A lifting support mechanism and a medical device

Abstract

The present invention relates to a lifting support mechanism, which includes a base body, a lifting swing arm, a component carrier, a balance spring, a cam and a pulling rope. The first end of the lifting swing arm is hinged to the base body through a lifting rotating shaft; the component carrier is connected to the second end of the lifting swing arm; the cam is fixedly arranged on the base body, and the center of rotation of the cam is located on the axis of the lifting rotating shaft; one end of the pulling rope is connected to the component carrier, and the other end is connected to the second end of the balance spring; wherein, when the lifting swing arm is in a vertical state, the pulling rope is tangent to the outer contour of the cam; when the lifting swing arm descends, the pulling rope winds around the outer contour of the cam and pulls the balance spring to elongate, so that the moment generated by the elastic force of the balance spring at the lifting rotating shaft is always equal to the moment generated by the component carrier and the component to be supported at the lifting rotating shaft. This lifting support mechanism has the advantages of simple and compact structure and small occupied space. The present invention also relates to a medical device.

Description

Technical Field

[0001] The present invention relates to the technical field of medical device design and production, and particularly relates to a lifting support mechanism and a medical device. Background Art

[0002] Taking an ultrasonic scanning device in the medical device field as an example for illustration, a human-machine interaction panel is provided in the ultrasonic scanning device, and the human-machine interaction panel is supported by a lifting support mechanism. Currently, most of the lifting support mechanisms are parallel four-bar linkages. Since the angles of the linkages can be guaranteed to be unchanged during the lifting process of the parallel four-bar linkage, generally the human-machine interaction panel is installed on the linkages. To improve the user experience, a spring is usually provided inside the four-bar linkage to offset the self-weight of the human-machine interaction panel. With a little force from the user, the human-machine interaction panel can be lifted or lowered. When the hand is released, the human-machine interaction panel can hover at the adjusted position.

[0003] However, when operating the human-machine interaction panel to lift or lower, the hand will hold the panel for operation. During the process of the hand holding the lifting panel to lift or lower, the angle of the panel can be maintained by itself. Therefore, there is no need to use a complex parallel four-bar structure to maintain the panel angle and achieve the purpose of lifting or lowering. In addition, when the human-machine interaction panel needs to be adjusted in yaw angle and pitch angle while lifting or lowering, additional rotating shafts need to be added, which further increases the complexity of the entire lifting support mechanism. Summary of the Invention

[0004] One object of the present invention is to provide a lifting support mechanism with a compact and simple structure, which can always balance the torque generated by the component to be supported during the lifting movement of the component to be supported.

[0005] Another object of the present invention also lies in providing a medical device using the above lifting support mechanism.

[0006] To achieve the above object, the lifting support mechanism provided by the present invention includes:

[0007] A seat body;

[0008] A lifting swing arm, the first end of the lifting swing arm is hinged to the seat body through a lifting rotating shaft;

[0009] A component carrier, the component carrier is connected to the second end of the lifting swing arm;

[0010] A balance spring, the first end of the balance spring is connected to the seat body;

[0011] A cam, the cam is fixedly arranged on the seat body, and the rotation center of the cam is located on the axis of the lifting rotating shaft;

[0012] A pull rope, one end of the pull rope is connected to the component carrier, and the other end is connected to the second end of the balance spring; wherein,

[0013] When the lifting swing arm is in the vertical state, the pull rope is tangent to the outer contour of the cam, and the torque generated by the elastic force of the spring at the lifting rotating shaft is equal to the torque generated by the component carrier and the component to be supported at the lifting rotating shaft; when the lifting swing arm descends, the pull rope winds around the outer contour of the cam and pulls the spring to elongate, so that the torque generated by the elastic force of the spring at the lifting rotating shaft is always equal to the torque generated by the component carrier and the component to be supported at the lifting rotating shaft.

[0014] Preferably, when the lifting swing arm is in the vertical state: the stretching amount of the balance spring is S0, and the point where the pull rope is tangent to the cam is point A; when the lifting swing arm descends to a position where the angle with the vertical plane is θ, the point where the pull rope is tangent to the cam is point B, and the distance between point B and the rotation center of the cam is the polar radius, and the polar radius is ρ(θ), and the following torque balance equation holds:

[0015] Wherein, k is the elastic coefficient of the balance spring, m is the total mass of the component carrier and the component to be supported, g is the acceleration due to gravity, and L is the length of the lifting swing arm.

[0016] Preferably, the balance spring is built in the seat body, and the bottom end of the balance spring is fixedly connected to the base, and the top end is connected to the pull rope.

[0017] Preferably, the connection point of the pull rope and the balance spring is located on the central axis of the balance spring.

[0018] Preferably, the lifting swing arm includes two swing arm monomers that are symmetrically arranged left and right and spaced apart, and the cam is arranged between the two swing arm monomers.

[0019] Preferably, the component carrier is rotationally connected to the second end of the lifting swing arm through a pitching rotating shaft, and the axis of the pitching rotating shaft is parallel to the axis of the lifting rotating shaft.

[0020] Preferably, the component carrier includes a pitching support member and a yaw support member. The yaw support member is provided with an installation portion for installing the component to be supported. The pitching support member is rotationally connected to the second end of the lifting swing arm through the pitching rotating shaft. The yaw support member is rotationally connected to the pitching support member through a yaw rotating shaft, and the axis of the yaw rotating shaft is perpendicular to the axis of the pitching rotating shaft.

[0021] Preferably, a groove adapted to the pull rope is further provided on the outer contour of the cam.

[0022] Preferably, the pull rope is a metal rigid rope.

[0023] The medical device provided in the present invention includes a human-machine interaction panel and the lifting and supporting mechanism disclosed in any one of the above, and the human-machine interaction panel is installed on the component carrier.

[0024] Preferably, the medical diagnostic device is an ultrasonic diagnostic device.

[0025] In the above lifting and supporting mechanism, when the lifting swing arm is in a vertical state, the pull rope is tangent to the outer contour of the cam, and the torque generated by the elastic force of the spring at the lifting rotating shaft is equal to the torque generated by the component carrier and the component to be supported at the lifting rotating shaft. As the lifting swing arm descends, the torque generated by the component carrier and the component to be supported at the lifting rotating shaft will gradually increase. At the same time, the pull rope is also wound around the outer contour of the cam, and thus the pull rope further pulls the balance spring, and the torque generated by the elastic force of the balance spring at the lifting rotating shaft also gradually increases, so as to achieve the purpose that the torque generated by the elastic force of the spring at the lifting rotating shaft is always equal to the torque generated by the component carrier and the component to be supported at the lifting rotating shaft.

[0026] It can be seen that the lifting and supporting mechanism disclosed in the present invention can always balance the torque generated by the component to be supported and the component carrier during the lifting process of the component to be supported through the cooperation of the lifting swing arm, the pull rope, the cam and the balance spring. The user can make the component to be supported reach the appropriate position with only a very small force, and the component to be supported can be suspended after releasing the hand, effectively improving the user's feel. Compared with the complex parallelogram linkage mechanism, the lifting and supporting mechanism disclosed in the present invention has the advantages of simple and compact structure and small occupied space. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of the lifting and supporting mechanism disclosed in an embodiment of the present invention at an angle;

[0028] Figure 2 is a schematic structural diagram of the lifting and supporting mechanism disclosed in an embodiment of the present invention at another angle;

[0029] Figure 3 is Figure 1 a schematic structural diagram of the lifting and supporting mechanism shown in after removing the outer shell of the base;

[0030] Figure 4 is a schematic structural diagram of the extreme radius of the cam;

[0031] Figure 5 It is a structural schematic diagram of the medical device disclosed in the present invention.

[0032] Among them, 1 is the seat body, 2 is the lifting swing arm, 3 is the component carrier, 4 is the balance spring, 5 is the cam, 6 is the pulling rope, 7 is the component to be supported, 8 is the pitching rotating shaft, 9 is the lifting rotating shaft, 31 is the yaw support member, 32 is the pitching support member, 001 is the human-machine interaction panel, 002 is the touch screen, 003 is the keyboard, 004 is the lifting strut, 005 is the base, and 006 is the lifting support mechanism. Specific embodiments

[0033] One of the cores of the present invention is to provide a lifting support mechanism that is structurally compact and concise, and can always balance the torque generated by the component to be supported during the lifting movement of the component to be supported.

[0034] Another core of the present invention is to provide a medical device using the above-mentioned lifting support mechanism.

[0035] Please first refer to Figure 1 and Figure 3 , the lifting support mechanism disclosed in the present invention includes a seat body 1, a lifting swing arm 2, a component carrier 3, a balance spring 4, a cam 5 and a pulling rope 6. The two ends of the lifting swing arm 2 are respectively the first end and the second end. The first end of the lifting swing arm 2 is hinged to the seat body 1 through the lifting rotating shaft 9. The component carrier 3 is connected to the second end of the lifting swing arm 2. The function of the component carrier 3 is to provide an installation basis for the component to be supported 7 (such as the human-machine interaction panel). The two ends of the balance spring 4 are respectively the first end and the second end. The first end of the balance spring 4 is connected to the seat body 1. One end of the pulling rope 6 is connected to the second end of the balance spring 4, and the other end is connected to the component carrier 3. The cam 5 is fixedly arranged on the seat body 1, and the center of rotation of the cam 5 is located on the axis of the lifting rotating shaft 9;

[0036] When the lifting swing arm 2 is in the vertical state, the pulling rope 6 is tangent to the outer contour of the cam 5, and the torque generated by the elastic force of the balance spring 4 at the lifting rotating shaft 9 is equal to the torque generated by the component carrier 3 and the component to be supported 7 at the lifting rotating shaft 9;

[0037] When the lifting swing arm 2 descends, the pulling rope 6 winds around the outer contour of the cam 5 and pulls the balance spring 4 to elongate, so that the torque generated by the elastic force of the balance spring 4 at the lifting rotating shaft 9 is always equal to the torque generated by the component carrier 3 and the component to be supported 7 at the lifting rotating shaft 9.

[0038] In the lifting support mechanism disclosed in the above embodiments, when the lifting swing arm 2 is in the vertical state, the pulling rope 6 is tangent to the outer contour of the cam 5, and the moment generated by the elastic force of the spring at the lifting rotating shaft 9 is equal to the moment generated by the component carrier 3 and the component to be supported 7 at the lifting rotating shaft 9. As the lifting swing arm 2 descends, the moment generated by the component carrier 3 and the component to be supported 7 at the lifting rotating shaft 9 will gradually increase. At the same time, the pulling rope 6 is also wound around the outer contour of the cam 5, and thus the pulling rope 6 further pulls the balance spring 4, and the moment generated by the elastic force of the balance spring 4 at the lifting rotating shaft 9 also gradually increases, so as to achieve the purpose that the moment generated by the elastic force of the spring at the lifting rotating shaft 9 is always equal to the moment generated by the component carrier 3 and the component to be supported 7 at the lifting rotating shaft 9.

[0039] It can be seen that in the lifting support mechanism disclosed in the above embodiments, by cooperating the lifting swing arm 2 with the pulling rope 6, the cam 5 and the balance spring 4, the moment generated by the component to be supported 7 and the component carrier 3 can always be balanced during the lifting process of the component to be supported 7. The user can make the component to be supported 7 reach the appropriate position with only a very small force, and the component to be supported 7 can be suspended after letting go, effectively improving the user's feel. Compared with the complex parallelogram linkage mechanism, the lifting support mechanism disclosed in the above embodiments has the advantages of simple and compact structure and small occupied space.

[0040] In order to prevent the pulling rope 6 from slipping off the outer contour of the cam 5, a groove body adapted to the pulling rope 6 is further provided on the outer contour of the cam 5 in the lifting support mechanism disclosed in this embodiment. It should be understood that in order to prevent the pulling rope 6 from shaking in the groove body and affecting the stability, the width of the groove body is preferably set to be equal to the diameter of the pulling rope 6, or slightly wider than the diameter of the pulling rope 6. The pulling rope 6 can be made of ultra-high molecular weight polyethylene rope. Ultra-high molecular weight polyethylene is a currently well-known material, which has excellent wear resistance and extremely small ductility, and is a rope without elasticity and with super wear resistance and tensile load-bearing performance; of course, the pulling rope 6 can also be a metal rigid rope. When the pulling rope 6 is a metal rigid rope, the manufacturing material of the cam 5 needs to be considered, and special attention should be paid to avoiding excessive wear between any one of the pulling rope 6 and the cam 5.

[0041] Those skilled in the art can understand that after selecting the balance spring 4, it is necessary to design and process the outer contour shape of the cam 5 according to the elastic coefficient of the balance spring 4. The following describes the design and processing method of the outer contour of the cam 5:

[0042] When the lifting swing arm 2 is in the vertical state: the elongation of the balance spring 4 is S0, and the tangent point of the pull rope 6 and the cam 5 at this time is point A. When the lifting swing arm 2 gradually descends from the vertical state, the cam 5 moves relative to the lifting swing arm 2. According to the principle of relative motion, it can also be understood that the lifting swing arm 2 is fixed and the cam 5 rotates in the opposite direction of the movement of the lifting swing arm 2. When the lifting swing arm 2 descends to a position where the angle between it and the vertical plane is θ, the tangent point of the pull rope 6 and the cam 5 is point B. The distance between point B and the rotation center O of the cam 5 is the polar radius, which is denoted as ρ(θ). As shown in Figure 4 shown, the length of the pull rope 6 wound around the cam 5 is If the elastic coefficient of the balance spring 4 is k, then the elastic force generated by the balance spring 4 at this time is F = k·(s0 + Δ s). The torque generated by the elastic force of the balance spring 4 at the lifting rotating shaft 9 should be the product of the elastic force and the force arm. At this time, the force arm of the elastic force of the spring relative to the lifting rotating shaft 9 is the polar radius of the cam 5. Therefore, the torque generated by the elastic force of the balance spring 4 is: M = Fρ(θ) = k(s0 + Δ s)ρ(θ). Since the torque generated by the balance spring 4 at the lifting rotating shaft 9 is equal to the torque generated by the component to be supported 7 and the component carrier 3 at the lifting rotating shaft 9, the balance equation can be listed as:

[0043] In the formula, m is the total mass of the component carrier 3 and the component to be supported 7, g is the acceleration due to gravity, and L is the length of the lifting swing arm 2. Except for ρ(θ) which is an unknown, the other parameters are all known numbers. Therefore, as long as a value is given to θ, the polar radius ρ(θ) of the cam 5 corresponding to this value can be solved. In the actual processing process, according to the processing accuracy requirements, a reasonable value interval of θ can be determined. For example, different precision cams 5 can be processed by taking values at intervals of 0.1°, 0.5°, or 1°. Those skilled in the art should understand that usually the value range of θ should be [0, π / 2].

[0044] In order to further optimize the technical solution in the above embodiment, in this embodiment, the seat body 1 has an outer shell, a hollow inner cavity is formed inside the outer shell, and the balance spring 4 is built into the hollow inner cavity of the seat body 1. Please refer to Figure 1 and Figure 3For reference, the bottom end of the balance spring 4 is fixedly connected to the base, and the top end of the balance spring 4 is connected to the pulling rope 6. This way enables the balance spring 4 not to be exposed outside the seat body 1, thereby further enhancing the structural compactness of the entire lifting support mechanism. In addition, the connection point between the pulling rope 6 and the balance spring 4 is located on the central axis of the balance spring 4. Specifically, a connecting member (not shown in the figure) can be provided at the top end of the balance spring 4, the pulling rope 6 can be connected to the connecting member, and the connection point between the pulling rope 6 and the connecting member is located on the central axis of the balance spring 4; thus, it is beneficial to enhance the stability during stretching.

[0045] The lifting swing arm 2 can be a single-column structure. In this case, the component carrier 3, the cam 5, and the pulling rope 6 all need to be offset to one side of the lifting swing arm 2, and its structural stability is poor. To improve the stability of the lifting support mechanism, the lifting swing arm 2 in this embodiment specifically includes two swing arm monomers that are symmetric about the left and right and arranged at intervals, and the cam 5 is arranged between the two swing arm monomers, as Figures 1 to 3 shown in.

[0046] In one embodiment, the component carrier 3 is rotatably connected to the second end of the lifting swing arm 2 through a pitching rotating shaft 8, as Figures 1 to 3 shown in. The axis of the pitching rotating shaft 8 is parallel to the axis of the lifting rotating shaft 9. The function of the pitching rotating shaft 8 is to provide a pitching degree of freedom for the component carrier 3, so that the operator can adjust the component 7 to be supported (such as a human-machine interaction panel) to an appropriate tilt angle;

[0047] In some cases, in addition to adjusting the pitching angle, the rotation angle (also called the yaw angle) of the component 7 to be supported in the horizontal plane also needs to be adjusted. For this reason, in the lifting support mechanism of this embodiment, the component carrier 3 specifically includes a pitching support member 32 and a yaw support member 31. The yaw support member 31 is provided with an installation part for installing the support component. The pitching support member 32 is rotatably connected to the second end of the lifting swing arm 2 through a pitching rotating shaft 8, and the yaw support member 31 is rotatably connected to the pitching support member 32 through a yaw rotating shaft. The axis of the yaw rotating shaft is perpendicular to the axis of the pitching rotating shaft 8, as Figures 1 to 3 shown in.

[0048] It should be noted that the specific form of the installation part for installing the support component is not limited, and can be adaptively adjusted according to the different components 7 to be supported during actual application. For example, the installation part can be an installation bracket with bolt holes or buckles, or a support rod with a threaded connection part.

[0049] The embodiment of the present invention also discloses a medical device, which includes but is not limited to an ultrasonic diagnostic device. The medical device includes a human-machine interaction panel and the lifting mechanism disclosed in any one of the above embodiments, wherein the human-machine interaction panel is installed on the above-mentioned component carrier 3.

[0050] Please refer to Figure 5 , Figure 5 an ultrasonic scanning diagnostic device, which at least includes a base 005 with rollers, a lifting support rod 004 arranged on the base 005, a mainframe platform is installed on the lifting support rod 004, input devices such as a keyboard 003 and a touch screen 002 are installed on the mainframe platform, the lifting support mechanism 006 disclosed in the above embodiment is further arranged on the mainframe platform, and a human-computer interaction panel 001 is further installed on the component carrier of the lifting support mechanism 006. In an embodiment, the human-computer interaction panel 001 is specifically the display panel of the ultrasonic diagnostic device. Under the support of the above lifting support mechanism 006, the operator can easily adjust the position, pitch angle and yaw angle of the human-computer interaction panel 001 as needed.

[0051] It should be noted that in addition to supporting the human-computer interaction panel, the lifting support mechanism in the above embodiment can also support other components that need to be lifted, such as the operating table in medical equipment, the carrying platform for placing items, etc.

[0052] The above has introduced the lifting support mechanism and the medical equipment provided by the present invention in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be pointed out that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A lifting and supporting mechanism, characterized in that, Comprising: A seat body (1); A lifting swing arm (2), the first end of the lifting swing arm (2) being hinged to the seat body (1) through a lifting rotating shaft (9); A component carrier (3), the component carrier (3) being connected to the second end of the lifting swing arm (2); A balance spring (4), the first end of the balance spring (4) being connected to the seat body (1); A cam (5), the cam (5) being fixedly arranged on the seat body (1), and the rotation center of the cam (5) being located on the axis of the lifting rotating shaft (9); A pulling rope (6), one end of the pulling rope (6) being connected to the component carrier (3), and the other end being connected to the second end of the balance spring (4); wherein, When the lifting swing arm (2) is in a vertical state, the pulling rope (6) is tangent to the outer contour of the cam (5), and the moment generated by the elastic force of the balance spring (4) at the lifting rotating shaft (9) is equal to the moment generated by the component carrier (3) and the component to be supported at the lifting rotating shaft (9); when the lifting swing arm (2) descends, the pulling rope (6) winds around the outer contour of the cam (5) and pulls the balance spring (4) to elongate, so that the moment generated by the elastic force of the balance spring (4) at the lifting rotating shaft (9) is always equal to the moment generated by the component carrier (3) and the component to be supported at the lifting rotating shaft (9).

2. The lifting and supporting mechanism according to claim 1, characterized in that, When the lifting swing arm (2) is in the vertical state: the elongation of the balance spring (4) is S 0, and the point where the pulling rope (6) is tangent to the cam (5) is point A; when the lifting swing arm (2) descends to a position where the angle with the vertical plane is θ, the point where the pulling rope (6) is tangent to the cam (5) is point B, and the distance between point B and the rotation center of the cam (5) is the polar radius, and the polar radius is ρ ( θ ), and the following moment balance equation holds: , where k is the elastic coefficient of the balance spring (4), m is the total mass of the component carrier (3) and the component to be supported, g is the acceleration due to gravity, L is the length of the lifting swing arm (2).

3. The lifting support mechanism according to claim 1, characterized in that, The balance spring (4) is built in the seat body (1), and the bottom end of the balance spring (4) is fixedly connected to the seat body (1), and the top end is connected to the pulling rope (6).

4. The lifting and supporting mechanism according to claim 3, characterized in that, The connection position of the pulling rope (6) and the balance spring (4) is located on the central axis of the balance spring (4).

5. The lifting and supporting mechanism according to claim 1, wherein, The lifting swing arm (2) includes two swing arm monomers that are symmetric about the left and right and arranged at intervals, and the cam (5) is arranged between the two swing arm monomers.

6. The lifting and supporting mechanism according to any one of claims 1-5, characterized in that, The component carrier (3) is rotationally connected to the second end of the lifting swing arm (2) through a pitching rotating shaft (8), and the axis of the pitching rotating shaft (8) is parallel to the axis of the lifting rotating shaft (9).

7. The lifting and supporting mechanism according to claim 6, wherein, The component carrier (3) includes a pitching support member (32) and a yaw support member (31), the yaw support member (31) is provided with an installation part for installing the component to be supported, the pitching support member (32) is rotationally connected to the second end of the lifting swing arm (2) through the pitching rotating shaft (8), the yaw support member (31) is rotationally connected to the pitching support member (32) through a yaw rotating shaft, and the axis of the yaw rotating shaft is perpendicular to the axis of the pitching rotating shaft (8).

8. The lifting and supporting mechanism according to any one of claims 1-5 and 7, characterized in that, A groove body adapted to the pulling rope (6) is further arranged on the outer contour of the cam (5).

9. The lifting and supporting mechanism according to claim 1, wherein The pulling rope (6) is a metal rigid rope.

10. A medical device, characterized in that, Comprising a human-machine interaction panel and the lifting support mechanism according to any one of claims 1-9, the human-machine interaction panel being installed on the component carrier (3).

11. The medical device according to claim 10, wherein The medical device is an ultrasonic diagnostic device.

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