Limiting mechanism of portable low-frequency pulse meridian conditioning instrument

Abstract

The invention belongs to the technical field of medical equipment, and discloses a portable low-frequency pulse meridian conditioning instrument limiting mechanism which comprises a main body and an electrode plate body and further comprises a fixing mechanism arranged at one end of the main body, the fixing mechanism comprises an installation shell fixedly connected to one end of the main body, a sliding rail is fixedly installed in the installation shell, and the sliding rail is fixedly connected with the electrode plate body; the surface of the sliding rail is sleeved with two sliding blocks in a sliding mode. The first elastic piece can be compressed, then a plug connected with the electrode plate body can be inserted into the main body, then the trigger cylinder is loosened, the compressed first elastic piece can push the abutting block to abut against the surface of the plug, and finally the trigger mechanism is loosened to enable the first elastic piece to push the abutting block to make contact with the surface of the plug. And the elastic force of the first elastic piece is utilized to make the abutting block abut against the surface of the plug, so that the electrode slice body is prevented from being separated from the interior of the main body in the physiotherapy process, and the physiotherapy stability is improved.

Description

Technical Field

[0001] This invention belongs to the field of medical equipment technology, specifically a limiting mechanism for a portable low-frequency pulse meridian therapy instrument. Background Technology

[0002] With the development of modern science and technology, electrical stimulation technology has been widely used in the medical field. Low-frequency pulsed current is a form of current with a lower frequency and relatively less stimulation to the human body. Studies have found that when low-frequency pulsed current acts on the human body, it can cause muscle contraction and relaxation, promote local blood circulation, and relieve muscle spasms and pain. Currently, traditional portable low-frequency pulse meridian therapy devices require careful insertion of the plug connecting to the electrode pads into the corresponding interface inside the device. The electrode pads are then precisely installed on the body parts requiring treatment, such as acupoints on the shoulders, neck, and lower back. Afterward, medical staff will use the adjustment buttons on the device to fine-tune the therapy frequency based on the patient's current physical condition, tolerance, and specific treatment needs, thus officially commencing the therapy. Through low-frequency pulse stimulation of the meridians, the therapy aims to relieve pain and promote blood circulation, among other therapeutic effects.

[0003] However, in actual use, this traditional therapy device has revealed some problems that cannot be ignored. Portable low-frequency pulse meridian therapy devices are designed to be lightweight and easy to carry, which greatly facilitates medical staff in providing physiotherapy to patients in different scenarios, but it also brings drawbacks. During the therapy, patients may unconsciously move their bodies, medical staff may slightly shake their hands while operating, or there may be interference factors in the surrounding environment, such as someone accidentally touching the device. These situations can all potentially cause the device to move. More importantly, there is no limiting mechanism between the plug and the device. Once the device moves, the plug can easily drift away from the internal interface of the device under shaking and pulling, resulting in poor contact or even complete detachment. This not only interrupts the ongoing physiotherapy process and affects the treatment effect, but also reduces the stability of the therapy. Summary of the Invention

[0004] To address the problems mentioned in the background section, this invention provides a limiting mechanism for a portable low-frequency pulse meridian therapy device.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a limiting mechanism for a portable low-frequency pulse meridian therapy instrument, comprising a main body and an electrode plate body, and further comprising: A fixing mechanism is provided at one end of the main body. The fixing mechanism includes a mounting shell fixedly connected to one end of the main body. A slide rail is fixedly installed inside the mounting shell. Two sliders are slidably mounted on the surface of the slide rail. Two abutting blocks are fixedly installed at the top of the two sliders. The abutting blocks are elastically connected to the mounting shell through an elastic element. Two hinge rods are hinged to one side of each of the two sliders. One end of the two hinge rods is hinged through a hinge block. The triggering mechanism is located inside the main body.

[0006] Preferably, the triggering mechanism includes a take-up reel rotatably connected inside the main body, a connecting block fixedly installed on one side of the take-up reel, a groove formed on the surface of the connecting block, a trigger cylinder slidably fitted on the surface of the connecting block, a ball bearing located inside the groove being rolledly connected inside the trigger cylinder, the trigger cylinder being elastically connected to the main body via an elastic element, a connecting rope fixedly installed on the surface of the take-up reel, one end of the connecting rope extending into the interior of the mounting shell and fixedly connected to one end of the hinge block.

[0007] Preferably, the groove is S-shaped, and the surface of the ball fits against the inner wall of the groove, and the surface of the ball is smooth.

[0008] Preferably, it further includes: A reinforcement mechanism is disposed inside the mounting housing. The reinforcement mechanism includes an elastic element three fixedly connected inside the mounting housing. A fixing block is fixedly installed at one end of the elastic element three. A rack is fixedly installed on one side of the fixing block. A gear located at the top of the rack is rotatably connected to one side inside the mounting housing. A collar located outside the mounting housing is fixedly installed on one side of the gear. A pressing block located on one side of the fixing block is fixedly installed at the bottom end of the hinge block.

[0009] Preferably, it further includes: A locking mechanism is provided inside the main body. The locking mechanism includes an anti-collision shell that is slidably connected inside the main body. A lead screw is provided inside the main body, and one end of the lead screw is fixedly connected to a winding reel. A threaded plate is threaded onto the surface of the lead screw. An elastic element four is fixedly installed on one side of the threaded plate. An insert block located inside the anti-collision shell is fixedly installed at one end of the elastic element four.

[0010] Preferably, it further includes: A limiting component is disposed inside the main body. The limiting component includes a limiting groove formed inside the main body. A limiting block is slidably connected inside the limiting groove, and the limiting block is fixedly connected to a threaded plate.

[0011] Preferably, the gear is fixedly mounted with two limiting rings, and the surfaces of both limiting rings are in contact with the surface of the mounting shell.

[0012] Preferably, a roller is rotatably connected to one side of the slide rail, and the surface of the connecting rope is wrapped around the surface of the roller.

[0013] Preferably, one side of the insert is designed with a bevel, and the surface of the insert fits against the inner wall of the anti-touch shell.

[0014] Preferably, the elastic element three is provided with a telescopic rod inside, and the fixed block and the pressing block are both designed with inclined surfaces on opposite sides, and the two inclined surfaces are parallel to each other.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention involves pressing a trigger cylinder to slide it on the surface of a connecting block. The trigger cylinder causes a ball bearing to roll along the inner wall of a groove, which in turn causes the connecting block and a take-up reel to rotate. The take-up reel winds a connecting rope around its surface, which in turn pulls a hinge block to move. The hinge block then pulls two hinge rods to rotate, and the hinge rods push a slider and abutment block to move towards each other. As the abutment block moves, an elastic element is compressed, allowing the plug connected to the electrode pad to be inserted into the main body. Then, the trigger cylinder is released, and the compressed elastic element pushes the abutment block against the surface of the plug. Finally, by releasing the trigger mechanism, the elastic element pushes the abutment block into contact with the surface of the plug. The elastic force of the elastic element ensures that the abutment block contacts the surface of the plug, thus preventing the electrode pad from detaching from the main body during physiotherapy and improving the stability of the physiotherapy. When the hinge block is reset by the elastic element one, the hinge block will drive the pressing block to move again. The pressing block will then press and push the fixed block and the rack to move. When the fixed block moves, the elastic element three will be stretched. Then the rack will drive the gear and the collar to rotate in the opposite direction. The gear will be fitted onto the surface of the plug, thereby preventing the plug from being pulled out. Finally, the hinge block and the pressing block will work together to make the collar fit onto the surface of the plug, thus cooperating with the fixing mechanism to improve the fixing effect of the plug. This invention utilizes the rotation of the winding reel to drive the lead screw to rotate. A threaded plate moves across the surface of the lead screw, pulling the elastic element and the insert away from the interior of the anti-contact housing, thus unlocking the housing. The housing can then slide inside the main body, revealing the control buttons at the top. The frequency of the therapy can be controlled using these buttons. After adjustment, the housing is pushed back to its original position. During this reset, the housing contacts the surface of the insert and moves it, compressing the elastic element. When the fixing groove on one side of the housing aligns with the insert, the compressed elastic element releases its elastic potential energy, pushing the insert back into the housing for precise positioning. This effectively prevents accidental activation of the adjustment buttons, ensuring the safety and stability of the therapy process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional schematic diagram of the main body of the present invention; Figure 3 This is a cross-sectional view of the mounting shell of the present invention; Figure 4 This is a schematic diagram showing the interior of the main body of the invention; Figure 5 For the present invention Figure 4 Enlarged diagram of point A in the diagram; Figure 6 This is a schematic diagram illustrating the driving component of the present invention; Figure 7 This is a schematic diagram illustrating the reinforcement mechanism of the present invention; Figure 8 This is a schematic diagram illustrating the roller of the present invention.

[0017] In the diagram: 1. Main body; 2. Electrode plate body; 3. Fixing mechanism; 301. Mounting shell; 302. Slide rail; 303. Slider; 304. Contact block; 305. Elastic element one; 306. Hinge rod; 307. Hinge block; 4. Triggering mechanism; 401. Rewinding reel; 402. Connecting block; 403. Slide groove; 404. Trigger cylinder; 405. Ball bearing; 406. Elastic element two; 407. 5. Reinforcing mechanism; 501. Elastic component three; 502. Fixing block; 503. Rack; 504. Gear; 505. Collar; 506. Pressing block; 6. Locking mechanism; 601. Anti-collision shell; 602. Lead screw; 603. Threaded plate; 604. Elastic component four; 605. Insert block; 7. Limiting assembly; 701. Limiting groove; 702. Limiting block; 8. Limiting ring; 9. Roller. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figures 1 to 8 As shown, the present invention provides a limiting mechanism for a portable low-frequency pulse meridian therapy instrument, comprising a main body 1 and an electrode plate body 2, and further comprising: The fixing mechanism 3 is located at one end of the main body 1. The fixing mechanism 3 includes a mounting shell 301 fixedly connected to one end of the main body 1. A slide rail 302 is fixedly installed inside the mounting shell 301. Two sliders 303 are slidably mounted on the surface of the slide rail 302. Two abutting blocks 304 are fixedly installed at the top of the two sliders 303. The abutting blocks 304 are elastically connected to the mounting shell 301 through an elastic element 305. Two hinge rods 306 are hinged to one side of each of the two sliders 303. One end of the two hinge rods 306 is hinged through a hinge block 307. Triggering mechanism 4 is located inside the main body 1.

[0020] Using the above scheme: the operator presses the trigger mechanism 4 to move the hinge block 307. Since one end of the two hinge rods 306 is hinged through the hinge block 307, the moving hinge block 307 will pull the two hinge rods 306 to rotate. The hinge rods 306 will push the slider 303 to move on the surface of the slide rail 302. The slider 303 will drive the two abutment blocks 304 to move towards each other. When the abutment blocks 304 move, the elastic element 305 will be compressed. Then the plug connected to the electrode plate body 2 can be inserted into the body 1. After installation, the trigger mechanism 4 can be released, and the compressed elastic element 305 will push the abutment blocks 304 towards each other. Block 304 moves toward the surface of the plug, and then the contact block 304 contacts the surface of the plug, thereby fixing the plug. After fixing, the electrode pad body 2 can be attached to the part of the patient that needs physiotherapy. Then, according to the patient's needs, the physiotherapy frequency can be adjusted using the button at the top of the main body 1 to carry out the physiotherapy. Finally, by releasing the trigger mechanism 4, the elastic element 305 pushes the contact block 304 to contact the surface of the plug. Then, the elastic force of the elastic element 305 makes the contact block 304 contact the surface of the plug, thereby preventing the electrode pad body 2 from detaching from the interior of the main body 1 during the physiotherapy, thus improving the stability of the physiotherapy.

[0021] like Figure 5 and Figure 6 As shown, the triggering mechanism 4 includes a take-up reel 401 rotatably connected inside the main body 1. A connecting block 402 is fixedly installed on one side of the take-up reel 401. A groove 403 is provided on the surface of the connecting block 402. A trigger cylinder 404 is slidably sleeved on the surface of the connecting block 402. A ball bearing 405 located inside the groove 403 is rotatably connected inside the trigger cylinder 404. The trigger cylinder 404 is elastically connected to the main body 1 through an elastic element 406. A connecting rope 407 is fixedly installed on the surface of the take-up reel 401. One end of the connecting rope 407 extends into the interior of the mounting shell 301 and is fixedly connected to one end of the hinge block 307.

[0022] like Figure 5 and Figure 6As shown, the slide 403 has an S-shaped design, and the surface of the ball 405 is in contact with the inner wall of the slide 403. The surface of the ball 405 has a smooth design.

[0023] Using the above scheme: Through the design of the trigger mechanism 4, the trigger cylinder 404 can be pressed to make it slide on the surface of the connecting block 402. During the sliding process, the ball 405 will roll inside the slide groove 403, and the trigger cylinder 404 will squeeze the elastic element 406. The slide groove 403 is S-shaped, and the surface of the ball 405 is in contact with the inner wall of the slide groove 403. As a result, the ball 405 will roll along the inner wall of the slide groove 403, which will drive the connecting block 402 and the take-up reel 401 to rotate. The take-up reel 401 will wind the connecting rope 407 on its surface, and the connecting rope 407 will pull the hinge block 307 to move. The hinge block 307 will drive the two hinge rods 306 to rotate.

[0024] like Figure 3 and Figure 8 As shown, it also includes: The reinforcement mechanism 5 is located inside the mounting shell 301. The reinforcement mechanism 5 includes an elastic element 501 fixedly connected inside the mounting shell 301. A fixing block 502 is fixedly installed at one end of the elastic element 501. A rack 503 is fixedly installed on one side of the fixing block 502. A gear 504 located at the top of the rack 503 is rotatably connected to one side inside the mounting shell 301. A collar 505 located outside the mounting shell 301 is fixedly installed on one side of the gear 504. A pressing block 506 located on one side of the fixing block 502 is fixedly installed at the bottom end of the hinge block 307.

[0025] Using the above solution: Through the design of the reinforcing mechanism 5, when the hinge block 307 moves, the pressing block 506 will move in conjunction with it. The pressing block 506 will move away from the side of the fixed block 502. Then, the stretched elastic element 501 will pull the fixed block 502 back to its original position. The fixed block 502 will then pull the rack 503 to move. Because the rack 503 meshes with the gear 504, the moving rack 503 will drive the gear 504 to rotate. The gear 504 will drive the collar 505 to rotate, thus preventing interference with the insertion of the plug at one end of the electrode body 2 into the body 1. After the electrode body 2 is installed... When the elastic element 305 pushes the hinge block 307 to reset, the hinge block 307 will drive the pressing block 506 to move again. The pressing block 506 will press and push the fixing block 502 and the rack 503 to move. When the fixing block 502 moves, the elastic element 3 501 will be stretched. Then the rack 503 will drive the gear 504 and the collar 505 to rotate in the opposite direction. The gear 504 will be fitted onto the surface of the plug, thereby preventing the plug from being pulled out. Finally, the hinge block 307 and the pressing block 506 will work together to make the collar 505 fit onto the surface of the plug, thus cooperating with the fixing mechanism 3 to improve the fixing effect of the plug.

[0026] like Figure 5 and Figure 6 As shown, it also includes: The locking mechanism 6 is located inside the main body 1. The locking mechanism 6 includes an anti-collision shell 601 that is slidably connected inside the main body 1. A lead screw 602 is provided inside the main body 1, and one end of the lead screw 602 is fixedly connected to the winding reel 401. A threaded plate 603 is threaded onto the surface of the lead screw 602. An elastic element 604 is fixedly installed on one side of the threaded plate 603. An insert block 605 located inside the anti-collision shell 601 is fixedly installed at one end of the elastic element 604.

[0027] Using the above solution: Through the design of the locking mechanism 6, when the winding reel 401 rotates, it will drive the lead screw 602 to rotate. Since the lead screw 602 is threadedly connected to the threaded plate 603, the threaded plate 603 will move on the surface of the lead screw 602. The threaded plate 603 will pull the elastic element 604 and the insert block 605 away from the interior of the anti-collision shell 601, thereby unlocking the anti-collision shell 601. Then, the anti-collision shell 601 can be pushed to slide inside the main body 1, exposing the control button at the top of the main body 1. Then, the button can be used to control the winding mechanism. After the frequency of the therapy is adjusted, the anti-touch shell 601 can be pushed back to reset, and then the anti-touch shell 601 will come into contact with the surface of the insertion block 605 and push the insertion block 605 to move. When the insertion block 605 moves, the elastic element 4 604 will be compressed. When the fixing groove on one side of the anti-touch shell 601 is aligned with the insertion block 605, the compressed elastic element 4 604 will push the insertion block 605 back into the interior of the anti-touch shell 601 to precisely limit its movement, effectively preventing the operator from accidentally touching the adjustment button and ensuring the safety and stability of the therapy process.

[0028] like Figure 5 As shown, it also includes: The limiting component 7 is disposed inside the main body 1. The limiting component 7 includes a limiting groove 701 opened inside the main body 1. A limiting block 702 is slidably connected inside the limiting groove 701, and the limiting block 702 is fixedly connected to the threaded plate 603.

[0029] The above solution is adopted: through the design of the limiting component 7, when the threaded plate 603 moves, it will drive the limiting block 702 to slide inside the limiting groove 701. During the sliding process, the threaded plate 603 can be limited, thereby ensuring that the threaded plate 603 can move on the surface of the lead screw 602.

[0030] like Figure 8 As shown, the gear 504 is fixedly mounted with two limiting rings 8, and the surfaces of the two limiting rings 8 are in contact with the surface of the mounting shell 301. A roller 9 is rotatably connected to one side of the slide rail 302, and the surface of the connecting rope 407 is wrapped around the surface of the roller 9.

[0031] The above solution is adopted as follows: Through the design of the limiting ring 8, when the gear 504 rotates, it will drive the limiting ring 8 to rotate. Since the surfaces of both limiting rings 8 are in contact with the surface of the mounting shell 301, the limiting ring 8 can limit the gear 504 and prevent its setting from shifting when the gear 504 rotates. Through the design of the roller 9, when the connecting rope 407 moves, the friction between the connecting rope 407 and the roller 9 will drive the connecting rope 407 to rotate. The roller 9 can guide the connecting rope 407 to move stably, reduce the friction between the connecting rope 407 and the main body 1, and improve the service life of the connecting rope 407.

[0032] like Figure 5 and Figure 8 As shown, one side of the insert 605 is designed with a slope, and the surface of the insert 605 is in contact with the inner wall of the anti-collision shell 601. The elastic element 501 is equipped with a telescopic rod inside. The fixed block 502 and the pressing block 506 are both designed with slopes on opposite sides, and the two slopes are parallel to each other.

[0033] The above solution employs the following: The design of the insert block 605, with one side being a sloping surface, reduces friction between the anti-collision shell 601 and the insert block 605, ensuring the anti-collision shell 601 can push the insert block 605 to move stably. Furthermore, the surface of the insert block 605 fits against the inner wall of the anti-collision shell 601, ensuring its fixation. The design of the elastic element 501, the fixing block 502, and the pressing block 506, with a telescopic rod inside the elastic element 501, limits its movement when stretched. Additionally, the fixing block 502 and the pressing block 506 both have sloping surfaces on opposite sides, reducing friction between them and ensuring the pressing block 506 can stably push the fixing block 502 and the rack 503 to move.

[0034] Working principle and usage process of this invention: First, the operator presses the trigger cylinder 404 to make it slide on the surface of the connecting block 402. The trigger cylinder 404 will drive the ball 405 to roll along the inner wall of the slide groove 403, and will also drive the connecting block 402 and the take-up reel 401 to rotate. The take-up reel 401 will wind the connecting rope 407 around its surface, and the connecting rope 407 will pull the hinge block 307 to move. The hinge block 307 will pull the two hinge rods 306 to rotate. The hinge rods 306 will push the slider 303 and the abutment block 304 to move towards each other. When the abutment block 304 moves, the elastic element 305 will be compressed. At the same time, when the hinge block 307 moves, the pressing block 506 will move in conjunction with it. The pressing block 506 will move away from the side of the fixed block 502. The stretched elastic element 3 501 will pull the fixed block 502 and the rack 503 to move. The rack 503 will drive the gear 504 and the collar 505 to rotate, so as not to interfere with the insertion of the plug at one end of the electrode sheet body 2 into the body 1. Next, when the take-up reel 401 rotates, it will drive the lead screw 602 to rotate. The threaded plate 603 will move on the surface of the lead screw 602. The threaded plate 603 will pull the elastic element 604 and the insert block 605 away from the interior of the anti-touch shell 601, thereby unlocking the anti-touch shell 601. Then, the anti-touch shell 601 can be pushed to slide inside the main body 1, so that the control button at the top of the main body 1 is exposed. Then, the plug connected to the electrode pad body 2 can be inserted into the interior of the main body 1. After installation, the trigger cylinder 404 is released, and the compressed elastic element 2 406 and the abutment block 304 will push the trigger cylinder 404 and the elastic element 1 305 to reset. The compressed elastic element 1 305 will push the abutment block 304 to abut the surface of the plug, fixing the plug. The reset hinge block 307 will drive the squeezing block 506 to move again, and the squeezing block 506 will squeeze and push the fixing block 502 and the rack 503 to move. When the fixing block 502 moves, the elastic element 3 501 will be stretched. Then the rack 503 will drive the gear 504 and the collar 505 to rotate in the opposite direction. The gear 504 will be fitted onto the surface of the plug, thus preventing the plug from being pulled out. Then, the electrode pad body 2 can be attached to the part of the patient that needs physiotherapy. Then, according to the patient's needs, the physiotherapy frequency can be adjusted using the button at the top of the main body 1 to perform the physiotherapy work, and finally complete the operation process.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A limiting mechanism for a portable low-frequency pulse meridian therapy instrument, comprising a main body (1) and an electrode plate body (2), characterized in that, Also includes: A fixing mechanism (3) is provided at one end of the main body (1). The fixing mechanism (3) includes a mounting shell (301) fixedly connected to one end of the main body (1). A slide rail (302) is fixedly installed inside the mounting shell (301). Two sliders (303) are slidably mounted on the surface of the slide rail (302). Two abutting blocks (304) are fixedly installed at the top of the two sliders (303). The abutting blocks (304) are elastically connected to the mounting shell (301) through an elastic element (305). Two hinge rods (306) are hinged to one side of each of the two sliders (303). One end of the two hinge rods (306) is hinged through a hinge block (307). Triggering mechanism (4) is located inside the main body (1).

2. The limiting mechanism of the portable low-frequency pulse meridian therapy instrument according to claim 1, characterized in that: The triggering mechanism (4) includes a take-up reel (401) rotatably connected inside the main body (1). A connecting block (402) is fixedly installed on one side of the take-up reel (401). A groove (403) is provided on the surface of the connecting block (402). A trigger cylinder (404) is slidably sleeved on the surface of the connecting block (402). A ball (405) located inside the groove (403) is rotatably connected inside the trigger cylinder (404). The trigger cylinder (404) is elastically connected to the main body (1) through an elastic element (406). A connecting rope (407) is fixedly installed on the surface of the take-up reel (401). One end of the connecting rope (407) extends into the interior of the mounting shell (301) and is fixedly connected to one end of the hinge block (307).

3. The limiting mechanism of the portable low-frequency pulse meridian therapy instrument according to claim 2, characterized in that: The groove (403) is S-shaped, and the surface of the ball (405) is in contact with the inner wall of the groove (403). The surface of the ball (405) is smooth.

4. The limiting mechanism of the portable low-frequency pulse meridian therapy instrument according to claim 1, characterized in that, Also includes: The reinforcement mechanism (5) is located inside the mounting shell (301). The reinforcement mechanism (5) includes an elastic element three (501) fixedly connected inside the mounting shell (301). A fixing block (502) is fixedly installed at one end of the elastic element three (501). A rack (503) is fixedly installed on one side of the fixing block (502). A gear (504) located at the top of the rack (503) is rotatably connected to one side inside the mounting shell (301). A collar (505) located outside the mounting shell (301) is fixedly installed on one side of the gear (504). A pressing block (506) located on one side of the fixing block (502) is fixedly installed at the bottom end of the hinge block (307).

5. The limiting mechanism of the portable low-frequency pulse meridian therapy instrument according to claim 1, characterized in that, Also includes: A locking mechanism (6) is provided inside the main body (1). The locking mechanism (6) includes an anti-collision shell (601) that is slidably connected inside the main body (1). A lead screw (602) is provided inside the main body (1), and one end of the lead screw (602) is fixedly connected to the winding reel (401). A threaded plate (603) is threaded onto the surface of the lead screw (602). An elastic element four (604) is fixedly installed on one side of the threaded plate (603). An insert block (605) located inside the anti-collision shell (601) is fixedly installed at one end of the elastic element four (604).

6. The limiting mechanism of the portable low-frequency pulse meridian therapy instrument according to claim 1, characterized in that, Also includes: The limiting component (7) is located inside the main body (1). The limiting component (7) includes a limiting groove (701) opened inside the main body (1). A limiting block (702) is slidably connected inside the limiting groove (701), and the limiting block (702) is fixedly connected to the threaded plate (603).

7. The limiting mechanism of the portable low-frequency pulse meridian therapy instrument according to claim 4, characterized in that: The gear (504) is fixedly mounted with two limiting rings (8), and the surfaces of the two limiting rings (8) are in contact with the surface of the mounting shell (301).

8. The limiting mechanism of the portable low-frequency pulse meridian therapy instrument according to claim 1, characterized in that: A roller (9) is rotatably connected to one side of the slide rail (302), and the surface of the connecting rope (407) is wrapped around the surface of the roller (9).

9. The limiting mechanism of the portable low-frequency pulse meridian therapy instrument according to claim 5, characterized in that: One side of the insert (605) is designed with a bevel, and the surface of the insert (605) is in contact with the inner wall of the anti-touch shell (601).

10. The limiting mechanism of the portable low-frequency pulse meridian therapy instrument according to claim 4, characterized in that: The elastic element three (501) is provided with a telescopic rod inside. The fixed block (502) and the pressing block (506) are both designed with inclined surfaces on opposite sides, and the two inclined surfaces are parallel to each other.

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