Temperature controller with leakage protection function

Abstract

This application provides a thermostat with leakage current protection, relating to the field of low-voltage electrical technology. The thermostat integrates a leakage current protection mechanism, which includes a magnetic holding component, a moving contact, and a stationary contact. The magnetic holding component is linked to the moving contact. Through the magnetic holding component, the moving contact is driven to disconnect from the stationary contact to achieve leakage current protection, and it can also keep the moving and stationary contacts in a contact or open state. The integrated leakage current protection mechanism gives the thermostat leakage current protection function, improving the safe operation of the device. The integrated design simplifies the device and allows for wider application. The magnetic holding component relies on its own magnetism to keep the moving contact in contact with or separate from the stationary contact. The device does not need to be constantly energized to maintain a closed or open state, reducing power consumption and heating time, extending the device's lifespan, and enabling the device to handle high-current loads.

Description

Technical Field

[0001] This application relates to the field of low-voltage electrical technology, and more specifically, to a thermostat with leakage protection function. Background Technology

[0002] Thermostats are commonly used in daily life or work scenarios to connect to loads and achieve automatic control of the loads. However, in some places such as restrooms, the indoor humidity is high, and water splashes may occur, allowing moisture to enter loads and other devices, affecting their lifespan or causing them to malfunction. In severe cases, it can even cause leakage, posing a serious safety hazard. Summary of the Invention

[0003] The purpose of this application is to address the shortcomings of the prior art by providing a temperature controller with leakage protection function, which can realize leakage protection for the load and improve the safe use performance of the load.

[0004] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows:

[0005] In one aspect of this application, a thermostat with leakage protection function is provided. The thermostat integrates a leakage protection mechanism, which includes a magnetic holding component, a moving contact, and a stationary contact. The magnetic holding component is linked to the moving contact. Through the magnetic holding component, the moving contact is driven to disconnect from the stationary contact to achieve leakage protection, and the moving contact and the stationary contact can also be kept in contact or disconnected.

[0006] Optionally, the magnetic holding assembly includes two sets of magnets, each set of magnets including a first permanent magnet and a second permanent magnet with opposite polarities and arranged opposite to each other. The two first permanent magnets and the two second permanent magnets are respectively arranged adjacent to each other. The moving contact has two moving contacts, which correspond to the first permanent magnet of one set of magnets and the second permanent magnet of the other set of magnets, respectively. The stationary contact has a stationary contact, and the corresponding moving contact and the stationary contact extend between the first permanent magnet and the second permanent magnet of the same set of magnets.

[0007] Optionally, the leakage protection mechanism further includes a coil, with armatures provided on both sides of the coil. The armatures are integrally formed with the stationary contact. One end of the armature is connected to the end of the coil, and the other end extends between the first permanent magnet and the second permanent magnet in the same group. The stationary contact is located at the end of the armature extending between the first permanent magnet and the second permanent magnet in the same group.

[0008] Optionally, when the coil is energized, the magnetized poles of the armature interact with the magnetic poles of the magnet, and the magnet drives the moving contact to contact the stationary contact; when leakage occurs, the coil is energized in reverse, the magnetic poles of the armature change, and the magnet drives the moving contact to disconnect from the stationary contact to achieve leakage protection; when the coil is de-energized, the magnet keeps the moving contact and the stationary contact in contact or disconnected.

[0009] Optionally, the magnetic holding assembly includes a base, in which the two sets of magnets and the moving contact are fitted, and the base is rotatably connected to the thermostat.

[0010] Optionally, the thermostat is provided with a cover plate, the magnetic retaining assembly is disposed on the cover plate, and a torsion spring is also provided between the magnetic retaining assembly and the cover plate to maintain the initial state of the magnetic retaining assembly.

[0011] Optionally, the cover plate is provided with a slot, and the stationary contact is fixed to the cover plate through the slot.

[0012] Optionally, the leakage protection mechanism further includes a zero-sequence current transformer for detecting leakage current and driving the moving contact to separate from the stationary contact through the magnetic latching assembly when leakage occurs, thereby achieving leakage protection.

[0013] Optionally, the thermostat is provided with a load terminal for connecting a load, and the load terminal is connected to the stationary contact.

[0014] Optionally, the temperature controller further includes a power supply back seat, on which a boss is formed, and a through hole is provided on the boss. A top cover is fastened to the base, and a convex shaft is provided on the top cover to engage with the through hole of the boss, so as to position the magnetic holding assembly along the axial direction of the convex shaft.

[0015] The beneficial effects of this application include:

[0016] This application provides a thermostat with leakage current protection. The thermostat integrates a leakage current protection mechanism, eliminating the need for an external leakage current protection structure. This integrated design simplifies the number of components and allows the thermostat with integrated leakage current protection to be used in a wider range of applications. The leakage current protection mechanism includes a magnetic holding component, which is linked to a moving contact to drive the moving contact to contact or separate from the stationary contact, thus closing or opening the device. When leakage occurs, the magnetic holding component drives the moving contact to separate from the stationary contact to provide leakage current protection, thereby improving the device's safe operation. The leakage current protection in this application is achieved through structural interruption, making the leakage current protection function more reliable. The magnetic holding component relies on its own magnetism to keep the moving contact in contact or separate from the stationary contact. This means the device does not need to be constantly energized to maintain a closed or open state, thus reducing power consumption and heating time, extending the device's lifespan, and enabling the device to withstand high current loads. Attached Figure Description

[0017] 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.

[0018] Figure 1 A schematic diagram of the appearance of a thermostat with leakage protection function provided in an embodiment of this application;

[0019] Figure 2 This is one of the structural schematic diagrams of a thermostat with leakage protection function provided in the embodiments of this application;

[0020] Figure 3 A second schematic diagram of a thermostat with leakage protection function provided in this application embodiment;

[0021] Figure 4 A third schematic diagram of a thermostat with leakage protection function provided in this application embodiment;

[0022] Figure 5 A fourth schematic diagram of a thermostat with leakage protection function provided in this application embodiment;

[0023] Figure 6 Fifth schematic diagram of a thermostat with leakage protection function provided in the embodiments of this application;

[0024] Figure 7A schematic diagram of a thermostat with leakage protection function provided in this application embodiment is shown in Figure 6.

[0025] Figure 8 A schematic diagram of the power supply back seat of a thermostat with leakage protection function provided in this application embodiment;

[0026] Figure 9 This is a cross-sectional structural diagram of a thermostat with leakage protection function provided in an embodiment of this application.

[0027] Icons: 10-Power supply backplate; 101-Load terminal; 102-Boss; 102a-Socket; 11-Magnetic latching assembly; 11a-Base; 11b-Top cover; 11b0-Protruding shaft; 111-First permanent magnet; 112-Second permanent magnet; 113-Moving contact; 113a-Moving contact; 114-Stationary contact; 114a-Stationary contact; 115-Coil; 12-Printed circuit board; 13-Zero-sequence current transformer; 141-Wire; 142-Slot; 15-Cover plate; 16-Torsion spring. Detailed Implementation

[0028] 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, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. It should be noted that, unless otherwise specified, 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.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application 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, and therefore should not be construed as a limitation on 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.

[0032] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] 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.

[0034] One aspect of the embodiments of this application refers to... Figure 1 , Figure 2 A thermostat with leakage protection function is provided. The thermostat integrates a leakage protection mechanism, which includes a magnetic holding component 11, a moving contact 113, and a stationary contact 114. The magnetic holding component 11 is linked with the moving contact 113. The magnetic holding component 11 drives the moving contact 113 to disconnect from the stationary contact 114 to achieve leakage protection, and can also keep the moving contact 113 and the stationary contact 114 in a contact or disconnected state.

[0035] The thermostat integrates a leakage protection mechanism, enabling it to have leakage protection functionality. This eliminates the need for an additional external leakage protection structure on the thermostat. The integrated design simplifies the number of components, allowing thermostats with integrated leakage protection to be used in a wider range of applications.

[0036] The leakage current protection mechanism includes a magnetic latching assembly 11, which is linked to a moving contact 113 to drive the moving contact 113 to contact or separate from the stationary contact 114, thereby closing or opening the device. When the device leaks current, the magnetic latching assembly 11 drives the moving contact 113 to separate from the stationary contact 114 to provide leakage current protection, thus improving the safe operation of the device. The leakage current protection in this application is achieved through structural interruption, which makes the leakage current protection function more reliable.

[0037] The magnetic holding assembly 11 can use its own magnetism to keep the moving contact 113 in contact with or separate from the stationary contact 114. In this way, the device does not need to be constantly energized to maintain the closed or open state, which can reduce the power consumption and heat generation time of the device, improve the life of the device, and enable the device to carry high current loads.

[0038] Specifically, the leakage protection mechanism also includes a coil 115, with armatures on both sides of the coil 115, and the armatures are integrally formed with the stationary contact 114. When the coil 115 is energized, the armatures can be magnetized and generate magnetic poles.

[0039] The magnetic holding assembly 11 includes two sets of magnets. Each set of magnets includes a first permanent magnet 111 and a second permanent magnet 112 with opposite polarities and arranged opposite to each other. The two first permanent magnets 111 and the two second permanent magnets 112 are arranged adjacent to each other. The moving contact 113 has two moving contacts 113a, such as... Figure 2 As shown, the two moving contacts 113a correspond to the first permanent magnet 111 of one set of magnets and the second permanent magnet 112 of another set of magnets, respectively; the stationary contact 114 has a stationary contact 114a, and the corresponding moving contact 113a and stationary contact 114a are located between the first permanent magnet 111 and the second permanent magnet 112 of the same set of magnets.

[0040] One end of the armature is connected to the end of the coil 115, and the other end extends between the first permanent magnet 111 and the second permanent magnet 112 of the same group of magnets. The stationary contact 114a is provided on the end of the armature that extends between the first permanent magnet 111 and the second permanent magnet 112 of the same group.

[0041] Both the first permanent magnet 111 and the second permanent magnet 112 are unipolar magnets with opposite polarities. When the coil 115 is energized, it magnetizes the armature, causing the poles of the armature to interact with the poles of the first permanent magnet 111 and the second permanent magnet 112. Consequently, the moving contact 113 moves closer to the stationary contact 114 along with the permanent magnets, achieving contact between the two. When the coil 115 is de-energized, the magnetic force of the first permanent magnet 111 and the second permanent magnet 112 maintains the contact between the moving contact 113 and the stationary contact 114.

[0042] The leakage protection mechanism also includes a zero-sequence current transformer 13 for detecting leakage current and driving the moving contact 113 to separate from the stationary contact 114 through the magnetic holding assembly 11 to achieve leakage protection.

[0043] When leakage protection is activated, coil 115 is reverse-energized, the magnetic poles of the armature change, and the permanent magnet is reverse-driven to move the moving contact 113 away from the stationary contact 114, thus separating the two and completing the leakage protection. At this time, coil 115 is de-energized, and the moving contact 113 and the stationary contact 114 are kept separated by the magnetic force of the first permanent magnet 111 and the second permanent magnet 112.

[0044] For example, such as Figure 3 As shown, when the first permanent magnet 111 is the N pole and the second permanent magnet 112 is the S pole, the coil 115 is forward energized. The magnetized poles of the armature (the armature corresponding to one stationary contact 114a is the S pole, and the armature corresponding to the other stationary contact 114a is the N pole) interact with the magnetic poles of the permanent magnets. Like poles repel and unlike poles attract. At this time, the moving contact 113 and the stationary contact 114 are in contact. Figure 3 (Contact state not shown); when coil 115 is disconnected, this state can be maintained by the magnetic force of the permanent magnet; when the zero-sequence current transformer 13 detects leakage current, coil 115 is reverse-energized, such as... Figure 4 As shown, the magnetic poles of the armature are compared to Figure 3 When the change occurs, the permanent magnet is driven to move in the opposite direction, the contacts are opened, and leakage protection is achieved; when coil 115 is disconnected, the magnetic force of the permanent magnet can maintain this state unchanged.

[0045] The magnetic poles of the first permanent magnet 111 and the second permanent magnet 112 can be interchanged; in this case, the coil 115 can be wound in the opposite direction. For example, such as... Figure 5 As shown, when the first permanent magnet 111 is the S pole and the second permanent magnet 112 is the N pole, the coil 115 is forward-energized. The magnetized poles of the armature interact with the poles of the permanent magnets; like poles repel and unlike poles attract, causing the moving contact 113 and the stationary contact 114 to make contact. When the coil 115 is disconnected, this state can be maintained by the magnetic force of the permanent magnets. When the zero-sequence current transformer 13 detects leakage current, the coil 115 is reverse-energized, as shown in the diagram. Figure 6 As shown, the magnetic poles of the armature change, driving the permanent magnet to move in the opposite direction, and the contacts open, thus achieving leakage protection; when coil 115 is disconnected, the magnetic force of the permanent magnet can maintain this state unchanged.

[0046] By setting up the magnetic holding component 11, it is not necessary to continuously energize the coil 115, which reduces power consumption and heat generation of the coil 115, thereby improving product lifespan.

[0047] This application provides two sets of magnets. The moving contact 113 is provided with two moving contacts 113a, and the two stationary contacts 114 are provided with two stationary contacts 114a. Each moving contact 113a and stationary contact 114a corresponds to a set of magnets. Each moving contact 113a and stationary contact 114a is located between the first permanent magnet 111 and the second permanent magnet 112 of the set.

[0048] The magnetic holding assembly 11 also includes a base 11a and a top cover 11b. The magnet and the moving contact 113 are both fitted into the base 11a and fixed by the top cover 11b.

[0049] The thermostat also includes a power supply backplate 10, such as Figure 8 As shown, a boss 102 is formed on the power supply back seat, and a socket 102a is provided on the boss 102. A convex shaft 11b0 is provided on the upper cover 11b to cooperate with the socket 102a of the boss 102, so as to position the magnetic holding assembly 11 along the axial direction of the convex shaft 11b0, thereby restricting the movement of the magnetic holding assembly 11 in this direction and preventing the moving contact 113 from deviating and failing to reliably contact the stationary contact 114.

[0050] In addition, the thermostat is equipped with a printed circuit board 12 and a load terminal 101, which is connected to the stationary contact 114 via a wire 141.

[0051] For example, such as Figure 2 As shown, the zero-sequence current transformer 13 and the printed circuit board 12 are electrically connected. Two wires 141 pass through the zero-sequence current transformer 13, with one end of each wire connected to both ends of the stationary contact 114 and the other end connected to the load terminal 101. When the stationary contact 114 and the moving contact 113 are in contact, the load terminal 101 is energized through the stationary contact 114, enabling the load to operate normally. When the stationary contact 114 and the moving contact 113 are disconnected, the load's input circuit is disconnected, thus providing power-off protection for the load.

[0052] Reference Figure 7 As shown, a cover plate 15 is also provided below the printed circuit board 12. The base 11a of the magnetic holding assembly 11 is rotatably connected to the cover plate 15, so that the magnetic holding assembly 11 can rotate relative to the cover plate 15, so that the permanent magnet and the moving contact 113 can move closer to or further away from the stationary contact 114.

[0053] like Figure 9 As shown, a torsion spring 16 is also provided between the magnetic holding assembly 11 and the cover plate 15. The torsion spring 16 can maintain the initial relative position of the moving contact 113 and the stationary contact 114.

[0054] Furthermore, the cover plate 15 is also provided with a slot 142, and the stationary contact 114 is also fixed to the cover plate 15 through the slot 142, so that the stationary contact 114 can be stably fixed, thereby achieving reliable contact with the moving contact 113.

[0055] 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 thermostat with leakage current protection function, characterized in that, The thermostat integrates a leakage protection mechanism, which includes a magnetic holding component (11), a moving contact (113), and a stationary contact (114). The magnetic holding component (11) is linked with the moving contact (113). The magnetic holding component (11) drives the moving contact (113) to disconnect from the stationary contact (114) to achieve leakage protection, and can also keep the moving contact (113) and the stationary contact (114) in a contact or disconnected state.

2. The thermostat with leakage protection function according to claim 1, characterized in that, The magnetic holding assembly (11) includes two sets of magnets. Each set of magnets includes a first permanent magnet (111) and a second permanent magnet (112) with opposite polarities and arranged opposite to each other. The two first permanent magnets (111) and the two second permanent magnets (112) are arranged adjacent to each other. The moving contact (113) has two moving contacts (113a). The two moving contacts (113a) correspond to the first permanent magnet (111) of one set of magnets and the second permanent magnet (112) of the other set of magnets, respectively. The stationary contact (114) has a stationary contact (114a). The corresponding moving contacts (113a) and stationary contacts (114a) are located between the first permanent magnet (111) and the second permanent magnet (112) of the same set of magnets.

3. The thermostat with leakage protection function according to claim 2, characterized in that, The leakage protection mechanism also includes a coil (115), on both sides of the coil (115) are provided with armatures, the armatures are integrally formed with the stationary contact (114), one end of the armature is connected to the end of the coil (115) and the other end extends to the first permanent magnet (111) and the second permanent magnet (112) in the same group, and the stationary contact (114a) is provided on the end of the armature extending to the first permanent magnet (111) and the second permanent magnet (112) in the same group of magnets.

4. The thermostat with leakage protection function according to claim 3, characterized in that, When the coil (115) is energized, the magnetized poles of the armature interact with the magnetic poles of the magnet, and the magnet drives the moving contact (113a) to contact the stationary contact (114a). When leakage occurs, the coil (115) is energized in reverse, the magnetic poles of the armature change, and the magnet drives the moving contact (113a) to disconnect from the stationary contact (114a) to achieve leakage protection. When the coil (115) is de-energized, the magnet keeps the moving contact (113a) and the stationary contact (114a) in contact or disconnected state.

5. The thermostat with leakage protection function according to any one of claims 2 to 4, characterized in that, The magnetic holding assembly (11) includes a base (11a), the two sets of magnets and the moving contact (113) are all fitted into the base (11a), and the base (11a) is rotatably connected to the thermostat.

6. The thermostat with leakage protection function according to any one of claims 1 to 4, characterized in that, The thermostat is provided with a cover plate (15), and the magnetic retaining assembly (11) is provided on the cover plate (15). A torsion spring (16) is also provided between the magnetic retaining assembly (11) and the cover plate (15) to maintain the initial state of the magnetic retaining assembly (11).

7. The thermostat with leakage protection function according to claim 6, characterized in that, The cover plate (15) is provided with a slot (142), and the stationary contact (114) is fixed to the cover plate (15) through the slot (142).

8. The thermostat with leakage protection function according to any one of claims 1 to 4, characterized in that, The leakage protection mechanism also includes a zero-sequence current transformer (13) for detecting leakage current and driving the moving contact (113) to separate from the stationary contact (114) through the magnetic holding assembly (11) when leakage occurs, thereby achieving leakage protection.

9. The thermostat with leakage protection function according to any one of claims 1 to 4, characterized in that, The temperature controller is also provided with a load terminal (101) for connecting a load, and the load terminal is connected to the stationary contact (114).

10. The thermostat with leakage protection function according to claim 5, characterized in that, The temperature controller also includes a power supply back seat (10), on which a boss (102) is formed. A socket (102a) is provided on the boss (102). A top cover (11b) is fastened to the base (11a). A convex shaft (11b0) is provided on the top cover (11b) and engages with the socket (102a) of the boss (102) to position the magnetic holding assembly (11) along the axial direction of the convex shaft (11b0).

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