Verification device for threshold value function of temperature control switch

Abstract

The utility model relates to the technical field of temperature control switch detection, and provides a temperature control switch threshold value function verification device, which comprises a box body and a clamp, the top of the box body is provided with a working table top, the clamp is arranged on the working table top, the clamp comprises a main body, a pressure head and a test probe, the pressure head is arranged at the end part of the main body and is constructed to abut against a temperature control switch, and the test probe is arranged on the working table top. The test probes are arranged on two sides of the pressure head, are telescopic and can move between an extension position abutting against the temperature control switch and a retraction position separated from the temperature control switch, a power supply, a heating module and a refrigeration module are arranged in the box body, a first temperature controller and a second temperature controller are arranged on the side wall of the box body, the first temperature controller is connected with the heating module, and the second temperature controller is connected with the refrigeration module. The second temperature controller is connected with the refrigerating module, the top face of the heating module and the top face of the refrigerating module are both communicated with the working table top and provided with thermocouple temperature measuring lines, the thermocouple temperature measuring lines make contact with the temperature control switch, and the working table top is provided with a temperature control switch action indicator lamp.

Description

Technical Field

[0001] This utility model belongs to the field of temperature control switch detection technology, and in particular relates to a verification device for the threshold function of a temperature control switch. Background Technology

[0002] Currently, temperature control switches require threshold function testing during incoming material inspection or online product testing; otherwise, defective products may be released later. Existing methods use rapid cooling spray for testing, which is effective in specific environments but has several drawbacks. For example, it cannot accurately verify the action threshold range, and its application is limited, only validating temperature control switches within specific threshold ranges. Secondly, it requires a well-ventilated environment with no smoking or open flames. Furthermore, rapid cooling spray is flammable, explosive, and low in toxicity, posing risks of fire, frostbite, and poisoning. Operators must wear protective eyewear, anti-static clothing, and protective gloves, requiring higher skill levels and carrying inherent operational risks.

[0003] To solve the above-mentioned technical problems, this utility model designs a verification device for the threshold function of a temperature control switch. Utility Model Content

[0004] This invention provides a device for verifying the threshold function of a temperature control switch, which aims to complete the verification of the threshold function of the temperature control switch conveniently, quickly and safely.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a verification device for the threshold function of a temperature control switch, comprising a housing and a fixture. The housing has a worktable on its top, and the fixture is located on the worktable. The fixture includes a main body, a pressure head, and a test probe. The pressure head is located at the end of the main body and is configured to press against the temperature control switch. The test probe is located on both sides of the pressure head and is retractable, capable of moving between an extended position that contacts the temperature control switch and a retracted position that separates from the temperature control switch. The housing contains a power supply, a heating module, and a cooling module. The side wall of the housing has a first temperature controller and a second temperature controller. The first temperature controller is connected to the heating module, and the second temperature controller is connected to the cooling module. The top surfaces of both the heating and cooling modules are connected to the worktable and each has a thermocouple measuring wire. The thermocouple measuring wire is in contact with the temperature control switch. The worktable has a temperature control switch operation indicator light.

[0006] Based on the above technical solution, the workbench is provided with a support base, the support base is provided with a fixing plate, and the clamp is fixed on the fixing plate.

[0007] Based on the above technical solution, the main body of the clamp includes a handle, a linkage, a push rod, and a fixing component. One side of the fixing component is fixedly connected to a fixing plate, the upper end of the other side is rotatably connected to the handle, and the lower end of the other side is slidably connected to the push rod. One end of the linkage is rotatably connected to the handle, and the other end is rotatably connected to the push rod. The push rod extends in the vertical direction, and the pressure head is located at the lower end of the push rod.

[0008] Based on the above technical solution, the handle includes a first segment and a second segment. The first segment extends in the vertical direction, with its upper end rotatably connected to the fixing member and its lower end connected to the second segment, forming a bend at the connection point. The bend is rotatably connected to the linkage member, and the second segment extends horizontally in the direction away from the fixing plate.

[0009] Based on the above technical solution, the linkage includes a first linkage and a second linkage. The first linkage and the second linkage are respectively disposed on both sides of the handle and the push rod. One end is rotatably connected to the handle through a rotating shaft, and the other end is rotatably connected to the push rod through a rotating shaft.

[0010] Based on the above technical solution, both the heating module and the cooling module are equipped with fans, and the side wall of the housing is equipped with an air inlet screen and an air outlet screen, which are arranged opposite to each other.

[0011] Based on the above technical solution, the operating temperature of the temperature control switch is Tc, the set temperature of the first temperature controller is T1=Tc+5℃, and the set temperature of the second temperature controller is T2=Tc-5℃.

[0012] Based on the above technical solution, the box is also equipped with a DC contactor, and the side wall of the box is equipped with a temperature controller output action indicator light. The first temperature controller and the second temperature controller are equipped with a relay and a temperature control coil.

[0013] Based on the above technical solution, the heating module includes a PTC heater.

[0014] Based on the above technical solution, the cooling module includes a semiconductor cooling chip.

[0015] Compared with related technologies, the beneficial effects of this utility model are as follows:

[0016] This invention enables the rapid fixing of the temperature control switch using a clamp set on the workbench. The heating and cooling modules are controlled by the first and second temperature controllers to maintain low and high temperature environments. In both low and high temperature environments, the test circuit is connected by the test probe extending out and contacting the temperature control switch, and by the bottom of the temperature control switch contacting the thermocouple measuring wire. The working status of the temperature control switch can be determined by observing the status of the temperature control switch's indicator light. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be derived from the provided drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a verification device for the threshold function of a temperature control switch provided by this utility model;

[0019] Figure 2 This is an exploded structural diagram of a temperature control switch threshold function verification device provided by this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of another verification device for the threshold function of a temperature control switch provided by this utility model;

[0021] Figure 4 This is an enlarged structural schematic diagram of a verification device for the threshold function of a temperature control switch provided by this utility model;

[0022] Figure 5 This is a circuit diagram of the first and second temperature controllers provided by this utility model.

[0023] In the diagram: 1. Housing; 11. Workbench; 111. Thermocouple measuring wire; 112. Temperature control switch indicator light; 113. Support base; 114. Fixing plate; 12. Power supply; 13. Heating module; 14. Cooling module; 141. Fan; 15. First temperature controller; 16. Second temperature controller; 161. Temperature controller output indicator light; 162. Relay; 163. Temperature control coil; 164. Cooling fan; 165. PTC heater; 17. Air inlet grille; 18. Air outlet grille; 19. DC contactor; 2. Fixture; 21. Main body; 211. Handle; 2111. First section; 2112. Second section; 212. Linkage component; 2121. First linkage component; 2122. Second linkage component; 213. Push rod; 214. Fixing component; 22. Pressure head; 23. Test probe; 3. Temperature control switch. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and examples:

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Combination Figure 1-5 As shown in the figure, this disclosure provides a verification device for the threshold function of a temperature control switch, including a housing 1 and a fixture 2. The housing 1 has a worktable 11 on its top, and the fixture 2 is disposed on the worktable 11. The fixture 2 includes a main body 21, a pressure head 22, and a test probe 23. The pressure head 22 is disposed at the end of the main body 21 and is configured to press against the temperature control switch 3. The test probe 23 is disposed on both sides of the pressure head 22 and is retractable, capable of moving between an extended position that abuts against the temperature control switch 3 and a retracted position that is separated from the temperature control switch 3. The housing 1 contains a power supply 12, a heating module 13, and a cooling module 14. The side wall of the housing 1 is provided with a first temperature controller 15 and a second temperature controller 16. The first temperature controller 15 is connected to the heating module 13, and the second temperature controller 16 is connected to the cooling module 14. The top surfaces of the heating module 13 and the cooling module 14 are connected to the workbench surface 11 and are each provided with a thermocouple measuring wire 111. The thermocouple measuring wire 111 is in contact with the temperature control switch 3. The workbench surface 11 is provided with a temperature control switch operation indicator light 112.

[0029] The temperature control switch threshold function verification device provided in this embodiment can quickly fix the temperature control switch 3 by means of the clamp 2 set on the workbench 11. The heating module and the cooling module are controlled by the first temperature controller 15 and the second temperature controller 16 to achieve the function of maintaining low temperature environment and high temperature environment. In the low temperature environment and high temperature environment, the test probe 23 extends and abuts against the temperature control switch 3 and the bottom of the temperature control switch 3 abuts against the thermocouple measuring wire 111 to realize the connection of the test circuit. At this time, the working state of the temperature control switch 3 can be determined by observing the status of the temperature control switch action indicator light 112.

[0030] Based on the above technical solutions, such as Figure 2 and Figure 3 As shown, the workbench 11 is provided with a support base 113, the support base 113 is provided with a fixing plate 114, and the clamp 2 is fixed on the fixing plate 114.

[0031] Specifically, there are multiple support seats 113, which are evenly distributed on the workbench 11. The fixing plate 114 is fixedly connected to multiple support seats 113 at the same time, which can improve the stability of the fixing plate 114, thereby improving the stability of the fixture 2.

[0032] Based on the above technical solutions, such as Figure 4 As shown, the main body 21 of the clamp 2 includes a handle 211, a linkage 212, a push rod 213, and a fixing member 214. One side of the fixing member 214 is fixedly connected to the fixing plate 114, the upper end of the other side is rotatably connected to the handle 211, and the lower end of the other side is slidably connected to the push rod 213. One end of the linkage 212 is rotatably connected to the handle 211, and the other end is rotatably connected to the push rod 213. The push rod 213 extends in the vertical direction, and the pressure head 22 is located at the lower end of the push rod 213.

[0033] Specifically, a limiting ring structure is provided on the other side of the fixing member 214, and the push rod 213 passes through the limiting ring structure and can slide up and down relative to the limiting ring structure. When the handle 211 is turned clockwise, the handle 211 drives the linkage member 212 to move. The linkage member 212 rotates simultaneously with the handle 211 and the push rod 213. During the rotation, the push rod 213 is always in the vertical extension direction and moves away from the temperature control switch 3. When the handle 211 is turned counterclockwise, the handle 211 drives the linkage member 212 to drive the push rod 213 to move. The push rod 213 moves towards the temperature control switch 3 until the pressure head 22 abuts against the temperature control switch 3.

[0034] Based on the above technical solutions, such as Figure 4As shown, the handle 211 includes a first segment 2111 and a second segment 2112. The first segment 2111 extends in the vertical direction, with its upper end rotatably connected to the fixing member 214 and its lower end connected to the second segment 2112, with the connection forming a bend. The bend is rotatably connected to the linkage member 212. The second segment 2112 extends horizontally in the direction away from the fixing plate 114.

[0035] Based on the above technical solutions, such as Figure 4 As shown, the linkage 212 includes a first linkage 2121 and a second linkage 2122. The first linkage 2121 and the second linkage 2122 are respectively disposed on both sides of the handle 211 and the push rod 213. One end is rotatably connected to the handle 211 through a rotating shaft, and the other end is rotatably connected to the push rod 213 through a rotating shaft.

[0036] The arrangement of the first linkage 2121 and the second linkage 2122 makes the movement of the linkage 212 relative to the handle 211 and the push rod 213 more stable and smooth, thereby making the movement of the push rod 213 more stable and smooth.

[0037] Based on the above technical solutions, such as Figure 2 and Figure 3 As shown, both the heating module and the cooling module are equipped with a fan 141. The side wall of the housing 1 is provided with an air inlet screen 17 and an air outlet screen 18, which are arranged opposite to each other. The air inlet screen 17 and the air outlet screen 18 can accelerate the air exchange and circulation inside the housing 1, and work with the fan 141 to enable the heating module and the cooling module to adjust the temperature more quickly.

[0038] Based on the above technical solution, the operating temperature of the temperature control switch 3 is Tc, the set temperature of the first temperature controller 15 is T1=Tc+5℃, and the set temperature of the second temperature controller 16 is T2=Tc-5℃.

[0039] The heating module and the cooling module are controlled by the first thermostat 15 and the second thermostat 16 respectively to form a hot zone and a cold zone. The operation status of the thermostat switch 3 is checked in the hot and cold zones to determine whether the operation threshold of the thermostat switch 3 is accurately judged. If the thermostat switch 3 is open when T1=Tc+5℃ and closed when the temperature is T2=Tc-5℃, it indicates that the operation threshold of the thermostat switch 3 is judged correctly. Otherwise, it indicates that the operation threshold of the thermostat switch 3 is problematic.

[0040] Based on the above technical solutions, such as Figure 5 As shown, the housing 1 is also equipped with a DC contactor 19, and the side wall of the housing 1 is equipped with a temperature controller output action indicator light 161. The first temperature controller 15 and the second temperature controller 16 are equipped with a relay 162 and a temperature control coil 163.

[0041] Specifically, relay 162 is connected in series with temperature control coil 163 to control the working state of temperature control coil 163. Temperature controller output action indicator light 161 is connected in parallel with the circuit of relay 162 and temperature control coil 163 to indicate the working state of temperature controller. DC contactor 19 is connected in series with the circuit of relay 162 and temperature control coil 163 to control the working state of temperature controller. The first temperature controller 15 and the second temperature controller 16 are also equipped with cooling fan 164.

[0042] Based on the above technical solution, the heating module 13 includes a PTC heater 165.

[0043] Based on the above technical solution, the cooling module 14 includes a semiconductor cooling chip.

[0044] The present invention has been described above by way of example, but the present invention is not limited to the specific embodiments described above. Any modifications or variations made based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A verification device for the threshold function of a temperature control switch, characterized in that, The device includes a housing and a fixture. The housing has a worktable on top, and the fixture is located on the worktable. The fixture includes a main body, a pressure head, and a test probe. The pressure head is located at the end of the main body and is configured to press against a temperature control switch. The test probe is located on both sides of the pressure head and is retractable, moving between an extended position that contacts the temperature control switch and a retracted position that separates from the temperature control switch. The housing contains a power supply, a heating module, and a cooling module. The side wall of the housing has a first temperature controller and a second temperature controller. The first temperature controller is connected to the heating module, and the second temperature controller is connected to the cooling module. The top surfaces of both the heating and cooling modules are connected to the worktable and each has a thermocouple measuring wire that contacts the temperature control switch. The worktable has a temperature control switch operation indicator light.

2. The verification device for the threshold function of the temperature control switch according to claim 1, characterized in that, The workbench is provided with a support base, the support base is provided with a fixing plate, and the clamp is fixed to the fixing plate.

3. The verification device for the threshold function of the temperature control switch according to claim 2, characterized in that, The main body of the clamp includes a handle, a linkage, a push rod, and a fixing component. One side of the fixing component is fixedly connected to a fixing plate, the upper end of the other side is rotatably connected to the handle, and the lower end of the other side is slidably connected to the push rod. One end of the linkage is rotatably connected to the handle, and the other end is rotatably connected to the push rod. The push rod extends in the vertical direction, and the pressure head is located at the lower end of the push rod.

4. The verification device for the threshold function of the temperature control switch according to claim 3, characterized in that, The handle includes a first section and a second section. The first section extends in the vertical direction, with its upper end rotatably connected to a fixing member and its lower end connected to the second section, forming a bend at the connection point. The bend is rotatably connected to a linkage member. The second section extends horizontally in a direction away from the fixing plate.

5. The verification device for the threshold function of the temperature control switch according to claim 3, characterized in that, The linkage includes a first linkage and a second linkage. The first linkage and the second linkage are respectively located on both sides of the handle and the push rod. One end of the first linkage is rotatably connected to the handle via a rotating shaft, and the other end is rotatably connected to the push rod via a rotating shaft.

6. The verification device for the threshold function of the temperature control switch according to any one of claims 1 to 5, characterized in that, Both the heating module and the cooling module are equipped with fans, and the side wall of the housing is equipped with an air inlet screen and an air outlet screen, which are arranged opposite to each other.

7. The verification device for the threshold function of the temperature control switch according to any one of claims 1 to 5, characterized in that, The operating temperature of the temperature control switch is Tc, the set temperature of the first temperature controller is T1=Tc+5℃, and the set temperature of the second temperature controller is T2=Tc-5℃.

8. The verification device for the threshold function of the temperature control switch according to any one of claims 1 to 5, characterized in that, The enclosure is also equipped with a DC contactor, and the side wall of the enclosure is equipped with a temperature controller output indicator light. The first temperature controller and the second temperature controller are equipped with relays and temperature control coils.

9. The verification device for the threshold function of the temperature control switch according to any one of claims 1 to 5, characterized in that, The heating module includes a PTC heater.

10. The verification device for the threshold function of the temperature control switch according to any one of claims 1 to 5, characterized in that, The cooling module includes a semiconductor cooling chip.

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