Mounting structure for improving shock resistance of magnetic trigger

Abstract

The utility model provides a mounting structure for improving shock resistance of a magnetic trigger, which comprises a front plate and a sliding block, a copper ring protruding inwards is arranged on the inner side surface of the front plate, a sealing ring opposite to the copper ring is arranged on the inner side surface of the sliding block, an annular magnet is arranged in the center of the sealing ring, and the annular magnet is arranged on the inner side surface of the sliding block. The circle centers of the copper ring, the sealing ring and the annular magnet are located on the same straight line, the diameter of the copper ring is larger than that of the annular magnet, and the diameter of the sealing ring is larger than that of the copper ring. The mounting structure for improving the shock resistance of the magnetic trigger adopts a hanging buckle type structure, and is easy to construct, high in mounting efficiency and detachable. According to the utility model, the damping effect generated by the sliding device of the magnetic trigger in the sliding process is fully utilized, the shock resistance is improved by overlapping multiple kinds of damping, and the damper and the sliding block of the magnetic trigger share one set of sliding device, so that the influence of static resistance of a common damper is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic trigger equipment, in particular to a mounting structure for improving the anti-seismic capability of a magnetic trigger. Background Art

[0002] A magnetic trigger is a device that triggers an action by using the working principle of mutual repulsion between magnets of the same polarity. For example, Chinese patent publication number CN102549683A discloses a magnetic trigger, which includes at least a yoke having an armature opening, and an armature is arranged in the yoke. The armature is coaxially surrounded by at least a portion of a coil body having at least one excitation coil and is acted upon by a preloaded spring element, and when no current flows through the excitation coil, the armature is maintained in a first end position due to the holding force of a permanent magnet, and the permanent magnet is arranged in a first end region of the armature together with a base extending between the armature and the permanent magnet, and the second end position of the armature is obtained by briefly passing an electric current through the excitation coil together with reducing the magnetic holding force and the subsequent effective spring force.

[0003] When the existing magnetic trigger needs to be more sensitive, it is easy for the magnetic trigger to be falsely triggered due to external vibration interference. In order to avoid the false triggering of the high-sensitivity magnetic trigger due to external vibration interference, it is necessary to improve the shock resistance of the magnetic trigger. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model proposes an installation structure for improving the seismic resistance of the magnetic trigger. It fully utilizes the damping effect generated by the sliding device of the magnetic trigger during the sliding process, adopts multiple damping superpositions to improve the seismic resistance, and the damper and the slider of the magnetic trigger share a set of sliding devices, avoiding the influence of the static resistance of ordinary dampers.

[0005] To implement the above technical solution, the utility model provides an installation structure for improving the seismic resistance of a magnetic trigger, comprising: a front plate and a slider, wherein an inwardly protruding copper ring is provided on the inner side surface of the front plate, a sealing ring is installed on the inner side surface of the slider and is arranged opposite to the copper ring, an annular magnet is installed at the center of the sealing ring, the centers of the copper ring, the sealing ring and the annular magnet are located on the same straight line, and the diameter of the copper ring is greater than the diameter of the annular magnet, and the diameter of the sealing ring is greater than the diameter of the copper ring.

[0006] Preferably, after the annular magnet is inserted into the copper ring, an air chamber is formed between the annular magnet and the copper ring, and a first air channel is formed between the outer wall of the annular magnet and the inner wall of the copper ring, and a second air channel is formed between the outer wall of the copper ring and the inner wall of the sealing ring, the second air channel is connected to the first air channel, and the first air channel is connected to the air chamber.

[0007] In the above technical solution, during actual operation, when the magnetic trigger is in the reset state, the annular magnet and the copper ring form an air chamber with an air channel, with the annular magnet acting as a piston. When the magnetic trigger is vibrated, the slider breaks free from the suction of the reset magnet and detaches from the front plate. The volume of the air chamber increases, and air flows into the air chamber through the first air channel. Because the cross-sectional area of ​​the first air channel is much smaller than that of the piston, the speed of air entering the air chamber is much faster than the speed of the piston's movement. This air flow creates resistance on the piston. The smaller the cross-sectional area of ​​the first air channel, the greater the resistance. This resistance limits the piston's range of motion, preventing it from entering the attractive range of the armature and causing false triggering. To increase air resistance, a concentric sealing ring is added outside the magnet. A second air channel is formed between the outer wall of the copper ring and the inner wall of the sealing ring, effectively increasing the length of the entire air channel. When the kinetic energy dissipates, the slider returns to its original position in contact with the front plate under the suction of the reset magnet. During the movement of the piston, the copper ring cuts the magnetic lines of force of the magnet to generate eddy currents, which in the process of generating eddy currents will generate resistance. This resistance combined with the resistance of the air will make the movement amplitude of the piston smaller and the shock resistance of the magnetic trigger higher.

[0008] Preferably, the width of the first air channel is 0.5-2 mm. The width of the first air channel should not be too large, otherwise it will be difficult to form effective resistance between the outer wall of the annular magnet and the inner wall of the copper ring, which will reduce the shock resistance of the magnetic trigger. The width of the first air channel should also not be too small, otherwise the resistance between the outer wall of the annular magnet and the inner wall of the copper ring will be too large, which will reduce the sensitivity of the magnetic trigger. Experiments have shown that when the width of the first air channel is 0.5-2 mm, it can both ensure good sensitivity of the magnetic trigger and improve the shock resistance of the magnetic trigger.

[0009] Preferably, the width of the second air channel is 0.5-2 mm. The width of the second air channel should not be too large, otherwise it will be difficult to form effective resistance between the outer wall of the copper ring and the inner wall of the sealing ring, which will reduce the shock resistance of the magnetic trigger. The width of the second air channel should not be too small, otherwise the resistance between the outer wall of the copper ring and the inner wall of the sealing ring will be too large, which will also reduce the sensitivity of the magnetic trigger. Experiments have shown that when the width of the second air channel is 0.5-2 mm, it can ensure that the magnetic trigger has good sensitivity and improve the shock resistance of the magnetic trigger.

[0010] Preferably, a through hole is provided on the back side of the slider facing the mounting position of the annular magnet, so that the magnet mounted on the inner side of the slider can be better magnetically adsorbed with the armature.

[0011] The present invention also provides a method for improving the seismic resistance of a magnetic trigger, including the above-mentioned installation structure for improving the seismic resistance of a magnetic trigger, wherein a superimposed damping device composed of air resistance and magnetic resistance is formed between the copper ring, the annular magnet and the sealing ring. During the movement of the slider, an air chamber with an air channel is formed between the annular magnet and the copper ring, and the annular magnet acts as a piston. When the slider drives the annular magnet to move relative to the copper ring, the volume of the air chamber will change, and air will flow into or out of the air chamber from the air channel, generating air resistance, thereby limiting the movement amplitude of the slider. In the process of the slider driving the annular magnet to move, the copper ring cuts the magnetic lines of force of the magnet to generate eddy currents, and in the process of generating the eddy currents, a magnetic resistance will be generated. The superposition of the magnetic resistance and the air resistance will further reduce the movement amplitude of the slider, thereby improving the seismic resistance.

[0012] Preferably, communicating air passages are retained between the outer wall of the annular magnet and the inner wall of the copper ring, and between the outer wall of the copper ring and the inner wall of the sealing ring.

[0013] The beneficial effects of the installation structure provided by the utility model for improving the anti-seismic capability of the magnetic trigger are:

[0014] (1) The mounting structure for improving the anti-seismic capability of the magnetic trigger is cleverly designed. It makes full use of the damping effect generated by the sliding device of the magnetic trigger during the sliding process, and adopts multiple damping superpositions to improve the anti-seismic force. Moreover, the damper and the slider of the magnetic trigger share a set of sliding devices, thus avoiding the influence of the static resistance of ordinary dampers.

[0015] (2) This method for improving the anti-seismic capability of the magnetic trigger fully utilizes the air resistance and magnetic resistance during the movement of the slider relative to the front plate, and reduces the movement amplitude of the slider by superimposing the magnetic resistance and air resistance, thereby improving the anti-seismic capability of the magnetic trigger. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of the three-dimensional structure assembly of the utility model.

[0017] Figure 2 This is a front view of the three-dimensional structure assembly of the utility model.

[0018] Figure 3 It is a three-dimensional structural sectional view of the utility model.

[0019] Figure 4 This is a schematic diagram of the structure in which the annular magnet is completely inserted into the copper ring in the present invention.

[0020] Figure 5 This is a structural diagram of the utility model when the annular magnet begins to retreat from the copper ring.

[0021] In the figure: 1. front plate; 2. copper ring; 3. slider; 4. sealing ring; 5. magnet; 6. through hole; 7. first air channel; 8. second air channel; 9. air chamber. DETAILED DESCRIPTION

[0022] The following is a clear and complete description of the technical solutions in the embodiments of the present invention, in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary persons in this field without creative work are within the scope of protection of the present invention.

[0023] Embodiment: A mounting structure for improving the seismic resistance of a magnetic trigger.

[0024] Reference Figures 1 to 5 As shown, a mounting structure for improving the seismic resistance of a magnetic trigger comprises: a front plate 1 and a slider 3, the front plate 1 being fixed, the slider 3 being able to slide relative to the front plate 1, the inner side surface of the front plate 1 being provided with an inwardly protruding copper ring 2, the inner end of the copper ring 2 being closed to the front plate 1, and the outer end of the copper ring 2 being open, a sealing ring 4 being mounted on the inner side surface of the slider 3 opposite to the copper ring 2, a ring magnet 5 being mounted at the center of the sealing ring 4, a through hole 6 being provided on the back side of the slider 3 opposite to the mounting position of the ring magnet 5, so that the magnet 5 mounted on the inner side surface of the slider 3 can be better magnetically adsorbed with the outer attracting armature, the centers of the copper ring 2, the sealing ring 4 and the ring magnet 5 are located on the same straight line, the diameter of the copper ring 2 is larger than the diameter of the ring magnet 5, and the diameter of the sealing ring 4 is larger than the diameter of the copper ring 2. After the annular magnet 5 is inserted into the copper ring 2, an air chamber 9 is formed between the annular magnet 5 and the copper ring 2, and a first air channel 7 is formed between the outer wall of the annular magnet 5 and the inner wall of the copper ring 2. A second air channel 8 is formed between the outer wall of the copper ring 2 and the inner wall of the sealing ring 4. The second air channel 8 is connected to the first air channel 7, and the first air channel 7 is connected to the air chamber 9.

[0025] In this embodiment, when the magnetic trigger is in the reset state (such as Figure 4 As shown), the annular magnet 5 is inserted into the copper ring 2, and the annular magnet 5 and the copper ring 2 form an air chamber 9 with an air passage, and the annular magnet 5 acts as a piston. When the magnetic trigger is vibrated, the slider 3 breaks free from the suction of the reset magnet and detaches from the front plate 1 (as shown). Figure 5As shown, the volume of air chamber 9 increases, and air flows into it from first air channel 7. Because the cross-sectional area of ​​first air channel 7 is much smaller than that of the piston, the velocity of air entering air chamber 9 is much greater than the velocity of the piston's movement. This airflow creates resistance on the piston. The smaller the cross-sectional area of ​​first air channel 7, the greater the resistance. This resistance limits the piston's range of motion, preventing it from entering the attractive force of the armature and causing false triggering. To increase air resistance, a concentric sealing ring 4 is added outside magnet 5. A second air channel 8 is formed between the outer wall of copper ring 2 and the inner wall of sealing ring 4, effectively increasing the length of the entire air channel. When the kinetic energy dissipates, slider 3 returns to its original position against front plate 1 under the attraction of the reset magnet. During piston motion, the magnetic lines of force of copper ring 2 on magnet 5 cut through, generating eddy currents. This eddy current generation generates resistance. This resistance, combined with the air resistance, further reduces the piston's range of motion, enhancing the magnetic trigger's shock resistance.

[0026] In this embodiment, the width of the first air channel 7 is 1 mm. The width of the first air channel 7 should not be too large, otherwise it will be difficult to form effective resistance between the outer wall of the annular magnet 5 and the inner wall of the copper ring 2, which will reduce the magnetic trigger's ability to withstand shock. The width of the first air channel 7 should not be too small, otherwise the resistance between the outer wall of the annular magnet 5 and the inner wall of the copper ring 2 will be too great, reducing the sensitivity of the magnetic trigger. Experiments have shown that when the width of the first air channel 7 is 1 mm, it can both ensure good sensitivity of the magnetic trigger and improve its ability to withstand shock. The width of the second air channel 8 is 1 mm. The width of the second air channel 8 should not be too large, otherwise it will be difficult to form effective resistance between the outer wall of the copper ring 2 and the inner wall of the sealing ring 4, which will reduce the magnetic trigger's ability to withstand shock. The width of the second air channel 8 should not be too small, otherwise the resistance between the outer wall of the copper ring 2 and the inner wall of the sealing ring 4 will be too great, similarly reducing the sensitivity of the magnetic trigger. Experiments have shown that when the width of the second air channel 8 is 1mm, it can not only ensure that the magnetic trigger has good sensitivity, but also improve the anti-vibration ability of the magnetic trigger. In the early stage of the development of this solution, there was only air damping when the solution was first made. However, during the development, it was found that the air channel of the air damping had to be very small to achieve the required damping effect. This means that the sliding gap of the piston had to be very small. In this way, the precision of the parts processing must be very high. As the precision increases, the production cost also increases significantly. In order to reduce the cost, the gap can only be made larger. However, it was accidentally discovered that by adding a copper ring 2 and using the copper ring 2 to cut the magnetic lines of force of the magnet 5 to generate eddy currents, thereby forming magnetic damping, the damping loss caused by the increase in the gap can be well compensated, which can reduce both processing costs and material costs, and improve durability.

[0027] The installation structure for improving the seismic resistance of the magnetic trigger is cleverly designed. It fully utilizes the damping effect generated by the sliding device of the magnetic trigger during the sliding process, adopts multiple damping superpositions to improve the seismic resistance, and the damper and the slider of the magnetic trigger share a set of sliding devices, thus avoiding the influence of the static resistance of ordinary dampers.

[0028] The above description is only a preferred embodiment of the present invention, but the present invention should not be limited to the contents disclosed in the embodiment and the drawings. Therefore, any equivalent or modification completed without departing from the spirit disclosed in the present invention shall fall within the scope of protection of the present invention.

Claims

1. A mounting structure for improving the seismic resistance of a magnetic trigger, characterized in that include: A front plate and a slider, wherein an inwardly protruding copper ring is provided on the inner side surface of the front plate, a sealing ring is installed on the inner side surface of the slider and is arranged opposite to the copper ring, an annular magnet is installed at the center of the sealing ring, the centers of the copper ring, the sealing ring and the annular magnet are located on the same straight line, and the diameter of the copper ring is larger than the diameter of the annular magnet, and the diameter of the sealing ring is larger than the diameter of the copper ring.

2. The mounting structure for improving the seismic resistance of a magnetic trigger according to claim 1, wherein: After the annular magnet is inserted into the copper ring, an air chamber is formed between the annular magnet and the copper ring, and a first air channel is formed between the outer wall of the annular magnet and the inner wall of the copper ring, and a second air channel is formed between the outer wall of the copper ring and the inner wall of the sealing ring. The second air channel is connected to the first air channel, and the first air channel is connected to the air chamber.

3. The mounting structure for improving the anti-seismic capability of a magnetic trigger according to claim 2, wherein: The width of the first air channel is 0.5-2 mm.

4. The mounting structure for improving the anti-seismic capability of a magnetic trigger according to claim 2, wherein: The width of the second air channel is 0.5-2 mm.

5. The mounting structure for improving the anti-seismic capability of a magnetic trigger according to claim 1, wherein: A through hole is provided on the back side of the slider, facing the installation position of the annular magnet.

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