CN217338273U - Frying and baking machine - Google Patents

Abstract

The utility model discloses a frying and baking machine, including the lower cover subassembly that has the heating element, including closing the lid position, half the position of opening the lid, rising the position, shakeout the upper cover subassembly of position, the upper cover subassembly is connected with the lower cover subassembly through hinge structure, and hinge structure makes the upper cover subassembly have three kinds of states of going up and down, rotating and going up and down and adding the rotation relative to the lower cover subassembly, hinge structure includes upper hinged member, lower hinged member, sets up the linear bearing between upper hinged member and lower hinged member, when the upper cover subassembly is in the rotation state, can be rotated to half the position of opening the lid by closing the lid position; when the upper cover component is in a lifting state, the upper cover component can be moved upwards from a cover closing position to a lifting position; when the upper cover component is in a lifting and rotating state, the upper cover component can rotate from a lifting position to a flattening position. The utility model discloses can ensure the smooth lift of upper cover subassembly, be favorable to reducing the extrusion of upper cover subassembly to eating the material then, promote the user experience of user when using.

Description

Frying and baking machine

Technical Field

The utility model belongs to the technical field of domestic cooking appliance, especially, relate to a fry in shallow oil roast machine.

Background

With the improvement of living standard, various household electrical appliances for cooking, such as electric ovens, electric chafing dishes, frying and baking machines (electric baking pans), electric barbecue grills, etc., are emerging. The frying and roasting machine generally comprises a lower cover assembly with a lower heating assembly and an upper cover assembly with an upper heating assembly, wherein when the upper cover assembly is covered and attached to the lower cover assembly, the upper cover assembly is in a balance position, and a roasting cavity for placing food materials to be processed is formed between the upper cover assembly and the lower cover assembly. In addition, one side of the upper cover component and the lower cover component form liftable rotary connection through a hinge structure, so that the upper cover component can rotate for about 105 degrees from a balance position relative to the lower cover component and is positioned at an inclined opening position, and can stably rise to a certain degree to change the height of a baking cavity between the upper cover component and the lower cover component, and the upper cover component is suitable for food materials of different types and thicknesses. Certainly, the upper cover assembly can also be rotated 180 degrees to the flattening position, and food materials can be fried and roasted on the lower cover assembly and the upper cover assembly, so that the cooking efficiency is improved.

However, the existing frying and baking machine still has the following technical defects: the upper cover assembly at the balance position is lifted by pushing the food material per se, namely, when the height of the food material is less than or equal to that of the baking cavity, the upper cover assembly is positioned at the balance position; when the height of the food material is larger than that of the baking cavity, the upper cover assembly cannot be covered to a balance position, the upper cover assembly can stably rise under the pushing of the food material, and at the moment, the weight of the upper cover assembly is completely acted on the food material. Since the hinge structure mainly considers the convenience of rotation and the positioning during rotation, the problem of excessive frictional resistance exists in the lifting of the upper cover assembly. When the food material is a bulky fermented food, the friction resistance of the upper cover assembly is large, and the food material is pressed heavily, so that the food material is flattened and deformed, the shape of the food material is influenced, and the taste of the food material after fermentation and cooking is influenced. In addition, because the upper cover component is in a free lifting state in the lifting process, when the food material placing position is eccentric or the cooked food material is in an unbalanced shape or expansion with high middle and low edge, the upper cover component can be inclined to a certain degree along with the food material, and then the upper cover component is easy to generate a clamping stagnation phenomenon in the lifting process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fry in shallow oil roast machine can ensure the smooth lift of upper cover subassembly, is favorable to reducing the extrusion of upper cover subassembly to eating the material then, promotes the user experience of user when using.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a frying and baking machine comprises a lower cover assembly with a heating assembly and an upper cover assembly with a cover closing position, a half cover opening position, a lifting position and a flattening position, wherein the upper cover assembly is connected with the lower cover assembly through a hinge structure, the hinge structure enables the upper cover assembly to have three states of lifting, rotating and lifting and rotating relative to the lower cover assembly, the hinge structure comprises an upper hinge part, a lower hinge part and a linear bearing arranged between the upper hinge part and the lower hinge part, and when the upper cover assembly is in a rotating state, the upper cover assembly can rotate from the cover closing position to the half cover opening position; when the upper cover component is in a lifting state, the upper cover component can be moved upwards from a cover closing position to a lifting position; when the upper cover component is in a lifting and rotating state, the upper cover component can rotate from a lifting position to a flattening position.

Similar to the prior art, the upper cover component is arranged on the lower cover component, so that the baking cavity can be formed between the upper cover component and the lower cover component. When the food materials need to be fried and roasted, the processed food materials can be placed in the roasting cavity, and then the heating components of the lower cover component and the upper cover component can be started simultaneously or independently, so that the food materials in the roasting cavity can be subjected to cooking processing such as single-sided frying and roasting or double-sided frying and roasting.

As a frying and baking machine, an upper cover component is connected with a lower cover component through a hinge structure, so that the upper cover component has three states of lifting, rotating and lifting and rotating relative to the lower cover component, and correspondingly, the upper cover component has a cover closing position attached to the lower cover component, a half cover opening position opened and positioned at about 105 degrees, a lifting position moved upwards stably and a flattening position opened for 180 degrees.

Particularly, the hinge structure between the upper cover assembly and the lower cover assembly mainly considers how to conveniently rotate and position the upper cover assembly and the lower cover assembly to a half-open cover position and a flat position, so that a large frictional resistance exists when the upper cover assembly and the lower cover assembly of the existing frying and roasting machine move in the vertical direction, when the upper cover assembly is pushed by food materials to move upwards, the frictional resistance directly acts on the food materials, and the 'clamping stagnation' of the upper cover assembly during the lifting process can be caused.

The hinge structure of the present invention includes an upper hinge member, a lower hinge member, and a linear bearing disposed between the upper hinge member and the lower hinge member. It will be appreciated that the upper cover assembly may be connected to the upper hinge member, the lower cover assembly connected to the lower hinge member, and the linear bearing hinged to either the upper hinge member or the lower hinge member. Therefore, when the upper cover assembly is in a rotating state, the upper cover assembly can rotate from a cover closing position to a half cover opening position, and the linear bearing does not work; when the upper cover assembly is in a lifting state, the upper cover assembly can be moved upwards from a cover closing position to a lifting position, the linear bearing is in effect, and the upper hinge part or the lower hinge part is not in effect; when the upper cover assembly is in a lifting and rotating state, the upper cover assembly can rotate to a flattening position from a lifting position, and the linear bearing, the upper hinge assembly or the lower hinge assembly play a role at the same time.

That is to say, the utility model discloses a hinge subassembly shares two kinds of functions of rotation and lift on linear bearing and last articulated elements or articulated elements down, plays the effect of each other's duties, has satisfied two kinds of functional requirements of rotation and lift from dividing. The upper cover component slides and rises relative to the lower cover component through the linear bearing, so that the frictional resistance of the upper cover component during rising and falling can be greatly reduced, and the upper cover component can be prevented from freely shaking during rising and falling.

Preferably, the upper hinge part comprises a lifting rod connected with the linear bearing in a sliding manner, a rotating pin rotationally connected with the lower hinge part is arranged on the outer side of the linear bearing, the hinge structure further comprises a lifting rod rotation limiting structure, and when the upper cover component is in a lifting state, the lifting rod rotation limiting structure enables the lifting rod to be positioned in a rotating manner; when the upper cover assembly is in a lifting and rotating state, the lifting rod rotation limiting structure releases the rotation positioning of the lifting rod.

In this embodiment, the upper hinge member includes a lifting rod slidably connected to the linear bearing, and as can be seen from the foregoing, the upper cover assembly should be connected to the lifting rod. Therefore, the upper cover component can form smooth up-and-down lifting movement through the lifting rod and the linear bearing.

Because the outer side of the linear bearing is provided with the rotating pin which is rotationally connected with the lower hinge piece, the linear bearing can form rotational connection relative to the lower hinge piece, and then the upper cover assembly forms rotational connection relative to the lower cover assembly. In addition, the hinge structure further comprises a lifting rod rotation limiting structure which can limit the lifting rod to rotate together with the linear bearing. Therefore, when the upper cover assembly is in a lifting state, the lifting rod rotation limiting structure enables the lifting rod to be positioned in a rotating mode. That is, only the linear bearing is operated at this time, so that the upper cover assembly is smoothly lifted and lowered, and the lifting lever cannot rotate relative to the lower hinge member together with the linear bearing. When the upper cover assembly is in a lifting and rotating state, the lifting rod rotation limiting structure releases the rotation positioning of the lifting rod, and at the moment, on one hand, the linear bearing acts, and the upper cover assembly can smoothly lift relative to the lower cover assembly; on the other hand, the lifting rod and the linear bearing can rotate relative to the lower hinge piece together, so that the upper cover assembly can smoothly rotate relative to the lower cover assembly.

Preferably, the lifting rod rotation limiting structure comprises a limiting hole which is arranged on the lower hinge part and has an aperture matched with the outer diameter of the linear bearing, and when the upper cover component is in a lifting state, the lower part of the linear bearing is positioned in the limiting hole; when the upper cover component is in a lifting and rotating state, the linear bearing is separated from the limiting hole.

The lower articulated element is provided with the limiting hole with the aperture matched with the outer diameter of the linear bearing, so that when the upper cover component is in a lifting state, the lower part of the linear bearing is positioned in the limiting hole, and the lifting rod and the linear bearing at the moment can not rotate relative to the lower articulated element; when the upper cover assembly needs to be rotated to the flattening position, the upper cover assembly can be lifted upwards to enable the upper cover assembly to be in a lifting and rotating state, and the linear bearing at the moment is separated from the limiting hole, so that the lifting rod and the linear bearing can rotate relative to the lower hinged part, and the upper cover assembly can be rotated to the flattening position.

Preferably, the upper hinge part comprises a hinge rod, the lower end of the hinge rod is hinged with the upper end of the lifting rod, and a hinge rod rotation limiting structure capable of enabling the upper cover assembly to be positioned at a half-open-cover position is arranged between the hinge rod and the lifting rod.

As can be seen from the foregoing, the linear bearing is rotatably connected to the lower hinge, that is, the upper cover assembly is rotatably connected to the lower hinge and further to the lower cover assembly via the linear bearing. In this scheme, go up the articulated elements and include the hinge bar, hinge bar lower extreme and lifter upper end are articulated to make the upper cover subassembly can form to rotate the connection to the alignment bearing, therefore make things convenient for the upper cover subassembly to rotate to half the position of uncapping by closing the lid position.

Preferably, the hinge rod rotation limiting structure comprises a limiting protrusion arranged at the upper end of the lifting rod, and the side surface of the hinge rod abuts against the limiting protrusion when the upper cover assembly is in the half-open cover position.

Because the upper end of the lifting rod is provided with the limiting protrusion, when the upper cover assembly rotates to the half-open-cover position, the side face of the hinge rod abuts against the limiting protrusion, and therefore the upper cover assembly is reliably positioned on the half-open-cover position.

Preferably, the lower hinge part comprises a support arranged on the lower cover assembly, a sliding groove is formed in one side of the support, the rotating pin is movably arranged in the sliding groove, and a spring which downwards abuts against the rotating pin is arranged in the sliding groove.

It will be appreciated that, since the pivot pin is movably disposed in the slide groove on one side of the bracket, that is, the pivot pin can rotate in the slide groove and move up and down in the slide groove. In the initial state, the spring presses the rotating pin downwards, so that the rotating pin is positioned at the lower part of the sliding groove. When the upper cover assembly needs to be rotated to the flattening position, the upper cover assembly can be lifted upwards, the rotating pin overcomes the elastic force of the spring and moves upwards in the sliding groove until the lower part of the linear bearing is separated from the limiting hole, and then the upper cover assembly can be rotated to the flattening position.

Preferably, a lifting groove is formed in the middle of the support, the sliding grooves are formed in the side faces of the support, located on the two sides of the lifting groove, respectively, and the rotating pins movably located in the sliding grooves on the corresponding side are arranged on the two sides of the linear bearing respectively.

Because the two sides of the linear bearing are respectively provided with the rotating pin which can movably locate in the sliding groove at the corresponding side, the two sides of the linear bearing can be effectively supported, the linear bearing is prevented from being inclined due to uneven stress, and the displacement of the linear bearing on the bracket can be avoided.

Preferably, a detachable limiting disc is arranged at the lower end, penetrating out of the linear bearing, of the lifting rod, and when the upper cover assembly is located at the lifting position, the limiting disc abuts against the lower end of the linear bearing.

The limiting disc can effectively limit the lifting rod when moving upwards. It can be understood that the limiting disc can be fixed at the lower end of the linear bearing by a fastening screw from bottom to top, so that the installation is convenient.

Preferably, the spring presses against one end of the rotating pin and is fixedly connected with an inwards concave arc-shaped pressing piece, and the radius of the arc-shaped pressing piece is 1-1.1 times of that of the rotating pin.

It will be appreciated that if the cylindrical spring directly presses against the outer circumferential surface of the rotation pin, the rotation of the rotation pin is hindered. The utility model discloses support at the spring and press the arc preforming that the rotating pin one end is consolidated with the indent to can reduce the frictional resistance between spring and the rotating pin effectively.

Particularly, the radius of the arc-shaped pressing piece is controlled to be 1-1.1 times of the radius of the rotating pin, so that the contact area and the frictional resistance between the rotating pin and the arc-shaped pressing piece are reduced, the arc-shaped pressing piece can be positioned relative to the rotating pin, and the sliding is avoided.

Preferably, the top surface of the sliding chute is provided with a positioning column, the upper end of the spring is sleeved on the positioning column, and when the upper cover assembly is in a lifting position, the rotating pin moves upwards and abuts against the positioning column.

In the scheme, the positioning column can reliably position the upper end of the spring on one hand, and can position the rotating pin when the rotating pin moves upwards on the other hand, so that the up-and-down moving stroke of the rotating pin and the linear bearing is conveniently limited, and the upper cover assembly is accurately positioned at a lifting position.

Therefore, the utility model discloses following beneficial effect has: can ensure the smooth lift of upper cover subassembly, be favorable to then reducing the extrusion of upper cover subassembly to eating the material, promote the user experience of user when using.

Drawings

Fig. 1 is a schematic structural view of the upper cover assembly of the present invention in a half-open position.

Fig. 2 is a schematic view of an exploded structure of the hinge structure of the present invention.

Fig. 3 is a schematic view of a connection structure of the lifting rod and the linear bearing.

Fig. 4 is a schematic structural view of the hinge rod and the lifting rod when the upper cover assembly is in a half-open position.

Fig. 5 is a schematic view of the connection structure of the spring and the arc-shaped pressing piece.

In the figure: 1. the lower cover assembly 2, the upper cover assembly 3, the upper hinge 31, the lifting rod 311, the limiting protrusion 32, the limiting disc 33, the hinge rod 4, the lower hinge 41, the limiting hole 2, the bracket 421, the sliding groove 422, the lifting groove 423, the positioning column 43, the spring 4, the arc pressing sheet 5, the linear bearing 51 and the rotating pin.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description.

As shown in fig. 1, a frying and roasting machine comprises a lower cover assembly 1 with a heating component and an upper cover assembly 2 which is arranged on the lower cover assembly and also has the heating component, wherein the upper cover assembly is connected with the lower cover assembly through a hinge structure, the hinge structure enables the upper cover assembly to have three states of lifting, rotating and lifting and rotating relative to the lower cover assembly, correspondingly, the upper cover assembly comprises a cover closing position which is attached to the lower cover assembly, a half-open cover position which is opened and positioned at about 105 degrees, a lifting position which moves upwards smoothly and a flattening position which is opened at 180 degrees. When the upper cover component is in the cover closing position which is close to the lower cover component, a baking cavity can be formed between the upper cover component and the lower cover component.

When the food materials need to be fried and roasted, the processed food materials can be placed in the roasting cavity, and then the heating components of the lower cover component and the upper cover component can be started simultaneously or independently, so that the food materials in the roasting cavity can be subjected to cooking processing such as single-sided frying and roasting or double-sided frying and roasting. Certainly, the upper cover assembly can also be rotated to the flattening position, and the food can be fried and roasted on the upper cover assembly and the lower cover assembly simultaneously, so that the cooking efficiency is improved.

In order to reduce frictional resistance when the upper cover assembly is lifted, the hinge structure includes an upper hinge 3, a lower hinge 4, and a linear bearing 5 disposed between the upper hinge and the lower hinge. When the upper cover component is in a rotating state, the upper cover component can rotate from a cover closing position to a half cover opening position; when the upper cover assembly is in a lifting state, the upper cover assembly can be moved upwards to a lifting position from a cover closing position; when the upper cover component is in a lifting and rotating state, the upper cover component can rotate from a lifting position to a flattening position.

It can be known that, in the existing frying and baking machine, the main consideration of the hinge structure between the upper cover assembly and the lower cover assembly is how to facilitate the rotation of the upper cover assembly and to position the upper cover assembly to the half-opened position and the flat position, therefore, when the upper cover assembly and the lower cover assembly of the existing frying and baking machine move in the up-and-down direction, a large frictional resistance exists, and when the upper cover assembly moves upwards under the pushing of the food material, the frictional resistance can directly act on the food material and can cause the 'jamming' of the upper cover assembly during the lifting and the lowering.

And the utility model discloses set up linear bearing between last articulated elements and lower articulated elements. When the upper cover assembly is in a rotating state, the upper cover assembly can rotate from a cover closing position to a half cover opening position, and the linear bearing does not work; when the upper cover assembly is in a lifting state, the upper cover assembly can be moved upwards from a cover closing position to a lifting position, the linear bearing is in effect, and the upper hinge part or the lower hinge part is not in effect; when the upper cover assembly is in a lifting and rotating state, the upper cover assembly can rotate to a flattening position from a lifting position, and the linear bearing, the upper hinge assembly or the lower hinge assembly play a role at the same time.

That is to say, the utility model discloses a hinge subassembly shares on linear bearing and last articulated elements or articulated elements down two kinds of functions of rotation and lift, plays the effect of each official job, has satisfied two kinds of functional requirements of rotation and lift from dividing. Because the upper cover component slides and rises relative to the lower cover component through the linear bearing, the frictional resistance when the upper cover component rises and falls can be greatly reduced, and the upper cover component can be prevented from freely shaking when rising and falling.

It should be noted that the upper cover assembly may be connected to the upper hinge member, the lower cover assembly may be connected to the lower hinge member, and the linear bearing may be hinged to the upper hinge member, the lower hinge member, or both the upper hinge member and the lower hinge member.

Preferably, as shown in fig. 2 and 3, the upper hinge member includes a lifting rod 31 inserted into the linear bearing and slidably connected to the linear bearing, and a transverse rotation pin 51 is provided outside the linear bearing and rotatably connected to the lower hinge member. That is, the upper cover assembly connected to the upper hinge may be rotatably connected to the lower hinge through the lifting rod and the linear bearing.

In addition, the hinge structure also comprises a lifting rod rotation limiting structure which can limit the lifting rod to rotate relative to the lower hinge piece. When the upper cover assembly rises and is in a lifting state, the lifting rod rotates the limiting structure to enable the lifting rod to rotate and position, namely, only the linear bearing plays a role at the moment, so that the upper cover assembly is lifted smoothly, and the lifting rod and the linear bearing cannot rotate relative to the lower hinge piece at the moment; when the upper cover assembly is in a lifting and rotating state, the lifting rod rotation limiting structure releases the rotation positioning of the lifting rod, and at the moment, on one hand, the linear bearing acts, and the upper cover assembly can smoothly lift relative to the lower cover assembly; on the other hand, the lifting rod and the linear bearing can rotate relative to the lower hinge piece together, so that the upper cover assembly can smoothly rotate relative to the lower cover assembly.

As can be seen from the foregoing, the upper cover assembly should be connected with the lifting rod. Therefore, the upper cover component can form smooth up-and-down lifting movement through the lifting rod and the linear bearing.

It should be noted that, similar to the existing frying and baking machine, the upper cover assembly of the present invention is located at the cover closing position in the initial state, and when we make the upper cover assembly rotate to the half-open position relative to the lower cover assembly, the upper cover assembly is in the rotating state; when the upper cover assembly is lifted to the lifting position, the upper cover assembly is in a lifting state; when the upper cover assembly is located at the half-open cover position, the upper cover assembly can be pulled upwards, then the upper cover assembly is continuously rotated to the flattening position, and the upper cover assembly is in a lifting and rotating state at the moment; when the upper cover assembly is lifted to the lifting position, the upper cover assembly can be rotated to the flattening position, and the upper cover assembly is in the lifting and rotating state.

Furthermore, the lifting rod rotation limiting structure comprises a limiting hole 41 which is arranged on the lower hinge part and has an aperture matched with the outer diameter of the linear bearing, when the upper cover component is in a lifting state, the lower part of the linear bearing is positioned in the limiting hole, and the lifting rod and the linear bearing cannot rotate relative to the lower hinge part at the moment; when the upper cover assembly needs to be rotated to the flattening position, the upper cover assembly can be lifted upwards, so that the upper cover assembly is in a lifting and rotating state, the linear bearing is separated from the limiting hole, the lifting rod can lift relative to the linear bearing, the lifting rod and the linear bearing can rotate relative to the lower hinge piece, and then the upper cover assembly can be rotated to the flattening position.

As another preferred embodiment, the upper hinge member includes a hinge rod 33, and the lower end of the hinge rod is hinged to the upper end of the lifting rod, so that the upper cover assembly can be rotatably connected to the lifting rod and the linear bearing. In addition, a hinge rod rotation limiting structure capable of enabling the upper cover assembly to be positioned at the half-open-cover position can be further arranged between the hinge rod and the lifting rod, so that the upper cover assembly can be conveniently rotated to the half-open-cover position from the cover closing position.

Further, as shown in fig. 4, the hinge lever rotation limiting structure includes a limiting protrusion 311 provided at an upper end of the lifting lever, and the hinge lever is laterally abutted against the limiting protrusion when the upper cover assembly is rotated to the half-open position, so that the upper cover assembly is reliably positioned at the half-open position. Of course, the hinge end of the hinge rod should be formed in a semicircular shape so that the hinge rod can be rotated with respect to the lifting rod.

In order to facilitate the rotating connection between the linear bearing and the thin rod of the lower hinge, as shown in fig. 2 and 3, the lower hinge includes a bracket 42 disposed on the lower cover assembly, a sliding groove 421 extending in the vertical direction is disposed on one side of the bracket, and the rotating pin is disposed in the sliding groove in a manner of moving up and down, and at this time, the rotating pin can rotate in the sliding groove and also move up and down in the sliding groove.

Further, a cylindrical spring 43 is provided in the slide groove to press the rotation pin downward. That is, in the initial state, the spring presses the rotation pin downward, so that the rotation pin is positioned at the lower portion of the chute. When the upper cover assembly needs to be rotated to the flattening position, the upper cover assembly can be lifted upwards to the lifting position, the lifting rod connected with the upper cover assembly drives the linear bearing to move upwards together, and therefore the rotating pin overcomes the elastic force of the spring to move upwards in the sliding groove until the lower portion of the linear bearing is separated from the limiting hole, and the upper cover assembly can be rotated to the flattening position.

Of course, it is necessary to provide a corresponding movement limiting structure between the lifting rod and the linear bearing, so that the lifting rod can drive the linear bearing to move upward together after moving upward for a certain distance relative to the linear bearing.

Specifically, we can wear out linear bearing's lower extreme at the lifter and set up spacing dish 32, and spacing dish passes through the screw and forms detachable connection with the lifter lower extreme to easy to assemble. When the upper cover component is in a lifting position, the limiting disc is attached to the lower end of the linear bearing, so that the lifting rod is limited when moving upwards.

Furthermore, a lifting groove 422 can be arranged in the middle of the support, the sliding grooves are respectively arranged on the opposite side surfaces of the support positioned on the two sides of the lifting groove, namely, the lifting groove divides the support into a left half and a right half, and the two sides of the linear bearing are respectively provided with the rotating pin movably positioned in the sliding groove on one corresponding side, so that the two sides of the linear bearing can be effectively supported, the linear bearing is prevented from being inclined due to uneven stress, and the linear bearing can be prevented from freely moving on the support.

In addition, as shown in fig. 5, a concave arc-shaped pressing sheet 44 can be welded at the lower end of the spring abutting against the rotating pin, and the radius of the arc-shaped pressing sheet is 1-1.1 times of the radius of the rotating pin, so that the contact area and the frictional resistance between the rotating pin and the arc-shaped pressing sheet can be reduced, the arc-shaped pressing sheet can be positioned relative to the rotating pin, and the lower end of the spring is prevented from sliding.

Preferably, a positioning column 423 is arranged on the top surface of the sliding groove, the upper end of the spring is sleeved on the positioning column, and when the upper cover assembly is located at the lifting position, the rotating pin moves upwards and abuts against the positioning column.

In this scheme, the reference column can make the upper end of spring reliably fix a position on the one hand, avoids the spring to appear shifting phenomenon, and on the other hand, when the rotating pin upwards moved to when leaning on the reference column, can injectd rotating pin and linear bearing's the stroke that reciprocates, and then made the upper cover subassembly accurately fix a position at the rising position.

It is understood that various changes and modifications other than those described in the preferred embodiments described above may be made by those skilled in the art without departing from the spirit of the invention, and the scope of the invention is defined by the appended claims.

Claims (10)

1. A frying and baking machine comprises a lower cover assembly with a heating assembly and an upper cover assembly with a cover closing position, a half cover opening position, a lifting position and a flattening position, wherein the upper cover assembly is connected with the lower cover assembly through a hinge structure, and the hinge structure enables the upper cover assembly to have three states of lifting, rotating and lifting and rotating relative to the lower cover assembly; when the upper cover assembly is in a lifting state, the upper cover assembly can be moved upwards to a lifting position from a cover closing position; when the upper cover component is in a lifting and rotating state, the upper cover component can rotate from a lifting position to a flattening position.

2. The frying and roasting machine of claim 1, wherein the upper hinge member comprises a lifting rod slidably connected to the linear bearing, a rotating pin rotatably connected to the lower hinge member is provided at an outer side of the linear bearing, the hinge structure further comprises a lifting rod rotation limiting structure, and the lifting rod rotation limiting structure rotatably positions the lifting rod when the upper cover assembly is in a lifting state; when the upper cover assembly is in a lifting and rotating state, the lifting rod rotation limiting structure releases the rotation positioning of the lifting rod.

3. The frying and baking machine as claimed in claim 2, wherein the elevating rod rotation limiting structure includes a limiting hole disposed on the lower hinge member and having an aperture matching with the outer diameter of the linear bearing, and when the upper cover assembly is in the elevating state, the lower portion of the linear bearing is located in the limiting hole; when the upper cover component is in a lifting and rotating state, the linear bearing is separated from the limiting hole.

4. The frying and roasting machine of claim 2, wherein the upper hinge member comprises a hinge rod, a lower end of the hinge rod is hinged to an upper end of the lifting rod, and a hinge rod rotation limiting structure is provided between the hinge rod and the lifting rod for positioning the upper cover assembly in the half-open position.

5. The frying and roasting machine as claimed in claim 4, wherein the hinge rod rotation limiting structure comprises a limiting protrusion provided at an upper end of the lifting rod, and the hinge rod is laterally abutted against the limiting protrusion when the upper cover assembly is in the half-open position.

6. The frying and roasting machine of claim 2, wherein the lower hinge member comprises a bracket disposed on the lower cover member, a sliding groove is disposed on one side of the bracket, the rotating pin is movably disposed in the sliding groove, and a spring is disposed in the sliding groove and downwardly presses the rotating pin.

7. The frying and roasting machine as claimed in claim 6, wherein the supporting frame has a lifting slot in the middle, the sliding slots are respectively formed on the side surfaces of the supporting frame located at both sides of the lifting slot, and the rotating pins movably located in the sliding slots at the corresponding side are respectively formed on both sides of the linear bearing.

8. The frying and roasting machine as claimed in claim 3, wherein a detachable stopper plate is provided at a lower end of the elevating rod through which the linear bearing passes, and abuts against the lower end of the linear bearing when the upper cover assembly is in the raised position.

9. The frying and roasting machine of claim 6, wherein the spring is fixed with an inwardly concave arc-shaped pressing piece against one end of the rotating pin, and the radius of the arc-shaped pressing piece is 1-1.1 times of the radius of the rotating pin.

10. The frying and baking machine as claimed in claim 8, wherein a positioning post is provided on the top surface of the sliding slot, the upper end of the spring is fitted over the positioning post, and when the upper cover assembly is in the raised position, the rotating pin moves upward and abuts against the positioning post.

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