Rope fastening device, rope transmission device and ultrasonic probe

Abstract

The application relates to a rope fastening device, a rope transmission device and an ultrasonic probe. The rope fastening device comprises a driving shaft, a rope and a fixing piece. The driving shaft is provided with a rope passing hole and a fixing hole, and the fixing hole is communicated with the rope passing hole. The rope passing hole penetrates the driving shaft, and both ends of the rope passing hole are located on the side wall of the driving shaft. The rope is arranged in the rope passing hole. The rope is inserted into the rope passing hole from one end and is pulled out from the other end. The fixing piece is arranged in the fixing hole. The end of the fixing piece close to the rope passing hole is provided with an end face, and at least part of the end face is in abutment with the rope to fix the rope in the rope passing hole. The scheme provided by the application can exert greater force on the rope by the fixing piece, thereby improving the fixing effect on the rope; and the end (the end head and / or the end tail) of the rope can be prevented from falling off, thereby improving the fastening reliability of the rope.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a rope fastening device, a rope transmission device, and an ultrasonic probe. Background Technology

[0002] An ultrasonic probe with three-dimensional imaging capabilities is called a 3D ultrasonic probe. It typically contains a stepper motor as a driving power source. Under signal control, the stepper motor drives the ultrasonic probe to swing within a certain angle through a transmission system.

[0003] 3D ultrasound probes are further divided into surface 3D ultrasound probes and intracavitary 3D ultrasound probes. Intracavitary 3D ultrasound probes are generally driven by a rope. Specifically, the rope drive device includes a passive shaft, pulleys, a drive shaft, and a rope. The probe array elements of the 3D ultrasound probe are mounted on the passive shaft. The two ends of the rope pass through radial holes in the drive shaft and are fixed by fasteners. Furthermore, the rope is connected to the passive shaft via pulleys. Thus, rotation of the drive shaft, in turn, drives the passive shaft to rotate via the rope.

[0004] However, in the above structure, the drive shaft has a poor fixing effect on the rope, which makes the rope prone to loosening and falling off. Summary of the Invention

[0005] Therefore, it is necessary to provide a rope fastening device, a rope transmission device, and an ultrasonic probe to address the problem of poor rope fixation effect of the drive shaft of the rope transmission device.

[0006] In a first aspect, this application provides a rope fastening device for an ultrasonic probe, comprising: a drive shaft, a rope, and a fixing member. The drive shaft has a rope threading hole and a fixing hole, the fixing hole communicating with the rope threading hole. The rope threading hole extends through the drive shaft, and both ends of the rope threading hole are located on the sidewall of the drive shaft. The rope passes through the rope threading hole. Specifically, the rope extends into the rope threading hole from one end and extends out from the other end. The fixing member passes through the fixing hole. The end of the fixing member near the rope threading hole has an end face, at least a portion of which abuts against the rope to secure the rope within the rope threading hole.

[0007] In one embodiment, the rope-threading hole is a straight hole.

[0008] In one embodiment, the number of fixing holes is two, and the two fixing holes are spaced apart on the drive shaft.

[0009] In one embodiment, the centerline of the rope hole intersects the axis of the drive shaft.

[0010] In one embodiment, the centerline of the rope hole is not perpendicular to the axis of the drive shaft.

[0011] In one embodiment, two fixing holes are disposed on both sides of the rope threading hole, and the center lines of both fixing holes are perpendicular to the axis of the drive shaft. A portion of the end face abuts against the rope.

[0012] In one embodiment, there is a first spacing between the center lines of the two fixing holes.

[0013] The ratio of the length of the first spacing to the length of the rope hole is between 0.4 and 0.6.

[0014] In one embodiment, the two fixing holes are arranged in a centrally symmetrical manner along the center of the rope threading hole.

[0015] In one embodiment, two fixing holes are disposed on both sides of the rope threading hole, and the center lines of both fixing holes are perpendicular to the center line of the rope threading hole. The entire end face abuts against the rope.

[0016] In one embodiment, a second spacing is provided between the centerlines of the two fixing holes.

[0017] The ratio of the length of the second spacing to the length of the rope hole is between 0.3 and 0.7.

[0018] In one embodiment, the two fixing holes are arranged in a centrally symmetrical manner along the center of the rope threading hole.

[0019] In one embodiment, the centerline of the rope hole is perpendicular to the axis of the drive shaft.

[0020] In one embodiment, the centerlines of both fixing holes are perpendicular to the centerline of the rope threading hole, and the centerlines of both fixing holes are parallel to the axis of the drive shaft. The entire end face abuts against the rope.

[0021] In one embodiment, the centerlines of both fixing holes are perpendicular to the centerline of the rope threading hole. Specifically, the centerline of one fixing hole is perpendicular to the axis of the drive shaft, and the centerline of the other fixing hole is parallel to the axis of the drive shaft. The entire end face abuts against the rope.

[0022] In one embodiment, the fixing hole includes a first hole segment and a second hole segment that communicate with each other. One end of the first hole segment communicates with the rope threading hole, and the other end of the first hole segment communicates with the second hole segment. The diameter of the first hole segment is larger than the diameter of the second hole segment.

[0023] The fastener includes a first part and a second part connected to each other, the first part being located in a first hole segment and the second part being located in a second hole segment. The outer diameter of the first part is larger than the outer diameter of the second part. The first part is constructed as an elastic structure.

[0024] Secondly, this application provides a rope drive device for an ultrasonic probe, the rope drive device including a driven shaft and a rope fastening device as described in the first aspect, wherein the rope of the rope fastening device is connected to the driven shaft.

[0025] Thirdly, this application provides an ultrasonic probe that includes the rope drive device described in the second aspect.

[0026] The aforementioned rope fastening device, rope transmission device, and ultrasonic probe, by having at least a portion of the end face of the fixing member abut against the rope, allow force to be applied to the rope through the end face of the fixing member. Compared to applying force to the rope through the side of the fixing member, the fixing member in this application applies a greater force to the rope, resulting in a better rope fastening effect. Furthermore, by threading the rope from one end of the rope hole to the other end, compared to threading both the beginning and end of the rope through the rope hole, the rope threading method in this application makes rope assembly more convenient and prevents the ends (beginning and / or end) of the rope from falling off, thereby improving the reliability of rope fastening. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of a rope fastening device provided in one embodiment of this application;

[0029] Figure 2 A schematic diagram of another rope fastening device provided in an embodiment of this application;

[0030] Figure 3 A schematic diagram of another rope fastening device provided in an embodiment of this application;

[0031] Figure 4 A schematic diagram of the structure of another rope fastening device provided in an embodiment of this application;

[0032] Figure 5This is an assembly diagram of the rope hole, fixing hole, and fastener provided in one embodiment of this application;

[0033] Figure 6 This is a schematic diagram of the structure of a rope transmission device provided in an embodiment of this application;

[0034] Figure 7 for Figure 6 The diagram shows a partial structural representation of the rope transmission device from a first-view perspective.

[0035] Figure 8 for Figure 6 The diagram shows a partial structure of the rope drive device from a second-view perspective.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1-Rope drive device; 10-Rope fastening device; 11-Drive shaft; 111-Rope threading hole; 112-Fixing hole; 1121-First hole section; 1122-Second hole section; 12-Rope; 13-Fixing component; 13a-End face; 131-First part; 132-Second part; 20-Driven shaft; 30-Sound head. Detailed Implementation

[0038] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0039] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0044] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. Meanwhile, in this specification, the term “and / or” includes any and all combinations of the associated listed items.

[0045] As described in the background section, in related technologies, both ends of the rope are inserted into the radial holes of the drive shaft, and the fixing member is inserted into the shaft hole of the drive shaft. The side wall of the fixing member and the inner wall of the shaft hole cooperate to compress the two ends of the rope, thereby achieving the purpose of fixing the rope. However, on the one hand, the above structure fixes both ends of the rope at the same time, which leads to the risk that one end of the rope may fall off; on the other hand, the above structure has a poor fixing effect on the rope, making the rope prone to loosening and falling off.

[0046] In view of the above problems, this application provides a rope fastening device, a rope transmission device, and an ultrasonic probe, which on the one hand improves the fixing effect of the rope, and on the other hand prevents the ends (head and / or tail) of the rope from falling off, thereby improving the fastening reliability of the rope.

[0047] Firstly, referring to Figures 1 to 5 As shown in the figure, this application embodiment provides a rope fastening device 10 for an ultrasonic probe. The rope fastening device 10 includes: a drive shaft 11, a rope 12, and a fixing member 13. The drive shaft 11 has a rope threading hole 111 and a fixing hole 112, and the fixing hole 112 communicates with the rope threading hole 111. The rope threading hole 111 passes through the drive shaft 11, and both ends of the rope threading hole 111 are located on the side wall of the drive shaft 11.

[0048] Specifically, the rope 12 is threaded through the rope hole 111. The rope 12 extends into the rope hole 111 from one end and extends out from the other end. This effectively places the middle portion of the rope 12 within the rope hole 111. Compared to threading both ends of the rope 12 through the hole 111, this application uses a single, continuous rope 12 for fixing. Because it is a single rope 12, there is no risk of the end or tail of the rope 12 detaching. When threading the rope, only one end (either the beginning or the end) needs to be passed through the rope hole 111; it is not necessary to insert both ends into the hole, making the assembly of the rope 12 more convenient. Furthermore, it prevents the ends (beginning and / or end) of the rope 12 from detaching, thereby improving the reliability of the rope 12's fastening.

[0049] Specifically, the fastener 13 passes through the fixing hole 112. The end of the fastener 13 near the rope hole 111 has an end face 13a, at least a portion of which abuts against the rope 12 to fix the rope 12 within the rope hole 111. Here, the fastener 13 is used to fix the rope 12, and the fastener 13 can be a fixing pin, screw, bolt, etc. When the fastener 13 is a fixing pin, the fixing hole 112 can be a pin hole; when the fastener 13 is a screw or bolt, the fixing hole 112 can be a threaded hole. In this case, the tightness of the rope 12 can be controlled by adjusting the screw or bolt's insertion depth, ensuring sufficient compression of the rope 12 and improving the reliability of the fixation. Alternatively, the fastener 13 can also be a wax, adhesive, etc., that meets strength requirements. Specifically, it is injected into the fixing hole 112 in a liquid state, and after solidification, it fixes the rope 12 within the rope hole 111.

[0050] Understandably, the fixing hole 112 can be a countersunk hole, and the head of the screw or bolt can be nested in the countersunk hole to make the side of the drive shaft 11 flat. The two ends of the rope hole 111 can be provided with chamfered outer corners to facilitate the rope 12 to be passed through the rope hole 111.

[0051] It should be noted that the "end face 13a" of the fastener 13 refers to the surface of the end of the fastener 13 along the axial direction, while the "side face" of the fastener 13 refers to the surface of the outer wall of the fastener 13 along the radial direction. It is understood that when the fastener 13 is "inserted" or "screwed" into the fixing hole 112, the fastener 13 is fed towards the rope hole 111 along its own axial direction. Simultaneously, the fastener 13 exerts a certain clamping force in its own axial direction. Since at least a portion of the end face 13a of the fastener 13 is in contact with the rope 12, this clamping force can be directly applied to the rope 12 through this at least portion of the end face 13a. Compared to the method in related technologies where the side face of the fastener 13 applies force to the rope 12, the fastener 13 in this application applies a greater force to the rope 12, resulting in a better fixing effect on the rope 12.

[0052] Furthermore, it should be emphasized that if the force is applied to the rope 12 using the side of the fastener 13, the fastener 13 cannot be a screw (or bolt), because the threads of a screw (or bolt) would scratch the rope 12. Additionally, even though the fastener 13 in related technologies is a combination of bolts and pins, it suffers from complex manufacturing and poor interchangeability. However, the embodiment of this application uses the end face 13a of the fastener 13 to apply the force, allowing the fastener 13 to be a standard part such as a screw, bolt, or pin, thus providing good interchangeability.

[0053] In one embodiment, reference Figures 1-5As shown, the rope hole 111 is a straight hole. Here, a straight hole can be understood as: the center line b of the rope hole 111 is a straight line.

[0054] By designing the rope hole 111 as a straight hole, on the one hand, it is easier to machine the rope hole 111 on the drive shaft 11, reducing the machining difficulty of the rope hole 111; on the other hand, it is easier to thread the rope 12 through the rope hole 111, reducing the assembly difficulty of the rope 12.

[0055] In one embodiment, there are two fixing holes 112, which are spaced apart on the drive shaft 11. It is understood that there are also two fixing members 13, with each fixing member 13 corresponding to one of the two fixing holes 112.

[0056] By setting two fixing holes 112, on the one hand, compared with the fixing method of setting only one fixing hole 112, the fixing stability of the drive shaft 11 to the rope 12 can be further improved. At the same time, the fixing parts 13 in the two fixing holes 112 can form a "double insurance", so that even if one of the fixing parts 13 becomes loose, the rope 12 will not become loose or fall off.

[0057] In one embodiment, reference Figures 1-4 As shown, the rope hole 111 intersects the axis a of the drive shaft 11, and the two ends of the rope hole 111 are located on the side walls on both sides of the radial direction of the drive shaft 11. Preferably, the center line b of the rope hole 111 intersects the axis a of the drive shaft 11.

[0058] by Figure 1 Taking the orientation in the middle as an example, this setting allows the length of the rope hole 111 in the "upper part" of the drive shaft 11 to be the same as the length of the rope hole 111 in the "lower part", so that the weight of the "upper part" and "lower part" of the drive shaft 11 is approximately equal, making the center of gravity of the drive shaft 11 evenly distributed. This avoids damage to the drive motor connected to the drive shaft 11 due to uneven gravity distribution, extends the service life of the drive motor, and at the same time, the drive shaft 11 is subjected to more balanced force during rotation, improving the rotational stability.

[0059] In one embodiment, reference Figure 1 As shown, the center line b of the rope hole 111 is not perpendicular to the axis a of the drive shaft 11. Figure 1 Taking the orientation in the middle as an example, this setting allows the two parts of the rope 12 located outside the rope hole 111 to be staggered in the axial direction of the drive shaft 11, thereby avoiding interference between the two parts of the rope 12 when the drive shaft 11 rotates.

[0060] In one embodiment, reference Figure 1As shown, two fixing holes 112 are provided on both sides of the rope threading hole 111, and the center lines c of the two fixing holes 112 are perpendicular to the axis a of the drive shaft 11, that is, the center lines c of the two fixing holes 112 are parallel to the radial direction of the drive shaft 11. At this time, a portion of the end face 13a of the fixing member 13 abuts against the rope 12.

[0061] by Figure 1 Taking the orientation in the middle as an example, the above setting, on the one hand, is equivalent to setting the two fixing parts 13 in the "upper half" and "lower half" of the drive shaft 11 respectively, so that the weight of the "upper half" and "lower half" of the drive shaft 11 is approximately equal, making the center of gravity of the drive shaft 11 evenly distributed, avoiding damage to the drive motor connected to the drive shaft 11 due to uneven gravity distribution, extending the service life of the drive motor, and at the same time, the drive shaft 11 is subjected to more balanced force during rotation, improving rotational stability; on the other hand, since the fixing hole 112 is a radial hole, the difficulty of drilling the fixing hole 112 can be reduced.

[0062] In one embodiment, reference Figure 1 As shown, there is a first gap L1 between the center lines c of the two fixing holes 112. The ratio of the length of the first gap L1 to the length of the rope hole 111 is between 0.4 and 0.6. Here, the length of the rope hole 111 refers to the distance between the openings at both ends of the rope hole 111.

[0063] It is understandable that the intersection of the fixing hole 112 and the rope threading hole 111 is the point where the fixing member 13 applies a fixing force to the rope 12. The above arrangement allows the distance between the two force application points to be moderate, that is, neither too close nor too far apart, so that the fixing effect of the drive shaft 11 on the rope 12 is better.

[0064] Specifically, the two fixing holes 112 are arranged symmetrically around the center of the rope threading hole 111, that is, the distance between one fixing hole 112 and the opening of its nearest rope threading hole 111 is equal to the distance between the other fixing hole 112 and the opening of its nearest rope threading hole 111.

[0065] The above configuration allows the two force application points to be distributed more evenly in the rope hole 111, thereby making the fixing force on the rope 12 more uniform and thus improving the fixing effect of the drive shaft 11 on the rope 12.

[0066] In one embodiment, reference Figure 2 As shown, two fixing holes 112 are provided on both sides of the rope threading hole 111, and the center line c of the two fixing holes 112 is perpendicular to the center line b of the rope threading hole 111. The entire end face 13a abuts against the rope 12.

[0067] In this way, on the one hand, all end faces 13a of the fastener 13 can abut against the rope 12, thereby increasing the clamping force applied by the fastener 13 to the rope 12 and improving the fixing effect of the rope 12; on the other hand, the drive shaft 11 generates centrifugal force in the radial direction when it rotates. Since the center line c of the fixing hole 112 is not parallel to the radial direction of the drive shaft 11, when the fastener 13 is about to loosen due to the centrifugal force, the hole wall of the fixing hole 112 will apply a reaction force parallel to the radial direction, thereby preventing the fastener 13 from loosening from the fixing hole 112 to the maximum extent, and thus improving the stability of the fastener 13.

[0068] In one embodiment, reference Figure 2 As shown, there is a second distance L2 between the center lines c of the two fixing holes 112. The ratio of the length of the second distance L2 to the length of the rope hole 111 is between 0.3 and 0.7. Here, the length of the rope hole 111 refers to the distance between the openings at both ends of the rope hole 111.

[0069] It is understandable that the intersection of the fixing hole 112 and the rope threading hole 111 is the point where the fixing member 13 applies a fixing force to the rope 12. The above arrangement allows the distance between the two force application points to be moderate, that is, neither too close nor too far apart, so that the fixing effect of the drive shaft 11 on the rope 12 is better.

[0070] Specifically, the two fixing holes 112 are arranged symmetrically around the center of the rope threading hole 111, that is, the distance between one fixing hole 112 and the opening of its nearest rope threading hole 111 is equal to the distance between the other fixing hole 112 and the opening of its nearest rope threading hole 111.

[0071] The above configuration allows the two force application points to be distributed more evenly in the rope hole 111, thereby making the fixing force on the rope 12 more uniform and thus improving the fixing effect of the drive shaft 11 on the rope 12.

[0072] In one embodiment, reference Figure 3 and Figure 4 As shown, the center line b of the rope hole 111 is perpendicular to the axis a of the drive shaft 11. In this way, the rope hole 111 is equivalent to a radial hole, which can reduce the difficulty of drilling the rope hole 111.

[0073] In one embodiment, reference Figure 3 As shown, the center lines c of the two fixing holes 112 are both perpendicular to the center line b of the rope hole 111, and the center lines c of the two fixing holes 112 are both parallel to the axis a of the drive shaft 11. The entire end face 13a abuts against the rope 12.

[0074] In this way, on the one hand, all end faces 13a of the fixing member 13 can abut against the rope 12, thereby increasing the clamping force applied by the fixing member 13 to the rope 12 and thus improving the fixing effect of the rope 12; on the other hand, when the drive shaft 11 rotates, the fixing member 13 is not affected by centrifugal force, thus maintaining stability.

[0075] Furthermore, the two fixing holes 112 are symmetrically arranged along the axis of the drive shaft 11. This ensures, on the one hand, that the distance between the two fixing members 13 is moderate—neither too close nor too far—leading to better fixation of the rope 12 by the drive shaft 11; on the other hand, it ensures a uniform distribution of the drive shaft 11's center of gravity, preventing damage to the drive motor connected to the drive shaft 11 due to uneven gravity distribution, thus extending the drive motor's service life. Simultaneously, during rotation, the drive shaft 11 experiences more balanced force, improving rotational stability.

[0076] In one embodiment, reference Figure 4 As shown, the center lines c of both fixing holes 112 are perpendicular to the center line b of the rope threading hole 111. Specifically, the center line c of one fixing hole 112 is perpendicular to the axis a of the drive shaft 11, and the center line c of the other fixing hole 112 is parallel to the axis a of the drive shaft 11. The entire end face 13a abuts against the rope 12.

[0077] In this way, on the one hand, all end faces 13a of the fastener 13 can abut against the rope 12, thereby increasing the clamping force applied by the fastener 13 to the rope 12 and thus improving the fixing effect of the rope 12; on the other hand, the clamping forces applied by the two fasteners 13 to the rope 12 are in different directions, thereby subjecting the rope 12 to clamping forces in two different directions, which further improves the fixing effect of the drive shaft 11 on the rope 12.

[0078] Specifically, a fixing hole 112 is provided on the side wall of the drive shaft 11, and the center line c of the fixing hole 112 is perpendicular to the axis a of the drive shaft 11; another fixing hole 112 is provided on the end face of the drive shaft 11, and the center line c of the fixing hole 112 is parallel to the axis a of the drive shaft 11.

[0079] Furthermore, the center line c of each fixing hole 112 is equidistant from the axis a of the drive shaft 11. This ensures a uniform distribution of the center of gravity of the drive shaft 11, preventing damage to the drive motor connected to the drive shaft 11 due to uneven gravity distribution, extending the service life of the drive motor, and improving the smoothness of rotation by ensuring more balanced force on the drive shaft 11 during rotation.

[0080] In one embodiment, reference Figure 5As shown, the fixing hole 112 includes a first hole segment 1121 and a second hole segment 1122 that are interconnected. One end of the first hole segment 1121 is connected to the rope hole 111, and the other end of the first hole segment 1121 is connected to the second hole segment 1122. The diameter of the first hole segment 1121 is larger than the diameter of the second hole segment 1122. The fixing member 13 includes a first part 131 and a second part 132 that are interconnected. The first part 131 is located in the first hole segment 1121, and the second part 132 is located in the second hole segment 1122. The outer diameter of the first part 131 is larger than the outer diameter of the second part 132. The first part 131 is constructed as an elastic structure. Here, the elastic structure can be considered as an elastic element.

[0081] By setting the first part 131 as an elastic element, when the fastener 13 is inserted into the fixing hole 112, the first part 131 can undergo elastic deformation, which makes it easier to insert the fastener 13 into the fixing hole 112.

[0082] In addition, the above-mentioned arrangement, on the one hand, makes it difficult for the fastener 13 to fall out of the fixing hole 112, thus improving the stability of the fastener 13; on the other hand, it increases the contact area between the end face 13a of the fastener 13 and the rope 12, thereby making the fastener 13 better at pressing the rope 12, and thus making the drive shaft 11 better at fixing the rope 12.

[0083] It is understandable that both the first part 131 and the second part 132 can be elastic elements.

[0084] Secondly, referring to Figure 6 , Figure 7 and Figure 8 and combined Figures 1-5 As shown, this application provides a rope drive device 1 for an ultrasonic probe. The rope drive device 1 includes a driven shaft 20 and a rope fastening device 10 as described in the first aspect. The rope 12 of the rope fastening device 10 is connected to the driven shaft 20.

[0085] Specifically, both ends of the rope 12 are connected to the driven shaft 20. When the driving shaft 11 rotates, it drives the driven shaft 20 to rotate via the rope 12.

[0086] The aforementioned rope transmission device 1, by having at least a portion of the end face 13a of the fixing member 13 abut against the rope 12, allows force to be applied to the rope 12 through the end face 13a of the fixing member 13. Compared to applying force to the rope 12 through the side of the fixing member 13, the fixing member 13 in this application applies a greater force to the rope 12, resulting in a better fixing effect on the rope 12. Furthermore, by passing the rope 12 from one end of the rope hole 111 to the other end of the rope hole 111, compared to passing both the beginning and end of the rope 12 through the rope hole 111, this application uses a single, complete rope 12 for fixing. Since it is a single rope 12, there is no risk of the beginning or end of the rope 12 falling off, thereby improving the reliability of the rope 12's fastening. In addition, the rope threading method in this application also makes the assembly of the rope 12 more convenient.

[0087] Thirdly, referring to Figure 6 , Figure 7 and Figure 8 and combined Figures 1-5 As shown, this application provides an ultrasonic probe, which includes the rope drive device 1 in the second aspect.

[0088] Specifically, the ultrasonic probe also includes a sound head 30 and a motor (not shown), which is connected to the drive shaft 11 and is used to drive the drive shaft 11 to rotate.

[0089] The aforementioned ultrasonic probe, by having at least a portion of the end face 13a of the fixing member 13 abut against the rope 12, allows force to be applied to the rope 12 through the end face 13a of the fixing member 13. Compared to applying force to the rope 12 through the side of the fixing member 13, the fixing member 13 in this application applies a greater force to the rope 12, resulting in a better fixing effect on the rope 12. Furthermore, by passing the rope 12 from one end of the rope hole 111 to the other end of the rope hole 111, compared to passing both the beginning and end of the rope 12 through the rope hole 111, this application uses a single, complete rope 12 for fixing. Since it is a single rope 12, there is no risk of the beginning or end of the rope 12 falling off, thereby improving the reliability of the rope 12's fastening. In addition, the rope-passing method in this application also makes the assembly of the rope 12 more convenient.

[0090] In the description of this specification, the references to terms such as "some embodiments," "other embodiments," "ideal embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example that are included in at least one embodiment or example of this application. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.

[0091] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features of the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0092] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A rope fastening device for an ultrasonic probe, characterized in that, The rope fastening device (10) includes: The drive shaft (11) has a rope hole (111) and a fixing hole (112), the fixing hole (112) is connected to the rope hole (111); the rope hole (111) passes through the drive shaft (11), and both ends of the rope hole (111) are located on the side wall of the drive shaft (11); A rope (12) is threaded through the rope hole (111); wherein the rope (12) extends into one end of the rope hole (111) and extends out through the other end of the rope hole (111); A fastener (13) is inserted into the fastening hole (112); the fastener (13) has an end face (13a) at one end near the rope hole (111), at least a portion of the end face (13a) abuts against the rope (12) to fix the rope (12) in the rope hole (111).

2. The rope fastening device according to claim 1, characterized in that, The rope hole (111) is a straight hole.

3. The rope fastening device according to claim 2, characterized in that, The number of fixing holes (112) is two, and the two fixing holes (112) are spaced apart on the drive shaft (11).

4. The rope fastening device according to claim 3, characterized in that, The centerline of the rope hole (111) intersects the axis of the drive shaft (11).

5. The rope fastening device according to claim 4, characterized in that, The centerline of the rope hole (111) is not perpendicular to the axis of the drive shaft (11).

6. The rope fastening device according to claim 5, characterized in that, Two fixing holes (112) are provided on both sides of the rope hole (111), and the center lines of the two fixing holes (112) are perpendicular to the axis of the drive shaft (11); a portion of the end face (13a) abuts against the rope (12).

7. The rope fastening device according to claim 6, characterized in that, There is a first spacing between the center lines of the two fixing holes (112); The ratio of the length of the first spacing to the length of the rope hole (111) is between 0.4 and 0.

6.

8. The rope fastening device according to claim 7, characterized in that, The two fixing holes (112) are arranged in a centrally symmetrical manner along the center of the rope threading hole (111).

9. The rope fastening device according to claim 5, characterized in that, The two fixing holes (112) are provided on both sides of the rope hole (111), and the center lines of the two fixing holes (112) are perpendicular to the center line of the rope hole (111); the entire end face (13a) abuts against the rope (12).

10. The rope fastening device according to claim 9, characterized in that, There is a second spacing between the center lines of the two fixing holes (112); The ratio of the length of the second spacing to the length of the rope hole (111) is between 0.3 and 0.

7.

11. The rope fastening device according to claim 10, characterized in that, The two fixing holes (112) are arranged in a centrally symmetrical manner along the center of the rope threading hole (111).

12. The rope fastening device according to claim 4, characterized in that, The centerline of the rope hole (111) is perpendicular to the axis of the drive shaft (11).

13. The rope fastening device according to claim 12, characterized in that, The center lines of the two fixing holes (112) are perpendicular to the center line of the rope hole (111), and the center lines of the two fixing holes (112) are parallel to the axis of the drive shaft (11); the entire end face (13a) abuts against the rope (12).

14. The rope fastening device according to claim 12, characterized in that, The center lines of both fixing holes (112) are perpendicular to the center line of the rope hole (111); wherein, the center line of one fixing hole (112) is perpendicular to the axis of the drive shaft (11), and the center line of the other fixing hole (112) is parallel to the axis of the drive shaft (11); the entire end face (13a) abuts against the rope (12).

15. The rope fastening device according to any one of claims 1-14, characterized in that, The fixing hole (112) includes a first hole segment (1121) and a second hole segment (1122) that are interconnected. One end of the first hole segment (1121) is connected to the rope hole (111), and the other end of the first hole segment (1121) is connected to the second hole segment (1122). The diameter of the first hole segment (1121) is larger than the diameter of the second hole segment (1122). The fastener (13) includes a first part (131) and a second part (132) connected to each other, the first part (131) being located in the first hole segment (1121) and the second part (132) being located in the second hole segment (1122); the outer diameter of the first part (131) is larger than the outer diameter of the second part (132); the first part (131) is constructed as an elastic structure.

16. A rope-driven device for an ultrasonic probe, characterized in that, The rope drive device (1) includes a driven shaft (20) and a rope fastening device (10) as claimed in any one of claims 1-15, wherein the rope (12) of the rope fastening device (10) is connected to the driven shaft (20).

17. An ultrasonic probe, characterized in that, Includes the rope drive device (1) as described in claim 16.

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