Percussion type current generating device based on magnetoelectric induction

Abstract

The utility model discloses a percussion type current generating device based on magnetoelectric induction. Comprising a shell, a magnetoelectric igniter in threaded connection with the interior of the shell, a push rod body in sliding connection with the interior of the shell, a button in threaded connection with the push rod body, a button cover in threaded connection with the shell, a first cylinder in clearance fit connection with one end in the push rod body, and a second cylinder in clearance fit connection with the other end in the push rod body, the push rod body comprises a first cylinder and a second cylinder, the two ends of the release spring are fixedly connected to the first cylinder and the second cylinder respectively, the return spring is clamped outside the push rod body, the lever is connected with the push rod body through a riveting structure, the magnetoelectric igniter comprises an iron core, the lever is connected with the iron core in an interference fit mode, and the iron core is located in the center of the magnetoelectric igniter. The push rod body is pushed to slide in the shell, the lever is pushed to move, the iron core is driven to swing, and current is generated. The device is small in size and light in weight, can be efficiently integrated in a missile system with limited space, and meets the requirements of modern military equipment for space and weight.

Description

TECHNICAL FIELD

[0001] The utility model relates to current generating device technical field especially is based on the ignition type current generating device of magnetoelectricity induction. BACKGROUND

[0002] In the modern military equipment system, the launch guidance device is undoubtedly one of the core components of the missile system. It plays the role of "nerve center" in the whole process of missile launch, and plays a decisive command and control role in the key tasks such as accurate launch of missile, flight trajectory control and accurate attack on target. And this series of complex and high-precision task execution is extremely dependent on stable, continuous and reliable power supply.

[0003] Before a certain type of equipment launches a missile, the ground battery is activated to provide power for the launch guidance device, which is a key pre-step for the smooth start of the whole launch process. Traditionally, the power generating device mainly relies on lithium batteries to meet the current demand of the launch guidance device. However, the existing lithium battery technology has exposed many significant defects when dealing with the stringent requirements of the missile system. First of all, the lithium battery is bulky. In the missile system, the space layout is extremely compact and valuable, and every inch of space is carefully designed to accommodate various key components. The larger volume of lithium battery makes it difficult to integrate effectively under such space constraints, which may force the entire system layout to be adjusted, even affecting the reasonable placement of other important parts, thereby negatively affecting the overall performance of the missile system. Secondly, the high cost is another serious problem faced by lithium batteries. The production process of high-performance lithium batteries is complex, the cost of raw materials is high, and the research and development investment is huge. This makes its production cost high, directly increasing the overall cost of the missile system. In the field of military equipment, cost not only relates to the procurement budget of equipment, but also affects the large-scale deployment of equipment and the construction of subsequent maintenance support system. Excessive cost may limit the popularization and continuous development of equipment. Thirdly, the service life of lithium battery is limited. In actual use, the missile system often faces extreme harsh environments such as high temperature, high pressure and strong vibration. Under these extreme conditions, the chemical properties of lithium battery may change, resulting in battery capacity attenuation, charge and discharge efficiency reduction, and even sudden failure. This undoubtedly greatly reduces the reliability of the system and increases the risk of missile launch failure, which may cause serious consequences at critical moments. Finally, the safety problem is the fatal weakness of lithium battery. In military operations, the missile system may be attacked by the enemy, accidentally hit or in a high-temperature environment. Lithium batteries are extremely prone to explosion or fire when subjected to these external shocks or in a high-temperature environment. Once such a situation occurs, not only will it directly damage the launch guidance device and cause the task to fail, but it may also trigger a chain reaction, causing serious harm to surrounding equipment and personnel and endangering the safety of the entire military operation.

[0004] In conclusion, existing lithium battery technology can no longer meet the stringent power requirements of missile launch guidance systems. Therefore, there is an urgent need for a novel power supply device that is small in size, low in cost, and capable of providing a sufficiently large current to ensure the reliable operation of the launch guidance system under various complex operating conditions, thereby providing a solid power guarantee for the effective use of modern military equipment. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a triggering current generating device based on magnetoelectric induction, so as to solve the problems of large size and high cost of existing power generation devices.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A magnetoelectric induction-based firing current generating device includes a housing, a magnetoelectric igniter threadedly connected to the housing, a push rod slidably connected to the housing, a button threadedly connected to the push rod, a button cover threadedly connected to the housing, a first cylinder with clearance fit connected to one end of the push rod, a second cylinder with clearance fit connected to the other end of the push rod, a release spring fixedly connected to the first cylinder and the second cylinder at their two ends respectively, a return spring locked outside the push rod, and a lever connected to the push rod via a riveting structure. The magnetoelectric igniter includes an iron core, and the lever is interference-fitted with the iron core. The iron core is located at the center of the magnetoelectric igniter. Pressing the button pushes the push rod to slide within the housing, moves the lever, and drives the iron core to swing, generating current.

[0008] More preferably, the housing includes a handle, a cover plate threaded to the handle, and a top cover plate threaded to the handle. The handle is provided with a sliding groove, and a circular hole is opened at one end of the handle. The size of the circular hole matches the outer diameter of the button, and the button is movably connected to the handle.

[0009] More preferably, the push rod body is a hollow body, including a push rod and a cylindrical pin, and the cylindrical pin is slidably connected to the sliding groove.

[0010] Further preferably, the magnetoelectric igniter also includes a winding, an upper plate, a lower plate, an upper pole shoe, a permanent magnet, a lower pole shoe, a pin, and a tapered pin. The winding is made of tightly wound wires. After the wires of the winding are wrapped with insulating varnish or other insulating materials, they are nested or wrapped and fixed on specific slots or protrusions in the upper and lower pole shoes. The iron core passes through the central hole of the winding. The winding, the upper or lower pole shoe, and the iron core are tightly fitted in the axial direction to form a complete magnetic circuit system. The permanent magnet is interference-fitted or strongly glued to the upper and lower pole shoes and is installed flush with the upper plate. The shaft of the iron core passes through a hole in the lower plate. The pin passes through corresponding holes in the lever and push rod in sequence, and the end of the pin is deformed on the push rod to form a riveting structure. The lever is connected to the iron core through the tapered pin.

[0011] More preferably, the button has an internal thread.

[0012] More preferably, the button cover covers the button and is fixed to the handle by screws, and the inner side of the button cover is provided with a groove that mates with the button.

[0013] More preferably, the button cover includes a panel fixed to the handle by screws and a button cover connected to the panel by a torsion spring. The button cover has a groove, and a sealing ring is engaged in the groove.

[0014] In a further preferred embodiment, the lower end of the first cylinder has a groove a, the upper end of the second cylinder has a groove b, the two ends of the release spring are respectively fixed in groove a and groove b, and the first cylinder, the release spring, and the second cylinder are placed sequentially in the push rod body.

[0015] More preferably, both the return spring and the release spring are made of carbon spring steel wire, with the length of the return spring being 251~252 mm and the length of the release spring being 263~264 mm.

[0016] More preferably, when the load is 6 ohms, the peak output current of the device is ≥370mA, and the pulse width at 200mA is ≥4ms; the device has a lifespan of ≥5000 uses.

[0017] The beneficial effects of adopting the above technical solution are as follows:

[0018] This invention utilizes the principle of magnetoelectric induction to convert mechanical energy into electrical energy, avoiding the risk of battery failure in extreme environments and ensuring the stability and reliability of the launch guidance device. The device is small in size and lightweight, enabling efficient integration into space-constrained missile systems, meeting the stringent space and weight requirements of modern military equipment. Employing explosion-proof materials and structures, it can operate safely in high-risk environments, reducing potential safety hazards. The device can output a peak current ≥370mA under a 6-ohm load, with a pulse width ≥4ms at 200mA, meeting the high current requirements of the launch guidance device. Designed for ≥5000 uses, it has a long service life, reducing maintenance and replacement costs. With its sealing ring, it possesses excellent waterproof performance, enabling normal operation in humid or harsh environments. Attached Figure Description

[0019] Figure 1 This is a schematic cross-sectional view of the overall structure of this utility model;

[0020] Figure 2 yes Figure 1 Schematic diagram of the shell structure at point A from a mid-angle perspective;

[0021] Figure 3 yes Figure 1 Schematic diagram of the button cover structure at point B from a mid-view angle;

[0022] Figure 4 This is a partial cross-sectional view of the present invention;

[0023] Figure 5 This is a side view of the present invention;

[0024] Figure 6 This is a cross-sectional view of the magnetoelectric igniter of this utility model;

[0025] Figure 7 This is a partial sectional view of the magnetoelectric lighter of this utility model;

[0026] Figure 8 This is a schematic diagram showing the positional relationship between the iron core and the conical pin of the magnetoelectric lighter of this utility model;

[0027] Figure 9 This is a schematic diagram of the push rod body of this utility model;

[0028] Figure 10 This is a top view of the push rod body of this utility model;

[0029] Figure 11 This is a cross-sectional view of the push rod of this utility model;

[0030] Figure 12 This is a schematic diagram of the first cylindrical structure of this utility model;

[0031] Figure 13 This is a schematic diagram of the second cylindrical structure of this utility model;

[0032] Figure 14 This is a schematic diagram of the button structure of this utility model;

[0033] Figure 15 This is a partial sectional view of the button cover of this utility model;

[0034] Figure 16 This is a schematic diagram illustrating the working principle of this utility model.

[0035] In the diagram: 1-Shell; 11-Handle; 12-Side cover; 13-Top cover; 2-Magnetic-electric lighter; 21-Iron core; 22-Winding; 23-Upper plate; 24-Lower plate; 25-Upper pole shoe; 26-Permanent magnet; 27-Lower pole shoe; 28-Pin; 29-Tapered pin; 3-Push rod; 31-Push rod; 32-Cylindrical pin; 4-Button; 5-Button cover; 51-Panel; 52-Button cover; 53-Sealing ring; 54-Torsion spring; 6-First cylinder; 61-Groove a; 7-Second cylinder; 71-Groove b; 8-Release spring; 9-Return spring; 10-Lever. Detailed Implementation

[0036] To make the features and advantages of this utility model more apparent and understandable, the technical solution will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Example

[0037] The materials of each component of this utility model are as follows:

[0038] Table 1. Materials of each component of this utility model

[0039] Parts Material Quantity Cylinder Aluminum 2A12-T4 / CB 2053A-2008 1 Cover plate Aluminum 2A12-T4 / CB 2053A-2008 1 Handle body Aluminum 2A12-T4 / CB 2053A-2008 1 Top cover plate Polytetrafluoroethylene rod 1 Button Steel 45-GB / T 699-1999 1 Return spring Carbon spring wire 1-65-A-GB / T 4357-2009 1 Release spring Carbon spring wire 1-65-A-GB / T 4357-2009 1 Permanent magnet Permanent magnet LNG52-JB 1588-75 2 Iron core Pure iron plate DT4-GB / T 6983-2008 1 Lever Copper plate H62 cold drawn T2-8-GB / T 2040-2008 1 Lower pole shoe Pure iron plate DT4-GB / T 6983-2008 1 Pin Steel 45-GB / T 699-1999 1 Push rod Steel 45-GB / T 699-1999 1 Cylinder pin Standard pin Ø3x15-GB / T 119.1-2000 1 Torsion spring Carbon spring wire 0.6-65-A-GB 4360-84 1 Button cover Aluminum 2A12-T4 / CB 2053A-2008 1 Panel Aluminum 2A12-T4 / CB 2053A-2008 1 Cylinder pin Standard pin Ø2x20-A-GB / T 119.1-2000 1 Sealing ring Compound rubber-1142-HG4-407-79 1 Upper coil framework Reinforced polypropylene 1 Lower pole shoe Pure iron plate DT4-GB / T 6983-2008 1 Pin Steel 45-GB / T 699-1999 1 Push rod Steel 45-GB / T 699-1999 1 Cylinder pin 2 Standard pin Ø3x15-GB / T 119.1-2000 1 Torsion spring Carbon spring wire 0.6-65-A-GB 4360-84 1 Button cover Aluminum 2A12-T4 / CB 2053A-2008 1 Panel Aluminum 2A12-T4 / CB 2053A-2008 1 Cylinder pin Standard pin Ø2x20-A-GB / T 119.1-2000 1 Sealing ring Compound rubber-1142-HG4-407-79 1 Upper coil framework Reinforced polypropylene 1 Upper plate Stainless steel 0Cr18Ni9-III-GB 3280-2007 1 Bearing Copper H62-Y2-2-GB / T 2040-2008 2 Lower plate Stainless steel 0Cr18Ni9-III-GB 3280-2007 1 Upper pole shoe Pure iron plate DT4-GB / T 6983-2008 1 Gap plate Copper H62-Y2-2-GB / T 2040-2008 1

[0040] The auxiliary materials include: 1.4×10 copper rivets, high-temperature shielded wire, Ø1 fiber sheath, de-alcoholized single-unit room temperature vulcanizing silicone rubber, single-package room temperature curing silicone rubber, 0.28 insulating varnish, QZ-0.35 polyester enameled copper wire, 1×0.4 soft polyvinyl chloride tube, shellac varnish, and C30-11 alkyd baking insulating varnish. Example

[0041] like Figure 1-15As shown, this utility model provides a trigger-type current generating device based on magnetoelectric induction, including a housing 1, a magnetoelectric lighter 2 threadedly connected to the housing 1, a push rod 3 slidably connected to the housing 1, a button 4 threadedly connected to the push rod 3, a button cover 5 threadedly connected to the housing 1, a first cylinder 6 with clearance fit connected to one end of the push rod 3, a second cylinder 7 with clearance fit connected to the other end of the push rod 3, a release spring 8 with its two ends fixedly connected to the first cylinder 6 and the second cylinder 7 respectively, a return spring 9 locked outside the push rod 3, and a lever 10 connected to the push rod 3 by a riveting structure. The magnetoelectric lighter 2 includes an iron core 21, and the lever 10 is interference-fitted with the iron core 21. The iron core 21 is located at the center of the magnetoelectric lighter. Pressing the button 4 pushes the push rod 3 to slide within the housing 1, which in turn moves the lever 10, driving the iron core 21 to swing and generate current.

[0042] The housing 1 includes a handle 11, a side cover plate 12 threaded to the handle 11, and a top cover plate 13 threaded to the handle 11, forming a sealed structure. The handle 11 and the side cover plate 12 are made of robust aluminum alloy to ensure the device's durability in various environments. The handle 11 has grooves corresponding to components such as the magnetoelectric igniter 2, the push rod 3, and the lever 10. A sliding groove 111 is provided on the handle 11, and a circular hole is formed at one end of the handle 11. The size of the circular hole matches the outer diameter of the button 4, and the button 4 is movably connected to the handle 11. Both the handle 11 and the side cover plate 12 are coated with A04-60 military green amino semi-gloss baked enamel paint.

[0043] The magnetoelectric igniter 2 is the core of the device, comprising an iron core 21, a winding 22, an upper plate 23, a lower plate 24, an upper pole piece 25, a permanent magnet 26, a lower pole piece 27, a pin 28, and a tapered pin 29. The winding 22 is typically made of tightly wound wire, and its connection to the upper pole piece 25 and the lower pole piece 27 is crucial. Winding 22 is made by smoothly winding 252 turns of polyester enameled copper wire Q7-0.35 on the coil frame with an HR=3.5+0.05Ω (20℃). The total height after winding should not exceed the wire frame. It is wrapped with two layers of insulating varnish and bonded with shellac. The insulating varnish is then impregnated with C30-11 alkyd and dried. The insulation resistance of the winding should be greater than 1.5MΩ. Generally, the conductors of winding 22 are wrapped with insulating varnish or other insulating materials and then fixed to specific slots or protrusions on the upper pole shoe 25 and lower pole shoe 27 by nesting or winding to ensure that they do not shift during operation, thereby stably inducing changes in the magnetic field. The iron core 21 is demagnetized and surface treated with Fe / Ep.Zn12.c5C. The iron core 21 passes through the central hole of winding 22. The three are tightly fitted axially to form a complete magnetic circuit system. The iron core 21 provides a low-resistivity path for the magnetic lines of force, and the windings 22 are distributed around the iron core 21 to effectively induce an electromotive force when the magnetic flux of the iron core 21 changes. The permanent magnet 26 is a key component in generating the magnetic field of the magnetoelectric lighter. Two permanent magnets 26 are ground simultaneously, and are not magnetized immediately after grinding (magnetization occurs during assembly). Pitting and chipping are not permitted. Its connection to the upper pole shoe 25 and lower pole shoe 27 is typically achieved through interference fit or strong adhesive bonding to ensure that the permanent magnet 26 does not loosen or shift during operation, thus ensuring the stability and uniformity of the magnetic field. The lower pole shoe 27 has a Fe / Ep.Zn12.c5C surface treatment. To allow the magnetic lines of force to pass more effectively through the upper plate 23, the permanent magnet 26 is installed flush with the upper plate 23. This involves precise machining processes to ensure surface flatness and tight fit, reduce magnetic resistance, and improve magnetic energy utilization. The shaft φ6 of the iron core 21 passes through a hole in the lower plate 24. This connection not only positions the iron core 21 but also tightly integrates the lower plate 24 with the entire magnetic circuit system. During actual installation, auxiliary positioning and fixing measures are employed, such as applying lubricating oil or fastening adhesive to the mating surfaces of the shaft and hole, to ensure smooth rotation of the iron core 21 and its stability in both the axial and radial directions. The lower plate 24, through its close contact with the permanent magnet and the upper and lower pole shoes, provides structural support for the entire magnetoelectric igniter, ensuring the relative position stability of each component under various operating conditions. The lever 10 is mounted on the iron core 21 and connected via a tapered pin 29 φ2×16, whose small end is inserted into the mounting hole of the iron core 21. The tapered pin 29 precisely positions the lever 10 and the iron core 21, preventing relative displacement during operation.The fit between the tapered pin 29 and the mounting hole needs to be tight, usually using an interference fit or a transition fit, to ensure the reliability of the connection. One end of the pin 28 is riveted to the lever 10. The pin 28 is used to transmit the force from the release spring. Through the riveting process, the pin 28 and the lever 10 form a solid whole, ensuring that the force can be effectively transmitted from the release spring to the lever 10, thereby driving the iron core 21 to rotate, realizing the change of magnetic flux and the generation of induced current.

[0044] Push rod body 3: The push rod body has a hollow structure, consisting of a push rod 31 and a cylindrical pin 32. The push rod 31 has external threads and is threadedly connected to the button 4. The push rod body 3 is slidably connected to the housing 1, and can move forward when the button 4 is pressed, pushing the lever 10. The top of the assembled cylindrical pin 32 is flush with the cylindrical surface of the push rod 31. The push rod 31 is galvanized with BWJ458-75.

[0045] Button 4: Button 4 is connected to the push rod body 3 via an internal thread, ensuring good operability. The outer diameter of button 4 matches the size of the circular hole inside the housing 1, ensuring flexible movement. The surface treatment of button 4 is Fe / Ep.Zn12.c5C.

[0046] Button cover 5: Covers the button 4 and is fixed to the handle 11 with screws. The inner side of the button cover 5 has a groove that mates with the button 4, ensuring the stability of the button during operation. The button cover 5 includes a panel 51 fixed to the handle 11 with screws, and a button cover 52 connected to the panel 51 by a torsion spring 54. The button cover 52 has a groove, and a sealing ring 53 is fitted into the groove to ensure waterproofing and sealing. The button cover is made of high-strength plastic to ensure wear resistance and good sealing performance. The panel 51 is sprayed with A04-60 military green amino semi-gloss baked enamel paint.

[0047] First cylinder 6 and second cylinder 7: The lower end of the first cylinder 6 has a groove a61, and the upper end of the second cylinder 7 has a groove b71. The two ends of the release spring 8 are fixed in the groove a61 and the groove b71 respectively. The first cylinder 6, the release spring 8 and the second cylinder 7 are placed in the push rod body 3 in sequence.

[0048] Release spring 8 and return spring 9: Release spring 8 and return spring 9 are made of carbon spring steel wire. Release spring 8 has a total of 12 coils, an unfolded length of 263.8 mm, and 10 effective coils. Return spring 9 has a total of 5 coils, an unfolded length of 251.2 mm, and 3 effective coils. Both have undergone low-temperature tempering and have their ends ground flat to ensure stable performance.

[0049] Lever 10: Connected to the push rod body 3 via a riveting structure, the lever is interference-fitted with the iron core 21 to ensure effective force transmission during operation. Lever 10 undergoes DH passivation treatment. Example

[0050] When using this device, press button 4 with your thumb. Button 4 causes the threaded push rod 3 to move forward along the sliding groove inside the handle 11, compressing the return spring 9. Initially, the lever pin on lever 10 remains stationary until the force of the release spring 8 overcomes the magnetic force, at which point the release spring 8 is also compressed. When the force of the release spring 8 exceeds the magnetic force of the magnet, the release spring 8 pushes the lever pin forward, causing the iron core 21 to swing via lever 10. Figure 16 Since the iron core 21 is located in the center of the magnetoelectric igniter 2, its swinging motion changes the direction of the magnetic field lines in the coil, thereby generating an induced current in the coil. This induced current ignites the ignition head of the ground battery, thus activating the ground battery. When the button 4 is released, the iron core 21 returns to its original position under the action of the return spring 9, preparing for the next firing. Example

[0051] The magnetoelectric induction-based impulse current generating device has the following performance indicators:

[0052] Output current: When the load is 6 ohms, the peak output current is ≥370mA, and the pulse width at 200mA is ≥4ms, which can provide sufficient current for the ground battery.

[0053] Uses: ≥5000 times, good durability.

[0054] Sealing performance: It is waterproof and unaffected by water.

[0055] Storage period: It can be stored for more than 6 years and will still function normally after storage.

[0056] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A trigger-type current generating device based on magnetoelectric induction, characterized in that, Includes a housing (1), a magnetoelectric lighter (2) threaded into the housing (1), a push rod (3) slidably connected into the housing (1), a button (4) threaded onto the push rod (3), a button cover (5) threaded onto the housing (1), a first cylinder (6) with clearance fit connected to one end of the push rod (3), a second cylinder (7) with clearance fit connected to the other end of the push rod (3), and two ends fixedly connected to the first cylinder (6) and the second cylinder (7) respectively. 7) The release spring (8), the return spring (9) locked outside the push rod body (3), and the lever (10) connected to the push rod body (3) by a riveting structure, wherein the magnetoelectric lighter (2) includes an iron core (21), the lever (10) is interference-fitted with the iron core (21), the iron core (21) is located at the center of the magnetoelectric lighter, the button (4) is pressed, the push rod body (3) is pushed to slide in the housing (1), the lever (10) is pushed to move, the iron core (21) is driven to swing, and an electric current is generated.

2. The percussion current generating device according to claim 1, characterized in that, The housing (1) includes a handle (11), a side cover plate (12) threaded to the handle (11), and a top cover plate (13) threaded to the handle (11). A sliding groove (111) is provided on the handle (11), and a round hole is opened at one end of the handle (11). The size of the round hole matches the outer diameter of the button (4), and the button (4) is movably connected to the handle (11).

3. The percussion current generating device according to claim 2, characterized in that, The push rod body (3) is a cavity body, including a push rod (31) and a cylindrical pin (32), and the cylindrical pin (32) is slidably connected to the sliding groove (111).

4. The percussion current generating device according to claim 1, characterized in that, The magnetoelectric igniter (2) further includes a winding (22), an upper plate (23), a lower plate (24), an upper pole piece (25), a permanent magnet (26), a lower pole piece (27), a pin (28), and a tapered pin (29). The winding (22) is made of tightly wound wire. After the wire of the winding (22) is wrapped with insulating varnish or insulating silk, it is nested or wrapped and fixed on specific slots or protrusions of the upper pole piece (25) and the lower pole piece (27). The iron core (21) passes through the center hole of the winding (22). The winding (22), the upper pole piece (25) or the lower pole piece (27) are connected. The pole shoe (27) and the iron core (21) are tightly fitted in the axial direction to form a complete magnetic circuit system; the permanent magnet (26) is interference-fitted or strongly bonded to the upper pole shoe body (25) and the lower pole shoe (27), and the permanent magnet (26) is installed flush with the upper plate body (23); the shaft of the iron core (21) passes through the hole on the lower plate body (24); the pin (28) passes through the corresponding holes on the lever (10) and the push rod body (3) in sequence, and deforms the end of the pin on the push rod body (3) to form a riveting structure; the lever (10) is connected to the iron core (21) through the tapered pin (29).

5. The percussion current generating device according to claim 1, characterized in that, The button (4) has an internal thread.

6. The percussion current generating device according to claim 2, characterized in that, The button cover (5) covers the button (4) and is fixed to the handle (11) by screws. The inner side of the button cover (5) is provided with a groove that matches the button.

7. The percussion current generating device according to claim 2, characterized in that, The button cover (5) includes a panel (51) fixed to the handle (11) by screws and a button cover (52) connected to the panel (51) by a torsion spring (54). The button cover (52) has a groove and a sealing ring (53) is installed in the groove.

8. The percussion current generating device according to claim 1, characterized in that, The first cylinder (6) has a groove a (61) at its lower end and the second cylinder (7) has a groove b (71) at its upper end. The two ends of the release spring (8) are fixed in the groove a (61) and the groove b (71) respectively. The first cylinder (6), the release spring (8) and the second cylinder (7) are placed in the push rod body (3) in sequence.

9. The percussion current generating device according to any one of claims 1 to 8, characterized in that, Both the return spring (9) and the release spring (8) are made of carbon spring steel wire. The length of the return spring (9) is 251.2 mm and the length of the release spring (8) is 263.8 mm.

10. The percussion current generating device according to any one of claims 1 to 8, characterized in that, When the load is 6 ohms, the device has a peak output current of ≥370mA and a pulse width of ≥4ms at 200mA; the device has a lifespan of ≥5000 uses.

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