Electromagnetic pusher device with self-unlocking reset function and use method thereof

Abstract

The application discloses an electromagnetic pusher device with self-unlocking reset function and a use method thereof, which comprises a shell, a cavity is arranged in the shell, and the cavity is provided with a first arc surface groove; a pusher connecting rod is arranged at the axis position of the shell body and is provided with a second arc surface groove; an electric drive is arranged at one end of the pusher connecting rod; a coil is sleeved at the joint of the electric drive and the pusher connecting rod; a sliding block is gap-fitted and sleeved on the pusher connecting rod and is arranged close to the coil and is provided with a third arc surface groove; a spring is connected with the end face of the shell body at one end and is connected with the sliding block at the other end, and the end of the spring away from the electric drive is arranged; and a limiting steel ball is arranged between the sliding block and the pusher connecting rod. The electromagnetic energy is used to complete the self-unlocking and pusher operation, the target load can be quickly released and separated, the separation kinetic energy is adjustable and controllable, and the energy is renewable.

Description

Technical Field

[0001] This invention relates to the fields of mechanical manufacturing and electromagnetic ejection devices, and more specifically, to an electromagnetic ejection device with a self-unlocking and reset function and its usage method. Background Technology

[0002] Currently, point-separation devices are used when two separated entities are connected at multiple points on the contact surface. These devices at each connection point are primarily used in the aerospace and aviation fields, with a representative example being satellite-rocket separation during space launches. This involves the separation of the satellite and other payloads from the launch vehicle at a certain relative velocity after the launch vehicle reaches its designated orbit and velocity and undergoes attitude control. Common separation methods include ejection-type separation (using compressed helical springs, ejectors, and pneumatic actuators), braking-type separation (using the retro-thrust generated by the pressurized gas discharged from the propellant tanks of the final-stage auxiliary thrust rocket), and rotational multi-satellite separation (achieved through axial spring separation force and rotational centrifugal force).

[0003] The ejection-type separation method converts potential energy into initial kinetic energy for the payload. This potential energy is stored through compression of helical springs or the propellant gases from explosive bolts. Separating the satellite from the rocket using explosive bolts has been a common and widely used separation method in the aerospace industry since the 1950s. Each explosive bolt resembles an ordinary bolt but contains explosives and an igniter. During separation, the explosives detonate, causing the shear lock to shear or break along the bolt's weakening groove, thus unlocking the two separated components. There are many types of explosive bolts, including slotted, shear pin, steel ball, and pollution-free explosive bolts. The advantages of this device are high load-bearing capacity, simple structure, reliable operation, and ease of use. In addition, braking separation technology using auxiliary thrust rockets in the final stage is also a common method for attitude control and separation of large-mass payloads.

[0004] With the rapid development of aerospace technology, especially the breakthrough in reusable rocket launch technology, the cost of rocket launch has been greatly reduced, enabling more civilian and commercial small satellites to be launched into space. As a result, the demand for reusable and testable separation devices has become more urgent.

[0005] In existing technologies, ejection-type separation methods achieved through compression helical springs or similar means lack reusability or have poor reusability of the energy-providing units. Braking-type separation technology requires chemical fuels, posing safety risks, and this energy source is non-renewable in space. Furthermore, while commonly used compression helical spring and gas-fired ejection devices offer advantages such as high reliability and light weight, their initial velocity is completely unadjustable. This presents shortcomings in meeting the diverse environments and mission requirements of future space launches and space applications, and also presents issues with the ability to connect and separate systems (i: uncontrollable separation kinetic energy; ii: high difficulty in reuse; iii: incompatibility between unlocking and separation functions).

[0006] In summary, at least one of the following technical problems exists:

[0007] Separation kinetic energy is uncontrollable;

[0008] High difficulty in reuse;

[0009] The unlock and detach functions are incompatible. Summary of the Invention

[0010] The main objective of this invention is to provide an electromagnetic push-launch device with self-unlocking and reset function and its usage method, so as to solve at least one of the technical problems in the prior art, such as uncontrollable separation kinetic energy, high difficulty in repeated use, and incompatibility between unlocking and separation functions.

[0011] To achieve the above objectives, according to one aspect of the present invention, an electromagnetic ejector device with a self-unlocking and reset function is provided, comprising:

[0012] The outer shell has an internal cavity with a first arc-shaped groove.

[0013] A pusher connecting rod, which is located at the axis of the housing and has a second arc-shaped groove;

[0014] An electric drive, wherein the electric drive is disposed at one end of the pusher connecting rod;

[0015] A coil, which is sleeved at the junction of the electric drive and the pusher connecting rod;

[0016] The slider, which is fitted with a clearance fit on the ejector connecting rod and is located adjacent to the coil, has a third arc-shaped groove; and

[0017] A spring, one end of which is connected to the end face of the housing, and the other end of which is connected to the slider, wherein the spring is positioned away from the electric drive end;

[0018] A limiting steel ball is located between the slider and the pusher connecting rod.

[0019] Preferably, the housing is provided with a cavity structure in accordance with the structural shape of the coil, armature, slider, spring and pusher connecting rod.

[0020] Preferably, one end of the ejector connecting rod is flexibly connected to the electric drive, and the other end of the ejector connecting rod is tightly connected to an external load.

[0021] Preferably, the slider is located on one side of the coil axis and is made of annular permanent magnet material.

[0022] Preferably, the coil is a multi-turn, multi-layer copper coil, which is made by winding flat, long copper wire, and the insulation gap material of the copper wire is polyimide.

[0023] Preferably, the armature is a silicon steel columnar structure, and the outer shell is made of epoxy resin.

[0024] Preferably, the slider is annular in shape, and the third arc-shaped groove is located on the inner side of the annular structure near the end of the coil.

[0025] Preferably, the second arc-shaped groove is disposed on the outer side of the middle section of the pusher connecting rod.

[0026] Preferably, when in the locked state, the limiting steel ball is partially located in the first arc-shaped groove and partially located in the second arc-shaped groove; when in the unlocked state, the limiting steel ball is partially located in the third arc-shaped groove.

[0027] According to another aspect of the present invention, a method of using an electromagnetic thrusting device with a self-unlocking and reset function is provided, comprising:

[0028] When the coil is not energized, the system is in the locked mode. At this time, the spring is in the initial compressed state, and the limiting steel ball extends out and is located in the first arc groove and the second arc groove, constraining the armature and the pusher connecting rod in the middle channel of the outer shell.

[0029] During the separation and release process, the system adjusts the discharge parameters according to the input requirements, the pulse power supply discharges, the coil passes a large current instantaneously, a strong magnetic field is generated inside and around the coil, the armature is subjected to a strong Lorentz force, and this force also acts on the pusher connecting rod. At the same time, the slider also compresses the spring and produces displacement under the action of electromagnetic force, and the part connected to the limiting steel ball changes from a plane to an arc-shaped groove surface.

[0030] The limiting steel ball experiences radial separation from the thrust transmitted by the pusher connecting rod. This radial component of the force pushes the steel ball to radially press against the groove surface of the slider, further pushing the slider to compress the spring and generate displacement. Under the action of the two thrusts, the limiting steel ball gradually moves into the groove of the slider's arc surface, and the movement channel of the pusher connecting rod is fully opened, thus completing the unlocking process.

[0031] The armature continues to push the ejector connecting rod axially until the load completes the ejection;

[0032] When the discharge ends, the spring resets, pushing the slider to reset. During this process, the limiting steel ball is squeezed and pushed to the reset state by the third arc groove of the slider.

[0033] The technical solution of this invention has the following technical effects:

[0034] This invention employs electromagnetic launch technology, enabling the payload to be launched at a specified initial velocity onto the separation surface. Furthermore, the device utilizes the spatial magnetic field during the electromagnetic launch process to instantly open the payload separation path, completing the self-unlocking process of the electromagnetic launch device. The device is energy-renewable, its separation kinetic energy is controllable and adjustable, and it possesses a rapid self-unlocking function, significantly improving the efficiency and capability of connection and separation. In other words, it can complete self-unlocking and launch operations using electromagnetic energy, enabling rapid response and release separation of the target payload. Its separation kinetic energy is adjustable and controllable. Simultaneously, the device's energy is renewable, and its separation and acceleration mechanisms reset after operation, allowing for repeated operation. Attached Figure Description

[0035] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0036] Figure 1 A schematic diagram of the electromagnetic thruster device with self-unlocking and reset function according to the present invention is shown;

[0037] Figure 2 It shows Figure 1 A top view of the electromagnetic thruster with self-unlocking and reset function.

[0038] The above figures include the following reference numerals:

[0039] 1. Coil; 2. Electric drive; 3. Housing; 4. Slider; 5. Spring; 6. Pusher connecting rod; 7. Limiting steel ball; 8. First arc surface groove; 9. Second arc surface groove; 10. Third arc surface groove. Detailed Implementation

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0041] like Figures 1 to 2As shown, this embodiment of the invention provides an electromagnetic ejector device with a self-unlocking and reset function, comprising: a housing 3, the housing 3 having an internal cavity and a first arc-shaped groove 8; an ejector connecting rod 6, the ejector connecting rod 6 being positioned at the axis of the housing and having a second arc-shaped groove 9; an electric drive 2, the electric drive 2 being positioned at one end of the ejector connecting rod 6; a coil 1, the coil 1 being sleeved at the junction of the electric drive 2 and the ejector connecting rod 6; a slider 4, the slider 4 being fitted onto the ejector connecting rod 6 with a clearance fit, positioned adjacent to the coil 1, and having a third arc-shaped groove 10; a spring 5, one end of the spring 5 being connected to the end face of the housing, the other end of the spring 5 being connected to the slider 4, the spring 5 being positioned at the end away from the electric drive 2; and a limiting steel ball 7, the limiting steel ball 7 being located between the slider 4 and the ejector connecting rod 6.

[0042] This embodiment includes a multi-turn, multi-layer copper coil 1, a silicon steel cylindrical armature located inside the coil 1, a G10 material ejector housing 3, an annular permanent magnet slider 4 located on one axial side of the coil 1, a spring 5 connecting the slider 4 and the unlocking mechanism housing 3, an ejector connecting rod 6, and a limiting steel ball 7. One end of the ejector connecting rod 6 is flexibly connected to the armature, and the other end is tightly connected to an external load. The spring 5 is connected to the slider 4 and the unlocking mechanism housing 3 respectively. The limiting steel ball 7 is mostly placed in the first arc-shaped groove 8 of the housing 3, and partly in the second arc-shaped groove 9 of the ejector connecting rod 6. The coil 1, armature, slider 4, spring 5, ejector connecting rod 6, and limiting steel ball 7 are all constrained by the housing 3, which is made of epoxy resin.

[0043] In this embodiment, the outer shell 3 serves to fix and connect, and the inner cavity of the outer shell 3 has a first arc-shaped groove 8; the cavity structure inside the outer shell 3 is set according to the structural shape of the coil 1, armature, slider 4, spring 5 and pusher connecting rod 6.

[0044] In this embodiment, the ejector connecting rod 6 is used for ejection. The ejector connecting rod 6 is located at the axis of the housing and has a second arc-shaped groove 9. One end of the ejector connecting rod 6 is flexibly connected to the electric drive 2, and the other end is tightly connected to an external load. The second arc-shaped groove 9 is located on the outer side of the middle section of the ejector connecting rod 6. The ejector connecting rod 6 is made of G10 high-strength composite material, has a diameter of 24mm, and has an arc-shaped groove with an arc radius of 11mm in the middle section.

[0045] In this embodiment, the electric drive 2 is used to push the ejector connecting rod 6, and the electric drive 2 is located at one end of the ejector connecting rod 6; the armature is a silicon steel columnar structure, and the outer shell 3 is made of epoxy resin. The armature has an axial length of 50mm and a diameter of 24mm, and its bottom end is approximately 20-22mm away from the bottom end of the coil 1 along the negative axial direction.

[0046] In this embodiment, coil 1 is used to generate electromagnetic force. Coil 1 is sleeved at the junction of electric drive 2 and pusher connecting rod 6. Coil 1 is a multi-turn, multi-layer copper coil 1, which is made of flat, long copper wire wound together, with polyimide as the insulation material between the copper wires. Coil 1 is made of flat, long copper wire wound together, and the flat copper wire conforms to the national standard GB / T321, with a nominal narrow side dimension of 1.25mm, a nominal wide side dimension of 2mm, a corner radius of 0.5mm, and a nominal cross-sectional area of ​​2.285mm². 2 The insulation gap material for the copper wire is polyimide. After coil 1 is wound and formed, the inner diameter is 27mm, the outer diameter is 85mm, and the axial length is 60mm.

[0047] In this embodiment, slider 4 is used in conjunction with a steel ball to lock and unlock the pusher connecting rod 6. Slider 4 is fitted onto the pusher connecting rod 6 with a clearance fit, located adjacent to coil 1, and has a third arc-shaped groove 10. Slider 4 is located on one axial side of coil 1 and is made of annular permanent magnet material. Slider 4 is annular in shape, and the third arc-shaped groove is located on the inner side of the annular structure near one end of coil 1. Slider 4 has an overall annular shape, an axial length of 45mm, an inner diameter of 54mm, an outer diameter of 94mm, and an axial positive distance of approximately 10mm from the formed coil 1. Slider 4 has a third arc-shaped groove 10 with an arc radius of 13mm on the side of coil 1 near coil 1. Slider 4 is also compressed by electromagnetic force, causing spring 5 to shift. The part connected to the limiting steel ball 7 changes from a plane to a third arc-shaped groove. The limiting steel ball 7 is radially separated by the thrust transmitted by the ejector connecting rod 6. This radial component pushes the steel ball to radially press the third arc-shaped groove 10 of slider 4, further pushing slider 4 to compress spring 5 and cause displacement. Under the action of the two thrusts, the limiting steel ball 7 gradually moves into the third arc-shaped groove 10 of slider 4. The movement channel of ejector connecting rod 6 is fully opened, and unlocking is completed. The armature continues to push ejector connecting rod 6 to move axially until the load is ejected. When the discharge ends, spring 5 resets, pushing slider 4 to reset. During this process, the limiting steel ball 7 is squeezed and pushed to the reset state by the third arc-shaped groove 10 of slider 4.

[0048] In this embodiment, spring 5 is used to reset slider 4. One end of spring 5 is connected to the end face of the housing, and the other end of spring 5 is connected to slider 4. Spring 5 is set at the end away from electric drive 2. There are a total of six springs 5 ​​with an inner diameter of 3mm and an elastic coefficient of 10N / mm. When the discharge ends, spring 5 resets and pushes slider 4 to reset. During this process, the limiting steel ball 7 is squeezed and pushed to the reset state by the arc groove of slider 4.

[0049] In this embodiment, the limiting steel balls 7 are used to lock and unlock the pusher connecting rod 6. The limiting steel balls 7 are located between the slider 4 and the pusher connecting rod 6. The limiting steel balls 7 have a radius of 10mm and there are four in total. Most of them are located in the first arc-shaped groove 8 of the unlocking part of the outer shell 3. One side is in contact with the slider 4, and the other side is located in the second arc-shaped groove 9 of the pusher connecting rod 6. The outer shell 3 has an overall outer diameter of 104mm and a length of 160mm. The material is epoxy resin. The internal structure of the pusher connecting rod 6 has cavities according to the structure of the coil 1, armature, slider 4, spring 5, and pusher connecting rod 6. When in the locked state, the limiting steel balls 7 are partially located in the first arc-shaped groove 8 and partially located in the second arc-shaped groove 9. When in the unlocked state, the limiting steel balls 7 are partially located in the third arc-shaped groove 10. When coil 1 is not energized, the system is in locked mode. At this time, spring 5 is in a preliminary compressed state with an initial pressure of about 5N. The limiting steel ball 7 extends out and is located in the first arc-shaped groove 8 and the second arc-shaped groove 9 of the ejector connecting rod 6 in the separation mechanism of the outer shell 3, constraining the armature and the ejector connecting rod 6 within the central channel of the outer shell 3. During the separation and release process, the system adjusts the discharge parameters according to the requirements, and the pulse power supply discharges. A large current flows through coil 1 instantaneously, generating a strong magnetic field inside and around coil 1. The armature is subjected to a strong Lorentz force F1, which also acts on the ejector connecting rod 6. At the same time, the slider 4 is also compressed by the electromagnetic force and displaced by the spring 5. The part connected to the limiting steel ball 7 changes from a plane to a third arc-shaped groove surface. The limiting steel ball 7 is radially separated by the thrust transmitted by the ejector connecting rod 6. This radial component pushes the steel ball to radially press the third arc-shaped groove 10 of the slider 4, further pushing the slider 4 to compress the spring 5 and cause displacement. Under the action of the two thrusts, the limiting steel ball 7 gradually moves into the third arc-shaped groove 10 of the slider 4. The movement channel of the ejector connecting rod 6 is fully opened, and the unlocking is completed. The armature continues to push the ejector connecting rod 6 to move axially until the load is ejected. When the discharge ends, the spring 5 resets and pushes the slider 4 to reset. During this process, the limiting steel ball 7 is squeezed and pushed to the reset state by the third arc-shaped groove 10 of the slider 4.

[0050] The functional improvements of this invention to the connection and separation system are mainly reflected in two aspects: firstly, the electromagnetic ejector device has a controllable initial velocity separation and release capability, when an initial velocity v is required. i When the load is released, coil 1 receives a current I from the power supply system. i The armature is subjected to the corresponding Lorentz force F. i An axial overload is generated, and the armature accelerates the load to speed v in a short period of time. iThis invention achieves separation at a specified initial velocity. Specifically, the electromagnetic launcher can adjust the initial launch velocity by regulating the input current, and its velocity control method boasts an extremely high response rate. On the other hand, traditional connection and separation devices employ unlocking methods such as explosive bolts and shape memory metals. The former generates significant propellant gas impact during separation, which is detrimental to system safety and stability, while the latter has a slow unlocking response rate and complex structure. The electromagnetic launcher device of this invention possesses a self-unlocking function and the ability to operate repeatedly. The unlocking energy of the electromagnetic launcher is shared with the load's kinetic energy, and unlocking is achieved through the leakage magnetic field formed near coil 1 by the separator's magnetic core. This allows for instantaneous self-unlocking of the structure during separation and release, exhibiting an extremely high response rate. Furthermore, when the system energy is regenerated, the energy of the self-unlocking structure can also be regenerated, thus enabling the unlocking process to be repeated in a space environment.

[0051] Another embodiment of the present invention provides a method for using an electromagnetic thrusting device with a self-unlocking and reset function.

[0052] When coil 1 is not energized, the system is in the locked mode. At this time, spring 5 is in the initial compressed state, and the limiting steel ball 7 extends out from the first arc groove 8 and the second arc groove 9, constraining the armature and the pusher connecting rod 6 in the middle channel of the outer shell 3.

[0053] During the separation and release process, the system adjusts the discharge parameters according to the input requirements, the pulse power supply discharges, the coil 1 passes a large current instantaneously, a strong magnetic field is generated inside and around the coil 1, the armature is subjected to a strong Lorentz force, this force also acts on the pusher connecting rod 6, at the same time, the slider 4 also presses the spring 5 and produces displacement under the action of electromagnetic force, the part connected to the limiting steel ball 7 changes from a plane to an arc-shaped groove surface.

[0054] The limiting steel ball 7 is radially separated from the thrust transmitted by the pusher connecting rod 6. This radial component of the force pushes the steel ball to radially press the groove surface of the slider 4, further pushing the slider 4 to compress the spring 5 and generate displacement. Under the action of the two thrusts, the limiting steel ball 7 gradually moves into the arc groove of the slider 4, and the movement channel of the pusher connecting rod 6 is fully opened, and the unlocking is completed.

[0055] The armature continues to push the ejector connecting rod 6 axially until the load completes the ejection;

[0056] When the discharge ends, the spring 5 resets, pushing the slider 4 to reset. During this process, the limiting steel ball 7 is squeezed and pushed to the reset state by the third arc groove 10 of the slider 4.

[0057] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0058] This invention employs electromagnetic launch technology, enabling the payload to be launched at a specified initial velocity onto the separation surface. Furthermore, the device utilizes the spatial magnetic field during the electromagnetic launch process to instantly open the payload separation path, completing the self-unlocking process of the electromagnetic launch device. The device is energy-renewable, its separation kinetic energy is controllable and adjustable, and it possesses a rapid self-unlocking function, significantly improving the efficiency and capability of connection and separation. In other words, it can complete self-unlocking and launch operations using electromagnetic energy, enabling rapid response and release separation of the target payload. Its separation kinetic energy is adjustable and controllable. Simultaneously, the device's energy is renewable, and its separation and acceleration mechanisms reset after operation, allowing for repeated operation.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An electromagnetic thrusting device with self-unlocking and reset function, characterized in that, include: The outer shell has an internal cavity with a first arc-shaped groove. A pusher connecting rod, which is located at the axis of the housing and has a second arc-shaped groove; An armature, wherein the armature is disposed at one end of the pusher connecting rod; A coil, which is sleeved at the junction of the armature and the pusher connecting rod; The slider, which is fitted with a clearance fit on the ejector connecting rod and is located adjacent to the coil, has a third arc-shaped groove; and A spring, one end of which is connected to the end face of the housing, and the other end of which is connected to the slider, wherein the spring is located at the end away from the armature; A limiting steel ball is located between the slider and the pusher connecting rod; When locked, the limiting steel ball is partially located in the first arc-shaped groove and partially in the second arc-shaped groove; when unlocked, the limiting steel ball is partially located in the third arc-shaped groove; during the separation and release process, the system adjusts the discharge parameters according to the requirements, the pulse power supply discharges, the coil passes a large current instantaneously, a strong magnetic field is generated inside and around the coil, the armature is subjected to a strong Lorentz force, this force also acts on the pusher connecting rod, at the same time, the slider also compresses the spring and generates displacement under the action of electromagnetic force, and the part connected to the limiting steel ball changes from a plane to an arc-shaped groove surface.

2. The electromagnetic thrusting device with self-unlocking and reset function as described in claim 1, characterized in that, The outer casing is designed with a cavity structure in accordance with the structural shape of the coil, armature, slider, spring and pusher connecting rod.

3. The electromagnetic thrusting device with self-unlocking and reset function as described in claim 1, characterized in that, One end of the pusher connecting rod is flexibly connected to the armature, and the other end of the pusher connecting rod is tightly connected to an external load.

4. The electromagnetic thrusting device with self-unlocking and reset function as described in claim 1, characterized in that, The slider is located on one side of the coil axis and is made of annular permanent magnet material.

5. The electromagnetic thrusting device with self-unlocking and reset function as described in claim 1, characterized in that, The coil is a multi-turn, multi-layer copper coil, which is made by winding flat, long copper wire, and the insulation gap material of the copper wire is polyimide.

6. The electromagnetic thrusting device with self-unlocking and reset function as described in claim 1, characterized in that, The armature is a silicon steel columnar structure, and the outer shell is made of epoxy resin.

7. The electromagnetic thrusting device with self-unlocking and reset function as described in claim 1, characterized in that, The slider is circular in shape, and the third arc-shaped groove is located on the inner side of the circular structure near the coil end.

8. The electromagnetic thrusting device with self-unlocking and reset function as described in claim 1, characterized in that, The second arc-shaped groove is located on the outer side of the middle section of the pusher connecting rod.

9. A method of using an electromagnetic thrusting device with self-unlocking and reset function, based on the electromagnetic thrusting device with self-unlocking and reset function according to any one of claims 1-8, characterized in that, include: When the coil is not energized, the system is in the locked mode. At this time, the spring is in the initial compressed state, and the limiting steel ball extends out and is located in the first arc groove and the second arc groove, constraining the armature and the pusher connecting rod in the middle channel of the outer shell. During the separation and release process, the system adjusts the discharge parameters according to the input requirements, the pulse power supply discharges, the coil passes a large current instantaneously, a strong magnetic field is generated inside and around the coil, the armature is subjected to a strong Lorentz force, and this force also acts on the pusher connecting rod. At the same time, the slider also compresses the spring and produces displacement under the action of electromagnetic force, and the part connected to the limiting steel ball changes from a plane to an arc-shaped groove surface. The limiting steel ball has a radial component of the thrust transmitted by the pusher connecting rod. This radial component pushes the steel ball to radially press the third arc surface groove, further pushing the slider to compress the spring and generate displacement. Under the action of the two thrusts, the limiting steel ball gradually moves into the third arc surface groove, the pusher connecting rod movement channel is fully opened, and the unlocking is completed. The armature continues to push the ejector connecting rod axially until the load completes the ejection; When the discharge ends, the spring resets, pushing the slider to reset. During this process, the limiting steel ball is squeezed and pushed to the reset state by the third arc groove of the slider.

Images