Weighing mechanism and kettle

Abstract

The invention relates to the field of household appliances, and discloses a weighing mechanism and a kettle. The weighing mechanism cannot be damaged due to overload force, overload protection on the weighing detection assembly is formed, and the measurement precision is ensured. The weighing mechanism comprises a middle shell, a weighing detection assembly and a limiting mechanism, the middle shell is arranged between an outer shell and a bottom plate, the middle shell is connected with the outer shell, the middle shell supports the outer shell, the weighing detection assembly is arranged between the middle shell and the bottom plate, and the weighing detection assembly comprises a first detection part and a second detection part which can relatively deform. One of the first detection part and the second detection part supports the middle shell, the other of the first detection part and the second detection part is fixed with the bottom plate, the limiting mechanism comprises a first limiting mechanism, and the first limiting mechanism is used for limiting the downward moving distance of the first detection part or the second detection part fixed with the bottom plate relative to the middle shell.

Description

Technical Field

[0001] The invention relates to the technical field of household electrical appliances, and in particular to a weighing mechanism and a kettle. Background Art

[0002] The automatic water-adding electric kettle is a smart appliance that integrates the functions of automatic water filling, water boiling, heat preservation, tea brewing, etc. It is suitable for various occasions such as home and office. In order to realize automatic water addition according to the amount of water in the kettle, a weighing component needs to be set on the bottom shell of the kettle. When the water level in the kettle reaches the set low value, water is automatically added, and when the water level reaches the set high value, water addition is automatically stopped.

[0003] However, the bottom shell of the kettle is also provided with components such as a water inlet pipe and a power cord. When the user moves the kettle, it is easy to pull the water inlet pipe and the power cord, which in turn causes the weighing component to shift, affecting the measurement accuracy of the weighing component and causing misjudgment of the water amount in the kettle, resulting in poor reliability. Summary of the invention

[0004] In view of this, the present invention provides a weighing mechanism and a kettle to solve the problems that the weighing components of the existing kettles are easily displaced, affecting the measurement accuracy and having poor reliability.

[0005] In a first aspect, the present invention provides a weighing mechanism, which is applied to a kettle, the kettle comprising a shell and a bottom plate, the bottom plate being arranged at the bottom of the shell, the weighing mechanism being used to weigh the weight of water in the shell, the weighing mechanism comprising:

[0006] A middle shell, disposed between the outer shell and the bottom plate, the middle shell being connected to the outer shell, and the middle shell supporting the outer shell;

[0007] A weighing detection assembly is disposed between the middle shell and the bottom plate, the weighing detection assembly comprising a first detection portion and a second detection portion that can be relatively deformed, one of the first detection portion and the second detection portion supports the middle shell, and the other is fixed to the bottom plate;

[0008] The limiting mechanism includes a first limiting mechanism, wherein the first limiting mechanism is used to limit the downward movement distance of the first detection part or the second detection part fixed to the bottom plate relative to the middle shell.

[0009] Beneficial effect: The weighing mechanism of the present invention comprises a middle shell, a weighing detection component and a limiting mechanism, wherein the limiting mechanism comprises a first limiting mechanism. By setting the first limiting mechanism, when the user moves the kettle to pull the water inlet pipe and the power cord, the first limiting mechanism can limit the downward movement distance of the first detection part or the second detection part of the weighing detection component relative to the middle shell, and the first detection part or the second detection part of the weighing detection component will not be displaced or deformed too much, so that the weighing detection component will not be damaged due to overload force, forming overload protection for the weighing detection component, ensuring the measurement accuracy of the weighing detection component, and thus improving the reliability of the weighing mechanism.

[0010] In an optional embodiment, the middle shell has at least two installation spaces, and the at least two installation spaces are evenly spaced around the circumference of the middle shell, and the weighing detection assembly is arranged in the installation space.

[0011] Beneficial effect: The weighing mechanism of the present invention has at least two installation spaces in the middle shell, and the installation spaces are evenly spaced around the circumference of the middle shell. The weighing detection components are arranged in the installation spaces, that is, the weighing detection components are evenly spaced around the circumference of the middle shell. The volume of a single weighing detection component is small and will not take up too much setting space, which is conducive to the compact design of the weighing mechanism. In addition, the use of at least two weighing detection components in combination can ensure the measurement accuracy of the weighing mechanism and meet the use requirements.

[0012] In an optional embodiment, the weighing detection assembly also includes a bracket and a pressure plate, the top of the bracket is connected to the second detection part, the lower part of the bracket is fixed to the bottom plate, the pressure plate is sleeved on the outside of the bracket, the first detection part abuts between the middle shell and the top of the pressure plate, and the middle shell supports the pressure plate.

[0013] Beneficial effects: The weighing mechanism of the present invention has a relatively simple structure of a weighing detection component, which is easy to set up and install, can ensure the installation stability of the first detection part and the second detection part, and the overall weighing detection component is small in size, which can reduce manufacturing costs.

[0014] In an optional embodiment, the middle shell supports the pressure plate through a clamping mechanism.

[0015] Beneficial effects: In the weighing mechanism of the present invention, the middle shell supports the pressure plate through the clamping mechanism, so that the first detection part can reliably abut between the middle shell and the top of the pressure plate, thereby improving the stability of the structure.

[0016] In an optional embodiment, the clamping mechanism includes a first clamp and a second clamp that are clamped to each other, the first clamp is arranged on the outer wall of the pressure plate, and the second clamp is arranged on the inner wall of the installation space.

[0017] Beneficial effects: The weighing mechanism of the present invention and the above-mentioned clamping mechanism have a relatively simple structure and are easy to manufacture, which is beneficial to reducing the manufacturing cost of the product.

[0018] In an optional embodiment, the upper portion of the bracket has an outwardly protruding mounting platform, the first limiting mechanism includes a limiting plate, the limiting plate is arranged in the pressure plate, and the mounting platform is placed on the limiting plate, and the bracket is limited when the bottom surface of the mounting platform abuts against the limiting plate.

[0019] Beneficial effect: The weighing mechanism of the present invention, the first limiting mechanism specifically includes a limiting plate, and the mounting platform is placed on the limiting plate. When the user moves the kettle to pull the water inlet pipe and the power cord, even if the weighing detection component is subjected to a large downward pulling force, driving the bracket to move downward, the limiting plate will prevent the bracket from moving downward too far. When the bottom surface of the mounting platform abuts against the limiting plate, the bracket is limited, that is, the first detection part or the second detection part is limited, the weighing detection component will not produce excessive deformation and will not exceed its range, forming a first overload protection for the weighing detection component, thereby ensuring the measurement accuracy of the weighing detection component.

[0020] In an optional implementation, a first gap D1 is provided between the bottom surface of the mounting platform and the limiting plate.

[0021] Beneficial effects: The weighing mechanism of the present invention has a first gap D1 between the bottom surface of the mounting platform and the limiting plate, so as to facilitate installation, avoid the situation where installation cannot be performed due to machining tolerances of multiple components, and reduce the difficulty of assembly.

[0022] In an optional implementation, a mounting groove is provided on the top of the mounting platform, and the second detection part is embedded in and fixed in the mounting groove.

[0023] Beneficial effects: In the weighing mechanism of the present invention, the second detection part is embedded in and fixed in the installation groove on the top of the installation platform, which can ensure the stability of the position of the second detection part and improve the structural reliability and detection accuracy of the weighing detection component.

[0024] In an optional embodiment, the limiting mechanism further includes a second limiting mechanism, and the second limiting mechanism is used to limit the downward movement distance of the middle shell.

[0025] Beneficial effect: The weighing mechanism of the present invention, the limiting mechanism also includes a second limiting mechanism, the second limiting mechanism is used to limit the distance that the middle shell moves downward, and then limit the distance that the first detection part or the second detection part supporting the middle shell moves downward with the middle shell. The first detection part or the second detection part will not be displaced too much or deformed too much, so that the weighing detection component will not be damaged due to overload force, forming overload protection for the weighing detection component, ensuring the measurement accuracy of the weighing detection component, and thus improving the reliability of the weighing mechanism.

[0026] In an optional embodiment, the second limiting mechanism includes a top wall of the installation space, and the middle shell is limited when the top wall abuts against the first detection part or the second detection part connected to the bottom plate.

[0027] Beneficial effect: According to the weighing mechanism of the present invention, when too much water is put into the kettle, the middle shell will move downward a large distance, and the top wall of the installation space can prevent the first detection part or the second detection part supporting the middle shell from moving downward too far and deforming too much with the middle shell, thereby forming a second overload protection for the weighing detection component, thereby ensuring the measurement accuracy of the weighing detection component.

[0028] In an optional implementation, a second gap D2 is provided between the top surface of the first detection portion or the second detection portion and the top wall.

[0029] Beneficial effect: The weighing mechanism of the present invention has a second gap D2 between the top surface of the first detection part or the second detection part and the top wall of the installation space, so that the first detection part or the second detection part has a certain space to move downward, and deformation occurs within the measuring range of the weighing sensor, thereby realizing the weighing detection process.

[0030] In a second aspect, the present invention further provides a kettle, comprising an outer shell, a bottom plate and the weighing mechanism as described above, wherein the bottom plate is arranged at the bottom of the outer shell, and the weighing mechanism is used to weigh the weight of water in the outer shell.

[0031] Because the kettle of the present invention, including the weighing mechanism of the present invention, has the same beneficial effects as the weighing mechanism, it will not be described in detail here.

[0032] In an optional embodiment, the side wall of the base plate is provided with a water pipe mounting portion and a power cord mounting portion, the water inlet pipe of the kettle is fixed to the water pipe mounting portion, and the power cord of the kettle is fixed to the power cord mounting portion.

[0033] Beneficial effect: The side wall of the bottom plate of the kettle of the present invention is provided with a water pipe installation part and a power cord installation part, thereby separating the water inlet pipe and the power cord of the kettle from the weighing mechanism, so as to reduce the influence of pulling the water inlet pipe and the power cord on the weighing mechanism, and further ensure the detection accuracy of the weighing mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 is an overall cross-sectional view of the kettle of the present invention;

[0036] Figure 2 for Figure 1 A magnified view of part A;

[0037] Figure 3 It is a partial enlarged view of the weighing mechanism of the present invention;

[0038] Figure 4 It is a schematic diagram of the middle shell (partial structure) of the weighing mechanism of the present invention;

[0039] Figure 5 It is a schematic diagram of a weighing detection component in the weighing mechanism of the present invention;

[0040] Figure 6 is a cross-sectional view of a bracket in the weighing mechanism of the present invention;

[0041] Figure 7 It is a cross-sectional view of a pressure plate in the weighing mechanism of the present invention;

[0042] Figure 8 The local structure of the bottom plate of the kettle of the present invention Figure 1 ;

[0043] Fig. 9 The local structure of the bottom plate of the kettle of the present invention Figure 2 .

[0044] Description of reference numerals:

[0045] 1. Shell;

[0046] 2. Bottom plate; 201. Water pipe installation part; 202. Power line installation part; 203. Support column; 204. Bottom plate assembly hole;

[0047] 3. Middle shell; 301. Installation space; 302. Top wall; 303. Matching surface; 304. Matching hole; 305. Support platform;

[0048] 401, first detection part; 402, second detection part; 4021, main body; 4022, connection part; 403, third mounting hole;

[0049] 5. Bracket; 501. Mounting platform; 502. Mounting slot; 503. First mounting hole; 504. Second mounting hole; 505. Supporting part;

[0050] 6. Pressing plate; 601. Limiting plate; 602. Through hole; 603. Abutting surface;

[0051] 701, first buckle; 702, second buckle;

[0052] 8. First screw;

[0053] 9. Second screw. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0055] Combine the following Figure 1-Figure 9 , describing embodiments of the weighing mechanism and kettle of the present invention.

[0056] According to an embodiment of the present invention, a weighing mechanism is provided, which is applied to a kettle. The kettle comprises an outer shell 1 and a bottom plate 2, wherein the bottom plate 2 is arranged at the bottom of the outer shell 1, and the weighing mechanism is used to weigh the weight of water in the outer shell 1. The weighing mechanism comprises a middle shell 3, a weighing detection component and a limiting mechanism. The middle shell 3 is arranged between the outer shell 1 and the bottom plate 2, the middle shell 3 is connected to the outer shell 1, and the middle shell 3 supports the outer shell 1. The weighing detection component is arranged between the middle shell 3 and the bottom plate 2, and the weighing detection component comprises a first detection part 401 and a second detection part 402 which can be deformed relative to each other, one of the first detection part 401 and the second detection part 402 supports the middle shell 3, and the other is fixed to the bottom plate 2, and the limiting mechanism comprises a first limiting mechanism, and the first limiting mechanism is used to limit the downward movement distance of the first detection part 401 or the second detection part 402 fixed to the bottom plate 2 relative to the middle shell 3.

[0057] This weighing mechanism is provided with a first limiting mechanism. When the user moves the kettle to pull the water inlet pipe and the power cord, the first limiting mechanism can limit the downward movement distance of the first detection part 401 or the second detection part 402 of the weighing detection component relative to the middle shell 3. The first detection part 401 or the second detection part 402 of the weighing detection component will not be displaced or deformed too much, so that the weighing detection component will not be damaged due to overload force, forming overload protection for the weighing detection component, ensuring the measurement accuracy of the weighing detection component, and thus improving the reliability of the weighing mechanism.

[0058] The weighing mechanism of this embodiment is applied to a kettle, specifically an electric kettle, which has the functions of automatic water supply, water boiling, heat preservation, tea brewing, etc. The kettle comprises a shell 1 and a bottom plate 2. The shell 1 is the bearing structure of the kettle, has a certain structural strength, and can support other structural components. The shell 1 has a water storage space inside. Specifically, an inner liner is usually arranged inside the shell 1. The inner liner has a certain volume and can hold water. The bottom plate 2 is arranged at the bottom of the shell 1, and the bottom of the bottom plate 2 is suitable for being placed on a platform such as a desktop.

[0059] The weighing mechanism is used to weigh the weight of the water in the shell. When the water volume in the kettle reaches a set low value, water is automatically added. When the water volume reaches a set high value, water addition is automatically stopped.

[0060] The weighing mechanism includes a middle shell 3, a weighing detection component and a limit mechanism. The middle shell 3 is connected to the outer shell 1, and the middle shell 3 supports the outer shell 1, that is, the middle shell 3 carries the outer shell 1, so that the entire weight of the outer shell 1 (including the weight of the water in the outer shell 1) acts on the middle shell 3, so as to facilitate subsequent weighing detection.

[0061] like Figure 1-Figure 2 As shown, in this embodiment, most of the structure of the middle shell 3 is arranged inside the outer shell 1, and a support platform 305 is provided at the lower edge of the middle shell 3, the support platform 305 horizontally extends outward from the outer wall of the middle shell 3, and the bottom edge of the outer shell 1 abuts against the upper surface of the support platform 305, so that the weight of the entire outer shell 1 acts on the middle shell 3. In addition, in order to improve the reliability of the structure, the outer shell 1 is also fixed to the middle shell 3, such as by bolts. The bottom plate 2 is arranged at the bottom of the outer shell 1, and most of the structure of the bottom plate 2 is placed inside the outer shell 1, and the middle shell 3 is arranged between the outer shell 1 and the bottom plate 2, so that the appearance of the kettle is more concise and beautiful.

[0062] The weighing detection component is disposed between the middle shell 3 and the bottom plate 2 , and includes a first detection portion 401 and a second detection portion 402 that can be relatively deformed.

[0063] The first detection part 401 and the second detection part 402 together constitute a weighing sensor, which is a device that converts a mass signal into a measurable electrical signal output. Its working process is based on the resistance strain principle, that is, when the elastic body is deformed under the action of an external force, the resistance strain gauge attached to its surface will also be deformed, resulting in a change in resistance value, and then the resistance change is converted into an electrical signal output through a measuring circuit. This weighing sensor has a certain range, and it is necessary to ensure that the force applied to the first detection part 401 or the second detection part 402 does not cause the deformation of the weighing sensor to exceed its range in order to ensure the detection accuracy and service life of the weighing sensor.

[0064] One of the first detection part 401 and the second detection part 402 supports the middle shell 3, and the other is fixed to the bottom plate 2. Since the middle shell 3 supports the outer shell 1 upward, as the amount of water in the outer shell 1 changes, the middle shell 3 will be displaced in the vertical direction, and the first detection part 401 or the second detection part 402 supporting the middle shell 3 will move synchronously with the middle shell 3, while the bottom plate 2 is placed on the platform, and the first detection part 401 or the second detection part 402 fixed to the bottom plate 2 is stationary, so that relative deformation occurs between the first detection part 401 and the second detection part 402, thereby realizing the detection of the amount of water in the outer shell 1.

[0065] In this embodiment, the first detection portion 401 supports the middle shell 3 and can move along the vertical direction with the middle shell 3 , and the second detection portion 402 is fixed to the bottom plate 2 .

[0066] In other embodiments, according to the difference of the weighing detection components or the adjustment of the setting position, the second detection part 402 can also support the middle shell 3, and the first detection part 401 can be fixed to the bottom plate 2.

[0067] like Figure 5 As shown, the weighing detection assembly of this embodiment includes a first detection part 401 and a second detection part 402, the first detection part 401 is an annular structure (non-circular), and the second detection part 402 is arranged on the inner side of the first detection part 401, so that the first detection part 401 is arranged around the second detection part 402. The second detection part 402 includes a main body 4021 and a connecting part 4022, the inner wall of the first detection part 401 is connected to the main body 4021 of the second detection part 402 through the connecting part 4022, and the main body 4021 extends from the connecting part 4022 to both sides. The connecting part 4022 is used to realize the connection between the first detection part 401 and the main body 4021, and the connecting part 4022 can be deformed relative to the first detection part 401 with the main body 4021. A third mounting hole 403 is formed on the second detection part 402 to facilitate subsequent assembly.

[0068] The limiting mechanism includes a first limiting mechanism, and the first limiting mechanism is used to limit the distance that the first detection part 401 or the second detection part 402 fixed to the bottom plate 2 moves downward relative to the middle shell 3. In this embodiment, the second detection part 402 is fixed to the bottom plate 2, so the first limiting mechanism is used to limit the distance that the second detection part 402 moves downward relative to the middle shell 3.

[0069] Since the bottom plate 2 is provided with structures such as a water inlet pipe and a power cord, when the user moves the kettle, it is easy to accidentally pull the water inlet pipe and the power cord, causing the bottom plate 2 to be subjected to a large downward pulling force, and the second detection part 402 is fixed to the bottom plate 2, and the second detection part 402 is also subjected to the downward pulling force, which is easy to cause the first detection part 401 and the second detection part 402 to be relatively deformed too much, exceeding the range of the weighing sensor, and causing the weighing detection component to be overloaded and damaged. In this embodiment, the first detection part 401 supports the middle shell 3, and the first limit mechanism is provided to prevent the second detection part 402 from moving downward too far relative to the middle shell 3 (first detection part 401) and causing excessive deformation, thereby preventing the weighing detection component from being overloaded and damaged.

[0070] Furthermore, the middle shell 3 has at least two installation spaces 301 , and the at least two installation spaces 301 are evenly spaced around the circumference of the middle shell 3 , and the weighing detection assembly is arranged in the installation space 301 .

[0071] like Figure 1 and Figure 4 As shown, the installation space 301 is arranged close to the side wall of the housing 1, and the volume of a single weighing and detection component is small, and it will not take up too much installation space, which is conducive to the compact design of the weighing mechanism, and at least two weighing and detection components are used in combination to ensure the measurement accuracy of the weighing mechanism and meet the use requirements.

[0072] The middle shell 3 has at least two installation spaces 301. In this embodiment, the middle shell 3 has four installation spaces 301. A weighing detection component is arranged in each installation space 301. The four installation spaces 301 are evenly spaced around the circumference of the middle shell 3 to ensure the detection accuracy. In addition, in order to further improve the weighing accuracy, in this embodiment, the four installation spaces 301 are symmetrically arranged in pairs. Figure 4 As shown, the top wall 302 of the installation space 301 protrudes upward from the middle shell 3, and a matching hole 304 is formed on the top wall 302 to facilitate matching installation with the weighing sensor. Specifically, two matching holes 304 are provided, and the positions of the two matching holes 304 match the position of the third installation hole 403 to accommodate or avoid the fastener.

[0073] In other embodiments, the middle shell 3 may also be provided with two, three, five, etc. installation spaces 301, and the number of weighing and detection components provided may be less than or equal to the number of installation spaces 301 to improve the flexibility of mechanism setting.

[0074] Furthermore, the weighing detection assembly also includes a bracket 5 and a pressure plate 6, the top of the bracket 5 is connected to the second detection part 402, the lower part of the bracket 5 is fixed to the bottom plate 2, the pressure plate 6 is sleeved on the outside of the bracket 5, the first detection part 401 is abutted between the middle shell 3 and the top of the pressure plate 6, and the middle shell 3 supports the pressure plate 6.

[0075] The bracket 5 is disposed in the installation space 301 , the top of the bracket 5 is connected to the second detection part 402 , and the bottom of the bracket 5 is fixed to the bottom plate 2 , that is, the second detection part 402 is fixed to the bottom plate 2 through the bracket 5 .

[0076] like Figure 2 , Figure 3 and Figure 6 As shown, the upper part of the bracket 5 has a mounting platform 501, and the mounting platform 501 protrudes outward, so that the cross-sectional shape of the bracket 5 along the axial direction is similar to a T-shape. The lower part of the bracket 5 is a support part 505, and the second detection part 402 is arranged on the top of the mounting platform 501. The support part 505 is formed with a second mounting hole 504, and the opening of the second mounting hole 504 faces downward. Correspondingly, the bottom plate 2 has a bottom plate assembly hole 204 corresponding to the second mounting hole 504. The lower part of the bracket 5 can be fixed to the bottom plate 2 by the cooperation of the fastener with the bottom plate assembly hole 204 and the second mounting hole 504. In this embodiment, the fastener is a first screw 8. In order to improve the connection stability, the bottom of the support part 505 is attached to and abuts against the bottom plate 2.

[0077] The pressing plate 6 is also arranged in the installation space 301. Since the first detection part 401 is arranged around the second detection part 402, the pressing plate 6 is sleeved on the outside of the bracket 5 for structural coordination. The first detection part 401 abuts between the middle shell 3 and the top of the pressing plate 6. The middle shell 3 supports the pressing plate 6, so that the first detection part 401 and the pressing plate 6 move along the vertical direction with the middle shell 3. Through the above arrangement, the outer shell 1, the middle shell 3, the first detection part 401 and the pressing plate 6 together form a floating structure that can move along the vertical direction, that is, the outer shell 1, the middle shell 3, the first detection part 401 and the pressing plate 6 are floatingly arranged on the bottom plate 2 to realize the weighing detection process.

[0078] like Figure 4 and Figure 7 As shown, a mating surface 303 is provided on the inner wall of the installation space 301 and near the top wall 302, the structural form of the pressure plate 6 matches the bracket 5, and the top of the pressure plate 6 has a contact surface 603, which abuts against the lower surface of the first detection part 401, and the upper surface of the first detection part 401 abuts against the mating surface 303 of the middle shell 3, so that the first detection part 401 and the pressure plate 6 move along the vertical direction with the middle shell 3.

[0079] The pressure plate 6 has a limit plate 601 therein, which is horizontally arranged, and the lower part of the bracket 5 passes through the limit plate 601. Specifically, a through hole 602 is formed at the center of the limit plate 601, and the support part 505 of the bracket 5 can pass through the through hole 602 and then be fixedly connected with the bottom plate 2.

[0080] Furthermore, the middle shell 3 supports the pressing plate 6 through a clamping mechanism. The middle shell 3 supports the pressing plate 6 through the clamping mechanism, so that the first detection part 401 is reliably abutted between the middle shell 3 and the top of the pressing plate 6, thereby improving the stability of the structure.

[0081] In this embodiment, the snap-fit ​​mechanism includes a first snap-fit ​​701 and a second snap-fit ​​702 that are snap-fitted to each other. The first snap-fit ​​701 is disposed on the outer wall of the pressing plate 6 , and the second snap-fit ​​702 is disposed on the inner wall of the installation space 301 .

[0082] The middle shell 3 supports the pressure plate 6, so that the weight of the outer shell 1 and the middle shell 3 acts on the pressure plate 6, and because the first detection part 401 abuts between the middle shell 3 and the top of the pressure plate 6, the outer shell 1, the middle shell 3, the first detection part 401 and the pressure plate 6 together form a floating structure that can move in the vertical direction.

[0083] The middle shell 3 supports the pressure plate 6 through a snap-fit ​​mechanism, and the snap-fit ​​mechanism includes a first snap 701 and a second snap 702 that are snap-fitted to each other. In this embodiment, the first snap 701 is arranged on the outer wall of the pressure plate 6, and the second snap 702 is arranged on the inner wall of the installation space 301. The first snap 701 and the second snap 702 can be snap-fitted to achieve the middle shell 3 supporting the pressure plate 6 upward, so that the pressure plate 6 can stably abut the lower surface of the first detection part 401.

[0084] In other embodiments, according to different setting requirements, the snap-fit ​​mechanism may also include a snap and a slot. The snap is set on the outer wall of the pressure plate 6, and the slot is formed with the inner wall of the installation space 301. The snap and the slot are snapped together, which can also achieve the middle shell 3 supporting the pressure plate 6 upward.

[0085] Furthermore, a mounting groove 502 is provided on the top of the mounting platform 501 , and the second detection unit 402 is embedded in and fixed in the mounting groove 502 .

[0086] like Figure 2 , Figure 3 and Figure 6 As shown, a mounting groove 502 is provided on the top of the mounting platform 501, and the mounting groove 502 is recessed downward, and the second detection part 402 is embedded in and fixed to the mounting groove 502. Specifically, the shape and size of the mounting groove 502 match the shape and size of the second detection part 402. A first mounting hole 503 is provided at the bottom of the mounting groove 502, and the position of the first mounting hole 503 corresponds to the position of the third mounting hole 403. The second detection part 402 can be fixed to the mounting groove 502 by the cooperation of the fastener with the first mounting hole 503 and the third mounting hole 403. In this embodiment, the fastener is a second screw 9.

[0087] Furthermore, the first limiting mechanism includes a limiting plate 601 , which is disposed in the pressure plate 6 , and the mounting platform 501 is placed on the limiting plate 601 , and the bracket 5 is limited when the bottom surface of the mounting platform 501 abuts against the limiting plate 601 .

[0088] When the user moves the kettle and pulls the water inlet pipe and the power cord, even if the weighing detection assembly is subjected to a large downward pulling force, driving the bracket 5 to move downward, the limit plate 601 will prevent the bracket 5 from moving too far downward. When the bottom surface of the mounting platform 501 abuts against the limit plate 601, the bracket is limited, that is, the first detection part 401 or the second detection part 402 is limited, and the weighing detection assembly will not produce excessive deformation and will not exceed its range, forming the first level of overload protection for the weighing detection assembly, thereby ensuring the measurement accuracy of the weighing detection assembly. In this embodiment, when the bottom surface of the mounting platform 501 abuts against the limit plate 601, the bracket is limited, and the second detection part 402 is limited.

[0089] Furthermore, there is a first gap D1 between the bottom surface of the mounting platform 501 and the limiting plate 601 .

[0090] like Figure 3 As shown, during installation, the bottom surface of the mounting platform 501 and the limiting plate 601 are not in abutting contact, but there is a first gap D1 between the bottom surface of the mounting platform 501 and the limiting plate 601. By setting the first gap D1, a certain margin can be provided for the installation operation to avoid the situation where installation cannot be performed due to processing tolerances of multiple components, thereby reducing the difficulty of assembly.

[0091] In this embodiment, the value range of the first gap D1 is: 0<D1≤3mm. For example, the first gap D1 can be 0.2mm, 0.3mm, 0.5mm, 2mm, 3mm, etc.

[0092] Furthermore, the limiting mechanism further includes a second limiting mechanism, and the second limiting mechanism is used to limit the distance that the middle shell 3 moves downward.

[0093] The second limit mechanism is used to limit the distance that the middle shell 3 moves downward, thereby limiting the distance that the first detection part 401 or the second detection part 402 supporting the middle shell 3 moves downward with the middle shell 3, so that the first detection part 401 or the second detection part 402 will not be displaced too much or deformed too much, so that the weighing detection component will not be damaged due to overload force, forming overload protection for the weighing detection component, ensuring the measurement accuracy of the weighing detection component, and thus improving the reliability of the weighing mechanism. The first limit mechanism and the second limit mechanism together form a bidirectional overload protection for the weighing sensor.

[0094] Furthermore, the second limiting mechanism includes a top wall 302 of the installation space 301 , and the middle shell 3 is limited when the top wall 302 abuts against the first detection portion 401 or the second detection portion 402 connected to the bottom plate 2 .

[0095] When too much water is put into the kettle, the middle shell 3 will move downward a large distance, and the top wall 302 of the installation space 301 can prevent the first detection part 401 or the second detection part 402 supporting the middle shell 3 from moving downward too far and deforming too much with the middle shell 3, forming a second level of overload protection for the weighing detection component, thereby ensuring the measurement accuracy of the weighing detection component. In this embodiment, when the top wall 302 abuts against the second detection part 402, the middle shell 3 is limited, thereby preventing the first detection part 401 supporting the middle shell 3 from moving downward too far and deforming too much with the middle shell 3.

[0096] Furthermore, a second gap D2 is provided between the top surface of the first detection portion 401 or the second detection portion 402 and the top wall 302 .

[0097] like Figure 3 As shown, there is a second gap D2 between the top surface of the first detection part 401 or the second detection part 402 and the top wall 302, so that the first detection part 401 or the second detection part 402 has a certain space to move downward (having a deformation space), and through structural restrictions, the second gap D2 meets the range of the weighing sensor, and the first detection part 401 or the second detection part 402 is deformed within the range of the weighing sensor, thereby realizing the weighing detection process. In this embodiment, there is a second gap D2 between the top surface of the second detection part 402 and the top wall 302.

[0098] In this embodiment, the value range of the second gap D2 is 0<D2≤3mm. For example, the second gap D2 can be 0.1mm, 1.2mm, 2mm, 2.5mm, 3mm, etc.

[0099] This embodiment also provides a kettle, comprising a shell 1 , a bottom plate 2 and the weighing mechanism as described above, wherein the bottom plate 2 is arranged at the bottom of the shell 1 , and the weighing mechanism is used to weigh the weight of water in the shell 1 .

[0100] The weighing mechanism in this kettle can weigh the weight of the water in the outer shell 1, and when the user moves the kettle to pull the water inlet pipe and the power cord, the first limit mechanism can limit the downward movement distance of the first detection part 401 or the second detection part 402 of the weighing detection component relative to the middle shell 3, and the first detection part 401 or the second detection part 402 of the weighing detection component will not be displaced or deformed too much, so that the weighing detection component will not be damaged due to overload force, forming overload protection for the weighing detection component, ensuring the measurement accuracy of the weighing detection component, and thus improving the reliability of the weighing mechanism.

[0101] The shell 1 has a water storage space inside. Specifically, an inner liner is arranged inside the shell 1. The inner liner has a certain volume and can hold water. The bottom plate 2 is arranged at the bottom of the shell 1, and the bottom of the bottom plate 2 is suitable for being placed on a platform such as a desktop. In this embodiment, the kettle is specifically an electric kettle, which has the functions of automatic water supply, water boiling, heat preservation, tea making, etc. Of course, the kettle also has other structures and components that existing electric kettles have, such as a control system, a water pump, etc. The control system is electrically connected to the weighing sensor and the water pump, which will not be described in detail.

[0102] Furthermore, a water pipe installation portion 201 and a power cord installation portion 202 are provided on the side wall of the bottom plate 2 , the water inlet pipe of the kettle is fixed to the water pipe installation portion 201 , and the power cord of the kettle is fixed to the power cord installation portion 202 .

[0103] like Figure 8-Figure 9 As shown, the bottom plate 2 is a disc-shaped structure as a whole, and a support column 203 is provided near the side wall of the bottom plate 2. A bottom plate assembly hole 204 is provided in the support column 203, and the position of the bottom plate assembly hole 204 corresponds to the second mounting hole 504 to fix the bracket 5.

[0104] The side wall of the bottom plate 2 is provided with a water pipe mounting portion 201 and a power cord mounting portion 202, the water inlet pipe of the kettle is fixed to the water pipe mounting portion 201, and the power cord of the kettle is fixed to the power cord mounting portion 202. In this embodiment, the water pipe mounting portion 201 and the power cord mounting portion 202 are both fixed groove structures, the water inlet pipe is clamped in the water pipe mounting portion 201, and the power cord is clamped in the power cord mounting portion 202, so as to achieve the fixing of the water inlet pipe and the power cord.

[0105] Since the installation position of the water inlet pipe and the power cord of the kettle is far away from the weighing mechanism, or in other words, the fixed structure of the water inlet pipe and the power cord is separated from the setting of the weighing mechanism, that is, the water inlet pipe and the power cord are fixed to the bottom plate 2, and the middle shell 3, the first detection part 401 and the pressure plate 6 are floatingly arranged on the bottom plate 2 without affecting each other, thereby further reducing the influence of the external force pulling the water inlet pipe and the power cord on the weighing mechanism, thereby ensuring the detection accuracy of the weighing sensor.

[0106] When water is added to the kettle, the weight of the shell 1 increases and the deformation of the weighing sensor increases. When the water in the kettle becomes less, the deformation of the weighing sensor decreases. The control system can control the water pump to add water to the kettle or stop adding water according to the set value of the deformation of the weighing sensor.

[0107] The following describes the water adding and limiting process of the limiting mechanism of the kettle in this embodiment in conjunction with the accompanying drawings:

[0108] When the amount of water in the kettle is insufficient, under the control of the control system, when water is added into the kettle, the weight of the outer shell 1 increases, the middle shell 3, the first detection part 401 and the pressure plate 6 move downward together, the first detection part 401 is deformed relative to the second detection part 402, and the control system obtains the weight of the water in the outer shell 1 according to the deformation amount, and stops adding water when the water amount reaches a preset high value.

[0109] If too much water is added due to a control system failure or human error, theoretically the first detection portion 401 will be deformed too much relative to the second detection portion 402. However, when the top wall 302 abuts against the second detection portion 402 (specifically, the top wall 302 abuts against the connecting portion 4022), the middle shell 3 is limited to prevent the first detection portion 401 supporting the middle shell 3 from moving too far downward with the middle shell 3 and deforming too much, thereby forming an overload protection.

[0110] If the user pulls the water inlet pipe and the power cord when moving the kettle, the water inlet pipe and the power cord are fixed and separated from the setting position of the weighing mechanism, and it will not cause too much impact on the weighing mechanism. Even if the weighing detection component is subjected to a large downward pulling force, driving the bracket 5 to move downward, the limit plate 601 will prevent the bracket 5 from moving too far downward. When the bottom surface of the mounting platform 501 abuts against the limit plate 601, the bracket 5 is limited, and then the second detection part 402 is limited, forming an overload protection.

[0111] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A weighing mechanism, characterized in that: Applied to a kettle, the kettle comprises an outer shell (1) and a bottom plate (2), the bottom plate (2) being arranged at the bottom of the outer shell (1), the weighing mechanism being used for weighing the weight of water in the outer shell (1), the weighing mechanism comprising: A middle shell (3) is arranged between the outer shell (1) and the bottom plate (2), the middle shell (3) is connected to the outer shell (1), and the middle shell (3) supports the outer shell (1); a weighing detection component, arranged between the middle shell (3) and the bottom plate (2), the weighing detection component comprising a first detection portion (401) and a second detection portion (402) which are relatively deformable, one of the first detection portion (401) and the second detection portion (402) supporting the middle shell (3), and the other being fixed to the bottom plate (2); The limiting mechanism comprises a first limiting mechanism, wherein the first limiting mechanism is used to limit the distance that the first detection part (401) or the second detection part (402) fixed to the bottom plate (2) moves downward relative to the middle shell (3).

2. The weighing mechanism according to claim 1, characterized in that: The middle shell (3) has at least two installation spaces (301), and the at least two installation spaces (301) are evenly spaced around the middle shell (3) in an annular direction, and the weighing detection component is arranged in the installation space (301).

3. The weighing mechanism according to claim 2, characterized in that: The weighing detection assembly also includes a bracket (5) and a pressure plate (6), the top of the bracket (5) is connected to the second detection part (402), the lower part of the bracket (5) is fixed to the bottom plate (2), the pressure plate (6) is sleeved on the outside of the bracket (5), the first detection part (401) is abutted between the middle shell (3) and the top of the pressure plate (6), and the middle shell (3) supports the pressure plate (6).

4. The weighing mechanism according to claim 3, characterized in that: The middle shell (3) supports the pressing plate (6) via a clamping mechanism.

5. The weighing mechanism according to claim 4, characterized in that: The clamping mechanism comprises a first clamp (701) and a second clamp (702) which are clamped to each other, wherein the first clamp (701) is arranged on the outer wall of the pressing plate (6), and the second clamp (702) is arranged on the inner wall of the installation space (301).

6. The weighing mechanism according to claim 3, characterized in that: The upper portion of the bracket (5) has a mounting platform (501) protruding outward, the first limiting mechanism comprises a limiting plate (601), the limiting plate (601) is arranged in the pressure plate (6), and the mounting platform (501) is placed on the limiting plate (601), and the bracket (5) is limited when the bottom surface of the mounting platform (501) abuts against the limiting plate (601).

7. The weighing mechanism according to claim 6, characterized in that: A first gap D1 is provided between the bottom surface of the mounting platform (501) and the limiting plate (601).

8. The weighing mechanism according to claim 6, characterized in that: The top of the mounting platform (501) is provided with a mounting groove (502), and the second detection part (402) is embedded in and fixed in the mounting groove (502).

9. The weighing mechanism according to any one of claims 2 to 8, characterized in that: The limiting mechanism further comprises a second limiting mechanism, wherein the second limiting mechanism is used to limit the distance that the middle shell (3) moves downward.

10. The weighing mechanism according to claim 9, characterized in that: The second limiting mechanism comprises a top wall (302) of the installation space (301), and the middle shell (3) is limited when the top wall (302) abuts against the first detection part (401) or the second detection part (402) connected to the bottom plate (2).

11. The weighing mechanism according to claim 10, characterized in that: A second gap D2 is provided between the top surface of the first detection portion (401) or the second detection portion (402) and the top wall (302).

12. A kettle, characterized in that: It comprises a shell (1), a bottom plate (2) and a weighing mechanism as claimed in any one of claims 1 to 8, wherein the bottom plate (2) is arranged at the bottom of the shell (1), and the weighing mechanism is used to weigh the weight of water in the shell (1).

13. The kettle according to claim 12, characterized in that The side wall of the bottom plate (2) is provided with a water pipe installation portion (201) and a power cord installation portion (202); the water inlet pipe of the kettle is fixed to the water pipe installation portion (201), and the power cord of the kettle is fixed to the power cord installation portion (202).

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