Potentiometer and radiant cooker

Abstract

The utility model belongs to the technical field of electric appliances, and particularly discloses a potentiometer and an electric ceramic cooker. The potentiometer comprises a box body, a circuit board, a movable part and a trigger part. A first limiting structure is arranged on the box body; the circuit board is arranged on the box body and is fixed relative to the box body; a power regulation trigger position and a multifunctional trigger position are arranged on the circuit board; the movable part is movably arranged on the box body and can move relative to the circuit board, a second limiting structure is arranged on the movable part, and the second limiting structure can move to abut against or be separated from the first limiting structure; the trigger part is arranged on the movable part and can move synchronously with the movable part to make contact with the power adjusting trigger position or the multifunctional trigger position, and when the second limiting structure abuts against the first limiting structure, the movable part makes contact with the multifunctional trigger position. After the second limiting structure abuts against the first limiting structure, the movable part can drive the triggering part to make contact with the power adjusting triggering position again. The potentiometer is simple in structure, and can trigger other functional signals except for power regulation.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, and in particular to a potentiometer and an electric ceramic stove. Background Technology

[0002] Some household appliances that require adjustable output power (such as electric ceramic cookers) are generally equipped with a potentiometer, which users can operate to control the appliance.

[0003] However, with the changing market demands, users are increasingly looking for multifunctional home appliances. Existing potentiometers are limited in function, only providing voltage / resistance adjustment in a single on / off state. They cannot trigger signals to add other functions (for example, when existing potentiometers are used in ceramic cooktops with dual heating coils, they can only control the cooktop to heat one coil at a time, and cannot control both heating coils to heat simultaneously). Moreover, existing potentiometers have complex structures and are costly. Utility Model Content

[0004] One of the technical problems solved by this utility model is to provide a potentiometer with a simple structure and low cost.

[0005] The second technical problem solved by this utility model is to provide an electric ceramic stove with a simple structure and low cost.

[0006] The first technical problem mentioned above is solved by the following technical solution:

[0007] Potentiometer, including:

[0008] A box body, wherein a first limiting structure is provided on the box body;

[0009] A circuit board is disposed on the housing and fixed in position relative to the housing. The circuit board is provided with a power adjustment trigger position and a multi-function trigger position.

[0010] The movable part is movably disposed on the box and can move relative to the circuit board. The movable part is provided with a second limiting structure, which can move to abut or separate from the first limiting structure.

[0011] A trigger part is disposed on the movable part and can move synchronously with the movable part to contact the power adjustment trigger position or the multi-function trigger position. When the second limiting structure abuts against the first limiting structure, the movable part contacts the multi-function trigger position. After the second limiting structure abuts against the first limiting structure, the movable part can drive the trigger part to re-contact the power adjustment trigger position.

[0012] The potentiometer described in this utility model has the following advantages compared with the prior art:

[0013] When this potentiometer is applied to an appliance, when the trigger part contacts the power adjustment trigger position, it activates the power adjustment setting on the appliance. When the trigger part contacts the multi-function trigger position, it activates other functions besides the power adjustment setting. For example, when this potentiometer is applied to an induction cooker, when the trigger part contacts the power adjustment trigger position, it activates the power adjustment setting of the single-coil heating mode. When the trigger part contacts the multi-function trigger position, it activates the dual-coil heating function of the induction cooker, enabling it to operate in dual-coil heating mode to meet the user's multi-functional heating needs.

[0014] Meanwhile, in this potentiometer, a first limiting structure is provided on the housing, and a second limiting structure is provided on the movable part. When the second limiting structure abuts against the first limiting structure, the movable part contacts the multi-function trigger position, and after the second limiting structure abuts against the first limiting structure, the movable part can drive the trigger part to re-contact the power adjustment trigger position. This design allows the potentiometer to automatically switch to the power adjustment position after triggering functions other than the power adjustment position, avoiding the need for the user to manually adjust to the power adjustment position after triggering related functions, thus improving the user experience.

[0015] In one embodiment, the movable part is rotatably disposed in the box body, the box body is provided with a rotating groove, the first limiting structure is disposed in the rotating groove, and the second limiting structure is located in the rotating groove and can rotate along the rotating groove.

[0016] In one embodiment, the housing is provided with a locking slot, the locking slot including a groove structure and corresponding to the power adjustment trigger position, and when the movable part engages with the locking slot, the trigger part contacts the power adjustment trigger position; and / or

[0017] The housing is provided with a contact guide, which includes a guide slope and is corresponding to the multi-functional trigger position. After the movable part contacts the contact guide, the movable part can move back along the contact guide to engage with the locking position.

[0018] In one embodiment, there are multiple power adjustment trigger bits, each with a different resistance value to output a different signal. The multiple power adjustment trigger bits are equally spaced along the circumferential direction, and the triggering part can contact one of the power adjustment trigger bits.

[0019] The box body is provided with multiple locking positions evenly distributed along the circumference. The movable part can move to engage with any of the locking positions. Each locking position corresponds to a power adjustment trigger position.

[0020] In one embodiment, the number of the multi-function trigger bits is one, and the multi-function trigger bits are disposed between the power adjustment trigger bit with the largest resistance value and the power adjustment trigger bit with the smallest resistance value. The resistance value of the multi-function trigger bits is different from the resistance value of each of the power adjustment trigger bits.

[0021] In one embodiment, the housing is provided with a contact guide position, which is corresponding to the multi-functional trigger position and includes a guide slope. The movable part can move along the guide slope to engage with the locking position corresponding to the power adjustment trigger position with the smallest resistance value.

[0022] In one embodiment, the active part includes:

[0023] The snap-fit ​​positioning member is movable relative to the housing. The snap-fit ​​positioning member is movable to snap into the housing to limit the contact between the trigger part and the power adjustment trigger position. The snap-fit ​​positioning member is also movable to snap into the housing to limit the contact between the trigger part and the multi-function trigger position.

[0024] An elastic element is connected to the snap-fit ​​positioning element and can switch between a compressed state and a released state. When the trigger part contacts the power adjustment trigger position, the elastic element is in a released state. When the trigger part contacts the multi-functional trigger position, the elastic element is in a compressed state and the elastic potential energy accumulated by the elastic element can drive the trigger part to re-contact the power adjustment trigger position.

[0025] In one embodiment, the movable part further includes a movable part body, which is rotatably disposed on the housing about its own axis. The trigger part, the second limiting structure, and the elastic member are all disposed on the movable part body. In one embodiment, the movable part further includes an auxiliary snap-fit ​​positioning member. The elastic member is inserted and installed on the movable part body, and the auxiliary snap-fit ​​positioning member and the snap-fit ​​positioning member are respectively connected to both ends of the elastic member.

[0026] In one embodiment, the trigger includes:

[0027] The mounting plate is installed on the movable part;

[0028] The first elastic arm is positioned at an angle to the mounting plate and is relatively close to the center of the potentiometer;

[0029] The second elastic arm is angled to the mounting plate and relatively far from the center of the potentiometer; both the first elastic arm and the second elastic arm can contact the power adjustment trigger position or the multi-function trigger position.

[0030] The second technical problem mentioned above is solved by the following technical solution:

[0031] An electric ceramic cooker includes a cooker body, on which an inner ring heating coil and an outer ring heating coil are coaxially arranged. The electric ceramic cooker also includes:

[0032] The potentiometer described above has its circuit board fixedly mounted on the ceramic cooker body;

[0033] The controller is installed on the ceramic cooker body and is connected to the inner ring heating coil, the outer ring heating coil, and the potentiometer. When the trigger part is in contact with the power adjustment trigger position, the controller can control the heating of one of the inner ring heating coil and the outer ring heating coil; when the trigger part is in contact with the multi-function trigger position, the controller can control the heating of both the inner ring heating coil and the outer ring heating coil simultaneously.

[0034] The electric ceramic stove described in this utility model has the following advantages compared with the prior art:

[0035] This ceramic cooktop includes the aforementioned potentiometer. When the trigger part of the ceramic cooktop contacts the power adjustment trigger position, it activates the power adjustment setting. When the trigger part contacts the multi-function trigger position, it activates other functions besides the power adjustment setting. For example, when this potentiometer is used on the ceramic cooktop, when the trigger part contacts the power adjustment trigger position, it activates the power adjustment setting of the single-coil heating mode. When the trigger part contacts the multi-function trigger position, it activates the dual-coil heating function, enabling the ceramic cooktop to operate in dual-coil heating mode to meet the user's multi-functional heating needs.

[0036] Meanwhile, the potentiometer in this ceramic cooker features a first limiting structure on the housing and a second limiting structure on the movable part. When the second limiting structure abuts against the first limiting structure, the movable part contacts the multi-function trigger position. After the second limiting structure abuts against the first limiting structure, the movable part can drive the trigger position to re-contact the power adjustment trigger position. This design allows the potentiometer to automatically switch to the power adjustment position after triggering functions other than the power adjustment setting, avoiding the need for manual adjustment after triggering related functions and improving the user experience. Attached Figure Description

[0037] Figure 1 A schematic diagram of the potentiometer provided in an embodiment of this utility model;

[0038] Figure 2 A cross-sectional structural schematic diagram of the potentiometer provided in an embodiment of this utility model;

[0039] Figure 3This is an exploded view of the potentiometer provided in an embodiment of the present invention;

[0040] Figure 4 A schematic diagram showing the potentiometer with the circuit board removed and the movable part not properly installed on the housing, according to an embodiment of this utility model.

[0041] Figure 5 This is a schematic diagram showing the potentiometer with its circuit board removed, the movable part installed on the housing, and the second limiting structure abutting against one side of the first limiting structure, as provided in this embodiment of the utility model.

[0042] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0043] Figure 7 This is a schematic diagram showing the second limiting structure abutting against the other side of the first limiting structure after the circuit board of the potentiometer is hidden, the movable part is installed on the housing, and the second limiting structure abuts against the other side of the first limiting structure, according to an embodiment of the utility model.

[0044] Figure 8 for Figure 7 Enlarged view of point B in the middle;

[0045] Figure 9 A schematic diagram of the surface of the circuit board of the potentiometer provided in the embodiment of this utility model, which is provided with a power adjustment trigger position and a multi-function trigger position;

[0046] Figure 10 A schematic diagram of the housing from one perspective in the potentiometer provided in this embodiment of the utility model;

[0047] Figure 11 for Figure 10 Enlarged view of point C in the middle;

[0048] Figure 12 This is a schematic diagram showing the locking and positioning member of the movable part of the potentiometer provided in this embodiment of the utility model when it is locked to the locking position corresponding to the zero position.

[0049] Figure 13 This is a schematic diagram showing the potentiometer provided in this embodiment of the present invention when the snap-fit ​​positioning member of the movable part is snapped into the contact guide position corresponding to the multi-functional trigger position;

[0050] Figure 14 A schematic diagram of the structure of the movable part in the potentiometer provided in this embodiment of the utility model;

[0051] Figure 15 A cross-sectional view of the movable part in the potentiometer provided in this embodiment of the utility model;

[0052] Figure 16A schematic diagram showing the auxiliary snap-fit ​​positioning component, the snap-fit ​​positioning component and the elastic component in the potentiometer provided in this embodiment of the utility model, when the elastic component is in the released state after the assembly is in place.

[0053] Figure 17 This is a schematic diagram showing the elastic element in a compressed state when the auxiliary snap-fit ​​positioning component, the snap-fit ​​positioning component, and the elastic element are assembled in place in the potentiometer provided in the embodiment of this utility model.

[0054] Label Explanation:

[0055] 1. Circuit board; 11. Power adjustment trigger position; 12. Multi-function trigger position; 13. Limiting hole; 14. Positioning notch;

[0056] 2. Movable part; 21. Movable part body; 211. Limiting shaft; 212. Mounting column; 213. Lateral mounting hole; 22. Snap-fit ​​positioning component; 23. Elastic component; 24. Auxiliary snap-fit ​​positioning component; 25. Second limiting structure;

[0057] 3. Triggering part; 31. Mounting piece; 32. First elastic arm; 33. Second elastic arm;

[0058] 4. Box body; 41. Locking position; 42. Hollow groove; 43. Contact guide position; 431. Guide slope; 44. Circuit board support position; 45. Abutting part; 46. Insertion protrusion; 47. First limiting structure; 48. Rotation groove. Detailed Implementation

[0059] 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. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0060] In the description of this application, it should be understood that the terms "center", "upper", "lower", "inner", "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 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 of this application.

[0061] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0062] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation" and "connection" 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. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0063] This embodiment provides an electric ceramic stove, which includes an electric ceramic stove body, on which an inner ring heating coil and an outer ring heating coil are coaxially arranged.

[0064] When the cookware to be heated is small, it is placed on the ceramic cooktop and can only cover the smaller inner heating ring. In this case, the inner heating ring is turned on separately.

[0065] When the cookware to be heated is large, placing it on the ceramic cooktop will simultaneously cover both the inner and outer heating rings. The user can then control the outer heating ring to operate alone, or to operate both the inner and outer heating rings simultaneously, as needed.

[0066] In other words, users can control the electric ceramic cooker to perform single-ring heating (i.e., heating one of the inner and outer ring heating rings) or double-ring heating (heating both the inner and outer ring heating rings simultaneously) according to their actual needs.

[0067] In existing technology, ceramic cooktops are generally controlled by potentiometers. The heating mode of a ceramic cooktop typically involves either the inner heating coil or the outer heating coil heating alone. When users are using larger cookware and want both the inner and outer heating coils to work simultaneously to increase cooking speed, ceramic cooktops often cannot meet their needs.

[0068] Furthermore, the more complex the structure of a potentiometer, the higher its cost, which is detrimental to improving the product's market competitiveness.

[0069] See Figures 1-9 This embodiment provides a potentiometer with a relatively simple structure, which greatly reduces the cost of the potentiometer and can meet the multi-functional needs of users, thereby enhancing the market competitiveness of the ceramic cooker equipped with the potentiometer.

[0070] Specifically, the potentiometer includes a housing 4, a circuit board 1, a movable part 2, and a trigger part 3.

[0071] Among them, see Figures 1-8 The box body 4 is provided with a first limiting structure 47.

[0072] Circuit board 1 is mounted on housing 4 and fixed in position relative to housing 4. See also Figure 9The circuit board 1 is provided with a power adjustment trigger bit 11 and a multi-function trigger bit 12.

[0073] The movable part 2 is movably disposed on the housing 4 and can move relative to the circuit board 1. The movable part 2 is provided with a second limiting structure 25, which can move to abut or separate from the first limiting structure 47.

[0074] The trigger part 3 is disposed on the movable part 2 and can move synchronously with the movable part 2 to contact the power adjustment trigger position 11 or the multi-function trigger position 12. When the second limiting structure 25 abuts against the first limiting structure 47, the movable part 2 contacts the multi-function trigger position 12. After the second limiting structure 25 abuts against the first limiting structure 47, the movable part 2 can drive the trigger part 3 to re-contact the power adjustment trigger position 11.

[0075] Specifically, when there are multiple power adjustment trigger positions 11, after the second limiting structure 25 abuts against the first limiting structure 47, the movable part 2 can drive the trigger part 3 to re-contact with the set power adjustment trigger position 11.

[0076] The potentiometer provided in this embodiment has a power adjustment trigger bit 11 and a multi-function trigger bit 12.

[0077] When this potentiometer is applied to an appliance, when the trigger part 3 contacts the power adjustment trigger position 11, the power adjustment setting on the appliance is activated; when the trigger part 3 contacts the multi-function trigger position 12, other functions besides the power adjustment setting are activated. For example, when this potentiometer is applied to an electric ceramic cooktop, when the trigger part 3 contacts the power adjustment trigger position 11, the power adjustment setting of the single-turn heating mode of the electric ceramic cooktop is activated; when the trigger part 3 contacts the multi-function trigger position 12, the dual-turn heating function of the electric ceramic cooktop is activated, causing the electric ceramic cooktop to execute the dual-turn heating mode to meet the user's multi-functional heating needs.

[0078] Meanwhile, in this potentiometer, the housing 4 is provided with a first limiting structure 47, and the movable part 2 is provided with a second limiting structure 25. When the second limiting structure 25 abuts against the first limiting structure 47, the movable part 2 contacts the multi-function trigger position 12, and after the second limiting structure 25 abuts against the first limiting structure 47, the movable part 2 can drive the trigger part 3 to re-contact the power adjustment trigger position 11. This configuration allows the potentiometer to automatically switch to the power adjustment position after triggering functions other than the power adjustment position, avoiding the need for the user to manually adjust to the power adjustment position after triggering related functions, thus improving the user's product experience.

[0079] Specifically, when the potentiometer is applied to an electric ceramic cooker, when the second limiting structure 25 abuts against the first limiting structure 47, the movable part 2 contacts the multi-functional trigger position 12. After the second limiting structure 25 abuts against the first limiting structure 47, the movable part 2 can drive the trigger part 3 to re-contact the power adjustment trigger position 11. This setting allows the electric ceramic cooker to automatically switch to the power adjustment level after the dual-coil heating function is triggered, so that the electric ceramic cooker continues to operate. This avoids the user having to manually adjust to the power adjustment level after triggering the dual-coil heating function, thus improving the user's product experience.

[0080] Understandably, one end of the movable part 2 is located inside the box 4, while the other end extends outside the box 4, to facilitate the user's twisting operation.

[0081] Specifically, see Figure 1 , Figure 2 and Figure 4 In order to achieve stable installation of circuit board 1 inside the housing 4, circuit board support position 44 is provided inside the housing 4, and circuit board 1 can be placed on circuit board support position 44.

[0082] To ensure that the circuit board 1 can be installed in place in one go, so that the positions of the power adjustment trigger position 11 and the multi-function trigger position 12 do not need to be adjusted during installation, a positioning notch 14 is provided on the circuit board 1, and an insertion protrusion 46 that engages with the positioning notch 14 is provided inside the housing 4.

[0083] Meanwhile, in order to prevent the circuit board from detaching from the housing 4 after it is installed, the housing 4 is provided with an abutment 45. After the circuit board 1 is installed, the surface of the circuit board 1 with the power adjustment trigger position 11 and the multi-function trigger position 12 abuts against the circuit board support position 44, and the abutment 45 abuts against the surface of the power adjustment trigger position 11 and the multi-function trigger position 12.

[0084] Specifically, the abutment 45 is provided with a guide avoidance slope so that the circuit board 1 can move along the guide avoidance slope to the lower surface of the abutment 45.

[0085] Specifically, in this embodiment, the circuit board support 44 is ring-shaped.

[0086] Specifically, the electric ceramic cooker also includes a controller. The controller is installed on the electric ceramic cooker body and is connected to the inner ring heating coil, the outer ring heating coil, and the potentiometer. When the trigger part 3 is in contact with the power adjustment trigger position 11, the controller can control the heating of one of the inner ring heating coil and the outer ring heating coil; when the trigger part 3 is in contact with the multi-function trigger position 12, the controller can control the heating of both the inner ring heating coil and the outer ring heating coil simultaneously.

[0087] When applied to an electric ceramic cooktop, this potentiometer works in conjunction with the cooktop's controller. When the movable part 2 moves relative to the circuit board 1, causing the trigger part 3 to contact the power adjustment trigger position 11, the potentiometer sends a signal to the controller, enabling the controller to control the electric ceramic cooktop's single-turn heating. When the movable part 2 moves relative to the circuit board 1, causing the trigger part 3 to contact the multi-function trigger position 12, the potentiometer sends a signal to the controller, enabling the controller to control the electric ceramic cooktop's dual-turn heating.

[0088] Specifically, circuit board 1 is provided with lead terminals for connecting to the controller. The number of lead terminals can be set as needed, and no further restrictions are imposed here.

[0089] Optionally, in this embodiment, the movable part 2 moves relative to the circuit board 1 by rotation. The power adjustment trigger position 11 and the multi-function trigger position 12 are arranged along the circumferential direction.

[0090] Of course, in other embodiments, the movable part 2 can also move up and down relative to the circuit board 1, in which case the power adjustment trigger position 11 and the multi-function trigger position 12 are set up and down.

[0091] See Figure 3 In one embodiment, the trigger part 3 includes a mounting plate 31, a first elastic arm 32, and a second elastic arm 33.

[0092] Among them, mounting plate 31 is installed on the active part 2.

[0093] Specifically, in this embodiment, the mounting plate 31 is provided with at least two mounting holes, and the movable part 2 is provided with at least two mounting posts 212. The mounting posts 212 and the mounting holes are provided in a one-to-one correspondence. The mounting posts pass through their corresponding mounting holes to realize the installation of the mounting plate 31 on the movable part 2. The provision of at least two mounting holes and at least two mounting posts 212 ensures that the mounting plate 31 can move synchronously with the movable part 2 after it is installed in place.

[0094] The first elastic arm 32 is set at an angle to the mounting plate 31 and is relatively close to the center of the potentiometer.

[0095] The second elastic arm 33 is angled to the mounting plate 31 and positioned relatively away from the center of the potentiometer. Both the first elastic arm 32 and the second elastic arm 33 can contact the power adjustment trigger position 11 or the multi-function trigger position 12.

[0096] It is understandable that both the first elastic arm 32 and the second elastic arm 33 have a certain degree of elasticity. The existence of elasticity ensures that when the trigger part 3 contacts the power adjustment trigger position 11 or the multi-function trigger position 12, both the first elastic arm 32 and the second elastic arm 33 can make stable electrical contact with the trigger position. At the same time, when the trigger part 3 rotates with the movable part 2, the existence of elasticity ensures that the first elastic arm 32 and the second elastic arm 33 will not interfere with the rotation of the movable part 2, thus ensuring smooth gear switching.

[0097] The arrangement of the first elastic arm 32 and the second elastic arm 33 ensures that they serve as backups for each other. When one of them fails, the other can continue to ensure that the trigger part 3 is in contact with the power adjustment trigger position 11 or the multi-function trigger position 12.

[0098] Furthermore, in one embodiment, see [link to relevant documentation]. Figure 4 In order to ensure that the axial position of the movable part 2 remains unchanged relative to the circuit board 1, one of the circuit board 1 and the movable part 2 is provided with a limiting hole 13, and the other is provided with a limiting shaft 211 that rotates through the limiting hole 13.

[0099] See Figure 4 In one embodiment, the movable part 2 is rotatably disposed on the box body 4, the box body 4 is provided with a rotating groove 48, the first limiting structure 47 is disposed in the rotating groove 48, and the second limiting structure 25 is located in the rotating groove 48 and can rotate along the rotating groove 48.

[0100] The second limiting structure 25 is located within the rotating groove 48 and can rotate along the rotating groove 48. This arrangement restricts the rotation path of the movable part 2, thereby accurately achieving contact between the trigger part 3 located on the movable part 2 and the power adjustment trigger position 11 or the multi-function trigger position 12. At the same time, the first limiting structure 47 is located within the rotating groove 48, ensuring stable contact between the second limiting structure 25 and the first limiting structure 47, thereby ensuring stable contact between the movable part 2 and the multi-function trigger position 12.

[0101] Optionally, in this embodiment, the rotating groove 48 is basically an annular groove coaxially arranged with the rotating shaft of the movable part 2, thereby accurately defining the rotation path of the movable part 2. The first limiting structure 47 is located within the rotating groove 48, preventing the movable part 2 from rotating 360°. That is, compared to 360°, the rotation range of the movable part 2 lacks the central angle corresponding to the first limiting structure 47.

[0102] For example, see Figure 5 and Figure 6 At this point, the second limiting structure 25 rotates until it abuts against one side of the first limiting structure 47; see also Figure 7 and Figure 8The second limiting structure 25 rotates to abut against the other side of the first limiting structure 47.

[0103] See Figure 4 and Figure 10 In one embodiment, the housing 4 is provided with a locking position 41, which includes a groove structure and is correspondingly provided with the power adjustment trigger position 11. When the movable part 2 is engaged with the locking position 41, the trigger part 3 contacts the power adjustment trigger position 11; and / or

[0104] The housing 4 is provided with a contact guide position 43. The contact guide position 43 includes a guide slope 431 and is correspondingly provided with the multi-functional trigger position 12. After the movable part 2 contacts the contact guide position 43, the movable part 2 can move back along the contact guide position 43 to engage with the locking position 41.

[0105] When the locking position 41 is set, the triggering part 3 contacts the power adjustment triggering position 11 when the moving part 2 is engaged with the locking position 41, so that when the potentiometer is in the power adjustment control position, the triggering part 3 and the power adjustment triggering position 11 can be stably contacted.

[0106] The contact guide 43 is provided so that after the movable part 2 comes into contact with the contact guide 43, the movable part 2 can move back along the contact guide 43 to engage with the locking position 41.

[0107] Specifically, in this embodiment, the box body 4 is provided with a locking position 41 and a contact guide position 43.

[0108] For more details, see Figure 9 and Figure 10 In one embodiment, there are multiple power adjustment trigger bits 11, each with a different resistance value to output a different signal. The multiple power adjustment trigger bits 11 are arranged at equal intervals along the circumferential direction, and the trigger part 3 can contact one of the power adjustment trigger bits 11.

[0109] Correspondingly, the housing 4 is provided with multiple locking positions 41 evenly distributed along the circumference. The movable part 2 can move to engage with any of the locking positions 41. The locking positions 41 are set one-to-one with the power adjustment trigger positions 11.

[0110] There are multiple power adjustment trigger positions 11, and the resistance value of each power adjustment trigger position 11 is different. Each power adjustment trigger position 11 has a different resistance value so as to output different signals. Thus, when the trigger part 3 contacts different power adjustment trigger positions 11, the potentiometer can control the output of different power signals to control the operation of the heating coil of the electric ceramic stove.

[0111] When the movable part 2 moves into position, causing the trigger part 3 to contact any of the power adjustment trigger positions 11, the movable part 2 also simultaneously engages with the corresponding locking position 41 of that power adjustment trigger position 11, thereby restricting the movement of the movable part 2, and ultimately enabling the movable part 2 to stably contact each power adjustment trigger position 11.

[0112] In one embodiment, there is one multi-function trigger bit 12, which is located between the power adjustment trigger bit 11 with the largest resistance value and the power adjustment trigger bit 11 with the smallest resistance value. The resistance value of the multi-function trigger bit 12 is different from the resistance value of each power adjustment trigger bit 11.

[0113] In this embodiment, there is one multi-functional trigger position 12, and the resistance value of the multi-functional trigger position 12 is different from the resistance value of each power adjustment trigger position 11, so that the resistance value between the trigger part 3 and the multi-functional trigger position 12 is unique only when the trigger part 3 is in contact with the multi-functional trigger position 12, and the signal emitted is also unique. This signal serves as the control signal for triggering the dual-ring heating of the electric ceramic stove, and has uniqueness and stability.

[0114] In other words, this potentiometer ensures that there is only one trigger signal for the dual-coil heating mode of the ceramic cooker, which can accurately trigger the dual-coil heating mode.

[0115] In one embodiment, see Figure 10 and Figure 11 The housing 4 is provided with a contact guide position 43, which is corresponding to the multi-functional trigger position 12 and includes a guide slope 431. The movable part 2 can move along the guide slope 431 to engage with the locking position 41 corresponding to the power adjustment trigger position 11 with the smallest resistance value.

[0116] The guide ramp 431 on the contact guide 43 can guide the movable part 2 to move to the locking position 41 corresponding to the power adjustment trigger position 11 with the lowest resistance value. With this configuration, when the dual-ring heating mode is triggered, the movable part 2 can move along the guide ramp 431, thereby enabling the movable part 2 to move stably to the locking position 41 corresponding to the power adjustment trigger position 11 with the lowest resistance value.

[0117] For example, see Figure 9 In this embodiment, there are ten power adjustment trigger positions 11, and the card positions 41 are set one-to-one with the power adjustment trigger positions 11. There is one multi-function trigger position 12.

[0118] When the trigger unit 3 contacts the power adjustment trigger position 11, the ceramic cooker is in single-ring heating mode; in this mode, the user can switch between inner ring heating and outer ring heating modes by operating the control panel on the ceramic cooker.

[0119] The ten power adjustment trigger positions 11 correspond to ten different gears: zero, first, second, third, fourth, fifth, sixth, seventh, eighth, and ninth gears, arranged sequentially in a clockwise direction. The power adjustment trigger position 11 is set to the ninth gear.

[0120] The multi-function trigger position 12 is located between the zero and ninth gears.

[0121] The movable part 2 can rotate clockwise and counterclockwise. The heating power is lowest at the zero setting and highest at the ninth setting. Optionally, the heating power at the zero setting is zero, meaning the resistance is highest at the zero setting, and the output heating power signal is zero, so that the zero setting is used as the off position.

[0122] The multi-function trigger position 12 is located between the ninth and zero positions and is used as a function switching position. During the rotation of the trigger unit 3 from the ninth position to the zero position, when the trigger unit 3 rotates to contact the multi-function trigger position 12, the dual-ring heating of the ceramic cooker is triggered. At the same time, the movable part 2 can drive the trigger unit 3 to re-contact the power adjustment trigger position 11 corresponding to the ninth position, so that in the dual-ring heating mode, the heating power of both the inner and outer ring heating rings is at its maximum.

[0123] It is understandable that, due to the presence of the first limiting structure 47 and the second limiting structure 25, the triggering part 3 cannot rotate from the zero gear to the ninth gear. That is, when the first limiting structure 47 and the second limiting structure 25 abut against each other, the triggering part 3 can be restricted from rotating from the zero gear to the ninth gear.

[0124] Specifically, at each trigger position (zero, first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, and function switching positions), a metal foil with a different resistance value is provided. Optionally, the metal foil is copper foil.

[0125] Understandably, when the ceramic cooktop is in single-ring heating mode, it can switch between various levels: zero, one, two, three, four, five, six, seven, eight, and nine. When the ceramic cooktop is in dual-ring heating mode, it can switch between various levels: zero, one, two, three, four, five, six, seven, eight, and nine.

[0126] Specifically, see Figure 3 and Figure 10 A hollow groove 42 is provided inside the box body 4, and a plurality of slots protrude outward along the circumference of the hollow groove 42, which are slots 41. Optionally, in this embodiment, the slot 41 is a groove with a triangular cross-section.

[0127] Specifically, in this embodiment, the hollow groove 42 is located within the circuit board support position 44.

[0128] Specifically, see Figures 10-13 There is a contact guide 43 between any two adjacent locking positions 41. When the locking positioning member 22 is locked into one of the locking positions 41, the elastic member 23 is in a released state, and the locking positioning member 22 is also in a released state. When the locking positioning member 22 rotates to abut against the contact guide 43, the elastic member 23 is in a compressed state, and the locking positioning member 22 is also in a compressed state. That is, during the potentiometer's range switching process, the elastic member 23 will experience a state switch from released, compressed, and then released again. When the locking positioning member 22 contacts the contact guide 43, it will also emit a sound to indicate to the user that the range has changed.

[0129] It is understandable that the dual-ring heating mode can only be triggered when the locking and positioning component 22 moves to the contact guide position 43 between the locking position 41 corresponding to the zero gear and the locking position 41 corresponding to the ninth gear.

[0130] See Figures 14-17 In one embodiment, the movable part 2 includes a snap-fit ​​positioning member 22 and an elastic member 23.

[0131] The snap-fit ​​positioning member 22 is movable relative to the housing 4. The snap-fit ​​positioning member 22 is movable to snap into the housing 4 to limit the contact between the trigger part 3 and the power adjustment trigger position 11. The snap-fit ​​positioning member 22 is also movable to snap into the housing 4 to limit the contact between the trigger part 3 and the multi-function trigger position 12.

[0132] The elastic element 23 is connected to the snap-fit ​​positioning element 22 and can switch between a compressed state and a released state. When the trigger part 3 contacts the power adjustment trigger position 11, the elastic element 23 is in a released state. When the trigger part 3 contacts the multi-functional trigger position 12, the elastic element 23 is in a compressed state and the elastic potential energy accumulated by the elastic element 23 can drive the trigger part 3 to re-contact the power adjustment trigger position 11.

[0133] When the locking and positioning member 22 moves to lock with the housing 4 to restrict the contact between the trigger part 3 and the power adjustment trigger position 11, the moving part 2 locks with the housing 4 without external force and will not move relative to the housing 4, thereby ensuring stable contact between the trigger part 3 and the power adjustment trigger position 11.

[0134] Similarly, when the locking positioning member 22 moves to lock with the housing 4 to restrict the contact between the trigger part 3 and the multi-functional trigger position 12, the moving part 2 locks with the housing 4 without external force and will not move relative to the housing 4, thereby ensuring stable contact between the trigger part 3 and the multi-functional trigger position 12.

[0135] The elastic element 23 allows the locking and positioning element 22 to extend and retract relative to the main body 21 of the movable part 2 during the movement of the movable part 2 relative to the circuit board 1. This allows the locking and positioning element 22 to have a compressed state and a released state. When the locking and positioning element 22 is in the compressed state, it will not interfere with the movement of the movable part 2. When the locking and positioning element 22 is in the released state, it can be stably locked with the box 4.

[0136] With the presence of the elastic element 23, when the trigger part 3 contacts the multi-functional trigger position 12, the elastic element 23 is in a compressed state and accumulates elastic potential energy. This elastic potential energy can drive the moving part 2 to move, thereby causing the trigger part 3 to move again and contact the power adjustment trigger position 11.

[0137] Furthermore, in one embodiment, the active part 2 also includes an active part body 21, which is rotatably disposed on the housing 4 about its own axis. The trigger part 3, the second limiting structure 25 and the elastic member 23 are all disposed on the active part body 21.

[0138] See Figures 15-17 In one embodiment, the movable part 2 further includes an auxiliary snap-fit ​​positioning member 24, and an elastic member 23 is installed through the movable part body 21. The auxiliary snap-fit ​​positioning member 24 and the snap-fit ​​positioning member 22 are respectively connected to the two ends of the elastic member 23.

[0139] The user operates the active part 21, causing the active part 21 to rotate around its own axis, thereby driving the trigger part 3 to move.

[0140] Since the ten locking positions 41 are evenly spaced along the circumference, meaning that five pairs of locking positions 41 are arranged opposite each other, auxiliary locking and positioning member 24 and locking and positioning member 22 are respectively connected to both ends of elastic member 23 to ensure the balance of the rotation of movable part 2. With this arrangement, when the potentiometer is in any position between zero and nine, locking and positioning member 22 engages with the locking position 41 corresponding to the current position, and auxiliary locking and positioning member 24 engages with another locking position 41 opposite to that locking position 41, thus fully ensuring the stability of limiting the movement of movable part 2.

[0141] Optionally, in this embodiment, the auxiliary snap-fit ​​positioning member 24 and the snap-fit ​​positioning member 22 have the same structure. Both are integrally formed structures, including a small diameter section and a large diameter section. The free end of the elastic member 23 is sleeved on the small diameter section, and the free end of the large diameter section is hemispherical. The free end of the large diameter section can snap onto the snap-fit ​​position 41 or abut against the contact guide position 43.

[0142] To facilitate the assembly of the movable part 2, a transverse mounting hole 213 is provided on the movable part body 21. After the auxiliary snap-fit ​​positioning member 24 and the snap-fit ​​positioning member 22 are respectively assembled to both ends of the elastic member 23, the assembled component can be passed through the transverse mounting hole 213. Due to the restriction of the locking position 41 and the contact guide position 43 inside the box 4, the auxiliary snap-fit ​​positioning member 24 and the snap-fit ​​positioning member 22 will not detach from the movable part body 21.

[0143] Optionally, in this embodiment, the elastic element 23 is a compression spring.

[0144] For example, the method of using the electric ceramic stove provided in this embodiment is as follows:

[0145] Users manually operate the control panel of the ceramic cooker to select either the inner ring heating mode or the outer ring heating mode in the single-ring control; users rotate the movable part 2 to allow the ceramic cooker to switch between various levels of the single-ring heating mode.

[0146] When the user needs to control the ceramic cooker to the dual-ring heating mode, the user rotates the movable part 2 so that the trigger part 3 contacts the multi-functional trigger position 12. At this time, the dual-ring heating mode is triggered, and the user rotates the movable part 2 so that the ceramic cooker can switch between the various levels of the dual-ring heating mode.

[0147] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0148] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A potentiometer, characterized in that, include: Box body (4), wherein a first limiting structure (47) is provided on the box body (4); A circuit board (1) is disposed on the box (4) and fixed in position relative to the box (4). The circuit board (1) is provided with a power adjustment trigger position (11) and a multi-function trigger position (12). The movable part (2) is movably disposed on the box body (4) and can move relative to the circuit board (1). The movable part (2) is provided with a second limiting structure (25), which can move to abut or separate from the first limiting structure (47). The trigger part (3) is disposed on the movable part (2) and can move synchronously with the movable part (2) to contact the power adjustment trigger position (11) or the multi-function trigger position (12). When the second limiting structure (25) abuts against the first limiting structure (47), the movable part (2) contacts the multi-function trigger position (12). After the second limiting structure (25) abuts against the first limiting structure (47), the movable part (2) can drive the trigger part (3) to re-contact the power adjustment trigger position (11).

2. The potentiometer according to claim 1, characterized in that, The movable part (2) is rotatably disposed in the box body (4). A rotating groove (48) is provided in the box body (4). The first limiting structure (47) is disposed in the rotating groove (48). The second limiting structure (25) is located in the rotating groove (48) and can rotate along the rotating groove (48).

3. The potentiometer according to claim 1, characterized in that, The housing (4) is provided with a locking slot (41), the locking slot (41) includes a groove structure and is correspondingly provided with the power adjustment trigger position (11). When the movable part (2) is engaged with the locking slot (41), the trigger part (3) contacts the power adjustment trigger position (11); and / or The box body (4) is provided with a contact guide (43). The contact guide (43) includes a guide slope (431) and is provided in correspondence with the multi-functional trigger position (12). After the movable part (2) contacts the contact guide (43), the movable part (2) can move back along the contact guide (43) to engage with the locking position (41).

4. The potentiometer according to claim 1, characterized in that, The number of power adjustment trigger bits (11) is multiple, and the resistance value of each power adjustment trigger bit (11) is different so as to output different signals. The multiple power adjustment trigger bits (11) are arranged at equal intervals along the circumferential direction, and the trigger part (3) can contact one of the power adjustment trigger bits (11). The box (4) is provided with a plurality of slots (41) evenly distributed along the circumference. The movable part (2) can move to engage with any of the slots (41). The slots (41) are configured to correspond one-to-one with the power adjustment trigger position (11).

5. The potentiometer according to claim 4, characterized in that, The number of the multi-function trigger bit (12) is 1. The multi-function trigger bit (12) is set between the power adjustment trigger bit (11) with the largest resistance value and the power adjustment trigger bit (11) with the smallest resistance value. The resistance value of the multi-function trigger bit (12) is different from the resistance value of each power adjustment trigger bit (11).

6. The potentiometer according to claim 5, characterized in that, The housing (4) is provided with a contact guide position (43), which is corresponding to the multi-functional trigger position (12) and includes a guide slope (431). The movable part (2) can move along the guide slope (431) to engage with the locking position (41) corresponding to the power adjustment trigger position (11) with the smallest resistance value.

7. The potentiometer according to claim 1, characterized in that, The active part (2) includes: The snap-fit ​​positioning member (22) is movable relative to the housing (4). The snap-fit ​​positioning member (22) is movable to snap into the housing (4) to limit the contact between the trigger part (3) and the power adjustment trigger position (11). The snap-fit ​​positioning member (22) is movable to snap into the housing (4) to limit the contact between the trigger part (3) and the multi-functional trigger position (12). The elastic element (23) is connected to the snap-fit ​​positioning element (22) and can switch between a compressed state and a released state. When the trigger part (3) contacts the power adjustment trigger position (11), the elastic element (23) is in a released state. When the trigger part (3) contacts the multi-functional trigger position (12), the elastic element (23) is in a compressed state and the elastic potential energy accumulated by the elastic element (23) can drive the trigger part (3) to re-contact the power adjustment trigger position (11).

8. The potentiometer according to claim 7, characterized in that, The active part (2) also includes an active part body (21), which is rotatably disposed on the box body (4) around its own axis. The trigger part (3), the second limiting structure (25) and the elastic element (23) are all disposed on the active part body (21).

9. The potentiometer according to claim 8, characterized in that, The movable part (2) further includes an auxiliary snap-fit ​​positioning component (24), and the elastic component (23) is installed through the movable part body (21). The auxiliary snap-fit ​​positioning component (24) and the snap-fit ​​positioning component (22) are respectively connected to the two ends of the elastic component (23).

10. The potentiometer according to any one of claims 1-9, characterized in that, The triggering part (3) includes: Mounting piece (31) is mounted on the movable part (2); The first elastic arm (32) is set at an angle to the mounting plate (31) and is relatively close to the center of the potentiometer; The second elastic arm (33) is set at an angle to the mounting plate (31) and is relatively far from the center of the potentiometer; both the first elastic arm (32) and the second elastic arm (33) can contact the power adjustment trigger position (11) or the multi-function trigger position (12).

11. An electric ceramic stove, comprising an electric ceramic stove body, wherein an inner ring heating coil and an outer ring heating coil are coaxially arranged on the electric ceramic stove body, characterized in that, The electric ceramic stove also includes: The potentiometer as described in any one of claims 1-10, wherein the circuit board (1) of the potentiometer is fixedly mounted on the ceramic cooker body; The controller is installed on the ceramic furnace body and is connected to the inner ring heating coil, the outer ring heating coil and the potentiometer. When the trigger part (3) is in contact with the power adjustment trigger position (11), the controller can control the heating of one of the inner ring heating coil and the outer ring heating coil. When the trigger part (3) is in contact with the multi-functional trigger position (12), the controller can control the heating of the inner ring heating coil and the outer ring heating coil simultaneously.

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