Positioning plate, water injector in-place control structure, water adding device and household appliance

Abstract

The utility model relates to the technical field of household appliances, and discloses a positioning plate, a water injector in-place control structure, a water adding device and a household appliance. The positioning plate comprises a plate main body provided with a fixing part; the sensing position is arranged on one side, far away from the fixing part, of the plate main body and is suitable for mounting an in-place detection component of the water injector; the limiting blocking rib is arranged on the side, away from the fixing part, of the plate body and suitable for limiting the rotating angle of the water injector. The limiting blocking rib is arranged on the positioning plate to limit the rotation angle of the water injector, the rotation range of the water injector is limited between the initial position and the water adding position, and when the water adding position is reached, the in-place detection component installed on the induction position can be triggered to control the water injector to inject water. Inconvenience caused by water adding when the water injector is not in place or exceeds the water adding position is avoided, the situation that the sensor is triggered by mistake is also avoided, the reliability of the water injector is improved, the water injector is suitable for being applied to household appliances capable of automatically adding water, water adding convenience is improved, and the satisfaction degree of users is improved.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, specifically to a positioning plate, a water injector positioning control structure, a water filling device, and a household appliance. Background Technology

[0002] To facilitate water refilling, some electric tea stoves, electric kettles, and kitchen appliances on the market are equipped with automatic water filling functions. These automatic water filling devices mostly use a rotating water injector. When water is needed, the injector rotates to the top of the device's water inlet to complete the filling. Whether the injector has rotated to the correct position is generally detected by a sensor located near the injector or the water inlet.

[0003] While the above methods improve user convenience, the sensors may be falsely triggered due to environmental factors. This can cause the water dispenser to start adding water before it is fully rotated or to start adding water when no water is needed, resulting in water splashing or overflowing, leading to a poor user experience. Utility Model Content

[0004] In view of this, the present invention provides a positioning plate, a water injector positioning control structure, a water filling device, and a household appliance to solve the problem that the positioning detection sensor of the water injector is prone to false triggering, resulting in a poor user experience.

[0005] In a first aspect, this utility model provides a positioning plate suitable for a water injector, the positioning plate comprising:

[0006] The plate body is provided with a fixing part that mates with the mounting surface of the positioning plate;

[0007] A sensing position is located on the side of the plate body away from the fixing part, and is suitable for installing the positioning detection component of the water injector;

[0008] A limiting rib is provided on the side of the plate body away from the fixed part, which is suitable for limiting the rotation angle of the water injector.

[0009] Beneficial effects: The positioning plate is equipped with limit ribs to limit the rotation angle of the water dispenser, restricting its rotation range to between the initial position and the water filling position. When the water filling position is reached, the position detection component installed on the sensing position can be triggered, thereby controlling the water dispenser to add water. This avoids the inconvenience caused by the water dispenser not being in position or exceeding the water filling position, and also prevents the sensor from being falsely triggered, thus improving the reliability of the water dispenser. It is suitable for application in household appliances with automatic water filling, improving the convenience of water filling and enhancing user satisfaction.

[0010] In one alternative embodiment, the plate body extends along the thickness direction to form the limiting rib.

[0011] Beneficial effects: The limiting ribs are set along the thickness direction of the plate body, which facilitates the cooperation with the limiting ribs on the water injector or the torque transmission component of the water injector. The mechanical limiting method has high reliability and will not cause the water injector to fail to accurately reach the water filling position.

[0012] In one optional implementation, the positioning plate further includes:

[0013] The water injector is rotatably mounted within the mounting hole.

[0014] Beneficial effects: The water injector can be rotatably installed in the mounting hole of the positioning plate, realizing the horizontal positioning of the water injector without affecting the connection and cooperation between the water injector and the transmission component.

[0015] In one optional implementation, the positioning plate further includes:

[0016] The claw is located on the side of the positioning plate away from the fixing part and is located around the mounting hole; the claw is adapted to axially position the water injector.

[0017] Beneficial effects: The water injector is axially positioned by the chuck, preventing axial movement of the water injector without affecting its rotation. The limiting is reliable and the structure is simple.

[0018] In one optional embodiment, the fixing part includes:

[0019] The fixing groove is suitable for engaging with the fixing post on the mounting surface.

[0020] Beneficial effects: The fixing part includes a fixing groove, which has a simple structure, is easy to disassemble and assemble, and realizes the fixed installation of the positioning plate.

[0021] Secondly, this utility model provides a water injector positioning control structure, including:

[0022] The positioning plate described in any of the above embodiments has a sensing component installed at the sensing position;

[0023] Limiting ribs are provided on the water injector or the transmission component of the water injector for transmitting torque;

[0024] The two limiting ribs are arranged at intervals along the circumference of the water injector, and the limiting stop rib is located on the rotation path of the two limiting ribs; or, the two limiting stop ribs are arranged at intervals and are both located on the rotation path of the limiting ribs.

[0025] Beneficial effects: Two limiting ribs (or two limiting stop ribs), one corresponding to the initial position of the water injector and the other corresponding to the water filling position of the water injector, achieve precise limiting, thereby ensuring the water injector is accurately positioned and preventing water from being injected when the water injector is not in the water filling position; it also avoids water spraying problems caused by false triggering of the sensor.

[0026] In one optional embodiment, two of the limiting ribs are disposed on the transmission assembly; the limiting ribs include:

[0027] The first limiting surface is adapted to block one of the limiting ribs;

[0028] The second limiting surface is opposite to the first limiting surface and is adapted to block the other limiting rib.

[0029] Beneficial effect: The two limiting surfaces that are opposite to each other of the limiting ribs serve as the stopping limiting surfaces for the two limiting ribs to reach their positions, thus simplifying the structure.

[0030] In one optional implementation, the positioning control structure further includes:

[0031] A triggering part is disposed on the water injector or the transmission assembly; the movement path of the triggering part is at least partially located within the sensing range of the sensing component.

[0032] Beneficial effects: The triggering part of the positioning control structure only triggers the sensing component after positioning, which improves the reliability of detection, provides accurate judgment basis, and prevents false triggering.

[0033] Thirdly, this utility model also provides a water adding device, comprising:

[0034] The water injector has an initial position and a water filling position;

[0035] A transmission assembly, through which the water injector is connected to the drive mechanism;

[0036] In any of the above-described positioning control structures, the water injector is rotatably mounted on the positioning plate under the drive of the driving mechanism, and can switch between the initial position and the water filling position.

[0037] Beneficial effects: Since the water adding device includes the positioning control structure of this utility model, it has the same technical effects as the positioning control structure, which will not be described in detail here.

[0038] In one optional implementation, the transmission assembly includes:

[0039] The first connecting shaft has two limiting ribs disposed on its periphery.

[0040] Beneficial effect: The limiting ribs are set on the transmission components, which improves the ease of assembly of the water injector.

[0041] Fourthly, this utility model provides a household appliance, including the water filling device described in any of the above-mentioned items.

[0042] Beneficial effects: Since the household appliance includes the water filling device of this utility model, it has the same technical effects as the water filling device, which will not be described in detail here.

[0043] In one alternative implementation, the household appliance is an electric kettle.

[0044] Beneficial effects: Since the electric kettle includes the water filling device of this utility model, it has the same technical effects as the water filling device, which will not be described in detail here. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0046] Figure 1 This is a structural diagram of a positioning plate according to an embodiment of the present utility model;

[0047] Figure 2 This is a structural diagram of a positioning control structure according to an embodiment of the present utility model, showing the state of the water injector in its initial position;

[0048] Figure 3 This is a structural diagram of a positioning control structure according to an embodiment of the present utility model, showing the state of the water injector when it is in the water injection position;

[0049] Figure 4 This is a three-dimensional exploded view of an electric kettle according to an embodiment of the present utility model, where the kettle body is not shown.

[0050] Figure 5 This is an exploded structural diagram of a water injector according to an embodiment of the present utility model;

[0051] Figure 6 This is a three-dimensional structural diagram of a water column added from below according to an embodiment of the present utility model;

[0052] Figure 7 This is a perspective structural diagram of a top cover according to an embodiment of the present utility model;

[0053] Figure 8This is a three-dimensional exploded view of a transmission component according to an embodiment of the present utility model;

[0054] Figure 9 This is a three-dimensional structural diagram of a first connecting shaft according to an embodiment of the present utility model;

[0055] Figure 10 This is a perspective structural diagram of a second connecting shaft according to an embodiment of the present utility model;

[0056] Figure 11 This is a three-dimensional structural diagram of a third connecting shaft according to an embodiment of the present utility model;

[0057] Figure 12 This is an exploded view of the connection structure between a transmission component, water injection, and a motor according to an embodiment of the present invention.

[0058] Figure 13 This is a first-view perspective three-dimensional structural diagram of an electric kettle according to an embodiment of the present utility model;

[0059] Figure 14 This is a second-view perspective three-dimensional structural diagram of an electric kettle according to an embodiment of the present utility model;

[0060] Figure 15 This is a three-dimensional structural diagram of an electric kettle after the kettle body has been removed, according to an embodiment of this utility model.

[0061] Figure 16 This is a three-dimensional structural diagram of a kettle stand according to an embodiment of the present utility model;

[0062] Figure 17 This is a three-dimensional structural diagram of a fixing seat for a kettle stand according to an embodiment of the present utility model;

[0063] Figure 18 This is a three-dimensional structural diagram of a support ring for a kettle stand according to an embodiment of the present utility model;

[0064] Figure 19 This is a cross-sectional view of an electric kettle according to an embodiment of the present utility model.

[0065] Explanation of reference numerals in the attached figures:

[0066] 1. Pot stand;

[0067] 11. Fixed base; 111. Clearance notch; 112. Countersunk groove; 114. Mounting support rib; 115. First mounting part; 1151. Positioning hole;

[0068] 12. Support ring; 121. Decorative cornice; 1211. Through hole; 1212. Recessed decorative part; 122. Ring body; 123. Second mounting part; 124. Mounting column;

[0069] 2. Water injector;

[0070] 21. Transmission assembly; 211. First connecting shaft; 2111. Annular step; 2112. First transmission mating surface; 21121. Positioning groove; 2113, Second transmission mating surface; 2114, Limiting rib; 2115, Clearance window; 2116, Trigger part; 2117, Upper abutment surface; 212, Second connecting shaft; 2121, Transmission rod; 21211, Third transmission mating surface; 2122, Skirt; 21221, Fourth transmission mating surface; 2123, Pre-assembled part; 2124, Lower abutment surface; 213, Third connecting shaft; 2131, Transmission cap; 21311, Fifth transmission mating surface; 2132, Input shaft; 21321, Shaft hole; 214, Pre-tightening mechanism; 215, Anti-over-torsion structure; 2151, Raised rib; 21511, Guide surface; 2152, Protrusion; 21521, Guide slope;

[0071] 22. Lower water column; 221. Pipe body; 2211. Water inlet; 2212. Mating structure; 22121. Positioning rib; 2213. Upper shoulder; 2214. Lower shoulder; 2215. Connecting column; 222. Swivel arm; 2221. Water supply port; 2222. Groove cavity; 2223. Fastener; 223. First connecting pipe; 224. First connector; 225. Second connector;

[0072] 23. Top cover; 231. Buckle;

[0073] 3. Positioning plate;

[0074] 30. Main body of the plate; 31. Limiting rib; 32. Fixing part; 33. Mounting hole; 331. Matching rib;

[0075] 34. Claw; 35. Mounting position; 36. Sensor position;

[0076] 4. Second connecting pipe;

[0077] 5. Electric motor;

[0078] 6. Water pump;

[0079] 7. Photoelectric switch;

[0080] 8. The body of the pot;

[0081] 81. Spout;

[0082] 82. Water injection port;

[0083] 83. Teapot handle. Detailed Implementation

[0084] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0085] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0086] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0087] The following is combined with Figures 1 to 19 The following describes embodiments of the present invention.

[0088] According to embodiments of the present invention, on the one hand, such as Figure 1 As shown, a positioning plate 3 is provided, suitable for a water injector 2, the positioning plate 3 comprising:

[0089] The plate body 30 is provided with a fixing part 32 that mates with the mounting surface of the positioning plate 3;

[0090] The sensing position 36 is located on the side of the plate body 30 away from the fixing part 32, and is suitable for installing the positioning detection component of the water injector 2;

[0091] The limiting rib 31 is provided on the side of the plate body 30 away from the fixing part 32, and is suitable for limiting the rotation angle of the water injector 2.

[0092] The positioning plate 3 is equipped with a limiting rib 31 to limit the rotation angle of the water injector 2, restricting its rotation range between the initial position and the water filling position. When the water filling position is reached, the position detection component installed on the sensing position 36 can be triggered, thereby controlling the water injector 2 to add water. This avoids the inconvenience caused by the water injector 2 not being in position or exceeding the water filling position, and also prevents the sensor from being falsely triggered, thus improving the reliability of the water injector 2. It is suitable for application in household appliances with automatic water filling, improving the convenience of water filling and enhancing user satisfaction.

[0093] In some embodiments, the plate body 30 extends along the thickness direction to form the limiting rib 31.

[0094] The limiting rib 31 is set along the thickness direction of the plate body 30, which facilitates its cooperation with the limiting rib 2114 on the water injector 2 or the torque transmission component 21 of the water injector 2. The mechanical limiting method has high reliability and will not cause the water injector 2 to fail to accurately reach the water filling position.

[0095] In some embodiments, the positioning plate 3 further includes:

[0096] The water injector 2 is rotatably disposed within the mounting hole 33. A mating rib 331 is also provided within the mounting hole 33.

[0097] The water injector 2 can be rotatably installed in the mounting hole 33 of the positioning plate 3 to achieve horizontal positioning of the water injector 2 without affecting the connection and cooperation between the water injector 2 and the transmission component 21.

[0098] In some embodiments, the positioning plate 3 further includes:

[0099] The claw 34 is disposed on the side of the positioning plate 3 away from the fixing part 32 and located around the mounting hole 33; the claw 34 is adapted to axially position the water injector 2.

[0100] The water injector 2 is axially positioned by the chuck 34 to prevent axial movement of the water injector 2, and does not affect the rotation of the water injector 2. The limiting is reliable and the structure is simple.

[0101] In some embodiments, the fixing part 32 includes:

[0102] The fixing groove is suitable for engaging with the fixing post on the mounting surface.

[0103] The fixing part 32 includes a fixing groove, which has a simple structure and is easy to disassemble and assemble, so as to realize the fixed installation of the positioning plate 3.

[0104] According to an embodiment of the present invention, another aspect provides a water injector positioning control structure, comprising:

[0105] Positioning plate 3, a sensing component is installed at the sensing position 36;

[0106] Limiting rib 2114 is provided on the water injector 2 or the transmission assembly 21 of the water injector 2 for transmitting torque;

[0107] The two limiting ribs 2114 are arranged at intervals along the circumference of the water injector 2, and the limiting baffle 31 is located on the rotation path of the two limiting ribs 2114; or, the two limiting baffles 31 are arranged at intervals and are both located on the rotation path of the limiting ribs 2114.

[0108] Two limiting ribs 2114 (or two limiting stop ribs 31), one corresponding to the initial position of the water injector 2 and the other corresponding to the water filling position of the water injector 2, achieve precise limiting, thereby ensuring that the water injector 2 is accurately positioned, avoiding the situation where the water injector 2 is not in the water filling position; and also avoiding the problem of water splashing caused by false triggering of the sensor.

[0109] In some embodiments, two limiting ribs 2114 are disposed on the transmission assembly 21; the limiting rib 31 includes:

[0110] The first limiting surface is adapted to block one of the limiting ribs 2114;

[0111] The second limiting surface is opposite to the first limiting surface and is adapted to block the other limiting rib 2114.

[0112] The two opposing limiting surfaces of the limiting ribs 31 serve as the stopping limiting surfaces for the two limiting ribs 2114, simplifying the structure.

[0113] In some embodiments, the positioning control structure further includes:

[0114] A triggering part 2116 is disposed on the water injector 2 or the transmission assembly 21; the movement path of the triggering part 2116 is at least partially located within the sensing range of the sensing component.

[0115] The triggering part 2116 of the positioning control structure triggers the sensing component only after positioning, which improves the reliability of detection, provides accurate judgment basis, and prevents false triggering.

[0116] According to an embodiment of the present invention, in another aspect, a water adding device is also provided, comprising:

[0117] Water injector 2 has an initial position and a water filling position;

[0118] Transmission assembly 21, through which the water injector 2 is connected to the drive mechanism;

[0119] The positioning control structure allows the water injector 2 to be rotatably mounted on the positioning plate 3 under the drive of the driving mechanism, enabling it to switch between the initial position and the water filling position.

[0120] Since the water filling device includes the positioning control structure of this utility model, it has the same technical effect as the positioning control structure, which will not be described in detail here.

[0121] In some embodiments, the water injector 2 includes an upper cover 23, a first connector 224, a first connecting pipe 223, a second connector 225, a connector sealing ring, a lower water column 22 sealing ring, and a lower water column 22. One end of the first connector 224 is connected to the first connecting pipe 223, and the other end of the first connector 224 is the water outlet, which can add water to the water inlet 82 of the lid. One end of the second connector 225 is connected to the first connecting pipe 223, and the other end of the second connector 225 is the water inlet, which is sealed to the lower water column 22 by two connector sealing rings. The first connector 224, the first connecting pipe 223, and the second connector 225 are installed together in the mounting cavity of the lower water column 22, and the upper cover 23 is fastened to the rotating arm 222 of the lower water column 22 by a snap fastener 231. The lower end of the lower water column 22 is connected to the water outlet of the water pump 6 through the second connecting pipe 4.

[0122] A positioning plate 3 is mounted on the support ring 12. The positioning plate 3 is fastened to the support ring 12 by two screws. The positioning plate 3 has a mounting hole 33 in the middle and a locking structure on its periphery. The lower water column 22 passes through the mounting hole 33 and is axially limited by the locking structure. Specifically, the locking structure of the positioning plate 3 includes an upper limit surface and a lower limit surface, which respectively cooperate with the upper shoulder 2213 and the lower shoulder 2214 of the lower water column 22 to limit the upper and lower positions of the lower water column 22. The lower water column 22 has a sealing ring mounting groove, and a sealing ring is provided between the support ring 12 and the lower water column 22 to prevent the ingress of external water.

[0123] A torque transmission assembly 21 is provided between the lower water column 22 and the motor 5. The transmission assembly 21 includes a first connecting shaft 211, a second connecting shaft 212, and a third connecting shaft 213. The first connecting shaft 211 has holes at both its upper and lower ends, and its upper end is fitted onto the lower end of the lower water column 22. Both the first connecting shaft 211 and the lower water column 22 have polygonal mating surfaces. The polygonal mating surface of the lower water column 22 has a positioning rib 22121, and the polygonal mating surface of the first connecting shaft 211 has a positioning groove 21121. The two are connected and transmitted through the polygonal mating surfaces. The mating of the positioning rib 22121 and the positioning groove 21121 prevents incorrect installation direction during assembly and makes the connection and transmission between the two more reliable. The second connecting pipe 4, which connects the lower end of the lower water column 22 to the water pump 6, is introduced through an access notch on the first connecting shaft 211. The lower end of the first connecting shaft 211 and the upper end of the second connecting shaft 212 are also connected by a polygonal hole shaft for transmission.

[0124] A torsion spring serving as a pre-tightening mechanism 214 is installed between the first connecting shaft 211 and the second connecting shaft 212. The upper end of the torsion spring abuts against the upper abutment surface 2117 at the lower end of the first connecting shaft 211, and the lower end of the torsion spring abuts against the lower abutment surface 2124 of the second connecting shaft 212. The second connecting shaft 212 is movably connected to the first connecting shaft 211 by fastening screws. The lower end of the second connecting shaft 212 is provided with a transmission rib 2151, and the third connecting shaft 213 is provided with a transmission protrusion. The shaft hole 21321 at the lower end of the third connecting shaft 213 is interference-fitted with the flat rotating shaft of the motor 5. When water is added, the motor 5 drives the third connecting shaft 213 to rotate, which in turn drives the second connecting shaft 212 to rotate, which in turn drives the first connecting shaft 211 to rotate. The first connecting shaft 211 drives the lower water column 22 to rotate above the water inlet 82 of the kettle lid. The water pump 6 is connected to the lower water column 22, and automatic water addition is achieved by controlling the opening of the water pump 6.

[0125] To prevent damage to the motor 5 from excessive force applied to the water injector 2, an over-torque protection structure is implemented. This structure includes a third connecting shaft 213, an over-torque spring serving as a pre-tightening mechanism 214, and a second connecting shaft 212. The third connecting shaft 213 has a protrusion 2152 with a guide slope 21521, and the second connecting shaft 212 has a rib 2151 with a guide slope 21521. Under normal conditions, the over-torque spring presses the second connecting shaft 212 downwards against the third connecting shaft 213, and the protrusion on the third connecting shaft 213 drives the rib 2151 on the second connecting shaft 212. Because the rib 2151 on the second connecting shaft 212 and the protrusion on the third connecting shaft 213 are guided by slopes, when subjected to excessive external force, the second connecting shaft 212 will compress the over-torque spring, separating from the third connecting shaft 213 and spinning freely, thus providing over-torque protection for the motor 5. The motor 5 drives the lower water column 22 to rotate, allowing it to rotate between the initial position and the water-filling position.

[0126] In some embodiments, a transmission assembly 21 includes:

[0127] The first connecting shaft 211 is adapted to be connected to the component to be driven in a transmission manner;

[0128] The third connecting shaft 213 is suitable for transmission connection with the power output end of the drive mechanism;

[0129] The second connecting shaft 212 is driven between the first connecting shaft 211 and the third connecting shaft 213; a pre-tightening mechanism 214 is provided between the first connecting shaft 211 and the second connecting shaft 212, which can press the second connecting shaft 212 against the third connecting shaft 213;

[0130] An anti-torsion structure 215 is provided on the transmission mating surface of the second connecting shaft 212 and the third connecting shaft 213; when the torque between the second connecting shaft 212 and the third connecting shaft 213 is greater than the transmission torque, the second connecting shaft 212 can disengage from the third connecting shaft 213 along the anti-torsion structure 215.

[0131] like Figure 4 As shown, the transmission assembly 21 includes a first connecting shaft 211, a second connecting shaft 212, and a third connecting shaft 213. The third connecting shaft 213 transmits the kinetic energy of the drive mechanism to the second connecting shaft 212, and then transmits the kinetic energy to the driven component through the first connecting shaft 211, which is connected to the second connecting shaft 212. This facilitates the rotation of the driven component. Since an anti-over-torque structure 215 is provided on the transmission mating surface between the second connecting shaft 212 and the third connecting shaft 213, when the torque between the second connecting shaft 212 and the third connecting shaft 213 is greater than the transmission torque, the second connecting shaft 212 can disengage from the third connecting shaft 213 along the anti-over-torque structure 215. The torque transmission link is disconnected, avoiding damage to the drive mechanism connected to the third connecting shaft 213, thereby achieving over-torque protection. Furthermore, a second connecting shaft 212 is provided between the third connecting shaft 213, which serves as the power input shaft 2132, and the first connecting shaft 211, which serves as the power output shaft. When the transmission assembly 21 encounters excessive torque and axial separation, it will not affect the driven component, thus preventing the driven component from axially shifting and causing a poor user experience.

[0132] In some embodiments, the anti-torsion structure 215 includes:

[0133] A rib 2151 is provided on one of the end faces of the second connecting shaft 212 and the third connecting shaft 213;

[0134] The protrusion 2152 is disposed on one of the end faces of the second connecting shaft 212 and the third connecting shaft 213; the protrusion 2152 and the rib 2151 are in a transmission engagement.

[0135] The transmission connection is achieved by using ribs 2151 and protrusions 2152, which serve as both a transmission structure and an anti-over-torsion structure 215. The design is reasonable and the structure is more compact.

[0136] In some embodiments, the rib 2151 is provided with a guide surface 21511, and the protrusion 2152 is provided with a guide slope 21521. The rib 2151 and the protrusion 2152 can disengage from the guide slope 21521 along the guide surface 21511.

[0137] A guide surface 21511 is provided on the rib 2151, which cooperates with the guide slope 21521 on the protrusion 2152. When the torque is greater than the transmission torque, the rib 2151 and the protrusion 2152 can be guided and disengaged along the guide surface 21511 and the guide slope 21521, and the second connecting shaft 212 is disengaged from the third connecting shaft 213. The transmission process is interrupted to avoid damage to the drive mechanism.

[0138] In some embodiments, such as Figure 9 As shown, the first connecting shaft 211 is a hollow cylinder, and an annular step 2111 is formed in the hollow cavity of the first connecting shaft 211, dividing the hollow cavity into a first connecting cavity and a second connecting cavity; the first connecting shaft 211 also includes:

[0139] The first transmission mating surface 2112 is adapted to be connected with the component to be driven, and the first transmission mating surface 2112 is disposed in the first connecting cavity;

[0140] The second transmission mating surface 2113 is adapted to mate with the second connecting shaft 212; the second transmission mating surface 2113 is disposed in the second connecting cavity; one end of the second connecting shaft 212 passes through the second connecting cavity and overlaps the annular step 2111.

[0141] The annular step 2111 formed in the hollow cavity of the first connecting shaft 211 can serve as a limiting structure for the second connecting shaft 212, limiting the axial movement distance of the second connecting shaft 212, preventing excessive axial movement of the second connecting shaft 212 during the process of disengaging from the third connecting shaft 213, and improving the reliability of the transmission assembly 21.

[0142] As shown in the figure, a positioning groove 21121 is also provided on the first transmission mating surface 2112, which is suitable for engaging with the positioning rib 22121 of the water injector 2 to prevent mistaken connection. Two limiting ribs 2114 are also provided on the top outer periphery of the first transmission mating surface 2112. The two limiting ribs 2114 are spaced apart and can cooperate with the limiting ribs 31 on the surrounding environmental parts to limit the rotation angle of the transmission assembly 21.

[0143] It should be noted that a clearance window 2115 is also provided on the pipe wall of the first connecting shaft 211, which allows the water supply pipe to be led out to the second connecting pipe 4 for external water supply device. The first connecting shaft 211 will not drive the water supply pipe to move during rotation, so the water supply pipe will not be bent or other problems, thus extending the service life of the water supply pipe.

[0144] In some embodiments, both the first transmission mating surface 2112 and the second transmission mating surface 2113 include polygonal mating surfaces. The transmission mating surfaces include polygonal mating surfaces, utilizing the meshing of polygons to achieve transmission, resulting in a simple structure, high transmission reliability, and suitability for torque transmission.

[0145] In some embodiments, such as Figure 10 As shown, the second connecting shaft 212 includes:

[0146] The transmission rod 2121 has a third transmission mating surface 21211 that mates with the first connecting shaft 211 on its top periphery near the first connecting shaft 211;

[0147] Skirt 2122 is located at the bottom end of transmission rod 2121 near the third connecting shaft 213; the bottom end of skirt 2122 is provided with a fourth transmission mating surface 21221 that mates with the third connecting shaft 213, and pre-tightening mechanism 214 abuts against the annular top surface of skirt 2122.

[0148] A skirt 2122 is provided at the bottom end of the transmission rod 2121 to increase the area of ​​the transmission mating surface between the second connecting shaft 212 and the third connecting shaft 213, which also facilitates the setting of the anti-over-torsion structure 215; it also facilitates the configuration of the pre-tightening mechanism 214, so that the pre-tightening force acts on the second connecting shaft 212, pressing the second connecting shaft 212 against the third connecting shaft 213 to achieve reliable transmission.

[0149] In some embodiments, the top end of the transmission rod 2121 is provided with a mounting portion, and a pre-installed component 2123 is provided on the mounting portion. The mounting portion can pass through the annular step 2111 and be confined within the first connecting cavity by the pre-installed component 2123.

[0150] Specifically, the pre-installed component 2123 is a screw with a relatively large screw head, which can support the second connecting shaft 212 within the hollow cavity of the first connecting shaft 211, facilitating installation. The second connecting shaft 212 can be connected to the annular step 2111 by screws.

[0151] By setting up pre-installed component 2123, during the assembly of transmission component 21, the second connecting shaft 212 can be initially positioned and fixed in the cavity of the first connecting shaft 211 to prevent the second connecting shaft 212 from falling off and improve the ease of installation.

[0152] In some embodiments, such as Figure 11 As shown, the third drive shaft includes:

[0153] The transmission cap 2131 is provided with a fifth transmission mating surface 21311 that is connected to the fourth transmission mating surface 21221; the anti-over-torsion structure 215 is provided on the fourth transmission mating surface 21221 and the fifth transmission mating surface 21311.

[0154] The input shaft 2132 is located on the side of the transmission cap 2131 away from the fifth transmission mating surface 21311; the input shaft 2132 is provided with a shaft hole 21321, and the power output end of the drive mechanism can be matched and set in the shaft hole 21321.

[0155] The power output end of the drive mechanism is directly set in the shaft hole 21321 of the shaft inlet of the third transmission shaft, which ensures high connection reliability and smooth transmission.

[0156] According to an embodiment of the present invention, another aspect provides a water adding device, comprising:

[0157] Water injector 2 has a water supply port 2221;

[0158] Drive mechanism;

[0159] The water injector 2 is connected to the drive mechanism via the transmission assembly 21.

[0160] The water injector 2 is driven by the transmission component 21 of this invention, and the drive mechanism drives the water injector 2 to rotate, facilitating automatic water filling. When the water injector 2 encounters resistance or a large turning torque, the transmission component 21 can disconnect the transmission by relying on the anti-over-torsion structure 215, avoiding damage to the drive mechanism and improving the safety and reliability of the water filling device. Moreover, a second connecting shaft 212 is provided between the third connecting shaft 213, which serves as the power input shaft 2132, and the first connecting shaft 211, which serves as the power output shaft. When the transmission component 21 encounters excessive torque and axially separates, it will not affect the driven component, making the installation of the driven component more secure and preventing axial movement of the driven component from causing a bad user experience.

[0161] Specifically, the drive mechanism includes motor 5.

[0162] According to an embodiment of the present invention, in another aspect, a household appliance is also provided, including the above-mentioned water filling device.

[0163] Household appliances include the water filling device of this utility model, and therefore have the same technical effects as the water filling device, which will not be described in detail here.

[0164] Household appliances can include electric kettles, electric tea stoves, cooking appliances, and dishwashers, as well as appliances that can automatically add water or water tanks that can automatically fill water; there are no specific limitations here.

[0165] In some embodiments, such as Figures 13-19 As shown, the household appliance is an electric kettle, which includes:

[0166] The kettle body 8 is provided with a water inlet 82; the top of the kettle body 8 is provided with a handle 83;

[0167] The kettle base 1 and the kettle body 8 are placed in the receiving cavity of the kettle base 1; the water injector 2 is rotatably set on the kettle base 1, and the water inlet 82 is located on the rotation path of the water supply inlet 2221.

[0168] Since the electric kettle includes the water filling device of this utility model, if the water filling device encounters an obstacle during rotation or if the external torque is too large, the transmission component 21 will disconnect, so that the drive mechanism will not be damaged, thus improving electrical safety.

[0169] A specific embodiment of this utility model provides a kettle stand 1, comprising:

[0170] The fixing base 11 has a cylindrical structure with an open top, and the inner cavity of the cylindrical fixing base 11 is suitable for accommodating the kettle body 8 of the electric kettle.

[0171] The mounting structure is at least partially disposed on the fixed base 11; the mounting structure includes a first mounting part 115, through which the water injector 2 of the electric kettle can be disposed on the periphery of the fixed base 11.

[0172] The base 11 of the kettle stand 1 forms a cylindrical structure with an open top. The kettle body 8 can be placed in the inner cavity of the base 11 for heating. Since the water injector 2 is set on the periphery of the base 11 through the first mounting part 115, the kettle body 8 will not interfere with the water injector 2 no matter which direction it is taken out or put in, which improves convenience and user experience. Moreover, a hole can be made in the table surface on which the electric kettle is placed, so that the base 11 can be directly sunk below the table surface, reducing the space occupied on the table surface. Since the kettle body 8 is contained in the inner cavity of the base 11, the surface of the kettle body 8 is isolated, avoiding burns caused by accidentally touching the hot kettle body 8. The kettle body 8 is also not easy to tip over by external force, which improves the safety of use, especially reducing the risk of burns to children.

[0173] Specifically, the first mounting part 115 includes a positioning ear located at the bottom of the side wall of the fixed base 11, and a positioning hole 1151 is provided on the positioning ear to facilitate the installation and positioning of the water injector 2.

[0174] In some embodiments, the kettle base 1 further includes:

[0175] The support ring 12 is located at the opening of the fixed base 11; part of the mounting structure is located on the support ring 12.

[0176] A support ring 12 is provided at the opening of the fixed base 11, which hides the transmission component 21 of the water injector 2 under the support ring 12, improving the aesthetics; and it also allows some of the mounting structure to be set on the support ring 12, improving the ease of assembly of the electric kettle parts.

[0177] In some embodiments, the support ring 12 includes:

[0178] The ring body 122 is a tubular structure with openings at both ends;

[0179] A decorative eave 121 is provided at the first end of the ring body 122, and the support ring 12 is connected to the fixed base 11 through the decorative eave 121; the second end of the ring body 122 extends into the inner cavity of the fixed base 11; a through hole 1211 for the water injector 2 to pass through is provided on the decorative eave 121.

[0180] The support ring 12 is attached to the fixed seat 11 by the decorative eaves 121 at the first end of the ring body 122; the second end of the ring body 122 extends into the inner cavity of the fixed seat 11. The decorative eaves 121 serve a decorative purpose and shield the fixed seat 11 and the parts installed on the pot seat 1. In addition to improving the aesthetics, it also provides a certain degree of protection.

[0181] In some embodiments, the mounting structure includes a second mounting portion 123 disposed on the underside of the decorative eaves 121.

[0182] The mounting structure located on the underside of the decorative eaves 121 can conveniently limit and fix the components and other devices of the water injector 2, effectively utilize space, and improve connection reliability.

[0183] In some embodiments, the support ring 12 is detachably mounted on the fixing base 11.

[0184] The support ring 12 and the fixed base 11 are installed together in a detachable manner, which is convenient for maintenance; it is also convenient to manufacture separately and then reassemble them, simplifying the manufacturing process.

[0185] In some embodiments, a clearance notch 111 is formed at the edge of the fixing seat 11.

[0186] A notch 111 is provided at the edge of the fixed base 11 to allow the spout 81 of the kettle body 8 to extend out. This reduces the volume of the kettle base 1 and facilitates the release and diffusion of steam.

[0187] In some embodiments, the support ring 12 has a relief decoration portion 1212 formed at the relief notch 111.

[0188] Corresponding to the clearance notch 111, a recessed clearance decorative part 1212 is provided on the support ring 12, which also serves to cover and decorate, prevent dust and foreign objects from entering the gap, and improve the overall appearance and aesthetics.

[0189] In some embodiments, such as Figures 17-18As shown, the fixing base 11 has a cylindrical structure. A notch 111 is provided at the edge of the opening of the fixing base 11 to allow space for the spout 81. A groove 112 is provided on the side wall of the fixing base 11, and a through-hole is provided on the bottom surface of the groove 112. A mounting post 124 is provided on the side wall of the ring body 122 of the support ring 12. The mounting post 124 is correspondingly positioned in the groove 112, and its bottom end extends through the slot. Multiple mounting support ribs 114 are distributed on the bottom surface of the inner cavity of the fixing base 11 to provide support for the support ring 12 and to reserve installation space for the electric heating assembly.

[0190] In some embodiments, the transmission assembly 21 is concealed within the kettle seat 1.

[0191] The moving component is hidden inside the kettle base 1. It is small in size, does not take up space on the table, and is also more aesthetically pleasing.

[0192] In some embodiments, the electric kettle is further provided with a water dispenser 2 arrival detection device. The arrival detection device includes:

[0193] Photoelectric switch 7 is connected to the controller of the electric kettle; the controller is also connected to the drive mechanism; photoelectric switch 7 is located at mounting position 35 on the positioning plate;

[0194] The trigger structure is located at the top of the first connecting shaft 211.

[0195] When the transmission assembly 21 rotates to a specific position (i.e., the position corresponding to when the water supply port 2221 rotates above the water inlet 82), the trigger structure moves between the transmitter and receiver of the photoelectric switch 7, blocking the light transmission between them. The photoelectric switch 7 then sends a signal back to the controller. Upon receiving the signal, the controller stops the drive mechanism, achieving automatic positioning detection and control. The controller is also connected to the water pump 6 or the water supply switch. While stopping the drive mechanism, it simultaneously starts the water pump 6 or opens the water supply switch, allowing water to be automatically supplied to the water inlet 82 via the water supply device.

[0196] The water injector 2 of the water filling device includes a lower water column 22 and an upper cover 23. The structure of the upper cover 23 is described in detail below. Figure 7 The lower water inlet 22's rotating arm 222 is equipped with a latch 2223, and the upper cover 23 is equipped with a snap fastener 231. The upper cover 23 is detachably connected to the rotating arm 222 through the snap fastener 231 and the latch 2223. The snap fastener 231 engages with the latch 2223, thereby detachably installing the upper cover 23 onto the lower water inlet 22's rotating arm 222, facilitating assembly and disassembly.

[0197] like Figures 5-6 As shown, the water column 22 below includes:

[0198] The main body of the pipe fitting 221 has a water inlet hole 2211 at the water inlet end;

[0199] A swivel arm 222 is located at the outlet end of the pipe body 221. The swivel arm 222 has a groove-shaped structure with an open top surface. A water inlet 2221 is provided on the bottom side of the swivel arm 222, and a water filling channel is formed between the water inlet 2211 and the water inlet 2221.

[0200] The main body 221 of the pipe fitting has a mating structure 2212 formed on its periphery near its water inlet end. The mating structure 2212 is adapted to be connected to the drive mechanism through the transmission assembly 21. The drive mechanism can drive the lower water column 22 to rotate so that the water supply port 2221 moves above the water-using device.

[0201] The lower water column 22 includes a pipe body 221 and a rotating arm 222. A water inlet 2211 on the pipe body 221 and a water supply port 2221 on the rotating arm 222 form a water filling channel. The water filling structure is simple, easy to assemble, improves assembly efficiency, and is also easy to maintain.

[0202] In some embodiments, the water column 22 further includes:

[0203] The first connecting pipe 223 is disposed in the groove 2222 of the rotating arm 222;

[0204] The first connector 224 is disposed in the groove 2222 of the rotating arm 222; the first end of the first connector 224 is connected to the end of the first connecting pipe 223 near the water supply port 2221, and the second end of the first connector 224 is connected to the water supply port 2221.

[0205] The second connector 225 is partially disposed in the groove 2222 of the rotating arm 222; the first end of the second connector 225 is connected to the end of the first connecting pipe 223 near the main body 221 of the pipe fitting, and the second end of the second connector 225 is connected to the main body 221 of the pipe fitting and communicates with the water inlet 2211.

[0206] The first connecting pipe 223 is connected to the water supply port 2221 and the water inlet 2211 through the first connector 224 and the second connector 225 respectively, which can ensure water quality safety, facilitate the use of different materials for the water flow channel and the rotating arm 222, and also ensure sealing performance.

[0207] In some embodiments, the circumferential side of the pipe body 221 is provided with an upper shoulder 2213 and a lower shoulder 2214, which are suitable for connection with the environmental component to achieve axial positioning of the lower water column 22.

[0208] An upper shoulder 2213 and a lower shoulder 2214 are provided on the pipe body 221 to facilitate axial positioning of the pipe body 221 and improve installation reliability.

[0209] In some embodiments, a connecting post 2215 is provided at the bottom end of the pipe body 221, and a water inlet 2211 is located at the end of the connecting post 2215; a mating structure 2212 is provided between the connecting post 2215 and the lower shoulder 2214.

[0210] A connecting post 2215 is provided at the bottom of the pipe body 221 to facilitate connection with the water supply pipe and improve assembly convenience.

[0211] In some embodiments, the water column 22 further includes:

[0212] Positioning ribs 22121 or positioning grooves 21121 are provided at the mating structure 2212 and are suitable for matching and connecting with positioning grooves 21121 or positioning ribs 22121 on the transmission assembly 21.

[0213] The water column 22 and the transmission assembly 21 are provided with positioning ribs 22121 and positioning grooves 21121, which can prevent mistakes during the installation process and improve installation efficiency.

[0214] A positioning plate 3 is fixed on the support ring 12, and a photoelectric switch 7 is installed on the positioning plate 3. The photoelectric switch 7 is provided with a slot sensing part. The motor 5 drives the first connecting shaft 211 and the lower water column 22 to rotate through the transmission. The first connecting shaft 211 is provided with a trigger part 2116. When the lower water column 22 rotates to directly above the water inlet 82, the trigger part 2116 of the first connecting shaft 211 rotates into the slot sensing part of the photoelectric switch 7. The photoelectric switch 7 receives the signal that the lower water column 22 has rotated into position and transmits it to the control unit of the electric kettle, controlling the motor 5 to stop rotating and simultaneously controlling the water pump 6 to start working to add water into the kettle.

[0215] The positioning plate 3 is provided with limiting ribs, and the first connecting shaft 211 is provided with a first limiting rib 2114 and a second limiting rib 2114. When the water column is in the initial position, the first limiting rib 2114 engages with the front of the limiting rib 31. When the water column is in the water filling position, the second limiting rib 2114 engages with the back of the limiting rib 31, thereby limiting the rotation angle of the lower water column 22 between the initial position and the water filling position. After water filling is completed, the lower water column 22 returns to the initial position.

[0216] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by this application.

Claims

1. A positioning plate, characterized in that, Suitable for water injectors (2), the positioning plate (3) includes: The plate body (30) is provided with a fixing part (32) that mates with the mounting surface of the positioning plate (3); The sensing position (36) is located on the side of the plate body (30) away from the fixing part (32) and is suitable for installing the positioning detection component of the water injector (2); A limiting rib (31) is provided on the side of the plate body (30) away from the fixing part (32) and is suitable for limiting the rotation angle of the water injector (2).

2. The positioning plate according to claim 1, characterized in that, The plate body (30) extends along the thickness direction to form the limiting rib (31).

3. The positioning plate according to claim 1 or 2, characterized in that, The positioning plate (3) also includes: The water injector (2) is rotatably disposed within the mounting hole (33).

4. The positioning plate according to claim 3, characterized in that, The positioning plate (3) also includes: The claw (34) is disposed on the side of the positioning plate (3) away from the fixing part (32) and located around the mounting hole (33); the claw (34) is adapted to axially position the water injector (2).

5. The positioning plate according to claim 1, characterized in that, The fixing part (32) includes: The fixing groove is suitable for engaging with the fixing post on the mounting surface.

6. A water injector positioning control structure, characterized in that, include: The positioning plate (3) according to any one of claims 1 to 5, wherein a sensing element is installed at the sensing position (36); Limiting rib (2114) is provided on the water injector (2) or the transmission assembly (21) of the water injector (2) for transmitting torque; The two limiting ribs (2114) are arranged at intervals along the circumference of the water injector (2), and the limiting baffle (31) is located on the rotation path of the two limiting ribs (2114); or, the two limiting baffles (31) are arranged at intervals and are both located on the rotation path of the limiting ribs (2114).

7. The positioning control structure according to claim 6, characterized in that, Two limiting ribs (2114) are disposed on the transmission assembly (21); the limiting stop rib (31) includes: The first limiting surface is adapted to block one of the limiting ribs (2114); The second limiting surface is opposite to the first limiting surface and is adapted to block the other limiting rib (2114).

8. The positioning control structure according to claim 6 or 7, characterized in that, The positioning control structure also includes: A trigger part (2116) is disposed on the water injector (2) or the transmission assembly (21); the movement path of the trigger part (2116) is at least partially located within the sensing range of the sensing component.

9. A water-adding device, characterized in that, include: Water injector (2), having an initial position and a water filling position; The water injector (2) is connected to the drive mechanism via the transmission assembly (21); According to any one of claims 6 to 8, in the positioning control structure, the water injector (2) is rotatably mounted on the positioning plate (3) under the drive of the driving mechanism, and can switch between the initial position and the water filling position.

10. The water adding device according to claim 9, characterized in that, The transmission assembly (21) includes: The first connecting shaft (211) has two limiting ribs (2114) disposed on the periphery of the first connecting shaft (211).

11. A household appliance, characterized in that, Includes the water supply device as described in claim 9 or 10.

12. The household appliance according to claim 11, characterized in that, The household appliance in question is an electric kettle.

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