Explosion activation device, emergency ejection seat and aircraft

Abstract

The utility model relates to an explosion activation device, emergency ejection seat and aircraft, wherein the explosion activation device comprises a conductive shell and a power supply, the interior of the conductive shell is slidably connected with an actuator, the interior of the actuator is provided with a plunger cavity, the interior of the plunger cavity is slidably connected with a plunger, the actuator is slidably connected with a limiting ball, and the limiting ball is connected with the power supply. The actuator and the plunger are clamped or separated through a limiting ball, an insulating base is arranged on the conductive shell, an electric contact point is arranged on the insulating base, one end, close to the electric contact point, of the plunger is in contact with or separated from the electric contact point, and the conductive shell, the actuator, the limiting ball and the plunger are all conductive parts. The anode of the power supply is connected with the conductive shell, and the cathode of the power supply is connected with the electric contact. According to the explosion activation device, the activation function can be achieved only by pulling the actuator to change the connection state between the actuator and the plunger, and the structure of the explosion activation device is simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion activation, in particular to an explosion activation device, an emergency ejection seat and an aircraft. Background Art

[0002] An explosion activation device is a device used to trigger or control an explosive device, often used in the military and explosive engineering fields. The design of these devices requires a high degree of precision, reliability, and safety to ensure that no accidents occur when detonating or controlling the explosive device. In military applications, explosion activation devices are often used to remotely detonate military bombs, mines, artillery shells, and blasting devices. This allows operators to remain at a relatively safe distance and reduces operational risks. In industrial blasting applications, explosion activation devices are used to control the timing and effect of the blast to ensure safe blasting and structural demolition. Explosion activation devices must be designed with high reliability and safety to avoid explosion accidents. In engineering emergency first aid applications, explosion activation devices are often used for safety protection equipment in emergency situations, such as automobile airbags, aircraft emergency ejection seats, and parachute opening devices.

[0003] Among them, in engineering emergency first aid applications, the explosion activation device structure in the prior art generally includes components such as a pull ring steel cable, a crank and a rocker arm. A crank-connecting rod structure is formed by the pull ring steel cable, the crank and the rocker arm, and then the explosive device is activated by the crank-connecting rod mechanism. The structure of this type of explosion activation device is relatively complex, which affects the control performance of the explosion activation device. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an explosion activation device, an emergency ejection seat and an aircraft, which can simplify the structure of the explosion activation device.

[0005] To achieve the above-mentioned purpose, the utility model provides an explosion activation device, including a conductive shell and a power supply, an actuator is slidably connected to the conductive shell, a plunger cavity is provided in the actuator, a plunger is slidably connected to the plunger cavity, a limiting ball is slidably connected to the actuator, the actuator and the plunger are clamped or separated by the limiting ball, an insulating base is provided on the conductive shell, an electrical contact point is provided on the insulating base, an end of the plunger close to the electrical contact point is in contact with or separated from the electrical contact point, the conductive shell, the actuator, the limiting ball and the plunger are all conductive components, the positive pole of the power supply is connected to the conductive shell, and the negative pole of the power supply is connected to the electrical contact point.

[0006] In one embodiment of the utility model, it also includes a first sealing ring, a handle cavity is provided in the conductive shell, a pull ring handle is slidably connected to the handle cavity, the pull ring handle is interference-connected to the inner wall of the handle cavity through the first sealing ring, and the pull ring handle is connected to the actuator.

[0007] In one embodiment of the utility model, a second sealing ring is further included, a mounting cavity is provided on the pull ring handle, a connecting end is provided on the actuator, and the connecting end is interference-connected with the mounting cavity through the second sealing ring.

[0008] In one embodiment of the utility model, it also includes a built-in pull rod, a sliding cavity with a preset length and a first through hole are provided in the pull ring handle, the sliding cavity is connected with the first through hole, a second through hole is provided in the actuator, the second through hole is connected with the plunger cavity, the built-in pull rod is penetrated by the sliding cavity, the first through hole, the second through hole and the plunger cavity, a first flange is provided at one end of the built-in pull rod, and a second flange is provided at the other end of the built-in pull rod, the first flange is provided in the sliding cavity, and the diameter of the first flange is larger than the diameter of the first through hole, the second flange is provided in the plunger cavity, and the diameter of the second flange is larger than the diameter of the second through hole.

[0009] In one embodiment of the utility model, a third sealing ring is further included. An execution cavity is provided in the conductive shell, the execution cavity is communicated with the handle cavity, the actuator is slidably connected in the execution cavity, and the actuator and the inner wall of the execution cavity are interference-connected through the third sealing ring.

[0010] In one embodiment of the utility model, a sliding groove is provided on the actuator, the limiting ball is slidably connected in the sliding groove, a limiting groove is provided on one end of the plunger close to the actuator, the limiting ball is simultaneously clamped in the sliding groove and the limiting groove, the sliding direction of the limiting ball in the sliding groove is a direction approaching or moving away from the limiting groove, the point on the limiting ball closest to the axis of the actuator is the target point, the minimum distance between the target point and the inner wall of the plunger cavity is a first distance, the distance between the inner wall of the execution cavity and the inner wall of the handle cavity in the radial direction is a second distance, the second distance is greater than the first distance, and the inner diameter of the handle cavity is greater than the inner diameter of the execution cavity.

[0011] In one embodiment of the utility model, a spring cavity is provided on the conductive shell, a positioning flange is provided between the execution cavity and the spring cavity, a third through hole is provided on the positioning flange, the third through hole connects the spring cavity and the execution cavity, the plunger is penetrated in the plunger cavity, the third through hole and the spring cavity, an annular cavity is formed between the plunger and the spring cavity, a compression spring is provided in the annular cavity, a limiting plate is formed on one end of the plunger close to the electrical contact point, one end of the compression spring abuts against the end face of the limiting plate away from the electrical contact point, the other end of the compression spring abuts against the end face of the positioning flange away from the actuator, and the end face of the limiting plate close to the electrical contact point is in contact with or separated from the electrical contact point.

[0012] In one embodiment of the present invention, a plurality of electrical contact points are disposed on the insulating base, and the plurality of electrical contact points are mutually redundant contact points.

[0013] On the other hand, an emergency ejection seat is provided, comprising the above-mentioned explosion activation device, to which an explosive device is connected.

[0014] In yet another aspect, an aircraft is provided, comprising the emergency ejection seat.

[0015] The above technical solution of the utility model has the following advantages compared with the prior art:

[0016] In the explosion activation device described in the present invention, the actuator is connected to the plunger, and the actuator and the plunger are switched between a latching state and a separated state through a limit ball. When the actuator and the plunger are in a latching state, one end of the plunger close to the electrical contact point is separated from the electrical contact point, the positive and negative poles of the power supply are disconnected, and the explosion activation device is in an unactivated state and will not trigger an explosion signal; when the actuator and the plunger are in a separated state, one end of the plunger close to the electrical contact point is in contact with the electrical contact point, the positive and negative poles of the power supply are short-circuited, and the explosion activation device is in an activated state, which will trigger an explosion signal and thus trigger the explosion device; therefore, the present application only needs to pull the actuator to change the connection state between the actuator and the plunger to realize the activation function, and no longer uses the complex crank-connecting rod structure in the prior art as the activation device, thereby simplifying the structure of the explosion activation device and still ensuring the reliability of the activation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a structural schematic diagram of the explosion activation device of the utility model;

[0019] Figure 2 It is a half-section structural schematic diagram of the explosion activation device of the utility model;

[0020] Figure 3 yes Figure 2 A local enlarged schematic diagram of the middle A;

[0021] Figure 4 It is a structural schematic diagram of the explosion activation device and the insulating base of the utility model;

[0022] Figure 5 It is a structural schematic diagram of a pull ring handle of the explosion activation device of the utility model;

[0023] Figure 6 It is a structural schematic diagram of an actuator of the explosion activation device of the utility model;

[0024] Figure 7 It is a structural schematic diagram of the built-in pull rod of the explosion activation device of the utility model;

[0025] Figure 8 It is a structural schematic diagram of the plunger of the explosion activation device of the utility model;

[0026] Fig. 9 It is a structural schematic diagram of a trapezoidal limiting groove on a plunger of an explosion activation device of the utility model;

[0027] Fig.10 It is a structural schematic diagram of a rectangular limit groove on the plunger of the explosion activation device of the utility model;

[0028] Fig.11 It is a structural schematic diagram of a circular limiting groove on the plunger of the explosion activation device of the utility model;

[0029] Fig.12 It is a structural schematic diagram of the first distance and the second distance of the explosion activation device of the utility model;

[0030] Fig.13 The utility model is a schematic diagram of the structure in which the actuator and the plunger of the explosion activation device are separated.

[0031] Description of the Figures in the Specification:

[0032] 1. Conductive shell; 2. Power supply; 3. Actuator; 4. Plunger cavity; 5. Plunger; 6. Limiting ball; 7. Insulating base; 8. Electrical contact point; 9. First sealing ring; 10. Handle cavity; 11. Pull ring handle; 12. Second sealing ring; 13. Installation cavity; 14. Connecting end; 15. Built-in pull rod; 16. Sliding cavity; 17. First through hole; 18. Second through hole; 19. First flange; 20. Second flange; 21. Third sealing ring; 22. Actuator cavity; 23. Sliding groove; 24. Limiting groove; 25. Spring cavity; 26. Positioning flange; 27. Third through hole; 28. Annular cavity; 29. ​​Compression spring; 30. Limiting plate; 31. Handle part. DETAILED DESCRIPTION

[0033] Embodiment 1

[0034] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Reference Figures 1 to 13 As shown, the explosion activation device of the utility model comprises a conductive shell 1 and a power source 2, an actuator 3 is slidably connected in the conductive shell 1, a plunger cavity 4 is provided in the actuator 3, a plunger 5 is slidably connected in the plunger cavity 4, a limiting ball 6 is slidably connected to the actuator 3, the actuator 3 and the plunger 5 are clamped or separated by the limiting ball 6, an insulating base 7 is provided on the conductive shell 1, an electrical contact point 8 is provided on the insulating base 7, an end of the plunger 5 close to the electrical contact point 8 is in contact with or separated from the electrical contact point 8, the conductive shell 1, the actuator 3, the limiting ball 6 and the plunger 5 are all conductive parts, the positive pole of the power source 2 is connected to the conductive shell 1, and the negative pole of the power source 2 is connected to the electrical contact point 8.

[0036] The explosion activation device of the present application comprises a conductive housing 1 and a power source 2, such as Figure 1 and Figure 2As shown, the actuator 3 is slidably connected to the conductive shell 1, so the actuator 3 can slide from the conductive shell 1 to the outside of the conductive shell 1, the actuator 3 acts as a starting switch for the explosion activation device, and the explosion activation device acts as a starting switch for the explosion device. A plunger cavity 4 is provided in the actuator 3, and a plunger 5 is slidably connected to the plunger cavity 4, so the plunger 5 can slide relative to the actuator 3, and the plunger 5 can slide out of the plunger cavity 4 on the actuator 3. A limiting ball 6 is slidably connected to the actuator 3, and the actuator 3 and the plunger 5 are engaged or separated by the limiting ball 6. The engaged state between the actuator 3 and the plunger 5 is shown in FIG. Figure 2 and Figure 3 As shown, the state of separation between the actuator 3 and the plunger 5 is as follows Fig.13 As shown. The default state of the explosion activation device is the state of engagement between the actuator 3 and the plunger 5. When an emergency occurs, the driver pulls the actuator 3 to disengage from the conductive housing 1 by hand. Since the actuator 3 and the plunger 5 are in an engagement state, the actuator 3 will drive the plunger 5 to move. When the actuator 3 is disengaged from the conductive housing 1, the stop ball 6 slides on the actuator 3, so that the plunger 5 is disengaged from the plunger cavity 4 on the actuator 3, that is, the actuator 3 and the plunger 5 are in a phase separation state. An insulating base 7 is provided on the conductive housing 1, and an electrical contact point 8 is provided on the insulating base 7. One end of the plunger 5 close to the electrical contact point 8 is in contact with or separated from the electrical contact point 8. When the actuator 3 and the plunger 5 are in an engagement state, one end of the plunger 5 close to the electrical contact point 8 is separated from the electrical contact point 8. When the actuator 3 and the plunger 5 are in a phase separation state, one end of the plunger 5 close to the electrical contact point 8 is in contact with the electrical contact point 8. Furthermore, the conductive housing 1, the actuator 3, the stop ball 6 and the plunger 5 are all conductive parts, so the conductive housing 1, the actuator 3, the stop ball 6 and the plunger 5 can be electrically connected. The positive pole of the power supply 2 is connected to the conductive housing 1, and the negative pole of the power supply 2 is connected to the electrical contact point 8. When the actuator 3 and the plunger 5 are in a state of being engaged, the end of the plunger 5 close to the electrical contact point 8 is separated from the electrical contact point 8, and the positive and negative poles of the power supply 2 are disconnected. The explosion activation device is in an unactivated state and will not trigger an explosion signal; when the actuator 3 and the plunger 5 are in a state of being separated, the end of the plunger 5 close to the electrical contact point 8 is in contact with the electrical contact point 8, and the positive and negative poles of the power supply 2 are short-circuited. The explosion activation device is in an activated state, which will trigger an explosion signal, thereby triggering the explosion device.

[0037] In the explosion activation device of the present application, the actuator 3 is connected to the plunger 5, and the actuator 3 and the plunger 5 are switched between a latching state and a separated state through a limit ball 6. When the actuator 3 and the plunger 5 are in a latching state, one end of the plunger 5 close to the electrical contact point 8 is separated from the electrical contact point 8, and the positive and negative poles of the power supply 2 are disconnected. The explosion activation device is in an unactivated state and will not trigger an explosion signal; when the actuator 3 and the plunger 5 are in a separated state, one end of the plunger 5 close to the electrical contact point 8 is in contact with the electrical contact point 8, and the positive and negative poles of the power supply 2 are short-circuited, and the explosion activation device is in an activated state, which will trigger an explosion signal, thereby triggering the explosion device; therefore, the present application only needs to pull the actuator 3 to change the connection state between the actuator 3 and the plunger 5 to realize the activation function, and no longer uses the complex crank-connecting rod structure in the prior art as the activation device, thereby simplifying the structure of the explosion activation device and still ensuring the reliability of the activation device.

[0038] In one embodiment, it further includes a first sealing ring 9, a handle cavity 10 is provided in the conductive shell 1, a pull ring handle 11 is slidably connected in the handle cavity 10, the pull ring handle 11 is interference-connected to the inner wall of the handle cavity 10 through the first sealing ring 9, and the pull ring handle 11 is connected to the actuator 3.

[0039] like Figure 3 and Figure 5 As shown, the explosion activation device further includes a first sealing ring 9, preferably, the first sealing ring 9 is an O-ring. A handle cavity 10 is provided in the conductive housing 1, and a pull ring handle 11 is slidably connected in the handle cavity 10, so that the pull ring handle 11 can slide relative to the conductive housing 1 in the handle cavity 10. In addition, the pull ring handle 11 facilitates the human-machine interaction between the driver and the explosion activation device, and is convenient for the driver's emergency operation compared with the driver's direct operation of the actuator 3. Preferably, a handle portion 31 is provided on the pull ring handle 11, and the handle portion 31 is a D-shaped structure. The pull ring handle 11 and the conductive shell 1 are connected by interference fit through the first sealing ring 9, that is, the pull ring handle 11 and the inner wall of the handle cavity 10 are connected by interference fit through the first sealing ring 9, so the first sealing ring 9 is in a compressed state between the pull ring handle 11 and the conductive shell 1, and the compressed first sealing ring 9 can cause friction between the pull ring handle 11 and the conductive shell 1. The magnitude of the friction can be controlled by setting the compression amount of the first sealing ring 9, so the friction can be preset between the pull ring handle 11 and the conductive shell 1, and the friction can prevent the pull ring handle 11 from easily separating from the conductive shell 1, preventing the pull ring handle 11 from separating from the conductive shell 1 in certain scenarios and affecting the driver's operation, thereby improving the safety of the explosion activation device. The pull ring handle 11 is connected to the actuator 3, so that the driver can pull the actuator 3 through the pull ring handle 11.

[0040] In one embodiment, a second sealing ring 12 is further included. A mounting cavity 13 is provided on the pull ring handle 11 . A connecting end 14 is provided on the actuator 3 . The connecting end 14 is interference-connected with the mounting cavity 13 via the second sealing ring 12 .

[0041] like Figure 3 and Figure 6 As shown, the explosion activation device further includes a second sealing ring 12, and preferably, the second sealing ring 12 is an O-ring. The pull ring handle 11 is provided with an installation cavity 13, and the actuator 3 is provided with a connecting end 14, which is installed in the installation cavity 13, and the connecting end 14 is interference-connected with the inner wall of the installation cavity 13 through the second sealing ring 12, that is, the actuator 3 and the pull ring handle 11 are interference-connected through the second sealing ring 12, so the second sealing ring 12 is in a compressed state between the actuator 3 and the pull ring handle 11, and the compressed second sealing ring 12 can cause friction between the actuator 3 and the pull ring handle 11, and the magnitude of the friction can be controlled by setting the compression amount of the second sealing ring 12, so the friction can be preset between the actuator 3 and the pull ring handle 11, and the friction can prevent the pull ring handle 11 from easily separating from the conductive housing 1 and the actuator 3, preventing the pull ring handle 11 from separating from the conductive housing 1 and the actuator 3 in certain scenarios and affecting the driver's operation, thereby improving the safety of the explosion activation device. In addition, when the pull ring handle 11 needs to slide out of the conductive shell 1, it is necessary to overcome the friction force generated by the pull ring handle 11 and the handle cavity 10 through the first sealing ring 9, and the friction force generated by the actuator 3 and the pull ring handle 11 through the second sealing ring 12.

[0042] In one embodiment, it also includes a built-in pull rod 15, and a sliding cavity 16 with a preset length and a first through hole 17 are provided in the pull ring handle 11, and the sliding cavity 16 is connected with the first through hole 17, and a second through hole 18 is provided in the actuator 3, and the second through hole 18 is connected with the plunger cavity 4. The built-in pull rod 15 is penetrated by the sliding cavity 16, the first through hole 17, the second through hole 18 and the plunger cavity 4, and a first flange 19 is provided at one end of the built-in pull rod 15, and a second flange 20 is provided at the other end of the built-in pull rod 15, and the first flange 19 is provided at the end of the sliding cavity 16 away from the actuator 3, and the diameter of the first flange 19 is larger than the diameter of the first through hole 17, and the second flange 20 is provided at the end of the plunger cavity 4 close to the pull ring handle 11, and the diameter of the second flange 20 is larger than the diameter of the second through hole 18.

[0043] like Figure 3 and Figure 7As shown, the explosion activation device also includes a built-in pull rod 15. Due to the presence of the built-in pull rod 15, when the pull ring handle 11 is pulled, the pull ring handle 11 first moves through a period of idle travel until the pull ring handle 11 contacts the built-in pull rod 15 to drive the actuator 3 to move upward. The idle travel design of the front section of the pull ring handle 11 can effectively prevent accidental touch during parking or improper operation, so as to improve the safety of the explosion activation device. Specifically, a sliding cavity 16 and a first through hole 17 with a preset length are provided in the pull ring handle 11. The preset length of the sliding cavity 16 is matched with the length of the built-in pull rod 15 to design the idle travel length of the front section of the pull ring handle 11. The sliding cavity 16 and the first through hole 17 are connected, so that the built-in pull rod 15 is simultaneously arranged in the sliding cavity 16 and the first through hole 17, and the built-in pull rod 15 can slide in the sliding cavity 16 and the first through hole 17. A second through hole 18 is provided in the actuator 3, and the second through hole 18 is connected to the plunger cavity 4, so that the built-in pull rod 15 is simultaneously passed through the sliding cavity 16, the first through hole 17, the second through hole 18 and the plunger cavity 4, and the built-in pull rod 15 can slide in the sliding cavity 16, the first through hole 17, the second through hole 18 and the plunger cavity 4. In order to enable the pull ring handle 11 to pull the actuator 3 through the built-in pull rod 15 after the front idle stroke, a first flange 19 and a second flange 20 are respectively formed at both ends of the built-in pull rod 15, wherein the first flange 19 is arranged in the sliding cavity 16, preferably, the first flange 19 is arranged at the end of the sliding cavity 16 away from the actuator 3, and the diameter of the first flange 19 is larger than the diameter of the first through hole 17, so that the pull ring handle 11 can drive the built-in pull rod 15 to move through the first flange 19 on the built-in pull rod 15 after the front idle stroke; the second flange 20 is arranged in the plunger cavity 4, preferably, the second flange 20 is arranged at the end of the plunger cavity 4 close to the pull ring handle 11, and the diameter of the second flange 20 is larger than the diameter of the second through hole 18, so that the pull ring handle 11 can drive the actuator 3 to slide in the execution cavity 22 through the second flange 20 on the built-in pull rod 15 after the front idle stroke.

[0044] In one embodiment, a third sealing ring 21 is further included. An execution cavity 22 is provided in the conductive shell 1. The execution cavity 22 is communicated with the handle cavity 10. The actuator 3 is slidably connected in the execution cavity 22. The actuator 3 and the inner wall of the execution cavity 22 are interference-connected through the third sealing ring 21.

[0045] like Figure 3 and Figure 6As shown, the explosion activation device further includes a third sealing ring 21, and preferably, the third sealing ring 21 is an O-ring. An execution cavity 22 is provided in the conductive housing 1, and the actuator 3 is slidably connected in the execution cavity 22, and the actuator 3 and the inner wall of the execution cavity 22 are interference-connected through the third sealing ring 21, that is, the actuator 3 and the conductive housing 1 are interference-connected through the third sealing ring 21, so the third sealing ring 21 is in a compressed state between the actuator 3 and the conductive housing 1, and the compressed third sealing ring 21 can cause friction between the actuator 3 and the conductive housing 1, and the magnitude of the friction can be controlled by setting the compression amount of the third sealing ring 21, so the friction can be preset between the actuator 3 and the conductive housing 1, and the friction can prevent the actuator 3 from easily detaching from the conductive housing 1, and prevent the pull ring handle 11 from driving the actuator 3 to detach from the conductive housing 1 through the built-in pull rod 15 in certain scenarios, thereby affecting the driver's operation, and improving the safety of the explosion activation device. When the actuator 3 is driven to slide out of the conductive housing 1 by the built-in pull rod 15 , the friction force generated by the third sealing ring 21 between the actuator 3 and the conductive housing 1 needs to be overcome.

[0046] In one embodiment, a sliding groove 23 is provided on the actuator 3, and the limiting ball 6 can be slidably connected to the sliding groove 23. A limiting groove 24 is provided on the end of the plunger 5 close to the actuator 3, and the limiting ball 6 is simultaneously clamped in the sliding groove 23 and the limiting groove 24. The sliding direction of the limiting ball 6 in the sliding groove 23 is the direction approaching or moving away from the limiting groove 24. The point on the limiting ball 6 closest to the axis of the actuator 3 is the target point, and the minimum distance between the target point and the inner wall of the plunger cavity 4 is the first distance. The distance between the inner wall of the execution cavity 22 and the inner wall of the handle cavity 10 in the radial direction is the second distance, and the second distance is greater than the first distance. The inner diameter of the handle cavity 10 is greater than the inner diameter of the execution cavity 22.

[0047] like Figure 3 and Figure 8As shown, the actuator 3 and the plunger 5 are connected or separated by the limiting ball 6. Specifically, a sliding groove 23 is provided on the actuator 3, and the limiting ball 6 can be slidably connected in the sliding groove 23. The sliding groove 23 is along the radial direction of the actuator 3. In the default engagement state of the actuator 3 and the plunger 5, the limiting ball 6 is simultaneously engaged in the sliding groove 23 and the limiting groove 24, and the actuator 3 and the plunger 5 are relatively fixed; when the actuator 3 and the plunger 5 are switched to a separation state, the limiting ball 6 slides in the sliding groove 23 in a direction away from the limiting groove 24, and the limiting ball 6 disengages from the limiting groove 24. At this time, the actuator 3 and the plunger 5 are relatively separated, and the plunger 5 can slide out of the actuator 3. Furthermore, in order to allow the limiting ball 6 to be normally disengaged from the limiting groove 24, it is necessary to design the dimensions of the handle cavity 10, the actuator cavity 22 and the plunger cavity 4, and select the point on the limiting ball 6 that is closest to the axis of the actuator 3 as the target point, such as Fig.12 As shown, the minimum distance (radial distance) between the target point and the inner wall of the plunger cavity 4 is the first distance L1, and the distance between the inner wall of the execution cavity 22 and the inner wall of the handle cavity 10 in the radial direction is the second distance L2, and the second distance L2 is greater than the first distance L1, so as to ensure that the distance that the limiting ball 6 slides in the sliding groove 23 away from the limiting groove 24 is greater than the first distance L1, so that the limiting ball 6 can be completely separated from the limiting groove 24, so that when the actuator 3 is separated from the conductive shell 1 by the built-in pull rod 15, the plunger 5 can be separated from the actuator 3, so that the plunger 5 can contact the electrical contact point 8. In addition, the inner diameter of the handle cavity 10 is greater than the inner diameter of the execution cavity 22. Among them, the cross section of the limiting groove 24 can be rectangular (such as Fig.10 As shown), trapezoidal (as Fig. 9 as shown) and spherical (as Fig.11 The limiting groove 24 is preferably in a shape such as a rectangular shape (as shown), preferably a trapezoidal shape, and the inclined surface of the trapezoid can facilitate the pushing of the limiting ball 6 out of the limiting groove 24. In addition, when the cross section of the limiting groove 24 is rectangular, it is necessary to ensure that the geometric center of the limiting ball 6 is located outside the plunger cavity 4 to prevent the limiting ball 6 from being stuck in the rectangular limiting groove 24 and the sliding groove 23 at the same time. Furthermore, no matter what shape the cross section of the limiting groove 24 is, as long as it is ensured that the geometric center of the limiting ball 6 is located outside the plunger cavity 4, it is possible to prevent the limiting ball 6 from being stuck in the rectangular limiting groove 24 and the sliding groove 23 at the same time. In addition, the limiting groove 24 is annular, and a plurality of sliding grooves 23 and limiting balls 6 can be provided, and the sliding grooves 23 and limiting balls 6 are provided one by one, and the sliding grooves 23 and limiting balls 6 are arranged in a circular array around the axis of the actuator 3.

[0048] In one embodiment, a spring cavity 25 is provided on the conductive shell 1, a positioning flange 26 is provided between the execution cavity 22 and the spring cavity 25, a third through hole 27 is provided on the positioning flange 26, the third through hole 27 connects the spring cavity 25 and the execution cavity 22, the plunger 5 is penetrated in the plunger cavity 4, the third through hole 27 and the spring cavity 25, an annular cavity 28 is formed between the plunger 5 and the spring cavity 25, a compression spring 29 is provided in the annular cavity 28, a limiting plate 30 is formed on one end of the plunger 5 close to the electrical contact point 8, one end of the compression spring 29 abuts on the end surface of the limiting plate 30 away from the electrical contact point 8, the other end of the compression spring 29 abuts on the end surface of the positioning flange 26 away from the actuator 3, and the end surface of the limiting plate 30 close to the electrical contact point 8 is in contact with or separated from the electrical contact point 8.

[0049] like Figure 3 and Figure 4As shown, a spring cavity 25 is provided on the conductive shell 1, and a positioning flange 26 is provided between the execution cavity 22 and the spring cavity 25. The positioning flange 26 protrudes in the axial direction, and a third through hole 27 is provided on the positioning flange 26. The third through hole 27 connects the spring cavity 25 and the execution cavity 22, so that the plunger 5 can pass through the plunger cavity 4, the third through hole 27 and the spring cavity 25. An annular cavity is formed between the plunger 5 and the spring cavity 25, and a spring is arranged in the annular cavity. The spring is set with a pre-compression amount, and the spring is a compression spring 29; the compression spring 29 is arranged between the conductive housing 1 and the plunger 5. Specifically, a limit plate 30 is formed on the end of the plunger 5 close to the electrical contact point 8, and one end of the compression spring 29 abuts against the end surface of the limit plate 30 away from the electrical contact point 8, and the other end of the compression spring 29 abuts against the end surface of the positioning flange 26 away from the actuator 3. Since the compression spring 29 is set with a pre-compression amount, the compression spring 29 abuts between the plunger 5 and the conductive housing 1, and the plunger 5 has a tendency to move toward the electrical contact point 8 relative to the conductive housing 1. The end surface of the limit plate 30 close to the electrical contact point 8 is in contact with or separated from the electrical contact point 8.Specifically, when the driver pulls the pull ring handle 11 in an emergency, the friction between the pull ring handle 11 and the first sealing ring 9 and the second sealing ring 12 is overcome, and the pull ring handle 11 moves away from the actuator 3, and the pull ring handle 11 has not yet contacted the first flange 19 of the built-in pull rod 15, so the pull ring handle 11 is an empty stroke slide; when the pull ring handle 11 is completely separated from the conductive housing 1 and the pull ring handle 11 contacts the first flange 19 of the built-in pull rod 15, the pull ring handle 11 drives the first flange 19 to move, and the first flange 19 drives the second flange 19 to move. The flange 20 moves, and the second flange 20 drives the actuator 3 to move in the direction away from the electrical contact point 8. Since the actuator 3 and the plunger 5 are connected by the limiting ball 6 at this time, the actuator 3 drives the plunger 5 to move synchronously in the direction away from the electrical contact point 8 through the limiting ball 6. Since a compression spring 29 is provided between the plunger 5 and the conductive housing 1, the compression spring 29 applies a tendency to the plunger 5 to move in the direction of the electrical contact point 8 relative to the actuator 3. At the same time, the limiting groove 24 of the plunger 5 abuts against the limiting ball 6, and the limiting ball 6 has a tendency to move in the sliding groove 23 away from the limiting groove 24. , but the limiting ball 6 is limited in the execution cavity 22. When the limiting ball 6 moves from the execution cavity 22 area to the handle area, the limiting ball 6 can move in the sliding groove 23 in the direction away from the limiting groove 24 under the pressure of the upper limiting groove 24 of the plunger 5. At this time, the limiting ball 6 moves into the handle cavity 10. When the limiting ball 6 is separated from the limiting groove 24, the limiting ball 6 no longer clamps the actuator 3 and the plunger 5. At this time, the actuator 3 and the plunger 5 are separated, and the plunger 5 moves toward the electrical contact point 8 under the elastic force of the compression spring 29, so that the limiting plate 30 on the plunger 5 and the limiting plate 30 on the plunger 5 are in contact with each other. The electrical contact point 8 is in contact. Since the positive electrode of the power source 2 is connected to the conductive shell 1, the negative electrode of the power source 2 is connected to the electrical contact point 8, the conductive shell 1 is connected to the plunger 5, and the plunger 5 is in contact with the electrical contact point 8, in addition, the conductive shell 1, the plunger 5, the electrical contact point 8 and the compression spring 29 are all conductive parts. Therefore, when the limit plate 30 on the plunger 5 is in contact with the electrical contact point 8, the positive electrode and the negative electrode of the power source 2 are short-circuited through the conductive shell 1, the plunger 5, the compression spring 29 and the electrical contact point 8, triggering a short-circuited signal, thereby detonating the explosive device through the trigger signal. Among them, when the limit plate 30 on the plunger 5 is in contact with the electrical contact point 8, the compression spring 29 still has a pre-compression amount and is in a compressed state, thereby providing a stable contact force between the limit plate 30 and the electrical contact point 8 through the compression spring 29, thereby improving the reliability of the explosion activation device.

[0050] In one embodiment, a plurality of electrical contact points 8 are disposed on the insulating base 7 , and the plurality of electrical contact points 8 are mutually redundant contact points.

[0051] A plurality of electrical contact points 8 are arranged on the insulating base 7. Therefore, the plurality of electrical contact points 8 are mutually redundant contact points. When one of the electrical contact points fails, electrical connection can be achieved through the redundant contact points, so as to improve the reliability of the explosion activation device.

[0052] Embodiment 2

[0053] An emergency ejection seat is provided, the emergency ejection seat comprising the above-mentioned explosion activation device, the explosion activation device being connected to the explosion activation device, the explosion activation device comprising a conductive shell 1 and a power source 2, an actuator 3 being slidably connected in the conductive shell 1, a plunger cavity 4 being provided in the actuator 3, a plunger 5 being slidably connected in the plunger cavity 4, a limiting ball 6 being slidably connected to the actuator 3, the actuator 3 and the plunger 5 being clamped or separated by the limiting ball 6, an insulating base 7 being provided on the conductive shell 1, an electrical contact point 8 being provided on the insulating base 7, an end of the plunger 5 close to the electrical contact point 8 being in contact with or separated from the electrical contact point 8, the conductive shell 1, the actuator 3, the limiting ball 6 and the plunger 5 being all conductive components, the positive pole of the power source 2 being connected to the conductive shell 1, and the negative pole of the power source 2 being connected to the electrical contact point 8.

[0054] In the explosion activation device of the present application, the actuator 3 is connected to the plunger 5, and the actuator 3 and the plunger 5 are switched between a latching state and a separated state through a stopper ball 6. When the actuator 3 and the plunger 5 are in a latching state, one end of the plunger 5 close to the electrical contact point 8 is separated from the electrical contact point 8, and the positive and negative poles of the power supply 2 are disconnected. The explosion activation device is in an unactivated state and will not trigger an explosion signal. When the actuator 3 and the plunger 5 are in a separated state, one end of the plunger 5 close to the electrical contact point 8 is in contact with the electrical contact point 8. , the positive and negative electrodes of the power supply 2 are short-circuited, and the explosion activation device is in an activated state, which will trigger an explosion signal, thereby triggering the explosion device, and then the emergency ejection seat is ejected through the explosion device; therefore, the present application only needs to pull the actuator 3 and then change the connection state between the actuator 3 and the plunger 5 to achieve the activation function, and no longer uses the complex crank-connecting rod structure in the prior art as the activation device, which simplifies the structure of the explosion activation device, and also simplifies the additional structure of the emergency ejection seat, which can improve the flexibility of the use of the emergency ejection seat. In addition, the branch connecting the power supply 2 and the conductive shell 1 forms a positive branch, and the branch connecting the power supply 2 and the electrical contact point 8 forms a negative branch. A power timer can be connected to the positive branch or the negative branch. The power timer can start the power supply one by one from the front-stage equipment to the back-stage equipment. When the power supply is turned off, various types of electrical equipment are turned off from the back-stage to the front-stage. In this way, various types of electrical equipment can be effectively managed and controlled in a unified manner, avoiding human errors. At the same time, it can reduce the impact of electrical equipment on the power supply network at the moment of switching, and avoid the impact of induced current on the equipment, ensuring the stability of the entire power system.

[0055] Embodiment 3

[0056] An aircraft is provided, the aircraft comprising the above-mentioned emergency ejection seat, the emergency ejection seat comprising the above-mentioned explosion activation device, the explosion activation device being connected to the explosion activation device, the explosion activation device comprising a conductive shell 1 and a power source 2, an actuator 3 being slidably connected in the conductive shell 1, a plunger cavity 4 being provided in the actuator 3, a plunger 5 being slidably connected in the plunger cavity 4, a limiting ball 6 being slidably connected to the actuator 3, the actuator 3 and the plunger 5 being clamped or separated by the limiting ball 6, an insulating base 7 being provided on the conductive shell 1, an electrical contact point 8 being provided on the insulating base 7, an end of the plunger 5 close to the electrical contact point 8 being in contact with or separated from the electrical contact point 8, the conductive shell 1, the actuator 3, the limiting ball 6 and the plunger 5 being all conductive components, the positive electrode of the power source 2 being connected to the conductive shell 1, and the negative electrode of the power source 2 being connected to the electrical contact point 8.

[0057] In the explosion activation device of the present application, the actuator 3 is connected to the plunger 5, and the actuator 3 and the plunger 5 are switched between a latching state and a separated state through a stopper ball 6. When the actuator 3 and the plunger 5 are in a latching state, one end of the plunger 5 close to the electrical contact point 8 is separated from the electrical contact point 8, and the positive and negative poles of the power supply 2 are disconnected. The explosion activation device is in an unactivated state and will not trigger an explosion signal. When the actuator 3 and the plunger 5 are in a separated state, one end of the plunger 5 close to the electrical contact point 8 is connected to the electrical contact point 8. Contact, the positive and negative electrodes of the power supply 2 are short-circuited, and the explosion activation device is in an activated state, which will trigger an explosion signal, thereby triggering the explosion device, and then the emergency ejection seat is ejected through the explosion device; therefore, the present application only needs to pull the actuator 3 and then change the connection state between the actuator 3 and the plunger 5 to achieve the activation function, and no longer uses the complex crank-connecting rod structure in the prior art as the activation device, which simplifies the structure of the explosion activation device, and also simplifies the additional structure of the emergency ejection seat, further simplifying the structure of the aircraft.

[0058] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An explosion activation device, characterized in that: The invention comprises a conductive shell (1) and a power source (2); an actuator (3) is slidably connected to the conductive shell (1); a plunger cavity (4) is provided in the actuator (3); a plunger (5) is slidably connected to the plunger cavity (4); a limiting ball (6) is slidably connected to the actuator (3); the actuator (3) and the plunger (5) are connected or separated by the limiting ball (6); an insulating base (7) is provided on the conductive shell (1); an electrical contact point (8) is provided on the insulating base (7); an end of the plunger (5) close to the electrical contact point (8) is in contact with or separated from the electrical contact point (8); the conductive shell (1), the actuator (3), the limiting ball (6) and the plunger (5) are all conductive components; the positive electrode of the power source (2) is connected to the conductive shell (1); and the negative electrode of the power source (2) is connected to the electrical contact point (8).

2. The explosive activation device according to claim 1, characterized in that: It also includes a first sealing ring (9), a handle cavity (10) is provided in the conductive shell (1), a pull ring handle (11) is slidably connected in the handle cavity (10), the pull ring handle (11) is interference-connected with the inner wall of the handle cavity (10) via the first sealing ring (9), and the pull ring handle (11) is connected to the actuator (3).

3. The explosion activation device according to claim 2, characterized in that: It also includes a second sealing ring (12), the pull ring handle (11) is provided with a mounting cavity (13), the actuator (3) is provided with a connecting end (14), and the connecting end (14) and the mounting cavity (13) are interference-connected via the second sealing ring (12).

4. The explosion activation device according to claim 2, characterized in that: The actuator (3) further comprises a built-in pull rod (15), wherein a sliding cavity (16) having a preset length and a first through hole (17) are provided in the pull ring handle (11), wherein the sliding cavity (16) is communicated with the first through hole (17), wherein a second through hole (18) is provided in the actuator (3), wherein the second through hole (18) is communicated with the plunger cavity (4), and wherein the built-in pull rod (15) is inserted into the sliding cavity (16), the first through hole (17), the second through hole (18) and the first through hole (17). In the plunger cavity (4), one end of the built-in pull rod (15) is provided with a first flange (19), and the other end of the built-in pull rod (15) is provided with a second flange (20), the first flange (19) is arranged in the sliding cavity (16), and the diameter of the first flange (19) is greater than the diameter of the first through hole (17), and the second flange (20) is arranged in the plunger cavity (4), and the diameter of the second flange (20) is greater than the diameter of the second through hole (18).

5. The explosion activation device according to claim 2, characterized in that: The invention also comprises a third sealing ring (21); an execution cavity (22) is arranged in the conductive housing (1); the execution cavity (22) is communicated with the handle cavity (10); the actuator (3) is slidably connected in the execution cavity (22); and the actuator (3) and the inner wall of the execution cavity (22) are interference-connected via the third sealing ring (21).

6. The explosive activation device according to claim 5, characterized in that: The actuator (3) is provided with a sliding groove (23), and the limiting ball (6) is slidably connected to the sliding groove (23). The end of the plunger (5) close to the actuator (3) is provided with a limiting groove (24), and the limiting ball (6) is simultaneously engaged in the sliding groove (23) and the limiting groove (24). The sliding direction of the limiting ball (6) in the sliding groove (23) is the direction approaching or moving away from the limiting groove (24). The point on the limiting ball (6) closest to the axis of the actuator (3) is the target point. The minimum distance between the target point and the inner wall of the plunger cavity (4) is a first distance. The distance between the inner wall of the execution cavity (22) and the inner wall of the handle cavity (10) in the radial direction is a second distance. The second distance is greater than the first distance. The inner diameter of the handle cavity (10) is greater than the inner diameter of the execution cavity (22).

7. The explosive activation device according to claim 5, characterized in that: The conductive housing (1) is provided with a spring cavity (25), a positioning flange (26) is provided between the execution cavity (22) and the spring cavity (25), a third through hole (27) is provided on the positioning flange (26), the third through hole (27) connects the spring cavity (25) and the execution cavity (22), the plunger (5) is inserted into the plunger cavity (4), the third through hole (27) and the spring cavity (25), and an annular cavity (25) is formed between the plunger (5) and the spring cavity (25). 28), a compression spring (29) is arranged in the annular cavity (28), a limiting plate (30) is formed on one end of the plunger (5) close to the electrical contact point (8), one end of the compression spring (29) abuts against the end surface of the limiting plate (30) away from the electrical contact point (8), the other end of the compression spring (29) abuts against the end surface of the positioning flange (26) away from the actuator (3), and the end surface of the limiting plate (30) close to the electrical contact point (8) is in contact with or separated from the electrical contact point (8).

8. The explosive activation device according to claim 1, characterized in that: A plurality of the electrical contact points (8) are arranged on the insulating base (7), and the plurality of electrical contact points (8) are mutually redundant contact points.

9. An emergency ejection seat, characterized in that: It comprises an explosion activation device as claimed in any one of claims 1 to 8, wherein an explosive device is connected to the explosion activation device.

10. An aircraft, characterized in that: Comprising the emergency ejection seat as claimed in claim 9.

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