Mounting structure and method for improving shock resistance of magnetic trigger
By using a superimposed damping device composed of copper ring, ring magnet and sealing ring in the magnetic trigger, the superposition of air and magnetic resistance is solved, and the problem of mistrigger caused by vibration at high sensitivity is improved, and the vibration resistance is improved. Reduced costs.
Patent Information
- Application Number
- CN202411531641.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2024-12-13
AI Technical Summary
Existing magnetic triggers are prone to false triggering due to external vibrations under high sensitivity, and need to improve their anti-seismic ability to avoid false triggering.
Using a variety of damping superposition installation structures, including copper rings, annular magnets and sealing rings, through a superposition damping device composed of air resistance and magnetic resistance, the slider forms an air chamber and air passage during movement, and uses air and magnetic resistance to superposition. Reduce the amplitude of movement and improve the earthquake resistance.
It effectively improves the shock resistance of magnetic triggers, avoids mistriggering, and reduces parts processing and material costs, and improves durability.
Smart Images
Figure CN119132796A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of magnetic trigger equipment, and in particular to a mounting structure and method for improving the earthquake resistance of a magnetic trigger. Background Art
[0002] A magnetic trigger is a device that uses the working principle of mutual repulsion between like polarities of magnets to trigger an action. For example, Chinese patent publication number CN102549683A discloses a magnetic trigger, which includes at least a yoke with an armature opening, in which the armature is arranged. 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, the permanent magnet is arranged together with a base extending between the armature and the permanent magnet in a first end region of the armature, 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 anti-vibration ability of the magnetic trigger. Summary of the invention
[0004] In view of the shortcomings of the prior art, the present invention proposes an installation structure and method for improving the seismic resistance of a magnetic trigger, which 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 present invention provides an installation structure for improving the seismic resistance of a magnetic trigger, comprising: a front plate and a slider, wherein a copper ring protruding inward is arranged on the inner side surface of the front plate, a sealing ring arranged opposite to the copper ring is installed on the inner side surface of the slider, 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.
[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, and the annular magnet acts 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. At this time, the volume of the air chamber increases, and air flows into the air chamber from the first air channel. Since the cross-sectional area of the first air channel is much smaller than the cross-sectional area of the piston, the speed of air flowing into the air chamber is much greater than the speed of piston movement. During the air flow, a resistance is generated on the piston. The smaller the cross-sectional area of the first air channel, the greater the resistance. This resistance limits the movement amplitude of the piston, so that the piston will not enter the gravitational range of the attracting armature to cause false triggering. In order to increase the air resistance, a concentric sealing ring is added outside the magnet, and a second air channel is formed between the outer wall of the copper ring and the inner wall of the sealing ring, thereby effectively increasing the length of the entire air channel. When the kinetic energy disappears, 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, and a resistance is generated in the process of generating eddy currents. This resistance combined with the resistance of the air will make the piston's movement smaller and the magnetic trigger's shock resistance higher. Moreover, in the early stage of the development of this solution, there was only air damping when the solution was first made, but during the development, it was found that the airway of the air damping must be very small to achieve the required damping effect, which means that the sliding gap of the piston must be very small, so 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 copper rings and using the copper rings to cut the magnetic lines of force of the magnet to generate eddy currents, and then forming magnetic damping, the damping loss caused by the increase in the gap can be well compensated, which can reduce both the processing cost and the material cost, and improve durability.
[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 is difficult to form an effective resistance between the outer wall of the annular magnet and the inner wall of the copper ring, which will reduce the anti-seismic ability of the magnetic trigger. The width of the first air channel should 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 not only ensure that the magnetic trigger has good sensitivity, but also improve the anti-seismic ability 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 is difficult to form an effective resistance between the outer wall of the copper ring and the inner wall of the sealing ring, which will reduce the anti-seismic ability 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 not only ensure that the magnetic trigger has good sensitivity, but also improve the anti-seismic ability 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 attracting 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. When the slider moves, 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 a magnetic resistance will be generated in the process of generating the eddy currents. The superposition of the magnetic resistance and the air resistance further reduces the movement amplitude of the slider, thereby improving the seismic resistance.
[0012] Preferably, a communicating air passage is 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 for improving the anti-seismic capability of the magnetic trigger provided by the present invention 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 of the sliding device of the magnetic trigger during the sliding process, adopts multiple damping superpositions to improve the anti-seismic force, 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.
[0015] (2) The method for improving the anti-seismic capability of the magnetic trigger makes full use of 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.
[0016] (3) In the early stage of the development of this solution, there was only air damping when the solution was first made. However, it was found during the development that the air duct of the air damping must be very small to achieve the required damping effect. This means that the sliding gap of the piston must 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 copper rings and using the copper rings to cut the magnetic lines of force of the magnet to generate eddy currents, and then forming magnetic damping, the damping loss caused by the increase in the gap can be well compensated, which can reduce both the processing cost and the material cost, and improve durability. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a front view of the three-dimensional structure assembly of the present invention.
[0018] Figure 2 It is a front view of the three-dimensional structure assembly of the present invention.
[0019] Figure 3 It is a three-dimensional structural cross-sectional view of the present invention.
[0020] Figure 4 It is a schematic diagram of the structure in which the annular magnet in the present invention is completely inserted into the copper ring.
[0021] Figure 5 It is a structural schematic diagram of the annular magnet in the present invention when it starts to withdraw from the copper ring.
[0022] 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
[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary persons in the art without creative work are within the scope of protection of the present invention.
[0024] Embodiment 1: A mounting structure for improving the anti-vibration capability of a magnetic trigger.
[0025] Reference Figures 1 to 5As shown, a mounting structure for improving the anti-seismic ability of a magnetic trigger comprises: a front plate 1 and a slider 3, wherein the front plate 1 is fixed and the slider 3 can slide relative to the front plate 1, an inwardly protruding copper ring 2 is arranged on the inner side surface of the front plate 1, the inner end of the copper ring 2 is closed to the front plate 1, and the outer end of the copper ring 2 is open, a sealing ring 4 arranged opposite to the copper ring 2 is arranged on the inner side surface of the slider 3, an annular magnet 5 is arranged at the center of the sealing ring 4, a through hole 6 is arranged on the back side of the slider 3 opposite to the mounting position of the annular magnet 5, so that the magnet 5 installed on the inner side surface of the slider 3 can better perform magnetic adsorption with the outer attracting armature, the centers of the copper ring 2, the sealing ring 4 and the annular magnet 5 are located on the same straight line, the diameter of the copper ring 2 is larger than the diameter of the annular 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, and 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.
[0026] In this embodiment, during actual operation, when the magnetic trigger is in the reset state (such as Figure 4 As shown in FIG. 1 , 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 in FIG. 1 ). Figure 5 As shown), at this time, the volume of the air chamber 9 increases, and the air flows into the air chamber 9 from the first air channel 7. Since the cross-sectional area of the first air channel 7 is much smaller than the cross-sectional area of the piston, the speed of the air flowing into the air chamber 9 is much greater than the speed of the piston movement. During the air flow, a resistance will be generated on the piston. The smaller the cross-sectional area of the first air channel 7, the greater the resistance. This resistance limits the movement range of the piston, so that the piston will not enter the gravitational range of the attracting armature to cause false triggering. In order to increase the air resistance, a concentric sealing ring 4 is added outside the magnet 5, and 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, thereby effectively increasing the length of the entire air channel. When the kinetic energy disappears, the slider 3 returns to the original position of the front plate 1 under the suction of the reset magnet. During the movement of the piston, the copper ring 2 cuts the magnetic lines of force of the magnet 5 to generate eddy currents, and a resistance will be generated in the process of generating eddy currents. This resistance combined with the resistance of the air will make the movement range of the piston smaller, and the anti-seismic ability of the magnetic trigger will be higher.
[0027] In the early stage of the research and development of the present invention, there was only air damping when the initial plan was made. However, it was found during the research and development that the air channel of the air damping must be very small to achieve the required damping effect, which means that the sliding gap of the piston must 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, the magnetic lines of force of the copper ring 2 on the magnet 5 are cut to generate eddy currents, and then magnetic damping is formed, which can well compensate for the damping loss caused by the increase in the gap, which can reduce both the processing cost and the material cost, and improve the durability.
[0028] 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 is difficult to form an effective resistance between the outer wall of the annular magnet 5 and the inner wall of the copper ring 2, which will reduce the anti-seismic ability of the magnetic trigger. 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 is too large, which will reduce the sensitivity of the magnetic trigger. Experiments have shown that when the width of the first air channel 7 is 1 mm, it can not only ensure that the magnetic trigger has good sensitivity, but also improve the anti-seismic ability of the magnetic trigger. 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 is difficult to form an effective resistance between the outer wall of the copper ring 2 and the inner wall of the sealing ring 4, which will reduce the anti-seismic ability of the magnetic trigger. 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 is too large, which will also reduce the sensitivity of the magnetic trigger. Experiments have shown that when the width of the second air channel 8 is 1 mm, it can ensure that the magnetic trigger has good sensitivity and improve the anti-vibration ability of the magnetic trigger.
[0029] The installation structure for improving the seismic resistance of the magnetic trigger is cleverly designed, making full use of the damping effect generated by the sliding device of the magnetic trigger during the sliding process, using 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.
[0030] Embodiment 2: A method for improving the anti-vibration capability of a magnetic trigger.
[0031] Reference Figures 1 to 5As shown, a method for improving the seismic resistance of a magnetic trigger includes the installation structure as described in Example 1, wherein a superimposed damping device composed of air resistance and magnetic resistance is formed between the copper ring 2, the annular magnet 5 and the sealing ring 4, and when the slider 3 moves, an air chamber 9 with an air channel is formed between the annular magnet 5 and the copper ring 2, and the annular magnet 4 acts as a piston. When the slider 3 drives the annular magnet 5 to move relative to the copper ring 2, the volume of the air chamber 9 will change, and air will flow into or out of the air chamber 9 from the air channel, generating air resistance, thereby limiting the movement amplitude of the slider 3; and when the slider 3 drives the annular magnet 5 to move, the copper ring 2 cuts the magnetic lines of force of the annular magnet 5 to generate eddy currents, and a magnetic resistance is generated in the process of generating the eddy currents. The magnetic resistance and the air resistance are superimposed to further reduce the movement amplitude of the slider 3, thereby further improving the seismic resistance.
[0032] Specifically, when the magnetic trigger is in the reset state (such as Figure 4 As shown in FIG. 1 , 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 in FIG. 1 ). Figure 5 As shown), at this time, the volume of the air chamber 9 increases, and the air flows into the air chamber 9 from the first air channel 7. Since the cross-sectional area of the first air channel 7 is much smaller than the cross-sectional area of the piston, the speed of the air flowing into the air chamber 9 is much greater than the speed of the piston movement. During the air flow, a resistance will be generated on the piston. The smaller the cross-sectional area of the first air channel 7, the greater the resistance. This resistance limits the movement range of the piston, so that the piston will not enter the gravitational range of the attracting armature to cause false triggering. In order to increase the air resistance, a concentric sealing ring 4 is added outside the magnet 5, and 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, thereby effectively increasing the length of the entire air channel. When the kinetic energy disappears, the slider 3 returns to the original position of the front plate 1 under the suction of the reset magnet. During the movement of the piston, the copper ring 2 cuts the magnetic lines of force of the magnet 5 to generate eddy currents, and a resistance will be generated in the process of generating eddy currents. This resistance combined with the resistance of the air will make the movement range of the piston smaller, and the anti-seismic ability of the magnetic trigger will be higher.
[0033] The 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, reduces the movement amplitude of the slider by superimposing the magnetic resistance and the air resistance, and improves the anti-seismic capability of the magnetic trigger.
[0034] 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, so 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 arranged on the inner side surface of the front plate, a sealing ring arranged opposite to the copper ring is installed on the inner side surface of the slider, 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, 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 anti-seismic capability of a magnetic trigger according to claim 1, characterized in that: After the annular magnet is inserted into the copper ring, an air chamber is formed between the annular magnet and the copper ring, a first air channel is formed between the outer wall of the annular magnet and the inner wall of the copper ring, 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 as claimed in claim 2, characterized in that: 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 as claimed in claim 2, characterized in that: 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 as claimed in claim 1, characterized in that: A through hole is arranged on the back side of the sliding block facing the installation position of the annular magnet.
6. A method for improving the seismic resistance of a magnetic trigger, characterized in that: It includes an installation structure as described in any one of claims 1 to 5, 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. When the slider moves, 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 and limiting the movement range 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 a magnetic resistance is generated in the process of generating the eddy currents. The magnetic resistance and the air resistance are superimposed to further reduce the movement range of the slider and improve the seismic resistance.
7. The method for improving the anti-seismic capability of a magnetic trigger as claimed in claim 6, characterized in that: A communicating air passage is reserved 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.