Hidden wall bed support foot silent transmission mechanism

Abstract

This utility model belongs to the field of furniture technology, and in particular to a concealed wall bed support leg silent transmission mechanism. It includes an automatic bed leg assembly. This automatic bed leg assembly achieves fully intelligent linkage between the bed frame legs and the bed frame's flipping mechanism. During bed frame raising and lowering operations, no additional action is required; the bed frame legs automatically and precisely retract synchronously. When the bed frame is folded up for storage, the power is smoothly transmitted through the coordinated action of the linkage mechanism and spring assembly, driving the bed frame legs to complete the entire rotation process at a certain angle before the bed frame is fully closed, avoiding collision and interference with the bed cabinet, and reliably retracting and hiding inside the bed cabinet. When the bed frame is lowered for use, the coordinated action of the linkage mechanism and spring assembly delays the movement of the automatic bed leg assembly before the bed frame opens to a certain angle, avoiding collision and interference with the bed cabinet. The operation is smooth and low-noise, and the flexible trigger design effectively avoids movement interference or jamming, significantly improving the convenience, safety, and automation of the wall bed.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, specifically to a silent transmission mechanism for a concealed wall bed support leg. Background Technology

[0002] Wall beds (also known as concealed beds or flip-up beds) are a type of furniture that can effectively save indoor space and are widely used in small apartments, hotels and other multifunctional places.

[0003] Currently, the folding and folding mechanisms of wall beds on the market have gradually become semi-automated or electric, for example, by using gas springs or motors to reduce the physical exertion required for users to operate the bed frame. However, for the crucial support legs (bed frame legs) of wall beds, the vast majority of existing products still rely entirely on manual operation. When the bed frame needs to be lowered into use, the user must first manually fold the support legs located on both sides of the bed frame to a vertical support position; conversely, before folding the bed frame back into the cabinet, the user must manually fold the support legs back to a parallel folding position with the bed frame. This cumbersome operation and low level of automation cause serious inconvenience to users.

[0004] Therefore, we propose a concealed wall bed support leg silent transmission mechanism to solve the above problems. Summary of the Invention

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a concealed wall bed support leg silent transmission mechanism, which solves the problems mentioned in the background art, such as the existing wall bed support legs relying entirely on manual operation and the support legs easily making noise during rotation.

[0006] (II) Technical Solution To achieve the above objectives, this utility model specifically adopts the following technical solution: A concealed wall bed support leg silent transmission mechanism includes an automatic bed leg assembly. The automatic bed leg assembly includes a bed frame leg, a front rack, and a long connecting rod. One end of the bed frame leg is provided with an arc-shaped toothed segment. One end of the front rack is provided with a chain pin assembly that meshes with the arc-shaped toothed segment, and the other end is connected to the long connecting rod through a riveting pin. The front rack is provided with a spring assembly that abuts against one end of the long connecting rod.

[0007] Furthermore, the end of the long connecting rod away from the front gear is bent to one side and hinged to a short connecting rod by a rivet.

[0008] Furthermore, one end of the front rack is provided with a constricted section that is movably connected to the long connecting rod, and both sides of the constricted section are provided with sliding grooves.

[0009] Furthermore, the rivet pin is disposed on one end of the long connecting rod extending into the constricted section, and the number of rivet pins inside is not less than two. The two ends of the rivet pin extend into the interior of two sliding grooves respectively and are provided with sliding long connecting rod pins that are slidably sleeved with the sliding grooves.

[0010] Furthermore, the chain pin assembly includes several chain pins, the pitch of two adjacent chain pins is adapted to the tooth pitch of the arc tooth segment, and limit grooves are provided on both sides of the front rack, the limit grooves being located between the chain pin assembly and the spring assembly.

[0011] Furthermore, the spring assembly includes a spring bracket with both ends fixed inside the front rack by pull studs, a sliding rod passing through the inside of the spring bracket, and a spring located inside the spring bracket and a drive pin located at one end of the spring are sleeved on the sliding rod.

[0012] Furthermore, a silent rotating sleeve is provided inside the arc-shaped toothed section, and a bed leg extension rod is installed at the end of the bed frame leg away from the arc-shaped toothed section by a rivet pin.

[0013] A wall bed includes a bed cabinet, a bed frame, and a concealed wall bed support leg silent transmission mechanism. The automatic bed leg assembly is located inside both sides of the bed frame. The short connecting rod of the automatic bed leg assembly is linked with the wall bed flipping assembly located inside the bed cabinet, so that the bed frame legs can be automatically retracted during the upward flipping process and automatically unfolded when the bed frame is lowered for use.

[0014] Furthermore, both sides of the bed frame are provided with bed ribs, the automatic bed leg assembly is located inside the bed ribs, one end of the bed frame leg is rotatably located inside one end of the bed rib via a silent rotating sleeve, a limiting pin is fixedly inserted inside the bed rib and movably sleeved with a limiting groove, and a hidden pin located above the long connecting rod is also inserted inside the bed rib. One end of the bed frame is provided with a notch to allow the bed frame legs to flip over, and the other end is provided with a through hole to allow the short connecting rod to pass through. The notch and the through hole are respectively provided with a notch silent sleeve and a through hole silent sleeve.

[0015] Furthermore, the wall bed flipping assembly includes an outer mounting plate disposed on both sides of the inner wall of the bed cabinet and an inner mounting plate disposed on the bed frame. The inner mounting plate is rotatably connected to the outer mounting plate via a central axis of a rotating shaft. One side of the outer mounting plate is provided with a tie rod rivet that is movably hinged to one end of a short connecting rod.

[0016] (III) Beneficial Effects Compared with the prior art, this utility model provides a concealed wall bed support leg silent transmission mechanism, which has the following beneficial effects: This invention achieves fully intelligent linkage between the bed frame legs and the bed frame flipping through an automatic bed leg assembly. During bed frame raising and lowering operations, no additional action is required; the bed frame legs automatically and precisely retract and extend synchronously. When the bed frame is folded up for storage, the power is smoothly transmitted through the coordinated action of the linkage mechanism and spring assembly, driving the bed frame legs to complete the entire rotation process at a certain angle before the bed frame is fully closed, avoiding collision and interference with the bed cabinet, and reliably retracting and hiding inside the bed cabinet. When the bed frame is lowered for use, the coordinated action of the linkage mechanism and spring assembly delays the movement of the automatic bed leg assembly before the bed frame opens to a certain angle, avoiding collision and interference with the bed cabinet. The operation is smooth and low-noise, and the flexible trigger design effectively avoids movement interference or jamming, significantly improving the convenience, safety, and automation of the wall bed. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the automatic bed leg assembly of this utility model; Figure 2 This is a schematic diagram of the bed frame leg structure of this utility model; Figure 3 This is an exploded view of the automatic bed leg assembly structure of this utility model; Figure 4 This is a schematic diagram of the spring assembly structure of this utility model; Figure 5 This is a schematic diagram of the bed frame of this utility model in the open state; Figure 6 This is a partial sectional view of the bed frame of this utility model in its open state; Figure 7 This is a schematic diagram of the bed frame structure of this utility model; Figure 8 This is a schematic diagram of the automatic bed leg assembly of this utility model in the separated state from the bed frame; Figure 9 This is a schematic diagram of the bed frame structure in its stowed state. Figure 10 This is a partial sectional view of the bed frame of this utility model in its stored state; Figure 11 This is a schematic diagram of the automatic bed leg assembly of this utility model in its stowed-in state with the bed frame; Figure 12 for Figure 11 Enlarged view of the structure at point A in the middle; Figure 13 for Figure 11 Enlarged view of the structure at point B.

[0018] In the diagram: 1. Automatic bed leg assembly; 11. Bed frame leg; 111. Arc toothed section; 112. Silent rotating sleeve; 113. Riveting pin; 12. Front rack; 121. Recessed section; 122. Slide groove; 123. Limiting groove; 13. Long connecting rod; 14. Chain pin assembly; 15. Riveting pin; 151. Sliding long connecting rod pin; 16. Spring assembly; 161. Pull rivet; 162. Spring bracket; 163. Sliding rod; 164. Spring; 165. Transmission pin; 17. Short connecting rod; 18. Bed leg extension rod; 2. Bed cabinet; 3. Bed frame; 31. Bed side; 32. Limiting pin; 33. Concealed pin; 34. Notched silent sleeve; 35. Through hole silent sleeve; 4. Wall bed flip assembly; 41. Outer mounting plate; 42. Inner mounting plate; 43. Rotating shaft center shaft; 44. Pull rod rivet. 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. 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.

[0020] Example like Figure 1-13 As shown in the figure, a hidden wall bed support leg silent transmission mechanism proposed in one embodiment of the present invention includes an automatic bed leg assembly 1. The automatic bed leg assembly 1 includes a bed frame leg 11, a front rack 12 and a long connecting rod 13. One end of the bed frame leg 11 is provided with an arc tooth segment 111. One end of the front rack 12 is provided with a chain pin assembly 14 that meshes with the arc tooth segment 111, and the other end is connected to the long connecting rod 13 through a riveting pin 15. The front rack 12 is provided with a spring assembly 16 that abuts against one end of the long connecting rod 13.

[0021] The arc-shaped toothed segment 111 of the bed frame leg 11 and the chain pin assembly 14 at one end of the front rack 12 form a meshing transmission pair. The long connecting rod 13 serves as a power transmission element, with one end linked to the front rack 12 via a rivet pin 15, and the other end receiving external driving force. When the long connecting rod 13 is pushed or pulled, the force during the pushing process is transmitted to the front rack 12 through the spring assembly 16, and the force during the pulling process is transmitted to the front rack 12 through the rivet pin 15, thereby driving the chain pin assembly 14 to rotate the arc-shaped toothed segment 111 and the bed frame leg 11, realizing the folding or unfolding. The spring assembly 16 cooperates with the slide groove 122 and the interior of the slide groove 122. The sliding long connecting pin 151 of the 22 sliding sleeve allows the bed frame 3 to move synchronously with the bed frame 3 when it closes upwards, so that the bed frame legs 11 can close at a certain angle before the bed frame 3 is fully closed without colliding with the top plate of the bed cabinet 2. Correspondingly, when the bed frame 3 opens downwards, the movement of the bed frame legs 11 is delayed relative to the bed frame 3, so that the bed frame legs 11 are pulled by the front rack 12 after the bed frame 3 opens at a certain angle (the rivet pin 15 and the slide groove 122 on the sliding long connecting pin 151 are stopped near the end of the long connecting rod 13), thus avoiding collision with the top plate of the bed cabinet 2. It can also provide a buffer inside the front rack 12 to absorb the impact at the beginning of the movement.

[0022] The flipping motion of the bed frame 3 is automatically converted into the retraction and extension motion of the bed frame legs 11. The introduction of the spring assembly 16, in conjunction with the slide groove 122 and the sliding long connecting rod pin 151 that slides and engages with the slide groove 122, allows the bed frame 3 to close upwards in sync with the bed frame 3. This ensures that the bed frame legs 11 retract at a certain angle before the bed frame 3 is fully closed, preventing them from colliding with the top panel of the bed cabinet 2. Similarly, when the bed frame 3 opens downwards, the movement is delayed relative to the bed frame 3. This allows the bed frame legs 11 to pull the front rack 12 after the bed frame 3 has opened to a certain angle (where the rivet pin 15 on the sliding long connecting rod pin 151 and the slide groove 122 near the long connecting rod 13 abut), thus avoiding collisions with the top panel of the bed cabinet 2. The front rack 12 also provides a buffer to absorb the impact at the beginning of the movement, achieving flexible triggering and buffering of the movement. This effectively prevents jamming caused by movement interference, ensuring a smooth, quiet, and reliable retraction and extension process.

[0023] like Figure 1-13 As shown, in some embodiments, the end of the long connecting rod 13 away from the front toothed rod is bent to one side and connected to a short connecting rod 17 by a rivet.

[0024] The bent portion of the long link 13 serves as a steering node, forming a hinge with the short link 17 via a rivet. This hinge point converts the linear motion of the long link 13 into the swing motion of the short link 17, thereby effectively transmitting the motion from the wall bed tilting assembly 4 to the automatic bed leg assembly 1.

[0025] The long connecting rod 13 is bent at the end and hinged to the short connecting rod 17. This design optimizes the force transmission path, allowing the short connecting rod 17 to form a more reasonable connection angle with the wall bed flipping assembly 4 inside the bed cabinet 2. At the same time, the transmission components are concentrated in the middle of the bed frame 31, saving internal space and making the structure more compact.

[0026] like Figure 1-13 As shown, in some embodiments, one end of the front rack 12 is provided with a constricted section 121 that is movably connected to the long connecting rod 13, and both sides of the constricted section 121 are provided with sliding grooves 122.

[0027] The constricted section 121 serves as a guide sleeve for the front rack 12, with one end of the long connecting rod 13 extending into it. The sliding grooves 122 on both sides cooperate with the sliding long connecting rod pin 151 installed at the end of the long connecting rod 13, allowing the long connecting rod 13 to slide smoothly along a specific trajectory within the constricted section 121 while preventing it from coming out.

[0028] The constricted section 121 at one end of the front rack 12 and the sliding grooves 122 on both sides provide precise guidance and accommodation space for the end of the long connecting rod 13. The sliding grooves 122 cooperate with the subsequent sliding long connecting rod pins 151 to constrain the complex movement of the long connecting rod 13 into stable linear sliding, ensuring the accuracy of transmission.

[0029] like Figure 1-13 As shown, in some embodiments, the rivet pin 15 is disposed on one end of the long connecting rod 13 extending into the constricted section 121, and the number of rivet pins 15 inside is not less than two. The two ends of the rivet pin 15 extend into the interior of two sliding grooves 122 respectively and are provided with sliding long connecting rod pins 151 that are slidably sleeved with the sliding grooves 122.

[0030] The rivet pin 15 fixes the long connecting rod 13 and the front rack 12 radially relative to each other, while the sliding long connecting rod pins 151 at both ends are embedded in the slide grooves 122 of the front rack 12. When the long connecting rod 13 moves, the sliding long connecting rod pins 151 roll or slide along the slide grooves 122, transmitting the driving force to the front rack 12. At the same time, the length of the slide grooves 122 limits the relative movement stroke between the long connecting rod 13 and the front rack 12.

[0031] The combination design of the rivet pin 15 and the sliding long connecting rod pin 151 ensures smooth movement and reduces wear and noise.

[0032] like Figure 1-13 As shown, in some embodiments, the chain pin group 14 includes a plurality of chain pins, the pitch of two adjacent chain pins is adapted to the pitch of the arc tooth segment 111, and the front rack 12 is provided with limiting grooves 123 on both sides, the limiting grooves 123 being located between the chain pin group 14 and the spring assembly 16.

[0033] The chain pin assembly 14 simulates the meshing method of the chain. Multiple chain pins mesh sequentially with the tooth grooves of the arc tooth segment 111 to achieve power transmission. The limiting groove 123 on the front rack 12 and the limiting pin 32 fixed on the bed 31 form a sliding pair, which guides and limits the movement of the front rack 12.

[0034] Multiple chain pins mesh with the arc-shaped tooth segment 111, increasing the meshing area. Compared with single tooth meshing, the transmission is smoother, the force is more uniform, the noise is lower, and it can withstand a larger load. The limiting groove 123 cooperates with the external limiting pin 32 to ensure that the front rack 12 only moves on the preset path, preventing it from twisting or deviating.

[0035] like Figure 1-13 As shown, in some embodiments, the spring assembly 16 includes a spring bracket 162 with both ends fixed inside the front rack 12 by pull pins 161. A sliding rod 163 passes through the inside of the spring bracket 162. A spring 164 located inside the spring bracket 162 and a drive pin 165 located at one end of the spring 164 are sleeved on the sliding rod 163.

[0036] The spring bracket 162 is fixed inside the front rack 12. When the end of the long connecting rod 13 pushes the sliding rod 163, the sliding rod 163 compresses the spring 164 through the transmission pin 165. The spring 164 absorbs and stores energy during the compression process. When the pressure reaches a certain level or the motion conditions are mature, the spring 164 forces the front rack 12 to start moving. The pull pin 161 is used to fix the spring bracket 162.

[0037] The core function of the spring assembly 16 is to achieve "compliant triggering". In the initial stage of the bed frame leg 11 unfolding or retracting, the spring 164 is first compressed to store energy. After overcoming the dead point or external resistance, the energy is quickly released to ensure the completion of the action. This effectively avoids the phenomenon of the bed frame leg 11 moving first before the bed frame 3 is raised, which would cause the bed frame 3 to get stuck on the ground.

[0038] like Figure 1-13 As shown, in some embodiments, a silent rotating sleeve 112 is movably provided inside the arc toothed segment 111, and a bed leg extension rod 18 is installed at the end of the bed frame leg 11 away from the arc toothed segment 111 via a rivet pin 113.

[0039] A silent rotating sleeve 112 (such as an engineering plastic bushing) is fitted onto the rotating shaft inside the bed frame 31, providing rotational support with low frictional resistance. The bed leg extension rod 18 is adjustablely connected to the end of the bed frame leg 11 via a rivet pin 113. The double-layered bed frame leg 11 is made of inner and outer materials, forming a box or tubular structure with high bending strength.

[0040] The silent swivel sleeve 112 reduces friction and noise when the bed frame legs 11 rotate. The bed frame legs 11 adopt a double-layer structure, which significantly enhances their rigidity and strength, ensuring stable and reliable support, while reducing manufacturing costs.

[0041] A wall bed includes a bed cabinet 2, a bed frame 3, and a hidden wall bed support leg silent transmission mechanism. The automatic bed leg assembly 1 is disposed inside both sides of the bed frame 3. The short connecting rod 17 of the automatic bed leg assembly 1 is linked with the wall bed flipping assembly 4 disposed inside the bed cabinet 2, so that the bed frame 3 can automatically retract the bed frame legs 11 during the upward flipping process and automatically unfold the bed frame legs 11 when it is lowered for use.

[0042] The automatic bed leg assembly 1 is installed inside the bed frame 3. Its short connecting rod 17 is linked with the wall bed flipping assembly 4 (such as the pull rod rivet 44) fixed on the bed cabinet 2. When the bed frame 3 flips around the rotation center axis, the bed frame 3 moves relative to the bed cabinet 2, forcing the short connecting rod 17 to move. Then, through a set of transmission chains such as the long connecting rod 13 and the front rack 12, the rotation of the bed frame leg 11 is finally controlled.

[0043] The silent transmission mechanism of the wall bed support legs is integrated into the wall bed, realizing fully automated linkage between the bed frame legs 11 and the bed frame 3. Users only need to operate the bed frame 3 to raise or lower, and the bed frame legs 11 can be synchronously and accurately folded up or unfolded, which greatly improves the intelligence and ease of use of the product.

[0044] like Figure 1-13 As shown, in some embodiments, bed frames 3 are provided on both sides of the bed frame 3, the automatic bed leg assembly 1 is disposed inside the bed frame 31, one end of the bed frame leg 11 is rotatably disposed inside one end of the bed frame 31 via a silent rotating sleeve 112, a limiting pin 32 is fixedly inserted inside the bed frame 31 and is movably sleeved with the limiting groove 123, and a hidden pin 33 located above the long connecting rod 13 is also inserted inside the bed frame 31; One end of the bed frame 31 is provided with a notch for avoiding the flipping of the bed frame leg 11, and the other end is provided with a through hole for avoiding the short connecting rod 17. The notch and the through hole are respectively provided with a notch silent sleeve 34 and a through hole silent sleeve 35.

[0045] The bed frame 31 serves as the mounting carrier and protective housing for the automatic bed leg assembly 1. The limiting pin 32 passes through the bed frame 31 and is inserted into the limiting groove 123 of the front rack 12 to guide its movement. The concealed pin 33 restricts the vertical freedom of the long connecting rod 13. The notch is used to avoid the bed frame leg 11 when it flips over. The through hole is used for the short connecting rod 17 to extend and connect with the external components. The notch silent sleeve 34 and the through hole silent sleeve 35 play a protective and noise reduction role.

[0046] All transmission components of the automatic bed leg assembly 1 are concealed within the bed frame 31, resulting in a neat and safe appearance. The setting of limit pins 32 and concealed pins 33 ensures the accuracy of the movement trajectory of the internal components. The silent sleeves at the notches and through holes not only prevent movement interference but also reduce operating noise, thereby improving the overall quality.

[0047] like Figure 1-13 As shown, in some embodiments, the wall bed flipping assembly 4 includes an outer mounting plate 41 disposed on both sides of the inner wall of the bed cabinet 2 and an inner mounting plate 42 disposed on the bed frame 31. The inner mounting plate 42 is rotatably connected to the outer mounting plate 41 via a central shaft 43 of a rotating shaft. A pull rod rivet 44 is provided on one side of the outer mounting plate 41 and is movably hinged to one end of the short connecting rod 17.

[0048] The outer mounting plate 41 of the wall bed flipping assembly 4 is fixed to the bed cabinet 2, the inner mounting plate 42 rotates with the bed frame 3, and the tie rod rivet 44 is eccentrically mounted on the outer mounting plate 41. When the bed frame 3 flips, the short connecting rod 17 that moves with the bed frame 3 moves relative to the fixed tie rod rivet 44, thereby generating a force to drive the automatic bed leg assembly 1.

[0049] The tie rod rivet 44 serves as the driving point, and its eccentric setting cleverly transforms the rotational motion of the bed frame 3 into a linear push-pull motion on the short connecting rod 17, resulting in a clear and efficient power transmission path.

[0050] When in use, if the bed frame 3 needs to be folded up and stored inside the bed cabinet 2, the bed frame 3 is flipped up. The bed frame 3 drives the bed frame 31 to rotate around the central axis of rotation. The short connecting rod 17 of the automatic bed leg assembly 1 moves along with the bed frame 3 and comes into contact with the pull rod rivet 44 fixed on the outer mounting plate 41 of the bed cabinet 2. Since the pull rod rivet 44 is fixed in position, it generates a reaction force on the short connecting rod 17. This force is transmitted through the hinge point, thereby pushing the long connecting rod 13 in the opposite direction to move into the automatic bed leg assembly 1. The end of the long connecting rod 13 that extends into the constricted section 121 of the front rack 12 first abuts against the sliding rod of the spring assembly 16. 163. The sliding rod 163 compresses the spring 164 through the transmission pin 165. This process is the flexible triggering stage. As the bed frame 3 continues to flip up, the spring 164 is further compressed. When the force is large enough, the spring bracket 162 begins to drive the front rack 12 to move as a whole. The chain pin group 14 at one end of the front rack 12 then drives the arc tooth segment 111 integrated with the bed frame leg 11 to rotate, so that the bed frame leg 11 flips up and retracts. This allows the bed frame leg 11 to retract at a certain angle before the bed frame 3 is completely closed without colliding with the top plate of the bed cabinet 2. Finally, when the bed frame 3 is completely stored in the bed cabinet 2, it is completely hidden.

[0051] When the bed frame 3 needs to be folded out from inside the bed cabinet 2, the bed frame 3 is folded down. The bed frame 31 drives the short connecting rod 17 of the automatic bed leg assembly 1 to pull the pull rod rivet 44, causing the short connecting rod 17 to swing and pull the long connecting rod 13. The pressure of the long connecting rod 13 on the spring assembly 16 is released, and the spring 164 begins to rebound. In the initial stage, the rebound force of the spring 164 is mainly used to push the front rack 12 to return to its original position. This force cannot directly drive the bed frame legs 11 to unfold, so that the bed frame legs 11 first open a certain angle in the bed frame 3 (the rivet pin 15 on the sliding long connecting rod pin 151 and the slide groove 122 are close together). After the long connecting rod 13 is stopped at one end, the front rack 12 is pulled to link the bed frame leg 11 to avoid collision with the top plate of the bed cabinet 2. The long connecting rod 13 drives the sliding long connecting rod pin 151 to slide in the slide groove 122 of the front rack 12 through the rivet pin 15. When the sliding long connecting rod pin 151 moves to the end of the slide groove 122, the rivet pin 15 will directly pull the front rack 12 to move in a straight line. The front rack 12 engages the arc tooth segment 111 through the chain pin group 14, thereby reliably driving the bed frame leg 11 to rotate downward to the vertical support state, providing stable support for the unfolded bed frame 3.

[0052] In summary, the automatic bed leg assembly 1 achieves fully intelligent linkage between the bed frame legs 11 and the bed frame 3 during the flipping process. When the bed frame 3 is raised or lowered, no additional action is required; the bed frame legs 11 automatically and precisely retract and extend synchronously. When the bed frame 3 is folded up for storage, the power is smoothly transmitted through the coordinated action of the linkage mechanism and the spring assembly 16, driving the bed frame legs 11 to complete the entire rotation process at a certain angle before the bed frame 3 is fully closed, avoiding collision and interference with the bed cabinet 2, and reliably retracting and hiding inside the bed cabinet 2. When the bed frame 3 is lowered for use, the coordinated action of the linkage mechanism and the spring assembly 16 delays the action of the automatic bed leg assembly 1 before the bed frame 3 is opened to a certain angle, avoiding collision and interference with the bed cabinet 2, automatically triggering and steadily extending the bed frame legs 11 to the support state. The operation is smooth and the noise is low. Furthermore, the flexible trigger design effectively avoids movement interference or jamming, significantly improving the convenience, safety, and automation of the wall bed.

[0053] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hidden wall bed support foot silent drive mechanism, characterized by: The automatic bed leg assembly (1) includes a bed frame leg (11), a front rack (12), and a long connecting rod (13). One end of the bed frame leg (11) is provided with an arc tooth segment (111). One end of the front rack (12) is provided with a chain pin assembly (14) that meshes with the arc tooth segment (111). The other end is connected to the long connecting rod (13) by a riveting pin (15). The front rack (12) is provided with a spring assembly (16) that abuts against one end of the long connecting rod (13).

2. A hidden wall bed support foot silent drive mechanism according to claim 1, characterized in that: The long connecting rod (13) is bent to one side at the end away from the front toothed rod and is hinged to a short connecting rod (17) by a rivet.

3. A hidden wall bed support leg silent drive mechanism as claimed in claim 1, wherein: One end of the front rack (12) is provided with a constricted section (121) that is movably connected to the long connecting rod (13), and both sides of the constricted section (121) are provided with sliding grooves (122).

4. A hidden wall bed support leg silent drive mechanism as claimed in claim 1, wherein: The rivet pin (15) is located on one end of the long connecting rod (13) extending into the constricted section (121), and there are no less than two rivet pins (15). The two ends of the rivet pin (15) extend into the interior of two sliding grooves (122) and are provided with sliding long connecting rod pins (151) that are slidably sleeved with the sliding grooves (122).

5. A hidden wall bed support foot silent drive mechanism as claimed in claim 1, wherein: The chain pin group (14) includes several chain pins. The pitch of two adjacent chain pins is adapted to the pitch of the arc tooth segment (111). Limiting grooves (123) are provided on both sides of the front rack (12). The limiting grooves (123) are located between the chain pin group (14) and the spring assembly (16).

6. A hidden wall bed support foot silent drive mechanism as claimed in claim 1, wherein: The spring assembly (16) includes a spring bracket (162) with both ends fixed inside the front rack (12) by pull pins (161). A sliding rod (163) is provided inside the spring bracket (162). A spring (164) located inside the spring bracket (162) and a drive pin (165) located at one end of the spring (164) are sleeved on the sliding rod (163).

7. A hidden wall bed support foot silent drive mechanism as claimed in claim 1, wherein: The inner part of the arc toothed segment (111) is equipped with a silent rotating sleeve (112), and the end of the bed frame leg (11) away from the arc toothed segment (111) is equipped with a bed leg extension rod (18) by a rivet pin (113).

8. A wall bed characterized by: The device includes a bed cabinet (2), a bed frame (3), and a silent transmission mechanism for the hidden wall bed support legs as described in any one of claims 1-7. The automatic bed leg assembly (1) is located inside both sides of the bed frame (3). The short connecting rod (17) of the automatic bed leg assembly (1) is linked with the wall bed flipping assembly (4) located inside the bed cabinet (2), so that the bed frame (3) can automatically retract the bed frame legs (11) during the flipping process and automatically unfold the bed frame legs (11) when it is lowered for use.

9. A wall bed as claimed in claim 8, wherein: Both sides of the bed frame (3) are provided with bed rails (31), the automatic bed leg assembly (1) is located inside the bed rail (31), one end of the bed frame leg (11) is rotatably located inside one end of the bed rail (31) through a silent rotating sleeve (112), a limiting pin (32) is fixedly inserted inside the bed rail (31) and movably connected to the limiting groove (123), and a hidden pin (33) located above the long connecting rod (13) is also inserted inside the bed rail (31). One end of the bed frame (31) is provided with a notch for avoiding the flipping of the bed frame leg (11), and the other end is provided with a through hole for avoiding the short connecting rod (17). The notch and the through hole are respectively provided with a notch silent sleeve (34) and a through hole silent sleeve (35).

10. A wall bed as claimed in claim 8, wherein: The wall bed flipping assembly (4) includes an outer mounting plate (41) on both sides of the inner wall of the bed cabinet (2) and an inner mounting plate (42) on the bed frame (31). The inner mounting plate (42) is rotatably connected to the outer mounting plate (41) through a rotating shaft center axis (43). One side of the outer mounting plate (41) is provided with a tie rod rivet (44) that is movably hinged to one end of a short connecting rod (17).

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