A concealed positioning and locking structure for a folding storage sofa

Abstract

This invention relates to the field of furniture structure technology and discloses a concealed positioning and locking structure for a folding and storage sofa. The structure includes a first mounting buckle and a second mounting buckle. A first fixing component is installed inside the first mounting buckle, and a second fixing component is installed inside the second mounting buckle. The first and second fixing components have identical structures. A connecting component is installed on one side of the second fixing component, and a storage groove is formed inside the second fixing component. A first fixing piece is fixedly connected inside the first mounting buckle, and a second fixing piece is fixedly connected inside the second mounting buckle. A snap-fit ​​component is installed on the upper surface of the first fixing component, and one side of the connecting component is installed inside the snap-fit ​​component. By setting a baffle and an L-shaped slide groove on one side of the rack and toothed groove, and allowing the locking post to pass over the baffle and enter the L-shaped slide groove during folding, the impact of exposed traditional folding sofa locks on the overall aesthetics and safety is reduced.

Description

Technical Field

[0001] This invention relates to the field of furniture structure technology, specifically to a hidden positioning and locking structure for a folding storage sofa. Background Technology

[0002] Folding sofas are a type of furniture that combines sitting and reclining functions with space utilization. They allow for switching between different usage modes through folding and unfolding, and are widely used in homes, apartments, hotels, and office / leisure spaces. To ensure the structural stability of folding sofas during use, appropriate positioning and locking mechanisms are usually installed to fix the unfolded angle or state of the sofa, preventing accidental rotation or structural loosening during use.

[0003] Most existing folding sofas use latch-type locks, exposed buckles, or mechanical locking components for positioning and locking. When the sofa is unfolded, the locking structure engages with corresponding locking parts to secure its position; when the sofa is folded, the locking structure releases and moves with the folding mechanism. Because this type of locking structure is usually located on the outside of the sofa or in the rotating connection area, its locking components remain exposed on the surface when folded, and some parts even extend into the external area during the folding motion, thus forming a noticeable protrusion.

[0004] However, in the process of realizing the technical solution of this application, the inventors of this application discovered that the positioning and locking structure of existing folding and storage sofas usually lacks a hidden storage mechanism in the folded and stored state, which causes the locking components to still be exposed outside the structure, thereby affecting the safety and structural stability of the locking structure in the folded and stored state. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a hidden positioning and locking structure for folding and storage sofas. This solves the problem that existing technologies lack a hidden storage mechanism, causing the locking components to remain exposed outside the structure, thus affecting the safety and structural stability of the locking structure in the folded storage state.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hidden positioning and locking structure for a folding storage sofa, comprising a mounting buckle one and a mounting buckle two. A fixing component one is installed inside the mounting buckle one, and a fixing component two is installed inside the mounting buckle two. The fixing components one and two have identical structures. A connecting component is installed on one side of the fixing component two. A storage groove is formed inside the fixing component two. A fixing piece one is fixedly connected inside the mounting buckle one, and a fixing piece two is fixedly connected inside the mounting buckle two. A rotating piece one is rotatably connected inside the fixing piece one, and a rotating piece two is rotatably connected inside the fixing piece two. A central shaft is installed between the rotating pieces one and two. A snap-fit ​​component is installed on the upper surface of the fixing component one, and one side of the connecting component is installed inside the snap-fit ​​component.

[0007] Preferably, the fixing component one includes a mounting piece, the outside of which is mounted inside the mounting buckle one, and an elastic metal sheet is fixedly connected to one side of the lower surface of the mounting piece.

[0008] Preferably, a stop block is installed on one side of the bottom end of the elastic metal sheet, and a balance plate is installed on the other side. The balance plate and the stop block are parallel, and the outside of the stop block is engaged with the inside of the mounting buckle.

[0009] Preferably, the connecting assembly includes a connecting rod, which is installed on the outside of the fixing assembly two, and a locking post is fixedly connected to the other side of the connecting rod.

[0010] Preferably, a spring is provided between the outside of the connecting rod and the fixing component two.

[0011] Preferably, the buckle assembly includes a lower shell, the lower surface of which is fixedly connected to the upper surface of the fixing assembly, a rack is fixedly connected to the upper surface of the lower shell, the rack has multiple toothed grooves inside, and a baffle is fixedly connected to one side of the lower shell.

[0012] Preferably, an L-shaped groove is provided between the lower shell and the L-shaped groove.

[0013] Preferably, a reset component is fixedly connected to the other side of the lower shell, and a limit component is fixedly connected to one side of the reset component. The lower surfaces of the reset component and the limit component are both fixedly connected to the upper surface of the fixing component.

[0014] Preferably, the reset assembly includes a fixed shell, a triangular block is slidably connected inside the fixed shell, a ramp is formed on the lower outer side of the triangular block, and a spring is provided between the triangular block and the fixed shell.

[0015] Preferably, the limiting component includes a card plate, and the card plate has a limiting groove 1 and a limiting groove 2 inside, and the limiting groove 1 and the limiting groove 2 are adjacent to each other.

[0016] This invention provides a concealed positioning and locking structure for a folding storage sofa. It offers the following advantages: 1. This invention provides a baffle and an L-shaped slide groove on one side of the rack and tooth groove, allowing the locking pin to pass over the baffle and enter the L-shaped slide groove during folding. This enables the positioning and locking structure to be hidden inside the structure when stored, thereby reducing the impact of exposed traditional folding sofa locks on the overall aesthetics and safety.

[0017] 2. This invention forms a linkage structure by setting a connecting rod, a locking post, and a spring, and uses the rotation of the mounting buckle to drive the locking post to move between the rack and the tooth groove, so that the sofa can automatically switch between positioning and locking states during unfolding and storage, thereby reducing the number of manual adjustment steps of the buckle and improving the convenience of the folding and conversion process.

[0018] 3. This invention, by setting a reset component consisting of a triangular block, a ramp, and a second spring, and combining it with a limiting component having a limiting groove one and a limiting groove two, enables the locking post to automatically disengage from the storage area and complete the limiting lock when switching from the storage state to the unfolded state, thereby improving the positioning reliability of the sofa after unfolding and reducing the occurrence of accidental folding or loosening during use. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial structural diagram of the rotating plate 2 of the present invention; Figure 3 This is a schematic diagram of a partial structure of the central axis of the present invention; Figure 4 This is a partial structural diagram of the fixing component of the present invention; Figure 5 This is a partial structural diagram of the connection component of the present invention; Figure 6 This is a schematic diagram of a partial tooth groove structure of the present invention; Figure 7 This is a partial structural diagram of the limiting component of the present invention; Figure 8 This is a partial structural diagram of the reset component of the present invention.

[0020] The components are as follows: 1. Mounting buckle one; 2. Mounting buckle two; 3. Fixing component one; 31. Mounting piece; 32. Elastic metal piece; 33. Balance piece; 34. Abutment block; 4. Fixing component two; 5. Connecting component; 51. Connecting rod; 52. Locking post; 53. Spring one; 6. Storage slot; 7. Fixing piece one; 8. Rotating piece one; 9. Rotating piece two; 10. Central shaft; 11. Fixing piece two; 12. Buckle assembly; 121. Lower shell; 122. Rack; 123. Gear groove; 124. Baffle; 125. L-shaped slide groove; 126. Reset assembly; 1261. Fixing shell; 1262. Triangular block; 1263. Ramp; 1264. Spring two; 127. Limiting component; 1271. Locking plate; 1272. Limiting groove one; 1273. Limiting groove two. Detailed Implementation

[0021] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] Please see the appendix Figure 1 -Appendix Figure 3 This invention provides a hidden positioning and locking structure for a folding storage sofa, including a mounting buckle 1 and a mounting buckle 2. Mounting buckle 1 has a fixing component 3 installed inside, and mounting buckle 2 has a fixing component 4 installed inside. Fixing components 3 and 4 have the same structure. A connecting component 5 is installed on one side of fixing component 4. A storage slot 6 is provided inside fixing component 4. A fixing piece 7 is fixedly connected inside mounting buckle 1, and a fixing piece 11 is fixedly connected inside mounting buckle 2. A rotating piece 8 is rotatably connected inside fixing piece 7, and a rotating piece 9 is rotatably connected inside fixing piece 11. A central shaft 10 is installed between rotating pieces 8 and 9. A buckle component 12 is installed on the upper surface of fixing component 3, and one side of the connecting component 5 is installed inside the buckle component 12.

[0023] Specifically, mounting buckle 1 and mounting buckle 2 form a rotating connection structure through fixing plate 1 7, fixing plate 2 11, rotating plate 1 8, rotating plate 2 9, and central shaft 10, allowing mounting buckle 2 2 to rotate relative to mounting buckle 1. Fixing component 1 3 and fixing component 2 4 are respectively installed inside mounting buckle 1 and mounting buckle 2, used to support and fix the overall structure. Connecting component 5 is installed on one side of fixing component 2 4, and one end of connecting component 5 extends into the buckle component 12. When mounting buckle 2 2 rotates, fixing component 2 4 moves synchronously and drives the connecting rod 51 in connecting component 5 to move, causing the locking post 52 at the front end of connecting rod 51 to move along the length of buckle component 12. During unfolding, the locking post 52 remains in contact with buckle component 12 under the elastic action of spring 1 53, thus entering the corresponding locking area according to the rotation position of mounting buckle 2 2; during storage, the locking post 52 moves with connecting rod 51 to the corresponding position in storage slot 6, so that connecting component 5 is in a hidden state. By coordinating the installation of buckle 1, buckle 2, connecting component 5, and snap fastener component 12, the sofa can simultaneously switch between positioning and locking states during unfolding and folding, thereby improving the stability of the sofa during folding and folding and reducing the impact of exposed locking structure on the overall aesthetics.

[0024] Please see the appendix Figure 4 The fixing component 3 includes a mounting plate 31. The outside of the mounting plate 31 is installed inside the mounting buckle 1. An elastic metal plate 32 is fixedly connected to one side of the lower surface of the mounting plate 31. A stop block 34 is installed on one side of the bottom end of the elastic metal plate 32, and a balance plate 33 is installed on the other side. The balance plate 33 and the stop block 34 are parallel, and the outside of the stop block 34 is snapped into the inside of the mounting buckle 1.

[0025] Specifically, the mounting plate 31 is installed inside the mounting buckle 1, serving as the mounting base for the fixing component 3 and providing support for the snap-fit ​​component 12. An elastic metal sheet 32 ​​is fixedly connected to one side of the lower surface of the mounting plate 31, and the elastic metal sheet 32 ​​can buffer and absorb the load on the mounting plate 31 using its own elastic deformation. A stop block 34 is disposed on one side of the elastic metal sheet 32 ​​and snapped into the mounting buckle 1, providing a stable support point for the elastic metal sheet 32 ​​during stress. A balance plate 33 is disposed on the other side of the elastic metal sheet 32 ​​and arranged parallel to the stop block 34, ensuring that the force on both sides of the elastic metal sheet 32 ​​remains balanced. When the mounting buckle 2 drives the connecting component 5 and the locking post 52 to move, the fixing component 3 can bear the force generated by the buckle component 12, and buffer the impact force generated during the movement through the elastic deformation of the elastic metal sheet 32. At the same time, the mounting piece 31 is stably supported by the cooperation of the abutment block 34 and the balance plate 33, thereby reducing the loosening, displacement or local force concentration of the mounting piece 31 during long-term unfolding and folding, and improving the stability of the internal structure of the mounting buckle 1 and the reliability of the positioning and locking process.

[0026] Please see the appendix Figure 5 The connecting component 5 includes a connecting rod 51, which is installed on the outside of the fixing component 2 4. A locking post 52 is fixedly connected to the other side of the connecting rod 51. A spring 53 is provided between the outside of the connecting rod 51 and the fixing component 2 4.

[0027] Specifically, the connecting rod 51 is installed on the outside of the fixing component 2 4 and moves synchronously with the movement of the fixing component 2 4. The locking pin 52 is fixedly connected to one end of the connecting rod 51 and is used to cooperate with the locking component 12. The spring 1 53 is disposed between the connecting rod 51 and the fixing component 2 4, so that the connecting rod 51 is always subjected to an elastic thrust toward the locking component 12.

[0028] When the mounting buckle 2 rotates, the fixing component 4 drives the connecting rod 51 to move synchronously. The connecting rod 51 further drives the locking post 52 to move along the inside of the buckle assembly 12. During folding, the locking post 52 slides along the surface of the rack 122 and enters the corresponding storage area under the action of the connecting rod 51. During unfolding, the spring 53 continuously pushes the connecting rod 51 towards the buckle assembly 12, so that the locking post 52 can automatically engage with the tooth groove 123, the reset component 126, and the limiting component 127. Through the cooperation of the connecting rod 51 and the locking post 52, the rotation of the mounting buckle 2 is converted into the linear guiding motion of the locking post 52. The spring 53 provides a continuous elastic preload, ensuring that the locking post 52 remains in contact with the buckle assembly 12 during movement. This reduces the possibility of disengagement or inaccurate positioning due to excessive gaps, and improves the locking reliability and movement stability of the sofa during unfolding, positioning, and folding.

[0029] Please see the appendix Figure 6 The snap-fit ​​assembly 12 includes a lower shell 121, the lower surface of which is fixedly connected to the upper surface of the fixing assembly 3. A rack 122 is fixedly connected to the upper surface of the lower shell 121. The rack 122 has multiple toothed grooves 123 inside. A baffle 124 is fixedly connected to one side of the lower shell 121. An L-shaped groove 125 is formed between the lower shell 121 and the L-shaped groove 125.

[0030] Specifically, the lower shell 121 is fixedly installed on the upper surface of the fixing component 3, and is used to install and support the rack 122, the baffle 124 and the L-shaped slide groove 125. The rack 122 is set on the upper surface of the lower shell 121, and multiple toothed grooves 123 are distributed at intervals along the length of the rack 122 for cooperating with the locking post 52.

[0031] When the mounting clip 2 moves the connecting rod 51, the locking post 52, under the action of the spring 53, remains pressed against the surface of the rack 122 and passes through multiple toothed grooves 123 along the rack 122. This allows the locking post 52 to enter different toothed grooves 123 according to the rotation angle of the mounting clip 2, achieving positional positioning in different unfolded states. A baffle 124 is located on one side of the lower shell 121. When the locking post 52 moves to the storage area, the baffle 124 guides the locking post 52, causing it to enter the L-shaped slide groove 125. The L-shaped slide groove 125 limits the movement trajectory of the locking post 52, keeping it in a predetermined position in the folded storage state and preventing it from detaching from the storage area. The coordinated arrangement of the rack 122, tooth groove 123, baffle 124 and L-shaped slide 125 enables the locking post 52 to move along a predetermined path during unfolding and folding, thereby realizing the sofa's multi-position positioning and hidden storage function, and reducing the possibility of accidental locking or detachment during folding.

[0032] Please see the appendix Figure 7 and Figure 8 The reset assembly 126 includes a fixed shell 1261, a triangular block 1262 is slidably connected inside the fixed shell 1261, a ramp 1263 is provided on the lower outer side of the triangular block 1262, and a spring 1264 is provided between the triangular block 1262 and the fixed shell 1261; the limiting assembly 127 includes a locking plate 1271, a limiting groove 1272 and a limiting groove 1273 are provided inside the locking plate 1271, and the limiting groove 1272 and the limiting groove 1273 are adjacent to each other.

[0033] Specifically, the fixing shell 1261 is installed on the upper surface of the fixing component 3, the triangular block 1262 is slidably disposed inside the fixing shell 1261, and the second spring 1264 is disposed between the triangular block 1262 and the fixing shell 1261 to provide a reset force to the triangular block 1262. The ramp 1263 is disposed on the lower outer side of the triangular block 1262 to contact and engage with the locking post 52. When the sofa switches from the folded state to the unfolded state, the locking post 52 moves along the L-shaped slide 125 to the position of the reset component 126 and contacts the ramp 1263. Under the pushing action of the locking post 52, the triangular block 1262 slides along the inside of the fixing shell 1261, while compressing the second spring 1264. After the locking post 52 passes the triangular block 1262, the second spring 1264 releases its elastic force to push the triangular block 1262 to reset, and the locking post 52 enters the corresponding area of ​​the locking plate 1271. Limiting groove 1272 and limiting groove 2 1273 are formed inside the locking plate 1271. When the sofa continues to unfold, the locking post 52 enters the limiting groove 1272, and the connecting rod 51 correspondingly enters the limiting groove 2 1273. The cooperation of limiting groove 1272 and limiting groove 2 1273 constrains the position of the locking post 52 and the connecting rod 51, thereby limiting the continued rotation of the mounting buckle 2. Through the cooperation of the reset component 126 and the limiting component 127, the locking post 52 can automatically switch between the folded state and the unfolded state, and form a stable limit after unfolding into place, thereby improving the locking reliability and usage stability of the sofa in the unfolded state.

[0034] Working principle: First, when the sofa switches from the folded state to the unfolded state, mounting buckle 1 and mounting buckle 2 form a rotating connection structure through fixing plate 1 7, rotating plate 1 8, rotating plate 2 9, and central axis 10. When the user rotates mounting buckle 2 outward, mounting buckle 2 rotates relative to mounting buckle 1 around the central axis 10. During the rotation of mounting buckle 2, it drives fixing component 2 4 to move synchronously. Fixing component 2 4 further drives the connecting rod 51 in connecting component 5 to move synchronously, so that the locking post 52 at the front end of the connecting rod 51 moves along the length direction of the buckle component 12. Spring 1 53 continuously provides elastic force to the locking post 52 towards the buckle component 12, so that the locking post 52 always remains in contact with the rack 122.

[0035] Secondly, when the sofa needs to be folded and stored, push the mounting buckle 2 to rotate in the storage direction. The mounting buckle 2 drives the connecting rod 51 to move synchronously. The connecting rod 51 drives the locking post 52 to pass through multiple toothed grooves 123 along the surface of the rack 122. When the locking post 52 moves to the position of the baffle 124, it passes over the baffle 124 and enters the L-shaped slide 125 under the action of the connecting rod 51. Then, the locking post 52 moves along the guide direction of the L-shaped slide 125 to the locking position, keeping the connecting rod 51 and the locking post 52 in a hidden storage state, thus completing the sofa folding.

[0036] Finally, when the sofa needs to be unfolded again, the second mounting buckle 2 is rotated in the opposite direction. The second mounting buckle 2 drives the connecting rod 51 to move towards the buckle assembly 12. At this time, the locking post 52 slides inside the L-shaped slide groove 125. When the locking post 52 moves to the position of the reset assembly 126, the locking post 52 first contacts the ramp 1263 on the lower side of the triangular block 1262 and exerts a squeezing force on the ramp 1263, causing the triangular block 1262 to slide inside the fixed shell 1261, while compressing the second spring 1264. After the locking post 52 passes the top of the triangular block 1262, the second spring 1264 releases its elasticity to push the triangular block 1262 to reset, and the locking post 52 will enter the internal area of ​​the locking plate 1271. Under the continuous push of the first spring 53, the locking post 52 climbs upward along the ramp of the triangular block 1262 and disengages from the area of ​​the locking plate 1271, and finally enters the corresponding tooth groove 123 or abuts against the upper surface of the rack 122, realizing the positioning and locking in the unfolded state.

[0037] Furthermore, when the sofa needs to be fully unfolded to form a flat structure, the mounting buckle 2 continues to rotate, and the locking post 52 moves to the position of the limiting component 127 and enters the limiting groove 1272. At the same time, the connecting rod 51 enters the limiting groove 2 1273. Through the dual limiting effect of the limiting groove 1272 and the limiting groove 2 1273, the position of the connecting rod 51 and the locking post 52 is constrained, thereby limiting the continued rotation of the mounting buckle 2 and keeping the sofa in a flat unfolded state.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A concealed positioning and locking structure for a folding storage sofa, comprising mounting buckle one (1) and mounting buckle two (2), characterized in that, The first mounting buckle (1) has a fixing component (3) installed inside, and the second mounting buckle (2) has a fixing component (4) installed inside. The first fixing component (3) and the second fixing component (4) have the same structure. A connecting component (5) is installed on one side of the second fixing component (4). A storage slot (6) is opened inside the second fixing component (4). The first mounting buckle (1) has a fixing piece (7) fixedly connected inside. The second mounting buckle (2) has a fixing piece (11) fixedly connected inside. The first fixing piece (7) has a rotating piece (8) rotatably connected inside. The second fixing piece (11) has a rotating piece (9) rotatably connected inside. A central shaft (10) is installed between the first rotating piece (8) and the second rotating piece (9). A buckle component (12) is installed on the upper surface of the first fixing component (3). One side of the connecting component (5) is installed inside the buckle component (12).

2. The concealed positioning and locking structure for a folding storage sofa according to claim 1, characterized in that, The fixing component 1 (3) includes a mounting piece (31), the outside of which is installed inside the mounting buckle 1 (1), and an elastic metal piece (32) is fixedly connected to one side of the lower surface of the mounting piece (31).

3. The concealed positioning and locking structure for a folding storage sofa according to claim 2, characterized in that, A stop block (34) is installed on one side of the bottom end of the elastic metal sheet (32), and a balance plate (33) is installed on the other side. The balance plate (33) and the stop block (34) are parallel, and the outside of the stop block (34) is snapped into the inside of the mounting buckle (1).

4. The concealed positioning and locking structure for a folding storage sofa according to claim 1, characterized in that, The connecting component (5) includes a connecting rod (51), which is installed outside the fixing component (4), and a locking post (52) is fixedly connected to the other side of the connecting rod (51).

5. The concealed positioning and locking structure for a folding storage sofa according to claim 4, characterized in that, A spring (53) is provided between the outside of the connecting rod (51) and the fixing component (4).

6. The concealed positioning and locking structure for a folding storage sofa according to claim 1, characterized in that, The buckle assembly (12) includes a lower shell (121), the lower surface of which is fixedly connected to the upper surface of the fixing assembly (3), and a rack (122) is fixedly connected to the upper surface of the lower shell (121). The rack (122) has multiple toothed grooves (123) inside, and a baffle (124) is fixedly connected to one side of the lower shell (121).

7. The concealed positioning and locking structure for a folding storage sofa according to claim 6, characterized in that, An L-shaped groove (125) is provided between the lower shell (121) and the L-shaped groove (125).

8. The concealed positioning and locking structure for a folding storage sofa according to claim 7, characterized in that, A reset assembly (126) is fixedly connected to the other side of the lower shell (121). A limit assembly (127) is fixedly connected to one side of the reset assembly (126). The lower surfaces of the reset assembly (126) and the limit assembly (127) are both fixedly connected to the upper surface of the fixing assembly (3).

9. The concealed positioning and locking structure for a folding storage sofa according to claim 8, characterized in that, The reset assembly (126) includes a fixed shell (1261), a triangular block (1262) is slidably connected inside the fixed shell (1261), a ramp (1263) is provided on the lower outer side of the triangular block (1262), and a spring (1264) is provided between the triangular block (1262) and the fixed shell (1261).

10. A concealed positioning and locking structure for a folding storage sofa according to claim 8, characterized in that, The limiting component (127) includes a card plate (1271), and the card plate (1271) has a limiting groove one (1272) and a limiting groove two (1273) inside, and the limiting groove one (1272) and the limiting groove two (1273) are adjacent to each other.

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