A thermally responsive switch and control circuit

Abstract

The application provides a thermal response switch and a control circuit, and relates to the technical field of low-voltage electrical appliances. The thermal response switch comprises a base, a first electrode, a second electrode, a moving assembly and a thermal sensitive assembly arranged on the base. The second electrode is electrically connected with the moving assembly. The thermal sensitive assembly is clamped with the moving assembly. The thermal sensitive assembly is used for receiving heat of a device to be protected to release the clamping with the moving assembly through deformation, so that the moving assembly can move relative to the base and be in contact with the first electrode to be conducted. The clamping cooperation of the thermal sensitive assembly and the moving assembly realizes thermal response protection in a pure mechanical mode. The transmission of an electric signal is not needed, that is, the thermal response switch is not limited by an external power supply. The thermal response switch can meet various application scenarios, thereby effectively improving the reliability and stability of the thermal response switch.

Description

Technical Field

[0001] This application relates to the field of low-voltage electrical technology, and more specifically, to a thermal response switch and control circuit. Background Technology

[0002] With rapid economic development and the rapid improvement of people's living standards, electronic circuits have been gradually applied to various industries. As electronic circuit technology has matured, control circuits have enabled a high degree of automation in production operations, thereby improving production efficiency. However, this has also led to higher demands for the safety of control circuits. When a fault occurs in a control circuit, the temperature of certain electronic components will rise rapidly. If no protective measures are taken, significant losses will occur. Therefore, improving the overheat protection capability of control circuits is a current focus of attention.

[0003] Existing control circuits typically incorporate thermal response switches to provide protection. These switches mainly employ a combination of a control unit and a control switch. The control unit requires an external power supply, so it will not function when there is no power supply during operation, thus posing a certain safety hazard. Summary of the Invention

[0004] The purpose of this application is to address the shortcomings of the prior art by providing a thermal response switch and control circuit, thereby solving the problems of limited application scenarios and insufficient reliability caused by the requirement of an external power supply for existing thermal response switches.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows:

[0006] In one aspect of this application, a thermal response switch is provided, including a base and a first electrode, a second electrode, an actuating component, and a thermistor component disposed on the base. The second electrode is electrically connected to the actuating component, and the thermistor component is snapped into the actuating component. The thermistor component is used to receive heat from the device to be protected so as to release the snap-in from the actuating component through deformation, so that the actuating component can move relative to the base and contact the first electrode to conduct electricity.

[0007] Optionally, the thermal component and the actuation component are engaged to limit the actuation component to remain in an energy-storing state, and the thermal component and the actuation component are disengaged to allow the actuation component to release energy and move relative to the base.

[0008] Optionally, the actuation assembly includes an actuating element and an elastic element that are connected to each other. The actuating element is electrically connected to the second electrode and snaps into the thermal component. The elastic element is used to provide a force to the actuating element so that the actuating element tends to move toward the first electrode.

[0009] Optionally, the thermal response switch includes multiple thermal components, and a balancing element is movably disposed on the actuating component. The multiple thermal components are respectively engaged with the actuating component through the balancing element to limit the balancing element to maintain a balanced state. When at least one thermal component deforms to release itself from the balancing element, the balancing element is released from the balanced state and moves relative to the actuating component so that the actuating component is released from the engagement with all the multiple thermal components.

[0010] Optionally, the thermal response switch may also include a pluggable limiting element disposed on the base, the limiting element being used to limit the action assembly and / or the balancing element.

[0011] Optionally, the thermal assembly includes a thermal element, one end of which is fixedly mounted on the base, and the other end of which is used to engage with the actuation assembly.

[0012] Optionally, the thermal element includes a body fixed at one end to the base and a snap-fit ​​part disposed at the other end of the body. The snap-fit ​​part is disposed at an angle to the body and is used to snap-fit ​​with the actuating component.

[0013] Optionally, the thermal component may also include a temperature-sensing element in contact with the thermal element, the temperature-sensing element being positioned to receive heat from the device to be protected.

[0014] Optionally, the thermal response switch also includes a reset element movably disposed on the base. The drive end of the reset element is driven to cooperate with the actuation component. The reset element is used to drive the actuation component to disconnect from the first electrode and reset under force.

[0015] Optionally, the reset member is slidably disposed on the base, and the driving end of the reset member passes through the first electrode and engages with the actuation component.

[0016] Optionally, the motion component is also provided with a positioning groove for accommodating the drive end, the shape of which matches the shape of the drive end.

[0017] Optionally, the thermal response switch also includes a flexible connection, through which the second electrode is connected to the actuating component.

[0018] Optionally, a slide rail is also provided on the base, and the motion component is slidably mounted on the slide rail.

[0019] In another aspect of the embodiments of this application, a control circuit is provided, including any of the above-described thermal response switches.

[0020] The beneficial effects of this application include:

[0021] This application provides a thermal response switch and control circuit. The thermal response switch includes a base and a first electrode, a second electrode, an actuating component, and a thermistor component disposed on the base. The second electrode is electrically connected to the actuating component, and the thermistor component is snapped into the actuating component. The thermistor component receives heat from the device to be protected and releases itself from the actuating component through deformation, allowing the actuating component to move relative to the base and make contact with the first electrode to conduct electricity. Through the snap-fit ​​interaction of the thermistor component and the actuating component, thermal response protection is achieved in a purely mechanical manner, without the need for electrical signal transmission, i.e., without being limited by an external power supply. This can meet various application scenarios, thereby effectively improving the reliability and stability of the thermal response switch. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 An exploded view of a thermal response switch provided in one embodiment of this application;

[0024] Figure 2 This is one of the state diagrams of a thermal response switch provided in an embodiment of this application;

[0025] Figure 3 This is a second schematic diagram of the state of a thermal response switch provided in an embodiment of this application;

[0026] Figure 4 This is the third schematic diagram of the state of a thermal response switch provided in an embodiment of this application;

[0027] Figure 5 An exploded view of a thermal response switch provided in another embodiment of this application;

[0028] Figure 6 This is one of the structural schematic diagrams of a thermal response switch provided in another embodiment of this application;

[0029] Figure 7 This is a second schematic diagram of a thermal response switch provided in another embodiment of this application;

[0030] Figure 8 for Figure 7 A magnified view of a portion of region A in the middle;

[0031] Figure 9 One of the state diagrams of a thermal response switch provided in another embodiment of this application;

[0032] Figure 10 This is a second schematic diagram of the state of a thermal response switch provided in another embodiment of this application;

[0033] Figure 11 A third schematic diagram of the state of a thermal response switch provided in another embodiment of this application;

[0034] Figure 12 Fourth schematic diagram of the state of a thermal response switch provided in another embodiment of this application;

[0035] Figure 13 A schematic diagram of the structure of a thermal response switch is provided in another embodiment of this application;

[0036] Figure 14 This is a schematic diagram of a thermal response switch provided in another embodiment of this application.

[0037] Icons: 100-Base; 101-Fixed end; 110-Slide rail; 210-First electrode; 220-Second electrode; 230-Flexible connection; 300-Actuating component; 310-Actuating element; 311-Through groove; 312-Positioning groove; 313-Leg; 320-Elastic element; 330-Balancing element; 400-Thermosensitive component; 410-Thermosensitive element; 411-Snap-fit ​​part; 420-Temperature sensing element; 510-Reset element; 520-Limiting element. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. It should be noted that, in the absence of conflict, the various features in the embodiments of this application can be combined with each other, and the combined embodiments are still within the protection scope of this application.

[0039] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and therefore should not be construed as limiting this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] This application provides a control circuit and a thermal response switch used in the control circuit. The thermal response switch can sense the temperature or heat of a device to be protected in the control circuit, and thus protect the device from excessive temperature or heat based on a threshold, preventing significant safety hazards. Embodiments of this application will be described below with reference to the accompanying drawings.

[0042] Please see Figure 1 An exploded view of a thermally responsive switch is shown. The thermally responsive switch includes a base 100, a first electrode 210, a second electrode 220, an actuation component 300, and a thermal component 400. The base 100 can be a platform, a housing, etc., and this application does not impose specific limitations on it. It should be understood that when the base 100 is a housing (…), Figure 1 As shown, it can provide good protection for the other components of the thermal response switch, thereby improving the reliability and stability of the thermal response switch.

[0043] The first electrode 210, the second electrode 220, the actuation component 300, and the thermal component 400 are all disposed on the base 100. (See also...) Figure 2 When the base 100 is a housing with an inner cavity: in one embodiment, the first electrode 210 may be entirely located within the inner cavity, and then led out to the outside of the housing and connected to the control circuit via a conductive element; in another embodiment, the first electrode 210 may also have a portion located within the inner cavity, and the other portion extending from the inner cavity to the outside of the housing and connected to the control circuit. The second electrode 220 is similar, and will not be described in detail here.

[0044] A thermal component 400 is disposed on the base 100 and can correspond to the position of the device to be protected, thereby sensing or receiving the temperature or heat (hereinafter referred to as heat) of the device to be protected. The second electrode 220 is electrically connected to the actuating component 300, which is movably disposed on the base 100 and has a tendency to move relative to the base 100. By engaging or disengaging the actuating component 300 with the thermal component 400, the actuating component 300 is separated from or contacts the first electrode 210, thereby disconnecting or connecting the protection circuit composed of the second electrode 220 and the first electrode 210, thus realizing the thermal response protection function. Further details will be provided below with reference to the accompanying drawings.

[0045] Please see Figure 2 The first electrode 210 and the second electrode 220 of the thermal response switch are respectively connected to the control circuit. The thermal component 400 continuously receives the heat from the device under protection in real time. When the device under protection is working normally, the heat it generates is within the normal range, and the thermal response switch is in a state of normal operation. Figure 2 The non-operational state shown: At this time, the thermal component 400 will engage with the actuation component 300, thereby restricting the movement of the actuation component 300 relative to the base 100, so that the actuation component 300 cannot contact the first electrode 210 and there is a certain safe distance between the actuation component 300 and the first electrode 210, and the second electrode 220 and the first electrode 210 (protection circuit) are in the disconnected state.

[0046] Please see Figure 3 When the device to be protected malfunctions and generates a large amount of heat, the thermal response switch starts to operate: the heat is conducted to the thermal component 400, causing the temperature of the thermal component 400 to rise and exceed the threshold. The thermal component 400 then deforms, and this deformation causes the thermal component 400 to detach from the actuation component 300, thereby releasing the engagement between the thermal component 400 and the actuation component 300.

[0047] Please see Figure 4 Since the actuating component 300 has a tendency to move relative to the base 100, the actuating component 300 will move relative to the base 100 after the restriction is lifted until it contacts the first electrode 210 on the movement path of the actuating component 300. At this time, the second electrode 220 can be connected to the first electrode 210 through the actuating component 300, that is, the protection circuit is connected, thereby protecting the device to be protected.

[0048] In summary, the thermal response switch of this application achieves thermal response protection in a purely mechanical manner through the snap-fit ​​cooperation of the thermal component 400 and the actuation component 300. It does not require the transmission of electrical signals, and is therefore not limited by an external power supply. This allows it to meet various application scenarios, thereby effectively improving the reliability and stability of the thermal response switch.

[0049] It should be understood that the way the thermal component 400 receives heat from the device under protection by corresponding to the device under protection's position can be either by having the thermal component 400 directly contact the device under protection to receive heat, or by having the thermal component 400 disposed around the device under protection, with the thermal component 400 receiving heat through the air or intermediate component between the two. This application does not limit the method of receiving heat.

[0050] Of course, in actual use, the thermal response switch provided in this application can be connected in parallel with the device to be protected, or it can be used as a signal triggering device. This application does not impose any restrictions on it.

[0051] When the thermal component 400 has conductivity, the second electrode 220 can also be electrically connected to the actuation component 300 through the thermal component 400.

[0052] In order to make the actuating component 300 tend to move relative to the base 100, the actuating component 300 can be made to use an energy storage and release method. In other words, when the thermal component 400 is engaged with the actuating component 300, the actuating component 300 cannot release energy and thus maintains an energy storage state. When the thermal component 400 receives a large amount of heat and deforms to detach from the actuating component 300, thereby releasing the restriction on the actuating component 300, the actuating component 300 begins to release energy, thereby realizing the movement of the actuating component 300 relative to the base 100, and finally coming into contact with the first electrode 210 located on the movement path of the actuating component 300 and stopping.

[0053] When the actuating component 300 contacts and stops, it should not completely release energy, so that the actuating component 300 can still abut against the first electrode 210 to ensure the continuous conduction of the protection circuit, thereby improving the stability and reliability of the thermal response switch in terms of protection function.

[0054] Please see Figures 1 to 4 The actuation component 300 includes an actuating element 310 and an elastic element 320. The actuating element 310 is connected to the second electrode 220, and the elastic element 320 is connected to the actuating element 310. The elastic element 320 provides a force to the actuating element 310, causing the actuating element 310 to tend to move relative to the base 100. Figure 2 As shown, when the actuating element 310 is engaged with the thermal component 400, the elastic element 320 is in an energy-storing state; as Figure 3 and Figure 4 As shown, when the thermal component 400 deforms due to heat and disengages from the actuator 310, the elastic element 320 releases energy, thereby driving the actuator 310 to move relative to the base 100 and toward the first electrode 210 until the actuator 310 contacts the first electrode 210. When the actuator 310 contacts the first electrode 210, the elastic element 320 should not be completely released, thus allowing the actuator 310 to more stably abut against the first electrode 210, ensuring the continuous conduction of the protection circuit. In one embodiment, the elastic element 320 can be a compression spring, tension spring, sheet spring, etc., and this application does not limit its application. For example... Figure 2 As shown, the elastic element 320 is a compression spring and is sleeved on the outer periphery of the bottom end of the actuating element 310 and abuts against the actuating element 310. The end of the compression spring is fixed to the fixed end 101 on the base 100.

[0055] Of course, please see Figure 13The actuating component 300 can also be an elastic element, with one end fixed to the base 100 and the other end being a free end. The elastic element is electrically connected to the second electrode 220 and has a tendency to move relative to the base 100. Figure 13 As shown, when the other end of the elastic element is engaged with the thermal component 400, the elastic element deforms and is in an energy-storing state. When the thermal component 400 deforms due to heat and is released from engagement with the elastic element, the elastic element releases its energy, thereby moving relative to the base 100 and toward the first electrode 210 until it contacts the first electrode 210. When the elastic element contacts the first electrode 210, the elastic element should not have completely released its energy, thus enabling it to more stably abut against the first electrode 210 and ensuring the continuous conduction of the protection circuit.

[0056] Regarding the motion of the motion component 300 relative to the base 100, it can be one of various motion modes such as sliding or rotation, and this application does not limit it.

[0057] For example, when the movement of the actuating component 300 relative to the base 100 is sliding: a slide rail 110 is provided on the base 100, and the actuating component 300 is slidably disposed on the slide rail 110. Thus, when the actuating component 300 can move relative to the base 100, it can move along the slide rail 110. This allows for precise control of the movement of the actuating component 300, ensuring that the actuating component 300 accurately contacts the first electrode 210. Specifically, for example... Figures 1 to 4 As shown, the slide rail 110 consists of left and right side baffles on the base 100, with the actuator 310 positioned between the left and right side baffles. Thus, when the elastic member 320 releases its energy, the actuator 310 can be driven to slide between the left and right side baffles; for example... Figures 5 to 12 As shown, the slide rail 110 consists of left and right side baffles on the base 100 and a limiting sleeve that is engaged between the two baffles. The limiting sleeve is fitted around the outer periphery of the actuating member 310 and is slidably connected to the actuating member 310, so that the actuating member 310 can only slide in the up and down directions.

[0058] For example, when the motion of the motion component 300 relative to the base 100 is rotation: See [reference] Figure 14 The actuating element 310 is rotatably mounted on the base 100, and the elastic element 320 can provide a force to it, causing it to tend to rotate, such as... Figure 14As shown, when one end of the actuating element 310 is engaged with the thermal component 400, the elastic element 320 remains in an energy-storing state. When the thermal component 400 deforms due to heat and disengages from the actuating element 310, the elastic element 320 releases its energy, thereby driving the actuating element 310 to rotate relative to the base 100, causing one end of the actuating element 310 to move towards the first electrode 210 until it contacts the first electrode 210. When the actuating element 310 contacts the first electrode 210, the elastic element 320 should not be completely released, thus allowing the actuating element 310 to more stably abut against the first electrode 210, ensuring the continuous conduction of the protection circuit. It should be understood that... Figure 14 Only one embodiment in rotation is shown. In addition, the connection position between the elastic member 320 and the actuating member 310 and the snap-fit ​​position between the actuating member 310 and the thermal component 400 can be changed.

[0059] like Figures 1 to 4 The illustration shows an embodiment where there is one thermal component 400. It should be understood that the thermal component 400 in this application can also be multiple (including two or more). Specifically, a balancing member 330 is movably disposed on the actuating component 300. When the thermal response switch is not activated, multiple thermal components 400 are respectively engaged with the balancing member 330, which is in a balanced state, and act on the actuating component 300 through the balancing member 330, thus restricting the movement tendency of the actuating component 300, i.e., the actuating component cannot move relative to the base 100. However, when at least one of the multiple thermal components 400 deforms due to temperature rise and detaches from the balancing member 330, the balancing member 330 loses one engagement position, thereby disrupting its balance. The unbalanced balancing member 330 will move relative to the actuating component 300 and separate from the remaining thermal components 400. At this time, the balancing member 330 can no longer restrict the actuating component 300, and the actuating component 300 releases energy and moves. Multiple thermal components 400 can further improve the sensitivity of the thermal response switch.

[0060] Please see Figure 9 The balancer 330 is rotatably mounted on the actuation assembly 300. The first electrode 210 and the second electrode 220 of the thermal response switch are respectively connected to the control circuit. Two thermal components 400 are distributed on opposite sides of the actuation assembly 300, and both thermal components 400 can receive the heat of the device under protection in real time and continuously. When the device under protection is working normally, the heat it generates is within the normal range, and the thermal response switch is in operation. Figure 9In the non-operational state shown: At this time, the two thermal components 400 will be engaged with the opposite sides of the balance component 330 respectively, so that the balance component 330 is in a balanced state and acts on the actuating component 300. The balance component 330 can be used to restrict the movement of the actuating component 300 relative to the base 100, so that the actuating component 300 cannot contact the first electrode 210 and there is a certain safe distance between the actuating component 300 and the first electrode 210. The second electrode 220 and the first electrode 210 (protection circuit) are in an open state.

[0061] Please see Figure 10 When the device to be protected malfunctions and generates a large amount of heat, the thermal response switch starts to operate: the heat is conducted to the thermal component 400 on the right side, causing the temperature of the thermal component 400 on the right side to rise and exceed the threshold. Then, the thermal component 400 on the right side deforms, and the deformation causes the thermal component 400 on the right side to detach from the balance member 330.

[0062] Please see Figure 11 Since the right thermal component 400 detaches from the balance component 330, the balance of the balance component 330 is disrupted. At this time, the balance component 330 loses its balance. Under the energy release of the actuation component 300, the balance component 330 will rotate relative to the actuation component 300, causing the left thermal component 400 to also lose its restraining function.

[0063] Please see Figure 12 Since both thermal components 400 lose their restriction on the actuating component 300, the actuating component 300 moves relative to the base 100 until it comes into contact with the first electrode 210, which is in the movement path of the actuating component 300. At this time, the second electrode 220 can be connected to the first electrode 210 through the actuating component 300, that is, the protection circuit is connected, thereby protecting the device to be protected.

[0064] Similarly, when both thermal components 400 are deformed, the operation process of the thermal response switch can be referred to the operation process of unilateral deformation as described above, and will not be repeated here.

[0065] Please see Figure 5 and Figure 8 As shown, a through groove 311 is provided at the end of the actuator 310 of the actuating component 300 near the first electrode 210. The balancing component 330 is sleeved on the end of the actuator 310, and the rotating shaft on the balancing component 330 is engaged in the through groove 311, thereby realizing the rotatable connection between the balancing component 330 and the actuating component 300. Of course, in another embodiment, a through hole can also be provided at the end of the actuator 310 of the actuating component 300 near the first electrode 210. When the balancing component 330 is sleeved on the end of the actuator 310, the rotating shaft on the balancing component 330 can pass through the through hole, thereby realizing the rotatable connection between the balancing component 330 and the actuating component 300.

[0066] Please see Figure 8 As shown, in order to increase the contact area between the actuator 310 of the actuator assembly 300 and the first electrode 210, a lug 313 can be provided at the end of the actuator 310, thereby increasing the contact area. In addition, when the actuator 310 is reset, the lug 313 can also drive the balance member 330 sleeved on the outer periphery of the end of the actuator 310 to reset together.

[0067] To prevent accidental movement during transportation and installation from causing malfunction of the thermal response switch, the thermal response switch also includes a pluggable limiting member 520 mounted on the base 100. In non-use states such as transportation and installation, the limiting member 520 limits the actuating component 300 and the balancing component 330, keeping them in a non-operating state. Therefore, after installation, the limiting member 520 can be directly removed, avoiding the cumbersome post-installation adjustments required for the thermal response switch. In other words, the limiting member 520 should be removed when the thermal response switch is in use. Please refer to [link to relevant documentation]. Figures 5 to 8 For the actuating component 300: the limiting member 520 is a pin that passes through the base 100 and the actuating component 300, thereby limiting the actuating component 300; for the balancing component 330: the limiting member 520 is a pin that passes through the base 100 and cooperates with the thermal component 400 to clamp the balancing component 330, thereby keeping it in a balanced state. Of course, in other embodiments, the clamping and passing limiting forms can be replaced or combined, and this application does not limit them.

[0068] Please see Figures 1 to 14 The thermal component 400 includes a thermal element 410, one end of which is fixedly disposed on the base 100, and the other end of which is used to engage with the actuation component 300 when the thermal response switch is not activated, thereby restricting the movement of the actuation component 300 relative to the base 100 and ensuring the disconnection of the protection circuit.

[0069] To improve the stability of the engagement between the thermal element 410 and the actuating component 300, the thermal element 410 may further include a body of the thermal element 410 and a engaging portion 411 disposed on the body of the thermal element 410. One end of the body of the thermal element 410 is fixedly disposed on the base 100, and the other end of the body of the thermal element 410 is provided with the engaging portion 411. The engaging portion 411 forms an angle with the body, such as a right angle, an acute angle, or an obtuse angle, thereby forming a hook-like structure through the engaging portion 411, thus restricting the movement of the actuating component 300. In one embodiment, such as... Figures 1 to 4 The snap-fit ​​portion 411 is integrally formed with the body of the thermal element 410. In one embodiment, such as... Figures 5 to 12 The snap-fit ​​part 411 and the body of the thermal element 410 are molded separately and then assembled into a whole. The snap-fit ​​part 411 can be an insulating part.

[0070] Please see Figures 1 to 14 The thermal component 400 also includes a temperature sensing element 420 in contact with the thermal element 410. The temperature sensing element 420 is in contact with the device to be protected to receive and sense the heat of the device to be protected.

[0071] Please see Figures 5 to 8 The thermal response switch also includes a reset member 510 movably disposed on the base 100. The drive end of the reset member 510 is driven to cooperate with the actuation component 300. Thus, after the thermal response switch is activated (i.e., after the actuation component 300 contacts the first electrode 210), after the fault is cleared, an external force can be applied to the reset member 510, causing the reset member 510 to drive the actuation component 300 to separate from the first electrode 210 until the actuation component 300 is reset and re-engaged with the thermal component 400 and remains in the energy storage state. For example Figures 5 to 7 As shown, the reset member 510 can be a reset rod. The reset member 510 is slidably disposed on the base 100, and the sliding direction of the reset member 510 is the same as the sliding direction of the actuating member 310. One end of the reset member 510 serves as a driving end, and the driving end of the reset member 510 passes through the first electrode 210 on the base 100 and corresponds to the end of the actuating member 310. Thus, when the actuating member 310 contacts the first electrode 210 and needs to be reset, such as... Figure 7 As shown, pushing the reset member 510 downwards causes the driving end of the reset member 510 to push the actuator 310 downwards, causing the actuator 310 to continuously store energy until the balance member 330 on the actuator 310 resets and continues to engage with the thermal component 400 and is in a balanced state. At this point, the actuator 310 resets, meaning that the thermal component 400 can restrict the movement of the actuator 310 through the balance member 330. Figure 2 As shown, when there is no balancing component 330, the reset component 510 can directly push the actuating component 310 until the actuating component 310 and the thermal component 400 are re-engaged, and the reset is completed.

[0072] Please see Figure 8 Furthermore, the actuator 310 of the actuating component 300 is provided with a positioning groove 312 for accommodating the drive end. The shape of the positioning groove 312 matches the shape of the drive end, which facilitates the end drive engagement between the reset member 510 and the actuator 310. This allows the reset member 510 to accurately drive the actuating component 300 to reset. At the same time, it also avoids interference caused by the reset member 510 to the movement of the actuating component 300 when it releases energy.

[0073] Please see Figures 1 to 14The thermal response switch also includes a flexible connection 230. The second electrode 220 is connected to the actuation component 300 through the flexible connection 230. This avoids interference between the second electrode 220 and the movement of the actuation component 300, effectively improving the reliability and stability of the connection between the second electrode 220 and the actuation component 300.

[0074] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A heat responsive switch characterized by comprising: The thermal response switch comprises a base (100) and a first electrode (210), a second electrode (220), a moving assembly (300) and a thermal sensitive assembly (400) arranged on the base (100), the second electrode (220) is electrically connected with the moving assembly (300), the thermal sensitive assembly (400) is clamped with the moving assembly (300), the thermal sensitive assembly (400) is used for receiving heat of a device to be protected to be clamped with the moving assembly (300) to make the moving assembly (300) movable relative to the base (100) and in contact with the first electrode (210) to be conducted, the thermal response switch comprises a plurality of thermal sensitive assemblies (400), a balance piece (330) is movably arranged on the moving assembly (300), and the plurality of thermal sensitive assemblies (400) are respectively clamped with the moving assembly (300) through the balance piece (330) to limit the balance piece (330) to keep a balance state.

2. The thermally responsive switch of claim 1, wherein, The thermal sensitive assembly (400) is clamped with the moving assembly (300) to limit the moving assembly (300) to keep an energy storage state, and the thermal sensitive assembly (400) is unclamped with the moving assembly (300) to make the moving assembly (300) release energy and move relative to the base (100).

3. The thermally responsive switch of claim 2, wherein the thermally responsive switch is configured to be activated by a temperature of at least about 100 °C. The moving assembly (300) comprises a moving piece (310) and an elastic piece (320) connected with each other, the moving piece (310) is electrically connected with the second electrode (220) and clamped with the thermal sensitive assembly (400), and the elastic piece (320) is used for providing an acting force to the moving piece (310) to make the moving piece (310) have a tendency to move towards the first electrode (210).

4. The thermally responsive switch of claim 1, wherein the thermally responsive switch is configured to be activated by a temperature of at least about 100 °C. When at least one of the thermal sensitive assemblies (400) is deformed to be unclamped with the balance piece (330), the balance piece (330) is unbalanced and moves relative to the moving assembly (300) to make the moving assembly (300) unclamped with the plurality of thermal sensitive assemblies (400).

5. The thermally responsive switch of claim 4, wherein the thermally responsive switch is configured to be activated by a temperature of at least about 100 °C. The thermal response switch further comprises a limiting piece (520) pluggably arranged on the base (100), and the limiting piece (520) is used for limiting the moving assembly (300) and / or the balance piece (330).

6. The thermoresponsive switch according to any one of claims 1 to 5, wherein The thermal sensitive assembly (400) comprises a thermal sensitive element (410), one end of the thermal sensitive element (410) is fixedly arranged on the base (100), and the other end of the thermal sensitive element (410) is used for clamping with the moving assembly (300).

7. The thermally responsive switch of claim 6, wherein the thermally responsive switch is configured to be activated by a temperature of at least about 100 °C. The thermal sensitive element (410) comprises a body fixedly arranged on the base (100) and a clamping part (411) arranged on the other end of the body, the clamping part (411) is arranged at an angle with the body, and the clamping part (411) is used for clamping with the moving assembly (300).

8. The thermally responsive switch of claim 6, wherein the thermally responsive switch is configured to be activated by a temperature of about 100 °C. The thermal sensitive assembly (400) further comprises a temperature sensing element (420) in contact with the thermal sensitive element (410), and the temperature sensing element (420) is corresponded with a position of the device to be protected to receive heat of the device to be protected.

9. The thermoresponsive switch of any one of claims 1 to 5, wherein, The heat-responsive switch further comprises a reset member (510) movably arranged on the base (100), a driving end of the reset member (510) is in driving cooperation with the action assembly (300), and the reset member (510) is used for driving the action assembly (300) to disconnect from the first electrode (210) and reset.

10. The thermally responsive switch of claim 9, wherein the thermally responsive switch is configured to be activated by a temperature of at least about 100 °C. The reset member (510) is slidably arranged on the base (100), and the driving end of the reset member (510) penetrates through the first electrode (210) and is in driving cooperation with the action assembly (300).

11. The thermally responsive switch of claim 9, wherein the thermally responsive switch is configured to be activated by a temperature of about 50°C to about 60°C. The action assembly (300) is further provided with a positioning groove (312) for matching and accommodating the driving end, and the shape of the positioning groove (312) is matched with the shape of the driving end.

12. The thermally responsive switch of any one of claims 1 to 5, wherein, The heat-responsive switch further comprises a soft connection (230), and the second electrode (220) is connected with the action assembly (300) through the soft connection (230).

13. The thermally responsive switch of any one of claims 1 to 5, wherein the thermally responsive switch is a thermochromic switch. The base (100) is further provided with a sliding rail (110), and the action assembly (300) is slidably arranged on the sliding rail (110).

14. A control circuit, characterized by The heat-responsive switch comprises the heat-responsive switch according to any one of claims 1 to 13. The heat-responsive switch comprises the heat-responsive switch according to any one of claims 1 to 13.

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