阅读说明：本技术 一种自动升降火锅 (Automatic lifting hot pot ) 是由 李一峰 于 2019-11-13 设计创作，主要内容包括：本发明公开一种自动升降火锅,包括上壳体的内侧面设有发热体的加热底座、设在加热底座上的锅体和设在锅体内的食物篮；锅体的底部具有向上凸设的套管；加热底座内设步进电机及与步进电机的输出轴相连的螺杆,且螺杆位于套管内；在螺杆上螺合设有螺合件及固定在螺合件上的永磁体,且在套管内还设有用于限制螺合件在螺杆上发生转动的定位件；食物篮的底部设有轴孔及与轴孔固定相连的导磁环,且食物篮通过轴孔可活动的套设在套管上。本发明结构简单且可靠性较佳。(The invention discloses an automatic lifting hot pot, which comprises a heating base, a pot body and a food basket, wherein a heating body is arranged on the inner side surface of an upper shell; the bottom of the pot body is provided with a sleeve which is arranged in an upward protruding way; a stepping motor and a screw rod connected with an output shaft of the stepping motor are arranged in the heating base, and the screw rod is positioned in the sleeve; the screw rod is screwed with a screw part and a permanent magnet fixed on the screw part, and a positioning part for limiting the screw part to rotate on the screw rod is also arranged in the sleeve; the bottom of the food basket is provided with a shaft hole and a magnetic conduction ring fixedly connected with the shaft hole, and the food basket is movably sleeved on the sleeve through the shaft hole. The invention has simple structure and better reliability.)

1. An automatic lifting hot pot comprises a heating base, a pot body and a food basket, wherein the heating base is provided with a heating body on the inner side surface of an upper shell; the method is characterized in that: the bottom of the pot body is provided with a sleeve which is arranged in an upward protruding way; a stepping motor and a screw rod connected with an output shaft of the stepping motor are arranged in the heating base, and the screw rod is positioned in the sleeve; the screw rod is screwed with a screw part and a permanent magnet fixed on the screw part, and a positioning part for limiting the screw part to rotate on the screw rod is also arranged in the sleeve; the bottom of the food basket is provided with a shaft hole and a magnetic conduction ring fixedly connected with the shaft hole, and the food basket is movably sleeved on the sleeve through the shaft hole.

2. The automatic lifting hot pot as claimed in claim 1, wherein the shaft hole is formed at the center of the bottom of the food basket, the magnetic ring is fixed above the shaft hole, and the height of the magnetic ring is lower than the upper edge of the food basket.

3. The automatic lifting hot pot as claimed in claim 1, wherein the upper end of the sleeve is provided with a guide sleeve, and the upper end of the screw rod is limited in the guide sleeve.

4. The automatic lifting hot pot as claimed in claim 1, wherein the screw has an upper end provided with an upper stopper which prevents the screw from passing through.

5. The automatic lifting chafing dish as claimed in claim 1, wherein a support is provided on the upper casing of the heating base, and a lower stopper is provided at the lower end of the screw rod, and is stopped on the support so that the screw rod cannot move horizontally or vertically but can only rotate by the output shaft of the stepping motor.

6. An automatic lifting hot pot as claimed in claim 5, wherein the support is provided with a limiting hole having a size larger than the body of the screw and smaller than the lower limiting piece, the upper end of the screw passes through the limiting hole and the lower limiting piece is located below the support, and the limiting piece is limited on the support by a pressing ring fixed on the support.

7. The automatic lifting hot pot as claimed in claim 1, wherein the sleeve and the pot body are integrally formed or separately connected.

8. An automatic lifting hot pot as claimed in claim 1, wherein the bottom of the pot body is provided with a mounting position, the center of the mounting position is provided with a through hole for the screw rod to pass through and a plurality of screw holes located around the through hole, the lower end of the sleeve is provided with a fixing seat and a stud located below the fixing seat, a sealing ring is arranged between the fixing seat and the mounting position, and the lower end of the sleeve is fixed at the bottom of the pot body by passing the stud through the screw holes.

9. The automatic lifting chafing dish of claim 1, wherein the upper edge of the dish body is further provided with a dish cover with a handle.

10. The automatic lifting hot pot as claimed in any one of claims 1 to 9, wherein a motor base is provided in the heating base, the motor base has an opening part facing downwards or towards the side and a cover covering the opening part, and the top of the motor base is provided with an output hole below the screw; the stepping motor is fixed in the motor base, and the output shaft of the stepping motor upwards passes through the output hole and is directly connected with the lower tail end of the screw rod.

Technical Field

The invention relates to the field of electric appliances, in particular to an automatic lifting hot pot.

Background

The hot pot is a favorite cooking method in most areas of China, particularly in autumn and winter, and a family or a friend party often uses the hot pot for cooking, so that the hot pot has the advantages of diversified cooked food materials, low requirement on cooking skills, random adjustment of taste and the like. However, one of the biggest pain points of users during the use of chafing dish is: after food is put into the pot each time, other food materials are put into the pot without eating the food, and some food is boiled for too long time and tastes.

In order to solve the pain of the user, in recent years, electric lifting hot pots appear in the market, a motor is connected with a worm through a speed reducer, and a telescopic rod is driven by the worm to drive a food tray to lift at the center of the hot pot. Corresponding patent application technical schemes also disclose related implementation schemes, for example, CN2018100328404 discloses a split type lifting hot pot, and CN2018200544413 discloses a lifting driving module for lifting hot pot, wherein the disclosed technical schemes are that a worm gear is used for driving and reducing speed to drive a screw to stretch and lift so as to drive a food tray to lift according to a sleeve on the basis of motor driving. For another example, CN2017108902163 discloses a screw-type lifting chafing dish, which adopts the technical scheme that a motor drives a bevel gear to drive a screw to drive a food tray to lift in a sleeve. These solutions have at least the following drawbacks:

firstly, the structure is complex. Because the motor is adopted to drive the screw rod to stretch and descend through the driving structure matched with the speed reducer, the worm and the turbine so as to drive the food tray to ascend and descend according to the sleeve, the overall structure is complex, the realization cost is overhigh, and the complex structure is not beneficial to the size miniaturization of the chafing dish and the production and assembly.

Secondly, the reliability is lower. The food tray mainly shows two aspects, firstly, a very high sleeve is arranged in the middle of the food tray, the distance is too large when the screw rod is lifted, the stroke is too long, when the screw rod is lifted to the maximum position, the food in the food tray is placed unevenly, the stability of the food tray is poor, the screw rod is easy to incline, and the phenomena of lifting and clamping stagnation of the screw rod and the like are caused; secondly, sealing reliability is relatively poor, although there is the silica gel sealing washer between lifter and fixed cover, long-term high temperature is used, lifter up-and-down motion's friction, the soup material of chafing dish and edible material leak easily and lead to going up and down to feel the jamming, drive mechanism and motor damage, the poor and not long service life of reliability.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the automatic lifting hot pot, the food basket can smoothly move according to the sleeve in the pot body and can be lifted to the required height as required, the integral structure is simple, and the reliability is higher.

The invention provides an automatic lifting hot pot, which comprises a heating base, a pot body and a food basket, wherein the inner side surface of an upper shell is provided with a heating body; the bottom of the pot body is provided with a sleeve which is arranged in an upward protruding way; a stepping motor and a screw rod connected with an output shaft of the stepping motor are arranged in the heating base, and the screw rod is positioned in the sleeve; the screw rod is screwed with a screw part and a permanent magnet fixed on the screw part, and a positioning part for limiting the screw part to rotate on the screw rod is also arranged in the sleeve; the bottom of the food basket is provided with a shaft hole and a magnetic conduction ring fixedly connected with the shaft hole, and the food basket is movably sleeved on the sleeve through the shaft hole.

In a preferred embodiment, the shaft hole is arranged at the center of the bottom of the food basket, the magnetic conduction ring is fixedly arranged above the shaft hole, and the height of the magnetic conduction ring is lower than the upper edge position of the food basket.

In a preferred embodiment, the upper end of the sleeve is provided with a guide sleeve, and the upper end of the screw rod is limited in the guide sleeve.

In a preferred embodiment, the upper end of the screw is provided with an upper limiting sheet which can not lead the screw to pass through.

In a preferred embodiment, a support is arranged on the upper shell of the heating base, a lower limiting sheet is arranged at the lower tail end of the screw rod, and the lower limiting sheet is limited on the support, so that the screw rod cannot horizontally move up and down and can only rotate according to the driving of an output shaft of the stepping motor.

In a preferred embodiment, the support is provided with a limiting hole which is larger than the body of the screw rod and smaller than the lower limiting sheet, the upper tail end of the screw rod penetrates through the limiting hole, the lower limiting sheet is positioned below the support, and the limiting sheet is limited on the support by a pressing ring fixed on the support.

In a preferred embodiment, the sleeve and the pot body are in an integral forming structure or a split connecting structure.

In a preferred embodiment, the bottom of the pot body is provided with a mounting position, the center of the mounting position is provided with a through hole for a screw to pass through and a plurality of screw holes positioned on the periphery of the through hole, the lower tail end of the sleeve is provided with a fixed seat and a stud positioned below the fixed seat, a sealing ring is arranged between the fixed seat and the mounting position, and the lower tail end of the sleeve is fixed at the bottom of the pot body by enabling the stud to pass through the screw holes.

In a preferred embodiment, the upper edge of the pot body is also provided with a pot cover with a handle.

In a preferred embodiment, a motor base is arranged in the heating base, the motor base is provided with an opening part facing downwards or towards the side edge and a sealing cover covering the opening part, and the top of the motor base is provided with an output hole positioned below the screw rod; the stepping motor is fixed in the motor base, and the output shaft of the stepping motor upwards passes through the output hole and is directly connected with the lower tail end of the screw rod.

Compared with the prior art, the invention has the following beneficial effects:

the invention adopts the stepping motor to directly drive the screw rod to rotate, has no speed reducing or transmission mechanism, the screwing piece (such as a nut) and the permanent magnet are fixed into a whole, and the rotation of the screwing piece is limited by the positioning piece, so when the stepping motor drives the screw rod to rotate, the screwing piece and the permanent magnet can only lift up and down, a magnetic force is generated between the magnetic conductive ring made of a martensitic stainless steel sleeve and the permanent magnet in the middle of the food basket, so when the screwing piece and the permanent magnet lift up and down, the food basket is driven to lift up and down together, and the screw rod, the screwing piece and the permanent magnet are hermetically arranged in the sleeve in the middle of the hot. Therefore, on one hand, the invention simplifies the whole structure, saves a complex transmission system, and the stepping motor can be separately arranged in an independent motor base, thereby not only isolating the heat of the heating body at the bottom of the hot pot through the motor base to improve the working reliability, but also being beneficial to assembly and maintenance; secondly, the reliability is improved, the screw element is adopted to drive the permanent magnet to move up and down to drive the food basket to move up and down, the movement transmission is magnetic force, direct contact and telescopic friction do not exist, and the movement driving part, the food basket and the hot pot soup and food materials are all isolated, so that leakage and clamping stagnation are not caused, and the pot body and the food basket of the hot pot are easy to clean.

Drawings

Fig. 1 is a schematic perspective view of an automatic lifting hot pot.

Fig. 2 is a schematic view of the internal structure of the automatic lifting chafing dish when the food basket is not lifted.

Fig. 3 is a perspective view of the food basket.

Fig. 4 is a schematic view of the internal structure of the automatic lifting chafing dish when the food basket is lifted.

FIG. 5 is a schematic view of a partial explosion structure of the pot and the heating base in a half-section state.

FIG. 6 is a schematic view of the structure of the sleeve mounted on the pot body.

The reference symbols in the drawings indicate the following meanings: 1-heating base, 11-control panel, 111-ascending key, 112-descending key, 12-heating body, 13-motor base, 131-transmission hole, 14-stepping motor, 15-sealing cover, 16-screw rod, 161-lower limiting sheet, 162-upper limiting sheet, 171-support, 172-pressing ring, 18-screwing piece, 19-permanent magnet, 2-pot body, 21-handle, 22-sleeve, 221-fixing seat, 222-stud, 23-installation position, 231-through hole, 232-screw hole, 24-sealing ring, 25-guide sleeve, 26-positioning piece, 3-food basket, 31-water through hole, 32-shaft hole, 33-magnetic conduction ring, 4-pot cover and 41-handle.

Detailed Description

To further clarify the technical solutions and effects adopted by the present application to achieve the intended purpose, the following detailed description is given with reference to the accompanying drawings and preferred embodiments according to the present application. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

As shown in figure 1, the invention discloses an automatic lifting hot pot, which comprises a heating base 1 and a pot body 2, wherein the inner side surface of an upper shell is provided with a heating element 12, the pot body 2 is arranged on the heating base 1 and used for cooking, the heating element 12 is generally an electric heating tube, an electric heating film or an electric heating wire, and the pot body 2 is heated and cooked when the heating element 12 is electrified and heated. Wherein, the pan body 2 is generally formed by die casting of aluminum alloy, and the inner surface of the pan body 2 is preferably sprayed with non-stick paint.

As shown in connection with fig. 2. Handles 21 are arranged at two opposite side edges of the pan body 2 for users to use conveniently. The bottom of the pan body 2 is provided with a sleeve 22 which is arranged in an upward protruding way, and the top end of the sleeve 22 is closed to prevent water, soup and the like in the pan body 2 from entering the sleeve 22 in the cooking process. The heating base 1 is internally provided with a stepping motor 14 and a screw 16 connected with an output shaft of the stepping motor 14, the screw 16 is positioned in a sleeve 22, and the stepping motor 14 drives the screw 16 to rotate in the sleeve 22. A screw 18 (for example, the screw 18 is a nut) and a permanent magnet 19 fixed to the screw 18 are screwed to the screw 16. A retainer 26 is also provided within the sleeve 22 for limiting rotation of the screw member 18 on the screw 16.

Referring to fig. 3, the food basket 3 is further provided with a plurality of water holes 31 on the side wall and the bottom. The bottom of the food basket 3 is provided with a shaft hole 32 and a magnetic conduction ring 33 fixedly connected with the shaft hole 32. The food basket 3 is generally made of SUS304 stainless steel, and the magnetic conduction ring 33 is preferably made of martensite stainless steel material, and then surface plating is carried out, so that the food basket has good magnetic conduction performance. The bore diameter of the shaft bore 32 is larger than the outer diameter of the sleeve 22 so that the sleeve 22 can pass through the shaft bore 32. The food basket 3 is sleeved on the sleeve 22 through the shaft hole 32, i.e. the upper end of the sleeve 22 passes through the shaft hole 32 of the food basket 3.

Referring to fig. 1 again, a control panel 11 is disposed on the heating base 1, and a raising button 111 for controlling the stepping motor 14 to rotate in a first direction and a lowering button 112 for controlling the stepping motor 14 to rotate in a reverse direction in the first direction are disposed on the control panel 11. In the state shown in fig. 2, after the user presses the up button 111, the stepping motor 14 drives the screw 16 to rotate in the first direction, since the lower end of the screw 16 is connected to the output shaft of the stepping motor 14, the screw 16 cannot move up and down in the sleeve 22, and the screw 18 is restricted from rotating by the positioning member 26, so that the screw 18 drives the permanent magnet 19 to move on the screw 16 to the upper end of the screw 16 during the rotation of the screw 16 in the first direction, a magnetic force is generated between the permanent magnet 19 and the magnetic ring 33 of the food basket 3, the food basket 3 is driven by the magnetic force to move upwards to the position shown in fig. 4 according to the direction of the sleeve 22 in the shaft hole 32, so as to jack up the food basket 3 from the soup in the pot 2, soup in the food basket 3 flows away from the water through hole 31, and the cooked food remains in the food basket 3, thereby realizing the separation of the food from the soup in the pot 2, the taste of the food materials can not be lost due to the cooking process time of part of the food materials in the pot body 2, and the use experience of users can be improved. Moreover, when the stepping motor 14 is used for pressing the lifting key 111 to be released, the stepping motor 14 stops rotating along with the pressing, so that the food basket 3 is jacked up to any height on the sleeve 22, and the requirement of lifting the food basket 3 by matching with the amount of the soup bases in the pot body 2 is met. On the contrary, when the user presses the down button 112, the stepping motor 14 rotates reversely in the first direction, so that the screw member 18 moves downward on the screw 16, and the food basket 3 is driven to move downward along the sleeve 22 by the magnetic force between the permanent magnet 19 and the magnetic conductive ring 33 of the food basket 3, so that the food basket 3 returns to the soup material of the pot body 2, thereby meeting the actual use requirement of repeatedly cooking food material by using the food basket 3 in the actual cooking of the user.

According to the food basket, the shaft hole 32 is preferably arranged at the center of the bottom of the food basket 3, the magnetic conduction ring 33 is fixedly arranged on the shaft hole 32, and the height of the magnetic conduction ring 33 is certainly lower than the upper edge position of the food basket 3, so that the defect that the gravity center of the food basket 3 is higher due to the fact that the sleeve is arranged on the food basket 3 in the prior art is overcome, the gravity center of the food basket 3 is more stable in the process of moving up and down by guiding the sleeve 22 in the shaft hole 33, the stability of the food basket 3 moving up and down along the sleeve 22 is further improved by guiding the sleeve 22 through the magnetic conduction ring 33, and the food basket 3 can move up and down along the sleeve 22 more stably and more smoothly to avoid clamping stagnation.

In addition, the screw 16 is kept in the vertical state in the sleeve 22 without being inclined, and is an important technical means for making the food basket 3 move up and down along the sleeve 22 more smoothly and smoothly to avoid the jamming. Therefore, the guide sleeve 25 is arranged at the upper tail end of the sleeve 22, the upper tail end of the screw 16 is limited in the guide sleeve 25, the defect of poor rigidity caused by the overlong cantilever of the screw 16 is avoided through the guide sleeve 25, and the screw 18 is ensured not to be inclined in the process of moving the screw 16 up and down so that the food basket 3 is clamped on the sleeve 22.

In addition, the upper end of the screw 16 is provided with an upper limiting piece 162 which prevents the screw 18 from passing through, and the upper limiting piece 162 limits the screw 18 to move upwards on the screw 16, so that the moving range of the screw 16 is limited between the bottom end of the screw 16 and the limiting piece 162.

As shown in connection with fig. 5. In order to further improve the stability of the screw 16, in one embodiment, the lower end of the screw 16 is provided with a lower limiting piece 161, the upper housing of the heating base 1 is provided with a support 171, and the lower limiting piece 161 is limited on the support 171, so that the screw 16 cannot move horizontally or vertically and can only rotate according to the output shaft of the stepping motor 14. For example, the support 171 is provided with a stopper hole having a size larger than the body of the screw 16 and smaller than the lower stopper 161, and after the upper end of the screw 16 is passed through the stopper hole of the support 171, the lower stopper 161 is located below the support 171, and is fixed to the support 171 by a pressing ring 172 so that the stopper 161 is installed in a stopper manner by the pressing ring 172. Wherein, the support 171 can be fixed on the upper shell of the heating base 1 by using a screw or the like.

In one embodiment, a motor base 13 is arranged in the heating base 1, the motor base 13 has an opening part facing downwards or towards the side, and the top of the motor base 13 is provided with an output hole positioned below the screw 16; step motor 14 is put into motor cabinet 13 from the opening and is fixed in motor cabinet 13 through components such as screw, and step motor 14's output shaft passes the output hole upwards and directly links to each other with the lower end of screw rod 16, then, uses a closing cap 15 lid to close to install on the opening of motor cabinet 13, has just accomplished step motor 14's installation, and this kind of structure makes things convenient for the assembly and is convenient for dismantle the maintenance to step motor 14. In addition, the motor base 13 can also isolate the heat generated by the heating body 12 from radiating to the stepping motor 14, which is beneficial to improving the working reliability of the stepping motor 14.

For example, the lower end of the screw 16 is provided with a transmission hole, and the output shaft of the stepping motor 14 is inserted into the transmission hole of the screw 16, so that the output shaft of the stepping motor 14 is in transmission connection with the lower end of the screw 16.

In addition, the sleeve 22 and the pan body 2 may be an integrally formed structure or a separate connection structure. In combination with fig. 6, how to fix the lower end of the sleeve 22 at the bottom of the pan body 2 when the sleeve 22 and the pan body 2 are in a split connection structure is shown. Specifically, the bottom of the pot body 2 is provided with a mounting position 23, the center of the mounting position 23 is provided with a through hole 231 through which the screw 16 can pass and a plurality of screw holes 232 positioned on the periphery of the through hole 231, the lower end of the sleeve 22 is provided with a fixed seat 221 and a stud 222 (for example, the stud 222 is a welding screw) positioned below the fixed seat 221, a seal ring 24 is arranged between the fixed seat 221 and the mounting position 23, and the lower end of the sleeve 22 can be fixed to the bottom of the pot body 2 by screwing the stud 222 to the end of the stud 222 through the screw holes 232 and then using a nut.

Furthermore, as shown in fig. 1, fig. 2 and fig. 4, the invention discloses an automatic lifting hot pot, which further comprises a pot cover 4 with a handle 41, wherein the handle 41 is preferably a cubic handle capable of forming a three-point support with the body of the pot cover 4 so that the pot cover 4 can be vertically placed. The upper end of the sleeve 22 is not higher than the upper edge of the pot body 2, so that when the food basket 3 is not lifted, the pot cover 4 can cover the upper edge of the pot body 2, and the soup or food in the pot body 2 can be heated and cooked more quickly through the pot cover 4, as shown in fig. 1 or fig. 2. When the food basket 3 needs to be lifted to add food materials into the food basket 3 or take out cooked food materials in the food basket 3, after the pot cover 4 needs to be uncovered, the lifting key 111 is pressed to control the food basket 3 to be lifted out of soup materials of the pot body 2, and when the food basket 3 is located at the highest position of the sleeve 22, if the size of the food basket 3 is high, the pot cover 4 can not be covered on the pot body 2; only when the food basket 3 is in a short size or even a disc-shaped structure and the upper limit piece 162 of the screw 16 is in a proper position to enable the food basket 3 to be at the highest position of the sleeve 22, and the highest position of the food basket 3 does not exceed the upper end edge of the pot body 2, the pot cover 4 can still cover the pot body 2 to be beneficial to keeping the cooked food warm in the food basket 3.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.