Stable and reliable high-voltage-resistant high-power multi-point contact type reed switch

Abstract

The utility model relates to the technical field of reed switches, in particular to a stable and reliable high-voltage-resistant high-power multi-point contact type reed switch. The stable and reliable high-voltage-resistant high-power multi-point contact type reed switch comprises a glass tube, a moving plate fixing rod, a beryllium copper straight elastic piece, a silver contact point, a riveting bolt, a contact point contact piece, a contact lower straight elastic piece and a fixing piece, the glass tube serves as a main body of the reed switch and is of a tubular structure, the glass tube is in a closed state, and the moving plate fixing rod and the silver contact point are fixed through the fixing piece. The glass tube is filled with inert gas, one end of the moving plate fixing rod is fixed to the left side in the glass tube, the fixing plate is fixedly installed on the right side in the glass tube, and the copper-plated straight elastic piece is installed at the right end of the moving plate fixing rod through a riveting bolt. The multi-point contact design of the silver contact point and the contact lower straight elastic sheet and the contact point contact sheet and the fixed sheet is adopted, a stable conduction circuit is formed under the action of a magnetic field, the contact reliability of the reed switch under various working conditions is greatly improved, and the risk of poor contact or open circuit is reduced.

Description

Technical Field

[0001] This utility model relates to the field of reed switch technology, and in particular to a stable and reliable high-voltage, high-power, multi-point contact reed switch. Background Technology

[0002] In existing technologies, most reed switches do not employ a multi-point contact process. When ordinary reed switches are in operation, their nickel-iron alloy magnetic reeds are affected by magnetic fields. After the magnetic field is removed, residual magnetism easily remains, causing the reed to fail to spring open quickly, leading to malfunctions. This severely affects product stability and consistency. Under high-voltage and high-power conditions, this problem is even more pronounced, easily causing poor contact or even short circuits, failing to meet the stable switching requirements of complex circuits.

[0003] Therefore, it is necessary to design a stable and reliable high-voltage, high-power, multi-point contact reed switch to solve the above-mentioned technical problems. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings, the technical problem of this utility model is to provide a stable and reliable high-voltage, high-power, multi-point contact reed switch.

[0005] The technical solution of this utility model is: a stable and reliable high-voltage, high-power, multi-point contact reed switch, comprising a glass tube, a moving plate fixing rod, a beryllium copper straight spring, a silver contact point, a riveting bolt, a contact point plate, a lower contact straight spring, and a fixing plate. The glass tube, as the main body of the reed switch, has a tubular structure and is in a closed state, filled with inert gas. One end of the moving plate fixing rod is fixed to the left side inside the glass tube, and the fixing plate is fixedly installed on the right side inside the glass tube. The copper-plated straight spring is installed by a riveting bolt. At the right end of the moving plate fixing rod, the lower contact spring is also installed at the left end of the fixing plate by a rivet bolt. The copper-plated spring and the lower contact spring are arranged opposite each other inside the glass tube. The copper-plated spring is located above the lower contact spring, and the two maintain a certain distance. A silver contact point is provided on the right side of the beryllium copper spring, corresponding to the lower contact spring. The contact point is located inside the glass tube and is located at the bottom end of the beryllium copper spring, opposite to the fixing plate. The two maintain a certain positional relationship in the axial direction of the glass tube.

[0006] Furthermore, both the moving plate fixing rod and the outer end of the fixing plate are provided with through holes for installing screws and for connecting external power sources and loads.

[0007] Furthermore, the elastic modulus of the beryllium copper straight spring sheet and the contact straight spring sheet are in the range of 180-220 GPa, and the fatigue strength is not less than 300 MPa.

[0008] Furthermore, the glass tube is made of high borosilicate glass.

[0009] Furthermore, the silver content of the silver contacts is not less than 92.5%, and the surface is gold-plated.

[0010] Furthermore, reed switches can operate normally in a temperature range of -40°C to 125°C.

[0011] Compared with the prior art, this utility model has the following advantages: 1. It adopts a multi-point contact design with silver contact points and contact springs, contact points and fixed plates, forming a stable conductive circuit under the action of a magnetic field, which greatly improves the contact reliability of the reed switch under various working conditions and reduces the risk of poor contact or open circuit.

[0012] 2. The beryllium copper straight spring and the contact spring are made of non-magnetic materials. When the magnetic field leaves, the two rely on their own elasticity to reliably disconnect the circuit, effectively avoiding the influence of residual magnetism, ensuring stable switching between on and off states, and extending the service life of the reed switch. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the planar structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the planar structure of the beryllium copper straight spring, silver contact point, and contact plate components of this utility model.

[0015] Figure 3 This is a planar structural diagram of the glass tube, moving plate fixing rod, and through hole components of this utility model. Reference numerals: 1_glass tube, 2_moving plate fixing rod, 3_beryllium copper straight spring piece, 4_silver contact point, 41_riveting bolt, 5_contact piece, 6_lower straight spring piece, 7_fixing piece, 8_through hole. Detailed Implementation

[0016] The present invention will now be described more fully below with reference to the accompanying drawings, in which presently preferred embodiments of the invention are shown. However, the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness and to fully convey the scope of the invention to those skilled in the art.

[0017] Example: A stable and reliable high-voltage, high-power, multi-point contact reed switch, such as... Figures 1-2As shown, the reed switch includes a glass tube 1, a moving plate fixing rod 2, a beryllium copper spring 3, a silver contact point 4, a riveting bolt 41, a contact piece 5, a lower contact spring 6, and a fixing piece 7. The glass tube 1, as the main body of the reed switch, has a tubular structure and is in a closed state, filled with inert gas to provide a sealing, anti-oxidation, and arc-extinguishing environment for the internal components. The glass tube 1 is made of high borosilicate glass, which has high strength, high temperature resistance, high pressure resistance, and good chemical stability. The wall thickness of the glass tube 1 is uniform to ensure the sealing effect of the internal inert gas and the safety of the reed switch. One end of the moving plate fixing rod 2 is fixed to the left side inside the glass tube 1, along the axial direction of the glass tube 1. The fixing piece 7 is fixedly installed on the right side inside the glass tube 1. The copper-plated spring 6 is installed on the right end of the moving plate fixing rod 2 by a riveting bolt 41, and the lower contact spring 6 is also installed on the left end of the fixing piece 7 by a riveting bolt 41. The copper-plated spring 6 and the lower contact spring 6 are arranged opposite each other inside the glass tube 1. Located above the lower contact spring 6, with a certain distance between them, the beryllium copper spring 3 has a silver contact point 4 on its right side, corresponding to the lower contact spring 6, ensuring accurate contact and forming the first contact point to conduct the circuit. After the magnetic field disappears, the lower contact spring 6 returns to its original position under its own elastic force, separating from the silver contact point 4 and disconnecting the circuit. The elastic modulus of the beryllium copper spring 3 and the lower contact spring 6 are within 180-220 GPa, and the fatigue strength is not less than 300 MPa, to ensure that the spring can maintain good elasticity and reliability under long-term repeated action. The contact piece 5 is located inside the glass tube 1 and is set at the bottom of the beryllium copper spring 3, opposite to the fixing piece 7. The two maintain a certain positional relationship in the axial direction of the glass tube 1 so that they can fit together when the circuit is conducting to form the second contact point. It works together with the silver contact point 4 and other components to form a stable multi-point contact system, further enhancing the conduction stability and reliability of the circuit.

[0018] like Figure 3 As shown, both the moving plate fixing rod 2 and the fixing plate 7 have through holes 8 at their outer ends for installing screws and connecting external power sources and loads, thus achieving a stable and reliable electrical connection.

[0019] The silver content of silver contact point 4 is not less than 92.5%, and the surface is gold-plated to improve the conductivity, oxidation resistance and wear resistance of the contact point, and reduce contact resistance and contact loss; the reed switch can work normally in a temperature range of -40℃ to 125℃.

[0020] When an external magnet approaches, the magnetic field acts on the internal structure of the reed switch, causing the silver contact point 4 to contact the lower contact spring 6. The contact piece 5 and the fixing piece 7 are fully bonded, thus forming a stable conductive circuit, ensuring the stability and good contact of the reed switch. When the magnetic field is removed, since both the beryllium copper spring 3 and the lower contact spring 6 are non-magnetic materials, no residual magnetism is generated. They use their own elasticity to disconnect the circuit, effectively ensuring the stable and reliable switching of the reed switch. This multi-point contact design greatly improves the reliability and stability of the reed switch under various operating conditions. Furthermore, the beryllium copper spring 3 and the lower contact spring 6 have no residual magnetism, which can effectively avoid malfunctions caused by adhesion, ensuring that the reed switch always maintains a stable and reliable working state during frequent switching operations.

[0021] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A stable and reliable high-voltage, high-power, multi-point contact reed switch, characterized in that: The reed switch includes a glass tube (1), a moving plate fixing rod (2), a beryllium copper spring (3), a silver contact point (4), a riveting bolt (41), a contact piece (5), a lower contact spring (6), and a fixing piece (7). The glass tube (1) serves as the main body of the reed switch and has a tubular structure. The glass tube (1) is in a closed state and filled with inert gas. One end of the moving plate fixing rod (2) is fixed to the left side inside the glass tube (1). The fixing piece (7) is fixedly installed on the right side inside the glass tube (1). The copper-plated spring is installed on the right end of the moving plate fixing rod (2) by a riveting bolt (41). The lower contact spring... The plate (6) is also installed on the left end of the fixing plate (7) by a rivet bolt (41). The copper-plated straight spring and the contact lower straight spring (6) are arranged opposite to each other inside the glass tube (1). The copper-plated straight spring is located above the contact lower straight spring (6) and the two maintain a certain distance. A silver contact point (4) is provided on the right side of the beryllium copper straight spring (3), corresponding to the contact lower straight spring (6). The contact point plate (5) is located inside the glass tube (1) and is set at the bottom end of the beryllium copper straight spring (3), opposite to the fixing plate (7). The two maintain a certain positional relationship in the axial direction of the glass tube (1).

2. A stable and reliable high-voltage, high-power, multi-point contact reed switch according to claim 1, characterized in that: Both the moving plate fixing rod (2) and the fixing plate (7) have through holes (8) at their outer ends for installing screws and connecting external power sources and loads.

3. A stable and reliable high-voltage, high-power, multi-point contact reed switch according to claim 2, characterized in that: The elastic modulus of the beryllium copper straight spring (3) and the contact straight spring (6) are in the range of 180-220 GPa, and the fatigue strength is not less than 300 MPa.

4. A stable and reliable high-voltage, high-power, multi-point contact reed switch according to claim 3, characterized in that: The glass tube (1) is made of high borosilicate glass.

5. A stable and reliable high-voltage, high-power, multi-point contact reed switch according to claim 4, characterized in that: Reed switches can operate normally in a temperature range of -40℃ to 125℃.

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