A concealed locking mechanism for furniture connectors

Abstract

This utility model belongs to the field of furniture technology, specifically relating to a concealed locking mechanism for furniture connectors. It includes a first board and a second board, with a wooden plug on the first board. The first board and the second board are connected by a connector, which includes a lock head with a slot. The lock head is fixed to the second board by bolts. The second lock head has a sliding groove inside and a locking block inside. The locking block is elastically connected to the inner wall of the second lock head by a spring. This concealed locking mechanism primarily secures the connector through the mechanical locking of the locking block and the slot. Simultaneously, a push rod inserted into an expansion joint causes the expansion joint to elastically deform and tightly adhere to the inner wall of the groove, generating significant static friction for auxiliary fixation. This dual-fixing mechanism significantly improves the overall stability and shear resistance of the board connection, effectively preventing loosening or displacement of the connection.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, specifically to a concealed locking mechanism for furniture connectors. Background Technology

[0002] Concealed latches for furniture connectors are a type of hardware used to connect various components such as boards and frames during furniture assembly. Their core feature is that after installation, they can be hidden inside the furniture or at the joints, so that no trace of the connector can be seen from the outside, thus ensuring the cleanliness and aesthetics of the furniture surface.

[0003] Currently, most connections rely on a single connection structure, such as simple bolt fixing or simple snap-fit ​​connection, lacking a dual fixing mechanism. This makes it difficult to form a synergistic effect of mechanical locking and interference fit. The connection parts are prone to loosening and displacement due to external forces, and have weak shear resistance. In view of this, we propose a hidden lock for furniture connectors. Utility Model Content

[0004] The main objective of this invention is to provide a concealed locking mechanism for furniture connectors, which can solve the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model proposes a concealed latch for furniture connectors, comprising a first plate and a second plate. The first plate has a wooden plug to conceal a disassembly hole. The first plate and the second plate are connected by a connector, which includes:

[0006] Lock head one, the lock head one has a slot, the lock head one is fixed to plate two by bolts;

[0007] The second lock head has a sliding groove inside and a locking block inside. The locking block is elastically connected to the inner wall of the second lock head by a spring. A crossbar is connected to the outer wall of the locking block, and the crossbar is slidably connected to the sliding groove.

[0008] Preferably, the lock head is rotatably connected to a rotating rod, the end of the rotating rod is provided with a horizontal groove, the outer wall of the rotating rod is connected to a rotating block, the rotating block is provided with a through groove, and the through groove is slidably connected to the horizontal rod.

[0009] Preferably, the plate has a groove, a metal cap is provided in the groove, and the metal cap has a threaded groove.

[0010] Preferably, the threaded groove is threadedly connected to a push rod, and the end of the push rod has a cross groove, so that the push rod can be fixed to the metal cap using a special tool.

[0011] Preferably, the second plate is provided with a second metal cap, which is fixed to the inner wall of the plate with glue. The second metal cap is provided with a second threaded groove, and the second threaded groove is threadedly connected to an expander.

[0012] Preferably, a guide rod is connected to one outer wall of the lock head.

[0013] Preferably, the lock head has two slots, and the slots correspond one-to-one with the guide rods.

[0014] This utility model provides a concealed locking mechanism for furniture connectors. It has the following advantages:

[0015] (1) The hidden locking mechanism of the furniture connector forms the main fixation through the mechanical locking of the card block and the card slot. At the same time, the top rod is inserted into the expansion device to make the expansion device elastically deform and tightly fit with the inner wall of the groove to generate huge static friction force to form auxiliary fixation. This dual fixation mechanism significantly improves the overall stability and shear resistance of the board connection and can effectively prevent the connection part from loosening or displacement.

[0016] (2) The furniture connector has a hidden locking mechanism. During assembly, simply align the guide rod with the slot and push the board. The automatic locking of the locking block and slot, as well as the cooperation of the expander and groove, will complete the quick connection. The cooperation of the guide rod and slot also ensures accurate positioning during the connection process and improves assembly efficiency. During disassembly, simply use a special tool to rotate the rotating rod to disengage the locking block from the slot, and then pull the board to complete the separation. The operation is simple and convenient for the installation, maintenance and transportation of the furniture. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the two-part three-dimensional cross-sectional structure of the plate material of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of a portion of the sheet metal of this utility model;

[0021] Figure 4 A schematic diagram of a three-dimensional cross-sectional structure of a portion of the sheet metal of this utility model. Figure 1 ;

[0022] Figure 5 This is a schematic diagram of the two-dimensional cross-sectional structure of the lock head of this utility model. Figure 1 ;

[0023] Figure 6 This is a schematic diagram of the two-dimensional cross-sectional structure of the lock head of this utility model. Figure 2 ;

[0024] Figure 7 A schematic diagram of a three-dimensional cross-sectional structure of a portion of the sheet metal of this utility model. Figure 2 .

[0025] Explanation of icon numbers:

[0026] 1. Board material one; 10. Cork; 11. Groove; 12. Metal cap one; 13. Threaded groove one; 14. Top rod; 15. Cross groove; 2. Board material two; 21. Metal cap two; 22. Threaded groove two; 23. Expansion device; 31. Lock head one; 311. Slot; 312. Guide rod; 32. Lock head two; 321. Slot; 322. Lock block; 323. Spring; 324. Crossbar; 325. Rotating block; 326. Through groove; 327. Rotating rod; 328. Horizontal groove; 329. Slide groove.

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1-7 This utility model proposes a concealed locking mechanism for furniture connectors, comprising a first plate 1 and a second plate 2. A wooden plug 10 is provided on the first plate 1, and the first plate 1 and the second plate 2 are connected by a connector.

[0030] In an embodiment of this utility model, in order to connect plate 1 and plate 2, the connecting component specifically includes a lock head 31, which has a slot 311. The lock head 31 is fixed to plate 2 by bolts. The lock head 32 has a sliding groove 329 inside and a locking block 322 inside. The locking block 322 is elastically connected to the inner wall of the lock head 322 by a spring 323. A crossbar 324 is connected to the outer wall of the locking block 322. The crossbar 324 is slidably connected to the sliding groove 329. The lock head 322 is rotatably connected to a rotating rod 327. A horizontal groove 328 is opened at the end of the rotating rod 327. A rotating block 325 is connected to the outer wall of the rotating rod 327. The rotating block 325 has a through groove 326, and the through groove 326 is slidably connected to the crossbar 324.

[0031] Furthermore, in order to improve the stability between plate 1 and plate 2, plate 1 is provided with a groove 11, a metal cap 12 is provided in the groove 11, the metal cap 12 is provided with a threaded groove 13, the threaded groove 13 is threaded to a push rod 14, the end of the push rod 14 is provided with a cross groove 15, and plate 2 is provided with a metal cap 21, the metal cap 21 is provided with a threaded groove 22, the threaded groove 22 is threaded to an expander 23.

[0032] Furthermore, a guide rod 312 is connected to the outer wall of the lock head 31, and a slot 321 is opened on the lock head 32. The slot 321 corresponds one-to-one with the guide rod 312. The cooperation between the guide rod 312 and the slot 321 ensures accurate positioning during the connection process, improving assembly efficiency and connection stability.

[0033] In this utility model, during use, the first lock head 31 and the second lock head 32 are firstly fixed to the corresponding positions of the second plate 2 and the first plate 1 respectively using bolts. Next, the guide rod 312 on the first lock head 31 is aligned with the slot 321 of the second lock head 32, and the first plate 1 is pushed closer to the second plate 2. When the first plate 1 is pushed a certain distance, the locking block 322 on the second lock head 32 contacts the locking groove 311 of the first lock head 31. The inclined surface of the groove 311 will squeeze the locking block 322, forcing the locking block 322 to retract inward. At the same time, the compression spring 323 undergoes elastic deformation. When the outer walls of the first plate 1 and the second plate 2 are completely fitted, the squeezing force of the groove 311 on the locking block 322 disappears, the spring 323 releases its elastic potential energy, pushing the locking block 322 to reset and engage with the groove 311, forming a mechanical lock, thereby completing the quick connection and fixation of the first plate 1 and the second plate 2.

[0034] As plate 1 approaches plate 2, the expander 23 on plate 1 simultaneously enters the groove 11 of plate 2, while the push rod 14 at the bottom of the groove 11 gradually inserts into the expander 23. Because the push rod 14 has a stepped design that is thicker at the bottom and thinner at the top, its bottom diameter is larger than its top diameter and also larger than the initial inner diameter of the expander 23. When plate 1 and the outer wall of plate 2 are completely in contact, the large-diameter section of the push rod 14 fully enters the expander 23, generating a radial expansion force on the inner wall of the expander 23, forcing the expander 23 to undergo elastic deformation and expand outwards. The expanded outer wall of the expander 23 fits tightly against the inner wall of the groove 11, generating a huge static friction force and forming an auxiliary fixing structure. This dual fixing mechanism, with the mechanical locking of the locking block 322 and the slot 311 combined with the interference fit between the expander 23 and the groove 11, significantly improves the overall stability and shear resistance of the plate connection, effectively preventing loosening or displacement of the connection points.

[0035] When it is necessary to disassemble the plate, insert a special tool into the horizontal groove 328 at the top of the rotating rod 327, rotate the rotating rod 327, and the rotating block 325 fixedly connected to it will rotate together. During the rotation of the rotating block 325, the through groove 326 on its edge will generate a lateral pushing force on the horizontal rod 324, forcing the horizontal rod 324 to drive the locking block 322 to retract inward, so that the locking block 322 is completely disengaged from the locking groove 311, and the mechanical locking of the first lock head 31 and the second lock head 32 is released.

[0036] At this point, pull plate 1 outward with force. The expander 23 moves synchronously with plate 1, gradually disengaging from the groove 11. The push rod 14 is pulled out from inside the expander 23, and the expander 23 returns to its initial state. Until the expander 23 is completely out of the groove 11, plate 1 and plate 2 are completely separated, completing the disassembly process.

[0037] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A concealed latch for furniture connectors, comprising a first plate (1) and a second plate (2), wherein a wooden plug (10) is provided on the first plate (1), and the first plate (1) and the second plate (2) are connected by a connector, characterized in that: The connector includes: Lock head one (31), the lock head one (31) has a slot (311), the lock head one (31) is fixed to plate two (2) by bolts; Lock head two (32), the lock head two (32) has a sliding groove (329) inside, the lock head two (32) has a locking block (322) inside, the locking block (322) is elastically connected to the inner wall of the lock head two (32) by a spring (323), the outer wall of the locking block (322) is connected to a crossbar (324), and the crossbar (324) is slidably connected to the sliding groove (329).

2. The concealed locking mechanism for furniture connectors according to claim 1, characterized in that: The lock head 2 (32) is rotatably connected to a rotating rod (327). The end of the rotating rod (327) is provided with a horizontal groove (328). The outer wall of the rotating rod (327) is connected to a rotating block (325). The rotating block (325) is provided with a through groove (326), and the through groove (326) is slidably connected to the crossbar (324).

3. The concealed locking mechanism for furniture connectors according to claim 1, characterized in that: The plate (1) has a groove (11), and a metal cap (12) is provided in the groove (11). The metal cap (12) has a threaded groove (13).

4. The concealed locking mechanism for furniture connectors according to claim 3, characterized in that: The threaded groove (13) is threadedly connected to a push rod (14), and the end of the push rod (14) is provided with a cross groove (15).

5. A concealed locking mechanism for furniture connectors according to claim 1, characterized in that: The plate 2 (2) is provided with a metal cap 2 (21), the metal cap 2 (21) is provided with a threaded groove 2 (22), and the threaded groove 2 (22) is threadedly connected to an expander (23).

6. A concealed locking mechanism for furniture connectors according to claim 1, characterized in that: A guide rod (312) is connected to the outer wall of the lock head (31).

7. A concealed locking mechanism for furniture connectors according to claim 6, characterized in that: The second lock head (32) has a slot (321), and the slot (321) corresponds one-to-one with the guide rod (312).

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