Positioning plate, water adding device and household appliance

Abstract

The invention relates to the technical field of household appliances, and discloses a positioning plate, 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] The invention relates to the technical field of household appliances, and in particular to a positioning plate, a water adding device and a household appliance. Background Art

[0002] In order to facilitate water addition, some electric tea stoves, electric kettles and kitchen appliances on the market are equipped with automatic water addition functions. Most of these automatic water addition devices use a rotatable water injector. When water needs to be added, the water injector is driven to rotate above the water injection port of the device to complete the water addition. Whether the water injector is rotated in place is generally detected by a sensor installed in the water injector or the water injection port.

[0003] Although the above method improves the user's convenience, due to the influence of the use environment, the sensor may be triggered incorrectly, resulting in the water injector starting to add water before it is rotated into place or starting to add water when no water is needed, resulting in water splashing or overflowing, and the user experience is poor. Summary of the invention

[0004] In view of this, the present invention provides a positioning plate, a water adding device and a household appliance to solve the problem that the arrival detection sensor of the water injector is easily triggered by mistake, resulting in a poor user experience.

[0005] In a first aspect, the present invention provides a positioning plate suitable for a water injector, the positioning plate comprising:

[0006] A plate body, provided with a fixing portion cooperating with the mounting surface of the positioning plate;

[0007] A sensing position, which is arranged on a side of the plate body away from the fixing portion and is suitable for installing an in-place detection component of the water injector;

[0008] The limiting retaining rib is arranged on a side of the plate body away from the fixing portion and is suitable for limiting the rotation angle of the water injector.

[0009] Beneficial effect: A limit rib is set on the positioning plate to limit the rotation angle of the water injector, limiting its rotation range between the initial position and the water adding position. When the water adding position is reached, the in-place detection component installed on the sensing position can be triggered, thereby controlling the water injector to add water, avoiding the inconvenience caused by adding water when the water injector is not in place or exceeds the water adding position, and preventing the sensor from being triggered incorrectly, thereby improving the reliability of the water injector. The water injector is suitable for application in household appliances with automatic water adding, improving the convenience of water adding, and enhancing user satisfaction.

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

[0011] Beneficial effect: The limit ribs are arranged along the thickness direction of the plate body, which is convenient for cooperation with the limit ribs connected to the water injector or the torque transmission component of the water injector. The mechanical limit method is adopted, which has high reliability and will prevent the water injector from failing to accurately reach the water adding position.

[0012] In an optional embodiment, the positioning plate further includes:

[0013] The water injector is rotatably arranged in the mounting hole.

[0014] Beneficial effect: the water injector can be rotatably arranged in the mounting hole of the positioning plate, so as to realize the horizontal positioning of the water injector, and the connection and cooperation between the water injector and the transmission assembly are not affected.

[0015] In an optional embodiment, the positioning plate further includes:

[0016] A clamping claw is arranged on a side of the positioning plate away from the fixing portion and is located at the periphery of the mounting hole; the clamping claw is suitable for axially positioning the water injector.

[0017] Beneficial effect: The water injector is axially positioned by the claws to prevent the water injector from axial movement without affecting the rotation of the water injector. The limit is reliable and the structure is simple.

[0018] In an optional embodiment, the fixing portion includes:

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

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

[0021] In a second aspect, the present invention provides a water injector in-place control structure, comprising:

[0022] The positioning plate described in any one of the above items, wherein a sensing component is installed at the sensing position;

[0023] A limiting rib, arranged on the water injector or a transmission component of the water injector for transmitting torque;

[0024] The two limiting ribs are spaced apart along the circumference of the water injector, and the limiting retaining rib is located on the rotation path of the two limiting ribs; or, the two limiting retaining ribs are spaced apart and both are located on the rotation path of the limiting rib.

[0025] Beneficial effect: Two limit ribs (or two limit baffles), one corresponding to the initial position of the water injector, and the other corresponding to the water adding position of the water injector, achieve precise limiting, and then achieve precise positioning of the water injector, avoiding the situation where the water injector injects water when it is not in the water adding position; and also avoids the problem of water spilling caused by false triggering of the sensor.

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

[0027] A first limiting surface, adapted to block one of the limiting ribs;

[0028] The second limiting surface is opposite to the first limiting surface and is suitable for blocking another one of the limiting ribs.

[0029] Beneficial effect: The two limiting surfaces of the limiting retaining rib, which are separated from each other, serve as the in-place stop limiting surfaces of the two limiting ribs, thereby simplifying the structure.

[0030] In an optional implementation, the in-place control structure further includes:

[0031] The trigger part is arranged on the water injector or the transmission component; the movement path of the trigger part is at least partially located within the sensing range of the sensing component.

[0032] Beneficial effect: The triggering part of the control structure is in place, and the sensing component is triggered only after it is in place, thereby improving the detection reliability, being able to provide an accurate basis for judgment, and preventing false triggering.

[0033] In a third aspect, the present invention further provides a water adding device, comprising:

[0034] A water injector having an initial position and a water filling position;

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

[0036] In any of the above mentioned in-place control structures, the water injector is rotatably disposed on the positioning plate under the drive of the driving mechanism, and can be switched between the initial position and the water adding position.

[0037] Beneficial effect: Since the water adding device includes the in-place control structure of the present invention, it has the same technical effect as the in-place control structure, which will not be described in detail here.

[0038] In an optional embodiment, the transmission assembly includes:

[0039] The first connecting shaft, the two limiting ribs are arranged on the circumferential side of the first connecting shaft.

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

[0041] In a fourth aspect, the present invention provides a household appliance comprising the water adding device as described in any one of the above items.

[0042] Beneficial effect: Since the household appliance includes the water adding device of the present invention, it has the same technical effect as the water adding device, which will not be described in detail here.

[0043] In an optional embodiment, the household appliance is an electric kettle.

[0044] Beneficial effect: Since the electric kettle includes the water adding device of the present invention, it has the same technical effect as the water adding device, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related technologies, the drawings required for use in the specific embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0046] Figure 1 A structural diagram of a positioning plate according to an embodiment of the present invention;

[0047] Figure 2 This is a structural diagram of an in-position control structure of an embodiment of the present invention, and shows the state of the water injector when it is in the initial position;

[0048] Figure 3 This is a structural diagram of an in-position control structure of an embodiment of the present invention, and shows the state of the water injector when it is in the water injecting position;

[0049] Figure 4 This is a three-dimensional exploded structural diagram of an electric kettle according to an embodiment of the present invention, in which the kettle body is not shown;

[0050] Figure 5 An exploded structural diagram of a water injector according to an embodiment of the present invention;

[0051] Figure 6 It is a three-dimensional structural diagram of a lower water adding column according to an embodiment of the present invention;

[0052] Figure 7 A three-dimensional structural diagram of an upper cover according to an embodiment of the present invention;

[0053] Figure 8 It is a three-dimensional exploded structural diagram of a transmission assembly according to an embodiment of the present invention;

[0054] Fig. 9 This is a three-dimensional structural diagram of a first connecting shaft according to an embodiment of the present invention;

[0055] Fig.10 A three-dimensional structural diagram of a second connecting shaft according to an embodiment of the present invention;

[0056] Fig.11 A three-dimensional structural diagram of a third connecting shaft according to an embodiment of the present invention;

[0057] Fig.12 An exploded view of a connection structure between a transmission assembly, a water injection assembly and a motor according to an embodiment of the present invention;

[0058] Fig.13 A first-view stereoscopic structural diagram of an electric kettle according to an embodiment of the present invention;

[0059] Fig.14 A second-view stereoscopic structural diagram of an electric kettle according to an embodiment of the present invention;

[0060] Fig.15 This is a three-dimensional structural diagram of an electric kettle without a kettle body according to an embodiment of the present invention;

[0061] Fig.16 A three-dimensional structural diagram of a kettle holder according to an embodiment of the present invention;

[0062] Fig.17 A three-dimensional structural diagram of a fixing base of a kettle seat according to an embodiment of the present invention;

[0063] Fig.18 A three-dimensional structural diagram of a support ring of a kettle seat according to an embodiment of the present invention;

[0064] Fig.19 The present invention is a cross-sectional structural diagram of an electric kettle according to an embodiment of the present invention.

[0065] Description of reference numerals:

[0066] 1. Pot stand;

[0067] 11. fixing seat; 111. giving way notch; 112. sinking groove; 114. installing support ribs; 115. first installation part; 1151. positioning hole;

[0068] 12. Support ring; 121. Decorative eaves; 1211. Through hole; 1212. Decorative portion; 122. Ring body; 123. Second mounting portion; 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. Positioning rib; 2115. Disengagement window; 2116. Triggering part; 2117. Upper abutment surface; 212. Second connecting shaft; 2121. Transmission rod; 21211. Third transmission mating surface; 2122. Skirt edge; 21221, fourth transmission matching surface; 2123, pre-assembled part; 2124, lower abutment surface; 213, third connecting shaft; 2131, transmission cap; 21311, fifth transmission matching surface; 2132, input shaft; 21321, shaft hole; 214, pre-tightening mechanism; 215, anti-over-torque structure; 2151, convex rib; 21511, guide surface; 2152, convex block; 21521, guide inclined surface;

[0071] 22, lower water column; 221, pipe body; 2211, water inlet hole; 2212, matching structure; 22121, positioning rib; 2213, upper shaft shoulder; 2214, lower shaft shoulder; 2215, connecting column; 222, swing arm; 2221, water supply port; 2222, groove cavity; 2223, buckle position; 223, first connecting pipe; 224, first joint; 225, second joint;

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

[0073] 3. Positioning plate;

[0074] 30. Plate body; 31. Limiting rib; 32. Fixing part; 33. Mounting hole; 331. Matching rib;

[0075] 34. Clamping claw; 35. Mounting position; 36. Sensing position;

[0076] 4. Second connecting pipe;

[0077] 5. Motor;

[0078] 6. Water pump;

[0079] 7. Photoelectric switch;

[0080] 8. Pot body;

[0081] 81. Spout;

[0082] 82. Water injection port;

[0083] 83. Pot handle. DETAILED DESCRIPTION

[0084] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0085] In the description of the invention, it should be noted that, unless otherwise specified, the meaning of "plurality" is two or more; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0086] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0087] Combine the following Figures 1 to 19 , describing an embodiment of the present invention.

[0088] According to an embodiment of the present invention, on the one hand, Figure 1 As shown, a positioning plate 3 is provided, which is suitable for the water injector 2, and the positioning plate 3 includes:

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

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

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

[0092] A limiting rib 31 is provided on the positioning plate 3 to limit the rotation angle of the water injector 2, limiting its rotation range between the initial position and the water adding position. When the water adding position is reached, the in-place detection component installed on the sensing position 36 can be triggered, thereby controlling the water injector 2 to add water, avoiding the inconvenience caused by adding water when the water injector 2 is not in place or exceeds the water adding position, and preventing the sensor from being triggered incorrectly, thereby improving the reliability of the water injector 2, and being suitable for application in household appliances with automatic water adding, improving the convenience of water adding, 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 arranged along the thickness direction of the plate body 30, which is convenient for cooperating with the limiting rib 2114 on the water injector 2 or the torque transmission assembly 21 of the water injector 2. The mechanical limiting method is highly reliable and the water injector 2 will not fail to accurately reach the water adding position.

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

[0096] The water injector 2 is rotatably mounted in the mounting hole 33. A matching rib 331 is also disposed in the mounting hole 33.

[0097] The water injector 2 can be rotatably disposed 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 assembly 21 .

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

[0099] The claw 34 is disposed on a side of the positioning plate 3 away from the fixing portion 32 and is located at the periphery of the mounting hole 33 ; the claw 34 is suitable for axially positioning the water injector 2 .

[0100] The water injector 2 is axially positioned by the claw 34 to prevent the water injector 2 from axial movement without affecting the rotation of the water injector 2. The positioning is reliable and the structure is simple.

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

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

[0103] The fixing portion 32 includes a fixing groove, has a simple structure, and is easy to assemble and disassemble, thereby achieving fixed installation of the positioning plate 3 .

[0104] According to an embodiment of the present invention, on the other hand, a water injector in-place control structure is also provided, comprising:

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

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

[0107] The two limiting ribs 2114 are spaced apart along the circumference of the water injector 2 , and the limiting retaining rib 31 is located on the rotation path of the two limiting ribs 2114 ; or, the two limiting retaining ribs 31 are spaced apart and both are located on the rotation path of the limiting rib 2114 .

[0108] Two limit ribs 2114 (or two limit baffles 31), one corresponding to the initial position of the water injector 2, and the other corresponding to the water adding position of the water injector 2, realize precise limiting, and then realize the precise positioning of the water injector 2, avoiding the situation where the water injector 2 is not in the water adding position but injecting water; and also avoiding the problem of water spilling caused by false triggering of the sensor.

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

[0110] A first limiting surface, adapted to block one of the limiting ribs 2114;

[0111] The second limiting surface is opposite to the first limiting surface and is suitable for blocking another one of the limiting ribs 2114.

[0112] The two opposing limiting surfaces of the limiting rib 31 serve as the in-place stop limiting surfaces of the two limiting ribs 2114 , respectively, to simplify the structure.

[0113] In some embodiments, the in-position control structure further comprises:

[0114] The triggering part 2116 is arranged 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 in-position control structure triggers the sensing component only after it is in position, thereby improving detection reliability, providing accurate judgment basis, and preventing false triggering.

[0116] According to an embodiment of the present invention, on the other hand, a water adding device is provided, comprising:

[0117] A water injector 2, having an initial position and a water adding position;

[0118] A transmission assembly 21, through which the water injector 2 is transmission-connected to the driving mechanism;

[0119] In-position control structure, the water injector 2 can be rotatably arranged on the positioning plate 3 under the drive of the driving mechanism, and can be switched between the initial position and the water adding position.

[0120] Since the water adding device includes the in-place control structure of the present invention, it has the same technical effect as the in-place control structure, and will not be described in detail here.

[0121] In some embodiments, the water injector 2 includes an upper cover 23, a first joint 224, a first connecting pipe 223, a second joint 225, a joint sealing ring, a lower water column 22 sealing ring and a lower water column 22. One end of the first joint 224 is connected to the first connecting pipe 223, and the other end of the first joint 224 is a water outlet, and water can be added to the water injection port 82 of the pot cover. One end of the second joint 225 is connected to the first connecting pipe 223, and the other end of the second joint 225 is a water inlet, which is sealed with the lower water column 22 through two joint sealing rings. The first joint 224, the first connecting pipe 223 and the second joint 225 are installed together in the installation cavity of the lower water column 22, and the upper cover 23 is buckled with the rotary arm 222 of the lower water column 22 through the buckle 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 installed on the support ring 12, and the positioning plate 3 is fastened to the support ring 12 by two screws. A mounting hole 33 is opened in the middle of the positioning plate 3 and a clamping structure is provided on the periphery. The lower water column 22 passes through the mounting hole 33 and is axially limited by the clamping structure. Specifically, the clamping structure of the positioning plate 3 includes an upper limit surface and a lower limit surface, which cooperate with the upper shoulder 2213 and the lower shoulder 2214 of the lower water column 22 respectively to limit the lower water column 22 up and down. The lower water column 22 is provided with a sealing ring installation groove, and a sealing ring is provided between the support ring 12 and the lower water column 22 to prevent the entry of external water flow.

[0123] A transmission assembly 21 for transmitting torque is provided between the lower water column 22 and the motor 5, and the transmission assembly 21 includes a first connecting shaft 211, a second connecting shaft 212 and a third connecting shaft 213. The upper and lower ends of the first connecting shaft 211 are both opened, and the upper end of the first connecting shaft 211 is sleeved on the lower end of the lower water column 22. The first connecting shaft 211 and the lower water column 22 are respectively provided with polygonal matching surfaces, and a positioning rib 22121 is provided on the polygonal matching position of the lower water column 22, and a positioning groove 21121 is provided on the polygonal matching position of the first connecting shaft 211. The two are connected and transmitted through the polygonal matching position. The matching of the positioning rib 22121 and the positioning groove 21121 can realize the foolproof of the installation direction during assembly, and make the connection and transmission of the two more reliable. The second connecting pipe 4 connected to the water pump 6 at the lower end of the lower water column 22 is introduced from the access notch opened 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 and driven via a polygonal hole shaft.

[0124] An overtorque spring as a preload mechanism 214 is installed between the first connecting shaft 211 and the second connecting shaft 212. The upper end of the overtorque spring abuts against the upper abutting surface 2117 at the lower end of the first connecting shaft 211, and the lower end of the overtorque spring abuts against the lower abutting surface 2124 of the second connecting shaft 212. The second connecting shaft 212 is movably connected to the first connecting shaft 211 by a fastening screw. 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 convex point. The shaft hole 21321 at the lower end of the third connecting shaft 213 is interference-connected with the flat rotating shaft of the motor 5. When adding water, the motor 5 drives the third connecting shaft 213 to rotate, which in turn drives the second connecting shaft 212 to rotate, and then the second connecting shaft 212 drives the first connecting shaft 211 to rotate, and the first connecting shaft 211 drives the lower water adding column 22 to rotate above the water filling port 82 of the pot cover, and the water pump 6 is connected to the lower water adding column 22, and automatic water adding is achieved by controlling the opening of the water pump 6.

[0125] In order to prevent the motor 5 from being damaged by artificially bending the water injector 2 with great force, an over-torque protection structure is provided. The over-torque protection structure includes a third connecting shaft 213, an over-torque spring as a pre-tightening mechanism 214, and a second connecting shaft 212. A convex block 2152 with a guiding inclined surface 21521 is provided on the third connecting shaft 213, and a convex rib 2151 with a guiding inclined surface 21521 is provided on the second connecting shaft 212. Under normal circumstances, the over-torque spring presses the second connecting shaft 212 downward against the third connecting shaft 213, and the convex point on the third connecting shaft 213 drives the convex rib 2151 on the second connecting shaft 212 to transmit. Since the convex rib 2151 on the second connecting shaft 212 and the convex point on the third connecting shaft 213 are provided with inclined surface guides, when subjected to excessive external force, the second connecting shaft 212 will compress the over-torque spring and separate from the third connecting shaft 213 and idle, thereby forming an over-torque protection for the motor 5. The lower water adding column 22 is driven to rotate by the motor 5, and can rotate between the initial position and the water adding position.

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

[0127] A first connecting shaft 211, adapted to be drivingly connected to a component to be driven;

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

[0129] The second connecting shaft 212 is transmission-disposed between the first connecting shaft 211 and the third connecting shaft 213; a pre-tightening mechanism 214 is disposed 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] The anti-over-torque structure 215 is arranged 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 be separated from the third connecting shaft 213 along the anti-over-torque 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 driving mechanism to the second connecting shaft 212, and then transmits the kinetic energy to the component to be driven through the first connecting shaft 211 transmission-connected to the second connecting shaft 212, which can conveniently drive the component to be driven to rotate. Since an anti-over-torque 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 be separated from the third connecting shaft 213 along the anti-over-torque structure 215, and the torque transmission link is disconnected, thereby avoiding damage to the driving mechanism transmission-connected to the third connecting shaft 213, thereby achieving over-torque protection. In addition, a second connecting shaft 212 is arranged between the third connecting shaft 213 serving as the power input shaft 2132 and the first connecting shaft 211 serving as the power output shaft. When the transmission assembly 21 encounters axial separation due to torque, it will not affect the driven components, thereby preventing the driven components from axially moving and causing a bad experience for users.

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

[0133] The rib 2151 is disposed on one of the end surface of the second connecting shaft 212 and the end surface of the third connecting shaft 213;

[0134] The protrusion 2152 is disposed on the other of the end surface of the second connecting shaft 212 and the end surface of the third connecting shaft 213 ; the protrusion 2152 is in transmission cooperation with the rib 2151 .

[0135] The convex rib 2151 and the convex block 2152 are used for transmission connection, which serves as both a transmission structure and an anti-over-torque structure 215, has a reasonable design and a more compact structure.

[0136] In some embodiments, the rib 2151 is provided with a guide surface 21511 , and the protrusion 2152 is provided with a guide inclined surface 21521 . The rib 2151 and the protrusion 2152 can be separated from the guide inclined surface 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, the second connecting shaft 212 is disengaged from the third connecting shaft 213, and the transmission process is disconnected, thereby avoiding damage to the driving mechanism.

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

[0139] A first transmission matching surface 2112, adapted to be matched and connected with a component to be driven, and the first transmission matching surface 2112 is disposed in the first connecting cavity;

[0140] The second transmission mating surface 2113 is suitable for mating with the second connecting shaft 212 ; the second transmission mating surface 2113 is arranged 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 chamber 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, avoiding excessive axial movement of the second connecting shaft 212 when disengaging from the third connecting shaft 213, and improving the reliability of the transmission assembly 21.

[0142] As can be seen from the figure, a positioning groove 21121 is also provided on the first transmission matching surface 2112, which is suitable for matching and engaging with the positioning rib 22121 of the water injector 2 to prevent fooling. Two limiting ribs 2114 are also provided on the top peripheral side of the first transmission matching surface 2112. The two limiting ribs 2114 are arranged at intervals and can match with the limiting ribs 31 on the surrounding environmental parts to achieve the limiting of the rotation angle of the transmission component 21.

[0143] It should be noted that a make way window 2115 is also opened on the tube wall of the first connecting shaft 211, which can allow the water pipe to lead out of the second connecting pipe 4 to an external water supply device. The rotation of the first connecting shaft 211 will not drive the water pipe to move, and the water pipe will not be bent, thereby extending the service life of the water pipe.

[0144] In some embodiments, the first transmission mating surface 2112 and the second transmission mating surface 2113 both include polygonal mating surfaces. The transmission mating surface includes a polygonal mating surface, and the transmission is realized by meshing of polygons, which has a simple structure and high transmission reliability, and is suitable for torque transmission.

[0145] In some embodiments, Fig.10 As shown, the second connecting shaft 212 includes:

[0146] The transmission rod 2121 is provided with a third transmission matching surface 21211 matching with the first connecting shaft 211 on the top peripheral side close to the first connecting shaft 211;

[0147] The skirt 2122 is arranged at the bottom end of the transmission rod 2121 close to the third connecting shaft 213 ; the bottom end of the skirt 2122 is provided with a fourth transmission matching surface 21221 matching with the third connecting shaft 213 , and the pre-tightening mechanism 214 is pressed against the annular top surface of the 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, thereby facilitating the provision of an anti-over-torque structure 215; and it is also convenient to configure a 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, thereby achieving reliable transmission.

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

[0150] Specifically, the pre-assembled part 2123 is a screw, and the screw head is relatively large, which can support the second connecting shaft 212 in the hollow cavity of the first connecting shaft 211, and is convenient for installation. The second connecting shaft 212 can be overlapped at the annular step 2111 by screws.

[0151] The pre-assembled part 2123 is provided, and during the assembly process of the transmission assembly 21, the second connecting shaft 212 can be firstly provided in the cavity of the first connecting shaft 211 for preliminary positioning and fixing, so as to prevent the second connecting shaft 212 from falling, thereby improving the convenience of installation.

[0152] In some embodiments, Fig.11 As shown, the third transmission shaft includes:

[0153] The transmission cap 2131 is provided with a fifth transmission matching surface 21311 matched with the fourth transmission matching surface 21221; the anti-over-torque structure 215 is provided on the fourth transmission matching surface 21221 and the fifth transmission matching surface 21311;

[0154] The input shaft 2132 is arranged on a side of the transmission cap 2131 away from the fifth transmission matching surface 21311 ; a shaft hole 21321 is arranged on the input shaft 2132 , and the power output end of the driving mechanism can be matched and arranged in the shaft hole 21321 .

[0155] The power output end of the driving mechanism is directly arranged in the shaft hole 21321 of the shaft input shaft of the third transmission shaft, so the connection reliability is high and the transmission is stable.

[0156] According to an embodiment of the present invention, on the other hand, a water adding device is also provided, comprising:

[0157] A water injector 2 having a water supply port 2221;

[0158] Driving mechanism;

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

[0160] The water injector 2 is driven by the transmission assembly 21 of the present invention, and the water injector 2 is driven to rotate by the driving mechanism, so as to realize automatic water addition conveniently; when the water injector 2 encounters an obstacle or a large bending rotation torque, the transmission assembly 21 can rely on the anti-over-torque structure 215 to disconnect the transmission, avoid damage to the driving mechanism, and improve the safety and reliability of the water adding device. In addition, a second connecting shaft 212 is set between the third connecting shaft 213 as the power input shaft 2132 and the first connecting shaft 211 as the power output shaft. When the transmission assembly 21 encounters over-torque axial separation, it will not affect the components to be driven. The installation of the components to be driven is more secure, and it can also prevent the components to be driven from axial movement and cause a bad experience to the user.

[0161] Specifically, the driving mechanism includes a motor 5 .

[0162] According to an embodiment of the present invention, on another aspect, a household appliance is provided, comprising the above-mentioned water adding device.

[0163] The household appliance includes the water adding device of the present invention, and therefore has the same technical effect as the water adding device, which will not be described in detail here.

[0164] Household appliances may be electric kettles, electric tea stoves, cooking appliances, dishwashers, etc., appliances that can automatically add water or sinks that automatically fill with water, etc., and are not specifically limited here.

[0165] In some embodiments, Figure 13-Figure 19 As shown, the household appliance is an electric kettle, and the electric kettle includes:

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

[0167] The kettle seat 1 and the kettle body 8 are placed in the accommodating cavity of the kettle seat 1 ; the water injector 2 is rotatably arranged on the kettle seat 1 , and the water injection port 82 is located on the rotation path of the water supply port 2221 .

[0168] Since the electric kettle includes the water adding device of the present invention, if the water adding device encounters an obstacle during rotation or the external torque force is too large, the transmission component 21 will be disconnected, the drive mechanism will not be damaged, and the electrical safety is improved.

[0169] A specific embodiment of the present invention provides a kettle holder 1, comprising:

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

[0171] The mounting structure is at least partially disposed on the fixing seat 11 ; the mounting structure comprises a first mounting portion 115 , and the water injector 2 of the electric kettle can be disposed on the periphery of the fixing seat 11 through the first mounting portion 115 .

[0172] The fixing base 11 of the kettle holder 1 forms a cylindrical structure with an open top, and the kettle body 8 of the electric kettle can be placed in the inner cavity of the fixing base 11 for heating. Since the water injector 2 is arranged on the periphery of the fixing base 11 through the first mounting portion 115, no matter from which direction the kettle body 8 is taken or placed, there will be no interference with the water injector 2, thereby improving convenience and providing a better user experience. Moreover, a hole can be opened on the placement table of the electric kettle, and the fixing base 11 can be directly sunk below the placement table to reduce the occupied space on the table. Since the kettle body 8 is accommodated in the inner cavity of the fixing base 11, the surface of the kettle body 8 is isolated, thereby avoiding burns caused by accidentally touching the high-temperature kettle body 8, and the kettle body 8 is not easily tipped over by external force, thereby improving safety of use, especially reducing the risk of burns to children.

[0173] Specifically, the first mounting portion 115 includes a positioning ear arranged at the bottom of the side wall of the fixing seat 11 , and a positioning hole 1151 is opened on the positioning ear to facilitate the installation and positioning of the water injector 2 .

[0174] In some embodiments, the kettle holder 1 further comprises:

[0175] The support ring 12 is arranged at the opening of the fixing seat 11 ; part of the mounting structure is arranged on the support ring 12 .

[0176] A support ring 12 is provided at the opening of the fixing seat 11, and the transmission assembly 21 of the water injector 2 is hidden under the support ring 12, thereby improving the aesthetics; and part of the mounting structure can be provided on the support ring 12, thereby improving the convenience of assembling the parts of the electric kettle.

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

[0178] The ring body 122 is a tubular structure with two ends open;

[0179] The decorative eaves 121 are arranged at the first end of the ring body 122, and the support ring 12 is overlapped on the fixing seat 11 through the decorative eaves 121; the second end of the ring body 122 extends to the inner cavity of the fixing seat 11; the decorative eaves 121 are provided with a through hole 1211 for the water injector 2 to pass through.

[0180] The support ring 12 is overlapped on the fixing seat 11 through the decorative eaves 121 at the first end of the ring body 122; the second end of the ring body 122 extends to the inner cavity of the fixing seat 11, and the decorative eaves 121 plays a decorative role, shielding the fixing seat 11 and the parts installed on the pot seat 1, which not only improves the aesthetics, but also plays a certain protective role.

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

[0182] The mounting structure arranged at the bottom side of the decorative eaves 121 can facilitate the positioning and fixing of the components and other devices of the water injector 2, effectively utilize the space, and improve the connection reliability.

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

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

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

[0186] A recess 111 is provided at the edge of the fixing seat 11 , through which the spout 81 of the kettle body 8 can be extended. This can reduce the volume of the kettle seat 1 on the one hand, and facilitate the discharge and diffusion of steam on the other hand.

[0187] In some embodiments, a making way decorative portion 1212 is formed on the support ring 12 corresponding to the making way notch 111 .

[0188] Corresponding to the clearance notch 111, a sunken clearance decorative portion 1212 is provided on the support ring 12, which also plays a role of shielding and decoration, prevents dust and foreign matter from entering the gap, and can improve the overall appearance and aesthetics.

[0189] In some embodiments, Figure 17-Figure 18As shown, the fixing seat 11 is a cylindrical structure, and a notch 111 is provided at the edge of the opening of the fixing seat 11 to make way for the spout 81. The side wall of the fixing seat 11 is provided with a sink 112, and the bottom surface of the sink 112 is provided with a through slot; the side wall of the ring body 122 of the support ring 12 is provided with a mounting column 124, and the mounting column 124 is correspondingly arranged in the sink 112 and the bottom end of the mounting column 124 extends through the slot. A plurality of mounting support ribs 114 are distributed on the bottom surface of the inner cavity of the fixing seat 11, so as to provide support for the support ring 12 and reserve installation space for the electric heating component.

[0190] In some embodiments, the transmission assembly 21 is hidden in the kettle base 1 .

[0191] The moving component is hidden in the pot base 1, has a small size, does not take up space on the table, and is more beautiful.

[0192] In some embodiments, the electric kettle is further provided with a device for detecting the position of the water injector 2. The device for detecting the position of the water injector 2 comprises:

[0193] The photoelectric switch 7 is connected to the controller of the electric kettle; the controller is also connected to the driving mechanism; the photoelectric switch 7 is arranged at the mounting position 35 of the positioning plate;

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

[0195] When the transmission assembly 21 rotates to a specific position (i.e., the corresponding position when the water supply port 2221 rotates to the top of the water injection port 82), the trigger structure will move between the transmitting part and the receiving part of the photoelectric switch 7, blocking the light transmission between the transmitting part and the receiving part, and the photoelectric switch 7 will feedback a signal to the controller. After the controller obtains the signal, it controls the driving mechanism to stop, realizing automatic in-place detection and control. The controller is also connected to the water pump 6 or the water supply switch, and controls the driving mechanism to stop while controlling the water pump 6 to start or the water supply switch to open, and water is transported to the water supply port 2221 through the water supply device to automatically inject water into the water injection port 82.

[0196] The water injector 2 of the water adding device includes a lower water adding column 22 and an upper cover 23. The structure of the upper cover 23 is shown in FIG. Figure 7 The rotary arm 222 of the lower water filling column 22 is provided with a buckle position 2223, and the upper cover 23 is provided with a buckle 231. The upper cover 23 is detachably connected to the rotary arm 222 through the buckle 231 and the buckle position 2223. The buckle 231 is engaged with the buckle position 2223, so that the upper cover 23 is detachably mounted on the rotary arm 222 of the lower water filling column 22, which is convenient for disassembly and assembly.

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

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

[0199] The swing arm 222 is arranged at the water outlet end of the pipe body 221; the swing arm 222 is a groove-shaped structure with an open top surface, a water supply port 2221 is arranged at the bottom side of the swing arm 222, and a water supply channel is formed between the water inlet hole 2211 and the water supply port 2221;

[0200] A matching structure 2212 is formed on the peripheral side of the pipe body 221 near its water inlet end. The matching structure 2212 is suitable for connecting with the driving mechanism through the transmission component 21. The driving mechanism can drive the lower water adding column 22 to rotate so that the water supply port 2221 moves to the top of the water-using device.

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

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

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

[0204] The first joint 224 is disposed in the groove cavity 2222 of the rotary arm 222; the first end of the first joint 224 is connected to an end of the first connecting pipe 223 close to the water supply port 2221, and the second end of the first joint 224 is connected to the water supply port 2221;

[0205] The second joint 225, part of the second joint 225 is arranged in the groove cavity 2222 of the rotary arm 222; the first end of the second joint 225 is connected to the end of the first connecting pipe 223 close to the pipe body 221, and the second end of the second joint 225 is connected to the pipe body 221 and connected to the water inlet hole 2211.

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

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

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

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

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

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

[0212] The positioning rib 22121 or the positioning groove 21121 is arranged at the matching structure 2212 , and is suitable for matching and connecting with the positioning groove 21121 or the positioning rib 22121 on the transmission assembly 21 .

[0213] One of the lower water adding column 22 and the transmission assembly 21 is provided with a positioning rib 22121, and the other one is provided with a positioning groove 21121, which can prevent mistakes during the installation process and improve the 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, and the motor 5 drives the first connecting shaft 211 and the lower water adding column 22 to rotate through transmission. A triggering part 2116 is provided on the first connecting shaft 211. When the lower water adding column 22 rotates to the top of the water injection port 82, the triggering part 2116 of the first connecting shaft 211 just rotates into the slot sensing part of the photoelectric switch 7. The photoelectric switch 7 receives a signal that the lower water adding column 22 rotates to the right position, and transmits it to the control unit of the electric kettle, controls the motor 5 to stop rotating, and controls the water pump 6 to start working to add water into the kettle.

[0215] The positioning plate 3 is provided with a limit stop rib, and the first connection shaft 211 is provided with a first limit rib 2114 and a second limit rib 2114. When the water adding column is in the initial position, the first limit rib 2114 cooperates with the front side of the limit stop rib 31, and when the water adding column is in the water adding position, the second limit rib 2114 cooperates with the back side of the limit stop rib 31, thereby limiting the rotation angle of the lower water adding column 22 between the initial position and the water adding position. After the water adding is completed, the lower water adding column 22 returns to the initial position.

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

Claims

1. A positioning plate, characterized in that: Applicable to a water injector (2), the positioning plate (3) comprises: The plate body (30) is provided with a fixing portion (32) matching with the mounting surface of the positioning plate (3); A sensing position (36), arranged on a side of the plate body (30) away from the fixing portion (32), suitable for installing a position detection component of the water injector (2); A limiting retaining rib (31) is arranged on a side of the plate body (30) away from the fixing portion (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) further comprises: A mounting hole (33), wherein the water injector (2) is rotatably disposed in the mounting hole (33).

4. The positioning plate according to claim 3, characterized in that: The positioning plate (3) further comprises: A claw (34) is arranged on a side of the positioning plate (3) away from the fixing portion (32) and is located outside the mounting hole (33); the claw (34) is suitable for axially positioning the water injector (2).

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

6. A water injector in-place control structure, characterized in that: include: The positioning plate (3) according to any one of claims 1 to 5, wherein a sensing component is installed at the sensing position (36); A limiting rib (2114) is arranged on the water injector (2) or a transmission component (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 retaining rib (31) is located on the rotation path of the two limiting ribs (2114); or, the two limiting retaining ribs (31) are arranged at intervals and are both located on the rotation path of the limiting rib (2114).

7. The in-position control structure according to claim 6, characterized in that: The two limiting ribs (2114) are arranged on the transmission assembly (21); the limiting rib (31) comprises: A first limiting surface, adapted to block one of the limiting ribs (2114); The second limiting surface is opposite to the first limiting surface and is suitable for blocking another limiting rib (2114).

8. The in-position control structure according to claim 6 or 7, characterized in that: The in-place control structure also includes: A triggering part (2116) is arranged 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.

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

10. The water adding device according to claim 9, characterized in that: The transmission assembly (21) comprises: A first connecting shaft (211), wherein the two limiting ribs (2114) are arranged on the circumferential side of the first connecting shaft (211).

11. A household appliance, characterized in that: Includes the water adding device according to claim 9 or 10.

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

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