A kettle away from seat sensing structure and electric kettle

Abstract

The utility model provides a kind of kettle off seat induction structure and electric kettle, including electric control heating base, weighing assembly, lower coupler, kettle off seat inductor.The top plate of electric control heating base is equipped with let go hole, and weighing assembly is installed in electric control heating base.The lower coupler is installed on weighing assembly by coupler seat, and expose from the let go hole.The kettle off seat inductor is installed on the top plate of electric control heating base, and close to the edge of the shielding disc of coupler seat, alternatively, the kettle off seat inductor is installed on the shielding disc of coupler seat.The kettle off seat inductor senses or measures the kettle bottom placed on the coupler seat.The kettle off seat induction structure provided by the utility model adds kettle off seat inductor in the area opposite at the kettle bottom, whether the kettle can be collected to leave base, and executes weighing zero in off seat state, to avoid the situation that coupler is judged wrong to kettle off seat state due to bad contact.

Description

Technical Field

[0001] This utility model relates to the field of electric kettle technology, and in particular to a kettle removal sensing structure and an electric kettle. Background Technology

[0002] Many automatic electric kettles on the market can detect the water level inside the kettle by weighing. However, due to temperature drift and creep drift of the weighing sensor, the weighing system needs to be zeroed after the kettle is detected to be removed in order to maintain accurate measurement of the water level inside the kettle. Traditionally, the detection of the kettle being removed is based on the disconnection of the electric kettle from the main control circuit board through a coupler. However, the coupler often has occasional poor contact. If the kettle is mistakenly judged to be removed when the coupler has poor contact, and the weighing system is zeroed, the subsequent data on the water level inside the kettle will be incorrect, which may cause the kettle to dry out or overflow when water is added. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model proposes a sensing structure that can accurately sense whether a kettle has left the seat.

[0004] In a first aspect, a kettle-off-seat sensing structure is provided, comprising an electrically controlled heating base, a weighing component, a lower coupler, and a kettle-off-seat sensor, wherein...

[0005] The top plate of the electrically controlled heating base is provided with a clearance hole for the installation of the coupler. The weighing component is installed inside the electrically controlled heating base and close to the clearance hole. The lower coupler is installed on the weighing component through a coupler seat and protrudes from the clearance hole.

[0006] The kettle removal sensor is installed on the top plate of the electric heating base, near the edge of the shielding plate of the coupler base, or it can be installed on the shielding plate of the coupler base. The sensor probe of the kettle removal sensor faces upwards and senses or measures the bottom of the kettle placed on the coupler base. When the user removes the kettle from the coupler base, the kettle removal sensor detects that the kettle has left the base. Alternatively, it can detect and determine the kettle removal by combining the electrical connection between the electric kettle and the main control circuit board via the coupler, and then perform weighing zeroing through the control circuit board of the electric heating base. The kettle removal sensing structure provided by this utility model, by adding a kettle removal sensor in the area opposite the bottom of the kettle, can collect the state of the bottom of the kettle in real time, thereby detecting whether the kettle has been removed or removed from the base. When the kettle is removed from the coupler base, the control circuit board of the electric heating base performs weighing zeroing, avoiding errors in judging the kettle removal state due to poor coupler contact, thus improving the accuracy and reliability of weighing zeroing.

[0007] Preferably, the kettle-off-seat sensor is a proximity sensor or a distance sensor, which can be an ultrasonic, laser, microwave radar, or infrared sensor, offering great flexibility. The appropriate sensor can be selected based on cost requirements, accuracy requirements, or consumer preferences.

[0008] Preferably, the top plate of the electrically controlled heating base has an upward-facing mounting opening in the edge area of ​​the coupler seat shielding plate. The kettle removal sensor is installed in the mounting opening, which is simple in structure and easy to assemble. Preferably, if the kettle removal sensor is a laser or infrared sensor and is installed in the mounting opening of the top plate, the top of the electrically controlled heating base has a cover plate covering the top plate or the mounting opening. The cover plate is entirely transparent, or the area relative to the probe of the kettle sensor is made of a transparent or laser- or infrared-transmitting material, such as a full glass cover plate or a metal cover plate. However, the area at the mounting opening is made of a transparent or laser- or infrared-transmitting material to prevent water and dust from affecting the kettle removal sensor. In addition, the sensing probe of the kettle removal sensor and the bottom surface of the cover have a channel spacing for constructing a transmission, reflection, and reception detection signal channel to avoid affecting the detection. If ultrasonic or microwave radar sensors are used, these sensors have built-in sealing covers, so there is no need to add a cover to avoid affecting the detection. Alternatively, if there is a cover layer on the top plate, holes need to be made in the cover layer to expose the sensing probe of the ultrasonic or microwave radar sensor.

[0009] Preferably, the lower coupler is mounted on the weighing assembly via a coupler seat, the coupler seat having a shielding plate that extends outward and blocks the clearance hole.

[0010] Preferably, the shielding plate may also have an upward-facing assembly port for a kettle removal sensor, which is installed inside the assembly port.

[0011] Preferably, if the kettle-off-seat sensor uses a laser or infrared sensor and is installed inside the assembly port of the shielding plate, the shielding plate is a cover plate that covers the shielding plate or the assembly port. The cover plate is entirely transparent or made of a material that allows laser or infrared light to pass through. Alternatively, a transparent or laser- or infrared-transmitting material, such as a full glass cover plate or a metal cover plate, can be used at the relative position of the probe of the kettle-off-seat sensor. However, using a transparent or laser- or infrared-transmitting material at the assembly port can prevent water and dust from affecting the kettle-off-seat sensor. In addition, the kettle-off-seat sensor is installed in a recessed manner to reserve the minimum detection distance. Specifically, the sensing probe of the kettle-off-seat sensor and the bottom surface of the cover have a channel gap for constructing a transmission, reflection, and reception detection signal channel to avoid affecting the detection. If ultrasonic or microwave radar sensors are used, these sensors have built-in sealing covers, so there is no need to add a cover to avoid affecting the detection. Alternatively, if the shielding plate has a cover layer, holes need to be made in the cover layer to expose the sensing probe of the ultrasonic or microwave radar sensor.

[0012] Preferably, to further improve sensing accuracy and avoid individual kettle removal sensors from malfunctioning, two or more kettle removal sensors can be provided, and they are positioned around the central axis of the clearance hole at the corresponding position on the bottom of the kettle.

[0013] Preferably, the weighing assembly includes a support base, a load cell, and a connecting base. The support base is installed at the bottom of the top plate and near the clearance hole. The fixed end of the load cell is mounted on the support base, and the measuring end of the load cell extends to the clearance hole. The connecting base is an annular plate, which can be circular, square, elliptical, rectangular, etc., and is installed on the measuring end of the load cell, coaxial with the clearance hole. The lower coupler is installed on the connecting base and protrudes from the clearance hole, thus forming a single-sided mounting structure of the weighing assembly. This allows the load cell to be installed with the clearance hole offset, reducing interference between the load cell and the wires or water inlet pipe, avoiding large weighing errors, and significantly reducing the problem of the load cell being damaged by water. In addition, the connecting base has a widened portion extending inward at the location where the load cell is installed, and the measuring end of the load cell extends to the bottom of the widened portion, thereby increasing the contact area between the connecting base and the load cell, further improving the installation firmness and stability of the connecting base.

[0014] Preferably, the support base has a supporting reinforcement portion around its periphery. The supporting reinforcement portion extends towards the periphery of the clearance hole and is offset from the clearance hole. The supporting reinforcement portion forms an L-shaped, V-shaped, arc-shaped, C-shaped, D-shaped, U-shaped, or frame-shaped contour to surround the clearance hole, thereby expanding the supporting area of ​​the support base, increasing its installation area with the top plate, and also increasing the supporting torque to improve the reliability of the support base.

[0015] Secondly, an electric kettle is provided that employs the kettle-off-seat sensing structure described in the first aspect, which can improve the accuracy of the weighing and zeroing action.

[0016] As can be seen from the above description of this utility model, this utility model has the following beneficial effects:

[0017] 1. The kettle removal sensing structure provided by this utility model adds a kettle removal sensor to the area where the electric kettle base and the bottom of the kettle are opposite. It can collect the state of the bottom of the kettle in real time, and thus collect whether the kettle has been taken away or removed from the seat. In the state of removal from the seat, the control circuit board of the electric heating base performs weighing zeroing, which can avoid the situation where the coupler makes a mistake in judging the state of removal from the seat due to poor contact, thereby improving the accuracy and reliability of weighing zeroing.

[0018] 2. The kettle-off-seat sensor is a proximity sensor or a distance sensor, and can use various commercially available and mature sensors such as ultrasonic, laser, microwave radar or infrared sensors, which has great flexibility.

[0019] 3. The kettle-off-seat sensor can be installed on the top plate of the electrically controlled heating base, near the edge of the shielding plate of the coupling seat, or it can be installed on the shielding plate of the coupler seat. The installation position is flexible and has few limitations.

[0020] 4. The weighing component adopts a single-sided installation structure, which keeps most of the weighing sensor away from the clearance hole, reducing interference between the weighing sensor and the wire or water inlet pipe, avoiding large weighing errors, and also greatly reducing the problem of the weighing sensor being damaged by getting wet.

[0021] 5. The connecting seat is widened to increase the contact area between the connecting seat and the weighing sensor, thereby further improving the installation firmness and stability of the connecting seat;

[0022] 6. The support base is provided with a support reinforcement part around its periphery, which is close to and surrounds the clearance hole, thereby expanding the support area of ​​the support base, increasing the installation area between it and the top plate, and also increasing the support torque to improve the reliability of the support base. Attached Figure Description

[0023] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0024] in:

[0025] Figure 1 An axonometric view of an electric kettle Figure 1 ;

[0026] Figure 2 An explosion of an electric kettle Figure 1 ;

[0027] Figure 3 An explosion of an electric kettle Figure 2 ;

[0028] Figure 4 This is a top view of an electric kettle;

[0029] Figure 5 This is a cross-sectional view of an electric kettle; (about Figure 4 (at point AA);

[0030] Figure 6 An axonometric view of an electric kettle Figure 2 ;

[0031] Figure 7 An axonometric view of an electric kettle Figure 3 ;

[0032] Figure 8 This is the axial view of the coupler mount. Figure 1 ;

[0033] Figure 9 This is the axial view of the coupler mount. Figure 2 ;

[0034] Figure 10 It was an explosion of the coupler socket. Figure 1 ;

[0035] Figure 11 It was an explosion of the coupler socket. Figure 2 ;

[0036] Figure 12 It was an explosion of the coupler socket. Figure 3 ;

[0037] Figures 1 to 12The markings are as follows: Electric heating base 1, top plate 11, clearance hole 111, mounting port 112, cover plate 113, weighing component 2, support seat 21, support reinforcement part 211, weighing sensor 22, connecting seat 23, widening part 231, lower coupler 3, kettle off-seat sensor 4, coupler seat 5, shielding plate 51, assembly port 511, cover 512, kettle 6. Detailed Implementation

[0038] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0039] Please see Figures 1 to 11 A kettle-off-seat sensing structure includes an electrically controlled heating base 1, a weighing component 2, a lower coupler 3, and a kettle-off-seat sensor 4, wherein...

[0040] The top plate 11 of the electrically controlled heating base 1 is provided with a clearance hole 111 for the installation of the coupler. The weighing component 2 is installed inside the electrically controlled heating base 1 and supports the lower coupler 3 to protrude from the clearance hole 111. Specifically, the lower coupler 3 is installed on the weighing component 2 through the coupler seat 5.

[0041] The kettle removal sensor 4 is installed on the top plate 11 of the electrically controlled heating base 1, near the edge of the shielding plate 51 of the coupler seat 5, or the kettle removal sensor 4 is installed on the shielding plate 51 of the coupler seat 5. The sensing probe of the kettle removal sensor 4 faces upward and senses or measures the bottom of the kettle 6 placed on the lower coupler 3. When the user removes the kettle 6 from the lower coupler 3, the kettle removal sensor 4 can detect that the kettle 6 has left the seat. Furthermore, it can be combined with the fact that the kettle 6 is electrically disconnected from the electrically controlled heating base 1 through the coupler, to more reliably determine that the kettle has left the seat. The control circuit board of the electrically controlled heating base 1 controls the weighing component 2 to perform weighing zeroing to keep the weighing system accurately weighing the water volume inside the kettle.

[0042] Preferably, the kettle-off-seat sensor 4 is a proximity sensor or a distance sensor, and adopts ultrasonic, laser, microwave radar or infrared sensors, which has great flexibility. The appropriate sensor can be selected according to cost requirements, accuracy requirements or consumer preferences. For example, in this utility model, the kettle-off-seat sensor 4 is an infrared distance sensor, including an infrared emitting tube and an infrared receiving tube. The infrared emitting tube emits infrared light, which is reflected back to the bottom of the kettle 6 and received, amplified and converted into an AD value by the infrared receiving tube. By using the preset AD value and distance correspondence, the distance between the kettle 6 and the coupler shielding plate 51 or the top plate 11 can be determined, so as to accurately determine whether the kettle 6 has left the coupler seat 5. Of course, it can also be further combined with the electrical connection between the kettle 6 and the electrically controlled heating base 1 to obtain a more accurate kettle-off-seat status.

[0043] Regarding the installation method of the kettle-off-seat sensor 4, in one embodiment, the kettle-off-seat sensor 4 is an infrared distance sensor. Please refer to [link to relevant documentation]. Figures 1 to 5 The top plate 11 of the electrically controlled heating base 1 has an upward-facing mounting port 112 near the edge of the shielding plate 51 of the coupler seat 5. The kettle removal sensor 4 is installed in the mounting port 112, which is simple in structure and easy to assemble. Alternatively, the top plate 11 of the electrically controlled heating base 1 includes a glass cover plate 113. The kettle removal sensor 4 is installed in the mounting port 112 within the top plate 11, and the mounting port 112 and the kettle removal sensor 4 are sealed by the cover plate 113 to prevent water and dust from affecting the kettle removal sensor 4. Alternatively, the top plate 11 of the electrically controlled heating base can also be made of other cover plates that can transmit laser or infrared light, or other cover plates such as metal cover plates, but only the area where the sensor probe of the kettle removal sensor 4 is exposed is made of transparent material or other materials that can transmit laser or infrared light. In other embodiments, if an ultrasonic or microwave radar sensor is used, it has its own sealed cover, so there is no need to set a cover plate. Alternatively, a hole needs to be made on the top plate 11 at the corresponding position of the sensing probe of the kettle off-seat sensor 4 to expose the sensing probe of the kettle off-seat sensor 4, so as not to affect the detection.

[0044] Alternatively, in another embodiment, please refer to Figures 6 to 12Also employing an infrared ranging sensor, the lower coupler 3 is mounted on the weighing assembly 2 via a coupler seat 5. The coupler seat 5 has a shielding plate 51 extending outward and blocking the clearance hole 111. The shielding plate 51 has an upward-facing assembly port 511, and the kettle-off-seat sensor 4 is installed inside the assembly port 511. Preferably, the top of the assembly port 511 has a cover 512 made of infrared-transmitting material, and the sensing probe of the kettle-off-seat sensor 4 and the bottom surface of the cover 512 have a gap to form a channel for transmitting, reflecting, and receiving detection signals, thus preventing the kettle-off-seat sensor 4 from being too close to the bottom of the kettle 6 and affecting the detection or ranging results.

[0045] To further improve sensing accuracy and avoid individual sensor failure, in one embodiment, at least two kettle-off-seat sensors 4 can be provided and arranged around the central axis of the clearance hole 111. Of course, to save costs, it is also possible to install only one kettle-off-seat sensor.

[0046] In one embodiment, the weighing assembly 2 includes a support base 21, a weighing sensor 22, and a connecting base 23. The support base 21 is installed at the bottom of the top plate 11 and near the clearance hole 111. The fixed end of the weighing sensor 22 is installed on the support base 21, and the measuring end of the weighing sensor 22 extends to the clearance hole 111. The connecting base 23 is an annular plate, installed on the measuring end of the weighing sensor 22, and coaxial with the clearance hole 111. The lower coupler 3 is installed on the connecting base 23 and protrudes from the clearance hole 111, thereby forming a single-sided installation structure of the weighing assembly 2. This allows the weighing sensor 22 to be installed in a way that largely offsets from the clearance hole 111, which not only reduces interference between the weighing sensor 22 and the wires or water inlet pipe, avoiding large weighing errors, but also significantly reduces the problem of the weighing sensor 22 being damaged by getting wet.

[0047] In addition, a widened portion 231 extending inward is provided at the position where the connecting seat 23 and the weighing sensor 22 are installed. The measuring end of the weighing sensor 22 extends to the bottom of the widened portion 231, thereby increasing the contact area between the connecting seat 23 and the weighing sensor 22, and further improving the installation firmness and stability of the connecting seat 23.

[0048] Based on the above embodiments, the support base 21 is provided with a support reinforcement 211 around its periphery. The support reinforcement 211 extends around the clearance hole 111 and is offset from the clearance hole 111. The support reinforcement 211 forms an L-shaped, V-shaped, arc-shaped, C-shaped, D-shaped, U-shaped or frame-shaped outline to surround the clearance hole 111, thereby expanding the support area of ​​the support base 21, increasing its installation area with the top plate 11, and also increasing the support torque to improve the reliability of the support base 21.

[0049] In another embodiment, an electric kettle 6 is provided, which adopts the above-described kettle 6 off-seat sensing structure, which can improve the accuracy of the weighing and zeroing action.

[0050] The kettle 6 removal sensing structure provided by this utility model, by adding a kettle removal sensor 4 to the corresponding area at the bottom of the kettle, can collect the state of the bottom of the kettle 6 in real time, and thus collect whether the kettle 6 has been taken away or removed from the seat. In the state of removal from the seat, the control circuit board of the electric heating base performs weighing zeroing, which can avoid the situation where the coupler misjudges the state of the kettle 6 being removed from the seat due to poor contact, thereby improving the accuracy and reliability of weighing zeroing.

[0051] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0052] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0053] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0054] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A kettle removal sensing structure, characterized in that, Includes an electrically controlled heating base, a weighing assembly, a lower coupler, and a kettle removal sensor; The top plate of the electrically controlled heating base is provided with a clearance hole. The weighing component is installed inside the electrically controlled heating base and close to the clearance hole. The lower coupler is installed on the weighing component through a coupler seat and protrudes from the clearance hole. The kettle-off-seat sensor is installed on the top plate of the electrically controlled heating base and near the edge of the shielding plate of the coupler base, or the kettle-off-seat sensor is installed on the shielding plate of the coupler base; the sensing probe of the kettle-off-seat sensor faces upward and senses or measures the bottom of the kettle placed on the coupler base.

2. The kettle removal sensing structure according to claim 1, characterized in that, The kettle-off-seat sensor is a proximity sensor or a distance sensor, employing ultrasonic, laser, microwave radar, or infrared sensors.

3. The kettle removal sensing structure according to claim 1, characterized in that, The top plate of the electrically controlled heating base has an upward-facing mounting port, which is located near the edge of the shielding plate of the coupler seat. The kettle removal sensor is installed inside the mounting port.

4. The kettle removal sensing structure according to claim 3, characterized in that, The kettle-off-seat sensor is a laser or infrared sensor and is installed in the mounting port of the top plate. The top of the electrically controlled heating base is provided with a cover plate that covers the top plate or the mounting port. The cover plate is completely transparent or the material that can transmit laser or infrared light is used at the relative position of the probe of the kettle-off-seat sensor. Alternatively, when the kettle-off-seat sensor is an ultrasonic or microwave radar sensor, it is installed in the mounting port of the top plate.

5. The kettle removal sensing structure according to claim 1, characterized in that, The shielding plate of the coupler seat has an upward-facing assembly port, and the kettle removal sensor is installed inside the assembly port.

6. The kettle removal sensing structure according to claim 5, characterized in that, The kettle-off-seat sensor is a laser or infrared sensor and is installed in the assembly port of the top plate. The top of the shielding plate is provided with a cover plate covering the shielding plate or the assembly port. The cover plate is completely transparent or the material that can transmit laser or infrared light is used at the relative position of the probe of the kettle-off-seat sensor. Alternatively, the kettle-off-seat sensor is an ultrasonic or microwave radar sensor and is installed in the assembly port of the shielding plate, and is installed in a recessed manner.

7. The kettle removal sensing structure according to claim 1, characterized in that, At least one kettle-off sensor is provided, and it is positioned around the central axis of the clearance hole corresponding to the bottom of the kettle.

8. The kettle removal sensing structure according to claim 1, characterized in that, The weighing assembly includes a support base, a load cell, and a connecting base. The support base is installed at the bottom of the top plate and near the clearance hole. The fixed end of the load cell is installed on the support base, and the measuring end of the load cell extends to the clearance hole. The connecting base is an annular plate installed on the measuring end of the load cell and coaxial with the clearance hole. The lower coupler is installed on the connecting base and protrudes from the clearance hole. The connecting base has a widened portion extending inward at the position where the load cell is installed, and the measuring end of the load cell extends to the bottom of the widened portion.

9. The kettle removal sensing structure according to claim 8, characterized in that, The support base has a supporting reinforcement on its periphery. The supporting reinforcement extends to the periphery of the relief hole and is offset from the relief hole. The supporting reinforcement forms an L-shaped, V-shaped, arc-shaped, C-shaped, D-shaped, U-shaped or frame-shaped outline to surround the relief hole.

10. An electric kettle, characterized in that, The kettle removal sensing structure according to any one of claims 1 to 9 is adopted.

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