Medical bed bed board horizontal motion driving device and medical bed

Abstract

The utility model provides a kind of medical bed bed board horizontal motion driving device, it is characterized in that, including: power generation mechanism, including motor support and motor, the shell of the motor and the motor support fixed connection, the output shaft of the motor can be rotated relative to the motor support;Friction wheel assembly, the friction wheel assembly is cylindrical, and the output shaft of the motor is fixed connection, rotates with the output shaft of the motor, the outer surface of the friction wheel assembly and the lower surface of the medical bed bed board contact, can be driven by friction force to make the medical bed do translational motion when rotating.The utility model provides medical bed bed board horizontal driving device simple structure, it is convenient to maintain.

Description

Technical Field

[0001] This disclosure relates to the medical field, specifically to a horizontal motion drive device for a medical bed board and a corresponding medical bed. Background Technology

[0002] Existing horizontal drive structures for medical bed slabs utilize ball screws and synchronous belts. While these technologies are relatively mature and meet requirements for horizontal motion accuracy and stability, they are also relatively complex, require high assembly precision, are costly, and are cumbersome to maintain. Therefore, the industry has been focusing on alternative horizontal drive methods for medical bed slabs. Utility Model Content

[0003] The purpose of this invention is to provide a horizontal movement drive device for a medical bed board and a corresponding medical bed, which has a simple structure and is easy to maintain.

[0004] According to an exemplary embodiment of this disclosure, a horizontal movement drive device for a medical bed board is provided, comprising: a power generating mechanism including a motor support and a motor, wherein the housing of the motor is fixedly connected to the motor support, and the output shaft of the motor is rotatable relative to the motor support; and a friction wheel assembly, wherein the friction wheel assembly is cylindrical and fixedly connected to the output shaft of the motor, and rotates with the output shaft of the motor, wherein the outer surface of the friction wheel assembly contacts the lower surface of the medical bed board, and can drive the medical bed to perform translational movement through friction during rotation.

[0005] According to an exemplary embodiment of this disclosure, the outer surface of the friction wheel assembly is covered with a rubber material.

[0006] According to an exemplary embodiment of this disclosure, the output shaft of the motor and the friction wheel assembly are fixedly connected by an expansion sleeve.

[0007] According to an exemplary embodiment of this disclosure, the motor support and the motor are fixedly connected by a motor connector.

[0008] According to an exemplary embodiment of the present disclosure, the friction wheel is sleeved on the outside of the motor, the motor is located in the inner cavity of the friction wheel assembly, the motor support is located outside the inner cavity, and the motor connecting seat extends into the inner cavity; the inner surface of one end of the friction wheel assembly is connected to the motor connecting seat through a first bearing, and the outer surface of the other end is connected to the support seat through a second bearing, and the expansion sleeve is located inside the other end of the friction wheel assembly.

[0009] According to an exemplary embodiment of this disclosure, the device further includes an encoder mounted on the motor.

[0010] According to an exemplary embodiment of the present disclosure, a medical bed is provided, the medical bed comprising: a bed board for supporting a patient; and a horizontal movement drive device for the bed board of any of the aforementioned medical beds.

[0011] According to an exemplary embodiment of the present disclosure, the medical bed further includes a bed frame, the bed board is mounted on the bed frame and can slide relative to the bed frame along the length direction of the bed board, and a position sensor is also mounted on the bed frame for sensing the relative position of the bed board and the bed frame.

[0012] According to an exemplary embodiment of this disclosure, the horizontal movement drive device for the medical bed board is fixedly installed on the bed frame, and the horizontal movement drive device for the medical bed board is fixedly connected to the bed frame below by an elastic element and / or a vertical height adjustment mechanism.

[0013] According to an exemplary embodiment of this disclosure, the device further includes an encoder mounted on the motor; the medical bed further includes a processing device, and both the encoder and the position sensor are electrically connected to the processing device.

[0014] According to exemplary embodiments of the present disclosure, a device with a simple structure for driving the horizontal movement of a medical bed board is provided. Attached Figure Description

[0015] The following figures are for illustrative purposes only and do not limit the scope of the present invention.

[0016] Figure 1 This is a schematic diagram of a medical bed that is an example of the present disclosure;

[0017] Figure 2 This is a schematic diagram of another medical bed exemplified by this disclosure;

[0018] Figure 3 This is a perspective view of an exemplary medical bed board horizontal movement drive device of this disclosure;

[0019] Figure 4 This is a schematic diagram of the structure of a medical bed board horizontal movement drive device, which is an example of this disclosure.

[0020] Label Explanation

[0021] 100 bed boards

[0022] 200 friction points

[0023] 300 Bed Board Horizontal Motion Drive Device

[0024] 400 base

[0025] 1 support base

[0026] 2 First bearing

[0027] 3-expansion sleeve

[0028] 4 motors - reducer

[0029] 5 Friction Wheel Assembly

[0030] 6 motor connectors

[0031] 7 Second Bearing

[0032] 8 motor supports

[0033] 9 encoders

[0034] 10 end caps Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following embodiments are provided to further illustrate this disclosure in detail. It should be understood that the specific embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit this disclosure.

[0036] In one exemplary embodiment, see Figure 1-4 This paper illustrates a horizontal movement drive device 300 for a medical bed board. The drive device 300 has an outer roller-like shape, and its outer surface is covered with a high-friction material, such as rubber, forming a friction roller. The friction roller contacts the lower surface of the medical bed board 100 through friction points 200. When the friction roller rotates, the friction force drives the bed board 100 to perform horizontal translational movement. In this embodiment, the outer surface of the friction roller is composed of a friction wheel assembly 5. The surface shape of the friction wheel assembly 5 is adapted to the shape of the lower surface of the bed board 100. This adapted shape forms several friction points 200, which provide sufficient friction force so that the rotation of the friction wheel assembly 5 can drive the translational movement of the bed board. Figure 1 A schematic diagram of the thin bed board 100 is shown in the figure. Figure 2 The diagram shows a schematic of a thick bed board 100. Thin bed boards, to ensure strength, have several bends in their cross-section, and their lower surface is also curved. Thick bed boards, however, do not require these bends, and their lower surface is smooth. To allow the surface shape of the friction wheel assembly 5 to be adaptable to different types of bed boards, forming the required friction points 200, the outer surface of the friction wheel assembly 5 is designed with a curved shape and two symmetrical protrusions. These protrusions can contact different types of bed boards 100, forming friction points 200. The bed board 100 is directly driven by the friction force of the roller surface, eliminating the need for belts or lead screws. This results in a relatively simple structure, reduced cost, and easier maintenance. For details on how the friction wheel roller can rotate, please refer to [link to relevant documentation]. Figure 4The friction wheel roller includes a power generating mechanism and a friction wheel assembly 5. The power generating mechanism includes a motor support 8 and a motor. The motor generally also includes a reducer, forming a motor-reducer 4. The motor housing and the motor support 8 are fixedly connected. The motor support 8 is directly or indirectly fixed to the base 400, ensuring that the motor housing is stationary relative to the base 400, allowing the motor output shaft to rotate relative to the base 400. The cylindrical friction wheel assembly 5 is fixedly connected to the motor output shaft, thus rotating with the motor output shaft. When the friction wheel assembly 5 rotates, its outer surface contacts the lower surface of the medical bed board, driving the medical bed to perform horizontal translational movement through friction. The friction wheel assembly can consist of a metal cylindrical element and a high-friction material covering it. The high-friction material can be rubber. The metal cylindrical element and the rubber material can be fixed together using an adhesive to ensure synchronous rotation. The adhesive is not mandatory; appropriate patterns or grooves can be used on the outer surface of the metal cylindrical element and the inner surface of the rubber material to achieve a tight bond between the rubber material and the metal cylindrical element, thus achieving synchronous movement. The design of the friction wheel assembly 5 ensures strength by connecting the metal cylindrical element to the motor output shaft. On the other hand, since rubber materials are prone to aging or wear, the rubber material can be replaced when aging or wear occurs, while the metal cylindrical element can continue to be used, thus saving costs.

[0037] In one exemplary embodiment, see further. Figure 1 , 4 First see Figure 4 The friction wheel assembly 5 is mounted outside the motor-reducer 4. This design results in a smaller overall volume, but this arrangement is not mandatory. The motor-reducer 4 can also be located outside the friction wheel assembly 5. For example, the motor-reducer 4 and the friction wheel assembly can be arranged in a straight line, as long as the motor housing remains stationary relative to the base 400. The friction wheel assembly 5 can be rotated by the motor output shaft. Figure 4Taking this positional relationship as an example, during assembly, the motor-reducer 4 is first installed in the inner cavity of the metal cylinder element of the friction wheel assembly 5. Then, the output shaft of the motor and the metal cylinder element of the friction wheel assembly 5 are fixedly connected by the expansion sleeve 3. Finally, the space of the friction wheel assembly 5 is sealed by the end cover 10. The expansion sleeve connection has many advantages. First, it is easy to disassemble. Second, it is easy to adjust the tightness. It can firmly fix the output shaft of the motor to the inner wall of the metal cylinder element of the friction wheel assembly 5 and ensure that the output shaft of the motor is in the axial position of the metal cylinder element, thus improving the rotational stability. In order to fix the friction wheel assembly 5 rotatably and ensure the rotational stability, the motor support 8 is fixedly connected to the motor housing through the motor connecting seat 7. The motor support 8 is located outside the inner cavity of the friction wheel assembly 5, while the motor connecting seat 7 extends into the inner cavity to fix the motor housing. The inner surface of the friction wheel assembly 5 near the motor support 5 is connected to the outer surface of the motor connecting seat 6 through the first bearing 2. The outer surface of the friction wheel assembly 5 near the motor output shaft is connected to the support seat 1 through the second bearing 7. Two bearings fix the position of the friction wheel assembly 5, allowing it to rotate at the desired position. The support base 1, motor support 8, and motor connecting base 6 are all directly and indirectly fixedly connected to the base 400, meaning they remain relatively stationary when the motor rotates. Thus, the fixed and rotating components are connected together via the first bearing 2, the second bearing 7, and the expansion sleeve 3. The fixed components include the support base 1, the motor support 8, and the motor connecting base 6, while the rotating component includes the friction wheel assembly 5. To record the motor's rotation data, an encoder 9 is also included, located within the cavity of the friction wheel assembly 5 and mounted on the motor. The motor's rotation data can be further converted into bed board position data.

[0038] In one exemplary embodiment, see Figure 1-4A medical bed is provided, comprising a bed board 100 for supporting a patient, a bed frame, and the aforementioned horizontal movement drive device for the bed board. The bed board 100 is mounted on the bed frame and can slide relative to the bed frame along the length of the bed board. The horizontal movement drive device is fixed to a base 400, which is a component of the bed frame. More specifically, a support base 1, a motor support 8, and a base 400 are fixedly connected, such that the fixed components support base 1, motor support 8, and motor connecting base 6 are stationary relative to the base 400, while the rotating components expansion sleeve 3 and friction wheel assembly 5 rotate relative to the base 400, driving the translation of the bed board 100. During the movement of the bed board 100, its position needs to be known. Although the encoder can record the motor's rotation data and thus calculate the bed board's translational position, slippage is unavoidable during transmission because the friction wheel assembly 5 propels the bed board 100 by friction. Slippage causes deviations in the position of the bed board 100 inferred from the encoder 9. Therefore, a position sensor (not shown) is also installed on the bed frame to sense the relative position of the bed board 100 and the bed frame. The position sensor can be a potentiometer, a Hall sensor, or a grating sensor. Data from both the encoder 9 and the position sensor are transmitted to the same processor. On one hand, the position sensor data can be used to correct the data inferred by the encoder 9; on the other hand, if the two sets of data frequently deviate, it indicates that slippage is occurring too frequently and severely, requiring equipment adjustment or replacement of the rubber material. For a transmission method relying on friction, the contact force between the rubber material and the bed board 100 is crucial, and the friction force must be maintained at the required level. In this embodiment, on the one hand, the height of the base 400 can be adjusted using a height adjustment mechanism, while the bed board 100 is fixed to the bed frame and its height remains constant. This adjustment will adjust the relative distance between the base 400 and the bed board 100, thereby adjusting the contact force between the friction wheel assembly 5 and the bed board 100. This adjustment can be manual, using high-precision adjustment mechanisms such as screws, ball screws, or racks. Furthermore, an elastic device, such as a spring or leaf spring, can be added between the base 400 and the horizontal movement drive device of the medical bed board. This elastic device provides an upward force to the friction wheel assembly 5, ensuring a fixed contact force between the drive device and the bed board 100, thus guaranteeing the magnitude of the friction force.

[0039] In one exemplary embodiment, see further. Figure 1-4 The motor-reducer 4 and the friction wheel assembly 5 are connected by the inner and outer expansion sleeves 4, which makes the friction wheel assembly 5 rotate and drive the bed board 100 to make linear reciprocating motion through surface friction. The outer surface material of the friction wheel assembly 5 is made of polymer material and is spherical, which is easier to contact and can more easily meet the maximum scanning stroke of the diagnostic bed in the medical bed.

[0040] The medical bed disclosed herein, which utilizes a friction wheel roller for horizontal movement of the bed board, has at least the following characteristics:

[0041] 1. Low cost;

[0042] 2. Modular design, high reliability;

[0043] 3. Simple structure, flexible and reliable;

[0044] 4. Easy to maintain;

[0045] 5. Increase the effective scanning range.

[0046] In this disclosure, directional terms such as "up," "down," "left," and "right" are merely illustrative relative directions and do not represent the direction of gravity in use. Furthermore, the terms "first," "second," etc., used in this disclosure are for distinguishing one element from another and do not imply sequentiality or importance. Additionally, in the following description, when referring to the accompanying drawings, unless otherwise explained, the same reference numerals in different drawings denote the same or similar elements. The above definitions are for explanation and illustration only and should not be construed as limiting this disclosure. Furthermore, the nouns and pronouns relating to people in this disclosure are not limited to specific genders.

[0047] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0048] To keep the drawings concise, each drawing only schematically shows the parts relevant to this disclosure, and they do not represent the actual structure of the product. Furthermore, to facilitate understanding, in some drawings, components with the same structure or function are shown only schematically, or only one is labeled.

[0049] The above description is merely a preferred embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A medical bed deck horizontal movement driving device, characterized by, include: A power generating mechanism includes a motor support and a motor, wherein the housing of the motor is fixedly connected to the motor support, and the output shaft of the motor is rotatable relative to the motor support; The friction wheel assembly is cylindrical and fixedly connected to the output shaft of the motor. It rotates with the output shaft of the motor. The outer surface of the friction wheel assembly is in contact with the lower surface of the medical bed board. When rotating, it can drive the medical bed to make translational movements through friction.

2. The medical bed deck horizontal movement driving device according to claim 1, characterized in that: The outer surface of the friction wheel assembly is covered with rubber material.

3. The medical bed deck horizontal movement driving device according to claim 1, characterized in that: The output shaft of the motor and the friction wheel assembly are fixedly connected by an expansion sleeve.

4. The bed deck horizontal motion drive apparatus according to claim 3, characterized by: The motor support and the motor are fixedly connected by a motor connector.

5. The bed deck horizontal motion drive apparatus according to claim 4, characterized by: The friction wheel is sleeved on the outside of the motor, the motor is located in the inner cavity of the friction wheel assembly, the motor support is located outside the inner cavity, and the motor connecting seat extends into the inner cavity; the inner surface of one end of the friction wheel assembly is connected to the motor connecting seat through a first bearing, and the outer surface of the other end is connected to the support seat through a second bearing, and the expansion sleeve is located inside the other end of the friction wheel assembly.

6. The bed deck horizontal motion drive apparatus according to claim 1, wherein The device also includes an encoder mounted on the motor.

7. A medical bed characterized by The medical bed includes: The bed board is used to support the patient; The horizontal motion drive device for the medical bed board according to any one of claims 1-6.

8. The bed of claim 7 wherein: The medical bed also includes a bed frame, on which the bed board is mounted and can slide relative to the bed frame along the length of the bed board. The bed frame is also equipped with a position sensor for sensing the relative position of the bed board and the bed frame.

9. The bed of claim 8 wherein: The horizontal movement drive device of the medical bed board is fixedly installed on the bed frame, and the horizontal movement drive device of the medical bed board is fixedly connected to the bed frame below through an elastic element and / or a vertical height adjustment mechanism.

10. The hospital bed of claim 9, wherein: The device also includes an encoder mounted on the motor; The medical bed also includes a processing device, and the encoder and the position sensor are both electrically connected to the processing device.

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