CN215305030U - Electric kettle - Google Patents

Abstract

The utility model relates to the field of electric appliances, in particular to an electric kettle. It includes the kettle body, driving piece and by the lifting unit of driving piece control, the internal tea basket that is equipped with of kettle, and lifting unit drives the tea basket and goes up and down at the internal kettle, lifting unit includes screw rod, lift post and the inside sleeve that has the slide opening, and the lift post is connected with the screw rod and is formed screw-thread fit, and the lift post slides and sets up in the slide opening, and telescopic upper end is surpassed to the upper end of lift post, and the tea basket is installed and is surpassed telescopic part on the lift post, and driving piece drive screw rotates in order to drive the lift post and go up and down on the sleeve. According to the tea basket lifting device, the matching structure of the tea basket and the lifting assembly is improved, the matching structure of the tea basket and the lifting assembly is simplified, and the lifting stability of the tea basket is improved.

Description

Electric kettle

Technical Field

The utility model relates to the field of electric appliances, in particular to an electric kettle.

Background

At present, a lifting component is arranged in part of electric kettles on the market, and a tea basket is arranged on the lifting end of the lifting component to realize the lifting function so as to separate tea from water. The mode cooperation of tea basket and lifting unit's lift end through magnetism usually is in the same place, but magnet soaks in the tea of high temperature often, has the risk of ageing and demagnetization, and tea basket adsorption affinity is not enough has the risk of droing. Meanwhile, in order to prevent the magnet from directly contacting the tea water to influence health, a full-sealing structure is arranged around the magnet, and the structure is complex and the cost is high.

In order to improve the above problems, some technologies have changed the matching structure between the tea basket and the lifting assembly, for example, chinese patent publication No. CN209899130U, publication date 2020.01.07, and patent entitled "a filter assembly and health preserving pot" discloses a filter assembly and a health preserving pot, the filter assembly includes: filtering with a screen; the filter screen is movably sleeved outside the lifting column, and a first connecting piece connected with the filter screen is arranged in the lifting column; and the driving mechanism is connected with the first connecting piece so as to drive the first connecting piece and the filter screen to move up and down along the lifting column.

But because tea basket (filter screen) is that the slip cover is established in the outside of lift post in above-mentioned technique, and the tea basket still is connected with the inside first connecting piece of lift post, leads to tea basket and lifting unit's cooperation structure complicated, and the tea basket needs and a plurality of part cooperation, and the lift stability is difficult to guarantee.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects that the matching structure of a tea basket and a lifting assembly on an electric kettle is complex and the lifting stability is difficult to guarantee in the prior art, the utility model aims to provide the electric kettle.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an electric kettle, includes the kettle body, driving piece and by the lifting unit of driving piece control, the internal tea basket that is equipped with of kettle, lifting unit drive tea basket at the internal lift of kettle, lifting unit includes screw rod, lift post and the inside sleeve that has the slide opening, and the lift post is connected with the screw rod and is formed screw-thread fit, and the lift post slides and sets up in the slide opening, and the upper end of lift post surpasss telescopic upper end, and the tea basket is installed and is surpassed telescopic part on the lift post, and driving piece drive screw rotates in order to drive the lift post and go up and down on the sleeve.

Through this setting, the sleeve is fixed motionless, the lift post forms sliding fit with the sleeve, and lift post upper end surpasss telescopic upper end, rotate through the inside screw rod of driving piece drive and make the lift post go up and down, lift post and sleeve just have formed one and have moved a quiet extending structure like this, the upper end at the lift post is installed to the tea basket simultaneously, through the rising or the decline of lift post drive tea basket lift, the tea basket is whole journey contactless with the sleeve, consequently, there is not connection structure between tea basket (being equivalent to the filter screen in the background patent) and the sleeve (being equivalent to the lift post in the background patent), the tea basket is only fixed on the lift post, the cooperation structure of tea basket and lifting unit has been simplified, simultaneously because cooperation structure simplifies the leakproofness of changing assurance lifting unit, be difficult for getting into tea water in the lifting unit, guarantee lifting unit's raising and lowering functions.

The utility model is further configured to: the bottom of the kettle body is provided with a bottom plate, the lifting assembly is arranged on the upper side of the bottom plate and extends out of the kettle body, the driving piece is arranged on the lower side of the bottom plate through a fastener, and the screw rod is connected with an output shaft of the driving piece. Through this setting, the bottom plate provides mounting structure for driving piece and lifting unit, and lifting unit and driving piece are installed respectively in the upper and lower both sides of bottom plate, and lifting unit can regard as a unit mount to the bottom plate simultaneously, convenient equipment.

The utility model is further configured to: the screw rod is located in the sliding hole, the upper end of the lifting column is closed, a blind hole with a downward opening is formed in the lifting column, internal threads are formed in the lower end of the lifting column, the screw rod is meshed with the internal threads at the lower end of the lifting column, and the upper end of the screw rod extends into the blind hole. Through this setting, the upper end of lift post is sealed and is prevented to get into tea, and lift post and screw rod form screw-thread fit simultaneously, and the blind hole provides the activity space for the motion of lift post, takes place to interfere with the screw rod when preventing to lift the post, and sleeve, lift post and screw rod form multilayer nested structure, because the existence of slide opening and blind hole, the up-and-down motion of lift post is not disturbed by sleeve or screw rod.

The utility model is further configured to: the outer side wall of the lifting column is provided with a guide protrusion, the inner side wall of the sleeve is provided with a guide groove matched with the guide protrusion, the extending direction of the guide groove is the same as the sliding direction of the lifting column, and the guide protrusion is embedded in the guide groove and slides along the guide groove. Through this setting, the guide bulge cooperates the circumferential direction of restriction lift post with the guide way to when making the screw rod drive the motion of lift post, the slip along the screw rod only takes place for the lift post, and does not take place to rotate along with the screw rod, realizes the raising and lowering functions of lift post better.

The utility model is further configured to: an upper step surface is arranged in the sleeve and located at the upper part of the sliding hole, a radially extending annular limiting part is arranged on the lifting column, and when the lifting column moves upwards to the highest point, the annular limiting part abuts against the upper step surface to limit the lifting column. Through this setting, the rising motion of upper step face lifting column carries on spacingly, when the lifting column rises to the spacing portion of annular to with upper step face butt, the lifting column reachs the peak, the lifting column can not continue upward movement to prevent that the tea basket from contacting the pot lid.

The utility model is further configured to: the sleeve is internally provided with a lower step surface which is positioned at the lower part of the sliding hole, and when the lifting column moves downwards to the lowest point, the annular limiting part is abutted against the lower step surface to limit the lifting column. Through this setting, lower step face is spacing to the descending motion of lift post, and when the lift post descends to the spacing portion of annular to when with lower step face butt, the lift post reachs the minimum, and the lift post can not continue downstream to prevent that the tea basket from contacting kettle body bottom.

The utility model is further configured to: the lifting assembly is characterized in that a rotary buckling groove is formed in the sleeve, a boss is arranged on the bottom plate, a convex hull matched with the rotary buckling groove is arranged on the boss, and the convex hull is screwed in the rotary buckling groove so that the lifting assembly can be detachably arranged on the bottom plate. Through this setting, lifting unit need not to be connected with the bottom plate through the fastener, only needs to overlap the sleeve on the boss, and the convex closure is relative with the entry of revolving the catching groove this moment, then rotates certain angle with the sleeve, and the convex closure is in the spiral catching groove of screw in promptly, and the sleeve all is spacing at horizontal direction and vertical direction this moment, and the bottom plate can not be taken out through the mode of translation (horizontal, vertical not going), if need take off the sleeve, need the reverse rotation sleeve for the convex closure leaves and revolves the catching groove.

The utility model is further configured to: the back stopping protrusion is arranged in the screwing groove, and the back stopping protrusion is positioned behind the screwing direction of the convex hull after the convex hull is screwed into the screwing groove along the screwing direction. Through this setting, the sleeve is according to the rotatory back of installing on the bottom plate of a direction, and the protruding closure is reverse to screw out with the protruding butt restriction sleeve of stopping for the bottom plate is difficult for deviating from easily to the sleeve, if need take off the sleeve, then need use bigger power to overcome the protruding restriction to the protruding closure of stopping, makes the protruding closure cross the stopping arch, and the sleeve just can reverse screw out and take off from the bottom plate.

The utility model is further configured to: an upper sealing groove is arranged in the sleeve and is positioned at the upper part of the sliding hole, an upper sealing ring is arranged in the upper sealing groove, and the lifting column is in sealing fit with the sleeve through the upper sealing ring. Through this setting, go up the sealing washer and sealed between to lift post and the sleeve, even lift post and sleeve are a relative motion's relation, tea can not get into the upper portion of slide opening from the gap between lift post and the sleeve yet.

The utility model is further configured to: and a lower sealing groove is arranged in the sleeve and is positioned at the lower part of the sliding hole, a lower sealing ring is arranged in the lower sealing groove, and the lower end of the screw rod is in sealing fit with the sleeve through the lower sealing ring. Through this setting, lower sealing washer has sealed between to screw rod and the sleeve, even screw rod and sleeve be a relative motion's relation, tea can not also get into the lower part of slide opening from the gap between screw rod and the sleeve.

The utility model has the advantages that: 1) the sleeve is fixed, the lifting column is arranged on the sleeve in a sliding mode, the upper end of the lifting column exceeds the upper end of the sleeve, the driving piece drives the internal screw to rotate so that the lifting column can lift, the lifting column and the sleeve form a movable and static telescopic structure, meanwhile, the tea basket is arranged at the upper end of the lifting column, the tea basket is driven to lift through the lifting or descending of the lifting column, the tea basket is not in contact with the sleeve in the whole process, therefore, a connecting structure does not exist between the tea basket (equivalent to a filter screen in a background patent) and the sleeve (equivalent to the lifting column in the background patent), the sealing problem does not exist, the sealing performance of the lifting assembly can be guaranteed, tea water cannot enter the lifting assembly easily, and the lifting function of the lifting assembly is guaranteed; 2) the upper end and the lower end of the sliding hole are sealed, tea water is not easy to enter the sleeve, so that the lifting assembly forms a relatively independent sealed whole, and the tea basket cannot influence the sealing of the lifting assembly; 3) the mounting structure of the lifting assembly is designed, the lifting assembly and the driving piece are respectively mounted on the upper side and the lower side of the bottom plate, the lifting assembly is detachably connected with the boss at the upper end of the bottom plate, and the motor is suspended at the lower end of the bottom plate, so that the noise during operation can be reduced; 4) an upper step surface and a lower step surface are arranged in the sleeve, an annular limiting part is arranged on the lifting column, and the upper limit position or the lower limit position of the lifting column is respectively limited when the annular limiting part is contacted with the upper step surface or the lower step surface.

Drawings

FIG. 1 is a schematic view of the configuration of the tea basket at the highest point in example 1 of the present invention;

FIG. 2 is a schematic view of the lowest point of the tea basket in example 1 of the present invention;

FIG. 3 is a sectional view of the elevating assembly in embodiment 1 of the present invention;

fig. 4 is a schematic view of the internal structure of the lifting assembly in embodiment 1 of the present invention;

fig. 5 is a schematic structural view of a lifting assembly in embodiment 1 of the present invention;

FIG. 6 is a schematic structural view of a lifting column in example 1 of the present invention;

FIG. 7 is a schematic view of the structure at the bottom plate in embodiment 2 of the present invention;

fig. 8 is a split view of a motor and a lifting assembly in embodiment 2 of the present invention;

FIG. 9 is a schematic view of the lower part of the lifting assembly in embodiment 2 of the present invention;

FIG. 10 is a schematic structural view of a base plate in embodiment 2 of the present invention;

fig. 11 is a schematic structural view of the lifting assembly replaced with a stirring blade in the utility model 2.

Reference numerals: the tea kettle comprises a kettle body 100, a tea basket 101, a bottom plate 102, a boss 103, a convex hull 104, a motor 200, a connecting shaft 201, a shaft seal 202, a spring 203, a coupling 204, a screw 301, a lifting column 302, a sleeve 303, a sliding hole 304, a blind hole 305, an internal thread 306, a guide protrusion 307, a guide groove 308, an upper seal ring 309, a lower seal ring 310, an upper step surface 311, a lower step surface 312, an annular limiting part 313, a screwing groove 314, a longitudinal groove 315, a transverse groove 316, a backstop protrusion 317 and a stirring blade 400.

Detailed Description

In the description of the present embodiment, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", etc. appear, their indicated orientations or positional relationships are based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The utility model is further described with reference to the drawings and the specific embodiments in the following description.

Example 1: as shown in figures 1 to 6 of the drawings,

an electric kettle comprises a kettle body 100, a motor 200 and a lifting assembly controlled by the motor 200, wherein a tea basket 101 is arranged in the kettle body 100, the lifting assembly comprises a screw 301, a lifting column 302 and a sleeve 303 with a sliding hole 304 inside, the lifting column 302 is arranged in the sliding hole 304 in a sliding way, the diameter of the lifting column 302 is smaller than that of the sleeve 303, the screw 301 is positioned in the sliding hole 304, the upper end of the lifting column 302 is closed to prevent tea water from entering, a blind hole 305 with a downward opening is arranged on the lifting column 302, the lower end of the lifting column 302 is provided with an internal thread 306, the screw 301 is meshed with the internal thread 306 at the lower end of the lifting column 302, the upper end of the screw 301 extends into the blind hole 305, the upper end of the lifting column 302 exceeds the upper end of the sleeve 303, the tea basket 101 is mounted on the lifting column 302 and exceeds the part of the sleeve 303, the motor 200 drives the screw 301 to rotate so as to drive the lifting column 302 to lift on the sleeve 303, and the tea basket 101 rises or falls along with the movement of the lifting column 302.

It can be understood that, in order to better realize the lifting function of the lifting column 302, a circumferential limit structure is further provided between the lifting column 302 and the sleeve 303. The outer side wall of the lifting column 302 is provided with a guide protrusion 307, the inner side wall of the sleeve 303 is provided with a guide groove 308 matched with the guide protrusion 307, the extending direction of the guide groove 308 is the same as the sliding direction of the lifting column 302, the guide protrusion 307 is embedded in the guide groove 308 and slides along the guide groove 308, the guide protrusion 307 is matched with the guide groove 308 to limit the circumferential rotation of the lifting column 302, so that when the screw 301 drives the lifting column 302 to move, the lifting column 302 only slides along the screw 301, and does not rotate along with the screw 301.

In this embodiment, the sleeve 303 is fixed, the lifting column 302 is slidably disposed at the upper end of the sleeve 303 to form a sliding fit with the sleeve 303, the lifting column 302 and the screw 301 in the sleeve 303 form a threaded fit, the sliding hole 304 and the blind hole 305 provide a moving space for movement of the lifting column 302, interference with the sleeve 303 and the screw 301 when the lifting column 302 is lifted is prevented, the sleeve 303, the lifting column 302 and the screw 301 form a multi-layer nested structure from outside to inside, and due to the existence of the sliding hole 304 and the blind hole 305, the vertical movement of the lifting column 302 is not interfered by the sleeve 303 or the screw 301. The lifting column 302 is driven to rotate by the motor 200 to lift on the sleeve 303, so that the lifting column 302 and the sleeve 303 form a movable and static telescopic structure, the upper end of the lifting column 302 exceeds the upper end of the sleeve 303, meanwhile, the tea basket 101 is arranged at the upper end of the lifting column 302, the tea basket 101 is mounted in various ways and can be tightly matched on the lifting column 302 in an interference manner, the tea basket 101 is driven to lift by the lifting or descending of the lifting column 302 and the like, the tea basket 101 is not in contact with the sleeve 303 in the whole course, therefore, a direct connecting structure does not exist between the tea basket 101 (equivalent to a filter screen in the background patent) and the sleeve 303 (equivalent to the lifting column 302 in the background patent), the tea basket 101 is only fixed on the lifting column 302, the matching structure of the tea basket 101 and the lifting component is simplified, and the lifting component is easier to seal due to the matching structure, the tea water is not easy to be polluted by parts in the lifting component, and the tea water is not easy to enter the lifting component to influence the movement of the lifting component, such as the rotation of the screw 301, the lifting of the lifting column 302 and the like.

In order to further ensure the sealing performance of the lifting assembly, an upper sealing groove and a lower sealing groove are arranged in the sleeve 303, the upper sealing groove is located at the upper part of the sliding hole 304, the lower sealing groove is located at the lower part of the sliding hole 304, an upper sealing ring 309 is arranged in the upper sealing groove, the lifting column 302 is in sealing fit with the sleeve 303 through the upper sealing ring 309, a lower sealing ring 310 is arranged in the lower sealing groove, and the lower end of the screw 301 is in sealing fit with the sleeve 303 through the lower sealing ring 310. The upper seal ring 309 seals between the lifting column 302 and the sleeve 303, so that even if the lifting column 302 and the sleeve 303 are in a relative sliding motion relationship, tea water cannot enter the upper part of the sliding hole 304 from the gap between the lifting column 302 and the sleeve 303. The lower seal ring 310 seals between the screw 301 and the sleeve 303, so that tea water does not enter the lower portion of the slide hole 304 from a gap between the screw 301 and the sleeve 303 even if the screw 301 and the sleeve 303 are in a relative rotational movement relationship. The sleeve 303 is sealed at both the upper and lower positions, and tea water cannot enter the sleeve 303.

The sleeve 303 is provided with a limiting structure for limiting an upper limit position and a lower limit position of the movement of the lifting column 302, the sleeve 303 is internally provided with an upper step surface 311 and a lower step surface 312, the upper step surface 311 is positioned at the upper part of the sliding hole 304, the lower step surface 312 is positioned at the lower part of the sliding hole 304, the lifting column 302 is provided with an annular limiting part 313 extending in the radial direction, when the lifting column 302 moves upwards to the highest point, the annular limiting part 313 abuts against the upper step surface 311 to limit the lifting column 302, and when the lifting column 302 moves downwards to the lowest point, the annular limiting part 313 abuts against the lower step surface 312 to limit the lifting column 302. The upper step surface 311 limits the ascending movement of the lifting column 302, when the lifting column 302 ascends to the annular limiting part 313 and abuts against the upper step surface 311, the lifting column 302 reaches the highest point, and the lifting column 302 cannot move upwards continuously to prevent tea basket from contacting the pot lid; the lower step surface 312 limits the descending movement of the lifting column 302, when the lifting column 302 descends to the annular limiting part 313 until the annular limiting part abuts against the lower step surface 312, the lifting column 302 reaches the lowest point, and the lifting column 302 cannot move downwards continuously so as to prevent the tea basket from contacting the bottom of the kettle body 100.

In this embodiment, when the motor 200 is not operated, the tea basket 101 is at the highest position and is higher than the water surface, when a tea making program is executed, the motor 200 starts to operate to drive the screw 301 to rotate, the screw 301 drives the lifting rod assembly to move downwards through the internal thread 306 at the lower end of the lifting rod, so that the tea basket 101 descends, the tea basket 101 descends to the lowest point, and the annular limiting part 313 and the lower step surface 312 are abutted for limiting; on the contrary, after the tea making process is completed, the motor 200 moves in the reverse direction to drive the screw 301 to rotate in the reverse direction, the tea basket 101 rises to the highest point, and the annular limiting part 313 and the upper step surface 311 are abutted to limit the tea making process. Both positions can detect and control the operation of the motor 200 through a change in current.

Example 2: based on the structure in embodiment 1, this embodiment mainly provides a mounting structure of a lifting assembly, as shown in fig. 7 to 10,

the kettle body 100 comprises a kettle body 100 with an opening at the bottom and a bottom plate 102 with an opening at the bottom of the kettle body 100, the lifting assembly is arranged on the upper side of the bottom plate 102 and extends out towards the interior of the kettle body 100, the motor 200 is arranged on the lower side of the bottom plate 102 through screws, a connecting shaft 201 is sleeved on an output shaft of the motor 200 and is fastened by the screws, a shaft seal 202 is arranged at the connecting shaft 201, and the shaft seal 202 is pressed tightly between the bottom plate 102 and the motor 200 by a spring 203 and is used for sealing and water proofing. The lower end of the screw 301 is provided with a coupler 204, and the screw 301 is connected with the connecting shaft 201 through the coupler 204.

The sleeve 303 is internally provided with a screwing groove 314, the screwing groove 314 comprises a longitudinal groove 315 and a transverse groove 316, the longitudinal groove 315 is positioned at the lower part of the sleeve 303, the longitudinal groove 315 extends along the axial direction of the sliding block, the transverse groove 316 extends along the circumferential direction of the sliding block from the upper end of the longitudinal groove 315, the base plate 102 is provided with a boss 103, the boss 103 is provided with a convex hull 104 matched with the screwing groove 314, the convex hull 104 is screwed in the screwing groove 314 so that the lifting component can be detachably arranged on the base plate 102, the screwing groove 314 is internally provided with a stopping protrusion 317, and after the convex hull 104 is screwed in the screwing groove 314 along the screwing direction, the stopping protrusion 317 is positioned at the rear part of the screwing direction of the convex hull 104.

The bottom plate 102 provides a mounting structure for the motor 200 and the lifting component, the lifting component and the motor 200 are respectively mounted on the upper side and the lower side of the bottom plate 102, meanwhile, the lifting component can be mounted on the bottom plate 102 as a whole, the lifting component can be mounted in the middle of the bottom plate 102, the tea basket 101 can be directly sleeved on the lifting column 302 in the middle of the tea basket 101 at the moment, and can also be mounted on one side of the bottom plate 102, at the moment, the tea basket 101 can be fixed on the lifting column 302 at the side part, in a word, the tea basket 101 is located at a position of a relative center in the kettle body 100 after being mounted, the motor 200 is suspended at the lower end of the bottom plate 102, and noise during operation can be reduced. Lifting unit need not be connected with bottom plate 102 through the fastener, only need overlap sleeve 303 on boss 103, convex closure 104 gets into vertical groove 315 this moment, then rotate certain angle with sleeve 303, convex closure 104 is the screw in transverse groove 316 promptly, sleeve 303 is all spacing at horizontal direction (by boss 103 spacing) and vertical direction (by transverse groove 316 spacing) this moment, bottom plate 102 can not be taken out through horizontal translation or the mode of vertical translation to sleeve 303, if need take off sleeve 303, need reverse rotation sleeve 303, make convex closure 104 leave transverse groove 316, upwards mention sleeve 303 again, make convex closure 104 leave longitudinal groove 315, sleeve 303 just can be followed bottom plate 102 and taken off like this. In addition, after the sleeve 303 is rotatably mounted on the bottom plate 102 in one direction, the convex hull 104 abuts against the retaining protrusion 317 to limit the reverse rotation of the sleeve 303, so that the lifting assembly is prevented from loosening when the motor 200 rotates reversely, and the mounting stability of the lifting assembly on the bottom plate 102 is improved. If the sleeve 303 needs to be removed, a larger force is used to overcome the limit of the anti-back-up protrusion 317 on the convex hull 104, so that the convex hull 104 goes over the anti-back-up protrusion 317, and the sleeve 303 can be unscrewed reversely to be removed from the bottom plate 102.

As shown in fig. 11, since the lifting assembly can be installed or detached as a whole, when the tea boiling function is not used, the lifting assembly is taken down and replaced with the stirring blade 400, the stirring blade 400 is installed on the connecting shaft 201, the stirring blade 400 can be detached, when the electric kettle is used for making thick materials, the electric kettle can be stirred to prevent bottom pasting, and the electric kettle has more diversified functions.

The above embodiments are only for further illustration of the present invention, and should not be construed as limiting the scope of the present invention, and the technical engineers in the art can make insubstantial modifications and adaptations of the present invention based on the above disclosure and disclosure of the utility model.

Claims (10)

1. The utility model provides an electric kettle, includes the kettle body, driving piece and by the lifting unit of driving piece control, the internal tea basket that is equipped with of kettle, lifting unit drive tea basket at the internal lift of kettle, its characterized in that: the lifting assembly comprises a screw, a lifting column and a sleeve with a sliding hole inside, the lifting column is connected with the screw to form threaded fit, the lifting column is arranged in the sliding hole in a sliding mode, the upper end of the lifting column exceeds the upper end of the sleeve, the tea basket is arranged on the lifting column and exceeds the part of the sleeve, and the driving piece drives the screw to rotate so as to drive the lifting column to lift on the sleeve.

2. An electric kettle as claimed in claim 1, characterized in that: the bottom of the kettle body is provided with a bottom plate, the lifting assembly is arranged on the upper side of the bottom plate and extends out of the kettle body, the driving piece is arranged on the lower side of the bottom plate through a fastener, and the screw rod is connected with an output shaft of the driving piece.

3. An electric kettle as claimed in claim 1, characterized in that: the screw rod is located in the sliding hole, the upper end of the lifting column is closed, a blind hole with a downward opening is formed in the lifting column, internal threads are formed in the lower end of the lifting column, the screw rod is meshed with the internal threads at the lower end of the lifting column, and the upper end of the screw rod extends into the blind hole.

4. An electric kettle as claimed in claim 1, 2 or 3, characterized in that: the outer side wall of the lifting column is provided with a guide protrusion, the inner side wall of the sleeve is provided with a guide groove matched with the guide protrusion, the extending direction of the guide groove is the same as the sliding direction of the lifting column, and the guide protrusion is embedded in the guide groove and slides along the guide groove.

5. An electric kettle as claimed in claim 1, 2 or 3, characterized in that: an upper step surface is arranged in the sleeve and located at the upper part of the sliding hole, a radially extending annular limiting part is arranged on the lifting column, and when the lifting column moves upwards to the highest point, the annular limiting part abuts against the upper step surface to limit the lifting column.

6. An electric kettle as claimed in claim 5, characterized in that: the sleeve is internally provided with a lower step surface which is positioned at the lower part of the sliding hole, and when the lifting column moves downwards to the lowest point, the annular limiting part is abutted against the lower step surface to limit the lifting column.

7. An electric kettle as claimed in claim 2, characterized in that: the lifting assembly is characterized in that a rotary buckling groove is formed in the sleeve, a boss is arranged on the bottom plate, a convex hull matched with the rotary buckling groove is arranged on the boss, and the convex hull is screwed in the rotary buckling groove so that the lifting assembly can be detachably arranged on the bottom plate.

8. An electric kettle as claimed in claim 7, characterized in that: the back stopping protrusion is arranged in the screwing groove, and the back stopping protrusion is positioned behind the screwing direction of the convex hull after the convex hull is screwed into the screwing groove along the screwing direction.

9. An electric kettle as claimed in claim 1, 2 or 3, characterized in that: an upper sealing groove is arranged in the sleeve and is positioned at the upper part of the sliding hole, an upper sealing ring is arranged in the upper sealing groove, and the lifting column is in sealing fit with the sleeve through the upper sealing ring.

10. An electric kettle according to claim 9, characterized in that: and a lower sealing groove is arranged in the sleeve and is positioned at the lower part of the sliding hole, a lower sealing ring is arranged in the lower sealing groove, and the lower end of the screw rod is in sealing fit with the sleeve through the lower sealing ring.

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