A connecting structure of metal and wooden furniture fittings

Abstract

The utility model relates to furniture accessory technical field discloses a kind of connecting structure of metal and wooden furniture accessory, the utility model includes the first panel of opposite arrangement, metal material, set threaded cavity and second panel, wooden material, set accommodating groove and engaging groove;The fixing device in accommodating groove contains joint plate, the first guide rail of joint plate is opened with introduction hole, limiting hole and longitudinal slot, and two end fastening holes are connected with engaging groove by screwing rod;Interlocking piece is movable in threaded cavity, containing the threaded head of screwing with threaded cavity, the movable rod of adapting longitudinal slot and the retaining block less than introduction hole and greater than limiting hole in size;This structure core component is less, assembly threshold is low, can adapt metal and wooden double material characteristic, realize long-term firm connection, applicable to various metal, wooden combination furniture.

Description

Technical Field

[0001] This utility model relates to the field of furniture accessories technology, and in particular to a connection structure for metal and wooden furniture accessories. Background Technology

[0002] In the furniture manufacturing industry, metal panels, such as stainless steel and aluminum alloy panels, are often used in combination with wood panels, such as solid wood and engineered wood panels, due to their high strength and wear resistance. This combination aims to balance structural performance and aesthetic appeal. The reliable connection between the two types of panels is a core technical requirement for furniture assembly. The ease of assembly, the firmness of the connection, and the compatibility of the materials in the relevant connection structure directly affect the production efficiency, user experience, and lifespan of the furniture.

[0003] In Chinese patent publication CN209053890U, this utility model discloses a furniture accessory for fixing furniture panels. It achieves quick assembly and disassembly of the panel through a snap-fit ​​structure of an arc-shaped slot and an arc-shaped insert. Although it solves the problems of inconvenience and easy damage to the panel caused by traditional threaded knobs, it still has obvious limitations: the structure relies on the cooperation of multiple components such as a fixing plate, a drive shaft, a drive plate, and an arc-shaped insert, and the number of components is not significantly reduced, so the production and assembly costs are still high; the arc snap-fit ​​is a unidirectional limiting mechanism, which has weak resistance to lateral disengagement, and the high strength of the metal panel can easily cause the arc-shaped insert to deform or disengage when subjected to external impact, making it difficult to meet the needs of heavy-duty scenarios; it does not consider the material differences between metal and wood panels. The arc slot of the wood panel is prone to moisture absorption and deformation, which can increase the snap-fit ​​gap, while the arc-shaped insert of the metal panel cannot adapt to this deformation due to its high rigidity. Long-term use can easily lead to loosening of the connection, and the metal panel lacks a suitable threaded connection structure, so it cannot achieve high-strength fixation through rigid transmission.

[0004] In summary, the current connection structures for metal and wood furniture accessories still have significant shortcomings in terms of ease of assembly, connection strength, material compatibility, and cost control. The industry urgently needs a connection structure with fewer components, lower assembly threshold, compatibility with the characteristics of both metal and wood materials, and long-term reliable connection to solve the pain points of existing technologies. Utility Model Content

[0005] The purpose of this utility model is to solve the problems existing in the prior art by proposing a connection structure for metal and wooden furniture accessories.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A connection structure for metal and wood furniture fittings includes a furniture assembly. The furniture assembly includes a first panel and a second panel, which are disposed opposite to each other. The first panel has a threaded cavity on the side near the second panel, and the second panel has a receiving groove on the side near the threaded cavity. The receiving groove has engagement grooves at both ends, and a fixing device is provided in the receiving groove. The fixing device includes a joint plate, the joint plate is provided with a first guide rail, the first guide rail includes an inlet hole and a limiting hole arranged sequentially along the length of the joint plate, a longitudinal groove is provided through the inlet hole and the limiting hole, fastening holes are provided at both ends of the joint plate, the fastening holes and the meshing grooves are corresponding to each other and connected to each other, and a screw rod is provided in the fastening hole. An interlocking component is movably disposed within a threaded cavity. The interlocking component includes a threaded head that is screwed into the threaded cavity. One end of the threaded head is provided with a movable rod that is adapted to the size of a longitudinal groove. A retaining block is provided at the end of the movable rod away from the threaded head. The size of the retaining block is smaller than the inlet hole but larger than the limit hole.

[0007] Preferably, the two ends of the combined plate are respectively provided with fastening holes that penetrate the plate surface, and each of the fastening holes is coaxially corresponding to the meshing grooves at both ends of the receiving groove.

[0008] Preferably, the meshing groove is provided with an internal thread, and the fastening hole and the corresponding internal thread meshing groove are both provided with a screw rod. The outer circumferential surface of the screw rod is provided with an external thread. The screw rod is screwed into the meshing groove through the external thread to fix the joint plate in the receiving groove.

[0009] Preferably, enclosing blocks are symmetrically arranged at the connection between the longitudinal groove and the limiting hole, and the gap between the two enclosing blocks is smaller than that of the movable rod.

[0010] Preferably, the enclosing block is made of a flexible material.

[0011] Preferably, the combined plate has a movable part at one end near the second panel, and the movable part has a moving cavity inside. The moving cavity is connected to the first guide rail. The moving cavity includes a first cavity and a second cavity. The size of the first cavity is adapted to the movable rod, and the size of the second cavity is matched with the size of the retaining block.

[0012] Preferably, a limiting block is provided at the bottom end of the second cavity, the limiting block being positioned corresponding to the enclosing block, and the limiting block being made of a flexible material.

[0013] Preferably, the first panel is made of stainless steel.

[0014] Preferably, the second panel is made of wood.

[0015] Preferably, the joint plate is provided with a release groove, which is symmetrically arranged on both sides of the enclosing block.

[0016] Compared with the prior art, the beneficial effects of this utility model are: This invention, through the integrated connection system of panel, fixing device, and interlocking component, achieves a hierarchical positioning path for the interlocking component, with the first guide rail of the connecting plate in the fixing device providing introduction, guidance, and locking. The introduction hole, due to its size matching with the retaining block, allows for quick insertion of the interlocking component. The longitudinal groove and the movable rod are size-matched to ensure precise movement direction. The size difference between the limiting hole and the retaining block effectively restricts the lateral disengagement of the interlocking component, effectively solving the pain points of difficult assembly and positioning and easy loosening in existing furniture connection structures. The connecting plate is connected to the meshing groove of the second panel receiving groove through the fastening holes at both ends, and achieves rigid positioning with the screw rod. At the same time, the interlocking component is screwed into the threaded cavity of the first panel through the threaded head, forming a dual force transmission path of the first panel, interlocking component, connecting plate, and second panel, ensuring the firmness of the connection between the metal and wood panels. Moreover, the overall structure only includes three core components: furniture components, fixing device, and interlocking component, greatly simplifying the complex structure of existing multi-component connectors and significantly reducing the difficulty of assembly operation and production and use costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a connection structure for metal and wood furniture accessories proposed in this utility model. Figure 2 This is a schematic diagram of a joint plate structure for a connection structure between metal and wood furniture accessories proposed in this utility model; Figure 3 This is a schematic diagram of the internal structure of the movable part of a connection structure for metal and wood furniture accessories proposed in this utility model. Figure 4 This is a schematic diagram showing the connection between the first panel and the second panel of a connection structure for metal and wood furniture accessories proposed in this utility model.

[0018] In the diagram: 1. First panel; 2. Second panel; 3. Threaded cavity; 4. Receiving groove; 5. Engaging groove; 6. Fixing device; 7. Connecting plate; 8. First guide rail; 9. Inlet hole; 10. Limiting hole; 11. Longitudinal groove; 12. Fastening hole; 13. Engaging rod; 14. Interlocking component; 15. Threaded head; 16. Movable rod; 17. Retaining block; 18. Enclosing block; 19. Movable part; 20. Moving cavity; 21. First cavity; 22. Second cavity; 23. Limiting block; 24. Release groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figures 1-4 A connection structure for metal and wood furniture accessories, characterized in that: it includes a furniture component, the furniture component including a first panel 1 and a second panel 2, the first panel 1 and the second panel 2 being arranged opposite to each other, the first panel 1 having a threaded cavity 3 on the side near the second panel 2, the second panel 2 having a receiving groove 4 on the side near the threaded cavity 3, the receiving groove 4 having engagement grooves 5 at both ends, and a fixing device 6 being provided in the receiving groove 4; The fixing device 6 includes a connecting plate 7, the connecting plate 7 having a first guide rail 8, the first guide rail 8 including an inlet hole 9 and a limiting hole 10 arranged sequentially along the length of the connecting plate 7, a longitudinal groove 11 being formed between the inlet hole 9 and the limiting hole 10, fastening holes 12 being formed at both ends of the connecting plate 7, the fastening holes 12 being corresponding to and communicating with the meshing groove 5, and a screw rod 13 being provided in the fastening hole 12; An interlocking component 14 is movably disposed within a threaded cavity 3. The interlocking component 14 includes a threaded head 15, which is screwed into the threaded cavity 3. One end of the threaded head 15 is provided with a movable rod 16, which is adapted to the size of the longitudinal groove 11. A retaining block 17 is provided at the end of the movable rod 16 away from the threaded head 15. The retaining block 17 is smaller than the inlet hole 9 but larger than the limiting hole 10.

[0021] In the example of this application, the integrated connection system of panel, fixing device 6, and interlocking component 14 realizes that the first guide rail 8 of the connecting plate 7 in the fixing device 6 provides a hierarchical positioning path for the interlocking component 14 for introduction, guidance, and locking. The introduction hole 9, due to its size matching with the retaining block 17, allows for the quick insertion of the interlocking component 14. The longitudinal groove 11 and the movable rod 16 are sized to ensure precise movement direction. The size difference between the limiting hole 10 and the retaining block 17 effectively restricts the lateral disengagement of the interlocking component 14, effectively solving the pain points of difficult assembly and positioning and easy loosening in existing furniture connection structures; the connecting plate 7... The fastening holes 12 at both ends are connected to the meshing grooves 5 of the receiving groove 4 of the second panel 2, and are rigidly positioned in conjunction with the screw rod 13. At the same time, the interlocking component 14 is screwed to the threaded cavity 3 of the first panel 1 through the threaded head 15, forming a dual force transmission path of the first panel 1, the interlocking component 14, the connecting plate 7, and the second panel 2, ensuring the firmness of the connection between the metal and wood panels. Moreover, the overall structure only includes three core components: furniture components, fixing device 6, and interlocking component 14, which greatly simplifies the complex structure of existing multi-component connectors and significantly reduces the difficulty of assembly operation and production and use costs. The first panel 1 and the second panel 2 are made of stainless steel and wood respectively, and are integrally formed.

[0022] In the example of this application, fastening holes 12 penetrating the surface of the plate are respectively provided at both ends of the joint plate 7, and each of the fastening holes 12 is coaxially corresponding to the meshing grooves 5 at both ends of the receiving groove 4.

[0023] As a preferred example of this utility model, the fastening holes 12 at both ends of the connecting plate 7 pass through the upper and lower plate surfaces and are coaxially corresponding to the meshing groove 5, further optimizing the assembly accuracy and stability of the fixing device 6. The design of the fastening holes 12 passing through the upper and lower plate surfaces ensures that the screw rod 13 can smoothly pass through the upper surface of the connecting plate 7 and connect with the lower meshing groove 5, avoiding the problem of misalignment of holes and difficult assembly caused by non-through holes. The coaxial correspondence between the fastening holes 12 and the meshing groove 5 can reduce the radial offset of the connecting plate 7 in the receiving groove 4, ensuring that the first guide rail 8 of the connecting plate 7 and the threaded cavity 3 of the first panel 1 are always in a preset aligned state, avoiding the interlocking part 14 from not being able to smoothly enter the guide rail due to the offset of the connecting plate 7, improving the assembly consistency and connection reliability, and solving the problem of the lack of assembly efficiency caused by the plate positioning deviation in the existing connection structure.

[0024] In the example of this application, the meshing groove 5 is provided with an internal thread, and the fastening hole 12 and the corresponding internal thread meshing groove 5 are provided with a screw rod 13. The outer circumferential surface of the screw rod 13 is provided with an external thread. The screw rod 13 fixes the joint plate 7 in the receiving groove 4 by screwing the external thread into the meshing groove 5.

[0025] As a preferred example of this utility model, the screw-fit between the internal thread of the engagement groove 5 and the external thread of the engagement rod 13 strengthens the connection strength between the fixing device 6 and the second panel 2. Compared with the traditional snap-fit ​​connection, the threaded screw-fit structure can provide a more stable axial locking force, which is especially suitable for the wooden second panel 2. The wooden material is prone to slight deformation due to changes in environmental humidity or temperature, which can effectively suppress the loosening of the joint plate 7 in the receiving groove 4 and avoid the problem of connection failure after long-term use of the existing non-threaded fixing method.

[0026] In the example of this application, enclosing blocks 18 are symmetrically arranged at the connection between the longitudinal groove 11 and the limiting hole 10, and the gap between the two enclosing blocks 18 is smaller than that of the movable rod 16.

[0027] As a preferred example of this utility model, a retaining block 18 is provided at the connection between the longitudinal groove 11 and the limiting hole 10, and the gap between the retaining block 18 and the two side retaining blocks 18 is smaller than that of the movable rod 16, thus constructing a dual anti-detachment system with the retaining block 17 limiting and the retaining block 18 providing secondary limiting: The gap size design of the enclosing block 18 can restrict the accidental slippage of the movable rod 16 in the longitudinal direction after the movable rod 16 enters the limiting hole 10, making up for the shortcomings of relying solely on the retaining block 17. This prevents the movable rod 16 from coming out along the edge of the limiting hole 10 when the furniture is subjected to vibration or external impact, thus solving the problem of poor impact resistance of the existing single-weight limiting structure. The symmetrical layout of the enclosing block 18 can make the movable rod 16 bear force evenly, avoiding the skewing of the movable rod 16 or the wear of the guide rail caused by unilateral limiting, extending the service life of the interlocking part 14 and the connecting plate 7, and ensuring the long-term stability of the connection structure.

[0028] In the example of this application, the enclosing block 18 is made of a flexible material.

[0029] As a preferred example of this utility model, the enclosure block 18 is made of flexible material, balancing the reliability of the limiting position with the ease of assembly: the deformable characteristics of the flexible material allow the movable rod 16 to compress the enclosure block 18 during assembly, generating elastic deformation, expanding the gap to smoothly enter the limiting hole 10, avoiding the problems of the movable rod 16 getting stuck or being difficult to pass through due to rigid enclosure block 18, or damage to parts due to forced assembly, thus reducing the difficulty of assembly operation; after the movable rod 16 enters the limiting hole 10, the flexible enclosure block 18 can return to its initial shape, and its elastic restoring force can closely fit the outer periphery of the movable rod 16, ensuring the limiting effect and buffering the small displacement of the movable rod 16 caused by vibration, reducing hard collision wear between parts, and adapting to the dynamic force scenarios in daily use of furniture; The flexible material is rubber, which is existing technology and will not be described in detail here.

[0030] In the example of this application, the joint plate 7 is provided with a movable part 19 at one end near the second panel 2. The movable part 19 has a movable cavity 20 inside. The movable cavity 20 is connected to the first guide rail 8. The movable cavity 20 includes a first cavity 21 and a second cavity 22. The size of the first cavity 21 is adapted to the movable rod 16, and the size of the second cavity 22 is matched with the size of the retaining block 17.

[0031] As a preferred example of this utility model, the combined plate 7 is provided with a movable part 19 and a moving cavity 20 connected to the first guide rail 8, which optimizes the moving accuracy and accommodation stability of the interlocking component 14: the first cavity 21 is size-matched with the movable rod 16, which can provide secondary guidance for the moving path of the movable rod 16, avoiding radial offset or shaking of the movable rod 16 in the longitudinal groove 11, and ensuring that the interlocking component 14 always moves along the preset trajectory; the second cavity 22 is size-matched with the retaining block 17, which can provide an independent accommodation space for the retaining block 17, avoiding interference between the retaining block 17 and other structures of the combined plate 7 during the movement. At the same time, through the connection design between the moving cavity 20 and the first guide rail 8, the synchronous positioning of the movable rod 16 and the retaining block 17 is realized, improving the coaxiality of the interlocking component 14 and the combined plate 7, and effectively solving the problem of assembly jamming caused by the offset of the interlocking component 14 in the existing structure.

[0032] In the example of this application, a limiting block 23 is provided at the bottom of the second cavity 22, the limiting block 23 is positioned corresponding to the enclosing block 18, and the limiting block 23 is made of flexible material.

[0033] As a preferred example of this utility model, the bottom end of the second cavity 22 is provided with a limiting block 23, which is made of flexible material and corresponds to the position of the enclosing block 18, forming a bidirectional flexible limiting structure. The positional correspondence between the limiting block 23 and the enclosing block 18 can limit the displacement of the retaining block 17 from the bottom end of the second cavity 22. Together with the limiting of the enclosing block 18 from the side of the longitudinal groove 11, a bidirectional locking is constructed to further prevent the retaining block 17 from coming out of the limiting hole 10 and improve the anti-loosening ability of the connection structure. The flexible material design of the limiting block 23 can avoid the retaining block 17 from colliding and being damaged by the rigid limiting structure during assembly or use. At the same time, its elastic deformation ability can adapt to the small dimensional deviations of the retaining block 17, improve the tolerance adaptability of the structure, and reduce assembly failures caused by processing errors.

[0034] In the example of this application, the joint plate 7 is provided with a release groove 24, which is symmetrically arranged on both sides of the enclosing block 18.

[0035] As a preferred example of this utility model, the connecting plate 7 is provided with release grooves 24, symmetrically located on both sides of the enclosing block 18, to extend the service life of the enclosing block 18 and the connecting plate 7. The release grooves 24 can effectively release the local stress generated by the enclosing block 18 during deformation, especially the stress concentration area at the root of the enclosing block 18, to avoid fatigue fracture caused by repeated deformation of the enclosing block 18, and to solve the problem of elastic decay in existing flexible limiting structures after long-term use. The symmetrical layout of the release grooves 24 can make the stress distribution on both sides of the enclosing block 18 uniform, to avoid the enclosing block 18 being skewed or damaged due to excessive stress on one side, to ensure that the enclosing block 18 always maintains a symmetrical limiting effect, and to further improve the long-term reliability of the connection structure.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A connection structure for metal and wooden furniture fittings, characterized in that: The furniture assembly includes a first panel (1) and a second panel (2), which are arranged opposite to each other. The first panel (1) has a threaded cavity (3) on the side near the second panel (2), and the second panel (2) has a receiving groove (4) on the side near the threaded cavity (3). The receiving groove (4) has engagement grooves (5) at both ends, and a fixing device (6) is provided in the receiving groove (4). The fixing device (6) includes a joint plate (7), the joint plate (7) is provided with a first guide rail (8), the first guide rail (8) includes an inlet hole (9) and a limiting hole (10) arranged sequentially along the length direction of the joint plate (7), a longitudinal groove (11) is provided between the inlet hole (9) and the limiting hole (10), and fastening holes (12) are provided at both ends of the joint plate (7), the fastening holes (12) are corresponding to the meshing groove (5) and are connected to each other, and a screw rod (13) is provided in the fastening hole (12). An interlocking component (14) is movably disposed within a threaded cavity (3). The interlocking component (14) includes a threaded head (15), which is screwed into the threaded cavity (3). One end of the threaded head (15) is provided with a movable rod (16), which is adapted to the size of the longitudinal groove (11). At the end of the movable rod (16) away from the threaded head (15), a retaining block (17) is provided. The retaining block (17) is smaller than the inlet hole (9) but larger than the limiting hole (10).

2. The connection structure for metal and wood furniture accessories according to claim 1, characterized in that, The two ends of the combined plate (7) are respectively provided with fastening holes (12) that penetrate the plate surface, and each of the fastening holes (12) is coaxially corresponding to the meshing grooves (5) at both ends of the receiving groove (4).

3. The connection structure for metal and wood furniture accessories according to claim 2, characterized in that, The meshing groove (5) is provided with an internal thread. The fastening hole (12) and the corresponding internal thread meshing groove (5) are provided with a screw rod (13). The outer circumferential surface of the screw rod (13) is provided with an external thread. The screw rod (13) is screwed into the meshing groove (5) through the external thread to fix the joint plate (7) in the receiving groove (4).

4. The connection structure for metal and wood furniture accessories according to claim 1, characterized in that, A symmetrical enclosure block (18) is provided at the connection between the longitudinal groove (11) and the limiting hole (10), and the gap between the two enclosure blocks (18) is smaller than that between the movable rod (16).

5. The connection structure for metal and wood furniture fittings according to claim 4, characterized in that, The enclosure block (18) is made of flexible material.

6. The connection structure for metal and wood furniture fittings according to claim 1, characterized in that, The combined plate (7) has a movable part (19) at one end near the second panel (2). The movable part (19) has a movable cavity (20) inside. The movable cavity (20) is connected to the first guide rail (8). The movable cavity (20) includes a first cavity (21) and a second cavity (22). The size of the first cavity (21) is adapted to the movable rod (16), and the size of the second cavity (22) is matched with the size of the retaining block (17).

7. The connection structure for metal and wood furniture fittings according to claim 6, characterized in that, The bottom end of the second cavity (22) is provided with a limiting block (23), which corresponds to the position of the enclosing block (18), and the limiting block (23) is made of flexible material.

8. The connection structure for metal and wood furniture fittings according to claim 1, characterized in that, The first panel (1) is made of stainless steel.

9. The connection structure for metal and wood furniture fittings according to claim 1, characterized in that, The second panel (2) is made of wood.

10. The connection structure for metal and wood furniture fittings according to claim 1, characterized in that, The combined plate (7) is provided with a release groove (24), which is symmetrically arranged on both sides of the enclosing block (18).

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