Defecation door lifting mechanism suitable for multifunctional nursing bed

Abstract

The invention relates to a defecation door lifting mechanism suitable for a multifunctional nursing bed. The structure comprises a motor, a ball screw, a sliding block guide rail part, a connecting rod, a connecting piece part, an anti-roll part, a toilet door module and a guide rail. In the invention, a connecting piece part comprises a connecting piece (1) and a connecting piece (2), a sliding block guide rail part comprises a horizontal sliding block guide rail assembly and a vertical sliding block guide rail assembly, an anti-roll part comprises a linear sliding block bearing and a polished rod, and a toilet door module comprises a toilet door, a supporting plate and a roller. Wherein the motor is a driving part, and the motor drives a horizontal sliding block to do reciprocating linear motion through a connecting piece (1), so that a connecting rod is driven to do bidirectional motion on a linear sliding block bearing in the anti-roll part through a connecting piece (2) along a polished rod by restraining a vertical guide rail, and a supporting plate in the toilet door module is driven to move; therefore, the bidirectional lifting movement of the toilet door is realized. For a multifunctional nursing bed which is integrated with a closestool or has a function of going to the toilet on a bed, the invention provides a universal excrement door lifting mechanism, a single driving piece is used as a power source, movement of an excrement door in the horizontal direction and the vertical direction is completed, the space occupied under the bed is reduced, and the practicability is high. Therefore, the product is more complete, safer and more reliable in function.

Description

Technical Field

[0001] The invention belongs to the field of multifunctional nursing beds, and in particular relates to a door lifting mechanism suitable for a multifunctional nursing bed. Background Art

[0002] According to data from the National Bureau of Statistics, the aging population is becoming increasingly serious, and the number of bedridden people is increasing. For this group of people, urination and defecation are a pressing issue that needs to be addressed. How to help these people solve this problem and reduce the burden on their families is a key issue. This is why multifunctional nursing beds have emerged. Many multifunctional nursing beds on the market offer the ability to urinate and defecate in bed, but these beds have relatively simple modular structures and lack comprehensive functionality.

[0003] To address this phenomenon, patent CN119059044A provides a packaging mechanism and control method for a toilet dedicated to an intelligent nursing bed, but does not mention a toilet door lifting mechanism; patent CN114190805A provides a packaging mechanism and a toilet dedicated to a nursing bed. The article involves the content of the bed board opening and closing mechanism, but the method described in the article has safety hazards: the bed board opens to both sides, and its corners are prone to collision with people around, and when the bed board is folded in the middle first, due to gravity, the human body's buttocks will fall downwards. Even if a layer of mattress is laid on the bed board, there is still a risk of the bed board pinching the human body. Summary of the Invention

[0004] To this end, the present invention provides a door lifting mechanism suitable for a multifunctional nursing bed. To solve the above hidden dangers, the present invention adopts the following technical solutions:

[0005] The present invention provides a door lifting mechanism suitable for a multifunctional nursing bed. The slider guide portion includes a horizontal slider guide assembly and a vertical slider guide assembly, the connector portion includes a connector (1) and a connector (2), the anti-rolling portion includes a linear slider bearing and a light rod, and the door module includes a door, a support plate and a roller. The motor is a driving component, which drives the nut to move through the ball screw, and then drives the horizontal slider fixed to it to perform reciprocating linear motion through the connector (1), thereby driving the connecting rod through the connector (2) to drive the linear slider bearing in the anti-rolling portion along the light rod through the constraint of the vertical guide in the vertical slider guide assembly to perform left and right, up and down bidirectional motion, thereby driving the support plate in the door module to perform corresponding motion, thereby realizing the up and down, left and right bidirectional motion of the door opening and closing.

[0006] In particular, the motor is fixed on the bed frame by application, and the central axis of the output shaft thereof is in the same straight line as the central axis of the ball screw.

[0007] In particular, the slider guide portion includes a horizontal slider guide assembly and a vertical slider guide assembly. The horizontal slider in the horizontal slider guide assembly moves along the horizontal guide rail in the horizontal slider guide assembly; the vertical slider in the vertical slider guide assembly moves along the vertical guide rail in the vertical slider guide assembly and is connected to the polished rod in the anti-roll portion.

[0008] In particular, the connecting member portion comprises a connecting member (1) and a connecting member (2). The connecting member (1) connects the nut and the horizontal slider in the horizontal slider guide rail assembly; the connecting member (2) connects the linear slider bearing in the anti-rolling portion of the connecting rod.

[0009] In particular, the anti-roll part includes a light rod, a vertical slider guide rail assembly, and a linear slider bearing. When the door is subjected to uneven force, the vertical guide rail in the vertical slider guide rail assembly constrains the light rod in the horizontal direction, limiting the possibility of the light rod reversing in the vertical plane, thereby achieving the anti-roll function.

[0010] In particular, the wicket module comprises a wicket, a support plate and a roller. The size and shape of the wicket can be modified according to actual needs. The support plate is fixedly connected to the wicket, and the roller is fixedly connected to the support plate, but this does not affect the movement of the roller in the guide rail.

[0011] In particular, the guide rail is in an "L" shape, and is used to constrain the movement of the access door so that it moves according to the shape of the guide rail to achieve a desired function.

[0012] In particular, the weight of the slider guide rail part, the anti-roll part and the access door module and the external force (which may exist) on the access door can be decomposed into a force in the horizontal direction (hereinafter referred to as "horizontal pressure") and a force in the vertical direction (hereinafter referred to as "vertical pressure"); wherein the vertical pressure is offset by the horizontal guide rail in the horizontal slider guide rail assembly, and the horizontal pressure is transmitted to the nut through the connecting member (1), and then transmitted to the thread teeth on the ball screw, thereby offsetting it.

[0013] In particular, the deadweight of the slider guide part, the anti-roll part and the lavatory door module and the external force (which may exist) acting on the lavatory door have been offset in the above manner, so that the present invention can realize self-locking of the lavatory door at any position within its range of motion within the normal use range of the multifunctional nursing bed, thereby greatly improving the reliability and safety of the mechanism.

[0014] The advantages of the present invention are: providing a lifting mechanism for a commode door of a multifunctional nursing bed with an integrated toilet or a toileting function in bed, which is driven by a single driving member, reducing the use of a prime mover; wherein the size and movement stroke of the commode door can be changed according to actual needs, and it has self-locking properties at any position within its movement stroke, with strong universality, high safety and high practicality; eliminating the hidden danger of pinching the human body that may exist in other opening and closing mechanisms, and can prevent the commode door from tilting left and right due to uneven force, taking up less space and having a simple structure, and the movement of the target component in the horizontal and vertical directions can be achieved only by the rotation of the motor itself; reducing the space occupied under the bed, making the product more functionally complete, safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 、 Figure 2 This is a schematic diagram of the overall composition of the wicket door lifting mechanism (when closed) provided by the present invention;

[0016] Figure 3 This is a schematic diagram of the wicket door fixing method of the wicket door lifting mechanism provided by the present invention;

[0017] Figure 4 It is a schematic diagram of the wicket door opening of the wicket door lifting mechanism provided by the present invention.

[0018] Note in the figure:

[0019] 1. Bed board; 2. Vertical guide rail; 3. Vertical slider; 4. Guide rail; 5. Polished rod; 6. Linear slider bearing; 7. Motor; 8. Motor bracket; 9. Coupling; 10. Nut; 11. Ball screw; 12. Horizontal guide rail; 13. Bearing support; 14. Bed frame; 15. Access door; 16. Roller; 17. Connector (1); 18. Horizontal slider; 19. Connecting rod; 20. Connector (2); 21. Support plate. DETAILED DESCRIPTION

[0020] In order to make the structure and function of the present invention easier to understand, the present invention is described in detail with reference to the following embodiments and the accompanying drawings.

[0021] Example

[0022] In this example, a door lifting mechanism suitable for a multifunctional nursing bed includes: a motor, a ball screw, a slider guide rail part, a connecting rod, a connector part, an anti-roll part, a door module and a guide rail. Figure 1 、 2As shown, the motor 7 is fixed to the bed frame through the motor bracket 8. When the motor 7 is working, it drives the ball screw 11 to rotate through the coupling 9, thereby driving the nut 10 on it to perform linear motion. The ball screw 11 is supported by the bearing supports 13 at both ends. The nut 10 is fixedly connected to the horizontal slider 18 through the connecting member (1). The connecting member (1) 17 and the horizontal slider 18 are fixed by screws, and the connecting member (1) 17 is hinged to the connecting rod 19. Therefore, when the nut 10 moves, it can perform linear motion along the horizontal guide rail 12 through the connecting member (1) 17 through the horizontal slider 18. Among them, the connecting rod 19 is hinged to the connecting member (1) 17 and the connecting member (2) 20, and the connecting rod 19 can rotate around the connecting member (1) 17 and the connecting member (2) 20 respectively. When the horizontal slider 18 performs linear motion, it will pull (or push) the connecting rod 19, thereby driving the connecting member (2) 20 to also perform linear motion. It should be noted that the angle between the connecting rod 19 and the horizontal and vertical directions is less than 90 degrees to prevent accidents caused by excessive angles.

[0023] The connecting member (2) 20 is fixed to the linear slider bearing 6 by screws, and square blocks are provided at both ends of the polished rod 5, with openings thereon for fixing to the vertical slider 3 by screws, so that when the connecting rod 19 drives the connecting member (2) 20, the linear slider bearing 6 is driven to slide horizontally along the polished rod 5. At the same time, the linear slider bearing 6 is fixed to the support plate 21, and between the support plate 21 and the access door 15 by screws, and there is a roller 16 fixed to the connecting member (2) 20, and the roller 16 moves within the track of the track 4, so that the linear slider bearing 6 first moves vertically when the access door 15 is opened, and then moves horizontally (the order is reversed when the access door 15 is closed). The two movements are superimposed on each other, so that the connecting rod 5 can drive the linear slider bearing 6 to move in the horizontal and vertical directions. Among them, the vertical movement is achieved by the linear slider bearing 6 driving the polished rod 5 through the vertical slider 3 along the vertical guide rail 2.

[0024] The guide rail 4 has an L-shaped trajectory, which is used to achieve the up-down and left-right movement of the latitudinal door 15, allowing the latitudinal door 15 to move along a specific trajectory. Because the latitudinal door 11 first moves horizontally and then vertically when opening and closing, the risk of pinching the human buttocks during the movement of the latitudinal door 15 is avoided. Moreover, during the entire movement of the latitudinal door 15, the external force (if any) and the deadweight of the latitudinal door 15 are transmitted to the horizontal guide rail 12 and the ball screw 11, which respectively offset the vertical and horizontal forces, thereby making the latitudinal door 15 self-locking when closed.

[0025] This embodiment is only an embodiment with better effects of the present invention and does not limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention are included in the scope of protection of the present invention.

Claims

1. A door lifting mechanism suitable for a multifunctional nursing bed, characterized in that: include: A motor, a ball screw, a slider guide rail portion, a connecting rod, a connector portion, an anti-roll portion, a door module, and a guide rail. The slider guide rail portion includes a horizontal slider guide rail assembly and a vertical slider guide rail assembly, the connector portion includes a connector (1) and a connector (2), the anti-roll portion includes a linear slider bearing and a polished rod, and the door module includes a door, a support plate, and a roller. The motor is a driving component, which is fixed on the bracket and drives the horizontal slider in the horizontal slider guide rail assembly through the connecting member (1), so that the motor drives the horizontal slider to perform reciprocating linear motion, thereby driving the connecting rod through the connecting member (2) to make the linear slider bearing in the anti-rolling part move left and right and up and down along the light rod through the constraint of the vertical guide rail in the vertical slider guide rail assembly, thereby driving the support plate in the door module to perform corresponding movement, thereby realizing the up and down, left and right bidirectional movement of opening and closing the door.

2. The ball screw according to claim 1 is fixed on a horizontal plane through bearing supports at both ends thereof, and is connected to the motor through a coupling; a nut is also arranged thereon, and the nut is connected to the connecting member (1) through a screw. When the motor is working, the ball screw drives the nut to perform reciprocating linear motion, and then the nut drives the connecting member (1) to perform reciprocating linear motion along the horizontal guide rail to realize the transmission of motion.

3. The slider guide rail portion according to claim 1, characterized in that: The slider guide portion includes a horizontal slider guide assembly and a vertical slider guide assembly. The horizontal guide rail of the horizontal slider guide assembly is horizontally fixed to the bed frame, and the horizontal slider of the horizontal slider guide assembly can perform reciprocating linear motion on the horizontal guide rail of the horizontal slider guide assembly; the vertical guide rails of the vertical slider guide assembly are vertically fixed to both sides of the bed frame and are symmetrically distributed. The vertical slider of the vertical slider guide assembly can perform reciprocating linear motion on the vertical guide rails of the vertical slider guide assembly.

4. The connecting rod according to claim 1, characterized in that Through holes are provided at both ends for connecting the connecting piece (1) and the connecting piece (2).

5. The connector portion according to claim 1, characterized in that: The invention comprises a connecting member (1) and a connecting member (2). The connecting member (1) is in an L-shape, and is provided with a hinged support between the nut and the connecting rod, and has a through hole on one side for being fixedly assembled with the horizontal slider in the horizontal slider guide rail assembly; the connecting member (2) is in an I-shape, and is provided with a hinged support for being hinged with the connecting rod, and has a through hole on one side for being fixedly assembled with the linear slider bearing in the anti-rolling part.

6. The anti-roll portion according to claim 1, characterized in that: The linear slider bearing and the polished rod are provided with through holes at both ends for fixed connection with the vertical slider in the vertical slider guide rail assembly. According to claim 3, the polished rod is fixedly connected to the vertical slider in the vertical slider guide rail assembly and can move vertically on the vertical guide rail in the vertical slider guide rail assembly. According to claim 4, the linear slider bearing is hinged to the connecting rod. According to claim 5, the linear slider bearing is fixedly connected to the connecting member (2), and the linear slider bearing is driven to move by the connecting rod.

7. The door module according to claim 1, characterized in that: The utility model comprises a faucet, a support plate and a roller. The size and shape of the faucet can be changed according to actual needs. The support plate is fixedly connected to the faucet, and the roller is fixedly connected to the support plate.

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