Anti-pinch electric bed

Abstract

An anti-pinch electric bed comprises a bed frame, a back plate mounting frame and first linear driving mechanisms, the two sides of the back plate mounting frame are hinged to the bed frame through first rotary discs, the first linear driving mechanisms are arranged at the positions, corresponding to the first rotary discs, of the bed frame, the first linear driving mechanisms are hinged to the bed frame, and first hinge heads are arranged on first execution elements of the first linear driving mechanisms; the first rotary disc is provided with a first hinge groove matched with the first hinge head. A first upper lip part and a first lower lip part are formed in the position, at an opening of the first hinge groove, of the first rotary disc, the first lower lip part is an elastic part, and the first lower lip part can be expanded only when the back plate mounting frame is turned upwards with certain force in the downward leveling process of the back plate mounting frame; the first lower lip part is further provided with a first guide face, the first hinge joint disengaged from the first hinge groove is located on the rotation path of the first guide face, and the first guide face is used for guiding the first hinge joint disengaged from the first hinge groove to enter the first hinge groove again. The invention has the advantages of anti-pinch function, simple operation process and lower misoperation risk.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electric beds, in particular to a kind of anti-pinch electric bed. BACKGROUND

[0002] Electric bed is fully considered actual use demand at the beginning of design, for example, the position of back plate (refers to the bed plate corresponding to the bed plate of human back) is specially designed to be able to flexibly turn up, this design aims to change the angle of back plate, so as to provide more comfortable use experience for user back.

[0003] At present, a common way is to use linear drive structure such as screw mechanism, cylinder mechanism and the like to realize this function, these linear drive structures are rotated and lifted by driving back plate mounting frame (special support for installing back plate) to realize the adjustment of back plate.

[0004] The execution element (that is, the component that specifically realizes linear movement, we can call it "execution element" or "execution mechanism") of linear drive structure and back plate mounting frame are not fixedly connected, and they adopt a mutual contact mode, the purpose of this design is to lift back plate mounting frame artificially when human body part is encountered during the process of laying back plate flat, so as to prevent back plate mounting frame from accidentally pinching human body during laying process, ensure use safety, at the same time, this design also makes the lifting and laying operation of back plate very simple and natural. For example, the anti-pinch electric bed with publication number CN223220204U can realize such anti-pinch effect, similarly, the anti-pinch electric bed with publication number CN209252164U also adopts similar technical means to realize similar effect.

[0005] However, although this kind of electric bed has many advantages in design, there are still some defects that cannot be ignored in actual use, among which, the most prominent problem is that the probability of misoperation is relatively large, specifically, back plate is easily turned up accidentally when it is not needed to be turned up, which not only affects the use experience, but also may cause certain safety hazards.

[0006] Therefore, how to further reduce the risk of misoperation under the premise of ensuring that manual anti-pinch can be realized and the lifting and laying operation of back plate is simple, has become a problem that electric bed manufacturers need to solve. SUMMARY

[0007] In view of the defects existing in the prior art, the present application aims to provide an anti-pinch electric bed which can be manually anti-pinned, the lifting and laying operation of back plate is simple, and the risk of misoperation is smaller.

[0008] The anti-pinch electric bed comprises a bed frame, a backboard mounting frame hinged to the bed frame, and a linear driving mechanism one for driving the backboard mounting frame to rotate, both sides of the backboard mounting frame are hinged to the bed frame through a rotary disc one, the bed frame is provided with the linear driving mechanism one at the position corresponding to the rotary disc one, the linear driving mechanism one is hinged to the bed frame and is provided with a hinge one on an execution element one thereof, and the rotary disc one is provided with a hinge groove one matched with the hinge one at the corresponding position. The rotary disc one is formed with an upper lip one and a lower lip one at the opening of the hinge groove one, the lower lip one is an elastic part, and only when the backboard mounting frame is turned upward with a certain force during the process of being laid down, the lower lip one can be expanded to allow the hinge one to be separated from the hinge groove one. The lower lip one is also provided with a guide surface one, the bed frame is provided with a baffle one below the linear driving mechanism one to limit the hinge one separated from the hinge groove one on the rotary path of the guide surface one, and the guide surface one is used to guide the hinge one separated from the hinge groove one to re-enter the hinge groove one when the backboard mounting frame is turned downward with a certain force.

[0009] Preferably, the linear driving mechanism one is a lead screw driving mechanism, the lead screw driving mechanism comprises a motor one hinged to the bed frame and a lead screw one coaxially connected with the output shaft of the motor one, the lead screw one is provided with a lead screw slider one serving as the execution element one, and the rotary disc one is provided with a displacement notch one for the lead screw one.

[0010] Preferably, the linear driving mechanism one is a gas cylinder, the cylinder body of the gas cylinder is rotatably installed on the bed frame, and the piston rod of the gas cylinder serves as the execution element one.

[0011] Preferably, the linear driving mechanism one is an electric cylinder, the cylinder body of the electric cylinder is rotatably installed on the bed frame, a driving rod for mounting the hinge one is connected to the sliding table of the electric cylinder, and the driving rod serves as the execution element one.

[0012] Preferably, the bed frame comprises a pair of cross frames and a pair of longitudinal beams constituting a frame structure, and the linear driving mechanism one is arranged in the cross frame at the corresponding position.

[0013] Preferably, the bed frame is provided with a limiting mechanism for limiting the turning angle of the backboard mounting frame.

[0014] Preferably, the cross frame comprises: a lower cross rod body, and an assembly slot is formed in the upper surface of the lower cross rod body. The upper crossbar body is assembled in the assembly slot, and a lower surface of the upper crossbar body is provided with an assembly groove for accommodating the linear driving mechanism one; The groove wall of the assembly slot is provided with an installation groove one with an upward opening, and the groove wall of the assembly slot is provided with an installation groove two with a downward opening, and the installation groove one and the installation groove two cooperatively form an axle installation hole for rotatingly installing the rotating shaft of the linear driving mechanism one.

[0015] Preferably, the groove wall of the assembly slot and the groove wall of the assembly slot are connected through a fastening assembly.

[0016] Preferably, the longitudinal beam is fastened and connected with the cross frame through connecting bolts.

[0017] Preferably, the bed frame is further provided with a leg plate mounting frame, the leg plate mounting frame comprises a thigh plate mounting arm, one end of the thigh plate mounting arm is fixedly connected with a second rotary disc hinged on the bed frame, the other end of the thigh plate mounting arm is hingedly connected with a calf plate mounting arm, the other end of the calf plate mounting arm is hingedly connected with a connecting arm, the other end of the connecting arm is hingedly connected on the bed frame, the bed frame is provided with a second linear driving mechanism corresponding to the position of the second rotary disc, the second linear driving mechanism is hingedly connected on the bed frame, and a second hinge joint is arranged on an execution element two of the second linear driving mechanism, the second rotary disc is provided with a second hinge groove matched with the second hinge joint at the corresponding position.

[0018] Preferably, the second rotary disc forms a second upper lip and a second lower lip at the opening of the second hinge groove, the second lower lip is an elastic part, and the second lower lip is expanded only when the leg plate mounting frame is turned upward by a certain force during the process of laying down the leg plate mounting frame, so as to allow the second hinge joint to be separated from the second hinge groove; The second lower lip is further provided with a second guide surface, the bed frame is provided with a baffle two below the second linear driving mechanism, the baffle two is used to limit the second hinge joint separated from the second hinge groove on a rotary path of the second guide surface, and the second guide surface is used to guide the second hinge joint separated from the second hinge groove to re-enter the second hinge groove when the back plate mounting frame is turned downward by a certain force. In summary, the present application has the following beneficial effects:

[0019] 1: The anti-pinch electric bed in the present application can be manually prevented from being pinched, and the lifting and laying down operation of the back plate is simple and convenient while the risk of misoperation is smaller.

[0020] 2: The anti-pinch electric bed in the present application can be manually prevented from being pinched, and the lifting and laying down operation of the leg plate is simple and convenient while the risk of misoperation is smaller.

[0021] 3: The anti-pinch electric bed in the application, the space behind the back plate is more spacious and transparent, which is conducive to some work such as cleaning in the space behind the back plate, and at the same time, the back plate looks simple and atmospheric. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The anti-pinch electric bed is a structural schematic diagram; Figure 2 The anti-pinch electric bed is a structural schematic diagram; Figure 3 The anti-pinch electric bed is a structural schematic diagram; Figure 1 The anti-pinch electric bed is a structural schematic diagram; Figure 4 The anti-pinch electric bed is a structural schematic diagram; Figure 3 The anti-pinch electric bed is a structural schematic diagram; Figure 5 The anti-pinch electric bed is a structural schematic diagram; Figure 4 The anti-pinch electric bed is a structural schematic diagram; Figure 6 The anti-pinch electric bed is a structural schematic diagram; Figure 4 The anti-pinch electric bed is a structural schematic diagram; Figure 7 The anti-pinch electric bed is a structural schematic diagram; Figure 6 The anti-pinch electric bed is a structural schematic diagram; Figure 8 The anti-pinch electric bed is a structural schematic diagram; Figure 9 The anti-pinch electric bed is a structural schematic diagram; Figure 8 The anti-pinch electric bed is a structural schematic diagram; Figure 10 The anti-pinch electric bed is a structural schematic diagram; Figure 11 The anti-pinch electric bed is a structural schematic diagram; Figure 10 The anti-pinch electric bed is a structural schematic diagram; Figure 12 The anti-pinch electric bed is a structural schematic diagram; Figure 13 The anti-pinch electric bed is a structural schematic diagram; Figure 4 The anti-pinch electric bed is a structural schematic diagram; DETAILED DESCRIPTION

[0023] The application will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] Embodiment: An anti-pinch electric bed, such as Figures 1-7As shown, it comprises a bed frame 1, a backboard mounting frame 2 hinged to the bed frame 1, and a linear driving mechanism 3 for driving the backboard mounting frame 2 to rotate, a plurality of backboards 01 are fixedly arranged on the backboard mounting frame 2, both sides of the backboard mounting frame 2 are hinged to the bed frame 1 through a rotary disc 4, the bed frame 1 is provided with the linear driving mechanism 3 corresponding to the position of the rotary disc 4, that is, the backboard mounting frame 2 is driven by two linear driving mechanisms 3, the linear driving mechanism 3 is hinged to the bed frame 1, and a hinge 5 is arranged on an execution element 30 (a component for realizing linear movement) of the linear driving mechanism 3, the rotary disc 4 is provided with a hinge groove 41 matched with the hinge 5 at the corresponding position, in this embodiment, the linear driving mechanism 3 adopts a lead screw driving mechanism, which specifically comprises a motor 31 hinged to the bed frame 1 and a lead screw 32 coaxially connected with an output shaft of the motor 31, the motor 31 is hinged to the bed frame 1 through a rotating shaft 300, and the lead screw 32 is provided with a lead screw block 1 serving as the execution element 30, accordingly, the bed frame 1 has a side limiting wall 100 (attached Figure 4 Since it is a sectional view, only one side of the side limiting wall 100 can be seen), the two side limiting walls 100 provide a premise guarantee for the movement of the lead screw block 1, in this embodiment, the lead screw block 1 is connected with the hinge 5 as a whole, which exists as a larger lead screw block body, as for the positional relationship between the lead screw block 1 and the hinge 5, it is not limited, which can be like Figure 4 As shown, the hinge 5 is sleeved on the lead screw block 1, of course, in other embodiments, the hinge 5 is located on the side of the lead screw block 1 away from the motor 31. In addition, the rotary disc 4 is also provided with a gap 45 for the lead screw 32.

[0025] When it is needed to turn up the backboard mounting frame 2 to adjust the angle of the backboard 01, the motor 31 is first started, and the lead screw 32 connected with the motor 31 also starts to rotate synchronously, at this time, the lead screw block 1 fixed on the lead screw 32 moves along the axial direction of the lead screw 32 under the action of the threads of the lead screw 32, which drives the rotary disc 4 connected therewith to rotate around the center axis, and the rotation of the rotary disc 4 further causes the backboard mounting frame 2 to lift up, thereby achieving the purpose of adjusting the angle of the backboard 01; when it is needed to flatten the backboard mounting frame 2 to flatten the backboard 01, the motor 31 is started in reverse, and the linear driving mechanism 3 is reset.

[0026] The rotary table 4, in particular, has an upper lip 42 and a lower lip 43 formed at the opening of the hinge slot 41. The lower lip 43 is designed as an elastic part, which gives it a unique function in actual operation. Specifically, whether the back panel mounting frame 2 is flipped upwards or laid flat downwards, the lower lip 43 can maintain its original shape and will not easily deform or expand. However, if there are people behind the back panel mounting frame 2 during the flattening process, the back panel mounting frame 2 needs to be flipped upwards to prevent it from being further flattened and causing injury. When performing the upward flipping operation, a certain force must be applied. Under this force, the lower lip 43 can expand, thus creating conditions for the hinge joint 5 to forcibly disengage from the hinge slot 41. This lower lip design ensures that the back panel mounting bracket 2 will not flip upwards when lightly touched, effectively reducing the risk of misoperation. At the same time, applying a certain amount of force will allow the back panel mounting bracket 2 to flip upwards, making it easier to lift the back panel 01.

[0027] The lower lip 43 is specially provided with a guide surface 44, which is directed towards the hinge joint 5 that has disengaged from the hinge slot 41. The bed frame 1 has a baffle 101 below the linear drive mechanism 3. When the hinge joint 5 disengages from the hinge slot 41, the linear drive mechanism 3 loses its restraint and flips. The hinge joint 5 flips along with the linear drive mechanism 3, while the baffle 101 restricts the flipping position of the hinge joint 5 from below (specifically, by restricting the hinge joint 5 through the limiting screw 32), ensuring that the hinge joint 5 is located on the rotation path of the guide surface 44. The main function of the guide surface 44 is that when the back panel mounting bracket 2 is rotated downwards with a certain force, it will first contact the surface below the center of the hinge joint 5, i.e., the attached surface. Figure 12 In state A, with continued application of force, the hinge joint 5, which had previously disengaged from the hinge groove 41, can be guided to smoothly re-enter and engage with the hinge groove 41 along the guide surface 44, as shown in the appendix. Figure 12 In the C position. This makes it easy to flatten the back panel with a simple force application.

[0028] In another embodiment, the linear drive mechanism 3 uses a cylinder instead of the aforementioned lead screw drive mechanism. The cylinder body is rotatably mounted on the bed frame 1, and the cylinder piston rod exists as the actuator 30. The linear drive mechanism 3 is the same as the one in embodiment 1.

[0029] In another embodiment, the linear drive mechanism 3 uses an electric cylinder instead of the aforementioned lead screw drive mechanism. The cylinder body of the electric cylinder is rotatably mounted on the bed frame 1, and the slide of the electric cylinder is connected to a drive rod on which the aforementioned hinge joint 5 is mounted. The drive rod exists as an actuator 30. The linear drive mechanism 3 is the same in principle as in embodiment 1.

[0030] In this embodiment, the bed frame 1 is provided with a limiting mechanism to restrict the rotation angle of the backrest mounting frame 2. When a person applies force to rotate the backrest mounting frame 2 upward to prevent injury to the person, the limiting mechanism will activate to prevent the backrest mounting frame 2 from continuing to rotate. See Appendix. Figure 4 As shown, the limiting mechanism is a guard 10, which is a component of the bed frame 1.

[0031] In this embodiment, as Figure 2 As shown, the bed frame 1 includes a pair of crossbeams 11 and a pair of longitudinal beams 12. The longitudinal beams 12 are fastened to the crossbeams 11 by connecting bolts 13. The crossbeams and longitudinal beams form a frame structure, which simplifies the structure of the bed frame. The linear drive mechanism 3 is specifically set in the crossbeams 11 at the corresponding position. In this way, when the back panel 01 is lifted by the back panel mounting bracket 2, the space behind the back panel 01 appears more spacious and transparent, which is conducive to doing some work such as cleaning in the space behind the back panel. At the same time, the back of the back panel looks simple and elegant.

[0032] In this embodiment, as Figures 8-9 As shown, the crossbar 11 is further designed to include components such as a lower crossbar 111 and an upper crossbar 112. The upper surface of the lower crossbar 111 has an assembly slot 1111, and the upper crossbar 112 is assembled in the assembly slot 1111. Its lower surface has an assembly groove 1121 for accommodating the linear drive mechanism 3. The sidewall of the assembly groove 1121 is the side limiting wall 100 described in this embodiment. The groove wall of the assembly slot 1111 and the groove wall of the assembly groove 1121 are connected by a fastening assembly. The groove wall of the assembly slot 1111 has an upward-opening mounting groove 1112, and the groove wall of the assembly groove 1121 has a downward-opening mounting groove 2. 1122, Mounting slot one 1112 and mounting slot two 1122 cooperate to form a shaft mounting hole, which is used to rotatably mount the rotating shaft 300 on the linear drive mechanism one 3. This assembly structure design makes the installation of the linear drive mechanism one 3 more convenient. In specific installation, first, the rotating shaft 300 on the linear drive mechanism one 3 is installed in mounting slot one 1112. Then, the upper crossbar body 112 is assembled into the mounting slot 1111 and fixed. Of course, during assembly, ensure that mounting slot two 1122 is aligned with the rotating shaft. After the assembly is completed, mounting slot one 1112 and mounting slot two 1122 naturally form the aforementioned shaft mounting hole for limiting the rotating shaft 300.

[0033] In this embodiment, as Figures 1-2 As shown in 4, 10-11, and 13, legboard mounting brackets 6 are also connected to both sides of the bed frame 1. Each legboard mounting bracket 6 includes a thigh plate mounting arm 61. One end of the thigh plate mounting arm 61 is fixedly connected to a rotary table 62 hinged to the bed frame 1. The other end of the thigh plate mounting arm 61 is hinged to a lower leg plate mounting arm 63. The other end of the lower leg plate mounting arm 63 is hinged to a connecting arm 64. The other end of the connecting arm 64 is hinged to the bed frame 1. A linear drive mechanism 65 is provided on the bed frame 1 at the position corresponding to the rotary table 62. The linear drive mechanism 65 is hinged to the bed frame 1, and its actuator 650 is provided with a hinge joint 66. Turntable 2 62 is provided with hinge groove 2 621 that mates with hinge joint 2 66 at the corresponding position; in this embodiment, linear drive mechanism 2 65, like linear drive mechanism 1 3, adopts a lead screw drive mechanism. This lead screw drive mechanism specifically includes motor 2 651 hinged to the bed frame 1 and lead screw 2 652 coaxially connected to the output shaft of motor 2 651. Motor 2 651 is rotatably mounted on bed frame 1 via rotating shaft 2 6510. Lead screw 2 652 is provided with lead screw slider 2 for use as the actuator 2 650. Correspondingly, bed frame 1 has side limiting walls 2 103 located on both sides of lead screw slider 2 (attached). Figure 13 Since this is a sectional view, only one side limiting wall 103 is visible. The two side limiting walls 103 provide the necessary support for the movement of the lead screw and slider. In this embodiment, the lead screw and slider are connected to the actuator 650 as a whole, and this whole exists as a larger lead screw and slider body. In addition, the rotary table 62 is provided with a clearance notch 620 to accommodate the lead screw 652.

[0034] When motor 651 rotates, lead screw 652 rotates synchronously. Through the helical motion principle of the screw, lead screw slider 652 is driven to make precise linear displacement on lead screw 652. As a result, thigh plate mounting arm 61, calf plate mounting arm 63, and connecting arm 64 are all adaptively deflected, thereby changing the angle of the leg plate (including thigh plate 02 and calf plate 02). When it is necessary to flatten the leg plate mounting bracket 6 to flatten the leg plate, motor 651 is started in reverse, and linear drive mechanism 65 is reset.

[0035] Similar to rotary table 4, rotary table 262 has two unique parts at the opening of hinge groove 2621: upper lip 2622 and lower lip 2623. The lower lip 2623 is specially designed to be elastic. This elasticity allows it to exhibit unique functions in actual operation. Specifically, under normal circumstances, when the lower lip 2623 is lowered flat on the leg plate mounting bracket 6, it can maintain its original shape and will not easily deform or expand. However, if there is a human body or human body parts under the leg plate mounting bracket 6, the leg plate mounting bracket 6 needs to be flipped upward to prevent it from being further flattened and causing injury to the human body. When performing the upward flipping operation, a certain force must be applied. Under this force, the lower lip 2623 can expand, thus creating conditions for the hinge joint 266 to forcibly detach from the hinge groove 2621. Therefore, it can be said that the lower lip 623 prevents the leg plate mounting bracket 6 from flipping upward when it is slightly touched, thus reducing the risk of misoperation. At the same time, a certain amount of force can make the leg plate mounting bracket 6 flip upward, which facilitates the lifting of the leg plate (including the thigh plate 02 and the lower leg plate 03).

[0036] Similar to the lower lip 43, the lower lip 623 is also specially designed with a guide surface 624. The guide surface 624 is mainly for the hinge joint 66 that has previously disengaged from the hinge slot 621. The bed frame 1 has a baffle 102 below the linear drive mechanism 65. When the hinge joint 66 disengages from the hinge slot 621, the linear drive mechanism 65 loses its restraint due to the disengagement of the hinge joint 66, and thus flips over. The hinge joint 66 flips along with the linear drive mechanism 65. The baffle 102 restricts the flipping position of the hinge joint 66 from below and ensures that the hinge joint 66 is located on the rotation path of the guide surface 624. The main function of the guide surface 624 is that when the leg plate mounting bracket 6 is rotated downwards with a certain force, it will first contact the surface below the center of the hinge joint 66. As the force continues to be applied, it can guide the hinge joint 66, which has previously disengaged from the hinge groove 621, to re-enter and engage with the hinge groove 621 along the guide surface 624. In this way, the leg plate can be easily laid flat with a simple application of force.

[0037] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in this invention has been fully described in the claims.

Claims

1. An anti-pinch electric bed, comprising a bed frame (1), a backrest mounting bracket (2) hinged to the bed frame (1), and a linear drive mechanism (3) for driving the backrest mounting bracket (2) to rotate, characterized in that, Both sides of the back panel mounting bracket (2) are hinged to the bed frame (1) via a rotary table (4). The bed frame (1) is provided with a linear drive mechanism (3) at the position corresponding to the rotary table (4). The linear drive mechanism (3) is hinged to the bed frame (1) and its actuator (30) is provided with a hinge joint (5). The rotary table (4) is provided with a hinge groove (41) that cooperates with the hinge joint (5) at the corresponding position. The rotary table (4) forms an upper lip (42) and a lower lip (43) at the opening of the hinge slot (41). The lower lip (43) is an elastic part. The lower lip (43) can only be expanded when the back plate mounting bracket (2) is flipped upward with a certain force during the process of the back plate mounting bracket (2) being laid flat downward, thereby allowing the hinge joint (5) to disengage from the hinge slot (41). The lower lip (43) is also provided with a guide surface (44). The bed frame (1) is provided with a baffle (101) below the linear drive mechanism (3) to restrict the hinge joint (5) that has disengaged from the hinge slot (41) on the rotation path of the guide surface (44). The guide surface (44) is used to guide the hinge joint (5) that has disengaged from the hinge slot (41) to re-enter the hinge slot (41) when the back panel mounting bracket (2) is rotated downward with a certain force.

2. The anti-pinch electric bed according to claim 1, characterized in that, The linear drive mechanism (3) is a lead screw drive mechanism, which includes a motor (31) hinged to the bed frame (1) and a lead screw (32) coaxially connected to the output shaft of the motor (31). The lead screw (32) is provided with a lead screw slider for use as the actuator (30), and the rotary table (4) is provided with a clearance notch (45) for the lead screw (32).

3. The anti-pinch electric bed according to claim 1, characterized in that, The linear drive mechanism (3) is a cylinder, the cylinder body of which is rotatably mounted on the bed frame (1), and the piston rod of which exists as the actuator (30).

4. The anti-pinch electric bed according to claim 1, characterized in that, The linear drive mechanism (3) is an electric cylinder. The cylinder body of the electric cylinder is rotatably mounted on the bed frame (1). The slide of the electric cylinder is connected to a drive rod on which the hinge joint (5) is installed. The drive rod exists as the actuator (30).

5. The anti-pinch electric bed according to claim 1, characterized in that, The bed frame (1) includes a pair of crossbeams (11) and a pair of longitudinal beams (12) that make up the frame structure, and the linear drive mechanism (3) is disposed in the crossbeams (11) at the corresponding positions.

6. The anti-pinch electric bed according to claim 1, characterized in that, The bed frame (1) is provided with a limiting mechanism for limiting the flipping angle of the back panel mounting bracket (2).

7. The anti-pinch electric bed according to claim 5, characterized in that, The crossbar (11) comprises: The lower crossbar body (111) has an assembly slot (1111) on its upper surface. The upper crossbar body (112) is assembled in the assembly slot (1111), and its lower surface is provided with an assembly slot (1121) for accommodating the linear drive mechanism (3). The mounting slot (1111) has an upward-facing mounting slot 1 (1112) on its wall, and the mounting slot (1121) has a downward-facing mounting slot 2 (1122) on its wall. The mounting slot 1 (1112) and the mounting slot 2 (1122) cooperate to form a shaft mounting hole for rotatably mounting the shaft (300) of the linear drive mechanism 1 (3).

8. The anti-pinch electric bed according to claim 7, characterized in that, The wall of the assembly slot (1111) is connected to the wall of the assembly slot (1121) by a fastening assembly.

9. The anti-pinch electric bed according to claim 5, characterized in that, The longitudinal beam (12) is fastened to the crossbeam (11) by connecting bolts.

10. An anti-pinch electric bed according to claim 1, characterized in that, The bed frame (1) is also connected to leg plate mounting brackets (6) on both sides. The leg plate mounting brackets (6) include thigh plate mounting arms (61). One end of the thigh plate mounting arm (61) is fixedly connected to a rotary disk two (62) hinged to the bed frame (1). The other end of the thigh plate mounting arm (61) is hinged to a calf plate mounting arm (63). The other end of the calf plate mounting arm (63) is hinged to a connecting arm (64). The other end of the connecting arm (64) is hinged to the bed frame (1). The bed frame (1) is provided with a linear drive mechanism two (65) at the position corresponding to the rotary disk two (62). The linear drive mechanism two (65) is hinged to the bed frame (1) and its actuator two (650) is provided with a hinge joint two (66). The rotary disk two (62) is provided with a hinge groove two (621) that cooperates with the hinge joint two (66) at the corresponding position. The turntable 2 (62) forms an upper lip 2 (622) and a lower lip 2 (623) at the opening of the hinge groove 2 (621). The lower lip 2 (623) is an elastic part. Furthermore, the lower lip 2 (623) can only be expanded when the leg plate mounting bracket (6) is flipped upward with a certain force during the process of the leg plate mounting bracket (6) being laid flat downward, thereby allowing the hinge joint 2 (66) to disengage from the hinge groove 2 (621). The lower lip (623) is also provided with a guide surface (624). The bed frame (1) is provided with a baffle (102) below the linear drive mechanism (65) to restrict the hinge joint (66) that has disengaged from the hinge slot (621) on the rotation path of the guide surface (624). The guide surface (624) is used to guide the hinge joint (66) that has disengaged from the hinge slot (621) to re-enter the hinge slot (621) when the back panel mounting bracket (2) is rotated downward with a certain force.

Images