A smart bed with anti-pinch function
By combining the lifting arm assembly and limit switch, the system accurately detects foreign object clamping, solving the problem of users or pets being pinched or foreign objects being trapped in smart beds, and achieving a highly efficient and low-cost anti-pinch effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- AIMENG SMART HOME (ZHUHAI) CO LTD
- Filing Date
- 2025-09-17
- Publication Date
- 2026-07-31
AI Technical Summary
Existing smart beds pose a risk of users or pets getting pinched or foreign objects getting caught in the gap between the movable bed board and the bed frame. Furthermore, existing anti-pinch measures are costly, inconvenient to install, and have poor anti-pinch effectiveness.
It adopts a combination structure of lifting swing arm assembly, movable linkage, support component, elastic reset component and limit switch. The limit switch provides feedback on the foreign object clamping signal, which is accurate and low cost.
It achieves efficient anti-pinch protection, preventing users or pets from being pinched. It has a simple structure and low cost, and is unaffected by surrounding objects or light.
Smart Images
Figure CN224572468U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of furniture technology, specifically to an anti-pinch smart bed. Background Technology
[0002] Smart beds can raise and lower the bed board to adapt to the physiological needs and comfort preferences of people in different scenarios. However, during the process of the movable bed board returning to a flat position from a raised state, there is a risk of injury to users or pets due to the gap between the movable bed board and the bed frame. There is also a possibility that hard objects or other foreign objects may become trapped in the gap, causing damage to the movable bed board, the bed frame, or the motor that drives the movable bed board. Most existing smart beds use cushioning materials in the gap between the movable bed board and the bed frame, safety gaps between the movable bed board and the bed frame, or sensor detection and functional algorithms to prevent users, pets, or foreign objects from being trapped in the gap. However, these methods are costly, inconvenient to install, and have poor anti-pinch effects. Utility Model Content
[0003] The purpose of this utility model is to address the shortcomings and deficiencies of the existing technology by providing an anti-pinch smart bed with advantages such as good anti-pinch effect, simple structure and cost saving.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is: an anti-pinch smart bed, comprising: bedstead; A movable bed board is movably mounted on the bed frame; A lifting arm assembly is rotatably mounted on the bed frame on one side and located under the movable bed board; the lifting arm assembly is used to push the movable bed board to lift. A movable link is assembled on the lifting arm assembly; one end of the movable link is provided with a trigger part, and the other end is provided with a mounting post; A support member is assembled on the mounting column; one side of the support member abuts against the movable bed board; An elastic reset element, one end of which is connected to the trigger unit and the other end of which is connected to the lifting arm assembly; and A limit switch is mounted on the lifting arm assembly and on the side near the trigger portion; When the support member is subjected to pressure from the movable bed board, the triggering part triggers the limit switch, and the elastic reset member is in a stretched state; When the support member is not subjected to pressure from the movable bed board, the triggering part does not trigger the limit switch, and the elastic reset member is in a retracted state.
[0005] The present invention further provides that the movable link is assembled on the lifting arm assembly by a first fastener; the assembly point of the movable link and the first fastener is located between the trigger part and the mounting column, and serves as a fulcrum for the movement of the mounting column and the trigger part.
[0006] The present invention is further provided that one end of the elastic reset member is connected to one side of the lifting arm assembly by a second fastener; The limit switch is provided on the lifting arm assembly along the stretching direction of the elastic reset member; the limit switch is located on the opposite side of the lifting arm assembly where the second fastener is provided.
[0007] The present invention further comprises: two swing arm rods and a connecting rod disposed between the two swing arm rods and used to connect the two swing arm rods; one end of each swing arm rod is rotatably mounted on the bed frame and the other end is set as a free end; The movable connecting rod, one end of the elastic reset member, and the limit switch are all mounted on the swing arm.
[0008] The present invention further includes a groove at the free end of the swing arm for one end of the mounting column to pass through; the support member is assembled at the end of the mounting column through the groove.
[0009] In a further embodiment of this invention, the support member is configured as a roller.
[0010] The present invention further includes, in addition to, a fixed bed board mounted on the bed frame; one end of the movable bed board is hinged to one side of the fixed bed board.
[0011] The present invention further includes, in addition to, a pushing device that is hinged at one end to the bed frame and at the output end to the connecting rod; the pushing device is used to push the connecting rod and the swing arm to rotate so as to lift the movable bed board.
[0012] The present invention further includes, in addition to, a control device; the control device, the limit switch, and the pushing device are electrically connected.
[0013] The beneficial effects of this utility model after adopting the above technical solution are as follows: In this utility model, during the descent of the movable bed board, the lifting arm assembly first drives the movable connecting rod and the support to descend, and the movable bed board follows the descent after losing the support of the support. During this process, the support is always subjected to pressure from the movable bed board. Therefore, the pressure of the movable bed board on the support will only decrease, or even disappear completely, when a foreign object is trapped between the movable bed board and the bed frame. When the support is no longer subjected to pressure from the movable bed board, the movable connecting rod acts as a lever, and the support moves towards the movable bed board. Under the action of the elastic reset support, the trigger part gradually moves away from the limit switch until it completely disconnects from the limit switch. At this time, the elastic reset part is in a retracted state. The disconnection signal fed back by the limit switch can accurately reflect the situation where a foreign object is trapped between the movable bed board and the bed frame. Compared to existing anti-pinch methods that use cushioning materials, safety gaps, or sensor detection and functional algorithms, the limit switch in this anti-pinch smart bed is not affected by surrounding objects or light, resulting in better anti-pinch performance, lower cost, and simpler structure. Attached Figure Description
[0014] 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 these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 It corresponds Figure 1 A magnified view of a portion of point A in the middle; Figure 3 This is a structural schematic diagram from another perspective of the present invention; Figure 4 It corresponds Figure 3 A magnified view of a portion of point B in the middle; Figure 5 This is an exploded view of the structure of the swing arm, movable connecting rod, trigger part, mounting column, support, elastic reset part, limit switch, first fastener and second fastener in combination.
[0016] Explanation of reference numerals in the attached drawings: 100, bed frame; 200, movable bed board; 300, lifting swing arm assembly; 310, swing arm rod; 311, groove; 320, connecting rod; 410, movable connecting rod; 420, trigger part; 430, mounting column; 500, support member; 600, elastic reset member; 700, limit switch; 810, first fastener; 820, second fastener; 910, fixed bed board; 920, pushing device. Detailed Implementation
[0017] The present invention will be further described in detail below with reference to the accompanying drawings.
[0018] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive element, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.
[0019] This embodiment relates to an anti-pinch smart bed, as shown in the following figure. Figures 1-4The system includes: a bed frame 100, a movable bed board 200, a lifting arm assembly 300, a movable connecting rod 410, a support member 500, an elastic reset member 600, and a limit switch 700. The movable bed board 200 is movably mounted on the bed frame 100; the lifting arm assembly 300 is rotatably mounted on one side of the bed frame 100 and located below the movable bed board 200; the lifting arm assembly 300 is used to push the movable bed board 200 to rise; the movable connecting rod 410 is mounted on the lifting arm assembly 300; one end of the movable connecting rod 410 is provided with a trigger part 420, and the other end is provided with a mounting post 430; the support member 500 is mounted on the mounting post 430; one side of the support member 500 abuts against the movable bed board 200; one end of the elastic reset member 600 is connected to the trigger part 420, and the other end is connected to the lifting arm assembly 300; the limit switch 700 is mounted on the lifting arm assembly 300 and is located near the trigger part 420. When the support member 500 is subjected to pressure from the movable bed board 200, the trigger part 420 triggers the limit switch 700, and the elastic reset member 600 is in a stretched state; when the support member 500 is not subjected to pressure from the movable bed board 200, the trigger part 420 does not trigger the limit switch 700, and the elastic reset member 600 is in a contracted state. Specifically, when no foreign objects (e.g., body parts of the user or pet, hard objects, etc.) are clamped between the movable bed board 200 and the bed frame 100, the support member 500 located at one end of the movable link 410 always abuts against the movable bed board 200, that is, the support member 500 located at one end of the movable link 410 is always subjected to pressure from the movable bed board 200, and the trigger part 420 located at the other end of the movable link 410 always triggers the limit switch 700, at which time the elastic reset member 600 is in a stretched state. During the descent of the movable bed board 200, the lifting arm assembly 300 first drives the movable link 410 and the support member 500 to descend, and the movable bed board 200, losing the support of the support member 500, follows suit. Throughout this process, the support member 500 is constantly subjected to pressure from the movable bed board 200. Therefore, the pressure of the movable bed board 200 on the support member 500 only decreases, or even disappears, when a foreign object is trapped between the movable bed board 200 and the bed frame 100. Even after a foreign object is trapped between the movable bed board 200 and the bed frame 100 during the descent, the lifting arm assembly 300 and the support member 500 continue to descend. At this point, the movable bed board 200 does not descend with the support member 500, and the pressure of the movable bed board 200 on the support member 500 gradually decreases. The movable link 410 then acts as a lever, and the elastic reset member 600 gradually transitions from a stretched state to a contracted state.When the support member 500 is no longer under pressure from the movable bed board 200, the movable linkage 410 acts as a lever, causing the support member 500 to move towards the movable bed board 200. Under the action of the elastic reset support member 500, the trigger part 420 gradually moves away from the limit switch 700 until it completely disconnects from the limit switch 700. At this time, the elastic reset member 600 is in a retracted state. The disconnection signal fed back by the limit switch 700 can accurately reflect the situation where a foreign object is clamped between the movable bed board 200 and the bed frame 100. Compared with existing anti-pinch methods that use buffer materials, safety gaps, or sensor detection and functional algorithms, the limit switch 700 in this anti-pinch smart bed is not affected by surrounding objects or light, resulting in better anti-pinch effect, lower cost, and simpler structure. In this embodiment, the elastic reset member 600 is a spring. In some embodiments, the elastic reset member 600 can also be other elastic components. In this embodiment, the limit switch 700 is a micro switch. When the triggering part 420 triggers the limit switch 700, it cooperates with the push rod on the limit switch 700. In some embodiments, the limit switch 700 may also be configured as other types of limit switches 700.
[0020] Furthermore, the movable link 410 is assembled onto the lifting arm assembly 300 via the first fastener 810; the assembly point of the movable link 410 and the first fastener 810 is located between the trigger part 420 and the mounting post 430, and serves as the fulcrum for the movement of the mounting post 430 and the trigger part 420, so that the movable link 410 can exert a lever effect. When the support member 500 is subjected to pressure from the movable bed plate 200, the force can be transmitted to the trigger part 420 located at the other end of the movable link 410 through the movable link 410, and the trigger part 420 at the other end of the movable link 410 is driven to approach the limit switch 700 around the assembly point, i.e., the fulcrum, so that the trigger part 420 triggers the limit switch 700, at which time the elastic reset member 600 is in a stretched state. When a foreign object is trapped between the movable bed board 200 and the bed frame 100, the foreign object exerts a supporting force on the movable bed board 200. The support member 500 is not subjected to pressure from the movable bed board 200, and the movable end of the movable link 410, i.e., the end equipped with the mounting post 430 and the support member 500, loses pressure. Under the action of the elastic reset member 600, the movable end of the movable link 410, i.e., the end equipped with the mounting post 430 and the support member 500, rotates in the opposite direction around the fulcrum, i.e., towards the movable bed board 200. The trigger part 420 at the other end of the movable link 410 moves away from the limit switch 700 until the connection with the limit switch 700 is broken. The disconnection signal fed back by the limit switch 700 accurately reflects the situation where a foreign object is trapped between the movable bed board 200 and the bed frame 100. In this embodiment, the first fastener 810 is a self-locking nut. In some embodiments, the first fastener 810 can also be a screw.
[0021] Furthermore, referring to Figures 1-4 One end of the elastic reset member 600 is connected to one side of the lifting arm assembly 300 via a second fastener 820. A limit switch 700 is provided on the lifting arm assembly 300 along the stretching direction of the elastic reset member 600. The limit switch 700 is located on the opposite side of the lifting arm assembly 300 where the second fastener 820 is located. The elastic reset member 600 and the limit switch 700 are located on the same side of the lifting arm assembly 300 and are respectively provided on opposite sides of the lifting arm assembly 300. The limit switch 700 is provided on the lifting arm assembly 300 along the stretching direction of the elastic reset member 600. This ensures that when the movable connecting rod 410 rotates around the fulcrum, the stretching direction and retraction direction of the elastic reset member 600 are consistent with the movement direction of the trigger part 420 near the limit switch 700 and away from the limit switch 700, respectively. This ensures that the force transmission has no offset loss and avoids triggering delay and failure caused by directional offset. In this embodiment, the second fastener 820 is set as a self-locking nut. In some embodiments, the second fastener 820 may also be a screw.
[0022] In this embodiment, refer to Figures 1-3 The lifting arm assembly 300 includes two arm rods 310 and a connecting rod 320. The connecting rod 320 is positioned between the two arm rods 310 and connects them. One end of each arm rod 310 is rotatably mounted on the bed frame 100, and the other end is a free end. One end of the movable connecting rod 410, one end of the elastic reset member 600, and the limit switch 700 are all mounted on the arm rods 310. Specifically, the two arm rods 310 are respectively positioned on the left and right sides of the bed frame 100. Further, referring to… Figure 5 The free end of the swing arm 310 has a groove 311 through which one end of the mounting post 430 passes; the support member 500 is assembled on the end of the mounting post 430 that passes through the groove 311. The groove 311 is used to limit the direction of movement of the mounting post 430 and prevent the direction of movement from deviating. In this embodiment, there are two grooves 311, which are respectively provided at the free ends of the two swing arms 310. In this embodiment, there are two movable connecting rods 410, two support members 500, two elastic reset members 600, and two limit switches 700, which are respectively provided on the two swing arms 310. Specifically, the support member 500 is set as a roller. In some embodiments, the support member 500 can also be set as a support block, etc.
[0023] Furthermore, referring to Figure 1 This anti-pinch smart bed also includes: a fixed bed board 910 mounted on the bed frame 100; one end of the movable bed board 200 is hinged to one side of the fixed bed board 910. This anti-pinch smart bed also includes: a pushing device 920 with one end hinged to the bed frame 100 and its output end hinged to the connecting rod 320; the pushing device 920 is used to push the connecting rod 320 and the swing arm 310 to rotate, thereby lifting the movable bed board 200. When it is necessary to lift the movable bed board 200, the output end of the pushing device 920 pushes the connecting rod 320 and the swing arm 310 to rotate, the free end of the swing arm 310 gradually rises, and the support member 500 also gradually rises, thereby pushing the movable bed board 200 to gradually rise as well. When the movable bed board 200 needs to be lowered back to the flat position, the pushing device 920 resets, and the support 500, the free end of the swing arm 310 and the connecting rod 320 descend under the weight of the movable bed board 200 itself until the movable bed board 200 is reset to the flat position.
[0024] In this embodiment, the pushing device 920 is configured as a pushing motor. In some embodiments, the pushing device 920 may also be configured as other driving devices.
[0025] In this embodiment, the anti-pinch smart bed further includes: a control device (not shown in the attached drawings); the control device, the limit switch 700, and the pushing device 920 are electrically connected. Specifically, when a foreign object is trapped between the movable bed board 200 and the bed frame 100, the trigger 420 disconnects from the limit switch 700. At this time, the limit switch 700 sends a disconnect signal to the control device. Upon receiving the disconnect signal from the limit switch 700, the control device controls the pushing device 920 to stop working, thus preventing further damage. After receiving the disconnect signal from the limit switch 700, the control device can also control the pushing device 920 to push the connecting rod 320 and the swing arm 310 to rotate, causing the free end of the swing arm 310 to rise, thereby lifting the support member 500 and the movable bed board 200 so that the user can remove the foreign object.
[0026] The above is only used to illustrate the technical solution of this utility model and not to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.
Claims
1. An anti-pinch smart bed, characterized by, include: Bed frame (100); A movable bed board (200) is movably mounted on the bed frame (100); A lifting arm assembly (300) is rotatably mounted on the bed frame (100) on one side and located on the lower side of the movable bed board (200); the lifting arm assembly (300) is used to push the movable bed board (200) to lift. A movable link (410) is mounted on the lifting arm assembly (300); one end of the movable link (410) is provided with a trigger part (420), and the other end is provided with a mounting post (430); A support member (500) is assembled on the mounting column (430); one side of the support member (500) abuts against the movable bed board (200); An elastic reset member (600) is connected at one end to the trigger part (420) and at the other end to the lifting arm assembly (300); and Limit switch (700) is mounted on the lifting arm assembly (300) and on the side near the trigger part (420); When the support member (500) is subjected to pressure from the movable bed board (200), the trigger part (420) triggers the limit switch (700), and the elastic reset member (600) is in a stretched state; When the support member (500) is not subjected to pressure from the movable bed board (200), the trigger part (420) does not trigger the limit switch (700), and the elastic reset member (600) is in a retracted state.
2. The anti-pinch smart bed of claim 1, wherein, The movable link (410) is mounted on the lifting arm assembly (300) by a first fastener (810); the assembly point of the movable link (410) and the first fastener (810) is located between the trigger part (420) and the mounting post (430), and serves as the fulcrum for the movement of the mounting post (430) and the trigger part (420).
3. The anti-pinch smart bed according to claim 1, characterized in that, One end of the elastic reset member (600) is connected to one side of the lifting arm assembly (300) via a second fastener (820); The limit switch (700) is provided on the lifting arm assembly (300) along the stretching direction of the elastic reset member (600); the limit switch (700) is located on the opposite side of the lifting arm assembly (300) where the second fastener (820) is provided.
4. The anti-pinch smart bed according to claim 1, characterized in that, The lifting arm assembly (300) includes: two arm rods (310) and a connecting rod (320) disposed between the two arm rods (310) and used to connect the two arm rods (310); one end of the arm rod (310) is rotatably mounted on the bed frame (100) and the other end is set as a free end; The movable connecting rod (410), one end of the elastic reset member (600), and the limit switch (700) are all mounted on the swing arm (310).
5. The anti-pinch smart bed according to claim 4, characterized in that, The free end of the swing arm (310) is provided with a groove (311) through which one end of the mounting post (430) passes; the support (500) is assembled at the end of the mounting post (430) through the groove (311).
6. The anti-pinch smart bed according to any one of claims 1-5, characterized in that, The support member (500) is configured as a roller.
7. The anti-pinch smart bed according to any one of claims 1-5, characterized in that, The anti-pinch smart bed also includes: a fixed bed board (910) mounted on the bed frame (100); one end of the movable bed board (200) is hinged to one side of the fixed bed board (910).
8. The anti-pinch smart bed according to claim 4, characterized in that, The anti-pinch smart bed also includes a pushing device (920) with one end hinged to the bed frame (100) and the output end hinged to the connecting rod (320); the pushing device (920) is used to push the connecting rod (320) and the swing arm (310) to rotate so as to push the movable bed board (200) to rise.
9. The anti-pinch smart bed according to claim 8, characterized in that, The anti-pinch smart bed also includes a control device; the control device, the limit switch (700), and the push device (920) are electrically connected.