WO2021184758A1

WO2021184758A1 - Rotating assembly and ultrasonic device

Info

Publication number: WO2021184758A1
Application number: PCT/CN2020/123660
Authority: WO
Inventors: 肖波; 刘长庚
Original assignee: 声索生物科技(上海)有限公司
Priority date: 2020-03-18
Filing date: 2020-10-26
Publication date: 2021-09-23
Also published as: CN111407320A; CN111407320B

Abstract

A rotating assembly (1), comprising a rotating part (11), a transmission part (12), and a linkage part (13). The rotating part (11), the transmission part (12), and the linkage part (13) are arranged along the same central axis (16) and are all hollow pipes which are symmetrical with respect to the central axis (16); the gravity center of the rotating assembly (1) is positioned on the central axis (16), so that the problems that deformation may easily happen and stability of rotating motion may be affected because the gravity center deviates from the central axis (16) is solved. An accommodating cavity (222) is arranged in the transmission part (12), and components (102) of an ultrasonic device are accommodated in the accommodating cavity (222) by means of a far end of the transmission part (12) or a far end of the rotating part (11), so that the problem in the prior art that rotation stability is affected due to the fact that a transmission part is formed by means of butt joint processing along a radial direction is solved; a bearing assembly (14) is fixedly fitted over the outer wall of the linkage part (13), so that rotation stability of the rotating assembly (1) is further ensured. Also provided is an ultrasonic device comprising the rotating assembly (1).

Description

Rotating assembly and ultrasonic device

Technical field

The present invention relates to the technical field of medical equipment, in particular to a rotating assembly and an ultrasonic device.

Background technique

Ultrasound devices, especially fiber-type ultrasound endoscopes, have a slender structure, so that the ultrasound transducer fixed at one end of the ultrasound probe can penetrate deep into the human body; in addition, the ultrasound transducer is connected to the body through a coaxial cable The other end of the ultrasound probe is driven and connected to the imaging system. Driven by an external motor, the ultrasound transducer can rotate freely in the ultrasound probe to generate a vertical axial tissue cross-sectional ring image or cross-sectional image. It can be seen that the device that drives the ultrasonic transducer to rotate freely and returns the sensing signal generated by the ultrasonic transducer has a greater impact on the imaging quality.

In the prior art, cables are usually electrically connected to components, and the sensing signals generated by the ultrasonic transducer are filtered through the components to obtain high-definition images; at the same time, the components are arranged in the rotating assembly, and the rotating assembly is installed in the rotating assembly. Driven by the external motor, the components and cables can be driven to rotate, which in turn drives the ultrasonic transducer and the coaxial cable to rotate.

However, the rotating components commonly used in the prior art are usually formed by butting different components in the radial direction in order to set up components. The butt-joining process easily affects the stability of the rotating components under high-speed rotation, and long-term use is likely to cause the rotating components The slippage of the middle part of the component even undergoes significant deformation.

Therefore, it is necessary to design a new type of rotating assembly to avoid the above-mentioned problems in the prior art.

Summary of the invention

The present invention provides a rotating component and an ultrasonic device including the rotating component, which can maintain the stability of rotation under high-speed rotation, and avoid the problem of component slippage or even significant deformation that is easily caused by long-term use.

In order to achieve the above object, the rotating assembly of the present invention includes a rotating part, a transmission part and a linkage part arranged along the same central axis, and the distal end of any one of the rotation part, the transmission part and the linkage part is far away from The free end of the linkage part; the rotating part, the transmission part and the linkage part are all hollow tubes symmetrical with respect to the central axis, and the center of gravity of the rotating assembly is located on the central axis; the rotating part The transmission part is detachably and fixedly connected to the transmission part through the distal end of the transmission part; the transmission part is provided with a receiving cavity to connect the ultrasonic device through the distal end of the transmission part or the distal end of the rotation part. The components are housed in the accommodating cavity; the outer wall of the linkage part is fixedly sleeved with a bearing assembly to reduce the frictional resistance between the transmission part and the linkage part; the distal end of the bearing assembly and the Part of the structure between the distal ends of the linkage part is accommodated by the proximal end of the transmission part and can be detachably fixedly connected to the transmission part.

The beneficial effect of the rotating assembly of the present invention is that the rotating part, the transmission part and the linkage part are arranged along the same central axis, and they are all hollow tubes symmetrical with respect to the central axis, and the center of gravity of the rotating assembly Being located on the central axis enables the rotating assembly to perform stable rotational movement along the same central axis during rotation, avoiding the problem that the center of gravity is deviated from the central axis and easily deforms and affects the stability of the rotational movement. The inside of the transmission part includes a receiving cavity to house the components of the ultrasonic device in the receiving cavity through the distal end of the transmission part or the distal end of the rotating part, which avoids Butt processing in the radial direction to form the transmission part and affect the rotation stability; the outer wall of the linkage part is fixed with a bearing assembly, which can effectively reduce the friction resistance between the transmission part and the linkage part, and further ensure The rotation stability of the rotating assembly.

Preferably, the detachable and fixed connection is threaded screwing or taper fitting to facilitate self-locking.

Further preferably, when the detachable and fixed connection is the threaded engagement, the threaded directions of the rotating part, the transmission part and the linkage part are respectively opposite to their respective rotating directions, so as to facilitate the rotation Realize self-locking during the process.

Preferably, the transmission part includes a first main body tube and a first connecting tube that are sequentially connected, the first main body tube is detachably fixedly connected to the rotating part, and the first connecting tube is detachably fixedly connected to the At least part of the structure between the distal end of the bearing assembly and the distal end of the linkage part, the outer diameter of the first connecting tube and the outer diameter of the bearing assembly are both smaller than the outer diameter of the first main body tube, the The outer diameter of the first connecting pipe is larger than the outer diameter of the linkage portion. Its beneficial effects are: it is beneficial for the bearing assembly and at least a part of the linkage part to fit the sheath tube joint of the ultrasonic device in a clearance fit manner, and reduce or avoid friction with the sheath tube joint to ensure rotation Stability of movement.

Further preferably, the first main body tube is provided with the receiving cavity inside, and the outer side wall of the first main body tube is provided with a hollow area symmetrically along the central axis to communicate with the receiving cavity to facilitate Observe the components.

It is further preferred that the rotating part includes a second main body tube and a second connecting tube that are sequentially connected and communicated internally, and the outer diameter of the second main body tube is not less than the outer diameter of the first main body tube, and the first main body tube The outer diameter of the second connecting tube is smaller than the outer diameter of the first main body tube, so as to be accommodated and detachably fixedly connected to the first main body tube through the distal end of the first main body tube, and passes through the second main body tube The distal end of the accommodating the component in the accommodating cavity.

Further preferably, it further includes a rotating drive component, the outer side wall of the second connecting tube is provided with a channel, the distal end surface of the second main body tube is symmetrically provided with connecting through holes along the central axis, and the connecting through The hole communicates with the groove, so that the rotation driving component is fixed to the groove through the connecting through hole, and drives the rotating part to rotate.

Further preferably, it further includes a fixing part, and the outer side wall of the second main body tube is provided with pin through holes symmetrically along the central axis, so as to prevent the rotation part from rotating by detachably fixing the fixing part. Slippage.

Preferably, the bearing assembly includes at least one bearing, and at least two of the bearings are arranged at intervals along the direction of the central axis. The beneficial effect is that the frictional resistance between the transmission part and the linkage part is further reduced, and the rotation stability of the rotating assembly is ensured.

Further preferably, the bearing is a rolling bearing or a sliding bearing.

The ultrasonic device provided by the present invention includes a sheath tube joint and the rotating assembly. The sheath tube joint is hollow and open at both ends; the rotating assembly includes a rotating part, a transmission part and a linkage part that are sequentially arranged. The outer wall of the linkage part is sheathed and fixed with a bearing assembly; an open end of the sheath tube joint accommodates a part of the linkage part, the bearing assembly and a part of the transmission part, so that the sheath tube joint is not affected by The rotation of the rotating component causes movement.

The beneficial effect of the ultrasonic device of the present invention is that the ultrasonic device includes the rotating assembly. With reference to the beneficial effects of the rotating assembly of the present invention described above, it can be known that the rotating assembly prevents the The problem of butt processing in the direction to form the transmission part and affect the rotation stability, and enables the rotation assembly to effectively reduce the frictional resistance between the transmission part and the linkage part, and ensures the rotation stability of the rotation assembly . In addition, one open end of the sheath tube joint accommodates the linkage part, the bearing, and a part of the transmission part, so that the sheath tube joint does not move due to the rotation of the rotating assembly, which further ensures The rotation stability of the rotating assembly.

Preferably, a first cavity is defined between the inner sidewalls of the sheath tube connector to accommodate the bearing assembly and allow the bearing assembly to be in clearance fit with the inner sidewall of the sheath tube connector, and the inner side of the sheath tube connector The wall is provided with an annular groove to define the position of the proximal end of the bearing assembly. The beneficial effect is that the sheath tube joint does not move due to the rotation of the rotating assembly, and the rotation stability of the rotating assembly is ensured.

Further preferably, the linkage part includes a first joint tube, the first joint tube is located between the proximal end of the linkage part and the proximal end of the bearing assembly, and between the inner sidewalls of the sheath tube joint A second cavity is defined to accommodate the first connector tube and make the first connector tube a clearance fit with the inner side wall of the sheath tube connector.

Further preferably, a third cavity is defined between the inner side walls of the sheath tube connector to accommodate the structure between the distal end of the first connector tube and the proximal end of the bearing assembly, and the third cavity A sealing structure is arranged inside to prevent liquid substances from entering the third cavity through the second cavity.

Further preferably, a fourth cavity is defined between the inner side walls of the sheath tube connector to respectively communicate with the other open end of the sheath tube connector and the second cavity, and the fourth cavity faces the The diameter of the other open end of the sheath tube joint is continuously increased to improve the freedom of movement of the cable.

Further preferably, it further includes a limiting member, and at least two limiting through holes are opened on the outer side wall of the sheath tube joint, so as to act on the distal end of the bearing assembly and the bearing assembly in different directions through the limiting member. The position between the distal ends of the linkage parts, thereby defining the position of the distal end of the bearing assembly.

Preferably, it further includes a cable and a component, the transmission part is provided with a receiving cavity, the cable is electrically connected to the component and penetrates the rotating assembly to enter the sheath joint, and the component is suspended Set in the containing cavity.

Preferably, it further includes a cylindrical sleeve that accommodates the rotating assembly and part of the sheath tube connector, and is detachably fixedly connected to the sheath tube connector, so that the sheath tube connector and the tube The sleeve does not move due to the rotation of the rotating component.

Description of the drawings

Fig. 1 is a schematic structural diagram of a rotating assembly according to an embodiment of the present invention;

Figure 2 is a schematic diagram of the exploded structure of Figure 1;

FIG. 3 is a schematic diagram of the structure of the linkage part shown in FIG. 1;

4 is a cross-sectional view of the assembly structure composed of the bearing assembly, the linkage part and the transmission part shown in FIG. 1 along the A-A direction shown in FIG. 1;

5 is a cross-sectional view of the assembly structure composed of the transmission part and the rotation part shown in FIG. 1 along the A-A direction shown in FIG. 1;

Fig. 6 is a schematic structural diagram of an ultrasonic device according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of the structure of the sheath tube joint shown in FIG. 6;

8 is a cross-sectional view of the assembly structure composed of the sheath tube joint and part of the rotating assembly shown in FIG. 6 along the direction B-B shown in FIG. 6;

9 is a schematic diagram of the assembly structure of a cylindrical sleeve and the ultrasonic device shown in FIG. 6 according to an embodiment of the present invention;

10 is a schematic diagram of the assembly structure of the cable and components of the embodiment of the present invention and the transmission part and the rotation part shown in FIG. 5;

11 is a schematic diagram of the assembly structure of the bearing assembly, the transmission part and the linkage part of other embodiments of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are part of the present invention. Examples, not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention. Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by those with ordinary skills in the field to which the present invention belongs. As used herein, "comprising" and other similar words mean that the elements or objects appearing before the word encompass the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

In view of the problems in the prior art, the embodiment of the present invention provides a rotating assembly applied to an ultrasonic device. The rotating assembly includes a rotating part, a transmission part and a linkage part, so as to rotate synchronously under the action of an external force.

Fig. 1 is a schematic structural diagram of a rotating assembly according to an embodiment of the present invention. Figure 2 is a schematic diagram of the exploded structure of Figure 1.

1, the rotating assembly 1 has a rotating part 11, a transmission part 12, and a linkage part 13 arranged in sequence. An external drive motor (not shown in the figure) drives the rotating part 11 to perform a high-speed rotational movement around a rotation axis, thereby driving The transmission part 12 and the linkage part 13 follow the rotation part 11 to rotate synchronously. The linkage portion 13 is fixedly sleeved with a bearing assembly 14 to reduce the frictional resistance between the transmission portion 12 and the linkage portion 13, and further ensure the rotation stability of the rotating assembly 1, so that the rotating assembly 1Suitable for high-speed rotating application scenarios.

In the embodiment of the present invention, the "proximal end" is defined as the part close to the free end of the linkage portion 13, and the "distal end" is defined as the portion away from the free end of the linkage portion 13. The free end of the linkage portion 13 is shown in FIG. 2 The free end 131 shown, that is, the distal end of any one of the rotating part 11, the transmission part 12 and the linkage part 13 is far away from the free end of the linkage part 13.

Specifically, the rotating portion 11, the transmission portion 12, and the linkage portion 13 are arranged along the same central axis 16, and they are all tubular structures symmetrical to the central axis 16, so as to facilitate synchronization and stability of the three. Rotation movement.

In some embodiments of the present invention, any one or more of the rotating part 11, the transmission part 12, and the linkage part 13 are composed of the same component material, and the density of the component material is uniform, which can ensure that the The center of gravity of the rotating part 11, the transmission part 12 and the linkage part 13 are all located on the central axis 16, ensuring that the three can avoid stress concentration due to the position of the center of gravity deviating from the central axis 16 under long-term high-speed rotation. In turn, the problem of deformation occurs.

1, at least part of the structure between the bearing assembly 14 and the distal end of the linkage portion 13 is accommodated and detachably fixedly connected to the transmission portion 12 through the proximal end of the transmission portion 12.

In some embodiments of the present invention, referring to Figures 1 and 2, the transmission part 12 has a first main body tube 22 and a first connecting tube 21 that are connected to each other. At least part of the structure between the bearing assembly 14 and the distal end of the linkage portion 13. The first main body tube 22 is detachably fixedly connected to the rotating part 11.

Specifically, the outer diameter of the first main body tube 22 is larger than the outer diameter of the first connecting tube 21 and the outer diameter of the bearing assembly 14, and the outer diameter of the first connecting tube 21 is larger than the linkage portion 13 The outer diameter is beneficial for the bearing assembly 14 and at least a part of the linkage portion 13 to fit the sheath joint of the ultrasonic device in a clearance fit manner, and reduce or avoid friction with the sheath joint to ensure Stability of rotational movement.

In addition, since the first main body tube 22 is used for accommodating the components, and the first connecting tube 21 is used for passing through the cables electrically connected to the components, the size of the first connecting tube 21 is Compared with the first main body tube 22, it is reduced, which can effectively reduce the weight of the rotating assembly 1 while meeting application requirements, so as to facilitate the smooth operation of high-speed rotating motion.

2, the transmission part 12 is provided with a receiving cavity 222 inside, and the receiving cavity 222 communicates with the distal end of the transmission part 12 to accommodate the components of the ultrasonic device through the distal end of the transmission part 12于The receiving cavity 222.

In some embodiments of the present invention, the detachable fixed connection is a screw connection. Specifically, the rotating part 11 and the transmission part 12 are detachably and fixedly connected by screwing, and the transmission part 12 and the linkage part 13 are detachably and fixedly connected by screwing. .

Further, the thread directions of the rotation part 11, the transmission part 12 and the linkage part 13 are respectively opposite to their respective rotation directions, so as to facilitate self-locking during the synchronous rotation.

FIG. 3 is a schematic diagram of the structure of the linkage part shown in FIG. 1. Fig. 4 is a cross-sectional view along the A-A direction of the assembly structure composed of the bearing assembly, the linkage part and the transmission part shown in Fig. 1.

2 and 3, the linkage portion 13 is composed of a first joint pipe 31 and a second joint pipe 32 that are connected and both have an axisymmetric structure. The bearing assembly 14 is composed of a first bearing 141 and a first assembly. Tube 142 is composed. The first assembly sleeve 142 is fixedly sleeved on the second joint pipe 32 and has an axisymmetric structure. The first bearing 141 is assembled to the first assembly sleeve 142 in an interference fit manner.

1 and 2, part of the structure between the distal end of the bearing assembly 14 and the distal end of the linkage portion 13 is received by the proximal end of the transmission portion 12 and can be detachably fixedly connected to the transmission portion 12 . Specifically, referring to FIG. 4, a part of the structure between the distal end of the first assembly sleeve 142 and the distal end of the second joint tube 32 is accommodated and detachably fixedly connected in the first connecting tube 21.

In some embodiments of the present invention, referring to FIG. 4, the inside of the linkage portion 13 is used for welding through holes 45 symmetrically opened on the free end side wall of the linkage portion 13 for cables to penetrate and be welded. The cable includes a signal transmission line for returning the feedback signal of the ultrasonic transducer and a shielding line arranged around the signal transmission line.

In some embodiments of the present invention, the first bearing 141 is a rolling bearing. In some specific embodiments of the present invention, the rolling bearing is a deep groove ball bearing.

In some embodiments of the present invention, the first bearing 141 is a sliding bearing.

In some embodiments of the present invention, at least two of the first bearings 141 are arranged at intervals along the direction of the central axis 16 and assembled to the first assembly sleeve 142 in an interference fit manner.

Referring to FIGS. 3 and 4, the second joint pipe 32 is provided with a locking sleeve 34 to be detachably fixedly connected with the first connecting pipe 21.

In some embodiments of the present invention, the outer side wall of the locking sleeve 34 is tightly attached to the inner side wall of the first connecting tube 21 to realize the detachable and fixed connection.

In some embodiments of the present invention, the outer side wall of the locking sleeve 34 has a first taper, and a part of the inner side wall of the first connecting pipe 21 has a second taper adapted to the first taper, so that the locking The sleeve 34 is detachably fixedly connected to the first connecting pipe 21 in a taper self-locking manner.

Specifically, any one of the first taper and the second taper is 3 degrees to 6 degrees, so as to facilitate self-locking of the taper under high-speed rotation.

In some embodiments of the present invention, the outer side wall of the locking sleeve 34 is provided with a first external thread, and a part of the inner side wall of the first connecting pipe 21 is provided with a first internal thread that matches the first external thread. In this way, the locking sleeve 34 and the first connecting pipe 21 are detachably and fixedly connected in a threaded manner.

Specifically, the direction of rotation of the first external thread is opposite to the direction of rotation of the linkage portion 13, and the direction of rotation of the first internal thread is opposite to the direction of rotation of the transmission portion 12, so as to facilitate the linkage portion. 13 and the transmission part 12 are locked while rotating to prevent slippage.

In some embodiments of the present invention, the second joint pipe 32 is not provided with the locking sleeve 34, and a part of the second joint pipe 32 is accommodated and used in any one of close fitting, screwing or taper self-locking. It is detachably and fixedly connected with the first connecting pipe 21 in this way.

4, the inside of the first connecting tube 21 communicates with the receiving cavity 222, and the inner diameter of the first connecting tube 21 is smaller than the inner diameter of the receiving cavity 222, so that the components cannot enter the first A connecting tube 21 inside.

2, the outer side wall of the first main body tube 22 is provided with a hollow area (not marked in the figure) to communicate with the receiving cavity 222 to facilitate observation of the components. Specifically, referring to FIGS. 1 and 4, the hollow area (not labeled in the figure) is symmetrically opened along the central axis 16, and the hollow area includes a first hollow area 43 and a second hollow area 44.

In some embodiments of the present invention, the first hollow area 43 and the second hollow area 44 have the same structure.

In some embodiments of the present invention, the outer side wall of the first main body tube 22 is symmetrically provided with an even number of the hollow areas along the central axis 16. Specifically, the two hollow areas symmetrical with respect to the central axis 16 have the same structure.

Fig. 5 is a cross-sectional view of the assembly structure composed of the transmission part and the rotation part shown in Fig. 1 along the A-A direction shown in Fig. 1.

1, 2 and 5, the rotating part 11 has a second connecting tube 23 and a second main body tube 24 that are connected and communicated internally, and the outer diameter of the second connecting tube 23 is smaller than that of the second main body The outer diameter of the tube 24. The second connecting tube 23 is received by the distal end of the first main body tube 22 and is detachably fixedly connected to the first main body tube 22, and the distal end surface of the second main body tube 24 is along the central axis 16 The connection through holes are symmetrically opened, and the connection through holes include a first connection through hole 25 and a second connection through hole 26. The second main body tube 24 is driven by a drive motor (not shown in the figure) to rotate through the first connection through hole 25 and the second connection through hole 26, thereby driving the transmission portion 12 and the rotation portion 11 Synchronous rotation.

In some embodiments of the present invention, at least part of the outer side wall of the second connecting tube 23 is provided with a second external thread, and a part of the inner side wall of the first main body tube 22 is provided with a second external thread that is adapted to the second external thread. The second internal thread is used to make the second connecting pipe 23 and the first main body pipe 22 detachably and fixedly connected in a screwed manner.

Specifically, the direction of rotation of the second internal thread is opposite to the direction of rotation of the transmission part 12, and the direction of rotation of the second external thread is opposite to the direction of rotation of the rotating part 11, so as to facilitate the rotation of the rotating part. 11 and the transmission part 12 are locked while rotating to prevent slippage.

In some embodiments of the present invention, the second connecting pipe 23 and the first main body pipe 22 are detachably and fixedly connected in a taper self-locking manner. For the specific implementation of the taper self-locking, please refer to the foregoing description of the locking sleeve. The description of the taper self-locking manner of the tube 34 and the first connecting tube 21 will not be repeated here.

In some embodiments of the present invention, at least a part of the outer side wall of the second connecting tube 23 is tightly attached to a part of the inner side wall of the first main body tube 22 to realize the detachable and fixed connection.

In some embodiments of the present invention, the rotating portion 11 has a rotating drive component and a channel, and the distal end surface of the second main body tube 24 is provided with connecting through holes symmetrically along the central axis 16 to drive through the rotation The component is fixedly connected to the channel.

Specifically, referring to FIGS. 2 and 5, the outer side wall of the second connecting pipe 23 is formed with a channel 51, and the connecting through hole (not marked in the figure) includes the first connecting through hole 25 and the first connecting through hole 25 and the second connecting hole. Two connection through holes 26. The rotating part 11 has a first rotating driving part 27 and a second rotating driving part 28 to constitute a rotating driving part of the rotating part 11. The first connection through hole 25 and the second connection through hole 26 are both in communication with the channel 51, and the first rotation driving part 27 and the second rotation driving part 28 are respectively connected through the second connection The through hole 26 and the first connecting through hole 25 are detachably fixed to the channel 51 to drive the rotating part 11 to rotate.

In some specific embodiments of the present invention, the first rotation driving part 27 and the second rotation driving part 28 are both pins, and are riveted through the first connection through hole 25 and the second connection. The through hole 26 is fixed to the channel 51.

In some embodiments of the present invention, the rotating portion 11 has a fixed component, and the outer side wall of the second connecting pipe 23 is symmetrically provided with an even number of pin through holes along the central axis 16.

In some embodiments of the invention. The two pin through holes that are symmetrical to each other have the same structure.

Specifically, referring to FIG. 2, the rotating part 11 has a first fixing member 29, a first pin through hole 241 is opened on the outer side wall of the second connecting tube 23, and the first fixing member 29 passes through the first The pin through hole 241 is detachably fixedly connected to the second connecting pipe 23.

1 and 2, the rotating part 11 further has a second fixing part (not labeled in the figure) to form a fixing part of the rotating part 11 together with the first fixing part 29, and the second connection The outer side wall of the tube 23 is also provided with a second pin through hole (not shown in the figure) that is symmetrical to the first pin through hole 241 along the central axis 16, and the second fixing member (not shown in the figure) is connected to For the connection relationship between the second pin through holes (not marked in the figure), please refer to the connection relationship between the first fixing member 29 and the first pin through hole 241.

In some specific embodiments of the present invention, the first fixing part 29 and the second fixing part are both plug pins.

Fig. 6 is a schematic structural diagram of an ultrasonic device according to an embodiment of the present invention. FIG. 7 is a schematic diagram of the structure of the sheath tube joint shown in FIG. 6. Fig. 8 is a cross-sectional view of the assembly structure composed of the sheath tube joint and part of the rotating assembly shown in Fig. 6 along the direction B-B shown in Fig. 6.

6 and 7, the ultrasonic device shown in FIG. 6 has a sheath tube joint 6 and the rotating assembly 1, and the sheath tube joint 6 is hollow and has two ends open. The sheath tube connector 6 is composed of a first sheath tube connector 61 and a second sheath tube connector 62 that are connected in sequence. The outer side wall of the first sheath tube joint 61 is provided with a semi-through hole 73 to be detachably fixedly connected to a cylindrical sleeve (not shown in the figure). The outer side wall of the first sheath tube connector 61 is also provided with two limiting through holes, namely, a first limiting through hole 71 and a second limiting through hole 72. A first locking structure 74 and a second locking structure (not marked in the figure) are provided on the end side wall of the second sheath tube connector 62 symmetrically with respect to the central axis of the sheath tube connector 6, so as to detachably connect the ultrasound The sheath of the device (not shown in the figure).

In some embodiments of the present invention, an open end of the sheath tube connector 6 accommodates a part of the linkage part 13, the bearing assembly 14 and the transmission part 12, so that the sheath tube connector 6 is not affected by the The rotation of the rotating assembly 1 causes movement.

In some embodiments of the present invention, a first cavity is defined between the inner side walls of the sheath tube connector 6 to accommodate the bearing assembly 14 and enable the bearing assembly 14 to be in clearance fit with the inner side wall of the sheath tube connector 6 An annular groove is formed on the inner side wall of the sheath tube connector 6 to limit the position of the proximal end of the bearing assembly 14.

Referring to FIG. 8, one open end of the first sheath tube joint 61 accommodates the first joint tube 31, a part of the second joint tube 32, the bearing assembly 14 and a part of the transmission part 12. The end surface of the annular groove (not shown in the figure) opened in the second sheath tube connector 62 is opposite to the proximal end of the first bearing 141 to define the position of the proximal end of the first bearing 141. The cavity in the first sheath connector 61 between the proximal end of the first assembly sleeve 142 and the distal end of the first bearing 141 is the first cavity, and the first bearing 141 It is in clearance fit with the inner side wall of the first sheath tube connector 61 surrounding the first cavity.

In some embodiments of the present invention, a second cavity is defined between the inner side walls of the sheath tube connector 6 to accommodate the first connector tube 31 of the linkage part 13 and connect the first connector tube 31 to The inner wall of the sheath tube connector 6 has a clearance fit.

Specifically, referring to Figure 8, the second sheath connector 62 and the cavity in the first sheath connector 61 for accommodating the structure between the free end and the distal end of the first connector tube 31 are defined by In the second cavity, the first connector tube 31 is in clearance fit with the inner side wall of the second sheath tube connector 62 surrounding the second cavity.

In some embodiments of the present invention, a third cavity is defined between the inner side walls of the sheath tube connector 6 to accommodate the structure between the distal end of the first connector tube 31 and the proximal end of the bearing assembly 14 .

Specifically, referring to Figure 8, the cavity in the first sheath connector 61 between the distal end of the first connector tube 31 and the proximal end of the first assembly sleeve 142 is the third Cavity.

In some embodiments of the present invention, a sealing structure is provided in the third cavity to prevent liquid substances from entering the third cavity through the second cavity.

In some specific embodiments of the present invention, the sealing structure is a sealing ring tightly sleeved on the second joint pipe 32.

In some embodiments of the present invention, a fourth cavity is further defined between the inner side walls of the sheath tube connector 6 to respectively communicate with the other open end of the sheath tube connector 6 and the second cavity.

Specifically, referring to Figure 8, the inside of the second sheath tube connector 62, the cavity between the free end of the second sheath tube connector 62 and the free end of the first connector tube 31 is the fourth The diameter of the fourth cavity in the direction toward the free end of the second sheath connector 62 is continuously increased to improve the degree of freedom of cable movement.

In some embodiments of the present invention, the inner side wall of the second sheath tube connector 62 that encloses the fourth cavity has a taper, so that the fourth cavity extends in a direction toward the free end of the second sheath tube connector 62 The diameter continues to increase. Specifically, the taper of the inner side wall of the second sheath tube connector 62 surrounding the fourth cavity is 6 degrees.

In some embodiments of the present invention, the taper of the inner side wall of the second sheath tube connector 62 surrounding the fourth cavity is 3-6 degrees.

In some embodiments of the present invention, the ultrasonic device further includes at least two limiting members, so as to act on the distal end of the bearing assembly 14 and the linkage in different directions through the at least two limiting through holes. The portion between the distal ends of the portion 13 so as to define the position of the distal end of the bearing assembly 14.

Specifically, referring to Figures 7 and 8, the ultrasonic device has two limiting members (not marked in the figure) to be inserted into the first limiting through hole 71 and the second limiting through hole 72, respectively. It acts on the position between the distal end of the first bearing 141 and the proximal end of the locking sleeve 34 in different directions, thereby defining the position of the distal end of the first bearing 141.

In some embodiments of the present invention, the included angle between the central axis of the first limiting through hole 71 and the central axis of the second limiting through hole 72 is 90 degrees.

In some embodiments of the present invention, the limiting member is a bolt.

In some embodiments of the present invention, the ultrasonic device further includes a cylindrical sleeve.

FIG. 9 is a schematic diagram of an assembly structure of a cylindrical sleeve and the ultrasonic device shown in FIG. 6 according to an embodiment of the present invention.

6 and 9, the cylindrical sleeve 9 accommodates the rotating assembly 1 and part of the sheath tube connector 6, and can be detachably fixedly connected to the sheath tube connector 6, so that the sheath tube connector and the tube The sleeve does not move due to the rotation of the rotating assembly 1.

In some embodiments of the present invention, referring to FIGS. 6 and 9, in the sheath tube connector 6, part of the second sheath tube connector 62 and the first lock provided on the outer side wall of the second sheath tube connector 62 The structure 74 and the second locking structure (not marked in the figure) are located outside the cylindrical sleeve 9.

In some embodiments of the present invention, referring to FIG. 9, the outer side wall of the cylindrical sleeve 9 is further provided with a fixing hole (not shown in the figure) opposite to the half-through hole 73, so that the fixing member can pass through the fixing hole. (Not marked in the figure) is arranged in the half-through hole 73 to realize the detachable and fixed connection between the cylindrical sleeve 9 and the first sheath joint 61.

In some embodiments of the present invention, the fixing member is a bolt.

In some embodiments of the present invention, there is a gap between the inner side wall of the cylindrical sleeve 9 and the outer side wall of the rotating assembly 1, so as to prevent the rotation of the rotating assembly 1 like the sheath tube joint 6. Movement occurs.

In some embodiments of the present invention, the cylindrical sleeve 9 is symmetrically provided with a first fixing hole 611 and a second fixing hole (not marked in the figure), and two fixing members (not marked in the figure) pass through the first fixing hole. 611 and the second fixing hole (not marked in the figure) are fixedly connected to the first half through hole 512 and the second half through hole (not marked in the figure) opened on the outer side wall of the sheath tube connector 51, so that the rotation During the high-speed rotation of the assembly 1, the cylindrical sleeve 61 and the sheath tube joint 6 can not move relative to the rotating assembly 1, so as to facilitate the signal passing through the rotating assembly 1 and the sheath tube joint 6 The transmission line and the shielded line can drive the ultrasonic transducer to rotate and return signals.

In some embodiments of the present invention, the ultrasonic device further includes cables and components.

FIG. 10 is a schematic diagram of the assembly structure of the cables and components according to the embodiment of the present invention and the transmission part and the rotation part shown in FIG. 5.

10, the cable 101 is electrically connected to the component 102 and penetrates the rotating part 11 and the transmission part 12 to enter the sheath joint 6, and the component 102 is suspended in the receiving cavity 222, So as to follow the rotation of the transmission part 12.

In some embodiments of the present invention, in order to strengthen the fixing effect of the component 102, the inner wall of the receiving cavity 222 is further provided with a bracket to further fix and connect the component 102. The bracket supports the component 102 and the part directly electrically connected to the component 102.

11, the first bearing 141, the second bearing 1101, the first assembly sleeve 142 and the second assembly sleeve (not shown in the figure) constitute the bearing assembly of FIG. 11 (not shown in the figure), Please refer to the foregoing description for the assembly method between the first bearing 141, the first assembly sleeve 142 and the second joint pipe 32, and will not be repeated here. The second bearing 1101 is assembled to the second assembly sleeve (not shown in the figure) in an interference fit, and the second assembly sleeve (not shown in the figure) is fixedly sleeved on the transmission part 12 The first connecting pipe 21. The first connecting tube 21 is detachably fixedly connected to the second connecting tube 32 to drive the second connecting tube 32 to rotate synchronously through the rotation of the transmission part 12.

8 and 11, the second bearing 1101 is in clearance fit with the inner side wall of the first sheath tube joint 61, and the outer side wall of the first joint tube 31 is sleeved with a sealing ring 1102 to prevent liquid substances from passing through The inside of the second sheath tube connector 62 and the first connector tube 31 enter the cavity between the inner side wall of the first sheath tube connector 61.

Although the embodiments of the present invention are described in detail above, it is obvious to those skilled in the art that various modifications and changes can be made to these embodiments. However, it should be understood that such modifications and changes fall within the scope and spirit of the present invention described in the claims. Moreover, the present invention described here may have other embodiments, and may be implemented or realized in various ways.

Claims

A rotating assembly applied to an ultrasonic device, characterized in that it comprises a rotating part, a transmission part and a linkage part which are arranged along the same central axis. End away from the free end of the linkage part;

The rotating part, the transmission part and the linkage part are all hollow tubes symmetrical with respect to the central axis, and the center of gravity of the rotating assembly is located on the central axis;

The rotating part is detachably fixedly connected to the transmission part through the distal end of the transmission part;

The transmission part is provided with a receiving cavity to accommodate the components of the ultrasonic device in the receiving cavity through the distal end of the transmission part or the distal end of the rotating part;

The outer wall of the linkage portion is fixedly sleeved with a bearing assembly to reduce the frictional resistance between the transmission portion and the linkage portion;

The part of the structure between the distal end of the bearing assembly and the distal end of the linkage part is accommodated in the proximal end of the transmission part and can be detachably fixedly connected to the transmission part.
The rotating assembly according to claim 1, wherein the detachable fixed connection is threaded screwing or taper fitting.
The rotating assembly according to claim 2, wherein the detachable and fixed connection is the threaded engagement, and the thread directions of the rotating part, the transmission part and the linkage part are respectively different from the respective thread directions of the rotating part, the transmission part and the linkage part. The direction of rotation is opposite to achieve self-locking during rotation.
The rotating assembly according to claim 1, wherein the transmission part comprises a first main body tube and a first connecting tube that are sequentially connected, and the first main body tube is detachably fixedly connected to the rotating part, so The first connecting tube is detachably fixedly connected to at least part of the structure between the distal end of the bearing assembly and the distal end of the linkage portion, and the outer diameter of the first connecting tube and the outer diameter of the bearing assembly are both smaller than the outer diameter of the bearing assembly. The outer diameter of the first main body tube, and the outer diameter of the first connecting tube is greater than the outer diameter of the linkage portion.
The rotating assembly according to claim 4, wherein the first main body tube is provided with the accommodating cavity inside, and the outer side wall of the first main body tube is symmetrically provided with a hollow area along the central axis to It is communicated with the receiving cavity to facilitate observation of the components.
The rotating assembly according to claim 4, wherein the rotating part comprises a second main body tube and a second connecting tube that are sequentially connected and communicated internally, and the outer diameter of the second main body tube is not smaller than the The outer diameter of the first main body tube, the outer diameter of the second connecting tube is smaller than the outer diameter of the first main body tube, so as to be accommodated and detachably fixedly connected to the first main body tube through the distal end of the first main body tube In the main body tube, the component is accommodated in the receiving cavity through the distal end of the second main body tube.
The rotating assembly according to claim 6, further comprising a rotating drive component, the outer side wall of the second connecting tube is provided with a channel, and the distal end surface of the second main body tube is symmetrical along the central axis A connecting through hole is opened, and the connecting through hole communicates with the groove, so that the rotation driving component is fixed to the groove through the connecting through hole and drives the rotating part to rotate.
The rotating assembly according to claim 6, further comprising a fixing part, and the outer side wall of the second main body tube is symmetrically provided with pin through holes along the central axis to detachably and fixedly connect the fixing part, And prevent the rotating part from slipping off during the rotating process.
The rotating assembly according to claim 1, wherein the bearing assembly comprises at least two bearings arranged at intervals along the direction of the central axis.
The rotating assembly according to claim 9, wherein the bearing is a rolling bearing or a sliding bearing.
An ultrasonic device, characterized by comprising a sheath tube joint and the rotating assembly according to any one of claims 1-10, wherein the sheath tube joint is hollow and open at both ends;

The rotating assembly includes a rotating part, a transmission part and a linkage part arranged in sequence, and the outer wall of the linkage part is fixedly sleeved with a bearing assembly;

One open end of the sheath tube joint accommodates a part of the linkage part, a part of the transmission part and the bearing assembly, so that the sheath tube joint does not move with the rotation of the rotating assembly.
The ultrasonic device according to claim 11, wherein a first cavity is defined between the inner side walls of the sheath tube connector to accommodate the bearing assembly and make the bearing assembly and the inner side of the sheath tube connector The wall clearance fits, and the inner side wall of the sheath tube connector is provided with an annular groove to define the position of the proximal end of the bearing assembly.
The ultrasonic device according to claim 11, wherein the linkage part comprises a first joint tube, and the first joint tube is located between the proximal end of the linkage part and the proximal end of the bearing assembly, so A second cavity is also defined between the inner sidewalls of the sheath tube connector to accommodate the first connector tube and make the first connector tube a clearance fit with the inner sidewall of the sheath tube connector.
The ultrasonic device according to claim 13, wherein a third cavity is defined between the inner sidewalls of the sheath tube connector to accommodate the distal end of the first connector tube and the proximal end of the bearing assembly In the structure between, the third cavity is provided with a sealing structure to prevent liquid substances from entering the third cavity through the second cavity.
The ultrasound device according to claim 14, wherein a fourth cavity is further defined between the inner side walls of the sheath tube connector to respectively communicate with the other open end of the sheath tube connector and the second cavity The diameter of the fourth cavity in the direction toward the other open end of the sheath tube joint is continuously increased, so as to improve the freedom of movement of the cable.
The ultrasonic device according to claim 11, further comprising a limiting member, and at least two limiting through holes are opened on the outer side wall of the sheath tube joint so as to act in different directions through the limiting member It is located between the distal end of the bearing assembly and the distal end of the linkage part, thereby limiting the position of the distal end of the bearing assembly.
The ultrasonic device according to claim 11, further comprising a cable and components, a receiving cavity is provided in the transmission part, and the cable is electrically connected to the components and penetrates the rotating assembly to enter the In the sheath tube joint, the components are suspended in the receiving cavity.
The ultrasonic device according to claim 11, further comprising a cylindrical sleeve, the cylindrical sleeve accommodating the rotating assembly and part of the sheath tube joint, and is detachably fixedly connected to the sheath tube joint, So that the sheath tube joint and the cylindrical sleeve do not move due to the rotation of the rotating assembly.