Structure for preventing misfiring of magnetic backseat generator

Abstract

The utility model discloses a structure of anti -magnetic back seat generator error ignition, relate to generator safety technical field, including armature and the axial relative motion's magnetic core, the rear end of magnetic core is equipped with mechanical safety device, and this device includes: the through hole of being located at the rear end of magnetic core shell, the metal shearing wire that passes through the through hole, two ends of the metal shearing wire are fixedly connected to the elastic body safety latch, the metal shearing wire is configured as the relative position of constraint magnetic core and armature below the preset ignition force, and breaks when reaching the preset ignition force, releases the axial movement of magnetic core and passes through the armature and generates electricity, the utility model discloses anti -error ignition reliably, simple structure, easy installation maintenance.

Description

Technical Field

[0001] This utility model relates to the field of generator safety technology, and more specifically to a structure for preventing accidental activation of a magnetic rear seat generator. Background Technology

[0002] The magnetic backrest generator is a core component of the ammunition fuse. Its working principle is that electrical energy is generated when the magnetic core and armature move relative to each other, triggering the ammunition to disarm. However, in the current technology, there is no mechanical constraint between the magnetic core and the armature. During the transportation or handling of ammunition, external vibration or accidental impact can easily cause unexpected relative movement between the magnetic core and the armature, leading to false power generation and accidental disarming of the ammunition, posing a significant safety hazard. Utility Model Content

[0003] The purpose of this invention is to solve the technical problem of accidental triggering of existing magnetic backrest generators due to vibration or external force. This invention provides a structure to prevent accidental firing of magnetic backrest generators. By constraining the movement of the magnetic core with shear wires, the magnetic core is released only when a preset firing force is reached, ensuring the absolute safety of ammunition transportation and handling.

[0004] The technical solution adopted by this utility model is as follows: a structure for preventing accidental firing of a magnetic rear seat generator, including an armature and a magnetic core that can move axially relative to each other. The rear end of the magnetic core is provided with a mechanical safety device, which includes: a through hole at the rear end of the magnetic core housing; a metal shear wire passing through the through hole; both ends of the metal shear wire are fixedly connected to a spring-loaded safety bolt; the metal shear wire is configured to constrain the relative position of the magnetic core and the armature when the firing force is lower than a preset firing force, and to break when the preset firing force is reached, releasing the magnetic core to move axially and generate electricity through the armature.

[0005] Preferably, the metal shearing wire is made of electrolytic copper.

[0006] Preferably, it also includes a fixing seat, one end of which is provided with an annular boss, and a positioning hole corresponding to the through hole is formed on the annular boss. An inner cavity is formed inside the fixing seat located at the annular boss end, and a magnetic core movable cavity is formed at the other end. The magnetic core movable cavity is connected to the inner cavity. The armature is engaged with the inner cavity. One end of the magnetic core extends from the armature into the magnetic core movable cavity, and the other end of the magnetic core extends from the armature into the annular boss, and is limited by a metal shear wire and the positioning hole.

[0007] Preferably, the metal shear wire has connecting rings at both ends, and the connecting rings are detachably connected to the fixing parts of the bullet safety bolt.

[0008] Preferably, there are two through holes, which are symmetrically distributed radially along the circumference of the magnetic core. Preferably, the fixing seat and the annular boss are integrally formed.

[0009] Preferably, the inner cavity is a stepped cavity, and the end of the armature is engaged with the stepped surface of the inner cavity.

[0010] Preferably, the magnetic core has limiting flanges at both ends with a diameter larger than that of the magnetic core body, wherein one limiting flange is located inside the movable cavity of the magnetic core and the other limiting flange is located inside the annular boss.

[0011] Preferably, the surface of the electrolytic copper metal shearing wire is covered with an anti-oxidation coating.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: This invention is highly compatible and can directly modify existing ammunition fuses without altering the main structure. It only requires mechanical locking of the magnetic core via a shear wire to completely eliminate the risk of accidental firing due to vibration or external force during transportation / handling. Using electrolytic copper as the material for the metal shear wire allows for precise control of the preset firing force. Attached Figure Description

[0013] This utility model will be described by way of example and with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the isometric structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model from another perspective; Figure 3 This is a cross-sectional structural schematic diagram of the present invention; Figure 4 This is a schematic diagram of the assembly state of the armature, magnetic core, and metal shear wire of this utility model; Figure 5 This is a cross-sectional view of the armature, magnetic core, and metal shear wire of this utility model in an assembled state; Figure 6 This is a schematic diagram of the fixing base structure of this utility model; Figure 7 This is a cross-sectional view of the fixing base of this utility model; The markings in the diagram are: 1-armature, 2-magnetic core, 3-through hole, 4-metal shear wire, 5-fixed base, 51-positioning hole, 52-annular boss, 53-inner cavity, 54-magnetic core movable cavity. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0016] In one embodiment of this utility model, such as Figure 1-7 As shown, this embodiment provides a structure for preventing accidental firing of a magnetic rear-mounted generator, including an armature 1 and a magnetic core 2 that can move axially relative to the armature. The rear end of the magnetic core 2 is provided with a mechanical safety device, which includes a through hole 3 located at the rear end of the housing of the magnetic core 2 and a metal shear wire 4 passing through the through hole 3. The two ends of the metal shear wire 4 are fixedly connected to the safety bolt of the projectile and are configured to constrain the relative position of the magnetic core 2 and the armature 1 when the firing force is lower than a preset firing force, and break when the preset firing force is reached, releasing the magnetic core 2 to move axially to generate electricity through the armature 1.

[0017] In another embodiment of this utility model, the metal shear wire 4 is made of electrolytic copper, which has good shear strength and machinability, and can accurately control the magnitude of the preset firing force.

[0018] In another embodiment of this utility model, the anti-misfire structure further includes a fixing base 5. One end of the fixing base 5 is provided with an annular boss 52, and the annular boss 52 has a positioning hole 51 corresponding to the through hole 3. The fixing base 5 located at the annular boss 52 end has an inner cavity 53, and the other end has a movable cavity for the magnetic core 2, which communicates with the inner cavity 53. The armature 1 is engaged with the inner cavity 53. One end of the magnetic core 2 extends from the armature 1 into the movable cavity of the magnetic core 2, and the other end of the magnetic core 2 extends from the armature 1 into the annular boss 52, and is limited by the metal shear wire 4 and the positioning hole 51.

[0019] In another embodiment of this utility model, the two ends of the metal shear wire 4 are provided with connecting rings, and the connecting rings are detachably connected to the fixing parts of the bullet safety bolt, which facilitates the installation and replacement of the metal shear wire 4.

[0020] In another embodiment of this utility model, the number of through holes 3 is two, and they are symmetrically distributed radially along the circumference of the magnetic core 2, which can uniformly constrain the magnetic core 2 and improve the reliability of the safety device.

[0021] In another embodiment of this utility model, the fixing seat 5 and the annular boss 52 are integrally formed, which ensures the strength and stability of the structure.

[0022] In another embodiment of this utility model, the inner cavity 53 is a stepped cavity, and the end of the armature 1 is engaged with the stepped surface of the inner cavity 53, which facilitates the positioning and fixing of the armature 1.

[0023] In another embodiment of the present invention, the magnetic core 2 is provided with limiting flanges at both ends with a diameter larger than that of the main body of the magnetic core 2. One limiting flange is located in the movable cavity of the magnetic core 2, and the other limiting flange is located in the annular boss 52, which can prevent the magnetic core 2 from deviating from the predetermined track during movement.

[0024] In another embodiment of this utility model, the surface of the electrolytic copper metal shearing wire 4 is covered with an anti-oxidation coating, which improves the corrosion resistance of the metal shearing wire 4 and extends its service life.

[0025] The working principle of this utility model is as follows: The magnetic core 2 is installed into the inner cavity 53 of the fixed base 5, and the armature 1 is snapped into the stepped surface of the inner cavity 53; the front end of the magnetic core 2 extends into the movable cavity of the magnetic core 2, and the rear end extends into the annular boss 52, with limiting flanges at both ends restricting its axial displacement. An electrolytic copper wire with a diameter of 0.9 mm passes through the through hole 3 of the magnetic core 2 with a diameter of 1.0 mm and the positioning hole 51 of the boss, and both ends are fixed to the safety bolt of the projectile via connecting rings. In the safe state, the copper wire constrains the position of the magnetic core 2, and vibration cannot move it; in the firing state, when the ammunition is fired, the impact force breaks the copper wire, and the magnetic core 2, under the action of inertia, passes through the armature 1 at high speed to generate electricity, triggering the release of the safety bolt.

[0026] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A structure for preventing misfiring of a magnetically shielded rear seat generator, comprising an armature (1) and a magnetic core (2) which can move axially relative to each other, characterized in that: The rear end of the magnetic core (2) is provided with a mechanical safety device, which includes: a through hole (3) located at the rear end of the magnetic core housing; a metal shear wire (4) passing through the through hole (3); the two ends of the metal shear wire (4) are fixedly connected to the safety bolt of the projectile; the metal shear wire (4) is configured to constrain the relative position of the magnetic core (2) and the armature (1) when the firing force is lower than the preset firing force, and break when the preset firing force is reached, releasing the magnetic core (2) to move axially and generate electricity through the armature (1).

2. The structure of claim 1, wherein: The metal shear wire (4) is made of electrolytic copper.

3. The structure of claim 1, wherein: It also includes a fixing seat (5), one end of which is provided with an annular boss (52), and the annular boss (52) is provided with a positioning hole (51) corresponding to the through hole (3). The fixing seat (5) located at the annular boss (52) has an inner cavity (53) inside, and the other end has a magnetic core movable cavity (54). The magnetic core movable cavity (54) is connected to the inner cavity (53). The armature (1) is engaged with the inner cavity (53). One end of the magnetic core (2) extends from the armature (1) into the magnetic core movable cavity (54), and the other end of the magnetic core (2) extends from the armature (1) into the annular boss (52), and is limited by the metal shear wire (4) and the positioning hole (51).

4. The structure of claim 3, wherein: The metal shear wire (4) has connecting rings (6) at both ends, and the connecting rings (6) are detachably connected to the fixing parts of the projectile safety bolt.

5. The structure of claim 1, wherein: The number of through holes (3) is two, and they are symmetrically distributed along the circumferential and radial directions of the magnetic core (2).

6. The structure of claim 3, wherein: The fixed base (5) and the annular boss (52) are integrally formed.

7. The structure of claim 3, wherein: The inner cavity (53) is a stepped cavity, and the end of the armature (1) is engaged with the stepped surface of the inner cavity (53).

8. The structure of claim 3, wherein: The magnetic core (2) has limiting flanges at both ends with a diameter larger than that of the magnetic core body. One limiting flange is located in the magnetic core movable cavity (54), and the other limiting flange is located in the annular boss (52).

9. The structure according to claim 2, characterized in that: The surface of the metal shear wire (4) is covered with an anti-oxidation coating.

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