Medical bed
By designing a rotating body with a specific angle and a threaded connection, the simple mechanical structure of the medical bed is realized, the complex dynamic structure in the prior art is solved, and the effective tilt and lifting functions of the bed body are realized, which reduces costs and improves reliability.
Patent Information
- Application Number
- CN202420602021.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-03-26
AI Technical Summary
When existing medical beds realize lifting and tilting functions, the power structure and transmission structure are complex, resulting in high cost and low reliability.
By designing a moving member, including the first rotating body and the second rotating body, the relative rotational movement of the bed is achieved by utilizing the angle between their cylindrical outer wall and the axis, thereby achieving the inclination function. At the same time, the third rotating body and the base are threaded to realize the lifting function of the bed.
The tilt and lifting functions of the hospital bed are realized through a simple mechanical structure, reducing costs and improving the reliability of the equipment.
Smart Images
Figure CN222983316U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of machinery, and more particularly, to a medical bed. Background Art
[0002] Medical beds, especially those used in surgical scenarios, not only need to be able to be lifted, but also need to have an inclination function. The inclination function can be achieved by using a hydraulic or electric push rod to push the bed body to rotate around a rotating shaft, and the lifting function can be achieved by using a hydraulic or electric push rod to push the bed body to move along a guide rail. To achieve different motions, complex power structures and transmission structures are required. Simplifying the structure not only helps to reduce costs but also improves reliability. Summary of the Utility Model
[0003] In view of this, the present disclosure provides a medical bed that can be lifted and inclined.
[0004] According to an exemplary embodiment of the present disclosure, a medical bed includes: a bed body for carrying a patient; a moving member, the upper end of which is connected to the bed body; and a base for supporting the weight of the bed body and the moving member. Wherein, the moving member includes: a first rotating body having a cylindrical outer wall, the cylindrical outer wall of the first rotating body having a first axis, the first rotating body being rotatable about the first axis, the plane of the lower end surface of the cylindrical outer wall of the first rotating body having an angle with the first axis, the angle being angle a, and the angle a being less than 90 degrees; a second rotating body having a cylindrical outer wall, the cylindrical outer wall of the second rotating body having a second axis, the second rotating body being rotatable about the second axis, the plane of the upper end surface of the cylindrical outer wall of the second rotating body also having an angle of the angle a with the second axis, and the lower end surface of the cylindrical outer wall of the first rotating body and the upper end surface of the cylindrical outer wall of the second rotating body being in contact and rotatably connected relative to each other.
[0005] According to an exemplary embodiment of the present disclosure, the bed body and the first rotating body of the moving member are connected by a first shaft and are rotatable relative to each other about the first axis.
[0006] According to an exemplary embodiment of the present disclosure, the first rotating body and the second rotating body are rotatable relative to each other through a second shaft.
[0007] According to an exemplary embodiment of the present disclosure, the moving member further includes a third rotating body, the outer side of the upper end of the third rotating body having an external thread, and the inner side of the lower end of the second rotating body having an internal thread, the external thread and the internal thread cooperating with each other such that the second rotating body and the third rotating body can move relatively away from and close to each other along the direction of the second axis when rotating relative to each other about the second axis.
[0008] According to an exemplary embodiment of the present disclosure, balls are provided between the internal thread and the external thread.
[0009] According to an exemplary embodiment of the present disclosure, the third rotating body and the base rotate relative to each other about the second axis through a third shaft.
[0010] According to an exemplary embodiment of the present disclosure, the angle a is greater than 45 degrees and less than 85 degrees.
[0011] According to an exemplary embodiment of the present disclosure, the angle a is greater than 60 degrees and less than 80 degrees.
[0012] According to an exemplary embodiment of the present disclosure, the moving member further includes: a fourth rotating body having a cylindrical outer wall, the cylindrical outer wall of the fourth rotating body having a fourth axis, the fourth rotating body being rotatable about the fourth axis, the plane of the lower end surface of the cylindrical outer wall of the fourth rotating body having an included angle with the fourth axis, the included angle being angle b, and angle b being less than 90 degrees; a fifth rotating body having a cylindrical outer wall, the cylindrical outer wall of the fifth rotating body having a fifth axis, the fifth rotating body being rotatable about the fifth axis, the plane of the upper end surface of the cylindrical outer wall of the fifth rotating body also having an included angle of angle b with the fifth axis, and the lower end surface of the cylindrical outer wall of the fourth rotating body and the upper end surface of the cylindrical outer wall of the fifth rotating body being in contact and rotatably connected relative to each other.
[0013] According to an exemplary embodiment of the present disclosure, the angle b is greater than 70 degrees and less than 80 degrees.
[0014] Through the embodiments of the present disclosure, the tilting function of the hospital bed is realized through a simple mechanical structure. Description of the Drawings
[0015] The following will make the above and other features and advantages of the present utility model clearer to those of ordinary skill in the art by describing the preferred embodiments of the present utility model in detail with reference to the drawings. In the drawings:
[0016] Figure 1 is a schematic exploded view of the components of the exemplary medical bed of the present disclosure;
[0017] Figure 2 is a schematic view of the exemplary medical bed after assembly.
[0018] Among them, the reference numerals are as follows:
[0019] 1.1 Bed body 1.2 Rotating body B 1.3 Rotating body A 1.4 Rotating body A 1.5 Base Detailed Description of the Embodiments
[0020] To make the objectives, technical solutions, and advantages of the present disclosure clearer, the following examples are given to further elaborate on the present disclosure in detail. It should be understood that the specific implementation manners described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.
[0021] In an exemplary embodiment, a medical bed of the present disclosure includes: a bed body for carrying a patient. The medical bed further includes a moving member for supporting the weight of the bed body, the upper end of the moving member being connected to the bed body for supporting the weight of the bed body. The moving member includes a first rotating body and a second rotating body, both the first rotating body and the second rotating body being rotatable about their respective axes. The plane of the lower end surface of the cylindrical outer wall of the first rotating body forms an angle with the first axis of the cylindrical outer wall thereof, the angle being angle a, and angle a being less than 90 degrees. The plane of the upper end surface of the cylindrical outer wall of the second rotating body also forms an angle of angle a with the second axis of the cylindrical outer wall thereof, and moreover, the lower end surface of the first rotating body and the upper end surface of the second rotating body are in contact and can be connected by a relative rotational movement. Here, the cylindrical outer walls of the first rotating body and the second rotating body in contact have inclined surfaces. Thus, when the first rotating body and the second rotating body rotate relative to each other about their respective axes, the first axis and the second axis will form an angle, thereby achieving the purpose of tilting the bed body. The medical bed further includes a base for supporting the weight of the bed body and the moving member. For the selection of angle a, it can be selected to be greater than 45 degrees and less than 85 degrees. More preferably, angle a is greater than 60 degrees and less than 80 degrees. If the angle is too small, the requirement for the tilting angle cannot be achieved, and if the angle is too large, the strength requirement for the hospital bed is relatively high.
[0022] In an exemplary embodiment, the moving member further includes a third rotating body. The outer side of the upper end of the third rotating body has an external thread, and the inner side of the lower end of the second rotating body has an internal thread. The external thread and the internal thread cooperate with each other, such that when the second rotating body and the third rotating body rotate relative to each other about the second axis, they can move relatively away from and close to each other along the direction of the second axis, thereby achieving the lifting of the bed body. To reduce friction, rolling elements such as balls are provided between the internal thread and the external thread.
[0023] In an exemplary embodiment, the bed body is directly connected to the first rotating body of the moving member through a first shaft and can rotate relative to the first axis through the first shaft, thereby achieving the rotational movement of the bed body relative to the first axis. The first rotating body and the second rotating body rotate relative to each other through a second shaft, and this movement is completed around their respective axes, thereby achieving the tilting of the bed body relative to the second axis. The third rotating body and the base rotate relative to each other around the second axis through a third shaft, thereby achieving the rotational movement of the bed body relative to the second axis. The connection manners here are only exemplary. There may be other components between the bed body and the first rotating body, and there may also be other components between the third rotating body and the base.
[0024] In an exemplary embodiment, the moving member further includes: a fourth rotating body having a cylindrical outer wall. The cylindrical outer wall of the fourth rotating body has a fourth axis, and the fourth rotating body is rotatable about the fourth axis. The plane of the lower end face of the cylindrical outer wall of the fourth rotating body forms an angle with the fourth axis, and the angle is angle b, where angle b is less than 90 degrees; a fifth rotating body having a cylindrical outer wall. The cylindrical outer wall of the fifth rotating body has a fifth axis, and the fifth rotating body is rotatable about the fifth axis. The plane of the upper end face of the cylindrical outer wall of the fifth rotating body also forms an angle of angle b with the fifth axis. Moreover, the lower end face of the cylindrical outer wall of the fourth rotating body and the upper end face of the cylindrical outer wall of the fifth rotating body are in contact and can be rotationally and relatively movably connected. The structures and functions of the fourth rotating body and the fifth rotating body are similar to those of the first rotating body and the second rotating body, and can further tilt the bed body. When the first rotating body, the second rotating body, the fourth rotating body, and the fifth rotating body are used together, angles a and b can be set relatively small. For example, angle b is greater than 70 degrees and less than 80 degrees.
[0025] In an exemplary embodiment, specifically taking a hospital bed for functions such as angiography, interventional surgery, radiotherapy, etc. as an example, this type of hospital bed needs to have functions of lifting, rotating, and tilting. Different from realizing the tilting function by pushing the bed body to rotate around a rotating shaft through a hydraulic or electric push rod, and realizing the lifting function by pushing the bed body to move along a guide rail through a hydraulic or electric push rod, in this embodiment, referring to Figure 1 , Figure 2 , a method is provided to realize the front-back and left-right tilting functions through the cooperation of two tilting rotating shafts, and to realize the lifting function through screw drive. The hospital bed is composed of a bed body 1.1, a rotating body B 1.2, a rotating body A 1.3, a rotating body C 1.4, a base 1.5, etc. The lower end face of the rotating body B 1.2 and the upper end face of the rotating body A 1.3 are each tilted by an angle a, and the lower end face of the rotating body B 1.2 and the upper end face of the rotating body A 1.3 are in close cooperation. An internal thread is provided at the lower part of the rotating body A 1.3, and an external thread that mates with the internal thread of the rotating body A 1.3 is provided at the upper part of the rotating body C 1.4. The rotating body A 1.3 is sleeved outside the rotating body C 1.4, and balls can be provided between the internal and external threads to reduce friction. The bed body 1.1 and the rotating body B 1.2 are connected by a bearing (not shown) and can rotate relative to each other. The rotating body B 1.2 and the rotating body A 1.3 are connected by a bearing (not shown) on an inclined plane and can rotate relative to each other. The rotating body A 1.3 and the rotating body C 1.4 are connected by a thread, and rolling elements can be provided between the threads and can be helically telescoped relative to each other. The rotating body C 1.4 and the base 1.5 are connected by a bearing (not shown) and can rotate relative to each other. The exploded views of each component are as shown in Figure 1 shown, and the hospital bed after assembly is as shown in Figure 2 shown, in Figure 2When the rotating body B1.2 and the rotating body A 1.3 are in contact in this way, the hospital bed is in a horizontal position both longitudinally and laterally.
[0026] The longitudinal or lateral tilting function of the bed body 1.1 is achieved by the rotational movement around the axis between the rotating body A 1.3 and the rotating body B1.2. It can also be a combination of longitudinal and lateral tilting. The magnitude of the tilt can be controlled according to needs by the amount of rotation of each axis. Here, longitudinally refers to Figure 2 the left - right direction in [description], that is, the length direction of the hospital bed, and laterally refers to Figure 2 the front - back direction in [description], that is, the width direction of the hospital bed. Those skilled in the art can understand that in Figure 2 the state shown, when the side wall with the highest height of the rotating body B1.2 and the side wall with the lowest height of the rotating body A 1.3 are in corresponding positions (on a vertical straight line), the bed body 1.1 will remain horizontal. When the bed body 1.1 does not rotate, but the rotating body A1.3 and the rotating body B1.2 rotate relative to each other around their respective axes, the bed body 1.1 will tilt. For example, in Figure 2 the state shown, if only the rotating body A1.3 rotates 180 degrees and other components do not rotate, then the highest side wall of the rotating body A1.3 and the highest side wall of the rotating body B1.2 are in corresponding positions on the rightmost side (on a vertical straight line), and the left side of the bed body 1.1 will tilt downward. Correspondingly, in Figure 2 the state shown, if only the rotating body B1.2 rotates 180 degrees and other components do not rotate, then the highest side wall of the rotating body A 1.3 and the highest side wall of the rotating body B1.2 are in corresponding positions on the leftmost side (on a vertical straight line), and the left side of the bed body 1.1 will tilt upward. Similarly, by adjusting the relative positions of the rotating body A1.3 and the rotating body B1.2 so that the highest side walls of the rotating body A 1.3 and the rotating body B1.2 are in corresponding positions at different locations, the purpose of tilting the bed body 1.1 in different directions can be achieved, and this tilt is the maximum tilt of this angle.
[0027] The lifting function of the bed body is achieved by the rotational movement between the rotating body A 1.3 and the rotating body C1.4. By relying on the mutual cooperation between the internal thread of the rotating body A1.3 and the external thread of the rotating body C1.4, the purpose of telescoping is achieved. In Figure 2 the attitude shown, those skilled in the art can easily understand that if only the rotating body A1.3 and the rotating body C1.4 rotate, and other components do not rotate, then the bed body 1.1 can move up and down.
[0028] The rotation of the shaft (not shown) between the base 1.5 and the rotating body C1.4 realizes the 360° indexing function of the bed body. The rotation range can be limited as needed. The limiting method can use the rotation angle of the motor to stop rotating after a specific angle, or a mechanical locking part or a stop part can be used, which is not limited herein. In this embodiment, each power element, transmission component, control element, cable, etc. can be placed inside the rotating body, and there is no need to add an additional housing outside. Of course, for aesthetics and safety, a retractable housing is also optional.
[0029] The specific embodiments of the present disclosure at least have the following characteristics: simple structure, safe and reliable, large rigidity, low cost, simple and beautiful, etc.
[0030] In the present disclosure, the orientation words such as "upper, lower, left, right" are only exemplary relative directions in the drawings and do not represent the direction of gravity in the use state. In addition, the terms "first", "second", etc. used in the present disclosure are used to distinguish one element from another and do not have sequentiality and importance. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same reference numerals in different drawings represent the same or similar elements. The above definitions are only used to explain and illustrate the present disclosure and should not be construed as a limitation to the present disclosure. In addition, the nouns and pronouns related to people in the present disclosure are not limited to specific genders.
[0031] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.
[0032] To make the drawings concise, only the parts related to the present disclosure are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some figures, for components with the same structure or function, only one of them is schematically shown, or only one of them is labeled.
[0033] The above are only the preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.
Claims
1. A medical bed, characterized in that: include: The bed is used to carry the patient; A moving part, the upper end of which is connected to the bed; A base, used for supporting the weight of the bed and the moving parts; Wherein, the moving parts include: A first rotating body, having a cylindrical outer wall, the cylindrical outer wall of the first rotating body having a first axis, the first rotating body can rotate around the first axis, the plane where the lower end surface of the cylindrical outer wall of the first rotating body is located and the first axis have an angle, the angle is angle a, and the angle a is less than 90 degrees; The second rotating body has a cylindrical outer wall, and the cylindrical outer wall of the second rotating body has a second axis. The second rotating body can rotate around the second axis. The plane where the upper end surface of the cylindrical outer wall of the second rotating body is located and the second axis also have an angle a, and the lower end surface of the cylindrical outer wall of the first rotating body and the upper end surface of the cylindrical outer wall of the second rotating body are fitted and connected and can rotate relative to each other.
2. The medical bed according to claim 1, characterized in that: The bed and the first rotating body of the moving part are connected through a first axis and can rotate relatively around the first axis.
3. The medical bed according to claim 1, characterized in that: The first rotating body and the second rotating body rotate relative to each other via a second axis.
4. The medical bed according to claim 1, characterized in that: The moving part also includes a third rotating body, the outer side of the upper end of the third rotating body has an external thread, and the inner side of the lower end of the second rotating body has an internal thread, the external thread and the internal thread cooperate with each other, so that the second rotating body and the third rotating body can move relatively away from and approach along the direction of the second axis when they rotate relative to each other around the second axis.
5. The medical bed according to claim 4, characterized in that: A ball is arranged between the internal thread and the external thread.
6. The medical bed according to claim 1, characterized in that: The third rotating body and the base rotate relative to each other around the second axis via a third shaft.
7. The medical bed according to claim 1, characterized in that: The angle a is greater than 45 degrees and less than 85 degrees.
8. The medical bed according to claim 7, characterized in that: The angle a is greater than 60 degrees and less than 80 degrees.
9. The medical bed according to claim 1, characterized in that: in, The moving part also includes: A fourth rotating body, having a cylindrical outer wall, the cylindrical outer wall of the fourth rotating body having a fourth axis, the fourth rotating body can rotate around the fourth axis, the plane where the lower end surface of the cylindrical outer wall of the fourth rotating body is located and the fourth axis have an angle, the angle is angle b, and the angle b is less than 90 degrees; The fifth rotating body has a cylindrical outer wall, and the cylindrical outer wall of the fifth rotating body has a fifth axis. The fifth rotating body can rotate around the fifth axis. The plane where the upper end surface of the cylindrical outer wall of the fifth rotating body is located and the fifth axis also have an angle b, and the lower end surface of the cylindrical outer wall of the fourth rotating body and the upper end surface of the cylindrical outer wall of the fifth rotating body are fitted and connected and can rotate relative to each other.
10. The medical bed according to claim 9, characterized in that: The angle b is greater than 70 degrees and less than 80 degrees.