Mechanical adjustable temperature switch

Abstract

The utility model provides a mechanical adjustable temperature switch, and the switch comprises a contact which is installed on an installation sheet in a riveting manner; the wire is fixedly connected to the mounting sheet through tin soldering; the mounting pieces are respectively fixed on the thermal bimetallic strip and the static reed by bending a metal plate, and insulating gaskets are arranged between the mounting pieces and the thermal bimetallic strip and between the mounting pieces and the static reed; the static reed is fixedly connected to one side of the mounting seat; the thermal bimetallic strip is fixedly connected to the other side of the mounting seat and is parallel to the static reed; the shell is mounted in an inner hole of the filler neck; the mounting seat is fixedly connected to the internal thread of the filler neck; according to the adjustable switch point, the initial gap between the two contacts in the temperature switch is changed by changing the pressure of the stud on the thermal bimetallic strip, and the purpose of adjusting the temperature of the switch point is achieved.

Description

Technical Field

[0001] This application belongs to the field of temperature detection instrument technology, specifically relating to a mechanically adjustable temperature switch. Background Technology

[0002] A mechanical temperature switch is an electromechanical switch product that uses a bimetallic strip as a temperature-sensitive element and converts the displacement signal of the bimetallic strip's deformation after sensing temperature into an electrical signal. Temperature switches are widely used in household and engineering electrical appliances, such as air conditioner motors, transformers, and electric heating appliances. In addition, temperature switches are also used in aircraft environmental control systems to detect temperature alarms in the tested system. When the temperature rises to or falls to the switching point temperature, the bimetallic strip bends or recovers its original shape, opening / closing the contacts and cutting off / connecting the circuit, thereby outputting a circuit conversion signal.

[0003] Existing temperature switches present significant challenges in achieving the correct switching point temperature during assembly and debugging. Furthermore, re-tuning after product packaging requires disassembling the temperature switch casing. Since temperature switches sense system temperature, their switching point temperatures typically differ before and after packaging, and adjusting the switching point of the same temperature switch using simple adjustments is difficult. Utility Model Content

[0004] The purpose of this application is to provide a mechanically adjustable temperature switch that addresses the shortcomings of existing technologies, allowing the switching point to be adjusted within a certain temperature range, and reducing the operational difficulty during assembly and debugging.

[0005] This application provides a mechanically adjustable temperature switch, the switch comprising:

[0006] The contacts are riveted and mounted on the mounting plate.

[0007] The wires are fixedly connected to the mounting plate by soldering.

[0008] The mounting plate is fixed to the hot bimetallic strip and the stationary spring plate respectively by bending the sheet metal. Insulating gaskets are provided between the mounting plate and the hot bimetallic strip and between the mounting plate and the stationary spring plate.

[0009] A stationary spring is fixedly connected to one side of the mounting base;

[0010] A thermoplastic bimetallic strip is fixedly connected to the other side of the mounting base and is parallel to the stationary spring.

[0011] The housing is installed inside the nozzle;

[0012] The mounting base is fixedly connected to the internal thread of the connector nozzle.

[0013] The adjustable switching point is achieved by changing the pressure of the stud on the hot bimetallic strip, thereby changing the initial gap between the two contacts inside the temperature switch and thus adjusting the switching point temperature.

[0014] Preferably, the connection between the bimetallic strip and the mounting base is a screw connection.

[0015] Preferably, the stationary spring is fixed to the mounting base by laser welding.

[0016] Preferably, a threaded hole is provided on the housing, a stud is installed in the threaded hole, and the end of the stud is in direct contact with the hot bimetallic strip.

[0017] Preferably, the switching point is adjustable by changing the shape of the hot bimetallic strip by changing the force between the stud and the hot bimetallic strip.

[0018] Preferably, the temperature switch has an adjustment range of 80℃ to 150℃.

[0019] This application has the following technical effects:

[0020] This invention features a temperature adjustment screw, which allows for the setting of any temperature switch point within the range of 80℃ to 150℃ by changing the gap between the hot bimetallic strip and the stationary spring. Attached Figure Description

[0021] Figure 1 This is a schematic diagram showing the external shape of the mechanically adjustable temperature switch of this utility model.

[0022] Figure 2 This is a half-sectional view showing the mechanically adjustable temperature switch of this utility model in its initial state.

[0023] Figure 3 This is a diagram showing the shell structure of this utility model. Detailed Implementation

[0024] Please see Figures 1-3 This utility model provides a mechanically adjustable temperature switch, which includes a static spring assembly, a thermal bimetallic strip assembly, a mounting base, an adjusting screw, a connector, a housing, and a socket.

[0025] The stationary spring assembly includes a stationary spring, a contact, a mounting plate, an insulating gasket, and a wire. The stationary spring is fixed to the mounting base by laser welding, the contact is fixed to the mounting plate by riveting, the wiring plate is fixed to the end of the stationary spring by sheet metal bending, and the wire is fixed to the mounting plate by soldering.

[0026] The bimetallic strip assembly includes a bimetallic strip, contacts, mounting plates, insulating gaskets, and wires. The bimetallic strip is fixed to the mounting base by screws, the contacts are fixed to the mounting plates by riveting, the mounting plates are fixed to the end of the bimetallic strip by sheet metal bending, and the wires are fixed to the mounting plates by soldering.

[0027] The housing and the connector nozzle are first fixed by laser welding. After the static spring plate assembly and the hot bimetallic strip assembly are assembled on the mounting block, they are installed on the internal thread of the connector nozzle. The stud is installed in the threaded hole on the side of the housing. The temperature switch point can be adjusted by changing the position of the stud in the threaded hole. After the wire is passed out from the mounting hole, the mounting seat is tightened. The wire is then soldered to the two pins of the socket. Finally, the socket is connected to the housing.

[0028] This utility model provides a mechanically adjustable temperature switch, which includes a static spring assembly, a thermal bimetallic strip assembly, a mounting base, an adjusting screw, a connector, a socket, etc.

[0029] The stationary spring assembly includes a stationary spring 1, a contact 2, a mounting plate 3, an insulating gasket 4, and a wire 5. The stationary spring 1 is fixed to the mounting base 6 by laser welding, the contact 2 is fixed to the mounting plate 3 by riveting, the mounting plate 3 is fixed to the end of the stationary spring 1 by sheet metal, and the wire 5 is fixed to the mounting plate 3 by soldering.

[0030] The bimetallic strip assembly includes a bimetallic strip 7, a contact 8, a mounting plate 9, an insulating gasket 10, and a wire 11. The bimetallic strip 7 is fixed to the mounting base 6 by screws, the contact 8 is fixed to the mounting plate 9 by riveting, the mounting plate 9 is fixed to the end of the bimetallic strip 7 by sheet metal, and the wire 11 is fixed to the mounting plate 9 by soldering.

[0031] The housing 13 and the connector 12 are first fixed by laser welding. After the static spring assembly and the hot bimetallic strip assembly are assembled on the mounting base 6, they are installed on the connector 12. The stud 14 is installed in the threaded hole 1301 on the side of the housing 13. After the wires 5 and 11 are passed out from the mounting base 6, the mounting base 6 is tightened. The wires 5 and 11 are then soldered to the two pins of the socket. Finally, the socket 15 is connected to the housing 13.

[0032] During debugging, place the temperature switch in the environment where the desired temperature switch point is located (95℃). After stabilizing for 5 minutes, adjust the position of the stud in the threaded hole of the housing. When the two pins of the socket are connected, it is ready.

[0033] This utility model belongs to the field of temperature detection instrument technology, and relates to a mechanically adjustable temperature switch structure design. The mechanically adjustable temperature switch comprises a temperature-sensitive component, a stationary spring component, an output component, and an adjusting screw. The temperature-sensitive component includes a mounting plate, a contact, a bimetallic strip, and an insulating gasket; the stationary spring component includes a stationary spring, a contact, a mounting plate, and an insulating gasket; the output component includes a wire and a socket.

[0034] The main working principle of this invention is based on the bending deformation caused by the temperature change of the bimetallic strip sensing system, which alters the gap between the contacts on the bimetallic strip and the contacts on the stationary spring. The mounting base is used to fix the bimetallic strip and the stationary spring. The free end of the bimetallic strip sensing system bends due to ambient temperature, causing its contacts to connect with the contacts on the stationary spring. The resulting closed signal is output through the output component.

[0035] This invention features a temperature adjustment screw, which allows for the setting of any temperature switch point within the range of 80℃ to 150℃ by changing the gap between the hot bimetallic strip and the stationary spring.

Claims

1. A mechanically adjustable temperature switch, characterized in that, The switch includes: The contacts are riveted and mounted on the mounting plate. The wires are fixedly connected to the mounting plate by soldering. The mounting plate is fixed to the hot bimetallic strip and the stationary spring plate respectively by bending the sheet metal. Insulating gaskets are provided between the mounting plate and the hot bimetallic strip and between the mounting plate and the stationary spring plate. A stationary spring is fixedly connected to one side of the mounting base; A thermoplastic bimetallic strip is fixedly connected to the other side of the mounting base, and it is parallel to the stationary spring. The housing is installed inside the nozzle; Mounting base, fixedly connected to the internal thread of the connector nozzle; The adjustable switching point is achieved by changing the pressure of the stud on the hot bimetallic strip, thereby changing the initial gap between the two contacts inside the temperature switch and thus adjusting the switching point temperature.

2. The mechanically adjustable temperature switch according to claim 1, characterized in that, The connection between the bimetallic strip and the mounting base is a screw connection.

3. The mechanically adjustable temperature switch according to claim 2, characterized in that, The stationary spring is fixed to the mounting base by laser welding.

4. The mechanically adjustable temperature switch according to claim 3, characterized in that, A threaded hole is provided on the housing, and a stud is installed on the threaded hole, with the end of the stud directly contacting the hot bimetallic strip.

5. The mechanically adjustable temperature switch according to claim 4, characterized in that, The switching point can be adjusted by changing the shape of the bimetallic strip by altering the force between the stud and the bimetallic strip.

6. The mechanically adjustable temperature switch according to claim 5, characterized in that, The temperature switch has an adjustment range of 80℃ to 150℃.

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