Sealing connection structure of transmission shaft in operation actuator and grinding and drilling machine formed by sealing connection structure

Abstract

The invention discloses a sealing connection structure of a transmission shaft in a surgical actuator, which comprises an actuator main body and an actuator protective cover, and the actuator protective cover sleeves the end part of the actuator main body; the actuator body comprises a body shell and a transmission shaft located at the axis of the body shell. A sliding sealing sliding sleeve is arranged on the inner side wall of the main body shell, and a clamping piece is arranged on the peripheral side of the transmission shaft; when the actuator protective cover is arranged at the end of the actuator body in a sleeving mode, the sealing sliding sleeve and the clamping piece are staggered, and when the actuator protective cover is separated from the end of the actuator body, the sealing sliding sleeve abuts against the clamping piece. When the actuator body and the actuator protective cover are installed, a certain gap is kept between the transmission shaft and the body shell, and when the actuator body and the actuator protective cover are separated, the transmission shaft clamping piece and the sealing sliding sleeve are connected in a sealed mode, it is ensured that during standing sterilization, the sealing sliding sleeve conducts sealing protection on the transmission shaft, and the service life of the grinding and drilling machine is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of drill grinding machine installation, and in particular to a sealing connection structure of a transmission shaft in a surgical actuator and a drill grinding machine formed by the sealing connection structure. Background Art

[0002] Surgical actuators such as drills need to be assembled during surgery, and then disassembled and separated before or after surgery for easy storage and transportation. The drive shaft in the drill needs to rotate at high speed driven by the drive motor, which requires a certain gap between the drive shaft and the housing to allow the drive shaft to rotate smoothly.

[0003] However, in the prior art, there is a certain distance between the transmission shaft and the outer casing. When the drill grinder is disassembled, it will be sterilized. At this time, the disinfectant will enter the transmission shaft through the gap between the transmission shaft and the outer casing, affecting the normal operation of the transmission shaft and the corresponding driving parts, and further affecting the normal service life of the drill grinder. Summary of the invention

[0004] The present invention aims to solve at least one of the problems in the related art to a certain extent. To this end, the purpose of the present invention is to provide a sealing connection structure of a transmission shaft in a surgical actuator and a drill grinder formed therefrom, which can achieve a certain gap between the transmission shaft and the main body shell when the actuator body and the actuator protective cover are installed, and when the actuator body and the actuator protective cover are separated, the transmission shaft clamping part and the sealing sleeve are sealed and connected, ensuring that the sealing sleeve seals and protects the transmission shaft during static sterilization, thereby improving the service life of the drill grinder.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solution: a sealing connection structure of a transmission shaft in a surgical actuator, comprising an actuator body and an actuator protective cover, wherein the actuator protective cover is sleeved on the end of the actuator body;

[0006] The actuator body includes a main body shell and a transmission shaft located at the axis of the main body shell; the inner side wall of the main body shell is provided with a sliding sealing sleeve, and the outer peripheral side of the transmission shaft is provided with a clamping piece;

[0007] When the actuator protective cover is sleeved on the end of the actuator body, the sealing sleeve and the clamping piece are misaligned; when the actuator protective cover is separated from the end of the actuator body, the sealing sleeve and the clamping piece are in contact.

[0008] Furthermore, the top end of the transmission shaft is fixed inside the actuator body, and the sealing sleeve is located on a side of the clamping member close to the top end of the transmission shaft.

[0009] Furthermore, a spring is provided at one end of the sealing sleeve away from the clamping piece, one end of the spring is fixedly connected to the main shell, and the other end of the spring abuts against the sealing sleeve.

[0010] Furthermore, an abutment ring is provided in the actuator protective cover. When the actuator protective cover is installed on the end of the actuator body, the abutment ring pushes the sealing sleeve to overcome the spring force and move in a direction away from the clamping part; when the actuator protective cover is separated from the actuator body, the sealing sleeve slides to the abutment position with the clamping part under the elastic force of the spring.

[0011] Furthermore, an anti-slip boss is arranged inside the main shell, and the anti-slip boss is located on a side of the sealing sleeve away from the spring.

[0012] Furthermore, the actuator protective cover is an L-shaped structure; the actuator protective cover includes a connecting corner, a connecting cover and a connecting nut, the connecting corner is an L-shaped structure, the connecting cover covers the side of the connecting corner close to the actuator body, and the connecting nut is located between the connecting cover and the connecting corner, and is used to limit the connecting cover and the connecting corner in the axial direction.

[0013] Furthermore, a first fixing groove is provided on the outer side of the connecting corner, and a second fixing groove is provided on the inner side of the connecting cover. In a direction perpendicular to the axis of the actuator protective cover, the first fixing groove and the second fixing groove overlap.

[0014] Furthermore, a positioning pin is provided on the inner side wall of the connection cover, and a positioning groove is provided in the connection corner.

[0015] Furthermore, a driving motor is arranged in the main shell, and the output end of the driving motor is connected to the transmission shaft; a transmission gear assembly and a tool are arranged inside the actuator protective cover; when the actuator protective cover is installed in the actuator body, the transmission shaft is fixedly connected to one end of the transmission gear assembly, and the other end of the transmission gear assembly is fixedly connected to the tool.

[0016] A grinding drill comprises the sealing connection structure of a transmission shaft in a surgical actuator as described above.

[0017] The above-mentioned technical scheme provided by the embodiment of the present application has the following advantages compared with the prior art: the sealing connection structure of the transmission shaft in the surgical actuator of the present application comprises an actuator body and an actuator protective cover, and the actuator protective cover is sleeved on the end of the actuator body; wherein the actuator body comprises a main body shell and a transmission shaft located at the axial center line of the main body shell; the inner side wall of the main body shell is provided with a sliding sealing sleeve, and the outer peripheral side of the transmission shaft is provided with a snap-in piece; when the actuator protective cover is sleeved on the end of the actuator body, the sealing sleeve and the snap-in piece are misaligned, and at this time, a certain gap is maintained between the transmission shaft and the main body shell to ensure that the transmission shaft can rotate smoothly. When the actuator protective cover is separated from the end of the actuator body, the sealing sleeve and the clamping piece abut against each other. At this time, the portion between the clamping piece and the top end of the transmission shaft is sealed, and the side from the clamping piece to the end of the transmission shaft, that is, the side installed with the actuator protective cover, is exposed. When performing the sterilization operation, the seal formed by the clamping piece and the sealing sleeve seals the inside of the actuator body to prevent disinfectant from entering the inside of the installation body, which can increase the service life of the internal parts of the installation body and extend the service life of the drill grinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 This is a schematic diagram of the overall structure of the actuator body and the actuator protective cover after assembly in this application;

[0021] Figure 2 It is a cross-sectional schematic diagram of the actuator body and the actuator protective cover after assembly in this application;

[0022] Figure 3 It is a cross-sectional schematic diagram of the junction of the actuator body and the actuator protective cover in this application;

[0023] Figure 4 It is a cross-sectional schematic diagram of the actuator body in this application;

[0024] Figure 5 It is a cross-sectional schematic diagram of the corner of the actuator protective cover in this application;

[0025] Figure 6 It is a structural schematic diagram of the connecting cover in this application;

[0026] Figure numerals: 31, actuator body; 311, sealing sleeve; 312, first sealing ring; 314, spring; 315, anti-drop boss; 316, snap-on piece; 41, actuator protective cover; 411, abutment ring; 412, connecting corner; 413, connecting cover; 414, connecting nut; 415, first fixing groove; 416, connecting assembly; 417, fixing pin; 44, driving motor; 45, transmission shaft; 46, transmission gear assembly; 47, tool. DETAILED DESCRIPTION

[0027] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the mechanism or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0028] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0029] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, mechanisms, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0030] Example 1

[0031] See also Figure 1-Figure 6 The present application provides a sealing connection structure of a transmission shaft in a surgical actuator, comprising an actuator body 31 and an actuator protective cover 41, wherein the actuator protective cover 41 is sleeved on the end of the actuator body 31; wherein the actuator body 31 comprises a main body shell and a transmission shaft 45 located at the axial center line of the main body shell; a sliding sealing sleeve 311 is provided on the inner side wall of the main body shell, and a clamping part 316 is provided on the outer peripheral side of the transmission shaft 45.

[0032] When the actuator shield 41 is sleeved on the end of the actuator body 31, the sealing sleeve 311 and the clamping member 316 are misaligned. At this time, a certain gap is maintained between the transmission shaft 45 and the main housing to ensure that the transmission shaft 45 can rotate smoothly. When the actuator shield 41 is separated from the end of the actuator body 31, the sealing sleeve 311 and the clamping member 316 are in contact. At this time, the portion between the clamping member 316 and the top of the transmission shaft 45 is sealed, and the portion between the clamping member 316 and the end of the transmission shaft 45, that is, the side installed with the actuator shield 41, is exposed; when performing the sterilization operation, the seal formed by the clamping member 316 and the sealing sleeve 311 seals the inside of the actuator body 31 to prevent the disinfectant from entering the inside of the installation body, which can increase the service life of the internal parts of the installation body and extend the service life of the drill grinder.

[0033] Example 2

[0034] See also Figure 1-Figure 6 The present application provides a sealing connection structure of a transmission shaft in a surgical actuator, comprising an actuator body 31 and an actuator shield 41, wherein the actuator shield 41 is sleeved on the end of the actuator body 31; wherein the actuator body 31 comprises a main body shell and a transmission shaft 45 located at the axis of the main body shell; the inner side wall of the main body shell is provided with a sliding sealing sleeve 311, and the outer peripheral side of the transmission shaft 45 is provided with a clamping member 316. When the actuator shield 41 is sleeved on the end of the actuator body 31, the sealing sleeve 311 and the clamping member 316 are misaligned, and at this time, a certain gap is maintained between the transmission shaft 45 and the main body shell to ensure that the transmission shaft 45 can rotate smoothly. When the actuator shield 41 is separated from the end of the actuator body 31, the sealing sleeve 311 and the clamping member 316 abut, and at this time, the inside of the actuator body 31 is sealed. By setting the positions of the sealing sleeve 311 and the clamping member 316, the sealing shaft is not sealed when rotating and is sealed when disassembled and stationary.

[0035] Furthermore, in the present application, the top end of the transmission shaft 45 is fixed inside the actuator body 31, and the clamping member 316 is located in the transmission shaft 45 near the end of the transmission shaft 45. The position of the clamping member 316 in the transmission shaft 45 is fixed. In order to ensure that the sealing position of the sealing sleeve 311 to the clamping member 316 is as biased as possible toward the end of the installation body, the present application sets the clamping member 316 to be located near the bottom of the transmission shaft 45. At the same time, the setting of the clamping member 316 also needs to consider that when the actuator body 31 and the actuator protective cover 41 are assembled, the clamping member 316 will not hinder the smooth installation of the actuator protective cover 41.

[0036] The sealing sleeve 311 described in the present application is located on the side of the clamping member 316 close to the top of the transmission shaft 45. That is to say, when the sealing sleeve 311 is misaligned with the clamping member 316, the sealing sleeve 311 slides in a direction close to the top of the transmission shaft 45 and away from the clamping member 316. When the sealing sleeve 311 needs to abut against the clamping member 316, the sealing sleeve 311 slides in a direction away from the top of the transmission shaft 45 and close to the clamping member 316 until the sealing sleeve 311 abuts against the clamping member 316 for sealing.

[0037] In the present application, a spring 314 is provided at one end of the sealing sleeve 311 away from the clamping member 316, one end of the spring 314 is fixedly connected to the main housing, and the other end abuts against the sealing sleeve 311. The spring 314 is used to drive the sealing sleeve 311 to slide along the axis of the installation body.

[0038] At the same time, an abutment ring 411 is provided in the actuator protective cover 41. When the actuator protective cover 41 is installed on the end of the actuator body 31, the abutment ring 411 pushes the sealing sleeve 311 to overcome the force of the spring 314 and move in the direction away from the clamping piece 316; when the actuator protective cover 41 is separated from the actuator body 31, the sealing sleeve 311 slides to the abutment position with the clamping piece 316 under the elastic force of the spring 314.

[0039] The driving force of the sealing sleeve 311 in the present application comes from the combined force of the abutting ring 411 and the spring 314. When the actuator shield 41 is away from the actuator body 31, the abutting ring 411 has no force on the sealing sleeve 311. At this time, the sealing sleeve 311 is only subjected to the force of the spring 314. In the present application, the spring 314 is always in a compressed state. When the abutting ring 411 is away from the sealing sleeve 311, the elastic force of the spring 314 on the sealing sleeve 311 causes the sealing sleeve 311 to slide to a position where it abuts against the clamping member 316. In the present application, the clamping member 316 is a component surrounding the transmission shaft 45, and the sealing sleeve 311 is also a part surrounding the transmission shaft 45. When the sealing sleeve 311 abuts against the clamping member 316, the sealing sleeve 311 is evenly clamped on the outer peripheral side of the clamping member 316 to achieve a 360° seal.

[0040] Furthermore, in order to ensure that the sealing sleeve 311 can stop when it slides to the position where it abuts against the clamping piece 316 under the elastic force of the spring 314, an anti-slip boss 315 is arranged inside the main shell of the present application, and the anti-slip boss 315 is located on the side of the sealing sleeve 311 away from the spring 314. When the spring 314 pushes the sealing sleeve 311 to slide to the position where it abuts against the anti-slip boss 315, the sealing sleeve 311 stops moving. At this time, the sealing sleeve 311 is sealed and clamped with the clamping piece 316, and the sealing sleeve 311 remains stationary under the action of the anti-slip boss 315 and the spring 314, and will not apply any force to the transmission shaft 45, thereby ensuring the position stability of the transmission shaft 45.

[0041] When the actuator shield 41 is installed at the end of the actuator body 31, the abutment ring 411 pushes the sealing sleeve 311 to overcome the elastic force of the spring 314, so that the spring 314 is further compressed until the elastic force of the spring 314 is equal to the thrust of the abutment ring 411 on the sealing sleeve 311, or until the sealing sleeve 311 touches the limiting component inside the main shell, and the sealing sleeve 311 stops sliding. In this application, the clamping member 316 is a component surrounding the transmission shaft 45, and the sealing sleeve 311 is also a part surrounding the transmission shaft 45. The clamping member 316 is a structure protruding relative to the position of the main shell relative to the transmission shaft 45. When the sealing sleeve 311 and the clamping member 316 are misaligned, the sealing sleeve 311 is located at the position of the transmission shaft 45 other than the clamping member 316. At this time, each position of the transmission shaft 45 maintains a certain gap between the main shell and the sealing sleeve 311 to ensure that the transmission shaft 45 can rotate smoothly.

[0042] In order to ensure the sealing effect, the present application is provided with a first sealing ring 312 on the side of the sealing sleeve 311 close to the transmission shaft 45, and a second sealing ring on the side of the sealing sleeve 311 close to the main body shell. The sealing sleeve 311 is an annular structure surrounding the inside of the main body shell, and coincides with the axis of the installation body. When the sealing sleeve 311 abuts against the clamping member 316, it is necessary to ensure the sealing between the sealing sleeve 311 and the main body shell and the sealing between the sealing sleeve 311 and the transmission shaft 45, so as to ensure that the disinfectant is completely shielded from the outside of the actuator body 31 during sterilization. When the sealing sleeve 311 contacts the clamping member 316, the first sealing ring 312 just abuts against the clamping member 316. At the same time, the second sealing ring on the outside of the sealing sleeve 311 always abuts against the main body shell.

[0043] In the present application, a driving motor 44 is provided in the main housing, and the output end of the driving motor 44 is connected to the transmission shaft 45. Specifically, the output end of the driving motor 44 is connected to the top end of the transmission shaft 45, and the top end of the transmission shaft 45 is fixed to the output shaft of the driving motor 44, and the driving motor 44 is used to drive the transmission shaft 45 to rotate.

[0044] The bottom end of the transmission shaft 45 is provided with a snap-in groove, and the actuator shield 41 is provided with a transmission gear assembly 46 and a cutter 47 inside. The end of the transmission gear assembly 46 is provided with a positioning column adapted to the snap-in groove. When the actuator shield 41 is installed at the end of the actuator body 31, the positioning column in the transmission gear assembly 46 is adapted to connect with the snap-in groove in the transmission shaft 45, so that the transmission shaft 45 is fixedly connected to one end of the transmission gear assembly 46, and the other end of the transmission gear assembly 46 is fixedly connected to the cutter 47. When the drive motor 44 drives the transmission shaft 45 to rotate, the transmission shaft 45 drives the cutter 47 to rotate synchronously through the transmission gear assembly 46.

[0045] In the present application, the transmission shaft 45 is statically sealed, and the working principle of dynamic separation is as follows: in the present application, the spring 314 is always in a compressed state. When the abutment ring 411 is away from the sealing sleeve 311, the elastic force of the spring 314 on the sealing sleeve 311 causes the sealing sleeve 311 to slide to a position abutting against the anti-slip boss 315. At this time, the sealing sleeve 311 is located exactly on the outer peripheral side of the clamping part 316. At the same time, the first sealing ring 312 abuts against the clamping part 316, and the second sealing ring abuts against the main shell, thereby realizing a 360° seal on the inner and outer sides of the sealing sleeve 311.

[0046] When the actuator shield 41 is installed at the end of the actuator body 31, the abutment ring 411 pushes the sealing sleeve 311 to overcome the elastic force of the spring 314, so that the spring 314 is further compressed until the elastic force of the spring 314 is equal to the thrust of the abutment ring 411 on the sealing sleeve 311, or until the sealing sleeve 311 touches the limiting component inside the main shell, and the sealing sleeve 311 stops sliding. In this application, the clamping member 316 is a component surrounding the transmission shaft 45, and the sealing sleeve 311 is also a part surrounding the transmission shaft 45. The clamping member 316 is a structure protruding relative to the position of the main shell relative to the transmission shaft 45. When the sealing sleeve 311 and the clamping member 316 are misaligned, the sealing sleeve 311 is located at the position of the transmission shaft 45 other than the clamping member 316. At this time, each position of the transmission shaft 45 maintains a certain gap between the main shell and the sealing sleeve 311 to ensure that the transmission shaft 45 can rotate smoothly.

[0047] Furthermore, in the present application, the actuator protective cover 41 is an L-shaped structure; the L-shaped structure refers to the actuator protective cover 41 including a corner structure. Specifically, the actuator protective cover 41 includes a connecting corner 412, a connecting cover 413 and a connecting nut 414, the connecting corner 412 is an L-shaped structure, that is, a corner structure, the connecting cover 413 covers the side of the connecting corner 412 close to the actuator body 31, and the connecting nut 414 is located between the connecting cover 413 and the connecting corner 412, and is used to limit the connecting cover 413 and the connecting corner 412 in the axial direction.

[0048] The corner-shaped actuator protective cover 41 in the present application is provided with a connecting component 416 connected to the actuator body 31 on the side close to the actuator body 31. The connecting component 416 needs to be integrated in the actuator protective cover 41. In order to integrate the connecting component 416 in the actuator protective cover 41, the present application adopts a connecting cover 413 to fix the connecting corner 412 and the connecting component 416, and then adopts a connecting nut 414 to fix the connecting corners 412 and the connecting corners 412.

[0049] Specifically, a first fixing groove 415 is provided on the outer side of the connecting corner 412 in the present application, and a second fixing groove is provided on the inner side of the connecting cover 413. In a direction perpendicular to the axial center line of the actuator protective cover 41, the first fixing groove 415 and the second fixing groove overlap; the overlap here can be a complete overlap or a partial overlap. When the connecting cover 413 is sleeved on the connecting corner 412, the first fixing groove 415 and the second fixing groove overlap in a direction perpendicular to the axial centerline of the actuator protective cover 41, and the connecting nut 414 is installed inside the first fixing groove 415 and the second fixing groove, wherein the dimension of the connecting nut 414 in a direction perpendicular to the axial centerline of the actuator protective cover 41 is greater than the depth of the first fixing groove 415 and the second fixing groove, and when the connecting nut 414 is installed in the first fixing groove 415 and the second fixing groove, the side of the connecting nut 414 close to the corner is simultaneously in contact with the side walls of the first fixing groove and the second fixing groove, so that the connecting nut 414 will simultaneously form a limit on the connecting corner and the connecting cover 413 in the axial centerline direction.

[0050] In order to further limit the connection cover 413 in the circumferential direction, the inner side wall of the connection cover 413 of the present application is provided with a positioning pin, and the connection corner 412 is provided with a positioning groove, the size of the positioning groove is adapted to the positioning pin, and the positioning groove extends to the end of the connection corner along the axial direction of the actuator protective cover 41. The positioning groove is provided in the form of a notch to facilitate the positioning pin to slide along the positioning groove to the position where the connection cover 413 and the connection corner are assembled. In the present application, the positioning groove and the positioning pin are used to limit the connection corner and the connection cover 413 in the circumferential direction. At the same time, the connection nut 414 forms a limit on the connection corner and the connection cover 413 in the axial direction, so as to ensure that the position between the connection cover 413 and the connection corner is relatively fixed.

[0051] At the same time, a groove for positioning the connection component 416 is provided at one end of the connection cover 413 away from the corner, so that the connection component 416 can be fixed at the corner position of the actuator protective cover 41 .

[0052] The angle locking structure in the present application can not only meet the operational requirements of the surgical actuator, but also ensure the operational stability of the angle locking.

[0053] It can be understood that the above embodiments only express the preferred implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should belong to the scope covered by the claims of the present invention.

Claims

1. A sealing connection structure of a transmission shaft in a surgical actuator, characterized in that: It comprises an actuator body and an actuator protective cover, wherein the actuator protective cover is sleeved on the end of the actuator body; The actuator body includes a main body shell and a transmission shaft located at the axis of the main body shell; the inner side wall of the main body shell is provided with a sliding sealing sleeve, and the outer peripheral side of the transmission shaft is provided with a clamping piece; When the actuator protective cover is sleeved on the end of the actuator body, the sealing sleeve and the clamping piece are misaligned; when the actuator protective cover is separated from the end of the actuator body, the sealing sleeve and the clamping piece are in contact.

2. The sealing connection structure of the transmission shaft in the surgical actuator according to claim 1, characterized in that: The top end of the transmission shaft is fixed inside the actuator body, and the sealing sleeve is located on a side of the clamping member close to the top end of the transmission shaft.

3. The sealing connection structure of the transmission shaft in the surgical actuator according to claim 2, characterized in that: A spring is arranged at one end of the sealing sleeve away from the clamping piece, one end of the spring is fixedly connected to the main shell, and the other end of the spring abuts against the sealing sleeve.

4. The sealing connection structure of the transmission shaft in the surgical actuator according to claim 3, characterized in that: An abutment ring is provided in the actuator protective cover. When the actuator protective cover is installed on the end of the actuator body, the abutment ring pushes the sealing sleeve to overcome the spring force and move in the direction away from the clamping part; when the actuator protective cover is separated from the actuator body, the sealing sleeve slides to the abutment position with the clamping part under the elastic force of the spring.

5. The sealing connection structure of the transmission shaft in the surgical actuator according to claim 3, characterized in that: An anti-slip boss is arranged inside the main body shell, and the anti-slip boss is located on a side of the sealing sleeve away from the spring.

6. The sealing connection structure of the transmission shaft in the surgical actuator according to claim 1, characterized in that: The actuator protective cover is an L-shaped structure; the actuator protective cover includes a connecting corner, a connecting cover and a connecting nut. The connecting corner is an L-shaped structure. The connecting cover covers the side of the connecting corner close to the actuator body. The connecting nut is located between the connecting cover and the connecting corner and is used to limit the connecting cover and the connecting corner in the axial direction.

7. The sealing connection structure of the transmission shaft in the surgical actuator according to claim 6, characterized in that: A first fixing groove is disposed on the outer side of the connecting corner, and a second fixing groove is disposed on the inner side of the connecting cover. The first fixing groove and the second fixing groove overlap in a direction perpendicular to the axis of the actuator protective cover.

8. The sealing connection structure of the transmission shaft in the surgical actuator according to claim 6, characterized in that: The inner side wall of the connection cover is provided with a positioning pin, and the connection corner is provided with a positioning groove.

9. The sealing connection structure of the transmission shaft in the surgical actuator according to claim 1, characterized in that: A driving motor is arranged in the main body shell, and the output end of the driving motor is connected to the transmission shaft; a transmission gear assembly and a tool are arranged inside the actuator protective cover; when the actuator protective cover is installed in the actuator body, the transmission shaft is fixedly connected to one end of the transmission gear assembly, and the other end of the transmission gear assembly is fixedly connected to the tool.

10. A drill grinding machine, characterized in that: A sealed connection structure for a transmission shaft in a surgical actuator comprising the structure described in any one of claims 1 to 9.

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