Positioning plate fixing structure, water adding device and household appliance

Abstract

The utility model relates to the technical field of household appliances, and discloses a positioning plate fixing structure, a water adding device and a household appliance. The positioning plate fixing structure comprises a positioning plate which comprises a plate body, a fixing part and a positioning structure, wherein the fixing part and the positioning structure are arranged on the plate body; the supporting structure is provided with a mounting part, the mounting part is connected with the fixing part in a matched mode, and at least the positioning plate is mounted on the equipment body; and the water injector is rotationally limited on the positioning plate by the positioning structure. The installation part of the supporting structure is connected with the fixing part on the positioning plate in a matched mode, the positioning plate is at least installed on the equipment body, then the water injector is rotationally limited between the initial position and the water adding position through the positioning structure on the positioning plate, the installation structure is simple, convenient assembly of the water injector is achieved, and the assembly efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to domestic appliance technical field, concretely relates to a positioning plate fixed structure, water adding device and domestic appliance. BACKGROUND

[0002] In order to facilitate water adding, some electric tea stoves, electric kettles and kitchen appliances on the market are equipped with automatic water adding function. Most of these automatic water adding devices adopt rotatable water filler, and the water filler is driven to rotate to the upper side of the set water inlet to complete water adding when water adding is needed.

[0003] In related technologies, in order to fix and limit the water filler and ensure that the water filler can realize rotary water adding, the connecting structure of the water filler and the device main body is relatively complex. And because the limiting and fixing structure of the water filler is relatively complex, the water filler is inconvenient to assemble, and the whole machine assembly efficiency is low. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model provides a positioning plate fixed structure, water adding device and domestic appliance to solve the problem that the limiting and fixing structure of the water filler is relatively complex, leading to inconvenient assembly of the water filler.

[0005] In a first aspect, the utility model provides a positioning plate fixed structure, comprising:

[0006] A positioning plate comprises a plate main body and a fixing part and a positioning structure arranged on the plate main body.

[0007] A support structure is provided with a mounting part, and the mounting part is matched and connected with the fixing part, and the positioning plate is at least mounted on the device main body.

[0008] A water filler is rotatably limited on the positioning plate by the positioning structure, and the water filler has an initial position and a water adding position.

[0009] Advantages: the mounting part of the support structure is matched and connected with the fixing part on the positioning plate, and the positioning plate is at least mounted on the device main body, so that the water filler is rotatably limited between the initial position and the water adding position by the positioning structure on the positioning plate, and the convenient assembly of the water filler is realized, and the structure is simple and the assembly efficiency is high.

[0010] In an optional embodiment, the positioning structure comprises:

[0011] A mounting hole is arranged, and the water filler is positioned in the mounting hole in the horizontal direction.

[0012] A clamping jaw is formed by extending from the plate main body and is clamped on the water filler in the axial direction.

[0013] Beneficial effects: The water injector is rotatably arranged in the mounting hole of the positioning plate, realizing the horizontal positioning of the water injector, and not affecting the connection and cooperation of the water injector and the transmission assembly.

[0014] In an alternative embodiment, the fixing part comprises at least two fixing grooves, the mounting part comprises at least two fixing columns, and the positioning plate is clamped on the fixing columns of the support structure through the fixing grooves.

[0015] Beneficial effects: The fixing part comprises a fixing groove, which is simple in structure, convenient to disassemble and assemble, and realizes the fixed mounting of the positioning plate.

[0016] In an alternative embodiment, the water injector comprises a lower water feeding column, and the lower water feeding column comprises:

[0017] A pipe body provided with an upper shaft shoulder and a lower shaft shoulder matched with the positioning structure;

[0018] A rotating arm is arranged at the top end of the pipe body in communication and can swing with the rotation of the pipe body.

[0019] Beneficial effects: The lower water feeding column comprises a pipe body and a rotating arm, the upper shaft shoulder and the lower shaft shoulder on the pipe body are convenient for matched connection with the positioning structure on the positioning plate, the rotating arm arranged in communication with the pipe body can swing to the water feeding position with the rotation of the pipe body, which is simple in structure, convenient to assemble, improves the assembly efficiency, and is also convenient for maintenance.

[0020] In an alternative embodiment, the positioning structure further comprises:

[0021] A sensing position is arranged on the side of the plate body away from the fixing part, and is suitable for installing a position detection component of the water injector;

[0022] A limiting stop rib is arranged on the side of the plate body away from the fixing part, and is suitable for limiting the rotation angle of the water injector.

[0023] Beneficial effects: The limiting stop rib is arranged on the positioning plate to limit the rotation angle of the water injector, and the rotation range is limited between the initial position and the water feeding position. When reaching the water feeding position, the position detection component installed on the sensing position can be triggered, thereby controlling the water feeding of the water injector, avoiding the inconvenience caused by water feeding without reaching the position or exceeding the water feeding position, and preventing the mis-triggering of the sensor. The reliability of the water injector is improved, which is suitable for application to automatic water feeding household appliances, improves the water feeding convenience, and improves the user's satisfaction.

[0024] In an alternative embodiment, the limiting stop rib comprises:

[0025] A first limiting surface corresponding to the initial position of the water injector;

[0026] The second limiting surface, which is opposite to the first limiting surface, corresponds to a water adding position of the water injector.

[0027] Beneficial effect: the two limiting surfaces opposite to the limiting ribs serve as the initial position and the water adding position respectively, thus simplifying the structure.

[0028] In a second aspect, the utility model also provides a water adding device, which comprises:

[0029] The positioning plate fixing structure according to any one of the above;

[0030] The driving mechanism;

[0031] The transmission assembly, the driving mechanism is connected with the water injector through the transmission assembly, so as to drive the water injector to rotate between the initial position and the water adding position.

[0032] Beneficial effect: since the water adding device comprises the positioning plate fixing structure of the utility model, it has the same technical effects as the positioning plate fixing structure, which will not be repeated here.

[0033] In an optional embodiment, the transmission assembly comprises:

[0034] The first transmission shaft is provided with two limiting ribs matched with the positioning structure at intervals along the circumferential side, one of which corresponds to the initial position, and the other of which corresponds to the water adding position.

[0035] Beneficial effect: the limiting ribs are arranged on the transmission assembly, thus improving the assembly convenience of the water injector.

[0036] In a third aspect, the utility model also provides a household appliance, which comprises:

[0037] The device main body;

[0038] The positioning plate fixing structure according to any one of the above or the water adding device according to any one of the above;

[0039] The base device, the supporting structure is arranged on the base device, and the mounting portion is formed by extending the supporting structure towards the positioning plate.

[0040] Beneficial effect: since the household appliance comprises the positioning plate fixing structure of the utility model or the water adding device of the utility model, it has the same technical effects as the positioning plate fixing structure, which will not be repeated here.

[0041] In an optional embodiment, the household appliance is an electric kettle.

[0042] Beneficial effects: since the electric kettle comprises the positioning plate fixing structure of the utility model or the water adding device of the utility model, the same technical effects as the positioning plate fixing structure are achieved, and details are not repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical scheme in the specific embodiment or the related art of the present utility model, the drawings needed to be used in the specific embodiment or the related art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present utility model, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0044] Figure 1 A structure diagram of a positioning plate according to an embodiment of the present utility model;

[0045] Figure 2 A structure diagram of a positioning plate fixing structure according to an embodiment of the present utility model, in which the water injector is located at the initial position;

[0046] Figure 3 A structure diagram of another positioning plate fixing structure according to an embodiment of the present utility model, in which the water injector is located at the water injection position;

[0047] Figure 4 A three-dimensional exploded structure diagram of an electric kettle according to an embodiment of the present utility model, in which the kettle body is not shown;

[0048] Figure 5 An exploded structure diagram of a water injector according to an embodiment of the present utility model;

[0049] Figure 6 A three-dimensional structure diagram of a lower water adding column according to an embodiment of the present utility model;

[0050] Figure 7 A three-dimensional structure diagram of an upper cover according to an embodiment of the present utility model;

[0051] Figure 8 A three-dimensional exploded structure diagram of a transmission assembly according to an embodiment of the present utility model;

[0052] Figure 9 A three-dimensional structure diagram of a first connecting shaft according to an embodiment of the present utility model;

[0053] Figure 10 A three-dimensional structure diagram of a second connecting shaft according to an embodiment of the present utility model;

[0054] Figure 11 A three-dimensional structure diagram of a third connecting shaft according to an embodiment of the present utility model;

[0055] Figure 12The utility model discloses a transmission assembly and water injection and motor's connection structure explosion map of an embodiment of the utility model;

[0056] Figure 13 The utility model discloses a first perspective stereogram of electric kettle of an embodiment of the utility model;

[0057] Figure 14 The utility model discloses a second perspective stereogram of electric kettle of an embodiment of the utility model;

[0058] Figure 15 The utility model discloses a stereogram after the kettle body of electric kettle of an embodiment of the utility model is removed;

[0059] Figure 16 The utility model discloses a stereogram of kettle seat of an embodiment of the utility model;

[0060] Figure 17 The utility model discloses a stereogram of fixed seat of kettle seat of an embodiment of the utility model;

[0061] Figure 18 The utility model discloses a stereogram of support ring of kettle seat of an embodiment of the utility model;

[0062] Figure 19 The utility model discloses a sectional structure diagram of electric kettle of an embodiment of the utility model.

[0063] Mark explanation:

[0064] 1, kettle seat;

[0065] 11, fixed seat; 111, let the gap; 112, sink groove; 114, install support rib; 115, first installation part; 1151, positioning hole; 12, support ring; 121, decorate eave; 1211, through -hole; 1212, let the decoration department; 122, ring main body; 123, second installation part; 124, install column;

[0066] 2, water injection device;

[0067] 21, transmission assembly; 211, first connecting shaft; 2111, annular step; 2112, first transmission matching surface; 21121, positioning groove; 2113, second transmission matching surface; 2114, limiting rib; 2115, accommodation window; 2116, triggering part; 2117, upper abutting surface; 212, second connecting shaft; 2121, transmission rod; 21211, third transmission matching surface; 2122, skirt; 21221, fourth transmission matching surface; 2123, preloading part; 2124, lower abutting 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-tightening structure; 2151, convex rib; 21511, guide surface; 2152, convex block; 21521, guide inclined surface; 22, lower water adding column; 221, pipe main body; 2211, water inlet hole; 2212, matching structure; 22121, limiting rib; 2213, upper shaft shoulder; 2214, lower shaft shoulder; 2215, connecting column; 222, rotating arm; 2221, water supply opening; 2222, groove cavity; 2223, buckle position; 223, first connecting pipe; 224, first connector; 225, second connector; 23, upper cover; 231, buckle;

[0068] 3, positioning plate;

[0069] 30, plate main body; 31, limiting rib; 32, fixed part; 33, mounting hole; 331, matching rib; 34, clamping jaw; 35, mounting position; 36, sensing position;

[0070] 4, second connecting pipe;

[0071] 5, motor;

[0072] 6, water pump;

[0073] 7, photoelectric switch;

[0074] 8, kettle body;

[0075] 81, kettle spout; 82, water filling opening; 83, kettle handle. DETAILED DESCRIPTION

[0076] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0077] In the description of the utility model, it needs to be explained that, unless otherwise specified, the meaning of "multiple" is two or more than two; The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0078] In the description of the utility model, it also needs to be explained that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; It can be mechanically connected, or it can be electrically connected; It can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0079] The embodiments of the utility model will be described below in combination with Figures 1 to 19 .

[0080] According to the embodiments of the utility model, on the one hand, as shown in Figure 2 and Figure 3 , a positioning plate fixing structure is provided, comprising:

[0081] The positioning plate 3 comprises a plate main body 30 and a fixing portion 32 and a positioning structure provided on the plate main body 30;

[0082] The support structure is provided with a second mounting portion 123, the second mounting portion 123 is matched and connected with the fixing portion 32, and the positioning plate 3 is at least mounted on the equipment main body;

[0083] The water injector 2 is rotatably limited on the positioning plate 3 by the positioning structure; The water injector 2 has an initial position and a water adding position.

[0084] The second mounting portion 123 of the support structure is matched and connected with the fixing portion 32 on the positioning plate 3, and the positioning plate 3 is at least mounted on the equipment main body, so that the water injector 2 is rotatably limited between the initial position and the water adding position by the positioning structure on the positioning plate 3, realizing convenient assembly of the water injector 2, simple structure and high assembly efficiency.

[0085] In some embodiments, as shown in Figure 1 , a positioning plate 3 suitable for positioning of a water injector 2 is provided, comprising:

[0086] The plate body 30 is provided with a fixed part 32 matched with the mounting surface of the positioning plate 3.

[0087] The induction site 36 is arranged on the side of the plate body 30 away from the fixed part 32, and is suitable for installing the in-place detection component of the water injector 2.

[0088] The limiting stop rib 31 is arranged on the side of the plate body 30 away from the fixed part 32, and is suitable for limiting the rotation angle of the water injector 2.

[0089] The limiting stop rib 31 is arranged on the positioning plate 3 to limit the rotation angle of the water injector 2, and the rotation range is limited between the initial position and the water filling position. When reaching the water filling position, the in-place detection component installed on the induction site 36 can be triggered, thereby controlling the water injector 2 to fill water, avoiding the inconvenience caused by the water injector 2 not being in place or exceeding the water filling position, and preventing the sensor from being triggered by mistake, thereby improving the reliability of the water injector 2 and being suitable for application to automatic water filling household appliances, improving the water filling convenience, and improving the user's satisfaction.

[0090] In some embodiments, the plate body 30 extends in the thickness direction to form the limiting stop rib 31.

[0091] The limiting stop rib 31 is arranged in 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, and adopts a mechanical limiting mode, which is high in reliability and cannot cause the water injector 2 to fail to accurately reach the water filling position.

[0092] In some embodiments, the positioning plate 3 further comprises:

[0093] The mounting hole 33 is arranged in the peripheral part of the plate body 30, and the water injector 2 is rotatably arranged in the mounting hole 33.

[0094] The water injector 2 is rotatably arranged in the mounting hole 33 of the positioning plate 3, thereby realizing the horizontal positioning of the water injector 2 and not affecting the connection and cooperation of the water injector 2 and the transmission assembly 21.

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

[0096] The claw 34 is arranged on the side of the positioning plate 3 away from the fixed part 32 and located in the peripheral part of the mounting hole 33, and is suitable for axially positioning the water injector 2.

[0097] The claw 34 axially positions the water injector 2, thereby preventing the water injector 2 from axially moving, and not affecting the rotation of the water injector 2, which is reliable in limiting and simple in structure.

[0098] In some embodiments, the fixing part 32 comprises:

[0099] A fixing groove is adapted to be clamped with the fixing column on the mounting surface.

[0100] The fixing part 32 comprises a fixing groove, which is simple in structure, convenient to disassemble and assemble, and realizes the fixed installation of the positioning plate 3.

[0101] The utility model discloses the in -place control structure of water injector, including:

[0102] The positioning plate 3 is installed with sensing part at the sensing position 36;

[0103] The limiting rib 2114 is arranged in the water injector 2 or the transmission assembly 21 for transmitting torque of the water injector 2;

[0104] Two limiting ribs 2114 are arranged along the circumference of the water injector 2, and the limiting stop rib 31 is located on the rotation path of the two limiting ribs 2114;Or, two limiting stop ribs 31 are arranged at intervals, and are located on the rotation path of the limiting rib 2114.

[0105] Two limiting ribs 2114 (or two limiting stop ribs 31) correspond to the initial position of the water injector 2, and the other corresponds to the water filling position of the water injector 2, which realizes accurate limiting and further realizes the accurate positioning of the water injector 2, avoids the water injection of the water injector 2 not in the water filling position, and also avoids the water spilling problem caused by the false triggering of the sensor.

[0106] In some embodiments, the two limiting ribs 2114 are arranged in the transmission assembly 21;The limiting stop rib 31 comprises:

[0107] The first limiting surface is adapted to block one of the limiting ribs 2114;

[0108] The second limiting surface is opposite to the first limiting surface and is adapted to block the other limiting rib 2114.

[0109] The two limiting surfaces of the limiting stop rib 31 are opposite, and are respectively used as the in-place stop limiting surfaces of the two limiting ribs 2114, which simplifies the structure.

[0110] In some embodiments, the in-place control structure further comprises:

[0111] The trigger part 2116 is arranged in the water injector 2 or the transmission assembly 21;The movement path of the trigger part 2116 is at least partially located in the sensing range of the sensing part.

[0112] The trigger part 2116 of the in-place control structure triggers the sensing part only after reaching the in-place position, improves the detection reliability, can provide accurate judgment basis, and will not appear the false triggering condition.

[0113] According to the embodiment of the utility model, still one aspect provides a water adding device, including:

[0114] The water injector 2 has an initial position and a water adding position;

[0115] The transmission assembly 21 is in transmission connection with the driving mechanism;

[0116] The water injector 2 is rotatably arranged on the positioning plate 3 under the driving of the driving mechanism and can be switched between the initial position and the water adding position.

[0117] The water adding device includes the in-place control structure of the utility model, so it has the same technical effects as the in-place control structure, which will not be repeated here.

[0118] 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, joint sealing rings, a lower water adding column 22 sealing ring and the lower water adding column 22. One end of the first joint 224 is connected with the first connecting pipe 223, and the other end of the first joint 224 is a water outlet end, which can add water to the water inlet 82 of the kettle cover. One end of the second joint 225 is connected with the first connecting pipe 223, and the other end of the second joint 225 is a water inlet end, which is sealed with the lower water adding column 22 through two joint sealing rings. The first joint 224, the first connecting pipe 223 and the second joint 225 are installed in the lower water adding column 22 installation cavity together, and the upper cover 23 is buckled with the rotating arm 222 of the lower water adding column 22 through the buckle 231. The lower end of the lower water adding column 22 is communicated with the water outlet end of the water pump 6 through the second connecting pipe 4.

[0119] The positioning plate 3 is installed on the support ring 12, and the positioning plate 3 and the support ring 12 are fastened and connected through two screws. The positioning plate 3 is provided with a clamping structure around the installation hole 33 in the middle. The lower water adding column 22 passes through the installation hole 33 and is axially limited by the clamping structure. Specifically, the clamping structure of the positioning plate 3 includes an upper limiting surface and a lower limiting surface, which are matched with the upper shaft shoulder 2213 and the lower shaft shoulder 2214 of the lower water adding column 22 respectively, and the lower water adding column 22 is limited up and down. The lower water adding column 22 is provided with a sealing ring installation groove, and the sealing ring is arranged between the support ring 12 and the lower water adding column 22 to prevent external water flow from entering.

[0120] The lower water column 22 and the motor 5 are provided with a transmission assembly 21 for transmitting torque, and the transmission assembly 21 comprises 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 holed, 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 the polygonal matching surface of the lower water column 22 is provided with a positioning rib 22121, and the polygonal matching surface of the first connecting shaft 211 is provided with a positioning groove 21121, the two are connected in transmission through the polygonal matching surfaces, the cooperation of the positioning rib 22121 and the positioning groove 21121 can prevent the installation direction from being mistaken during assembly, and the connection in transmission of the two is more reliable. The lower end of the lower water column 22 and the second connecting pipe 4 connected with the water pump 6 are 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 in transmission through polygonal hole shafts.

[0121] A torsion spring as a pre-tightening mechanism 214 is mounted between the first connecting shaft 211 and the second connecting shaft 212, the upper end of the torsion spring abuts against the upper abutting surface 2117 of the lower end of the first connecting shaft 211, the lower end of the torsion spring abuts against the lower abutting surface 2124 of the second connecting shaft 212, and the second connecting shaft 212 is movably connected on the first connecting shaft 211 through a fastening screw. The lower end of the second connecting shaft 212 is provided with a transmission convex rib 2151, the third connecting shaft 213 is provided with a transmission convex point, and the lower end shaft hole 21321 of the third connecting shaft 213 is connected in interference with the flat shaft of the motor 5. When adding water, the motor 5 drives the third connecting shaft 213 to rotate, thereby driving the second connecting shaft 212 to rotate, and further driving the first connecting shaft 211 to rotate through the second connecting shaft 212, and driving the lower water column 22 to rotate above the kettle cover water inlet 82 through the first connecting shaft 211, and the water pump 6 is connected with the lower water column 22, and automatic water adding is realized by controlling the opening of the water pump 6.

[0122] To avoid the damage of the motor 5 caused by the human force to move the water injector 2, the over-torque protection structure is arranged. The over-torque protection structure comprises the third connecting shaft 213, the over-torque spring as the pre-tightening mechanism 214 and the second connecting shaft 212. The third connecting shaft 213 is provided with the protrusion 2152 with the guide inclined surface 21521, and the second connecting shaft 212 is provided with the protrusion 2151 with the guide inclined surface 21521. Normally, the over-torque spring presses the second connecting shaft 212 downward against the third connecting shaft 213, and the protrusion on the third connecting shaft 213 drives the protrusion 2151 on the second connecting shaft 212. Since the protrusion 2151 on the second connecting shaft 212 and the protrusion on the third connecting shaft 213 are provided with the inclined guide surface, when the external force is too large, the second connecting shaft 212 will compress the over-torque spring and separate from the third connecting shaft 213 to idle, thereby forming the over-torque protection for the motor 5. The motor 5 drives the lower water filling column 22 to rotate, so that the rotation can be performed between the initial position and the water filling position.

[0123] In some embodiments, a transmission assembly 21 comprises:

[0124] The first connecting shaft 211 is adapted to be in transmission connection with the to-be-driven component;

[0125] The third connecting shaft 213 is adapted to be in transmission connection with the power output end of the driving mechanism;

[0126] The second connecting shaft 212 is arranged in transmission between the first connecting shaft 211 and the third connecting shaft 213. The pre-tightening mechanism 214 is arranged between the first connecting shaft 211 and the second connecting shaft 212, and can press the second connecting shaft 212 against the third connecting shaft 213;

[0127] The over-torque protection structure 215 is arranged on the transmission cooperation 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 separate from the third connecting shaft 213 along the over-torque protection structure 215.

[0128] As Figure 4 and Figure 8As shown, the transmission assembly 21 comprises a first connecting shaft 211, a second connecting shaft 212 and a third connecting shaft 213, the third connecting shaft 213 transmits kinetic energy of the driving mechanism to the second connecting shaft 212, and then transmits the kinetic energy to the to-be-driven component through the first connecting shaft 211 in transmission connection with the second connecting shaft 212, so as to conveniently drive the to-be-driven component to rotate. Since the anti-over-torque structure 215 is arranged on the transmission matching 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, the torque transmission link is disconnected, damage to the driving mechanism in transmission connection with the third connecting shaft 213 is avoided, and over-torque protection is realized. Moreover, the second connecting shaft 212 is arranged between the third connecting shaft 213 as a power input shaft 2132 and the first connecting shaft 211 as a power output shaft. When the transmission assembly 21 is separated in the axial direction under over-torque, the to-be-driven component is not affected, and axial movement of the to-be-driven component is prevented, thereby avoiding a bad experience for the user.

[0129] In some embodiments, the anti-over-torque structure 215 comprises:

[0130] a convex rib 2151 arranged on one of the end face of the second connecting shaft 212 and the end face of the third connecting shaft 213;

[0131] a convex block 2152 arranged on the other of the end face of the second connecting shaft 212 and the end face of the third connecting shaft 213; the convex block 2152 is in transmission connection with the convex rib 2151.

[0132] The convex rib 2151 and the convex block 2152 are in transmission connection, which serves as both a transmission structure and an anti-over-torque structure 215, and the design is reasonable and the structure is more compact.

[0133] In some embodiments, the convex rib 2151 is provided with a guide surface 21511, and the convex block 2152 is provided with a guide inclined surface 21521, and the convex rib 2151 and the convex block 2152 can be separated along the guide surface 21511 and the guide inclined surface 21521.

[0134] The guide surface 21511 is arranged on the convex rib 2151 and cooperates with the guide inclined surface 21521 on the convex block 2152. When the torque is greater than the transmission torque, the convex rib 2151 and the convex block 2152 can be guided to separate along the guide surface 21511 and the guide inclined surface 21521, the second connecting shaft 212 and the third connecting shaft 213 are separated, the transmission process is disconnected, and damage to the driving mechanism is avoided.

[0135] In some embodiments, as shown in FIG. 9, 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 to divide the hollow cavity into a first connecting cavity and a second connecting cavity; the first connecting shaft 211 further comprises:

[0136] a first transmission matching surface 2112 adapted to be connected with a to-be-driven component, the first transmission matching surface 2112 being arranged in the first connecting cavity;

[0137] a second transmission matching surface 2113 adapted to be connected with the second connecting shaft 212; the second transmission matching surface 2113 being arranged in the second connecting cavity; and one end of the second connecting shaft 212 penetrating through the second connecting cavity and being lapped on the annular step 2111.

[0138] The annular step 2111 formed in the hollow cavity of the first connecting shaft 211 can be used as a limiting structure of the second connecting shaft 212 to limit the axial movement distance of the second connecting shaft 212, so as to avoid the excessive axial movement of the second connecting shaft 212 during the disengagement of the third connecting shaft 213, and improve the reliability of the transmission assembly 21.

[0139] As shown in the figure, the first transmission matching surface 2112 is further provided with a positioning groove 21121 adapted to be connected with a positioning rib 22121 of the water injector 2 to prevent the wrong connection. The top outer circumferential side of the first transmission matching surface 2112 is further provided with two limiting ribs 2114, which are arranged at intervals and can be matched with limiting ribs 31 on the surrounding environment components to limit the rotation angle of the transmission assembly 21.

[0140] It should be noted that the pipe wall of the first connecting shaft 211 is further provided with a window 2115 for the water supply pipe to lead out of the second connecting pipe 4 to connect with a water supply device. The first connecting shaft 211 will not move the water supply pipe during rotation, and the water supply pipe will not be folded or damaged, thereby prolonging the service life of the water supply pipe.

[0141] In some embodiments, the first transmission matching surface 2112 and the second transmission matching surface 2113 both comprise polygonal matching surfaces. The polygonal matching surfaces are used for transmission, and the structure is simple and the transmission reliability is high, which is suitable for torque transmission.

[0142] In some embodiments, as shown in FIG. 9, the second connecting shaft 212 comprises: Figure 10

[0143] a transmission rod 2121, which is arranged near the top circumferential side of the first connecting shaft 211 and is provided with a third transmission matching surface 21211 matched with the first connecting shaft 211;

[0144] ​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 matched with the third connecting shaft 213. The pre-tightening mechanism 214 is abutted to the annular top surface of the skirt 2122.

[0145] The skirt 2122 is arranged at the bottom end of the transmission rod 2121, thereby increasing the area of the transmission matching surface of the second connecting shaft 212 and the third connecting shaft 213, and facilitating the arrangement of the anti-over-torque structure 215. Moreover, the pre-tightening mechanism 214 is conveniently arranged, so that the pre-tightening force is applied to the second connecting shaft 212, and the second connecting shaft 212 is abutted to the third connecting shaft 213, thereby realizing reliable transmission.

[0146] In some embodiments, the top end of the transmission rod 2121 is provided with a mounting portion, and the mounting portion is provided with a pre-assembled part 2123. The mounting portion can pass through the annular step 2111 and be limited in the first connecting cavity by the pre-assembled part 2123.

[0147] Specifically, the pre-assembled part 2123 is a screw, and the screw head is directly large, so that the second connecting shaft 212 can be supported in the hollow cavity of the first connecting shaft 211, thereby facilitating installation. The second connecting shaft 212 can be lapped at the annular step 2111 by the screw.

[0148] The pre-assembled part 2123 is arranged, so that during the assembly of the transmission assembly 21, the second connecting shaft 212 can be preliminarily positioned and fixed in the cavity of the first connecting shaft 211, thereby preventing the second connecting shaft 212 from falling and improving installation convenience.

[0149] In some embodiments, as shown in Figure 11 The third transmission shaft comprises:

[0150] 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 arranged at the fourth transmission matching surface 21221 and the fifth transmission matching surface 21311.

[0151] The input shaft 2132 is arranged at the side of the transmission cap 2131 away from the fifth transmission matching surface 21311. The input shaft 2132 is provided with a shaft hole 21321, and the power output end of the driving mechanism can be matched and arranged in the shaft hole 21321.

[0152] The power output end of the driving mechanism is directly arranged in the shaft hole 21321 of the third transmission shaft, so that the connection is reliable, and the transmission is stable.

[0153] According to the embodiments of the utility model, on the other hand, a water adding device is also provided, which comprises:

[0154] The water injector 2 is provided with a water inlet 2221.

[0155] drive mechanism

[0156] The drive mechanism is connected with the water injector 2 through the transmission assembly 21.

[0157] The water injector 2 is driven by the transmission assembly 21 of the utility model, and the water injector 2 is driven to rotate by the drive mechanism, so that automatic water adding is facilitated; when the water injector 2 encounters an obstacle or a relatively large rotating torque, the transmission assembly 21 can be disconnected from the drive mechanism by the anti-over-torque structure 215, so that damage to the drive mechanism is avoided, and the use safety and reliability of the water adding device are improved. Moreover, the third connecting shaft 213 serving as the power input shaft 2132 and the first connecting shaft 211 serving as the power output shaft are provided with the second connecting shaft 212, so that the transmission assembly 21 does not affect the driven component when the transmission assembly 21 is separated in the axial direction under an over-torque, the driven component is more firmly installed, and the driven component can also be prevented from being axially moved to cause a poor experience for a user.

[0158] Specifically, the drive mechanism comprises a motor 5.

[0159] According to the embodiment of the utility model, on the other hand, a household appliance is also provided, which comprises the water adding device.

[0160] The household appliance comprises the water adding device of the utility model, and therefore has the same technical effects as the water adding device, which will not be described herein.

[0161] The household appliance can be an electric kettle, an electric tea kettle, a cooking appliance, a dishwasher or the like, and can be an electric appliance capable of automatically adding water or a sink capable of automatically injecting water, without being specifically limited herein.

[0162] In some embodiments, the household appliance is an electric kettle, and the electric kettle comprises:

[0163] A kettle body 8 is provided with a water injection opening 82; the kettle body 8 is provided at the top with a kettle handle 83;

[0164] A kettle seat 1 is provided with a containing cavity, and the kettle body 8 is placed in the containing cavity; the water injector 2 is rotatably arranged on the kettle seat 1, and the water injection opening 82 is located on the rotating path of the water supply opening 2221.

[0165] Since the electric kettle comprises the water adding device of the utility model, if the water adding device encounters an obstacle or an over-torque under external action during rotation, the transmission assembly 21 will be disconnected, so that the drive mechanism is not damaged, and the electrical safety is improved.

[0166] As shown in Figures 16-18 The kettle seat 1 comprises:

[0167] The fixing seat 11 is a top-opened cylindrical structure, and an inner cavity of the cylindrical fixing seat 11 is adapted to accommodate the kettle body 8 of the electric kettle.

[0168] The mounting structure is at least partially arranged in the fixing seat 11, and the mounting structure comprises a first mounting portion 115, and the water filler 2 of the electric kettle can be arranged at the periphery of the fixing seat 11 through the first mounting portion 115.

[0169] The fixing seat 11 of the kettle seat 1 is a top-opened cylindrical structure, and the kettle body 8 of the electric kettle can be placed in the inner cavity of the fixing seat 11 for heating. Since the water filler 2 is arranged at the periphery of the fixing seat 11 through the first mounting portion 115, the kettle body 8 will not interfere with the water filler 2 when the kettle body 8 is taken out or placed from any direction, which improves the convenience and provides a good user experience. Moreover, a hole can be formed in the placing table surface of the electric kettle, and the fixing seat 11 can be directly sunk below the placing table surface to reduce the occupied space on the table surface. Since the kettle body 8 is accommodated in the inner cavity of the fixing seat 11, the surface of the kettle body 8 is isolated, which avoids burns caused by accidentally touching the high-temperature kettle body 8, and the kettle body 8 is not easy to be tilted by external force, which improves the use safety and reduces the risk of burns to children.

[0170] Specifically, the first mounting portion 115 comprises a positioning lug arranged at the bottom of the side wall of the fixing seat 11, and a positioning hole 1151 is formed in the positioning lug to facilitate the installation and positioning of the water filler 2.

[0171] In some embodiments, the kettle seat 1 further comprises:

[0172] The support ring 12 is arranged at the opening of the fixing seat 11, and part of the mounting structure is arranged on the support ring 12.

[0173] The support ring 12 is arranged at the opening of the fixing seat 11, and the transmission assembly 21 of the water filler 2 is hidden below the support ring 12 to improve the appearance; and part of the mounting structure can be arranged on the support ring 12 to improve the assembly convenience of the parts of the electric kettle.

[0174] In some embodiments, the support ring 12 comprises:

[0175] The ring body 122 is a tubular structure with both ends open;

[0176] The decorative eave 121 is arranged at the first end of the ring body 122, and the support ring 12 is lapped on the fixing seat 11 through the decorative eave 121; the second end of the ring body 122 extends into the inner cavity of the fixing seat 11; and a through hole 1211 is formed in the decorative eave 121 for the water filler 2 to pass through.

[0177] The support ring 12 is lapped on the fixing base 11 through the decorative eaves 121 of the first end of the ring body 122; the second end of the ring body 122 extends to the inner cavity of the fixing base 11, and the decorative eaves 121 plays a decorative role and shields the fixing base 11 and the parts mounted on the kettle base 1, which not only improves the appearance but also plays a certain protective role.

[0178] In some embodiments, the mounting structure includes a second mounting portion 123 arranged at the bottom side of the decorative eaves 121.

[0179] The mounting structure arranged at the bottom side of the decorative eaves 121 can conveniently position and fix the parts and other devices of the water injector 2, effectively utilize the space, and improve the connection reliability.

[0180] In some embodiments, the support ring 12 is detachably arranged on the fixing base 11.

[0181] The support ring 12 and the fixing base 11 are detachably mounted together, which is convenient for maintenance and facilitates separate manufacturing and reinstallation, thereby simplifying the manufacturing process.

[0182] In some embodiments, the edge of the fixing base 11 is formed with a gap slot 111.

[0183] The gap slot 111 arranged at the edge of the fixing base 11 can provide space for the spout 81 of the kettle body 8 to extend out, which can reduce the volume of the kettle base 1 and facilitate steam discharge and diffusion.

[0184] In some embodiments, the support ring 12 is formed with a gap decorative portion 1212 corresponding to the gap slot 111.

[0185] The gap decorative portion 1212 is arranged on the support ring 12 corresponding to the gap slot 111, which also plays a shielding and decorative role, prevents dust and foreign matter from entering the gap, and can improve the overall appearance and aesthetics.

[0186] In some embodiments, as shown in Figures 16-17 the fixing base 11 is a cylindrical structure, the edge of the opening of the fixing base 11 is provided with a gap slot 111 for the spout 81, and the side wall of the fixing base 11 is provided with a sink 112, the bottom surface of the sink 112 is provided with a through slot hole; the side wall of the ring body 122 of the support ring 12 is provided with a mounting column 124, the mounting column 124 is arranged in the sink 112 and the bottom end of the mounting column 124 extends out through the slot hole. The inner cavity bottom surface of the fixing base 11 is distributed with a plurality of mounting support ribs 114, which can conveniently provide support for the support ring 12 and reserve installation space for the electric heating assembly.

[0187] In some embodiments, the transmission assembly 21 is hiddenly arranged in the kettle base 1.

[0188] The driving assembly is hidden in the kettle seat 1, has small volume, does not occupy the space on the table, and is more beautiful.

[0189] In some embodiments, the electric kettle is further provided with a to-position detection device of the water filler 2. The to-position detection device comprises:

[0190] The photoelectric switch 7 is connected with the controller of the electric kettle, and the controller is further connected with the driving mechanism. The photoelectric switch 7 is arranged at the mounting position 35 of the positioning plate.

[0191] The triggering structure is arranged at the top end of the first connecting shaft 211.

[0192] When the driving assembly 21 rotates to a specific position (i.e. the position corresponding to that the water supply port 2221 rotates above the water filler 82), the triggering structure moves between the emitting part and the receiving part of the photoelectric switch 7, blocks the light transmission between the emitting part and the receiving part, and the photoelectric switch 7 feeds back a signal to the controller. After the controller obtains the signal, the controller controls the driving mechanism to stop, realizes automatic to-position detection and control. The controller is further connected with the water pump 6 or the water supply switch, controls the water pump 6 to start or the water supply switch to open at the same time when the driving mechanism stops, and water is transported to the water supply port 2221 by the water supply device to automatically fill the water filler 82.

[0193] The water filler 2 of the water adding device comprises a lower water adding column 22 and an upper cover 23. The structure of the upper cover 23 is shown in Figure 6 The rotating arm 222 of the lower water adding 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 with the rotating arm 222 through the clamping of the buckle 231 and the buckle position 2223. The buckle 231 is clamped with the buckle position 2223, so that the upper cover 23 is detachably installed on the rotating arm 222 of the lower water adding column 22, facilitating disassembly and assembly.

[0194] As shown in Figures 5-6 The lower water adding column 22 comprises:

[0195] The pipe body 221 is provided with a water inlet hole 2211 at the water inlet end;

[0196] The rotating arm 222 is arranged at the water outlet end of the pipe body 221. The rotating arm 222 has a groove structure with an open top surface. The bottom side of the rotating arm 222 is provided with a water supply port 2221, and a water adding channel is formed between the water inlet hole 2211 and the water supply port 2221;

[0197] The circumferential side of the pipe body 221 near the water inlet end is formed with a matching structure 2212. The matching structure 2212 is suitable for being connected with the driving mechanism through the driving assembly 21. The driving mechanism can drive the lower water adding column 22 to rotate, so that the water supply port 2221 moves above the water using device.

[0198] The lower water column 22 comprises a pipe body 221 and a rotating arm 222, a water inlet hole 2211 on the pipe body 221 and a water supply port 2221 on the rotating arm 222 form a water adding channel, the water adding structure is simple, convenient to assemble, improves the assembly efficiency, and is also convenient to maintain.

[0199] In some embodiments, the lower water column 22 further comprises:

[0200] The first connecting pipe 223 is arranged in the groove cavity 2222 of the rotating arm 222;

[0201] The first connector 224 is arranged in the groove cavity 2222 of the rotating arm 222; the first end of the first connector 224 is in communication with one end of the first connecting pipe 223 close to the water supply port 2221, and the second end of the first connector 224 is in communication with the water supply port 2221;

[0202] The second connector 225 is partially arranged in the groove cavity 2222 of the rotating arm 222; the first end of the second connector 225 is in communication with one end of the first connecting pipe 223 close to the pipe body 221, and the second end of the second connector 225 is connected with the pipe body 221 and in communication with the water inlet hole 2211.

[0203] The first connecting pipe 223 is in communication with the water supply port 2221 and the water inlet hole 2211 through the first connector 224 and the second connector 225, which can ensure water quality safety, facilitate the use of different materials for the water flow channel and the rotating arm 222, and ensure sealing performance.

[0204] In some embodiments, the pipe body 221 is provided with an upper shaft shoulder 2213 and a lower shaft shoulder 2214 on the side, which is suitable for connecting with the environment to realize axial limiting of the lower water column 22.

[0205] The upper shaft shoulder 2213 and the lower shaft shoulder 2214 are arranged on the pipe body 221, which facilitates axial limiting of the pipe body 221 and improves installation reliability.

[0206] In some embodiments, the pipe body 221 is provided with a connecting column 2215 at the bottom end, and the water inlet hole 2211 is located at the end of the connecting column 2215; a matching structure 2212 is arranged between the connecting column 2215 and the lower shaft shoulder 2214.

[0207] The connecting column 2215 is arranged at the bottom end of the pipe body 221, which facilitates connection with the water conveying pipe and improves assembly convenience.

[0208] In some embodiments, the lower water column 22 further comprises:

[0209] The positioning rib 22121 or the positioning groove 21121 is arranged at the matching structure 2212 and is adapted to be matched and connected with the positioning groove 21121 or the positioning rib 22121 on the transmission assembly 21.

[0210] The positioning rib 22121 is arranged at one of the transmission assembly 21 and the water adding column 22, and the positioning groove 21121 is arranged at the other one, so that the installation process is prevented from being mistaken and the installation efficiency is improved.

[0211] The positioning plate 3 is fixed on the support ring 12, and the photoelectric switch 7 is installed on the positioning plate 3. The photoelectric switch 7 is provided with a clamping groove sensing part. The motor 5 drives the first connecting shaft 211 and the water adding column 22 to rotate through a transmission belt. The first connecting shaft 211 is provided with a trigger part 2116. When the water adding column 22 rotates to the position directly above the water inlet 82, the trigger part 2116 of the first connecting shaft 211 is just rotated into the clamping groove sensing part of the photoelectric switch 7. The photoelectric switch 7 receives the signal that the water adding column 22 is rotated to the position and transmits the signal to the control unit of the electric kettle, so as to control the motor 5 to stop rotating and control the water pump 6 to start working to add water into the kettle.

[0212] The limiting stop rib is arranged on the positioning plate 3, and the first limiting rib 2114 and the second limiting rib 2114 are arranged on the first connecting shaft 211. When the water adding column is at the initial position, the first limiting rib 2114 is matched with the front surface of the limiting stop rib 31. When the water adding column is at the water adding position, the second limiting rib 2114 is matched with the back surface of the limiting stop rib 31, so as to limit the rotation angle of the water adding column 22 between the initial position and the water adding position. After the water adding is completed, the water adding column 22 returns to the initial position.

[0213] Although the embodiments of the present application are described in combination with the drawings, various modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and variations all fall within the scope defined by the present application.

Claims

1. A positioning plate fixing structure characterized by comprising: The application relates to a positioning plate (3) and a water adding device (1) comprising the positioning plate (3). The positioning plate (3) comprises a plate body (30) and a fixing part (32) and a positioning structure arranged on the plate body (30); a support structure is arranged with a mounting part matched with the fixing part (32) to mount the positioning plate (3) on a device body; a water adding device (2) is rotatably limited on the positioning plate (3) by the positioning structure, and the water adding device (2) has an initial position and a water adding position. The positioning structure comprises: a mounting hole (33) in which the water adding device (2) is horizontally positioned; and a clamping jaw (34) extended from the plate body (30) and clamped on the water adding device (2) to axially position the water adding device (2).

2. The positioning plate fixing structure according to claim 1, characterized by The fixing part (32) comprises at least two fixing grooves, the mounting part comprises at least two fixing columns, and the positioning plate (3) is clamped on the fixing columns of the support structure through the fixing grooves. The water adding device (2) comprises a lower water adding column (22) comprising: a pipe body (221) provided with an upper shaft shoulder (2213) and a lower shaft shoulder (2214) matched with the positioning structure; and a rotary arm (222) communicated with the top end of the pipe body (221) and capable of swinging with the rotation of the pipe body (221).

3. The positioning plate fixing structure according to claim 1, characterized by The positioning structure further comprises:

4. The positioning plate fixing structure according to claim 1, characterized by a sensing position (36) arranged on the side of the plate body (30) away from the fixing part (32) and suitable for installing a position detection component of the water adding device (2); and a limiting stop rib (31) arranged on the side of the plate body (30) away from the fixing part (32) and suitable for limiting the rotation angle of the water adding device (2). The limiting stop rib (31) comprises: a first limiting surface corresponding to the initial position of the water adding device (2); and a second limiting surface opposite to the first limiting surface and corresponding to the water adding position of the water adding device (2).

5. The positioning plate fixing structure according to any one of claims 1 to 4, characterized by, The application further relates to a water adding device (1) comprising: a positioning plate (3) fixing structure according to any one of claims 1 to 6; a driving mechanism; 6. The positioning plate fixing structure according to claim 5, wherein a transmission assembly (21) drivingly connected between the driving mechanism and the water adding device (2) to drive the water adding device (2) to rotate between the initial position and the water adding position. The transmission assembly (21) comprises: a first transmission shaft provided with two limiting ribs (2114) matched with the positioning structure at intervals in the circumferential direction, one of the limiting ribs (2114) corresponding to the initial position and the other limiting rib (2114) corresponding to the water adding position.

7. A water adding device characterized by comprising: The application further relates to a household appliance comprising: a device body; a positioning plate (3) fixing structure according to any one of claims 1 to 6 or a water adding device according to claim 7 or 8; a base device, and the support structure is arranged on the base device, and the mounting part is extended from the support structure to the positioning plate (3).

8. The water adding device according to claim 7, wherein The household appliance is an electric kettle. ​ 9. A domestic appliance characterized in that, ​ ​ ​ ​ 10. The domestic appliance according to claim 9, characterized in that, ​

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