CN113187826A

CN113187826A - Clutch device and movable medical instrument

Info

Publication number: CN113187826A
Application number: CN202110433449.7A
Authority: CN
Inventors: 刘鹏
Original assignee: Wuhan Zhongke Medical Technology Industrial Technology Research Institute Co Ltd
Current assignee: Wuhan Zhongke Medical Technology Industrial Technology Research Institute Co Ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-07-30
Anticipated expiration: 2041-04-16
Also published as: CN113187826B

Abstract

In the clutch device and the movable medical apparatus provided by the invention, the clutch device comprises a driving mechanism, an executing mechanism and a switching mechanism which are sequentially arranged along an axis, and the driving mechanism and the executing mechanism are respectively and rotatably arranged around the axis; the drive mechanism includes a first engagement portion, and the actuator includes a second engagement portion movable in the direction of the axis; the switching mechanism comprises an operating cover and a transmission module, wherein the operating cover is configured to drive the second engagement part to move along the axis through the transmission module, so that the second engagement part and the first engagement part are driven to be engaged or disengaged. So the configuration, can realize the meshing and the breaking away from of clutch through control operation lid for clutch's operation process simplifies greatly and no longer need with the help of the instrument, has solved among the prior art, and the problem that the operation that portable medical instrument's clutch exists is loaded down with trivial details and need just can accomplish with the help of the instrument.

Description

Clutch device and movable medical instrument

Technical Field

The invention relates to the technical field of medical instruments, in particular to a clutch device and a movable medical instrument.

Background

The traditional movable medical apparatus adopts a screw as a clutch adapter, and when a power mechanism needs to be separated from an actuating mechanism, an additional tool is needed to take down the screw; when the power mechanism is combined, the actuating mechanism needs to be rotated by a certain angle, and then the screw is connected by means of a tool, so that the power mechanism and the actuating mechanism are combined together. That is, the clutch device of the movable medical apparatus in the prior art has the problems of complicated operation and the need of tools.

Disclosure of Invention

The invention aims to provide a clutch device and a movable medical instrument, which are used for solving the problems that the clutch device of the movable medical instrument in the prior art is complicated to operate and can be completed only by means of a tool.

In order to solve the technical problem, the invention provides a clutch device, which comprises a driving mechanism, an actuating mechanism and a switching mechanism which are sequentially arranged along an axis, wherein the driving mechanism and the actuating mechanism are respectively and rotatably arranged around the axis; the driving mechanism comprises a first engaging part, the actuating mechanism comprises a second engaging part which can move along the direction of the axis, and the first engaging part and the second engaging part are matched in shape; the switching mechanism comprises an operating cover and a transmission module, wherein the operating cover is configured to drive the second engagement part to move along the axis through the transmission module, so that the second engagement part and the first engagement part are driven to be engaged or disengaged.

Optionally, the second engaging portion is configured to move along the axis towards the first engaging portion to engage the second engaging portion with the first engaging portion, and the second engaging portion is further configured to move along the axis away from the first engaging portion to disengage the second engaging portion from the first engaging portion.

Optionally, the operating cover is rotatably disposed around the axis relative to the actuating mechanism, the switching mechanism further includes a conversion module, the conversion module is configured to convert circumferential rotation of the operating cover into axial movement of the operating cover along the axis, one end of the transmission module is connected to the operating cover in an abutting manner, and the other end of the transmission module is connected to the second engaging portion.

Optionally, the conversion module includes a thread structure disposed on the actuator, the operating cover has a thread adapted to the thread structure, the operating cover is in threaded connection with the thread structure, and the circumferential rotation of the operating cover is converted into an axial movement along the axis through the thread structure.

Optionally, the transmission module includes a potential energy component, and the potential energy component is respectively connected with the actuator and the transmission module; the potential energy assembly is configured to store potential energy during movement of the operating cover along the axis toward the first engagement, and release the stored potential energy during movement of the operating cover along the axis away from the first engagement to drive the second engagement out of engagement with the first engagement.

Optionally, the potential energy assembly includes a pin shaft movable along the axis, one end of the pin shaft is fixedly connected to the second engaging portion, and the other end of the pin shaft abuts against the operating cover to transmit displacement of the operating cover along the axis.

Optionally, the actuator has a through hole formed along the axis, and the through hole has a first limiting surface facing away from the first engaging portion; the pin shaft is provided with a second limiting surface arranged towards the direction of the first meshing part and penetrates through the through hole; the potential energy component further comprises a spring, and the spring is arranged in the through hole and arranged between the first limiting surface and the second limiting surface.

Optionally, an end surface of the pin shaft, which is far away from the first engaging portion, is an arc surface.

Optionally, the first engaging part and the second engaging part are of a jaw structure.

Optionally, the cross section of the teeth of the first engaging portion perpendicular to the axis is a sector ring, and the center of the sector ring is located on the axis.

Optionally, the teeth of the jaw structure are isosceles trapezoids in a radial cross section perpendicular to the axis.

In order to solve the technical problem, the invention further provides a movable medical instrument, which comprises the clutch device and a mandrel coaxially arranged with the axis, wherein the driving mechanism and the executing mechanism are respectively rotatably sleeved on the mandrel.

In summary, the clutch device and the movable medical apparatus provided by the invention comprise a driving mechanism, an actuating mechanism and a switching mechanism which are sequentially arranged along an axis, wherein the driving mechanism and the actuating mechanism are respectively and rotatably arranged around the axis; the drive mechanism includes a first engagement portion, and the actuator includes a second engagement portion movable in the direction of the axis; the switching mechanism comprises an operating cover and a transmission module, wherein the operating cover is configured to drive the second engagement part to move along the axis through the transmission module, so that the second engagement part and the first engagement part are driven to be engaged or disengaged. So the configuration, can realize the meshing and the breaking away from of clutch through control operation lid for clutch's operation process simplifies greatly and no longer need with the help of the instrument, has solved among the prior art, and the problem that the operation that portable medical instrument's clutch exists is loaded down with trivial details and need just can accomplish with the help of the instrument.

Drawings

It will be appreciated by those skilled in the art that the drawings are provided for a better understanding of the invention and do not constitute any limitation to the scope of the invention. Wherein:

FIG. 1 is a schematic cross-sectional view of a clutch device according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a drive mechanism according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of an actuator according to an embodiment of the invention.

In the drawings:

1-a drive mechanism; 2-mandrel; 3-a second engagement; 4-an actuator; 5-operating the cover; 6-end cover; 7-a pin shaft; 8-a spring; 9-a sprocket; 10-a first bearing; 11-a bearing cap; 12-a first engagement; 13-wheel; 14-a flange; 15-shaft cover; 16-a second bearing; 17-a shaft sleeve; 18-thread structure.

Detailed Description

To further clarify the objects, advantages and features of the present invention, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It is to be noted that the drawings are in greatly simplified form and are not to scale, but are merely intended to facilitate and clarify the explanation of the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently.

As used in this application, the singular forms "a", "an" and "the" include plural referents, the term "or" is generally employed in a sense including "and/or," the terms "a" and "an" are generally employed in a sense including "at least one," the terms "at least two" are generally employed in a sense including "two or more," and the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, features defined as "first", "second" and "third" may explicitly or implicitly include one or at least two of the features, "one end" and "the other end" and "proximal end" and "distal end" generally refer to the corresponding two parts, which include not only the end points, but also the terms "mounted", "connected" and "connected" should be understood broadly, e.g., as a fixed connection, as a detachable connection, or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Furthermore, as used in the present invention, the disposition of an element with another element generally only means that there is a connection, coupling, fit or driving relationship between the two elements, and the connection, coupling, fit or driving relationship between the two elements may be direct or indirect through intermediate elements, and cannot be understood as indicating or implying any spatial positional relationship between the two elements, i.e., an element may be in any orientation inside, outside, above, below or to one side of another element, unless the content clearly indicates otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The core idea of the invention is to provide a clutch device and a movable medical instrument, which are used for solving the problems that the clutch device of the movable medical instrument in the prior art is complicated to operate and can be completed only by means of a tool.

The following description refers to the accompanying drawings.

Referring to fig. 1 to 3, fig. 1 is a schematic cross-sectional view of a clutch device according to an embodiment of the invention; FIG. 2 is a schematic cross-sectional view of a drive mechanism according to an embodiment of the present invention; FIG. 3 is a cross-sectional view of an actuator according to an embodiment of the invention.

Fig. 1 shows a clutch device, comprising a driving mechanism 1, an actuator 4 and a switching mechanism arranged in sequence along an axis, the driving mechanism 1 and the actuator 4 being respectively rotatably arranged around the axis; the driving mechanism 1 comprises a first engaging part 12, the actuating mechanism 4 comprises a second engaging part 3 which can move along the direction of the axis, and the shape of the first engaging part 12 is matched with that of the second engaging part 3; the switching mechanism includes an operation cover 5 and a transmission module, and the operation cover 5 is configured to drive the second engaging portion 3 to move along the axis through the transmission module, so as to drive the second engaging portion 3 to engage with or disengage from the first engaging portion 12.

The second engaging portion 3 is configured to move along the axis toward the first engaging portion 12 to engage the second engaging portion 3 with the first engaging portion 12, and the second engaging portion 3 is further configured to move along the axis away from the first engaging portion 12 to disengage the second engaging portion 3 from the first engaging portion 12.

In the prior art, torque is transmitted in a screw fixing mode, so when the driving mechanism 1 and the actuating mechanism 4 need to be connected, a screw needs to be screwed up by using a tool, and when the driving mechanism and the actuating mechanism need to be separated, the screw needs to be dismounted by using the tool, and the operation process is complicated. In the present embodiment, the coupling and decoupling process is simplified by engaging the second engaging portion 3 with the first engaging portion 12 and arranging the second engaging portion 3 to be movable in the axial direction, and on the basis of this, the coupling and decoupling process can be realized by operating the operating cover 5 by arranging the operating cover 5 and the transmission module, so that the tool is not dependent. By integrating the two beneficial effects, the problem that the clutch device of the movable medical instrument in the prior art is complex to operate and can be completed only by means of tools is solved.

Preferably, the operating cover 5 is rotatably disposed around the axis relative to the actuator 4, the switching mechanism further includes a conversion module, the conversion module is configured to convert the circumferential rotation of the operating cover 5 into the axial movement of the operating cover 5 along the axis, one end of the transmission module is connected to the operating cover 5 in an abutting manner, and the other end of the transmission module is connected to the second engaging portion 3. The operation mode of the operation cover 5 is configured to be rotation, so that the operation of free-hand operation of an operator is further facilitated, and further, the diameter of the operation cover 5 is set to be suitable for palm grasping, so that the force application of the operator is facilitated, and a better operation effect is obtained. Since the operation mode of the operation cover 5 is rotation, the rotation of the operation cover needs to be converted into translation by the rotation module, so as to drive the second engaging portion 3. It will be appreciated that the transmission module may also be connected to the operating cover 5 by means of hinges or the like, with similar effect, but connected by means of abutment, which is simpler in structure, which facilitates the manufacture, and at the same time is a structure with less resistance during operation.

There are also many options for the specific implementation of the conversion module, such as using a worm gear structure or a rack and pinion structure, and preferably, the conversion module comprises a screw thread structure 18, the screw thread structure 18 is arranged on the actuator, the operating cover 5 is provided with a thread matched with the thread structure 18, the operating cover 5 is connected with the thread structure 18 in a threaded mode, the circumferential rotation of the operating cover is converted by the thread formation 18 into an axial movement along the axis, for example, when the thread structure 18 is a positive thread, the operator rotates the operation cap 5 to rotate clockwise, the operation cap 5 is driven by the thread structure 18 to move along the axis toward the first engagement portion 12, the operator rotates the operation cap 5 to rotate counterclockwise, and the operation cap 5 is driven by the thread structure 18 to move along the axis away from the first engagement portion 12. When the thread structure 18 is a reverse thread, the operator can also perform the above operation, and the operation cover 5 moves in a reverse law. With such a configuration, on the one hand, the structure is simple, and on the other hand, the thread structure 18 also plays a certain leverage role, so that an operator can operate the whole mechanism with a small force.

In a preferred embodiment, the transmission module comprises a potential energy assembly, which is connected with the actuator 1 and the transmission module 4 respectively; the potential energy assembly is configured to store potential energy during movement of the operating cover 5 along the axis towards the first engagement formation 12 and to release the stored potential energy during movement of the operating cover 5 along the axis away from the first engagement formation 12 to drive the second engagement formation 3 out of engagement with the first engagement formation 12. So the configuration, just can produce sufficient drive power through the potential energy subassembly, no longer need other power sources of peripheral hardware, further reduce operating personnel's the operation degree of difficulty. The potential energy can comprise elastic potential energy, gravitational potential energy, electromagnetic potential energy and the like. For example, permanent magnets with the same poles opposite to each other may be arranged in the potential energy assembly, when the second engagement portion 3 moves towards the first engagement portion 12, the permanent magnets approach under the constraint of an external force, and when the operating cover 5 moves towards the other side, the constraint is cancelled, and the permanent magnets repel each other due to a magnetic force, so that the second engagement portion 3 moves away from the first engagement portion 12.

Preferably, the potential energy assembly comprises a pin 7 movable along the axis, one end of the pin 7 is fixedly connected with the second engaging portion 3, and the other end of the pin 7 abuts against the operating cover 5 for transmitting the displacement of the operating cover 5 along the axis. The actuator 4 is provided with a through hole which is arranged along the axis direction and is provided with a first limiting surface which faces away from the first meshing part 3; the pin shaft 7 is provided with a second limiting surface arranged towards the direction of the first engaging part 12, and the pin shaft 7 penetrates through the through hole; the potential energy component further comprises a spring 8, and the spring 8 is arranged in the through hole and arranged between the first limiting surface and the second limiting surface. Referring to fig. 1, the distance from the first stopper surface to the first engaging portion 3 is smaller than the distance from the second stopper surface to the first engaging portion 3. Through the arrangement, the structure is simplified, and meanwhile, the expected effect can be achieved. When the operating cover 5 moves towards the first engaging portion 12, the spring 8 is squeezed by the first limiting surface and the second limiting surface, and elastic potential energy is stored, when the operating cover 5 is far away from the first engaging portion 12, the end surface, against which the operating cover 5 abuts against the pin shaft 7, of the operating cover 5 no longer exerts a restraining force on the pin shaft 7, at this time, the pin shaft 7 moves towards the operating cover 5 under the driving of the spring 8, abuts against the operating cover 5 again, and further drives the second engaging portion 3 to be far away from the first engaging portion 12. The type of the spring 8 can be selected from WT10-15, and the spring has high reliability and appropriate elasticity.

Preferably, the end surface of the pin 7 away from the first engaging portion 12 is a cambered surface. With such a configuration, the frictional resistance when the operation cover 5 is rotated is reduced, which is advantageous for the operation of the operator. Preferably, a ball structure may be provided on an end of the pin 7 remote from the first engagement portion 12 to further reduce frictional resistance when the operating cover 5 is rotated.

The first engagement portion 12 and the second engagement portion 3 may be embodied in various forms, for example, by selecting a form in which friction surfaces are in contact with each other to transmit torque, or by selecting a spline structure provided along the circumferential direction of the drive mechanism 1. Preferably, the first engagement portion 12 and the second engagement portion 3 are of a jaw-type structure. The jaw structure is a structure in which the teeth of the first engaging part 12 and the second engaging part 3 are arranged in the circumferential direction of the axis, and the teeth are protruded in the direction of the axis. The jaw structure can also effectively transmit torque, is not easy to wear, has small occupied space, and is beneficial to the separation of the first meshing part 12 and the second meshing part 3. Furthermore, the cross section of the teeth of the first meshing part along the direction perpendicular to the axis is a sector ring, the circle center of the sector ring is located on the axis, and the cross section of the teeth of the jaw structure along the radial direction perpendicular to the axis is an isosceles trapezoid. It is to be understood that the fan-ring shape should be broadly understood as being substantially fan-ring shaped, and the pattern obtained by replacing the circular arc of the fan-ring with a fold line or by rotating the waist of the fan-ring within 0 ° to 5 ° should be considered as the protection scope of the present claims. The isosceles trapezoid shape should also be broadly understood as being substantially an isosceles trapezoid, and a figure obtained by rotating any one or more of the four sides of the isosceles trapezoid by within 0 ° to 5 ° should also be considered as the protection scope of the present claims. Since the shapes of the first engaging part 12 and the second engaging part 3 are adapted, a person skilled in the art can reasonably configure the second engaging part 3 according to the description of the first engaging part 12, and will not be described in detail here. By adopting the tooth-shaped structure, the strength can be ensured, and the characteristics of simple introduction, reliable connection and bidirectional torque transmission can be realized. Preferably, the angle between the waist and the bottom of the isosceles trapezoid is between 40 ° and 50 °.

In a specific embodiment, referring to fig. 1, the clutch device further includes a mandrel 2, wherein the mandrel 2 is used as a base and fixed with the base; the driving mechanism 1 is connected with a motor and generates rotation and power transmission under the traction of the motor; the actuator 4 is the final end of the power, which is in direct contact with the ground. Referring to fig. 2, the driving mechanism 1 is composed of a chain wheel 9, a bearing 10, a bearing cover 11, and a first engaging portion 12, the first bearing 10 is fixed on the chain wheel 9 through the bearing cover 11 and a countersunk screw, the fixed spline 12 is fixed on the chain wheel 9 through the countersunk screw, the first bearing 10 is a deep groove ball bearing, and the chain wheel 9 can flexibly rotate along the radial direction of the deep groove ball bearing. Referring to fig. 3, the actuator 2 is composed of a wheel 13, a flange 14, a shaft cover 15, a bearing 16, and a shaft sleeve 17, the flange 14 is fixed on the wheel 13 by screws, the bearing 16 is clamped into the flange 14 by the shaft sleeve 17, and is finally fixed on the flange by the shaft cover 15, the bearing 16 is a deep groove ball bearing, and the rear wheel 13 can flexibly rotate thereon; the wheel 13 is made of aluminum core on the inner side and rubber on the outer side, so that the wheel has good damping performance while the strength is enough. The shaft sleeve 17 is made of copper, so that high wear resistance is guaranteed, and the strength is good.

The present embodiment further provides a movable medical apparatus, such as a movable DR (Digital Radiography) device, a movable CT (Computed Tomography) device, a movable MR (Magnetic Resonance Imaging) device, and the like, the movable medical apparatus includes the clutch device described above, and a spindle 2 coaxially arranged with the axis, please refer to fig. 1, and the driving mechanism 1 and the executing mechanism 4 are respectively rotatably sleeved on the spindle 2. The movable medical instrument has the same advantages as the clutch device, since it has the advantages of a simplified operation process and no dependence on tools. Other components and structures of the ambulatory medical device may be provided by those skilled in the art in view of the actual state of the art, and the principles of the provision of the ambulatory medical device and other components will not be described in detail herein.

In summary, in the clutch device and the movable medical instrument provided by the present invention, the clutch device includes a driving mechanism 1, an actuating mechanism 4 and a switching mechanism, which are sequentially arranged along an axis, and the driving mechanism 1 and the actuating mechanism 4 are respectively rotatably arranged around the axis; the driving mechanism 1 comprises a first engaging part 12, the actuating mechanism 4 comprises a second engaging part 3 which can move along the direction of the axis, and the shape of the first engaging part 12 is matched with that of the second engaging part 3; the switching mechanism includes an operation cover 5 and a transmission module, and the operation cover 5 is configured to drive the second engaging portion 3 to move along the axis through the transmission module, so as to drive the second engaging portion 3 to engage with or disengage from the first engaging portion 12. With the above configuration, the engagement and disengagement of the clutch device can be realized by controlling the operation cover 5, so that the operation process of the clutch device is greatly simplified and the tool is not needed, and the problems that the operation of the clutch device of the movable medical instrument is complicated and can be completed only by the tool in the prior art are solved.

The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.

Claims

1. A clutch device is characterized by comprising a driving mechanism, an executing mechanism and a switching mechanism which are sequentially arranged along an axis, wherein the driving mechanism and the executing mechanism are respectively and rotatably arranged around the axis; the driving mechanism comprises a first engaging part, the actuating mechanism comprises a second engaging part which can move along the direction of the axis, and the first engaging part and the second engaging part are matched in shape; the switching mechanism comprises an operating cover and a transmission module, wherein the operating cover is configured to drive the second engagement part to move along the axis through the transmission module, so that the second engagement part and the first engagement part are driven to be engaged or disengaged.

2. The clutched device of claim 1, wherein the second engagement portion is configured to move along the axis toward the first engagement portion to engage the second engagement portion with the first engagement portion, the second engagement portion further configured to move along the axis away from the first engagement portion to disengage the second engagement portion from the first engagement portion.

3. The clutch device according to claim 1, wherein the operating cover is rotatably disposed about the axis with respect to the actuator, and the switching mechanism further includes a conversion module for converting circumferential rotation of the operating cover into axial movement of the operating cover along the axis, one end of the transmission module is connected in abutment with the operating cover, and the other end of the transmission module is connected to the second engagement portion.

4. The clutched device of claim 3, wherein the conversion module includes a threaded structure disposed on the actuator, the operating cover has threads adapted to the threaded structure, the operating cover is threadedly coupled to the threaded structure, and circumferential rotation of the operating cover is converted to axial movement along the axis by the threaded structure.

5. The clutched device of claim 3, wherein the transmission module comprises a potential energy assembly that is coupled to the actuator and the transmission module, respectively; the potential energy assembly is configured to store potential energy during movement of the operating cover along the axis toward the first engagement, and release the stored potential energy during movement of the operating cover along the axis away from the first engagement to drive the second engagement out of engagement with the first engagement.

6. The clutch device according to claim 5, wherein the potential energy assembly comprises a pin shaft movable along the axis, one end of the pin shaft is fixedly connected with the second engagement portion, and the other end of the pin shaft abuts against the operating cover for transmitting the displacement of the operating cover along the axis.

7. The clutch device according to claim 6, wherein the actuator has a through hole formed in a direction along the axis, and the through hole has a first stopper surface facing away from the first engagement portion; the pin shaft is provided with a second limiting surface arranged towards the direction of the first meshing part and penetrates through the through hole; the potential energy component further comprises a spring, and the spring is arranged in the through hole and arranged between the first limiting surface and the second limiting surface.

8. The clutch device according to claim 6, wherein an end surface of the pin shaft remote from the first engaging portion is a curved surface.

9. The clutched device of claim 1, wherein the first and second engagement portions are dog structures.

10. The clutched device of claim 9, wherein the teeth of the first engagement portion are sector rings in a cross-section perpendicular to the axis, the center of the sector rings being located on the axis.

11. The clutched device of claim 9, wherein the teeth of the jaw structure are isosceles trapezoids in cross-section in a radial direction perpendicular to the axis.

12. An ambulatory medical device, comprising the clutch device according to any one of claims 1-11 and a mandrel disposed coaxially with the axis, wherein the driving mechanism and the actuator are rotatably mounted on the mandrel.