Flow measuring device and water cup

Abstract

The utility model discloses a flow measuring device and a water cup. The flow measuring device comprises a shell, a rotor assembly and a first Hall switch. A cavity is formed in the shell, and the shell is provided with a water inlet and a water outlet which are communicated with the cavity; the rotor assembly is rotatably mounted in the cavity; liquid entering the cavity from the water inlet flows out from the water outlet after driving the rotor assembly to rotate, and the first Hall switch is used for sensing magnetic field changes generated when the rotor assembly rotates. According to the flow measuring device, through the combination of the first Hall switch and the rotor assembly, the flow measuring device can accurately measure the liquid flow, and accurate water drinking amount data can be calculated and provided for a user based on the flow.

Description

TECHNICAL FIELD

[0001] The utility model relates to water cup technical field especially, relate to a flow measuring device and water cup. BACKGROUND

[0002] Water, as a basic element of life, is crucial to human health. It not only transports nutrients in the body as a carrier, but also directly participates in the metabolic process of the human body. Therefore, ensuring that the human body obtains sufficient water intake is crucial for maintaining normal physiological functions.

[0003] However, in current daily life, most users only rely on thirst to determine whether they need to drink water, and do not accurately measure the daily water intake. At the same time, the existing water cup products on the market generally lack water intake detection function, which to some extent limits the effective monitoring and management of personal water intake by users. INVENTION CONTENT

[0004] The utility model aims at overcoming the insufficient of prior art, provides a flow measuring device to solve the technical problem that the existing water cup products generally lack water intake detection function, which to some extent limits the effective monitoring and management of personal water intake by users.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] The utility model embodiment provides a flow measuring device, which comprises a shell, a rotor assembly and a first Hall switch; the shell is provided with a cavity, the shell is provided with a water inlet and a water outlet which are communicated with the cavity; the rotor assembly is rotatably installed in the cavity; the liquid entering the cavity from the water inlet flows out from the water outlet after driving the rotor assembly to rotate, and the first Hall switch is used for sensing the magnetic field change generated when the rotor assembly rotates.

[0007] Further, the shell comprises an upper shell and a lower shell, the water outlet is opened in the upper shell, and the water inlet is opened in the lower shell;

[0008] A groove is arranged on one side of the upper shell facing the lower shell or one side of the lower shell facing the upper shell, the groove comprises a first area, a second area and a third area, the rotor assembly is rotatably arranged in the first area, the water inlet is communicated with the second area, and the water outlet is communicated with the third area;

[0009] The liquid entering from the water inlet first flows into the second area, then flows into the first area to drive the rotor assembly in the first area to rotate, and finally flows into the third area and flows out through the water outlet.

[0010] Further, the upper shell and the lower shell are detachably mounted, and when the upper shell and the lower shell are mounted in place, a projection of the water inlet towards the tank body is located in the second region, and a projection of the water outlet towards the tank body is located in the third region.

[0011] Further, the first region is provided with a first mounting portion, and the first side of the rotor assembly is provided with a second mounting portion which is adapted to be mounted with the first mounting portion.

[0012] When the first side of the rotor assembly is mounted towards the tank body, the first mounting portion is adapted to be mounted with the second mounting portion, and the rotor assembly is correctly mounted in the tank body.

[0013] Further, the second side of the rotor assembly is provided with a third mounting portion which is not adapted to be mounted with the first mounting portion.

[0014] When the second side of the rotor assembly is mounted towards the tank body, the third mounting portion is not adapted to be mounted with the first mounting portion, and the rotor assembly is incorrectly mounted.

[0015] Further, the first mounting portion comprises a positioning shaft and a foolproof part arranged around the positioning shaft, and the second mounting portion comprises an avoiding groove and a positioning hole penetrating through the avoiding groove.

[0016] When the first side of the rotor assembly is mounted towards the tank body, the positioning shaft is inserted into the positioning hole, the avoiding groove is adapted to be mounted with the positioning shaft and the foolproof part, and the rotor assembly is correctly mounted in the tank body.

[0017] Further, the first mounting portion comprises a positioning shaft and a foolproof part arranged around the positioning shaft, the second mounting portion comprises an avoiding groove and a positioning hole penetrating through the avoiding groove, and the third mounting portion comprises a second protrusion.

[0018] When the first side of the rotor assembly is mounted towards the tank body, the positioning shaft is inserted into the positioning hole, the avoiding groove is adapted to be mounted with the positioning shaft and the foolproof part, and the rotor assembly is correctly mounted in the tank body.

[0019] When the second side of the rotor assembly is mounted towards the tank body, the positioning shaft is inserted into the positioning hole, the second protrusion is not adapted to be mounted with the positioning shaft and the foolproof part, and the rotor assembly is incorrectly mounted.

[0020] Further, the rotor assembly comprises a rotor body, at least two first magnets arranged in the rotor body, and at least one blade extending outward from the outer periphery of the rotor body.

[0021] The blade is arranged to be bent in the rotation direction of the rotor body.

[0022] The utility model embodiment further provides a water cup, including flow measurement device as described above, still include:

[0023] The cup body includes a cup mouth and a containing cavity inside it;

[0024] The cup cover is arranged on the cup mouth;

[0025] The suction nozzle is arranged on the cup cover and is communicated with the containing cavity;

[0026] The water inlet of the flow measurement device is communicated with the containing cavity, and the water outlet of the flow measurement device is communicated with the suction nozzle;

[0027] The flow measurement device is used for measuring the flow of liquid flowing from the containing cavity to the suction nozzle.

[0028] Further, the water cup further includes a control mainboard;

[0029] The suction nozzle is rotatably arranged on the cup cover, the suction nozzle is provided with a second magnet, and the control mainboard is provided with a second hall switch electrically connected thereto;

[0030] The control mainboard is used for controlling the first hall switch of the flow measurement device to be powered on when the second magnet on the suction nozzle triggers the second hall switch.

[0031] The flow measurement device of the utility model, through the combination of the first hall switch and the rotor assembly, the flow measurement device can realize the accurate measurement of liquid flow, and can calculate the accurate drinking water data for the user based on the flow.

[0032] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, the content of the specification can be implemented, and in order to make the above and other purposes, characteristics and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are described in detail as follows. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is the front view of the flow measurement device of the utility model;

[0034] Figure 2 It is the explosion view of the flow measurement device of the utility model;

[0035] Figure 3 It is the sectional view of the flow measurement device of the utility model;

[0036] Figure 4 It is the first internal structure schematic view of the flow measurement device of the utility model;

[0037] Figure 5 It is second internal structure schematic view of flow measuring device of the utility model;

[0038] Figure 6 It is first side stereogram of rotor assembly in flow measuring device of the utility model;

[0039] Figure 7 It is sectional view of rotor assembly in flow measuring device of the utility model;

[0040] Figure 8 It is sectional view of upper shell in flow measuring device of the utility model;

[0041] Figure 9 It is sectional view when first side of rotor assembly in flow measuring device of the utility model is installed to the groove body;

[0042] Figure 10 It is sectional view when second side of rotor assembly in flow measuring device of the utility model is installed to the groove body;

[0043] Figure 11 It is explosion view of rotor assembly in flow measuring device of the utility model;

[0044] Figure 12 It is first stereogram of water cup of the utility model;

[0045] Figure 13 It is second stereogram of water cup of the utility model;

[0046] Figure 14 It is explosion view of water cup of the utility model;

[0047] Figure 15 It is Figure 14 Enlarged view of A portion in;

[0048] Figure 16 It is cup cover structure schematic view of water cup of the utility model;

[0049] Figure 17 It is cup cover explosion view of water cup of the utility model;

[0050] Figure 18 It is handle structure schematic view of water cup of the utility model;

[0051] Figure 19 It is structure schematic view of light assembly in water cup of the utility model;

[0052] Figure 20 It is explosion view of light assembly in water cup of the utility model;

[0053] Figure 21 It is sectional view of water cup of the utility model;

[0054] Figure 22 It is the first sectional view of cup cover in the utility model water cup;

[0055] Figure 23 It is Figure 22 It is the enlarged view of B part in the middle;

[0056] Figure 24 It is the second sectional view of cup cover in the utility model water cup.

[0057] Mark explanation:

[0058] 10, cup body;11, cavity;12, straw;13, base;14, silica gel cover;

[0059] 20, cup cover;21, suction nozzle;22, display device;221, light assembly;2211, lamp plate;2212, lamp bead;2213, light shield support;2214, light guide strip;222, display screen assembly;23, handle;231, bottom shell;2311, installation groove;23111, straight area;23112, curved area;232, cover plate;24, control mainboard;241, charging interface;25, sterilization device;26, second hall switch;27, second magnet;28, suction nozzle cover;29, battery;

[0060] 30, flow measuring device;31, shell;311, upper shell;3111, outer rib;3112, outer stopper;312, lower shell;3121, inner rib;313, water inlet;314, water outlet;32, groove body;321, first area;3211, first installation part;32111, foolproof part;32112, positioning shaft;322, second area;323, third area;33, rotor assembly;331, rotor main body;3311, opening installation groove;332, first magnet;333, blade;334, second installation part;3341, avoidance groove;3342, positioning hole;335, notch cover sheet;336, third installation part;34, first hall switch;35, first side;36, second side. Specific implementation

[0061] In order to make the purpose, technical scheme and advantage of the utility model more clear and obvious, the utility model is further explained in detail below by combining with the drawings and specific implementation.

[0062] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0063] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "resin", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are the orientation or positional relationship described based on the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0064] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0065] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be connected, or it can be detachable, or it can be integrated; it can be mechanical connection, or it can be electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication or interaction relationship between two elements. For the person skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0066] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0067] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0068] Please refer to the accompanying drawings Figures 1 to 3 , Figure 1 is a front view of the flow measuring device 30 of the present application, Figure 2 is an exploded view of the flow measuring device 30 of the present application, Figure 3 is a sectional view of the flow measuring device 30 of the present application. The embodiment of the present application provides a flow measuring device 30, comprising: a housing 31, a rotor assembly 33 and a first Hall switch 34, the housing 31 is provided with a cavity, the housing 31 is provided with a water inlet 313 and a water outlet 314 which are communicated with the cavity, the rotor assembly 33 is rotatably installed in the cavity, the liquid entering the cavity from the water inlet 313 flows out from the water outlet 314 after driving the rotor assembly 33 to rotate, and the first Hall switch 34 is used to sense the magnetic field change generated when the rotor assembly 33 rotates.

[0069] It needs to be explained that in some embodiments, the first Hall switch 34 can be selected to be installed on the housing 31, and in other embodiments, the first Hall switch 34 can also be selected to be installed on the device to which the flow measuring device 30 of the present embodiment is applied, however, no matter what kind of installation method is, it is necessary to ensure that the first Hall switch 34 is relatively fixed with the housing 31, so as to ensure that the first Hall switch 34 senses the magnetic field change generated when the rotor assembly 33 rotates in a relatively stable position.

[0070] It needs to be explained that the flow measuring device includes one of a capacitive sensor, a photoelectric sensor, a Hall sensor and a pressure sensor. Among them, the flow measuring device 30 proposed in the present embodiment includes a Hall sensor, which will be described in detail hereinafter, and will not be described here.

[0071] It can be understood that in actual application, the rotor assembly 33 in the embodiment needs to be installed on the flow path of the liquid path that needs to measure the flow, so that the liquid in the liquid path enters the cavity in the housing 31 through the water inlet 313, and then flows out of the water outlet 314 after driving the rotor assembly 33 to rotate by a certain angle in the cavity. In this process, the rotation of the rotor assembly 33 will produce a change in the magnetic field, and the first Hall switch 34 will sense this change in the magnetic field and generate an electrical signal corresponding to this change in the magnetic field. Therefore, the number of rotations of the rotor assembly 33 in a unit of time can be obtained by sensing the electrical signal generated by the first Hall switch 34, and the flow data of the liquid flowing through the rotor assembly 33 can be further calculated and analyzed. Specifically, the present application is designed based on the Hall effect and fluid dynamics. In the device, the first Hall switch 34 serves as a sensor for sensing the change in the magnetic field generated by the rotation of the rotor assembly 33. The rotor assembly 33 itself has magnetism or is connected with a substance having magnetism. When the rotor assembly 33 rotates, its magnetic field changes and is sensed by the first Hall switch 34. At the same time, in the device, the rotor assembly 33 can rotate under the action of the liquid flow, and the number of rotations is proportional to the flow of the liquid. Therefore, by measuring the number of rotations of the rotor assembly 33 in a unit of time, the flow data of the liquid can be indirectly obtained.

[0072] In some embodiments, the flow measurement device 30 in the embodiment is applied to a water cup to measure the amount of water drunk by the user when using the water cup to drink water, thereby solving the problem that the existing water cup products lack water drinking amount detection function, and enabling the user to more effectively monitor and manage the personal water drinking amount. In other embodiments, in addition to being applied to a water cup, the flow measurement device 30 in the embodiment can also be widely applied to other occasions that need to measure the flow of liquid, such as a water dispenser, a water purifier, a kettle, etc.

[0073] Further, please refer to Figure 4 and Figure 5 , Figure 4 is a first internal structure diagram of the flow measurement device 30 of the utility model, Figure 5The utility model discloses a second internal structure schematic drawing of flow measuring device 30. The shell 31 of this embodiment includes upper shell 311 and lower shell 312, and the water outlet 314 is arranged on the upper shell 311, and the water inlet 313 is arranged on the lower shell 312. A groove 32 is arranged on one side of the upper shell 311 facing the lower shell 312 or one side of the lower shell 312 facing the upper shell 311. The groove 32 includes a first area 321, a second area 322 and a third area 323. A rotor assembly 33 is rotatably arranged in the first area 321. The water inlet 313 is connected to the second area 322, and the water outlet 314 is connected to the third area 323. The liquid entering through the water inlet 313 first flows into the second area 322, then flows into the first area 321 to drive the rotor assembly 33 in the first area 321 to rotate, and finally flows into the third area 323 and flows out through the water outlet 314.

[0074] It can be understood that the groove 32 in the embodiment is used to form the above-mentioned cavity together with the upper shell 311 and the lower shell 312. It should be noted that when the upper shell 311 and the lower shell 312 are installed in place, the cavity formed by the groove 32, the upper shell 311 and the lower shell 312 is a sealed chamber with only two openings, the water inlet 313 and the water outlet 314. Further, the first area 321 is used to install the rotor assembly 33 and connect the second area 322 and the third area 323. The second area 322 is used to connect the water inlet 313 and guide the liquid entering through the water inlet 313 to the first area 321. The third area 323 is used to connect the water outlet 314 and guide the liquid flowing from the first area 321 to the water outlet 314. Through the above-mentioned first area 321, second area 322 and third area 323, the liquid entering the cavity through the water inlet 313 can flow along a preset trajectory and then flow out through the water outlet 314. The preset trajectory allows the liquid entering the cavity through the water inlet 313 to pass through the rotor assembly 33, so that the flow measurement result of the flow measuring device 30 of the embodiment is more accurate.

[0075] Further, the upper shell 311 and the lower shell 312 are detachably installed, and when the upper shell 311 and the lower shell 312 are installed in place, the projection of the water inlet 313 towards the tank 32 is located in the second area 322, and the projection of the water outlet 314 towards the tank 32 is located in the third area 323. It needs to be explained that the installation of the upper shell 311 and the lower shell 312 described herein refers to the state after the complete connection of the upper shell 311 and the lower shell 312 according to the preset connection mode, which means that only the complete connection of the upper shell 311 and the lower shell 312 according to the preset connection mode is required, and the projections of the water inlet 313 and the water outlet 314 towards the tank 32 will be located in the second area 322 and the third area 323, without the need for manually aligning the water inlet 313 with the second area 322 or the water outlet 314 with the third area 323 during the assembly of the upper shell 311 and the lower shell 312, thereby simplifying the assembly process of the flow measurement device 30 and improving the assembly efficiency and accuracy. Alternatively, the above-mentioned preset connection mode can be snap connection or threaded connection, i.e., the upper shell 311 and the lower shell 312 are snap connected or threaded connected.

[0076] In some embodiments, the upper shell 311 and the lower shell 312 are snap connected. Specifically, the outer circumferential side of the upper shell 311 is provided with a plurality of rotatable snap heads, and the lengths of the plurality of snap heads are different, so that the lowest points of the rotating distal ends on the rotating track are also different; the outer circumferential side of the lower shell 312 is provided with a plurality of snap grooves with different heights, and the snap grooves with different heights correspond to the snap heads with different lengths one by one. Therefore, when assembling the upper shell 311 and the lower shell 312, the upper shell 311 and the lower shell 312 are installed in place only when each snap joint is engaged in the corresponding snap groove, and at this time, the projections of the water inlet 313 on the lower shell 312 and the water outlet 314 on the upper shell 311 towards the tank 32 are located in the second area 322 and the third area 323.

[0077] In some embodiments, as Figure 2 and Figure 3As shown, the upper shell 311 is threadedly connected with the lower shell 312. Specifically, the outer periphery side of the upper shell 311 is provided with an outer rib 3111 in a spiral shape, the inner periphery side of the lower shell 312 is provided with an inner rib 3121 in a spiral shape, the outer rib 3111 and the outer periphery side of the upper shell 311 form an outer groove, the inner rib 3121 and the inner periphery side of the lower shell 312 form an inner groove; wherein the outer rib 3111 is rotatably fitted in the inner groove, the inner rib 3121 is rotatably fitted in the outer groove, the inner groove is provided with an inner stop block at the end relative to the rotation-in direction of the outer rib 3111, the inner stop block is used to limit the rotation-in distance of the outer rib 3111 into the inner groove, and / or the outer groove is provided with an outer stop block 3112 at the end relative to the rotation-in direction of the inner rib 3121, the outer stop block 3112 is used to limit the rotation-in distance of the inner rib 3121 into the outer groove. Therefore, when assembling the upper shell 311 and the lower shell 312, when the outer rib 3111 is rotated into the inner groove to abut against the inner stop block, and / or when the inner rib 3121 is rotated into the outer groove to abut against the outer stop block 3112, the upper shell 311 and the lower shell 312 are installed in place, at this time the projection of the water inlet 313 on the lower shell 312 and the water outlet 314 on the upper shell 311 towards the tank 32 is just located within the second area 322 and the third area 323.

[0078] Further, please refer to Figures 5 to 8 , Figure 6 is a first side view of the rotor assembly 33 in the flow measurement device 30 of the utility model, Figure 7 is a sectional view of the rotor assembly 33 in the flow measurement device 30 of the utility model, Figure 8 is a sectional view of the upper shell 311 in the flow measurement device 30 of the utility model. In order to ensure that the rotor assembly 33 in the flow measurement device 30 can be stably and correctly installed and effectively cooperate with the flowing liquid, thereby realizing accurate flow measurement, the following three embodiments are listed.

[0079] In the first embodiment, the first area 321 is provided with a first mounting portion 3211, and the first side of the rotor assembly 33 is provided with a second mounting portion 334 which is adaptively mounted with the first mounting portion 3211; when the first side 35 of the rotor assembly 33 is installed towards the tank 32, the first mounting portion 3211 is adaptively mounted with the second mounting portion 334, and the rotor assembly 33 is correctly installed in the tank 32. It needs to be explained that the rotor assembly also has a second side 36, and the second side 36 and the first side 35 are opposite sides of the rotor assembly 33.

[0080] In the first embodiment, further, the second side 36 of the rotor assembly 33 is provided with a third mounting portion 336 which cannot be adaptively mounted with the first mounting portion 3211; when the second side 36 of the rotor assembly 33 is installed towards the tank 32, the third mounting portion 336 cannot be adaptively mounted with the first mounting portion 3211, and the rotor assembly 33 is incorrectly installed.

[0081] It should be explained that the rotation direction of the rotor assembly 33 in the first area 321 is fixed, and therefore, the rotor assembly 33 needs to be installed in the first area 321 in a preset posture to ensure stable cooperation with the flowing liquid. For example, the rotor assembly 33 is required to have the first side surface 35 facing the groove body 32 during the design stage, and the rotor assembly 33 should have a function of being adapted only when the first side surface 35 faces the groove body 32 to prevent the user from installing it reversely, which leads to unstable operation or normal use of the flow measuring device 30. In the embodiment, through the cooperation relationship between the first mounting portion 3211 and the second mounting portion 334, when the first side surface 35 of the rotor assembly 33 faces the groove body 32, the second mounting portion 334 accommodates the first mounting portion 3211, achieving correct installation cooperation; when the second side surface 36 of the rotor assembly 33 faces the groove body 32 (i.e., installation is reversed), the first mounting portion 3211 abuts against the third mounting portion 336, preventing the rotor assembly 33 from continuing to be installed, and if the upper shell 311 and the lower shell 312 continue to be installed, they cannot be installed in place, thereby avoiding incorrect installation.

[0082] In the second embodiment, the first mounting portion 3211 includes a positioning shaft 32112 and a foolproof part 32111 arranged around the positioning shaft 32112, and the second mounting portion 334 includes an avoiding groove 3341 and a positioning hole 3342 penetrating through the avoiding groove 3341; when the first side surface 35 of the rotor assembly 33 faces the groove body 32, the positioning shaft 32112 is inserted into the positioning hole 3342, and the avoiding groove 3341 is adapted and installed with the positioning shaft 32112 and the foolproof part 32111, and the rotor assembly 33 is correctly installed in the groove body 32.

[0083] In the third embodiment, the first mounting portion 3211 includes a positioning shaft 32112 and a foolproof part 32111 arranged around the positioning shaft 32112; the second mounting portion 334 includes an avoiding groove 3341 and a positioning hole 3342 penetrating through the avoiding groove 3341; the third mounting portion 336 includes a second protrusion; when the first side surface 35 of the rotor assembly 33 faces the groove body 32, the positioning shaft 32112 is inserted into the positioning hole 3342, and the avoiding groove 3341 is adapted and installed with the positioning shaft 32112 and the foolproof part 32111, and the rotor assembly 33 is correctly installed in the groove body 32; when the second side surface 36 of the rotor assembly 33 faces the groove body 32, the positioning shaft 32112 is inserted into the positioning hole 3342, and the second protrusion cannot be adapted and installed with the positioning shaft 32112 and the foolproof part 32111, and the rotor assembly 33 is incorrectly installed.

[0084] It should be understood that, as shown in FIGS. 1-3, Figure 9 and Figure 10 , Figure 9The utility model discloses a sectional view of the first side 35 of the rotor assembly 33 of the flow measuring device 30 towards the groove body 32 installation, Figure 10 The utility model discloses a sectional view of the second side 36 of the rotor assembly 33 of the flow measuring device 30 towards the groove body 32 installation. In the embodiment, the cooperation of the positioning shaft 32112 and the positioning hole 3342 provides a rotation pair for the rotor assembly 33, so that the rotor assembly 33 can rotate stably in the first area 321. The foolproof part 32111 is arranged in the first area 321, and the avoiding groove 3341 is arranged on the first side 35 of the rotor assembly 33. When the first side 35 of the rotor assembly 33 is installed towards the groove body 32, the foolproof part 32111 can be smoothly accommodated in the avoiding groove 3341, the positioning shaft 32112 is also inserted into the positioning hole 3342, and the rotor assembly 33 is stably installed in the first area 321. When the second side 36 of the rotor assembly 33 is installed towards the groove body 32, although the positioning shaft 32112 can still be inserted into the positioning hole 3342, the foolproof part 32111 will resist the second protrusion, preventing the rotor assembly 33 from being continuously installed to the correct position. Specifically, the rotor assembly 33 will exceed the height H of the first area 321. If the upper shell 311 and the lower shell 312 are continuously installed, they will not be installed in place, preventing the user from installing the rotor assembly 33 incorrectly. At this time, the user should realize that the installation direction is incorrect, and adjust the installation posture of the rotor assembly 33.

[0085] Further, please refer to Figure 11 , Figure 11 The utility model discloses an explosion view of the rotor assembly 33 of the flow measuring device 30. In the embodiment, the rotor assembly 33 includes: a rotor body 331, at least two first magnets 332 arranged in the rotor body 331, and at least one blade 333 extending outward from the outer circumferential side of the rotor body 331.

[0086] In the present embodiment, the rotor body 331 serves as the main structure of the rotor assembly 33, and is responsible for supporting and fixing the first magnets 332 and the vanes 333. The first magnets 332 are used to generate magnetic fields and interact with the first Hall switch 34. The vanes 333 are used to capture the kinetic energy of the fluid flow and convert it into rotational kinetic energy of the rotor. Optionally, the number of first magnets 332 can be two, which are arranged diagonally with respect to the rotation center axis of the rotor body 331 and have opposite polarities. Optionally, the rotor body 331 is provided with four first magnets 332, which are uniformly arranged around the rotation center axis of the rotor body 331 and have alternating polarities, i.e., in an SNSN arrangement. Optionally, the rotor body 331 is provided with an open mounting slot 3311 for accommodating the first magnets 332, and a slot cover 335 is arranged at the slot opening of the open mounting slot 3311. Optionally, the rotor body 331 is provided with twelve vanes 333, which are uniformly arranged around the rotation center axis of the rotor body 331. It can be understood that when the liquid passes through the flow measurement device 30, the impact force of the liquid on the vanes 333 will cause the rotor assembly 33 to start rotating. As the rotor assembly 33 rotates, the first magnets 332 also rotate, and the magnetic fields generated by the first magnets 332 interact with the first Hall switch 34, which generates a corresponding electrical signal. The frequency of generation of this electrical signal is directly proportional to the rotational speed of the rotor, so that the flow data of the fluid and / or the drinking water data determined based on the flow data can be indirectly measured.

[0087] Specifically, the vanes 333 are arranged in a bent manner along the rotation direction of the rotor body 331. The present embodiment aims to reduce the resistance of the fluid on the vanes 333 and increase the ability of the vanes 333 to capture the kinetic energy of the fluid, thereby improving the rotation efficiency of the rotor assembly 33 and the accuracy of the flow measurement. The bending of the vanes 333 along the rotation direction of the rotor body 331 allows the fluid to change direction more smoothly when passing through the vanes 333, reducing the resistance caused by the sharp change in the direction of the fluid.

[0088] Optionally, the thickness of the vanes 333 in the rotation direction of the rotor body 331 is 0.5mm-0.7mm. Preferably, the thickness of the vanes 333 in the rotation direction of the rotor body 331 is 0.6mm.

[0089] Optionally, the distance from the distal end of the vanes 333 to the rotation center axis of the rotor body 331 is 7mm-9mm. Preferably, the distance from the distal end of the vanes 333 to the rotation center axis of the rotor body 331 is 8mm.

[0090] Optionally, the distance from the outer periphery of the rotor body 331 to the rotation center axis of the rotor body 331 is 4mm-6mm.

[0091] Please refer to Figures 12 to 15 , Figure 12 It is the first perspective view of the water cup of the utility model, Figure 13 It is the second perspective view of the water cup of the utility model, Figure 14 It is the explosion view of the water cup of the utility model, Figure 15 It is Figure 14 The enlarged view of part A. The utility model also provides a water cup, comprising the flow measuring device 30 as above, further comprising: a cup body 10, comprising a cup mouth and being internally provided with a containing cavity 11; a cup cover 20, being covered on the cup mouth; a suction nozzle 21, being arranged on the cup cover 20 and being communicated with the containing cavity 11; the water inlet 313 in the flow measuring device 30 being communicated with the containing cavity 11, and the water outlet 314 in the flow measuring device 30 being communicated with the suction nozzle 21; the flow measuring device 30 being used for measuring the flow of the liquid flowing out of the containing cavity 11 to the suction nozzle 21.

[0092] The water cup provided in the embodiment, when the user uses the suction nozzle 21 to suck water, the liquid in the containing cavity 11 in the cup body 10 will be sucked out by the user after passing through the flow measuring device 30 due to the suction force of the user, and the part of the liquid flowing through the flow measuring device 30 represents the drinking water amount of the user, and the flow measuring device 30 can obtain the drinking water amount of the user by measuring the flow data of the part of the liquid.

[0093] In some embodiments, the water cup in the embodiment further comprises a wireless connection module and an instruction execution module, the wireless connection module is used for connecting with an external smart device, the external smart device is installed with an APP used for controlling the water cup, the APP is used for receiving user instructions and issuing execution instructions to the water cup according to the user instructions; the instruction module is used for responding according to the execution instructions and feeding back the state information of the water cup to the APP for display. Thus, the water cup of the embodiment can transmit the measured drinking water amount data to the smart device, helping the user to better monitor and manage the personal drinking water amount.

[0094] Further, please refer to Figure 16 , Figure 16The water cup further comprises a display device 22, and the display device 22 is used for displaying flow data measured by the flow measuring device 30 and / or drinking water data determined based on the flow data. It needs to be explained that the flow data mentioned in the embodiment refers to the flow of the liquid flowing out of the cavity 11 to the suction nozzle 21, and the drinking water data mentioned in the embodiment refers to data for indicating the drinking water behavior of the user which can be obtained by further calculating the flow data, for example, the drinking water data in some embodiments can include the drinking water amount for indicating how much water the user drinks through the water cup; the drinking water data in some embodiments can also include the drinking water progress for indicating the completion of the user to the set drinking water amount target. It can be understood that the display device 22 can be set by human to display various drinking water data about the flow data, and the above is only a limited example.

[0095] It needs to be explained that the drinking water amount is the most direct drinking water data, which represents the actual liquid amount that the user drinks through the water cup, and the calculation method is to accumulate the flow data measured by the flow measuring device 30 in a period of time (such as in each drinking water process) to obtain the total drinking water amount, for example, if the flow measuring device 30 measures the flow of 100 milliliters in 1 minute, then the drinking water amount of the user in 1 minute is 100 milliliters. When the drinking water progress is used to indicate the completion of the user to the set drinking water amount target, a target drinking water amount (such as 2000 milliliters per day) needs to be set first, and then the amount of water that has been drunk (that is, the drinking water amount) is calculated in real time or periodically, the amount of water that has been drunk is divided by the target drinking water amount, and then multiplied by 100%, to obtain the percentage of the drinking water progress, for example, if the target drinking water amount is 2000 milliliters, and the current amount of water that has been drunk is 1000 milliliters, then the drinking water progress is 50%.

[0096] Optionally, the display device 22 can be arranged on the cup cover 20 and / or the cup body 10. Optionally, the cup cover 20 is provided with a handle 23, and the display device 22 is arranged on the handle 23. Optionally, the cup body 10 is provided with a base 13, and the display device 22 is arranged on the base 13.

[0097] Preferably, as shown in Figures 16 to 18 , Figure 17 It is an explosion view of the cup cover 20 of the water cup of the utility model, Figure 18The utility model discloses a handle 23 structure schematic view of water cup. In this embodiment, the display device 22 is arranged on the handle 23 of the cup cover 20. It can be understood that the display device 22 is arranged on the handle 23 of the cup cover 20, which not only avoids the conflict with the position of the suction nozzle 21, but also makes full use of the idle space of the handle 23. This layout reduces the increase of the overall size of the water cup and improves the volume utilization rate of the water cup. When holding the water cup, the user can naturally see the data on the display device 22 of the handle 23, so as to know the water consumption.

[0098] In some embodiments, the handle 23 is in a "U" shape connected to the cup cover 20 at both ends, which is more in line with the natural bending shape of the human hand, so that the user can more easily share the hand pressure and reduce hand fatigue when holding the water cup. Alternatively, the handle 23 in other embodiments can also be in a "concave" shape or directly in a strip shape.

[0099] Specifically, the handle 23 includes a bottom shell 231 and a cover plate 232, the bottom shell 231 is provided with a mounting groove 2311, the display device 22 is mounted in the mounting groove 2311, and the cover plate 232 covers the mounting groove 2311. Preferably, the handle 23 is in a "U" shape connected to the cup cover 20 at both ends, and the mounting groove 2311 is also in a "U" shape. It can be understood that the handle 23 is designed as a modular structure composed of the bottom shell 231 and the cover plate 232, which facilitates the installation and maintenance of the display device 22. The mounting groove 2311 on the bottom shell 231 provides a special mounting space for the display device 22, and the cover plate 232 is used to close the mounting groove 2311 and protect the display device 22 from the interference of the external environment. Further, the mounting groove 2311 matches the "U" shape of the handle 23, which not only enhances the structural stability of the handle 23, but also makes the installation of the display device 22 in the handle 23 more secure and less likely to be loose or damaged. Preferably, the cover plate 232 is made of transparent material, which allows light to pass through. The cover plate 232 made of transparent material can allow the user to directly observe the display content of the display device 22.

[0100] In some embodiments, please refer to Figures 17 to 20 , Figure 19 The utility model discloses a structure schematic view of light assembly 221 in water cup, Figure 20The explosion map of the light assembly 221 in the cup. The display device 22 comprises a light assembly 221, the light assembly 221 comprises a lamp plate 2211 and a plurality of lamp beads 2212 arranged on the lamp plate 2211, the lamp plate 2211 is arranged in the mounting groove 2311, the plurality of lamp beads 2212 are arranged at intervals on the lamp plate 2211, the lamp plate 2211 is electrically connected to the control mainboard 24, and the control mainboard 24 is used for controlling the light assembly 221 to form different visual lights through the lamp beads 2212 to indicate flow data and / or drinking water information determined based on the flow data. It can be understood that the light assembly 221 is used for forming different visual lights to indicate flow data and / or drinking water information determined based on the flow data, wherein the different visual lights formed by the light assembly 221 can be a light progress bar formed by controlling light on / off, used for indicating the completion of the user distance setting drinking water amount target. Alternatively, the different visual lights formed by the light assembly 221 can also be a light prompt formed by controlling light color, used for indicating whether the user drinking water amount meets the standard.

[0101] Optionally, the light assembly 221 forms different visual lights through the on / off of the lamp beads 2212 to indicate the drinking water information determined based on the flow data, specifically, the drinking water information in the embodiment refers to the completion of the user distance setting drinking water amount target. For example, the lamp plate 2211 is provided with ten lamp beads 2212 placed at equal intervals, and the ten lamp beads 2212 represent the user's set drinking water amount target, if one of the ten lamp beads 2212 is on and the other nine are off, it means that the user has completed one tenth of the set drinking water amount target, if two of the ten lamp beads 2212 are on and the other eight are off, it means that the user has completed two tenths of the set drinking water amount target, and so on.

[0102] Optionally, the light assembly 221 forms different visual lights through the light emitting color of the lamp beads 2212 to indicate the drinking water information determined based on the flow data, specifically, the drinking water information in the embodiment refers to the completion of the user distance setting single drinking water amount target. For example, the user's single drinking water amount target is set to 100ML-200ML, if the light assembly 221 emits red light, it means that the user's current drinking water amount is less than 100ML or more than 200ML, if the light assembly 221 emits green light, it means that the user's current drinking water amount is 100ML-200ML. Preferably, the light assembly 221 can also indicate the user's drinking water information by controlling the light flashing frequency, for example, when the user's current drinking water amount is less than 100ML, the light assembly 221 emits slowly flashing red light, when the user's current drinking water amount is greater than 200ML, the light assembly 221 emits rapidly flashing red light. Optionally, the difference between slow flashing and rapid flashing is the flashing frequency of the light, optionally, the slow flashing can be 55 to 65 times per minute, and optionally, the rapid flashing can be 80 to 120 times per minute.

[0103] Further, as Figure 22 and Figure 23 shown, Figure 22 is a first sectional view of the cup cover 20 in the cup of the utility model, Figure 23 is Figure 22 an enlarged view of part B. In this embodiment, the light assembly 221 further comprises a light shielding support 2213 and a light guide strip 2214, the light shielding support 2213 is provided with opposite first and second openings, the first opening of the light shielding support 2213 is covered on the outer circumferential edge of the lamp panel 2211, and the light guide strip 2214 is covered on the second opening of the light shielding support 2213. In this embodiment, the first opening of the light shielding support 2213 is covered on the outer circumferential edge of the lamp panel 2211, for limiting direct leakage of light, avoiding glare or light pollution, and the second opening allows light to diffuse and distribute through the light guide strip 2214, the light guide strip 2214 can guide light to propagate along a predetermined path, thereby realizing uniform distribution and soft effect of light. Optionally, the light shielding support 2213 is connected with the lamp panel 2211 through a fixing structure (such as a screw, a buckle, etc.), ensuring overall stability of the light assembly 221, and the light guide strip 2214 is connected with the light shielding support 2213 through a suitable fixing mode (such as adhesive, a buckle, etc.), preventing loosening or falling off in use.

[0104] In some embodiments, as Figure 17 shown, the display device 22 comprises a display screen assembly 222, a screen of the display screen assembly 222 faces the cover plate 232, the display screen assembly 222 is electrically connected to the control mainboard 24, and the control mainboard 24 is used for controlling the display screen assembly 222 to display flow data and / or drinking water data determined based on the flow data through the screen. Optionally, the display screen assembly 222 can be a digital display screen or a liquid crystal display screen. Preferably, the control mainboard 24 is used for controlling the display screen assembly 222 to display the drinking water data determined based on the flow data through the screen. Specifically, the drinking water data in this embodiment refers to the amount of water drunk by the user, for example, if the user drinks 100ML of water using the cup, then the screen of the display screen assembly 222 displays the word “100ML”. It should be explained that the display screen assembly 222, especially the liquid crystal display screen or the digital display screen, generally has a certain rigidity and is not easy to bend, and if it is attempted to bend it to adapt to the curved area 23112 of the installation groove 2311, technical challenges may be faced, such as screen damage, uneven display, etc.; at the same time, the manufacturing process of the curved display screen is relatively complex, requiring high-precision processing and assembly technology, which will increase production difficulty and manufacturing cost, based on which, in this embodiment, the display screen assembly 222 is arranged in the straight area 23111, reducing production difficulty and cost and avoiding display problems or user operation inconvenience caused by bending.

[0105] In some embodiments, the display device 22 comprises both the light assembly 221 and the display screen assembly 222, the mounting groove 2311 comprises a straight area 23111 and a curved area 23112, the display screen assembly 222 is arranged in the straight area 23111 and electrically connected to the control mainboard 24, and the light assembly 221 is arranged in the curved area 23112 and / or the straight area 23111 not covered by the display screen assembly 222 and electrically connected to the control mainboard 24. In this embodiment, in combination with the display screen assembly 222 and the light assembly 221, more abundant water drinking reminders and state indications can be provided, the display screen assembly 222 presents the water drinking data in the form of numbers and graphics, so that the information is more intuitive and easy to understand, and the flickering or color change of the light assembly 221 can also provide intuitive visual cues.

[0106] In some embodiments, the mounting groove 2311 on the handle 23 only comprises the straight area 23111, and then the display screen assembly 222 and the light assembly 221 are arranged in different positions of the straight area 23111, i.e., the light assembly 221 is arranged in the straight area 23111 not covered by the display screen assembly 222.

[0107] Further, the water cup in this embodiment further comprises a temperature measuring device for measuring the liquid temperature of the liquid in the container cavity 11, and the display device 22 comprises a light assembly 221 and / or a display screen assembly 222, the light assembly 221 is used to form different colors of light through light emitting elements to indicate the liquid temperature, and the display screen assembly 222 is used to display the liquid temperature through the screen. It should be explained that the screen of the display screen assembly 222 can be partitioned and used to display the user's water drinking data and the liquid temperature respectively. Alternatively, the temperature measuring device comprises a temperature sensor electrically connected to the control mainboard 24. It can be understood that the temperature measuring device measures the temperature of the liquid in the container cavity 11 in real time through the temperature sensor, converts the temperature data into an electrical signal and transmits it to the control mainboard 24, the control mainboard 24 receives the electrical signal from the temperature sensor, processes and analyzes it and then sends it to the display device 22, and the display device 22 displays according to the data sent by the control mainboard 24.

[0108] Further, as shown in Figure 24 Figure 24 ​The second sectional view of the cup cover 20 in the water cup. The water cup in the embodiment further comprises a sterilization device 25, which is used for performing sterilization operation on the liquid in the containing cavity 11. Optionally, the sterilization device 25 in the embodiment comprises an ultraviolet lamp, which is installed on the cup cover 20 and has a downward light emitting direction. When the sterilization device 25 works, the ultraviolet lamp is lighted, and the ultraviolet lamp light is irradiated into the containing cavity 11, so as to sterilize the liquid in the containing cavity 11. It can be understood that the ultraviolet ray is an effective sterilization means, which can destroy the DNA structure of bacteria, so that the bacteria lose the ability of reproduction, thereby achieving the purpose of sterilization. In the embodiment, the ultraviolet lamp is used as the core component of the sterilization device 25, and the liquid in the containing cavity 11 is irradiated by the ultraviolet ray light with a specific wavelength, so as to kill the bacteria in the liquid. Optionally, the user can start the sterilization device 25 through the control button on the water cup or the smart device (such as a mobile phone APP).

[0109] Further, as shown in Figure 1 、 Figure 2 and Figure 21 、 Figure 22 , Figure 21The utility model discloses a sectional view of water cup, and the water cup further comprises a control mainboard 24; the suction nozzle 21 is rotatably arranged on the cup cover 20, and the suction nozzle 21 is provided with a second magnet 27; the control mainboard 24 is provided with a second hall switch 26 electrically connected therewith; wherein, the control mainboard 24 is used for supplying power to the first hall switch 34 in the flow measuring device 30 under the condition that the second magnet 27 on the suction nozzle 21 triggers the second hall switch 26. Optionally, the second magnet 27 is located at the position close to the second hall switch 26 in the stroke in the embodiment, and the second hall switch 26 is in the initial state, and the second magnet 27 is located at other positions, and the second hall switch 26 is in the triggered state. Optionally, the cup cover 20 is further provided with a suction nozzle cover 28, and the suction nozzle cover 28 is rotatably buckled on the cup cover 20; when the user rotates and opens the suction nozzle cover 28, the suction nozzle 21 will be lifted under the driving of the suction nozzle cover 28, and the second magnet 27 is away from the second hall switch 26, the second hall switch 26 is triggered, and the control mainboard 24 controls the power supply to supply power to the first hall switch 34; when the user rotates the suction nozzle cover 28 and makes it buckle on the cup cover 20, the suction nozzle 21 is pressed down on the cup cover 20 under the pressure of the suction nozzle cover 28, and the second magnet 27 is close to the second hall switch 26, and the second hall switch 26 returns to the initial state, and the control mainboard 24 controls the power supply to cut off the power supply to the first hall switch 34. It can be understood that the triggered state of the second magnet 27 to the second hall switch 26 represents the user's drinking behavior, that is, when the second magnet 27 triggers the second hall switch 26, it represents that the user has lifted the suction nozzle 21, that is, the drinking behavior will occur; the initial state of the second magnet 27 to the second hall switch 26 represents that the user has buckled the suction nozzle 21, and the drinking behavior will not occur.

[0110] In the embodiment, the second hall switch 26 is used for detecting the position of the second magnet 27, and further judging whether the user is performing the drinking behavior, and through the intelligent control logic on the control mainboard 24, the intelligent management of the power supply to the first hall switch 34 is realized. When the second hall switch 26 detects the position change of the second magnet 27, judges that the user will perform the drinking behavior, the control mainboard 24 will control the power supply to supply power to the first hall switch 34; when the user ends the drinking behavior, and the second hall switch 26 returns to the initial state, the control mainboard 24 will cut off the power supply to the first hall switch 34, and only when the user actually performs the drinking behavior, the power supply to the first hall switch 34 is supplied, the energy efficiency ratio of the equipment is improved, and the service life of the equipment is prolonged.

[0111] In some embodiments, as shown in Figure 12 and Figure 13 In order to make the user take and place more stably, the cup body 10 is provided with a silica gel sleeve 14 in some embodiments, so as to increase the friction force when the user holds the water cup, improve the holding stability, and reduce the risk of accidental falling.

[0112] In some embodiments, in order to ensure that the water cup can maintain good liquid path sealing during use, prevent liquid leakage, a sealing ring is arranged at the joint of each flow channel, the sealing ring is made of elastic material (such as rubber, silica gel, etc.), has good elasticity and recovery, and can be elastically deformed when being extruded by external force, and fill and tightly fit in the gap at the joint of the flow channel.

[0113] In some embodiments, as shown in Figure 21 In order to make the liquid in the container cavity 11 more easily sucked out by the user through the suction nozzle 21, the water cup of the embodiment further includes a straw 12 connected to the water inlet 313 on the cup cover 20 and extending into the container cavity 11, so that the user can drink water more conveniently.

[0114] In some embodiments, as shown in Figure 15 and Figure 22 A battery 29 is arranged in the cup cover 20, the battery 29 is electrically connected to the control mainboard 24, so as to supply power for the display device 22 and the flow measurement device 30. Further, the control mainboard 24 is provided with a charging interface 241 electrically connected thereto, the insertion side of the charging interface 241 is exposed on the surface of the cup cover 20, so that the user can connect an external power supply to the charging interface 241 through a charging line, and then charge the battery 29 in the cup cover 20. Alternatively, the charging interface 241 can be a Type-c interface or a Lightning interface or a Microusb interface.

[0115] The above only further illustrates the technical content of the utility model with embodiments, so as to make the reader more easily understand, but does not represent that the embodiments of the utility model are limited to this, any technical extension or re-creation made according to the utility model is also protected by the utility model. The protection scope of the utility model is subject to the claims.

Claims

1. A flow measuring device, characterized in that The utility model relates to a water tank, which comprises: a housing, a rotor assembly, and a first Hall switch; the housing is provided with a cavity, and the housing is provided with a water inlet and a water outlet communicating with the cavity; the rotor assembly is rotatably installed in the cavity; liquid entering the cavity from the water inlet flows out from the water outlet after driving the rotor assembly to rotate, and the first Hall switch is used for sensing the magnetic field change generated when the rotor assembly rotates.

2. A flow measuring device according to claim 1, characterised in that The housing comprises an upper shell and a lower shell, the water outlet is formed in the upper shell, and the water inlet is formed in the lower shell; A groove is arranged on one side of the upper shell facing the lower shell or one side of the lower shell facing the upper shell, the groove comprises a first region, a second region, and a third region, the rotor assembly is rotatably arranged in the first region, the water inlet communicates with the second region, and the water outlet communicates with the third region; Liquid entering from the water inlet first flows into the second region, then flows into the first region to drive the rotor assembly in the first region to rotate, and finally flows into the third region and flows out through the water outlet.

3. A flow measuring device according to claim 2, wherein, The upper shell and the lower shell are detachably installed, and when the upper shell and the lower shell are installed in place, the projection of the water inlet towards the groove is located in the second region, and the projection of the water outlet towards the groove is located in the third region.

4. A flow measuring device according to claim 2, wherein The first region is provided with a first mounting portion, and the first side surface of the rotor assembly is provided with a second mounting portion adapted to the first mounting portion; When the first side surface of the rotor assembly faces the groove for installation, the first mounting portion and the second mounting portion are adaptively installed, and the rotor assembly is correctly installed in the groove.

5. A flow measuring device according to claim 4, wherein The second side surface of the rotor assembly is provided with a third mounting portion which cannot be adaptively installed with the first mounting portion; When the second side surface of the rotor assembly faces the groove for installation, the third mounting portion and the first mounting portion cannot be adaptively installed, and the rotor assembly is installed incorrectly.

6. A flow measuring device according to claim 4, wherein The first mounting portion comprises a positioning shaft and a foolproof part arranged around the positioning shaft; the second mounting portion comprises an avoidance groove and a positioning hole penetrating through the avoidance groove; When the first side surface of the rotor assembly faces the groove for installation, the positioning shaft is inserted into the positioning hole, the avoidance groove is adaptively installed with the positioning shaft and the foolproof part, and the rotor assembly is correctly installed in the groove.

7. A flow measuring device according to claim 5, wherein The first mounting portion comprises a positioning shaft and a foolproof part arranged around the positioning shaft; the second mounting portion comprises an avoidance groove and a positioning hole penetrating through the avoidance groove; the third mounting portion comprises a second protrusion; When the first side surface of the rotor assembly faces the groove for installation, the positioning shaft is inserted into the positioning hole, the avoidance groove is adaptively installed with the positioning shaft and the foolproof part, and the rotor assembly is correctly installed in the groove; When the second side surface of the rotor assembly faces the groove for installation, the positioning shaft is inserted into the positioning hole, the second protrusion cannot be adaptively installed with the positioning shaft and the foolproof part, and the rotor assembly is installed incorrectly.

8. The flow measuring device of claim 1, wherein, The rotor assembly comprises a rotor body, at least two first magnets arranged in the rotor body, and at least one blade extending outward from the periphery of the rotor body; The blade is arranged in a bent manner along the rotation direction of the rotor body.

9. A water cup characterized in that, The flow measuring device comprises the cup body, the cup cover, the nozzle, the first magnet, the first Hall switch, the second magnet, the second Hall switch, and the control mainboard. The cup body comprises a cup opening and a cavity; The cup cover is arranged on the cup opening; The nozzle is arranged on the cup cover and is in communication with the cavity; The water inlet of the flow measuring device is in communication with the cavity, and the water outlet of the flow measuring device is in communication with the nozzle; The flow measuring device is used for measuring the flow of liquid flowing from the cavity to the nozzle.

10. The cup of claim 9, wherein, The water cup further comprises a control mainboard; The nozzle is rotatably arranged on the cup cover, the nozzle is provided with a second magnet, and the control mainboard is provided with a second Hall switch electrically connected thereto; The control mainboard is used for controlling the first Hall switch of the flow measuring device to be powered on when the second magnet on the nozzle triggers the second Hall switch.

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