Drive module, treatment handpiece and treatment device

Abstract

This utility model discloses a drive module, a therapeutic handpiece, and a therapeutic instrument, relating to the field of drive equipment technology. The drive module includes a module housing, a transmission assembly, and a motor. The module housing has a first opening. The transmission assembly includes a first transmission block and a second transmission block, both fixedly installed within the module housing and forming a movable cavity. The motor is installed within the movable cavity, with a drive component at one end. The outer wall of the drive component has an external thread, and the inner wall of the movable cavity has an internal thread, with the external and internal threads meshing. The motor drives the drive component to rotate, causing the motor and drive component to move axially within the movable cavity, thereby moving the workpiece at the first opening. The technical solution provided by this utility model reduces the size of the drive module, thereby further reducing the size of the therapeutic handpiece.

Description

Technical Field

[0001] This utility model relates to the field of drive equipment technology, and in particular to a drive module, a treatment handpiece, and a treatment device. Background Technology

[0002] In fields such as precision instruments, medical hand tools, and automated equipment, high-precision linear motor modules are core functional components for achieving precise positioning and driving. The traditional configuration of such modules typically includes: a motor as the power source, a T-shaped lead screw that converts rotary motion into linear motion, a pair of linear guides or rails that provide guidance and support, and a base that supports all the above components.

[0003] In terms of spatial volume, the structural layout of traditional modules has inherent bottlenecks. Lead, the distance the nut moves in one revolution of the lead screw, is the most crucial factor determining the overall axial length of the module. To achieve a specific stroke, a smaller lead results in an excessively long axial dimension; while increasing the lead shortens the axial length, it increases the radial dimension, creating a fundamental contradiction in space-constrained applications. Secondly, the motor itself, as an independent rigid component, occupies a significant volume due to its inherent dimensions, becoming a secondary but crucial factor restricting module miniaturization. Particularly, in handheld devices such as minimally invasive surgical instruments and precision probes, the space requirements for embedded sliding modules are extremely stringent. The relatively large size of existing motor modules has become a major technical obstacle hindering the development of handheld devices towards smaller and lighter designs. Utility Model Content

[0004] The main purpose of this invention is to propose a drive module, a treatment handpiece, and a treatment device, aiming to reduce the size of the drive module, thereby further reducing the size of the treatment handpiece.

[0005] To achieve the above objectives, this utility model proposes a drive module, the drive module comprising: The module housing has a first opening; A transmission assembly, comprising a first transmission block and a second transmission block, both fixedly mounted within the module housing and forming a movable cavity; and The motor is installed inside the movable cavity. One end of the motor is provided with a driving component. The outer side wall of the driving component is provided with an external thread, and the inner side wall of the movable cavity is provided with an internal thread. The external thread and the internal thread are engaged and connected. The motor drives the drive component to rotate, so that the motor and the drive component move axially within the moving cavity, thereby causing the motor to move the workpiece at the first opening.

[0006] In one embodiment, the first transmission block and the second transmission block are arranged left and right in the module housing and enclose the moving cavity; and the first transmission block and the second transmission block form a second opening communicating with the moving cavity at intervals, the second opening being disposed opposite to the first opening.

[0007] In one embodiment, the height of the first transmission block is greater than the height of the second transmission block, the first transmission block is fixed inside the module housing, and the second transmission block is movably connected inside the module housing; The drive module also includes screws and elastic elements. One end of the module housing is provided with a through hole, and the second transmission block is provided with a countersunk hole corresponding to the position of the through hole. The countersunk hole is coaxially arranged with the through hole. The elastic element is placed in the through hole and the countersunk hole, and the screw is used to screw into the through hole and abut against the elastic element so that the elastic element adjusts the height of the second transmission block in the module housing.

[0008] In one embodiment, the drive module further includes a mounting member connected to the end of the motor away from the drive member. The mounting member passes through the second opening and the first opening in sequence and is used to connect with the workpiece so that the motor drives the workpiece to move up and down.

[0009] In one embodiment, the first transmission block and the second transmission block are provided with guide grooves that communicate with the moving cavity; The mounting component includes: A first mounting bearing is located at the end of the motor away from the drive member; Mounting plate, the mounting plate being connected to the outer wall of the first mounting bearing; and A guide component is connected to the mounting plate, extends from the guide groove, and is slidably connected to the module housing.

[0010] In one embodiment, the guiding component includes a guide cylinder and a bushing, the guide cylinder being connected to the mounting plate and the bushing being installed inside the guide cylinder; the module housing is provided with a guide rod, the guide rod passing through the bushing.

[0011] In one embodiment, the mounting plate includes a plate body and a mounting block integrally formed with the plate body. The mounting block is provided with mounting holes for detachable connection with a workpiece.

[0012] In one embodiment, the driving element includes: A second mounting bearing is connected to one end of the motor; and A transmission cylinder is connected to the outer wall of the second mounting bearing; and the outer wall of the transmission cylinder is provided with the external thread so that the transmission cylinder is connected to the moving cavity in a driving manner.

[0013] In one embodiment, the workpiece is a lens.

[0014] This utility model also proposes a therapeutic hand tool, the therapeutic hand tool comprising: A handpiece housing having a treatment port; Hand therapy component, the hand therapy component being located within the hand housing; and As described above, the drive module is installed inside the handpiece housing and connected to the handpiece treatment component, for driving the handpiece treatment component to extend and retract from the treatment port.

[0015] This utility model also proposes a therapeutic device, including a main unit and the aforementioned therapeutic handpiece.

[0016] This invention's drive module integrates the motor directly into the movable cavity formed by the first and second transmission blocks. Axial movement of the motor and drive component is achieved through the meshing connection between the drive component and the sidewall of the movable cavity. This results in a highly integrated and compact transmission structure, effectively reducing the external dimensions and internal space occupied by the module housing. This integrated design avoids the additional transmission components commonly found in traditional drive modules, thus significantly reducing the overall size of the drive module while ensuring stable drive function. Consequently, the size of the treatment hand using this drive module can be further reduced, making it easier for clinical operation and portability. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the drive module provided by this utility model from one perspective; Figure 2 A longitudinal sectional view of the drive module provided by this utility model; Figure 3 Another structural schematic diagram of the drive module provided by this utility model; Figure 4 A schematic diagram of the structure of the first transmission block and the second transmission block of the drive module provided by this utility model.

[0019] Explanation of icon numbers: 10. Module housing; 10a. First opening; 10b. Through hole; 11. Guide rod; 20. Transmission assembly; 21. First transmission block; 22. Second transmission block; 22a. Countersunk hole; 20a. Moving cavity; 20b. Guide groove; 30. Motor; 31. Drive component; 311. Second mounting bearing; 312. Transmission cylinder; 40. Screw; 50. Elastic component; 60. Mounting component; 61. First mounting bearing; 62. Mounting plate; 621. Plate body; 622. Mounting block; 63. Guide component; 631. Guide cylinder; 632. Bushing; 1. Workpiece.

[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] It should be noted that if the embodiments of this utility model involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0023] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0024] In existing technologies, high-precision linear drive modules in the fields of precision instruments and medical hand tools generally suffer from a space-volume conflict. Traditional structures rely on independent motors and lead screw transmission systems, where the lead parameter directly affects the balance between axial length and radial dimensions. When the internal space of medical hand tools is limited, the rigidity and volume of the independent motor and the layout of the lead screw system make it difficult to miniaturize the overall module, thus hindering the development of lightweight handheld devices. For example, in minimally invasive surgical instruments, the axial length and radial space occupied by traditional modules are insufficient to meet the installation requirements within narrow cavities.

[0025] To resolve the above issues, please refer to Figures 1 to 4 This application proposes a drive module including a module housing 10, a transmission assembly 20, and a motor 30. The module housing 10 has a first opening 10a. The transmission assembly 20 includes a first transmission block 21 and a second transmission block 22 fixedly installed, which together form a moving cavity 20a with internal threads. The motor 30 is installed in the moving cavity 20a, and one end of the motor is provided with a drive member 31 with external threads. The axial movement of the motor 30 within the moving cavity 20a is achieved through thread engagement, thereby driving the workpiece 1 to move at the first opening 10a.

[0026] In this embodiment, the module housing 10 refers to a rigid shell that supports the transmission assembly 20 and the motor 30. The first opening 10a serves as a channel for the movement of the workpiece 1, and can be located, for example, on the top or side wall of the module housing 10. The transmission assembly 20 includes a first transmission block 21 and a second transmission block 22, which are fixed together by connecting components to form a closed moving cavity 20a. The internal thread of the moving cavity 20a is directly machined into the inner walls of the first transmission block 21 and the second transmission block 22, for example, by precision milling or injection molding. The external thread of the drive member 31 forms a helical pair with the internal thread of the moving cavity 20a, for example, by using a trapezoidal thread or a ball thread structure. When the motor 30 rotates, the drive member 31 engages with the thread of the moving cavity 20a, generating axial displacement, causing the entire motor 30 to move axially along the moving cavity 20a.

[0027] Specifically, after the motor 30 starts, it drives the drive component 31 to rotate. The external thread of the drive component 31 interacts with the internal thread of the inner wall of the moving cavity 20a, converting the rotational motion of the drive component 31 into axial linear motion within the moving cavity 20a. The motor 30 and the workpiece 1 are connected together, so the axial displacement of the motor 30 and the drive component 31 within the moving cavity 20a causes the workpiece 1 to move synchronously along the axial direction. The first opening 10a provides a movement path for the workpiece 1, and the moving cavity 20a formed by the first transmission block 21 and the second transmission block 22 simultaneously serves as a guide and support. This combination structure of the transmission component 20 and the motor 30 eliminates the need for additional lead screws and slide rails. The movement trajectory of the motor 30 itself is precisely controlled by the thread engagement, significantly reducing space occupation.

[0028] The internal thread of the moving cavity 20a directly replaces the traditional lead screw structure. The first transmission block 21 and the second transmission block 22 simultaneously undertake the functions of support and guidance, reducing the number of independent parts. The self-driving characteristic of the thread engagement allows the motor 30 to dynamically adjust its position within the moving cavity 20a, achieving precise positioning within a compact space.

[0029] Through the above technical solutions, this application effectively reduces the overall size of the drive module, making it particularly suitable for space-constrained scenarios such as medical hand tools. The integrated design reduces the mutual constraints between axial and radial dimensions, and the self-driving characteristics of the threaded drive improve motion stability. The direct engagement between the motor 30 and the moving cavity 20a reduces assembly errors and helps improve the positioning accuracy of the workpiece 1.

[0030] Please see Figure 2 and Figure 4 This application further proposes that: the first transmission block 21 and the second transmission block 22 are arranged left and right in the module housing 10 and enclose a moving cavity 20a, and the two are spaced apart to form a second opening communicating with the moving cavity 20a, and the second opening is arranged opposite to the first opening 10a.

[0031] In this embodiment, the left-right arrangement refers to a symmetrical distribution along the transverse axis of the module housing 10. Specifically, it can be achieved through parallel or staggered arrangements. For example, the sidewalls of the first transmission block 21 and the second transmission block 22 are parallel and spaced a certain distance apart. The moving cavity 20a refers to the hollow area enclosed by the inner sidewalls of the first transmission block 21 and the second transmission block 22. This can be achieved by adjusting the shape and spacing of the first transmission block 21 and the second transmission block 22. For example, the cross-sections of the first transmission block 21 and the second transmission block 22 can be semi-circular or rectangular, forming a cylindrical or square accommodating space after they are joined. The second opening refers to the gap area between the first transmission block 21 and the second transmission block 22. This can be formed by controlling the installation position of the transmission blocks. For example, a channel of predetermined width can be reserved at the top or bottom of the first transmission block 21 and the second transmission block 22.

[0032] Specifically, the first transmission block 21 and the second transmission block 22 are symmetrically installed along the transverse axis of the module housing 10. Their inner sidewalls form a moving cavity 20a with internal threads, and the motor 30 and the drive component 31 are completely enclosed within the moving cavity 20a. The gap between the first transmission block 21 and the second transmission block 22 forms a second opening penetrating the axial direction of the module housing 10, which is coaxially aligned with the first opening 10a. When the motor 30 moves axially within the moving cavity 20a, the mounting component 60 connected to the motor 30 can pass through the second opening and the first opening 10a, directly driving the external workpiece 1 to perform linear motion. Through this left-right arrangement, the radial dimension of the moving cavity 20a is compressed, and the axial length of the module housing 10 does not need to increase due to lead adjustment, thus optimizing overall space utilization.

[0033] This design uses a first transmission block 21 and a second transmission block 22 arranged on the left and right sides to completely embed the motor 30 inside the moving cavity 20a, eliminating the extra space occupied by an externally mounted motor 30. At the same time, the coaxial through-type design of the second opening and the first opening 10a allows the power transmission path to extend directly along the axial direction, avoiding the radial dimension expansion caused by multi-stage transmission in traditional structures.

[0034] In another embodiment, the first transmission block 21 and the second transmission block 22 are arranged vertically within the module housing 10. The first transmission block 21 has a first cavity and a first opening communicating with the first cavity, and the second transmission block 22 has a second cavity and a second opening communicating with the second cavity. The first cavity and the second cavity are coaxially arranged and enclose each other to form the movable cavity 20a. The first opening and the second opening are coaxial and communicate with each other to form the second opening.

[0035] Please see Figures 2 to 4 This application further proposes that: the height of the first transmission block 21 is greater than that of the second transmission block 22; the first transmission block 21 is fixed inside the module housing 10; and the second transmission block 22 is movably connected inside the module housing 10. The drive module also includes a screw 40 and an elastic element 50. One end of the module housing 10 is provided with a through hole 10b, and the second transmission block 22 is provided with a countersunk hole 22a corresponding to the position of the through hole 10b. The countersunk hole 22a is coaxially arranged with the through hole 10b. The elastic element 50 is placed in the through hole 10b and the countersunk hole 22a. The screw 40 is screwed into the through hole 10b and abuts against the elastic element 50 to adjust the height of the second transmission block 22.

[0036] The elastic element 50 refers to a mechanical component that provides elastic support, specifically a spring or elastic rubber pad. Its function is to generate a reaction force through compression deformation, providing a recoverable displacement space for the height adjustment of the second transmission block 22. The countersunk hole 22a is a stepped hole on the surface of the second transmission block 22, specifically formed by machining. Its function is to cooperate with the through hole 10b to form a cavity to accommodate the elastic element 50, ensuring that the pressure applied by the screw 40 is evenly transmitted to the elastic element 50. The coaxial arrangement of the through hole 10b and the countersunk hole 22a means that their axes coincide, specifically achieved through precision positioning machining. Its function is to ensure the alignment of the screw 40 and the elastic element 50, preventing off-center loading during adjustment that could cause the transmission block to jam.

[0037] During the adjustment process, screwing in screw 40 pushes the second transmission block 22 forward (i.e., downward), causing it to overcome the resistance of the elastic element 50 and produce a slight forward displacement. When screw 40 retracts, the restoring force of the elastic element 50 drives the second transmission block 22 to reset. This push and retraction creates a precise axial misalignment between the fixed first transmission block 21 and the movable second transmission block 22. This misalignment directly translates into a phase difference between the threads driven by the two, equivalent to the outward and return strokes being driven by half of different threads, thus achieving fine-tuning of transmission accuracy. By precisely controlling the screw depth of screw 40, this misalignment can be controlled, ultimately bringing the fit tolerance of the threaded pair close to zero and eliminating stalling.

[0038] This solution, through the combination of the adjustable second transmission block 22 and the elastic element 50, enables the radial dimension of the moving cavity 20a to dynamically adapt. This not only effectively avoids space waste caused by excessive assembly clearance but also overcomes the limitations of traditional rigid structures in compensating for the dimensional tolerances of the motor 30. Even if long-term operation leads to thread wear, the misalignment of the transmission block can still be finely adjusted through the cooperation of the screw 40 and the elastic element 50, restoring the precise fit of the threaded pair and ensuring continuous high-precision, stall-free operation of the motor 30.

[0039] Optionally, the head of the screw 40 is engraved with fine graduations, and fixed indicator marks are provided on the module housing 10, forming a graduation indication system. Operators can make precise adjustments according to the correspondence between graduation values ​​and accuracy.

[0040] Optionally, an anti-loosening nut can be added to screw 40 and tightened after adjustment to prevent the screw from loosening due to vibration.

[0041] Optionally, a mechanical limit post is provided inside the module housing 10 to limit the maximum displacement stroke of the second transmission block 22 and provide overload protection.

[0042] Please see Figure 2 and Figure 3 This application further proposes that the drive module also includes a mounting member 60 connected to the end of the motor 30 away from the drive member 31. The mounting member 60 passes through the second opening and the first opening 10a in sequence and is used to cooperate with the workpiece 1 so that the motor 30 drives the workpiece 1 to rise and fall.

[0043] In this embodiment, the mounting component 60 refers to the connecting part that connects the output end of the motor 30 to the workpiece 1. Specifically, it can be implemented using a combination structure of bearing and rigid plate. By transmitting the linear motion of the motor 30 to the workpiece 1, the lifting function is achieved. The guide groove 20b refers to the groove structure formed on the side wall of the first transmission block 21 and the side wall of the second transmission block 22. Specifically, it can be implemented using a U-shaped groove or a T-shaped groove. It is used to limit the movement trajectory of the mounting component 60 and prevent radial deviation.

[0044] Specifically, after the motor 30 starts, the drive component 31 rotates, and the external thread engages with the internal thread of the moving cavity 20a, generating axial displacement, which drives the entire motor 30 to move axially within the moving cavity 20a. The mounting component 60 is connected to the end of the motor 30 via the first mounting bearing 61, and its guide component 63 slides within the guide groove 20b, causing the mounting plate 62 to move along a preset path. The workpiece 1 is fixed on the mounting block 622 and moves synchronously with the mounting component 60, achieving lifting and lowering through the second opening and the first opening 10a. Because the second opening and the first opening 10a are aligned, the movement path of the mounting component 60 is restricted to a straight line, avoiding transmission errors caused by radial offset.

[0045] This design integrates the guiding function into the side wall of the moving cavity 20a by using the second opening formed by the first transmission block 21 and the second transmission block 22 to cooperate with the guide groove 20b, thus eliminating the space occupied by additional guiding structures. At the same time, the mounting component 60 directly penetrates the openings at both ends of the module housing 10, making the movement path of the workpiece 1 coincide with the axis of the motor 30, reducing the length of the transmission chain and lowering the structural complexity.

[0046] This application integrates the guide structure and power transmission path inside the module housing 10 while ensuring the accuracy of linear transmission, effectively reducing the overall size of the drive module. The alignment design of the mounting part 60 with the first opening 10a and the second opening allows the lifting movement of the workpiece 1 to proceed without external guidance, making it particularly suitable for precision equipment with limited internal space, such as treatment tools, and meeting the requirements for miniaturization.

[0047] Please see Figure 2 and Figure 3 This application further proposes that the mounting component 60 includes a first mounting bearing 61, a mounting plate 62 and a guide component 63. The first mounting bearing 61 is located at the end of the motor 30 away from the drive component 31. The mounting plate 62 is connected to the outer wall of the first mounting bearing 61. The guide component 63 is connected to the mounting plate 62 and extends out from the guide groove 20b, and is slidably connected to the module housing 10.

[0048] In this embodiment, the first mounting bearing 61 refers to a rolling bearing used to connect the output shaft of the motor 30 and the mounting plate 62. Specifically, it can be a deep groove ball bearing or an angular contact bearing. Its function is to convert the rotational motion of the motor 30 into linear motion. The mounting plate 62 refers to a metal plate that supports the guide component 63 and transmits power. Specifically, it can be made of aluminum alloy or stamped steel plate. Its function is to evenly transmit the driving force of the motor 30 to the guide component 63. The guide component 63 refers to a sliding mechanism that cooperates with the guide groove 20b. Its function is to improve the stability of axial movement by constraining the movement trajectory of the mounting plate 62.

[0049] Specifically, when the motor 30 drives the drive component 31 to rotate, the meshing action between the external thread of the drive component 31 and the internal thread of the moving cavity 20a causes the entire motor 30 to move axially along the moving cavity 20a. The mounting plate 62 is rigidly connected to the motor 30 through the first mounting bearing 61, driving the guide component 63 to slide along the guide groove 20b. The linear constraint of the guide groove 20b ensures that the mounting plate 62 can only move in a preset direction, avoiding deflection or jamming caused by transmission clearance. The mounting block 622 at the end of the mounting plate 62 passes through the first opening 10a of the module housing 10 and connects to the workpiece 1, thereby realizing the precise lifting and lowering of the workpiece 1 driven by the motor 30 at the opening.

[0050] This design integrates the guide groove 20b into the transmission block structure, and utilizes the sidewall of the moving cavity 20a to directly form a sliding constraint, eliminating the installation space required for the additional guide component 63. The design of embedding the guide component 63 into the guide groove 20b improves the utilization rate of the internal space of the module housing 10, and is especially suitable for the assembly requirements of small cavities such as hand tools.

[0051] Please see Figure 2 and Figure 3 This application further proposes that the guide component 63 includes a guide cylinder 631 and a bushing 632, the guide cylinder 631 is connected to the mounting plate 62, and the bushing 632 is installed inside the guide cylinder 631; the module housing 10 is provided with a guide rod 11, which passes through the bushing 632; or, the guide component 63 is a guide block, which is connected to the mounting plate 62; the module housing 10 is provided with a guide slide rail, and the guide block is slidably connected to the guide slide rail.

[0052] In this embodiment, the guide cylinder 631 refers to a cylindrical component with an axially continuous structure, which can be fabricated from metal tubing, and is used to form a sliding pair with the bushing 632. The bushing 632 refers to an annular sliding component nested within the guide cylinder 631, used to reduce the frictional resistance between the guide rod 11 and the guide cylinder 631. The guide rod 11 refers to a cylindrical rod fixed to the module housing 10, which can be fabricated from stainless steel, and is used to provide a linear motion trajectory for the bushing 632. The guide block refers to a block-shaped component with a sliding contact surface, which can be injection molded from engineering plastic, and is used to form a surface contact sliding pair with the guide rail. The guide rail refers to a track structure with a linear guide groove 20b, which can be fabricated from aluminum alloy profiles, and is used to constrain the movement path of the guide block.

[0053] Specifically, when the guide cylinder 631 and bushing 632 are combined, the guide cylinder 631 is connected to the mounting plate 62 by welding or bolting, and the bushing 632 is pressed into the inner cavity of the guide cylinder 631 by an interference fit. Guide rods 11 are symmetrically arranged on both sides of the module housing 10, and the guide rods 11 pass through the inner hole of the bushing 632 to form a clearance fit. When the motor 30 drives the mounting plate 62 to rise and fall, the bushing 632 slides axially along the guide rods 11, limiting the radial offset of the mounting plate 62. When the guide block and guide rail are combined, the guide block is fixed to the edge of the mounting plate 62 by clips or screws, and the guide rail is bolted to the inner wall of the module housing 10. The bottom of the guide block has a groove matching the cross-sectional shape of the guide rail, allowing it to move smoothly along the length of the rail when the motor 30 is activated.

[0054] In this design, the guide cylinder 631 and the bushing 632 are integrated on the mounting plate 62, and the radial dimension is reduced by axial stacking arrangement; while the guide block is directly integrated into the mounting plate 62, reducing the number of parts.

[0055] Through the above technical solution, this application achieves an integrated design of the guide component 63 and the mounting plate 62, effectively compressing the radial dimension of the module while ensuring motion accuracy. Two guiding schemes can be flexibly selected according to different spatial constraints: the guide cylinder 631 structure is suitable for high-precision scenarios, while the guide block is suitable for compact scenarios; both can meet the stable linear drive requirements in confined spaces such as medical hand tools.

[0056] Please see Figure 2 and Figure 3 This application further proposes that the mounting plate 62 includes a plate body 621 and a mounting block 622 integrally formed with the plate body 621. The mounting block 622 is provided with mounting holes for detachable connection with the workpiece 1.

[0057] In this embodiment, the integral molding setting refers to the plate 621 and the mounting block 622 forming an integral structure through casting or injection molding processes. Specifically, it can be achieved by die casting of aluminum alloy or injection molding of engineering plastics. The mounting hole refers to the through hole 10b structure provided on the mounting block 622. Specifically, it can be achieved by threaded hole, pin hole or snap-fit ​​structure. For example, threads are provided on the inner wall of the mounting hole to adapt to the connecting bolt of the workpiece 1.

[0058] Specifically, the plate 621, as the main body of the mounting plate 62, forms a seamless integral structure with the mounting block 622 through an integrated molding process. The mounting block 622 extends from the end of the plate 621, and its mounting hole axis is perpendicular to the plane of the plate 621. When the workpiece 1 is connected to the mounting hole by bolts or clips, the load borne by the plate 621 is transferred to the mounting block 622 through continuous material, avoiding stress concentration caused by traditional welding or bolt connections. The removable feature of the mounting hole allows the workpiece 1 to be quickly separated during maintenance without disassembling the entire drive module.

[0059] Please see Figure 2 This application further proposes that the drive component 31 includes a second mounting bearing 311 and a transmission cylinder 312. The second mounting bearing 311 is connected to one end of the motor 30, and the transmission cylinder 312 is connected to the outer wall of the second mounting bearing 311. The outer wall of the transmission cylinder 312 is provided with an external thread, and the inner side wall of the moving cavity 20a is provided with an internal thread, so that the transmission cylinder 312 is connected to the moving cavity 20a in a transmission manner.

[0060] In this embodiment, the second mounting bearing 311 is a component used to realize the rotational connection between the transmission cylinder 312 and the motor 30. Specifically, it can be implemented using a deep groove ball bearing or an angular contact bearing. Its inner ring is interference-fitted with the output shaft of the motor 30, and its outer ring is welded and fixed to the transmission cylinder 312. The transmission cylinder 312 is a tubular transmission component with an external thread structure. Specifically, it can be made of stainless steel or aluminum alloy material and machined by a CNC lathe. The conversion of rotary motion to linear motion is realized by the engagement of the external thread with the internal thread of the inner wall of the moving cavity 20a.

[0061] Specifically, when the motor 30 starts, its output shaft drives the inner ring of the second mounting bearing 311 to rotate. Since the transmission cylinder 312 is fixed to the outer ring of the bearing, it rotates within the moving cavity 20a. The internal thread of the side wall of the moving cavity 20a and the external thread of the transmission cylinder 312 form a helical pair, forcing the transmission cylinder 312 to move axially along the moving cavity 20a during rotation. This structure integrates the nut function of a traditional lead screw and nut pair into the side wall of the moving cavity 20a. The transmission cylinder 312 simultaneously performs the dual functions of the lead screw and the transmission shaft, thereby reducing the space required for a separate nut component.

[0062] This solution eliminates the installation space requirement of traditional nut components by directly setting the threaded engagement structure between the outer wall of the transmission cylinder 312 and the inner wall of the moving cavity 20a, thus shortening the overall axial length of the drive component 31. Simultaneously, the direct connection between the transmission cylinder 312 and the second mounting bearing 311 avoids the use of traditional couplings, further reducing radial space occupation.

[0063] Through the above technical solution, this application effectively solves the problem of excessive axial and radial space occupation of the drive module, and makes the overall structure of the drive component 31 more compact while maintaining the same transmission accuracy. This design is particularly suitable for devices such as therapeutic hand tools that have strict requirements for internal space, and can integrate the drive module into a smaller installation space without reducing the drive stroke.

[0064] Please see Figure 2 and Figure 3 Furthermore, this application proposes that workpiece 1 is a lens.

[0065] In this context, a lens refers to an optical element used in phototherapy. Specifically, it can be made of glass or resin. Within the treatment handpiece, its focal length or treatment depth is adjusted by axial movement. The precision of the lens's movement directly affects the treatment outcome; therefore, a drive module is required to provide high-precision linear motion.

[0066] Specifically, the drive module drives the drive component 31 to rotate via the motor 30, causing the motor 30 and drive component 31 to move axially within the moving cavity 20a, thereby causing the lens connected to the mounting component 60 to extend and retract at the first opening 10a. The lens is installed in the mounting hole of the mounting component 60 and slides along the guide component 63 under the drive of the motor 30, realizing the position adjustment of the treatment port in the treatment handpiece. The threaded engagement structure within the moving cavity 20a converts the rotation of the motor 30 into linear displacement, and with the constraint of the guide groove 20b and the guide rod 11, ensures the linearity and stability of the lens's movement trajectory.

[0067] In some specific embodiments, the mounting hole size is adapted to the lens edge to achieve detachable fixation. The guide component 63 may be a combination of guide cylinder 631 and bushing 632, or a combination of guide block and slide rail.

[0068] This design often uses a separate linear motor 30 and lens, resulting in overall structural redundancy. This design integrates the motor 30 within the moving cavity 20a, using a threaded drive and guide structure integrated design to significantly reduce axial space occupation while ensuring lens movement accuracy.

[0069] The drive module moves as follows during operation: When the motor 30 starts, its output shaft begins to rotate, driving the drive component 31 (specifically the transmission cylinder 312) fixed at its end to rotate synchronously. Since the external thread on the outer wall of the transmission cylinder 312 is tightly engaged with the internal thread on the side wall of the moving cavity 20a formed by the first transmission block 21 and the second transmission block 22, the threaded pair converts the rotational motion of the drive component 31 into the linear motion of the entire assembly of the motor 30 and the drive component 31, allowing it to move forward or backward within the moving cavity 20a. At the same time, the mounting plate 62, which is connected to the tail of the motor 30 through the first mounting bearing 61, moves synchronously in a linear fashion. The guide component 63 on the mounting plate 62 (whether it is the combination of the guide cylinder 631 and the bushing 632, or the guide block) slides along the guide rod 11 or guide rail fixed on the module housing 10, which plays a role in preventing rotation and ensuring smooth movement. Finally, the mounting block 622 at the front end of the mounting plate 62 drives the workpiece 1 (such as a lens) connected to it to perform precise axial movement, allowing it to extend or retract from the first opening 10a of the module housing 10, thus realizing the lifting function.

[0070] Furthermore, when it is necessary to adjust the transmission clearance, the second transmission block 22 can be adjusted by slightly moving up and down by compressing the elastic element 50 with the screw 40.

[0071] Please see Figure 1 and Figure 2 This utility model also proposes a therapeutic handpiece, which includes a handpiece shell, a therapeutic component, and a drive module. The handpiece shell has a treatment opening; the therapeutic component is located inside the handpiece shell; the drive module is installed inside the handpiece shell and connected to the therapeutic component, for driving the therapeutic component to extend and retract from the treatment opening. The specific structure of the drive module is as described in the above embodiments. Since this therapeutic handpiece adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here.

[0072] In this embodiment, the handpiece housing refers to the shell structure used to house the handpiece therapeutic component and the drive module. Specifically, it can be implemented using a split injection-molded shell or a metal frame structure, with the treatment port configured to allow the therapeutic component to extend or retract. The handpiece therapeutic component refers to the part that performs the treatment function, specifically using a laser emitter, radio frequency electrode, or mechanical probe, which adjusts the treatment depth or position through telescopic movement. The drive module refers to a linear drive device integrating a motor 30, a transmission assembly 20, and a guide structure, which drives the threaded engagement mechanism via the motor 30 to move the therapeutic component axially.

[0073] Specifically, the drive module is fixedly installed inside the handpiece housing, and its mounting component 60 is detachably connected to the handpiece treatment component. When the motor 30 is started, the external thread of the drive component 31 engages with the internal thread of the moving cavity 20a, generating rotational motion. This causes the motor 30 and the drive component 31 to move axially within the moving cavity 20a, thereby driving the mounting component 60 to slide along the guide groove 20b. The displacement of the mounting component 60 is transmitted to the handpiece treatment component through a rigid connection, allowing it to extend and retract at the treatment port. The size of the treatment port matches the shape of the treatment component, ensuring no interference and maintaining a seal during extension and retraction.

[0074] This solution embeds the entire drive module inside the housing, using threaded meshing transmission instead of the traditional lead screw structure, thus eliminating the space-consuming problem of independent guide rails. Simultaneously, the axial movement design of the motor 30 and the moving cavity 20a within the drive module avoids the additional support structure required for the fixed installation of the motor 30 in traditional solutions, further reducing the axial dimensions. In some embodiments, the workpiece is a lens, and the treatment handpiece is a laser treatment handpiece. When the drive module drives the workpiece to move, the position of the lens in the optical path can be adjusted to regulate the size of the light spot at the treatment port.

[0075] Through the above technical solution, this application achieves efficient utilization of the internal space of the treatment handpiece, enabling a compact integration of the drive module and the outer shell structure. The telescopic movement of the treatment component is accomplished through an integrated drive mechanism, reducing the transmission chain length and assembly errors, and improving positioning accuracy. This structure is particularly suitable for portable devices that are sensitive to size, such as minimally invasive surgical instruments, significantly reducing overall weight and external dimensions while maintaining treatment functionality.

[0076] This solution also proposes a therapeutic device, including a main unit and the aforementioned therapeutic handpiece. The main unit contains an energy source that generates therapeutic energy. The energy source emits energy that is guided to the area to be treated through the therapeutic handpiece, thereby achieving treatment. The driving module within the therapeutic handpiece can drive the device to move, adjusting the magnitude, location, depth, and other relevant therapeutic parameters of the energy applied to the area to be treated.

[0077] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A drive module, characterized in that, The drive module includes: The module housing has a first opening; A transmission assembly, comprising a first transmission block and a second transmission block, both fixedly mounted within the module housing and forming a movable cavity; and The motor is installed inside the movable cavity. One end of the motor is provided with a driving component. The outer side wall of the driving component is provided with an external thread, and the inner side wall of the movable cavity is provided with an internal thread. The external thread and the internal thread are engaged and connected. The motor drives the drive component to rotate, so that the motor and the drive component move axially within the moving cavity, thereby causing the motor to move the workpiece at the first opening.

2. The drive module as described in claim 1, characterized in that, The first transmission block and the second transmission block are arranged left and right in the module housing and enclose the moving cavity; and the first transmission block and the second transmission block form a second opening that communicates with the moving cavity at intervals, and the second opening is arranged opposite to the first opening.

3. The drive module as described in claim 2, characterized in that, The height of the first transmission block is greater than the height of the second transmission block. The first transmission block is fixed inside the module housing, and the second transmission block is movably connected inside the module housing. The drive module also includes screws and elastic elements. One end of the module housing is provided with a through hole, and the second transmission block is provided with a countersunk hole corresponding to the position of the through hole. The countersunk hole is coaxially arranged with the through hole. The elastic element is placed in the through hole and the countersunk hole, and the screw is used to screw into the through hole and abut against the elastic element so that the elastic element adjusts the height of the second transmission block in the module housing.

4. The drive module as described in claim 2, characterized in that, The drive module also includes a mounting component connected to the end of the motor away from the drive component. The mounting component passes through the second opening and the first opening in sequence and is used to connect with the workpiece so that the motor drives the workpiece to rise and fall.

5. The drive module as described in claim 4, characterized in that, The first transmission block and the second transmission block are provided with guide grooves that communicate with the moving cavity; The mounting component includes: A first mounting bearing is located at the end of the motor away from the drive member; Mounting plate, the mounting plate being connected to the outer wall of the first mounting bearing; and A guide component is connected to the mounting plate, extends from the guide groove, and is slidably connected to the module housing.

6. The drive module as described in claim 5, characterized in that, The guiding component includes a guide cylinder and a bushing. The guide cylinder is connected to the mounting plate, and the bushing is installed inside the guide cylinder. The module housing is provided with a guide rod, which passes through the bushing.

7. The drive module as described in claim 5, characterized in that, The mounting plate includes a plate body and a mounting block integrally formed with the plate body. The mounting block is provided with mounting holes for detachable connection with the workpiece.

8. The drive module as described in claim 1, characterized in that, The driving component includes: A second mounting bearing is connected to one end of the motor; and A transmission cylinder is connected to the outer wall of the second mounting bearing; and the outer wall of the transmission cylinder is provided with the external thread so that the transmission cylinder is connected to the moving cavity in a driving manner.

9. The drive module as described in claim 1, characterized in that, The workpiece is a lens.

10. A therapeutic hand tool, characterized in that, The treatment handpiece includes: A handpiece housing having a treatment port; Hand therapy component, the hand therapy component being located within the hand housing; and The drive module as described in any one of claims 1 to 9 is installed inside the handpiece housing and connected to the handpiece treatment component, for driving the handpiece treatment component to extend and retract from the treatment port.

11. A therapeutic device, characterized in that, Includes the main unit and the treatment handpiece as described in claim 10.

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