod reaches the connection between the lock core and the slot expansion plug, the running track connects to the second traction slope. At this time, the lock rod continues to be pushed in the forward direction, thereby pushing the slot expansion plug below the lock core downward, releasing space for the rod head to pass through, thereby expanding and fixing the lower part of the expansion portion. When the rod head moves to the plane, the forward formation is completed, and the slot expansion plug has moved downward a distance equal to the thickness of the rod head. At the same time, as the lower end of the rod body moves downward, its upper end drives the rod expansion plug downward, thereby also expanding and securing the expansion sleeve. As can be seen from the figure, when using this quick-release snap connector to install two panels, the first and second connectors are not exposed after installation, and the mounting holes of the two panels are also not visible, making the connectors and mounting holes completely invisible, greatly improving the overall aesthetics.

[0060] Installation principle of this quick release buckle connector: see Figures 8 to 13The first plate and the second plate are connected perpendicularly to each other. The second connecting member and the first connecting member are respectively assembled and installed in the preset mounting holes of the plates in the above manner. The rod head of the first connecting member is inserted into the notch of the second connecting member and hung on the slide. Then the first plate is pushed in a direction perpendicular to the installation of the first connecting member. Inside the second connecting member, the rod head slides along the traction slope to between the lock core and the slot expansion plug-in. During this process, the rod head moves horizontally and pushes the slot expansion plug-in to move vertically downward along the slope through the extrusion of the space between the two. The lower end of the expansion part with a certain elasticity is stretched open, and the inverted teeth on the outer edge of the expansion part cooperate to form an expansion self-locking in the second plate. On the other hand, during the tilting displacement of the upper rod head of the second connecting member in the slide, the traction slope will play an extrusion guiding role, so that the lower rod body is subjected to vertical traction, driving the rod body to be pulled out in the vertical direction. Since there is a limit head at the upper end of the upper rod body, which is engaged with the limit step on the expansion plug-in, the rod body is pulled out, which will drive the rod expansion plug-in to move downward, and at the same time expand the expansion sleeve, cooperating with the toothed stop teeth on the outer edge of the expansion sleeve to form expansion self-locking in the first plate.

[0061] Therefore, the present invention solves some pain points existing in the existing industry and provides an innovative hidden snap-on connector that is invisible, beautiful, easy to produce and install, and can be repeatedly disassembled and assembled. The connector of the present invention uses invisible connection to prevent the connector holes from being exposed after the cabinet is assembled, providing an aesthetically pleasing and clean appearance. As for the production and sales system of the furniture factory: the connector of the present invention can be pre-buried in the factory, and then the panels can be flattened and packaged, which improves processing efficiency, reduces redundant costs such as logistics and after-sales, and helps furniture factories build a stable and economical delivery model. In addition, the connector of the present invention can achieve tool-free installation at the terminal, expand a new model for furniture Internet sales, lower the threshold for furniture purchases, expand new industry models, and find new opportunities and increments. At the same time, the connector of the present invention can achieve: while the two plates are locked, the internal linkage expansion of the connector is achieved, saving the working time of pre-buried expansion of each accessory, one action, three lockings. It further provides a firm plate connection method for furniture with higher strength and stability. In addition, the connector of the present invention locks the panels by sliding, and is provided with a push-locking tolerance. When the holes punched or the materials cut at the furniture factory do not meet the standard size, the tolerance adjustment can still ensure that the furniture installation flatness is not affected, thus avoiding the defects of uneven panel connections. In addition, the furniture assembled by the connector of the present invention has a convenient single-panel disassembly plan reserved. Any after-sales problem in the cabinet can be quickly solved in this way, simplifying the after-sales process. At the same time, the panels that have been assembled using the connector are limited by their internal devices and will not become loose due to use, and no maintenance is required through a device similar to a "cam lock".

[0062] 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.

[0063] 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 quick-load snap connector, characterized in that: include: A first connecting member is used to be embedded in the first plate, the first connecting member includes a rod body and a rod expansion plug-in, the upper end of the rod body is slidably disposed in the rod expansion plug-in, and the outer portion of the rod expansion plug-in is sheathed with an elastic expansion sleeve; A second connecting member is used to be embedded in the second plate, the second connecting member includes an expansion portion and a guide portion, a lock core and a slot expansion plug are provided in the expansion portion, the upper and lower surfaces of the lock core are connected, and a side wall has a notch, the slot expansion plug is provided below the lock core, the lower portion 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; In one state, the lower end of the rod body is inserted into the slot, slides along the slide groove toward the notch, thereby contacting the slot expansion plug-in and moving downward, thereby pushing the slot expansion plug-in to move downward to expand the lower part of the expansion part. At the same time, the upper end of the rod body drives the rod expansion plug-in to move downward to expand the expansion sleeve.

2. The quick-loading snap connector according to claim 1, characterized in that: The shape of the rod expansion plug is large at the top and small at the bottom. The rod expansion plug is provided with a through hole that runs through its body from top to bottom. The through hole is provided with a limiting step protruding inward. The upper end of the rod body is slidably arranged in the through hole. The upper end of the rod body is provided with a limiting head that can abut against the limiting step. The outer surface of the rod expansion plug has a first 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, and the first slope is adapted to the first inclined portion.

3. The quick-loading snap 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 has the limit head, the lower end of the upper rod body has a first thread, the upper end of the lower rod body is provided with a first threaded hole, the first thread is adapted to the first threaded hole, the lower end of the lower rod body is connected to a rod head through a connecting rod, the diameter of the connecting rod gradually decreases from the lower rod body toward the rod head, and the rod head is elliptical.

4. The quick-loading snap connector according to claim 3, characterized in that: 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 slot. A first traction slope is provided below the bosses. A second traction slope is provided in the lock core. The first traction slope is adapted to the second traction slope. The distance between the two bosses is smaller than the diameter of the connecting rod.

5. The quick-loading snap connector according to claim 4, characterized in that: The shape of the slot expansion plug is large at the top and small at the bottom. The bottom of the slot expansion plug has a second inclined portion. A second slope is provided in the expansion portion. The second slope is inclined downward and toward the central axis of the expansion portion. The second slope is adapted to the second inclined portion. The top of the slot expansion plug has an inclined surface. The inclined surface is inclined upward toward the notch. The lower end of the inclined surface is connected to the second traction inclined surface, and the higher end of the inclined surface is connected to a plane.

6. The quick-loading snap connector according to claim 3, characterized in that: It also includes a circlip ring and a spring. A circlip groove is provided at the lower part of the rod expansion plug-in. The circlip ring has a plurality of metal baffles arranged around its center. The metal baffles are elastic. The plurality of metal baffles are inclined downward and toward the central axis of the circlip ring, and the diameter of the circular ring formed by the plurality of metal baffles is smaller than the diameter of the lower surface of the circlip groove. The circlip ring is arranged in the circlip groove, and the upper rod body passes through the rod expansion plug-in and the spring. The diameter of the lower rod body is larger than the diameter of the upper rod body, and the two ends of the spring are respectively in contact with the lower surface of the rod expansion plug-in and the upper surface of the lower rod body.

7. The quick-loading snap connector according to claim 3, characterized in that: The first connecting member also includes a hollow shell, the upper end of the shell is provided with a second threaded hole, the lower part of the expansion sleeve has a second thread, the second thread is adapted to the second 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 middle part 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 quick-loading snap 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 quick-loading snap 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 quick-loading snap 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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