First-aid device for arrhythmia patient

Abstract

The invention discloses a first-aid device for an arrhythmia patient, and belongs to the technical field of first aid for the arrhythmia patient, the first-aid device for the arrhythmia patient comprises an equipment frame and a defibrillator which is stored in the equipment frame and used for first aid for the arrhythmia patient, the defibrillator is connected with an electrode plate through a cable, the equipment frame is slidably connected with a pull plate, and the pull plate is connected with the defibrillator through a cable. The defibrillator is placed on the drawing plate; the upper end face of the equipment frame is rotationally connected with a steering support, one side of the steering support is provided with a supporting mechanism for supporting an electrode slice to assist the electrode slice in placing and charging, and the other side of the steering support is provided with a conductive paste coating and brushing mechanism for automatically coating conductive paste on the surface of the electrode slice. The first-aid device can stably erect the electrode slice for charging, and can automatically smear conductive paste on the surface of the electrode slice, thereby liberating the hands of medical personnel, so that the medical personnel can quickly carry out first-aid work.

Description

Technical Field

[0001] The present invention relates to the technical field of first aid for patients with arrhythmia, and specifically to a first aid device for patients with arrhythmia. Background Art

[0002] When a patient with arrhythmia has an attack, they need to stay calm and avoid nervousness and excitement, which helps to relieve symptoms. For some types of arrhythmia such as paroxysmal supraventricular tachycardia, attempts can be made to terminate the attack by stimulating the vagus nerve, such as forceful coughing, pressing on the orbital cavity or the gag reflex, etc. For pulseless ventricular tachycardia or ventricular fibrillation, an automated external defibrillator should be immediately used for defibrillation. The defibrillator is connected to the patient's body through electrode pads, and a high-energy electrical pulse is applied to the heart, causing all myocardial cells in the heart to depolarize simultaneously in a short period of time, thereby suppressing ectopic excitability and restoring the impulse issued by the sinoatrial node with the highest rhythm, and finally restoring to sinus rhythm.

[0003] For example, the patent with the publication number CN118593902A discloses a first aid device for patients with arrhythmia, including a defibrillator main body; an electrode plate main body is installed on the top of the defibrillator main body; two groups of chutes are opened on the top of the defibrillator main body; a clamping plate is slidably connected to the middle of the chute; a clamping pin is fixedly connected to the inner wall of the clamping plate; two groups of card slots matching the shape of the clamping pin are opened in the middle of the electrode plate main body; cooperating with the clamping pin stuck in the middle of the electrode plate main body can improve the stability when the electrode plate main body is fixed in the middle of the defibrillator main body, reduce the problem that the connection between the port of the defibrillator main body becomes loose and causes the disconnection from the electrode plate main body, and at the same time reduce the problem that when the electrode plate main body needs to be taken out due to the tight connection between the electrode plate main body and the port of the defibrillator main body, it is necessary to frequently shake the middle of the electrode plate main body, and improve the service life of the electrode plate main body and the port of the defibrillator main body.

[0004] For example, the patent with the publication number CN209106585U discloses a medical cabinet, including a cabinet frame, a defibrillator arranged in the cabinet frame, a medicine box storage and a medicine box automatic ejection mechanism, a medicine taking door panel assembly and a defibrillator door panel assembly arranged in front of the cabinet frame, a rear door panel assembly arranged at the back of the cabinet frame, and a base connected to the bottom of the cabinet frame; this medical cabinet can be placed in crowded places such as residential communities, enterprises and institutions, and schools, providing two services: medicine taking and using a defibrillator to rescue patients with severe arrhythmia.

[0005] For another example, a patent with the publication number CN219185618U discloses an external defibrillator, which includes a defibrillator body and a machine cover. The machine cover is rotatably installed at the upper end of the defibrillator body. It also includes a wire winding mechanism for winding the defibrillator wire. The wire winding mechanism is installed at the upper end of the defibrillator body. The wire winding mechanism includes a groove and a support wheel. The groove is opened at the upper end of the defibrillator body, and the support wheel is rotatably installed inside the groove. By opening a groove at the upper end of the external defibrillator and rotatably installing a support wheel inside the groove, the support wheel can be manually rotated through a rocker or automatically rotated through a motor. When the support wheel rotates, the defibrillator wire is wound, which also facilitates the quick pulling out of the defibrillator wire without entanglement or knotting; before using the defibrillator, it is necessary to first apply conductive paste to the surface of the electrode pads and then charge the electrode pads. This operation step requires an independent operation by a medical staff member. During this process, this medical staff member cannot contact the patient. For a patient in a very urgent state, another medical staff member is needed to help the patient lie flat, open the clothes, etc. In this way, if one medical staff member performs first aid, the pre-treatment time before first aid is relatively long, affecting the first aid time. If the first aid efficiency is to be improved, at least two medical staff members are required to complete the pre-treatment work before first aid, consuming manpower. Some existing defibrillators are not convenient for autonomously completing the charging and applying conductive paste work in a state without manual assistance, and the degree of automation application is limited. In addition, uneven application of conductive paste on the surface of the electrode pads will cause an increase in local contact impedance, affecting the uniform distribution of current, thereby reducing the defibrillation effect. It is easy to apply the conductive paste unevenly manually in an emergency situation.

[0006] In view of the above problems, it is urgent to innovate and design on the basis of the original first aid device for arrhythmia patients. Summary of the Invention

[0007] The purpose of the present invention is to provide a first aid device for arrhythmia patients to solve the problem that some existing defibrillators are not convenient for autonomously completing the charging and applying conductive paste work in a state without manual assistance and the limited degree of automation application mentioned in the above background technology.

[0008] To achieve the above purpose, the present invention provides the following technical solution: A first aid device for arrhythmia patients, which includes an equipment rack and a defibrillator stored in the equipment rack for first aid of arrhythmia patients. An electrode pad is connected to the defibrillator through a cable. A pull-out plate is slidably connected to the equipment rack, and the defibrillator is placed on the pull-out plate; A steering support is rotatably connected to the upper end surface of the equipment rack. A support mechanism for supporting the electrode pad to assist its placement and charging is arranged on one side of the steering support, and a conductive paste brushing mechanism for automatically applying conductive paste on the surface of the electrode pad is arranged on the other side of the steering support.

[0009] Preferably, the support mechanism includes two front support frames symmetrically and rotatably installed on the steering support. A card seat is fixedly installed on the front support frame, and the electrode pad can be snap-fitted and placed on the card seat.

[0010] Preferably, a positioning frame is fixedly connected to the side of the front support frame. A magnetic sheet is fitted and installed on the side of the positioning frame. When the two symmetrically distributed front support frames are rotated to the vertical state, the two positioning frames on their sides are mutually attached, and the two attached positioning frames are magnetically adsorbed through the magnetic sheet.

[0011] Preferably, the conductive paste brushing mechanism includes a rear support frame rotatably connected to the steering support. A lifting moving seat is slidably connected to the rear support frame. A chuck is rotatably installed in the lifting moving seat; a piston syringe for storing conductive paste is fixedly installed inside the chuck.

[0012] Preferably, a transmission rotating rod is fixedly connected between the rear support frame and the front support frame, and the rotation planes of the front support frame and the rear support frame are perpendicular to the rotation plane of the steering support.

[0013] Preferably, an electric telescopic rod is installed outside the piston syringe, and the output end of the electric telescopic rod is connected to the piston rod inside the piston syringe; the injection port of the piston syringe corresponds to the position of the electrode sheet clamped on the card seat.

[0014] Preferably, a lead screw is rotatably connected to the outside of the rear support frame, and an internally threaded block is sleeved on the outside of the lead screw. The internally threaded block is fixedly connected to the outside of the lifting moving seat.

[0015] Preferably, a rotating mechanism for driving the chuck to rotate reciprocally to expand the range of conductive paste applied by the piston syringe is provided on the lifting moving seat.

[0016] Preferably, the rotating mechanism includes a side frame fixedly connected to the bottom of the lifting moving seat. A runner is rotatably connected to the side of the side frame. The surface of the runner is mutually attached to the inner side of the frame body of the rear support frame; two runners are symmetrically arranged at the bottom of the lifting moving seat with respect to the center of the chuck. A driving column is coaxially connected to the sides of the two runners. A sliding ring is movably sleeved on the outside of the driving column; a disc seat is coaxially connected to the bottom surface of the chuck along the rotation direction. A transmission telescopic support rod is fixedly connected to the disc seat. The transmission telescopic support rod is rotatably connected to the surface of the sliding ring.

[0017] Preferably, an arc-shaped groove is obliquely opened on the outer surface of the driving column along the circumferential direction. A sliding rod is clamped and slidably connected in the arc-shaped groove, and the sliding rod is fixedly connected to the inner side wall of the sliding ring; the driving column is eccentrically corresponding to the lower part of the disc seat.

[0018] Compared with the prior art, the beneficial effect of the present invention is that: for the first-aid device for arrhythmia patients, when in use, the defibrillator can be quickly pulled out by the pulling plate for use, and the electrode sheet on the defibrillator is restricted to the upper position of the equipment rack, liberating the hands of medical staff and enabling medical staff to quickly carry out first-aid work.

[0019] Further, a support mechanism for assisting the placement and charging of the support electrode sheet is provided on one side of the steering support. The steering support and the front support frame are controlled to rotate and unfold, and the electrode sheet is snap-fitted onto the card seat on the front support frame, so that the electrode sheet can be stably arranged above the equipment rack to complete the charging operation.

[0020] Further, a conductive paste brushing mechanism for automatically applying conductive paste on the surface of the electrode sheet is provided on the other side of the steering support. The lifting and moving seat is controlled to move downward along the vertical direction of the rear support frame. During the movement of the piston syringe in the lifting and moving seat, conductive paste is automatically applied to the surface of the electrode sheet, saving manpower.

[0021] The operating motor controls the rotation of the lead screw. Under the screw drive between the lead screw and the internally threaded block, the lifting and moving seat is controlled to move directionally along the vertical direction of the rear support frame, and the movement trajectory of the piston syringe for applying conductive paste is controlled.

[0022] When the lifting and moving seat moves on the rear support frame, the runner at the bottom of the lifting and moving seat fits and rolls on the rear support frame. The runner drives the driving column to rotate. The driving column can control the reciprocating movement of the external slip ring through the arc groove and the sliding rod. Under the driving action of the transmission telescopic support rod and the disc seat, the chuck and the piston syringe can be controlled to rotate reciprocally at a certain angle, so that the piston syringe can reciprocally move while moving longitudinally, maintaining the uniformity of the conductive paste applied on the surface of the electrode sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the defibrillator of the present invention.

[0024] Figure 2 It is a three-dimensional structural schematic diagram of the equipment rack of the present invention.

[0025] Figure 3 It is a three-dimensional structural schematic diagram of the electrode sheet of the present invention.

[0026] Figure 4 It is a three-dimensional structural schematic diagram of the steering support of the present invention.

[0027] Figure 5 It is a three-dimensional structural schematic diagram of the front support frame of the present invention.

[0028] Figure 6 It is a three-dimensional structural schematic diagram of the card seat of the present invention.

[0029] Figure 7 It is a three-dimensional structural schematic diagram of the positioning frame of the present invention.

[0030] Figure 8 It is a three-dimensional structural schematic diagram of the rear support frame of the present invention.

[0031] Figure 9 It is a three-dimensional structural schematic diagram of the chuck of the present invention.

[0032] Figure 10 It is a schematic diagram of the three-dimensional structure of the lifting and moving seat of the present invention.

[0033] Figure 11 It is a schematic diagram of the three-dimensional structure of the driving column of the present invention.

[0034] Figure 12 It is a schematic diagram of the three-dimensional structure of the sliding rod of the present invention.

[0035] In the figure: 1. Equipment rack; 2. Pull-out plate; 3. Defibrillator; 4. Cable; 5. Electrode; 6. Steering support; 7. Front support frame; 8. Card seat; 9. Positioning frame; 10. Magnetic plate; 11. Rear support frame; 12. Transmission rotating rod; 13. Lifting and moving seat; 14. Chuck; 15. Piston syringe; 16. Electric telescopic rod; 17. Screw; 18. Internal thread block; 19. Side frame; 20. Rotating wheel; 21. Driving column; 22. Slip ring; 23. Disc seat; 24. Transmission telescopic support rod; 25. Arc groove; 26. Slide rod. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example 1: Please refer to Figures 1-12 The present invention provides the following technical solution: an emergency device for patients with arrhythmia, comprising an equipment rack 1 and a defibrillator 3 for emergency treatment of patients with arrhythmia stored in the equipment rack 1, the defibrillator 3 being connected to an electrode sheet 5 via a cable 4, a pull-out plate 2 being slidably connected to the equipment rack 1, and the defibrillator 3 being placed on the pull-out plate 2; a steering support 6 being rotatably connected to the upper end surface of the equipment rack 1, and a supporting mechanism for supporting the electrode sheet 5 to assist in its placement and charging is provided on one side of the steering support 6.

[0038] The supporting mechanism comprises two front supporting frames 7 symmetrically rotatably mounted on the steering support 6 , on which a holder 8 is fixedly mounted, and the electrode sheet 5 can be placed on the holder 8 by being engaged.

[0039] A positioning frame 9 is fixedly connected to the side of the front support frame 7, and a magnetic sheet 10 is embedded and installed on the side of the positioning frame 9. When the two symmetrically distributed front support frames 7 are rotated to a vertical state, the two positioning frames 9 on the side are fitted to each other, and the two fitted positioning frames 9 are magnetically adsorbed by the magnetic sheet 10.

[0040] When rescuing patients with arrhythmia, move the equipment rack 1 to the position beside the patient. The staff quickly pull out the pull-out plate 2 from the equipment rack 1, and control the front support frame 7 to rotate and unfold on the steering support 6. The front support frames 7 on both sides of the steering support 6 rotate to the vertical state. At this time, the sides of the positioning frames 9 on the sides of the two front support frames 7 are mutually attached, and the magnetic pieces 10 on the sides of the two positioning frames 9 attract each other. Under the magnetic adsorption effect, the rotation position of the front support frame 7 is restricted. Then, control the steering support 6 to rotate forward, so that the front support frame 7 is inclined and arranged above the equipment rack 1. The rotation of the steering support 6 and the front support frame 7 is a damping rotation structure, and its rotation position can remain relatively stable without being pushed by force.

[0041] Remove the electrode pads 5 on the defibrillator 3 and snap them onto the card seats 8 on the front support frame 7. At this time, the electrode pads 5 are inclined and restricted above the equipment rack 1. The staff can complete the conductive paste application and charging operations without holding the electrode pads 5 by hand, which is convenient for the staff to control the patient to lie flat during this period and open the patient's clothes in preparation for defibrillation, greatly improving the first aid efficiency.

[0042] Embodiment 2: On the basis of Embodiment 1, a conductive paste brushing mechanism is also disclosed, and its specific structure is as follows: On the other side of the steering support 6, there is a conductive paste brushing mechanism for automatically applying conductive paste on the surface of the electrode pads 5; the conductive paste brushing mechanism includes a rear support frame 11 rotatably connected to the steering support 6, a lifting and moving seat 13 is slidably connected to the rear support frame 11, and a chuck 14 is rotatably installed in the lifting and moving seat 13; a piston syringe 15 for storing conductive paste is fixedly installed inside the chuck 14.

[0043] A transmission rotating rod 12 is fixedly connected between the rear support frame 11 and the front support frame 7, and the rotation planes of the front support frame 7 and the rear support frame 11 are perpendicular to the rotation plane of the steering support 6.

[0044] An electric telescopic rod 16 is installed outside the piston syringe 15, and the output end of the electric telescopic rod 16 is connected to the piston rod inside the piston syringe 15; the injection port of the piston syringe 15 corresponds to the position of the electrode pad 5 snap-connected to the card seat 8.

[0045] A lead screw 17 is rotatably connected to the outside of the rear support frame 11, and an internally threaded block 18 is sleeved on the outside of the lead screw 17, and the internally threaded block 18 is fixedly connected to the outside of the lifting and moving seat 13.

[0046] A rotating mechanism for driving the chuck 14 to rotate reciprocally to expand the conductive paste application range of the piston syringe 15 is arranged on the lifting and moving seat 13.

[0047] The rotating mechanism includes a side frame 19 fixedly connected to the bottom of the lifting and moving seat 13. A rotating wheel 20 is rotatably connected to the side of the side frame 19, and the surface of the rotating wheel 20 is in mutual contact with the inner side of the frame of the rear support frame 11. Two rotating wheels 20 are symmetrically arranged at the bottom of the lifting and moving seat 13 with respect to the center of the chuck 14. A driving column 21 is coaxially connected to the sides of the two rotating wheels 20. A sliding ring 22 is movably sleeved outside the driving column 21. A disc seat 23 is coaxially connected to the bottom surface of the chuck 14 along the rotation direction. A transmission telescopic support rod 24 is fixedly connected to the disc seat 23, and the transmission telescopic support rod 24 is rotatably connected to the surface of the sliding ring 22.

[0048] An arc-shaped groove 25 is obliquely formed on the outer surface of the driving column 21 along the circumferential direction. A sliding rod 26 is engaged and slidably connected in the arc-shaped groove 25, and the sliding rod 26 is fixedly connected to the inner side wall of the sliding ring 22. The driving column 21 is offset from the center and is located below the disc seat 23.

[0049] The front support frame 7 and the rear support frame 11 are interconnected by a transmission rotating rod 12. When controlling the front support frame 7 to rotate and unfold, the rear support frame 11 rotates and unfolds synchronously. At this time, the injection port position of the piston syringe 15 on the rear support frame 11 corresponds to the position of the electrode plate 5. The motor on the rear support frame 11 is operated to control the rotation of the lead screw 17. The lead screw 17 is threadedly connected to the internally threaded block 18. Under the thread transmission, the internally threaded block 18 moves along the direction of the lead screw 17. The internally threaded block 18 drives the lifting and moving seat 13 to be engaged and move synchronously on the rear support frame 11. During the longitudinal movement of the lifting and moving seat 13, the piston syringe 15 is driven to move synchronously. When the piston syringe 15 and the electrode plate 5 rotate on the steering support 6, they are both inclined above the equipment frame 1. The piston syringe 15 is obliquely arranged above the side of the electrode plate 5, so that the conductive paste extruded from the piston syringe 15 can better cover the surface of the electrode plate 5. The electric telescopic rod 16 on the piston syringe 15 is operated to push the piston rod to move. The piston rod extrudes the conductive paste stored in the piston syringe 15, so that the conductive paste is extruded to the outside and applied to the surface of the electrode plate 5. The piston syringe 15 moves with the lifting and moving seat 13, and can apply the conductive paste on the surface of the electrode plate 5 from top to bottom.

[0050] During the movement of the lifting and moving seat 13, the rotating wheel 20 below it rolls on the front support frame 7. The rotation of the rotating wheel 20 drives the driving column 21 to rotate synchronously. At this time, the sliding rod 26 is engaged in the arc-shaped groove 25 opened outside the driving column 21 and moves along the direction of the arc-shaped groove 25, so that the sliding rod 26 reciprocates outside the driving column 21. The sliding rod 26 controls the sliding ring 22 to reciprocate synchronously. At this time, the transmission telescopic support rod 24 connected to the side of the sliding ring 22 expands and contracts independently and rotates correspondingly. The transmission telescopic support rod 24 drives the disc seat 23 to rotate. The disc seat 23 drives the chuck 14 to rotate synchronously, thereby controlling the piston syringe 15 in the chuck 14 to rotate reciprocally within a certain range. The piston syringe 15 can rotate reciprocally horizontally while moving longitudinally, expanding the smearing range of the conductive paste, so that the conductive paste can be evenly smeared on the surface of the electrode sheet 5, maintaining the defibrillation and heart rhythm restoration effect of the device.

[0051] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0052] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An emergency device for patients with arrhythmia, comprising a device rack (1) and a defibrillator (3) stored in the device rack (1) for first aid of patients with arrhythmia. An electrode patch (5) is connected to the defibrillator (3) through a cable (4). It is characterized in that: A drawer plate (2) is slidably connected to the equipment rack (1), and the defibrillator (3) is placed on the drawer plate (2); The upper end surface of the equipment frame (1) is rotatably connected to a steering support (6), one side of the steering support (6) is provided with a supporting mechanism for supporting the electrode sheet (5) to assist in placing and charging the electrode sheet, and the other side of the steering support (6) is provided with a conductive paste coating mechanism for automatically coating the surface of the electrode sheet (5) with conductive paste.

2. The first-aid device for patients with arrhythmia according to claim 1, wherein: The support mechanism comprises two front support frames (7) symmetrically rotatably mounted on a steering support (6), a clamping seat (8) being fixedly mounted on the front support frame (7), and the electrode sheet (5) can be clamped and placed on the clamping seat (8).

3. The first aid device for arrhythmia patients according to claim 2, characterized in that: The side of the front support frame (7) is fixedly connected with a positioning frame (9), and the side of the positioning frame (9) is embedded with a magnetic sheet (10). When the two symmetrically distributed front support frames (7) are rotated to a vertical state, the two positioning frames (9) on the side thereof are abutted against each other, and the two abutted positioning frames (9) are magnetically adsorbed by the magnetic sheet (10).

4. The first-aid device for arrhythmia patients according to claim 1, wherein: The conductive paste brushing mechanism comprises a rear support frame (11) rotatably connected to a steering support (6), a lifting and moving seat (13) being slidably connected to the rear support frame (11), and a chuck (14) being rotatably mounted in the lifting and moving seat (13); A piston syringe (15) for storing conductive paste is fixedly installed inside the chuck (14).

5. The first-aid device for arrhythmia patients according to claim 4, characterized in that: A transmission rotating rod (12) is fixedly connected between the rear supporting frame (11) and the front supporting frame (7), and the rotating planes of the front supporting frame (7) and the rear supporting frame (11) are perpendicular to the rotating plane of the steering support (6).

6. The first aid device for arrhythmia patients according to claim 4, characterized in that: An electric telescopic rod (16) is installed outside the piston injection cylinder (15), and the output end of the electric telescopic rod (16) is connected to the piston rod inside the piston injection cylinder (15); The injection port of the piston injection cylinder (15) corresponds to the position of the electrode sheet (5) that is snap-connected to the holder (8).

7. The first aid device for arrhythmia patients according to claim 4, characterized in that: The rear support frame (11) is externally rotatably connected to a screw rod (17), an external thread sleeve of the screw rod (17) is provided with an internal thread block (18), and the internal thread block (18) is fixedly connected to the outside of the lifting and moving seat (13).

8. The first-aid device for patients with arrhythmia according to claim 7, wherein: The lifting and moving seat (13) is provided with a rotating mechanism for driving the chuck (14) to reciprocate and thereby expand the range of the piston injection cylinder (15) for applying the conductive paste.

9. The first-aid device for arrhythmia patients according to claim 8, wherein: The rotating mechanism comprises a side frame (19) fixedly connected to the bottom of the lifting and moving seat (13), the side of the side frame (19) being rotatably connected to a rotating wheel (20), the surface of the rotating wheel (20) being in contact with the inner side of the frame of the rear support frame (11); Two rotating wheels (20) are symmetrically arranged at the bottom of the lifting and moving seat (13) about the center of the chuck (14), and the sides of the two rotating wheels (20) are coaxially connected to a driving column (21), and the outer movable sleeve of the driving column (21) is provided with a slip ring (22); The bottom surface of the chuck (14) is coaxially connected to a disc seat (23) along the rotation direction, and a transmission telescopic support rod (24) is fixedly connected to the disc seat (23), and the transmission telescopic support rod (24) is rotationally connected to the surface of the slip ring (22).

10. The first aid device for arrhythmia patients according to claim 9, wherein: An arc-shaped groove (25) is obliquely formed on the outer surface of the driving column (21) along the circumferential direction. A sliding rod (26) is engaged and slidably connected in the arc-shaped groove (25), and the sliding rod (26) is fixedly connected to the inner side wall of the sliding ring (22). The driving column (21) is eccentrically located below the disc seat (23).

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