Connecting structure of light guide arm and laser therapeutic instrument

Abstract

The utility model discloses a connecting structure of light guide arm and laser therapeutic instrument, relates to medical instrument technical field, wherein the connecting structure of light guide arm includes base and adapter post, base is equipped with insert end, insert end outer wall is equipped with first taper slope, insert end is also equipped with clamping portion, adapter post is equipped with jack, and the adapter post is equipped with the first taper slope and the clamping portion. A second conical inclined surface is arranged on the inner wall of the insertion hole; wherein the insertion end is inserted into the insertion hole and is clamped with the insertion hole through the clamping part, and the first conical inclined plane and the second conical inclined plane abut against each other for limiting. According to the technical scheme provided by the utility model, the problems that the positioning precision between the existing light guide arm and the host is insufficient, the light path needs to be debugged again during each disassembly and assembly, and the operation is troublesome are solved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a connection structure for a light guide arm and a laser therapy device. Background Technology

[0002] In related technologies, laser therapy devices include a light guide arm. The connection between the light guide arm and the main unit involves inserting a base into an adapter post and then securing the base and adapter post with screws. The adapter post is fixed to the laser on the main unit. The end of the base facing away from the adapter post is used to install other components of the light guide arm (such as the arm tube), thus achieving the installation of the light guide arm. However, with this installation method, the base lacks positioning accuracy or requires adjustment to prevent laser deviation. This results in a deviation in the optical path after each disassembly and reassembly, causing the laser output to deviate after passing through the light guide arm. Each time, the optical path needs to be readjusted, making the operation cumbersome and inefficient. Utility Model Content

[0003] The main purpose of this utility model is to provide a connection structure for a light guide arm and a laser therapy device, which aims to solve the problems of insufficient positioning accuracy between the existing light guide arm and the main unit, the need to readjust the optical path every time it is disassembled and assembled, and the cumbersome operation.

[0004] To achieve the above objectives, this utility model proposes a connection structure for a light guide arm. The connection structure includes: a base, the base having an insertion end, the outer wall of the insertion end having a first conical inclined surface, and the insertion end also having a snap-fit ​​part; and a transition post, the transition post having an insertion hole, the inner wall of the insertion hole having a second conical inclined surface; wherein, the insertion end is inserted into the insertion hole and snapped into the insertion hole by the snap-fit ​​part, and the first conical inclined surface and the second conical inclined surface abut and limit the movement.

[0005] In one embodiment, the circumferential dimension of the first tapered inclined surface gradually decreases from the end away from the snap-fit ​​portion toward the snap-fit ​​portion, and the circumferential dimension of the second tapered inclined surface gradually decreases from the opening of the insertion hole toward the inside of the insertion hole.

[0006] In one embodiment, the inner wall of the socket is further provided with a locking platform, which is located below the second conical inclined surface along the insertion direction. The inner wall of the socket is provided with a sliding groove along the axial direction of the socket, and the sliding groove passes through the first conical inclined surface and the locking platform. The insertion end is inserted into the socket along the sliding groove, so that the base has a first position that can be pulled out along the socket and a second position that can be rotated. In the first position, the insertion end is aligned with the socket. In the second position, the locking part abuts against the locking platform.

[0007] In one embodiment, the insertion hole includes a first hole segment and a second hole segment that are connected to each other, and the connection between the first hole segment and the second hole segment forms the snap-fit ​​platform. The sliding groove and the second conical inclined surface are both provided in the first hole segment.

[0008] In one embodiment, the side wall of the adapter post is further provided with a connecting hole that communicates with the second hole segment, the connecting hole being located between the first hole segment and the second hole segment; the connecting structure of the light guide arm further includes a ball screw, the ball screw being connected to the connecting hole, the ball end of the ball screw extending into the second hole segment; the surface of the snap-fit ​​part is provided with a groove, the ball end of the ball screw abutting against the groove.

[0009] In one embodiment, there are two snap-fit ​​parts, which are symmetrically arranged on the outer wall of the insertion end; there are two sliding grooves, and the snap-fit ​​parts are arranged in a one-to-one correspondence with the sliding grooves; there are two connecting holes, which are symmetrically arranged on the side wall of the adapter post; and there are two ball screws, which are arranged in a one-to-one correspondence with the connecting holes.

[0010] In one embodiment, the end face of the adapter post is recessed with a stepped groove, and the outer wall of the base is provided with a supporting flange, which extends into the stepped groove and abuts against the bottom surface of the stepped groove.

[0011] In one embodiment, the connection structure further includes a pressure cap, which is sleeved on the outside of the base and threaded to the outer wall of the adapter post.

[0012] In one embodiment, the connection structure further includes a sleeve connected to the outside of the adapter post and abutting against the end face of the cap.

[0013] This utility model also proposes a laser therapy device, which includes the connection structure of the light guide arm as described above.

[0014] Compared with the prior art, the light guide arm connection structure and laser therapy device provided by this utility model have the following beneficial effects:

[0015] This utility model's technical solution involves setting a first conical inclined surface on the insertion end of the base and a second conical inclined surface in the insertion hole of the adapter post. The first and second conical inclined surfaces work together to achieve precise positioning. During installation, the insertion end is inserted into the insertion hole, and the first and second conical inclined surfaces come into contact. The guiding effect of the conical inclined surfaces automatically corrects any offset, ensuring that the base and adapter post are automatically aligned. This guarantees the concentricity of the base and adapter post, reduces installation errors, and avoids optical path deviations caused by installation errors. Furthermore, each installation can be positioned using the first and second conical inclined surfaces, improving the consistency and reliability of the installation. There is no need to adjust the optical path, ensuring accurate optical transmission. The operation is simple and convenient, allowing for rapid installation and disassembly with high efficiency. Attached Figure Description

[0016] 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.

[0017] Figure 1 This is an exploded view of an embodiment of the connection structure of the light guide arm of this utility model;

[0018] Figure 2 This is an exploded view of an embodiment of the base and adapter column of this utility model;

[0019] Figure 3 This is a cross-sectional view of one embodiment of the light guide arm connection structure of this utility model in the first position;

[0020] Figure 4 This is an axial sectional view of an embodiment of the connection structure of the light guide arm of this utility model;

[0021] Figure 5 This is a cross-sectional view of an embodiment of the light guide arm connection structure of the present invention in the second position.

[0022] Explanation of icon numbers:

[0023] 100. Connecting structure; 10. Base; 11. Insertion end; 111. First conical bevel; 112. Snap-fit ​​part; 1121. Groove; 12. Supporting flange; 20. Adapter post; 21. Insertion hole; 211. Second conical bevel; 212. Snap-fit ​​platform; 213. Slide groove; 214. First hole section; 215. Second hole section; 22. Connecting hole; 23. Step groove; 30. Ball screw; 31. Steel ball end; 40. Pressure cap; 50. Column sleeve.

[0024] 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

[0025] 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 protection scope of the present utility model.

[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0027] Furthermore, the use of terms such as "first" and "second" in this utility model is 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 as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0028] Please refer to Figures 1 to 5 This utility model proposes a connection structure 100 for a light guide arm, comprising: a base 10, the base 10 having an insertion end 11, the outer wall of the insertion end 11 having a first conical inclined surface 111, and the insertion end 11 also having a snap-fit ​​part 112; and a transition post 20, the transition post 20 having an insertion hole 21, the inner wall of the insertion hole 21 having a second conical inclined surface 211; wherein, the insertion end 11 is inserted into the insertion hole 21 and snapped into the insertion hole 21 by the snap-fit ​​part 112, and the first conical inclined surface 111 and the second conical inclined surface 211 abut and limit the movement.

[0029] Specifically, the connection structure 100 of the light guide arm includes a base 10 and an adapter post 20. The adapter post 20 is used to fix the light guide arm to the laser of the host machine. One end of the base 10 is used to connect to the adapter post 20, and the other end of the base 10 is used to install the arm tube and other components of the light guide arm.

[0030] The specific connection method between the base 10 and the adapter post 20 is as follows: an insertion end 11 is provided on the base 10, and an insertion hole 21 is provided on the adapter post 20. A first conical inclined surface 111 and a snap-fit ​​part 112 are provided on the insertion end 11, and a second conical inclined surface 211 is provided inside the insertion hole 21. The insertion end 11 is inserted into the insertion hole 21 and snapped into the insertion hole 21 by the snap-fit ​​part 112, so that the base 10 is installed on the adapter post 20 and detachably connected to the adapter post 20. At the same time, the first conical inclined surface 111 and the second conical inclined surface 211 abut and limit the movement. The conical inclined surface has a guiding function. When the insertion end 11 gradually enters the insertion hole 21, the conical inclined surface will guide the insertion end 11 to move closer to the central axis of the insertion hole 21. The design of the first conical inclined surface 111 and the second conical inclined surface 211 makes the contact point between the insertion end 11 and the insertion hole 21 gradually move from the edge to the center, ensuring the alignment accuracy. The cone angle of the first conical inclined surface 111 is equal to that of the second conical inclined surface 211, so that after the insertion end 11 is inserted into the insertion hole 21, the contact parts of the two conical inclined surfaces are completely or almost in contact, and the circumferences of both surfaces abut against each other.

[0031] By setting the first conical inclined surface 111 and the second conical inclined surface 211, any initial offset will be gradually corrected during the insertion process, reducing human error, making the base 10 and the adapter post 20 concentric, and preventing optical path offset. During the insertion process, the contact area gradually increases, expanding from the edge to the entire contact surface. The increased contact area also provides more friction and stability, which helps to reduce offset and vibration, and makes the force distribution uniform, which helps to protect the connecting parts, extend the service life, and improve the stability of the connection.

[0032] The snap-fit ​​part 112 can be a flexible snap-fit ​​part, and a slot can be provided on the insertion hole 21 to engage with it; the snap-fit ​​part 112 can also be a protrusion, directly abutting against the inner wall of the insertion hole 21 for secure fastening; the snap-fit ​​part 112 can also be externally threaded, with an internal thread designed to engage within the insertion hole 21; the specific connection method can be selected according to actual needs. By setting the snap-fit ​​part 112 to engage with the insertion hole 21 of the adapter post 20, the base 10 and the adapter post 20 can be tightened together in the insertion direction without the need for screws, shortening the installation time and improving installation efficiency.

[0033] The first conical inclined surface 111 and the second conical inclined surface 211 are inclined in the same direction, and their circumferential dimensions gradually decrease towards the insertion direction.

[0034] This utility model's technical solution involves setting a first conical inclined surface 111 on the insertion end 11 of the base 10 and a second conical inclined surface 211 in the insertion hole 21 of the adapter post 20. The first and second conical inclined surfaces 111 and 211 work together to achieve precise positioning. During installation, the insertion end 11 is inserted into the insertion hole 21, and the first and second conical inclined surfaces 111 come into contact with each other. The guiding effect of the conical inclined surfaces can automatically correct the offset, so that the base 10 and the adapter post 20 are automatically aligned, ensuring the concentricity of the base 10 and the adapter post 20, reducing installation errors, and thus avoiding optical path deviations caused by installation errors. Moreover, each installation can be positioned by the first and second conical inclined surfaces 111 and 211, improving the consistency and reliability of the installation. There is no need to adjust the optical path, ensuring accurate transmission of the optical path. The operation is simple and convenient, and it can achieve rapid installation and disassembly with high efficiency.

[0035] In an embodiment of this utility model, the circumferential dimension of the first tapered inclined surface 111 gradually decreases from the end away from the latching portion 112 toward the latching portion 112, and the circumferential dimension of the second tapered inclined surface 211 gradually decreases from the opening of the insertion hole 21 toward the inside of the insertion hole 21.

[0036] In detail, such as Figure 4 The first conical inclined surface 111 and the second conical inclined surface 211 are inclined in the same direction. That is, the circumferential dimension of the first conical inclined surface 111 gradually decreases from the end away from the locking part 112 toward the locking part 112, and the circumferential dimension of the second conical inclined surface 211 gradually decreases from the opening of the insertion hole 21 toward the inside of the insertion hole 21. This setting can provide a good guiding effect, ensuring that the insertion end 11 naturally tends to be aligned with the center when entering the insertion hole 21. It can make the base 10 and the adapter post 20 concentric during each installation, with high alignment accuracy, thereby avoiding optical path deviation caused by installation errors. During insertion, the gradual reduction of the conical surface can provide smooth guidance, reduce insertion resistance, and make the installation process smoother. After installation, the tight fit of the conical surface can prevent the connection part from loosening during use.

[0037] Furthermore, a first straight surface (not shown) and a second straight surface (not shown) are formed on both sides of the first conical inclined surface 111 on the outer wall of the insertion end 11. The first straight surface is located near the latching part 112, and the second straight surface is located away from the latching part 112. A third straight surface (not shown) and a fourth straight surface (not shown) are formed on the inner wall of the insertion hole 21 on the second conical inclined surface 211. The third straight surface is located away from the opening of the insertion hole 21, and the fourth straight surface is located near the opening of the insertion hole 21. When the insertion end 11 is inserted into the insertion hole 21, the first straight surface and the third straight surface abut and limit each other, and the second straight surface and the fourth straight surface abut and limit each other. The abutment and limiting of the first straight surface and the third straight surface, and the second straight surface and the fourth straight surface, can provide precise alignment in multiple directions and provide stable support in multiple directions.

[0038] In an embodiment of this utility model, the inner wall of the insertion hole 21 is further provided with a locking platform 212. The locking platform 212 is located below the second conical inclined surface 211 along the insertion direction. The inner wall of the insertion hole 21 is provided with a sliding groove 213 along the axial direction of the insertion hole 21. The sliding groove 213 passes through the first conical inclined surface 111 and the locking platform 212. The insertion end 11 is inserted into the insertion hole 21 along the sliding groove 213, so that the base 10 has a first position that can be pulled out along the insertion hole 21 and can rotate to have a first position and a second position. In the first position, the insertion end 11 is aligned with the insertion hole 21. In the second position, the locking part 112 abuts against the locking platform 212.

[0039] It is worth noting that by opening a groove 213 on the inner wall of the socket 21, the groove 213 is opened along the axial direction of the socket 21, passing through the first conical inclined surface 111 and the retaining platform 212. When the insertion end 11 is inserted into the socket 21 along the groove 213, the groove 213 can provide precise guidance, reduce offset, and ensure that the insertion end 11 can be quickly aligned with the center position when entering the socket 21.

[0040] When the base 10 is inserted into the socket 21 along the slide groove 213, it is in the first position, at which point the insertion end 11 is aligned with the socket 21, facilitating insertion and initial alignment. When the base 10 rotates to the second position, the locking part 112 abuts against the locking platform 212, forming a firm lock and ensuring the stability of the connection. The design of the locking platform 212 makes the force on the connection part more even, improving the reliability of the connection.

[0041] When disassembly is required, simply reverse the operation: first rotate the base 10 to the first position, then pull the base 10 out along the slide groove 213. This quick alignment and disassembly design improves the convenience and efficiency of operation, allowing for single-person assembly and disassembly. Furthermore, each disassembly and reassembly ensures precise positioning and concentricity. This design not only improves the reliability of the light guide arm's connection structure 100 but also enhances the user experience.

[0042] In an embodiment of this utility model, the insertion hole 21 includes a first hole segment 214 and a second hole segment 215 that are connected to each other. The connection between the first hole segment 214 and the second hole segment 215 forms the snap-fit ​​platform 212. The sliding groove 213 and the second conical inclined surface 211 are both provided in the first hole segment 214.

[0043] Specifically, such as Figure 4 The diameter of the second hole segment 215 is larger than that of the first hole segment 214, thus forming a retaining platform 212 at the connection between the two, providing a larger accommodating space and ensuring that the insertion end 11 can be stably connected to the adapter post 20 after it is fully inserted into the socket 21. The first hole segment 214 is provided with a sliding groove 213 and a second conical inclined surface 211, providing a clear insertion path and ensuring that the insertion end 11 can be quickly and accurately aligned when entering the socket 21.

[0044] In an embodiment of this utility model, the side wall of the adapter post 20 is further provided with a connecting hole 22 that communicates with the second hole segment 215. The connecting hole 22 is located between the first hole segment 214 and the second hole segment 215. The connecting structure 100 of the light guide arm also includes a ball screw 30, which is connected to the connecting hole 22. The ball end 31 of the ball screw 30 extends into the second hole segment 215. The surface of the snap-fit ​​part 112 is provided with a groove 1121, and the ball end 31 of the ball screw 30 abuts against the groove 1121.

[0045] In detail, such as Figure 4 The engagement of the locking part 112 and the locking platform 212 creates a preliminary lock between the base 10 and the adapter post 20. By setting the ball screw 30, the ball end 31 of the ball screw 30 abuts against the groove 1121 of the locking part 112, providing an additional locking point and ensuring a stable connection between the base 10 and the adapter post 20, preventing the base 10 from being directly removed from the adapter post 20. There is no need to use screws to connect the base 10 and the adapter post 20 in the insertion direction, making the operation simple and convenient. It can also effectively prevent the insertion end 11 from rotating in the insertion hole 21, ensuring that the base 10 remains in a fixed position during use and guaranteeing the treatment effect.

[0046] Meanwhile, when the ball end 31 of the ball screw 30 abuts against the groove 1121 of the locking part 112, it provides clear alignment sound feedback, letting the installer know that it has been installed correctly, reducing alignment and adjustment time and improving installation efficiency. At this time, the base 10 has been rotated to the second position, cannot be pulled out, and is limited by the ball screw 30. The combination of the two can prevent the base 10 from tilting or loosening, so the installer does not need to hold the base 10, and a single person can quickly install it. When disassembly is required, simply reverse the operation: first rotate the base 10 to the first position, the ball end 31 of the ball screw 30 disengages from the groove 1121, and then pull out the base 10 along the slide 213, simplifying the maintenance and replacement process.

[0047] In an embodiment of this utility model, two snap-fit ​​parts 112 are provided, and the two snap-fit ​​parts 112 are symmetrically arranged on the outer wall of the insertion end 11; two slide grooves 213 are provided, and the snap-fit ​​parts 112 and the slide grooves 213 are arranged one-to-one; two connecting holes 22 are provided, and the two connecting holes 22 are symmetrically arranged on the side wall of the adapter post 20; two ball screws 30 are provided, and the ball screws 30 are arranged one-to-one with the connecting holes 22.

[0048] It is worth noting that the two slides 213 are symmetrically arranged to provide two guide points, and the two locking parts 112 are symmetrically arranged to provide symmetrical limiting points, ensuring that the insertion end 11 can be quickly and accurately aligned with the center position from two directions when entering the socket 21. The dual-point guide design reduces the possibility of offset and improves alignment accuracy.

[0049] The ball ends 31 of the two ball screws 30 respectively abut against the grooves 1121 of the two snap-fit ​​parts 112, ensuring a stable connection between the base 10 and the adapter post 20, forming two anti-rotation points, which can effectively prevent the insertion end 11 from rotating in the socket 21, ensuring that the base 10 remains stable during use and the optical path does not shift.

[0050] In an embodiment of this utility model, the end face of the adapter post 20 is recessed with a stepped groove 23, and the outer wall of the base 10 is provided with a supporting flange 12. The supporting flange 12 extends into the stepped groove 23 and abuts against the bottom surface of the stepped groove 23.

[0051] Specifically, such as Figure 2 and Figure 4The design of the stepped groove 23 and the abutting flange 12 provides a clear positioning point. The abutting flange 12 extends into the stepped groove 23 and abuts against the bottom surface of the stepped groove 23, ensuring that the base 10 is not over-inserted when inserted into the adapter post 20, preventing connection failure or damage caused by over-insertion. This ensures that the base 10 reaches the correct depth when inserted into the adapter post 20, thus providing a precise starting point for subsequent rotation and snap-fit. The installer can easily rotate the base 10 so that the snap-fit ​​part 112 can connect with the snap-fit ​​platform 212, and allow the ball screw 30 to be inserted into the groove 1121.

[0052] In an embodiment of this utility model, the connecting structure 100 further includes a pressure cap 40, which is sleeved on the outside of the base 10 and threadedly connected to the outer wall of the adapter post 20.

[0053] In detail, the pressure cap 40 is fitted onto the outside of the base 10 and threaded to the outer wall of the adapter post 20, forming a closed space that effectively prevents external dust and contaminants from entering the connection part. At the same time, the pressure cap 40 can be easily disassembled and reinstalled through the threaded connection. When cleaning is required, the pressure cap 40 can be easily removed to thoroughly clean and maintain the connection part.

[0054] In another embodiment, the inner wall of the pressure cap 40 abuts against the top wall of the abutment flange 12. The pressure cap 40 firmly fixes the base 10 and the adapter post 20 together, and the tightening effect of the pressure cap 40 ensures that the base 10 will not loosen during use, improving the reliability of the connection. During laser treatment, the pressure cap 40 can effectively prevent the connection from loosening or falling off, ensuring the stability of the optical path. Furthermore, the base 10 can be easily locked or released by rotating the pressure cap 40, enabling quick installation and removal of the base 10 without the need for additional tools, making the operation simple.

[0055] like Figures 2 to 4 After installing the base 10 onto the adapter post 20, rotating the pressure cap 40 can lock and fix the light guide arm. To remove the base 10, first rotate the pressure cap 40 to loosen it, then rotate the base 10 90 degrees to pull the light guide arm upwards.

[0056] In an embodiment of this utility model, the connecting structure 100 further includes a sleeve 50, which is connected to the outside of the adapter post 20 and abuts against the end face of the pressure cap 40.

[0057] It is worth noting that a sleeve 50 is also provided, which cooperates with the cap 40 to abut against it. The sleeve 50 can protect the connection part between the adapter post 20 and the cap 40. That is, the sleeve 50 abuts against the end face of the cap 40, which increases the overall rigidity and stability of the connection structure 100 and prevents deformation or damage when subjected to external forces. The sleeve 50 is connected to the outside of the adapter post 20, which can cover the threads and other mechanical structures of the connection part, and also plays a role in decorating and beautifying the appearance of the equipment, making the overall equipment look cleaner and more professional. At the same time, in some embodiments, it can also prevent external dust, liquid and other contaminants from entering through the ball screw 30, affecting the stability and life of the connection.

[0058] This utility model also provides a laser therapy device (not shown in the figure), which includes a connecting structure 100 for the light guide arm as described above.

[0059] Specifically, the laser therapy device includes a main unit (not shown in the figure), a handpiece (not shown in the figure), a light guide arm (not shown in the figure), and a connecting structure 100. The main unit contains a laser, the connecting mechanism is located between the main unit and the light guide arm, the handpiece is connected to the light guide arm, and the light guide arm is used to transmit the laser from the main unit to the handpiece.

[0060] The specific structure of the light guide arm connection structure 100 is as described in the above embodiments. Since the laser therapy device 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.

[0061] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the technical concept of the present utility model using 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 connection structure for a light guide arm, characterized in that, The connection structure of the light guide arm includes: The base has an insertion end, the outer wall of which has a first conical inclined surface, and the insertion end also has a snap-fit ​​part; and The adapter post has a socket, and the inner wall of the socket has a second conical inclined surface; The insertion end is inserted into the socket and is engaged with the socket by the snap-fit ​​part, and the first tapered inclined surface and the second tapered inclined surface abut and limit the movement.

2. The connection structure of the light guide arm as described in claim 1, characterized in that, The circumferential dimension of the first tapered inclined surface gradually decreases from the end away from the latching part toward the latching part, and the circumferential dimension of the second tapered inclined surface gradually decreases from the opening of the insertion hole toward the inside of the insertion hole.

3. The connection structure of the light guide arm as described in claim 1, characterized in that, The inner wall of the insertion hole is also provided with a locking platform, which is located below the second conical inclined surface along the insertion direction. The inner wall of the insertion hole is provided with a sliding groove along the axial direction of the insertion hole, and the sliding groove passes through the first conical inclined surface and the locking platform. The insertion end is inserted into the insertion hole along the slide groove, so that the base has a first position that can be pulled out along the insertion hole and can be rotated to have a first position and a second position. When the base is in the first position, the insertion end is aligned with the socket; when the base is in the second position, the snap-fit ​​portion abuts against the snap-fit ​​platform.

4. The connection structure of the light guide arm as described in claim 3, characterized in that, The insertion hole includes a first hole segment and a second hole segment that are connected to each other. The connection between the first hole segment and the second hole segment forms the snap-fit ​​platform. The sliding groove and the second conical inclined surface are both provided in the first hole segment.

5. The connection structure of the light guide arm as described in claim 4, characterized in that, The side wall of the adapter post is also provided with a connecting hole that connects to the second hole segment, and the connecting hole is located between the first hole segment and the second hole segment; The connection structure of the light guide arm also includes a ball screw, which is connected to the connection hole, and the ball end of the ball screw extends into the second hole section. The surface of the snap-fit ​​part has a groove, and the ball end of the ball screw abuts against the groove.

6. The connection structure of the light guide arm as described in claim 5, characterized in that, The snap-fit ​​portion is provided in two parts, and the two snap-fit ​​portions are symmetrically arranged on the outer wall of the insertion end; Two slides are provided, and the snap-fit ​​part is provided in a one-to-one correspondence with the slide; Two connection holes are provided, and the two connection holes are symmetrically arranged on the side wall of the adapter post. Two ball screws are provided, and the ball screws are arranged in a one-to-one correspondence with the connection holes.

7. The connection structure of the light guide arm as described in any one of claims 1 to 6, characterized in that, The end face of the adapter post is recessed with a stepped groove, and the outer wall of the base is provided with a supporting flange. The supporting flange extends into the stepped groove and abuts against the bottom surface of the stepped groove.

8. The connection structure of the light guide arm as described in claim 1, characterized in that, The connection structure also includes a pressure cap, which is sleeved on the outside of the base and threaded to the outer wall of the adapter post.

9. The connection structure of the light guide arm as described in claim 8, characterized in that, The connection structure also includes a sleeve, which is connected to the outside of the adapter post and abuts against the end face of the cap.

10. A laser therapy device, characterized in that, The laser therapy device includes a connection structure for the light guide arm as described in any one of claims 1 to 9.

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