Pressing main body and cardio-pulmonary resuscitation machine

Abstract

The utility model provides a pressing main body and a cardio-pulmonary resuscitation machine, and the pressing main body comprises a supporting assembly which is provided with a mounting cavity; a driving assembly; the transmission assembly comprises a lead screw, a nut and a transmission sleeve, the lead screw is rotationally assembled to the supporting assembly, the nut and the lead screw are assembled in a screwed mode, one end of the transmission sleeve is fixed to the outer side of the nut, and the other end of the transmission sleeve extends out of the mounting cavity; the limiting assembly comprises a limiting seat and a limiting shaft, the limiting seat is fixed to the outer side of the nut, the limiting shaft is fixed to the supporting assembly and is parallel to the lead screw, and the limiting seat is assembled to the limiting shaft in a sliding mode; the pressing assembly is fixed to the end, stretching out of the mounting cavity, of the transmission sleeve. And the control assembly is electrically connected to the driving assembly. The driving assembly drives the pressing assembly to move up and down through the lead screw, the nut and the transmission sleeve, the structure is simple, and the transmission efficiency is high. Moreover, the limiting seat and the limiting shaft are arranged for guiding, the structure is compact, and the occupied space is extremely small, so that the space occupancy rate is reduced, and the weight of the whole machine is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a pressing body and a cardiopulmonary resuscitation machine. Background Art

[0002] With the development and progress of medical science and technology, more and more cardiopulmonary resuscitation machines are used in medical institutions and families. The transmission mechanism is an important component of the cardiopulmonary resuscitation machine, which can convert mechanical energy such as the motor into kinetic energy to beat the patient's chest.

[0003] In the related art, the driving source of the cardiopulmonary resuscitation machine is generally a rotary motor, which converts the rotary motion of the motor into the linear motion of the pressing component through a transmission mechanism. However, the current transmission mechanism has a complex structure and low transmission efficiency, resulting in poor pressing effect of the cardiopulmonary resuscitation machine. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a pressing body and a cardiopulmonary resuscitation machine, aiming to solve the problems of complex structure and low transmission efficiency of the transmission mechanism in the cardiopulmonary resuscitation machine in the related art.

[0005] In order to solve the above technical problems, the first aspect of the present invention provides a pressing body, comprising:

[0006] A support assembly having a mounting cavity;

[0007] A driving assembly, arranged on the supporting assembly;

[0008] A transmission assembly is arranged in the installation cavity, the transmission assembly comprises a screw rod, a nut and a transmission sleeve, the screw rod is rotatably assembled on the support assembly, the nut is assembled with the screw rod, one end of the transmission sleeve is fixed to the outside of the nut, and the other end extends out of the installation cavity;

[0009] A limit assembly is arranged in the installation cavity, the limit assembly comprises a limit seat and a limit shaft, the limit seat is fixed to the peripheral side of the nut, the limit shaft is fixed to the support assembly and is parallel to the screw rod, and the limit seat is slidably assembled on the limit shaft;

[0010] A pressing assembly is fixed to one end of the transmission sleeve extending into the installation cavity; and

[0011] The control component is electrically connected to the driving component.

[0012] Optionally, the limiting seat includes a fixed part and a sliding part, the fixed part is sleeved and fixed on the outside of the nut, the sliding part is fixed to the outside of the fixed part and slidably assembled on the limiting shaft, and the sliding part is sleeved on the outside of the limiting shaft.

[0013] Optionally, the limiting assembly further includes a locking member and a pressure plate, wherein the pressure plate is fixed to the outer side of the limiting seat, one end of the locking member is fixed to the pressure plate, and the other end passes through the limiting seat and is fixed to the nut.

[0014] Optionally, the pressing body also includes a detection component, which includes a trigger head and a displacement sensor, the trigger head is elastically arranged on the outside of the limit seat, the displacement sensor is arranged in the installation cavity and is electrically connected to the control component, the length of the displacement sensor extends along the length direction of the screw rod, and one end of the trigger head away from the limit seat abuts against the displacement sensor.

[0015] Optionally, the support assembly includes a base, and a top plate and a bottom plate respectively fixed to both ends of the base, the base, the top plate and the bottom plate together enclose the installation cavity, one end of the limit axis is fixed to the bottom plate, and the other end is fixed to the top plate.

[0016] Optionally, the support assembly further includes a first support tube and a first bearing, the first support tube is fixed to the top plate, the outer ring of the first bearing is fixed in the first support tube, and one end of the screw rod is fixed to the inner ring of the first bearing.

[0017] Optionally, a convex ring is provided on the inner wall of the first support tube, a limiting ring and an elastic member are provided in the first support tube, the elastic member is fixed to one side of the limiting ring, one end of the first bearing abuts against the convex ring, and the other end abuts against the elastic member.

[0018] Optionally, the support assembly also includes a second support cylinder and a second bearing, the second support cylinder is fixed to the base plate, the second bearing is fixed in the second support cylinder, the transmission sleeve is fixed in the second bearing, and the second bearing is used to apply radial support force to the transmission sleeve.

[0019] Optionally, the pressing body further includes a driving wheel, a conveyor belt and a driven wheel, the driving wheel is fixed to the driving assembly, the driven wheel is sleeved and fixed on the outer side of the screw rod, and the conveyor belt is wound between the driving wheel and the driven wheel.

[0020] A second aspect of the utility model provides a cardiopulmonary resuscitation machine, comprising a pressing body as described above.

[0021] Compared with the related technologies, the pressing body and cardiopulmonary resuscitation machine in the utility model have the following beneficial effects: the driving component drives the pressing component to move up and down through the screw rod, the nut and the transmission sleeve, and the structure is simple and the transmission efficiency is high; moreover, by setting a limit seat and a limit shaft for guidance, the structure is compact and the space occupied is extremely small, thereby reducing the space occupancy rate, and then reducing the weight of the whole machine, making it convenient to use the cardiopulmonary resuscitation machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of a pressing body provided by an embodiment of the utility model;

[0024] Figure 2 It is a cross-sectional view of a pressing body in one direction provided by an embodiment of the utility model;

[0025] Figure 3 yes Figure 2 A magnified view of detail A;

[0026] Figure 4 It is a cross-sectional view of the pressing body in another direction provided by an embodiment of the utility model;

[0027] Figure 5 It is a schematic diagram of the assembly between the limit seat, the trigger head and the pressure plate in the pressing body provided by the embodiment of the utility model.

[0028] In the accompanying drawings, each reference numeral represents:

[0029] 1. Support assembly; 11. Base; 111. Mounting cavity; 12. Top plate; 13. Bottom plate; 14. First support tube; 141. Convex ring; 15. First bearing; 16. Second support tube; 17. Second bearing; 2. Drive assembly; 3. Transmission assembly; 31. Screw rod; 32. Nut; 33. Transmission sleeve; 4. Limit assembly; 41. Limit seat; 411. Fixed part; 412. Sliding part; 42. Limit shaft; 43. Locking member; 44. Pressing plate; 5. Pressing assembly; 6. Detection assembly; 61. Trigger head; 62. Displacement sensor; 63. Mounting seat; 7. Limit ring; 8. Elastic member; 9. Driving wheel; 10. Conveyor belt; 20. Driven wheel. DETAILED DESCRIPTION

[0030] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" and "several" is two or more, unless otherwise clearly and specifically defined.

[0033] The embodiment of the utility model provides a cardiopulmonary resuscitation machine, comprising a pressing body, wherein the pressing body is used for tapping the chest of a patient to perform cardiopulmonary resuscitation on the patient.

[0034] See also Figures 1 to 5The pressing body includes a supporting component 1, a driving component 2, a transmission component 3, a limiting component 4, a pressing component 5 and a control component. The supporting component 1 is provided with an installation cavity 111; the driving component 2 is arranged in the supporting component 1; the transmission component 3 is arranged in the installation cavity 111, and the transmission component 3 includes a screw rod 31, a nut 32 and a transmission sleeve 33, the screw rod 31 is rotatably assembled in the supporting component 1, the nut 32 is assembled with the screw rod 31, one end of the transmission sleeve 33 is fixed to the outside of the nut 32, and the other end extends out of the installation cavity 111; the limiting component 4 is arranged in the installation cavity 111, and the limiting component 4 includes a limiting seat 41 and a limiting shaft 42, the limiting seat 41 is fixed to the outside of the nut 32, the limiting shaft 42 is fixed to the supporting component 1 and is parallel to the screw rod 31, and the limiting seat 41 is slidably assembled on the limiting shaft 42; the pressing component 5 is fixed to one end of the transmission sleeve 33 extending to the installation cavity 111; the control component is electrically connected to the driving component 2.

[0035] Since the limiting shaft 42 is fixed to the supporting assembly 1 and is parallel to the screw rod 31, and the nut 32 is assembled with the screw rod 31, the limiting seat 41 is fixed to the outside of the nut 32, so that the rotation of the nut 32 can be limited by the limiting assembly 4, so that the driving assembly 2 drives the pressing assembly 5 to move up and down through the screw rod 31, the nut 32 and the transmission sleeve 33, with a simple structure and high transmission efficiency; moreover, the limiting assembly 4 has a compact structure and occupies very little space, thereby reducing the space occupancy rate, and then reducing the weight of the whole machine, making it convenient to use the cardiopulmonary resuscitation machine.

[0036] It should be noted that the drive assembly 2 drives the screw to rotate, and the nut 32, the screw 31 and the limit assembly 4 cooperate with each other to drive the transmission sleeve 33 to move up and down, thereby converting the rotational motion of the drive assembly 2 into the linear motion of the pressing assembly 5. The screw 31 and the nut 32 form a screw transmission, preferably a ball screw transmission, to improve the smoothness of the cooperation and the transmission accuracy between the nut 32 and the screw 31. The assembly method between the transmission sleeve 33 and the nut 32 can be any one of a threaded connection, a plug-in connection and a snap-on connection.

[0037] See also Figure 2 , Figure 3 and Figure 5 The limiting seat 41 includes a fixed portion 411 and a sliding portion 412. The fixed portion 411 is sleeved and fixed on the outer side of the nut 32. The sliding portion 412 is fixed on the outer side of the fixed portion 411 and slidably assembled on the limiting shaft 42. The sliding portion 412 is sleeved on the outer side of the limiting shaft 42. Specifically, the limiting shaft 42 can be a guide column. The fixed portion 411 and the sliding portion 412 are both cylindrical, and the size of the sliding portion 412 is smaller than that of the fixed portion 411, so that the space occupied by the limiting seat 41 can be reduced, and the weight of the whole machine can be further reduced.

[0038] See also Figure 4In some embodiments, two limit shafts 42 are provided, and the two limit shafts 42 are distributed at intervals with the fixed portion 411; two sliding portions 412 are provided, and the two sliding portions 412 are respectively provided on both sides of the fixed portion 411, and the two sliding portions 412 are respectively slidably assembled on the two limit shafts 42, thereby improving the stability and smoothness of the sliding of the limit seat 41.

[0039] See also Figure 2 , Figure 3 and Figure 5 The limit assembly 4 also includes a locking member 43 and a pressing plate 44. The pressing plate 44 is fixed to the outer side of the limit seat 41. One end of the locking member 43 is fixed to the pressing plate 44, and the other end passes through the limit seat 41 and is fixed to the nut 32. The limit seat 41 is fixed to the outer side of the nut 32 by the locking member 43 and the pressing plate 44. Specifically, the locking member 43 can be a steel column with a nut, the pressing plate 44 is provided with a countersunk hole, the fixing portion 411 is provided with a through hole, and the nut 32 is provided with a mounting hole. One end of the steel column with a nut is installed in the countersunk hole, and the other end passes through the through hole and is embedded in the mounting hole, so that the fixing portion 411 is locked and fixed on the nut 32. According to actual needs, the side of the pressing plate 44 that contacts the fixing portion 411 is a plane, and a plurality of steel columns can be provided. The pressing plate 44 can be fixed to the outer side of the fixing portion 411 by screws.

[0040] See also Figure 2 and Figure 4 The support assembly 1 includes a base 11, and a top plate 12 and a bottom plate 13 respectively fixed to the two ends of the base 11. The base 11, the top plate 12 and the bottom plate 13 together enclose an installation cavity 111. One end of the limiting shaft 42 is fixed to the bottom plate 13, and the other end is fixed to the top plate 12, so that the longer limiting shaft 42 is fixed in the installation cavity 111.

[0041] See also Figure 2 and Figure 3The pressing body also includes a detection component 6, which includes a trigger head 61 and a displacement sensor 62. The trigger head 61 is elastically arranged on the outside of the limit seat 41, and the displacement sensor 62 is arranged in the installation cavity 111 and is electrically connected to the control component. The length of the displacement sensor 62 extends along the length direction of the screw rod, and one end of the trigger head 61 away from the limit seat 41 abuts against the displacement sensor 62. Specifically, the trigger head 61 is fixed to the outside of the fixing portion 411, and the trigger head 61 and the pressing plate 44 are respectively located on the opposite sides of the fixing portion 411, and the displacement sensor 62 is fixed to the inner wall of the base 11, and the trigger head 61 and the displacement sensor 62 are arranged opposite to each other. When the nut 32 moves up and down, the limit seat 41 is driven to move up and down, and the trigger head 61 moves up and down with the limit seat 41, wherein, when the pressing component 5 moves to contact with the human body, the input current in the driving component 2 increases, and when the control component detects the signal of the current increase, it determines that this time is the initial pressing position. When the pressing component 5 starts to press, the trigger head 61 moves downward following the limit seat 41, and the contact position between the trigger head 61 and the displacement sensor 62 changes. At this time, the displacement sensor 62 will transmit different resistance signals to the control component. The control component determines the pressing depth of the pressing component 5 according to the different resistance signals, thereby realizing precise control of the pressing depth.

[0042] See also Figure 3 In some embodiments, the detection component 6 also includes a mounting seat 63 fixed to the limit seat 41. The trigger head 61 is elastically connected to the mounting seat 63 along the length direction perpendicular to the screw rod. For example, the trigger head 61 is elastically connected to the mounting seat 63 through a spring, so that the trigger head 61 can extend or retract along the length direction perpendicular to the screw rod, ensuring that the trigger head 61 can always be in contact with the displacement sensor 62.

[0043] See also Figure 1 , Figure 2 and Figure 4 The support assembly 1 also includes a first support tube 14 and a first bearing 15. The first support tube 14 is fixed to the top plate 12. The outer ring of the first bearing 15 is fixed in the first support tube 14. One end of the screw is fixed to the inner ring of the first bearing 15, and the other end extends toward the bottom plate 13 and is located in the transmission sleeve 33, so as to realize the rotation of the screw on the base 11; wherein the first bearing 15 can be a deep groove ball bearing.

[0044] See also Figure 2 and Figure 3A convex ring 141 is provided on the inner wall of the first supporting tube 14, and a limiting ring 7 and an elastic member 8 are provided in the first supporting tube 14. The elastic member 8 is fixed on one side of the limiting ring 7. One end of the first bearing 15 abuts against the convex ring 141, and the other end abuts against the elastic member 8. The elastic member 8 can provide a rebound force so that the first bearing 15 abuts against the convex ring 141, thereby fixing the first bearing 15 more firmly in the first supporting tube 14, thereby preventing the screw rod 31 from moving up and down; moreover, the gap caused by installation and processing can be eliminated, so that the first bearing 15 can always be pressed on the convex ring 141, avoiding gaps and virtual positions caused by shaking, and improving the smoothness and stability of the rotation of the screw rod.

[0045] See also Figure 2 and Figure 3 In some embodiments, the end of the fixing portion 411 is aligned with the end of the first support tube 14, and the end of the nut 32 is staggered with the end of the first support tube 14. The fixing portion 411 can be abutted against the first support tube 14 to prevent the nut 32 from continuing to move upward and exceeding the stroke, thereby effectively preventing the nut 32 from getting stuck. At the same time, it can also prevent the nut 32 from colliding with the first support tube 14, thereby preventing the thread of the screw rod 31 or the thread of the nut 32 from being damaged due to the force on the nut 32.

[0046] See also Figure 1 , Figure 2 and Figure 4 The support assembly 1 further includes a second support cylinder 16 and a second bearing 17. The second support cylinder 16 is fixed to the bottom plate 13. The second bearing 17 is fixed in the second support cylinder 16. The transmission sleeve 33 is fixed in the second bearing 17. The second bearing 17 is used to apply a radial support force to the transmission sleeve 33. Specifically, the second bearing 17 can be a plastic press-fit bearing. The support force provided by the plastic press-fit bearing can prevent the transmission sleeve 33 from shaking left and right, thereby improving the stability and smoothness of the transmission sleeve 33 moving up and down.

[0047] See also Figure 1 The pressing body also includes a driving wheel 9, a conveyor belt 10 and a driven wheel 20. The driving wheel 9 is fixed to the driving assembly 2. The driven wheel 20 is sleeved and fixed on the outer side of the screw rod. The conveyor belt 10 is wound between the driving wheel 9 and the driven wheel 20. Specifically, the driving assembly 2 includes a driving source, which is fixed to the outer side of the base 11. The driving source can be a rotating motor. The driving wheel 9 is fixed to the output end of the rotating motor. When the driving source drives the driving wheel 9 to rotate, the conveyor belt 10 drives the driven wheel 20 to rotate, and the screw rod 31 rotates with the driven wheel 20. Since the limiting shafts 42 on both sides limit the rotation of the nut 32, the nut 34 can only move up and down. The nut 32 drives the transmission sleeve 33 to move up and down, thereby driving the transmission sleeve 33 to move up and down, so that the pressing assembly 5 moves up and down, realizing the reciprocating pressing movement of the pressing body of the cardiopulmonary resuscitation machine.

[0048] In some embodiments, the pressing body further includes a protective cover fixed to the top plate 12, and the driving wheel 9, the conveyor belt 10, the driven wheel 20 and the screw 31 are all arranged in the protective cover, so as to prevent dust from entering the pressing body and interfering with the rotation of the screw. The control component includes a connecting plate and a circuit board, the connecting plate is fixed to the outside of the base 11, and the circuit board is fixed to the connecting plate and electrically connected to the driving source. The pressing component 5 includes a pressing head, which is fixed to one end of the transmission sleeve 33 extending out of the installation cavity 111.

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

Claims

1. A pressing body, characterized in that: include: A support assembly having a mounting cavity; A driving assembly, arranged on the supporting assembly; A transmission assembly is arranged in the installation cavity, the transmission assembly comprises a screw rod, a nut and a transmission sleeve, the screw rod is rotatably assembled on the support assembly, the nut is assembled with the screw rod, one end of the transmission sleeve is fixed to the outside of the nut, and the other end extends out of the installation cavity; A limit assembly is arranged in the installation cavity, the limit assembly comprises a limit seat and a limit shaft, the limit seat is fixed to the peripheral side of the nut, the limit shaft is fixed to the support assembly and is parallel to the screw rod, and the limit seat is slidably assembled on the limit shaft; A pressing assembly is fixed to one end of the transmission sleeve extending into the installation cavity; and The control component is electrically connected to the driving component.

2. The pressing body according to claim 1, characterized in that: The limiting seat includes a fixed part and a sliding part, the fixed part is sleeved and fixed on the outer side of the nut, the sliding part is fixed on the outer side of the fixed part and slidably assembled on the limiting shaft, and the sliding part is sleeved on the outer side of the limiting shaft.

3. The pressing body according to claim 1, characterized in that: The limiting assembly also includes a locking member and a pressing plate, wherein the pressing plate is fixed to the outer side of the limiting seat, one end of the locking member is fixed to the pressing plate, and the other end passes through the limiting seat and is fixed to the nut.

4. The pressing body according to claim 1, characterized in that: The pressing body also includes a detection component, which includes a trigger head and a displacement sensor. The trigger head is elastically arranged on the outside of the limit seat, and the displacement sensor is arranged in the installation cavity and electrically connected to the control component. The length of the displacement sensor extends along the length direction of the screw rod, and one end of the trigger head away from the limit seat abuts against the displacement sensor.

5. The pressing body according to claim 1, characterized in that: The support assembly includes a base, and a top plate and a bottom plate respectively fixed to the two ends of the base, the base, the top plate and the bottom plate together enclose the installation cavity, one end of the limiting shaft is fixed to the bottom plate, and the other end is fixed to the top plate.

6. The pressing body according to claim 5, characterized in that: The support assembly also includes a first support tube and a first bearing. The first support tube is fixed to the top plate, the outer ring of the first bearing is fixed in the first support tube, and one end of the screw rod is fixed to the inner ring of the first bearing.

7. The pressing body according to claim 6, characterized in that: The inner wall of the first support tube is provided with a convex ring, and a limiting ring and an elastic member are provided in the first support tube. The elastic member is fixed to one side of the limiting ring, and one end of the first bearing abuts against the convex ring, and the other end abuts against the elastic member.

8. The pressing body according to claim 5, characterized in that: The support assembly also includes a second support tube and a second bearing, wherein the second support tube is fixed to the base plate, the second bearing is fixed in the second support tube, the transmission sleeve is fixed in the second bearing, and the second bearing is used to apply radial support force to the transmission sleeve.

9. The pressing body according to claim 1, characterized in that: The pressing body also includes a driving wheel, a conveyor belt and a driven wheel. The driving wheel is fixed to the driving assembly, the driven wheel is sleeved and fixed on the outer side of the screw rod, and the conveyor belt is wound between the driving wheel and the driven wheel.

10. A cardiopulmonary resuscitation machine, characterized in that: It comprises a pressing body as described in any one of claims 1-9.

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