CN111972974B

CN111972974B - Two culinary art device step difference adjustment mechanism that open door and culinary art device thereof

Info

Publication number: CN111972974B
Application number: CN202010755193.7A
Authority: CN
Inventors: 邓严; 姚青; 曹骥
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-05-18
Anticipated expiration: 2040-07-31
Also published as: CN111972974A

Abstract

The invention relates to a step difference adjusting mechanism of a double-door cooking device and the cooking device thereof, which comprises an upper inner container, a lower inner container, a mounting plate, a front moving part, a rear moving part, a left moving part, a right moving part and a transmission structure, wherein the front moving part and the rear moving part can enable the upper inner container and the lower inner container to move front and back relatively, the left moving part and the right moving part can enable the upper inner container and the lower inner container to move left and right relatively, the transmission structure can be respectively transmitted to the front moving part and the rear moving part or the left moving part and the right moving part, the second control part at least comprises a first control position and a second control position, when the first control part is connected with the first control position of the second control part, the transmission structure drives the front moving part and the. The invention can realize the adjustment of the front and back or left and right step difference of the upper and lower door bodies, can realize the free conversion of the adjustment of the front and back step difference and the left and right step difference of the upper and lower door bodies, and can effectively avoid the influence of the step difference adjustment on the air tightness of the upper and lower inner containers.

Description

Two culinary art device step difference adjustment mechanism that open door and culinary art device thereof

Technical Field

The invention relates to the field of cooking devices, in particular to a step difference adjusting mechanism of a double-door cooking device and the cooking device.

Background

A cooking device with a double inner container, such as a steaming and baking integrated machine, generally has two door bodies arranged up and down, and each door body covers an opening of the corresponding inner container. With the popularization of various cooking devices, users have increasingly high requirements on the appearance quality of the cooking devices while paying attention to the cooking effect of the cooking devices. At present, two culinary art devices that open door when production, because of each spare part size, cooperation and installation error's accumulation, for guaranteeing the culinary art effect, often can lead to about and around two upper and lower door bodies the step difference uncontrollable to influence the outward appearance of complete machine, influence user's use and experience.

In order to solve the problems, the difference of the front and back steps of the door body is generally realized by adjusting the position of a door hinge at present, however, the position of the hinge is a key part which influences the sealing performance of the door body of the cooking device, and the improper position adjustment easily causes the air leakage of the door body to influence the cooking effect. In addition, two inner bags pass through the mode of fix with screw about current and connect, and the back is accomplished in the installation of the door body, and the poor regulation degree of difficulty of step increases to, the process of adjusting the hinge is loaded down with trivial details, influences production efficiency, and the poor regulation distance of current step is uncontrollable simultaneously, and the control range is very limited, can't solve the too big problem of two door step differences.

Disclosure of Invention

The invention aims to solve the first technical problem of providing a step difference adjusting mechanism of a double-door cooking device, which is convenient to adjust and can simultaneously realize bidirectional adjustment of a front step difference, a rear step difference and a left step difference and a right step difference.

The second technical problem to be solved by the invention is to provide a step difference adjusting mechanism of a double-door cooking device, which can realize free conversion of adjustment of front and back step differences and left and right step differences.

The third technical problem to be solved by the invention is to provide a step difference adjusting mechanism of a double-door cooking device, which cannot affect the sealing performance of an upper door body and a lower door body in the prior art.

The fourth technical problem to be solved by the present invention is to provide a cooking device with the above-mentioned dual door cooking device step adjusting mechanism, aiming at the prior art.

The technical scheme adopted by the invention for solving at least one technical problem is as follows: the utility model provides a poor adjustment mechanism of two culinary art device steps that open door, including last inner bag, lower inner bag and horizontal installation are between last inner bag and lower inner bag and with the fixed mounting panel of lower inner bag, characterized in that, still include the front and back moving member that enables upper inner bag and lower inner bag front and back relative motion, can make upper inner bag and lower inner bag left and right sides relative motion moving member and can drive the transmission structure to the above-mentioned front and back moving member or left and right moving member respectively, above-mentioned transmission structure includes first control piece and second control piece, above-mentioned second control piece has first control position and second control position at least, and when first control piece and the first control position cooperation of second control piece, transmission structure drive above-mentioned front and back moving member, and when the second control position cooperation of first control piece and second control piece, transmission structure drive above-mentioned left and right moving member.

Further, the transmission structure is arranged between the bottom surface of the upper liner and the upper surface of the mounting plate, and comprises a transmission shaft which is arranged along the left-right direction and can rotate by taking a central shaft of the transmission shaft as a center, the front-rear moving piece is a first rack arranged along the front-rear direction, the first rack is fixed at one position of the bottom surface of the upper liner and the upper surface of the mounting plate, and a first transmission gear which can be meshed with the tooth surface of the first rack is fixed on the transmission shaft. The transmission shaft is rotated, the first transmission gear rotates to drive the first rack, so that the upper inner container and the lower inner container move back and forth relatively, and the front and back step difference of the upper door body and the lower door body can be adjusted.

Furthermore, the left and right moving parts are second racks arranged along the left and right directions, the second racks are fixed at one of the bottom surface of the upper inner container and the upper surface of the mounting plate, the transmission structure further comprises a rotating shaft, a first transmission bevel gear and a second transmission bevel gear, a second transmission gear meshed with the tooth surface of the second rack is installed on the rotating shaft, the first transmission bevel gear is installed on the rotating shaft, and the second transmission bevel gear is installed on the transmission shaft and can be meshed with the first transmission bevel gear. The transmission shaft is rotated, the second transmission bevel gear rotates to drive the first transmission bevel gear to rotate, so that the rotation shaft is driven to rotate, the second transmission gear can drive the second rack to move along the left and right directions, the upper inner container and the lower inner container move left and right relatively, and the left and right step difference of the upper door body and the lower door body can be adjusted.

Further, the first control member is a boss convexly arranged on the outer surface of the transmission shaft, the second control member is a vertical block vertically fixed on the upper surface of the mounting plate, a through hole for the transmission shaft to penetrate through is arranged on the vertical block along the left-right direction, a first groove and a second groove which are respectively matched with the boss are respectively arranged on the inner circumferential surface of the through hole along the circumferential direction at intervals, the first groove and the second groove are respectively the first control position and the second control position, the first control member can be respectively clamped into the first groove and the second groove and can circumferentially slide along the first groove and the second groove, the first groove and the second groove are communicated through a through groove which axially extends, the first control member can be clamped into the through groove and can slide back and forth along the through groove to be clamped into the first control position or the second control position, and when the first control member is positioned in the first control position, the first transmission gear is meshed with the first rack, the first transmission bevel gear is separated from the second transmission bevel gear, and when the first control piece is positioned in the second control position, the first transmission bevel gear is meshed with the second transmission bevel gear, and the first transmission gear is separated from the first rack.

Further, the outer side end of the first groove is open and extends to the hole edge of the through hole. Therefore, the first control piece can be conveniently moved out of the through hole after the step difference is adjusted, so that the upper inner container and the lower inner container can be prevented from moving relatively due to misoperation.

Furthermore, in order to enable the upper inner container and the lower inner container to move forward and backward or move left and right relatively more stably, the inner container also comprises a guide structure for guiding the upper inner container and the lower inner container to move forward and backward or left and right relatively.

Preferably, the guide structure includes a guide sliding block fixed on the bottom surface of the upper inner container and a guide sliding groove fixed on the upper surface of the mounting plate and allowing the guide sliding block to slide forward and backward, and both sides of the lower end of the guide sliding block are respectively horizontally extended along the length direction thereof with a left guide bar and a right guide bar, and the left and right groove walls of the guide sliding groove are respectively recessed outwards along the length direction thereof to form a left guide groove and a right guide groove, and the left guide bar and the right guide bar are respectively clamped into the corresponding guide grooves and can slide left and right along the corresponding guide grooves. The guide sliding block slides back and forth along the guide sliding groove to guide the upper inner container and the lower inner container to slide back and forth, and the guide strips slide left and right along the corresponding guide grooves to guide the upper inner container and the lower inner container to slide left and right.

Further, the inner container comprises a locking structure for locking the upper inner container and the lower inner container. Thereby can be with upper and lower inner bag firm locking through this locking structure after the poor regulation of step, and then guarantee the stability of cooking device inner structure.

Further, the locking structure comprises a locking screw rod, a locking nut and a locking gasket which extend vertically, a mounting hole is formed in the mounting plate, the upper end of the locking screw rod is directly fixed to the outer surface of the upper liner or fixed to a component fixed to the outer surface of the upper liner, the lower end of the locking screw rod penetrates through the mounting hole and can be locked through the locking nut and the locking gasket, and the lower end of the locking screw rod can move axially in the mounting hole along with the action of the front moving member, the rear moving member or the left moving member and the right moving member in a limiting mode under the unlocking state.

The technical scheme adopted for solving the fourth technical problem is as follows: a cooking device with the step difference adjusting mechanism of the double-door cooking device is disclosed.

Compared with the prior art, the invention has the advantages that: according to the invention, the front and back relative movement of the upper and lower inner containers can be realized through the front and back moving members, so that the front and back step difference of the upper and lower door bodies on the upper and lower inner containers can be adjusted, and meanwhile, the left and right relative movement of the upper and lower inner containers can be realized through the left and right moving members, so that the left and right step difference of the upper and lower door bodies on the upper and lower inner containers can be adjusted. And when the first control part is connected with the first control position of the second control part, the transmission structure drives the front and rear moving parts, and when the first control part is connected with the second control position of the second control part, the transmission structure drives the left and right moving parts, so that the free conversion of the adjustment of the front and rear step difference and the left and right step difference of the upper and lower door bodies can be realized. In addition, the positions of the hinges of the door bodies are not loosened in the step difference adjusting process, so that the door bodies can synchronously move along with the corresponding inner containers, and the influence of the step difference adjusting on the air tightness of the upper door body and the lower door body can be effectively avoided.

Drawings

FIG. 1 is a schematic structural diagram of a cooking apparatus according to an embodiment of the present invention (in a front-rear step difference adjustment state);

FIG. 2 is a schematic view of the structure of FIG. 1 in another direction;

FIG. 3 is a partial exploded view of the cooking apparatus according to the embodiment of the present invention (in a front-rear step adjustment state);

FIG. 4 is a schematic view of the structure of FIG. 3 in another direction;

FIG. 5 is a schematic structural diagram of the cooking apparatus in another state (left-right step difference adjusting state) according to the embodiment of the present invention;

FIG. 6 is a partial exploded view of the cooking apparatus in another state (left-right step difference adjustment state) according to the embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a second control member according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a transmission shaft according to an embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1-8, a cooking device comprises a double-door cooking device step difference adjusting mechanism, wherein the double-door cooking device step difference adjusting mechanism comprises an upper inner container 1 and a lower inner container 2, the front side openings of the upper inner container 1 and the lower inner container 2 are respectively connected with an upper door body 11 and a lower door body 21 in a rotating mode through hinges 3, and the upper and lower inner containers 1 and 2 are sealed in the cooking process through the upper door body 11 and the lower door body 21.

In this embodiment, the lower inner container 2 is fixedly disposed, the mounting plate 4 is horizontally disposed above the lower inner container 2, and the upper inner container 1 is movably disposed relative to the lower inner container 2. Of course, the upper liner 1 may also be fixed to a box (not shown) of the cooking device so that the lower liner 2 is movably disposed relative to the upper liner 1, and from the viewpoint of convenience and safety of adjustment, the volume of the upper liner 1 is smaller than that of the lower liner 2 in this embodiment, so the mode that the lower liner 2 is fixed and the upper liner 1 is movable is preferable.

Further, the inner container comprises a front and rear moving element 5 which can enable the upper inner container 1 to move back and forth relative to the lower inner container 2, a left and right moving element 6 which can enable the upper inner container 1 to move left and right relative to the lower inner container 2, and a transmission structure 7 which can be respectively transmitted to the front and rear moving element 5 or the left and right moving element 6, wherein the transmission structure 7 comprises a first control element 711 and a second control element 77, the second control element 77 at least comprises a first control position 7711 and a second control position 7712, when the first control element 711 is connected with the second control position 7712 of the second control element 77, the transmission structure 7 drives the front and rear moving element 5, and when the first control element 711 is connected with the second control position 7712 of the second control element 77, the transmission structure 7 drives the left and right moving element 6. In this way, the front and back relative movement of the upper and lower inner containers 1 and 2 can be realized through the front and back moving piece 5, so as to adjust the front and back step difference of the upper and

lower door bodies

11 and 21 on the upper and lower inner containers 2, and the left and right relative movement of the upper and lower inner containers 1 and 2 can be realized through the left and right moving piece 6, so as to adjust the left and right step difference of the upper and

lower door bodies

11 and 21 on the upper and lower inner containers 1 and 2. And, when the first control member 711 is connected to the first control site 7711 of the second control member 77, the transmission structure 7 drives the front and rear moving members 5, and when the first control member 711 is connected to the second control site 7712 of the second control member 77, the transmission structure 7 drives the left and right moving members 6, thereby enabling free switching between front and rear step adjustment and left and right step adjustment of the upper and

lower door bodies

11, 21. In addition, the positions of the hinges 3 of the door bodies are not loosened in the step difference adjusting process, so that the influence of the step difference adjusting on the air tightness of the upper inner container 1 and the lower inner container 2 can be effectively avoided.

The transmission structure 7 is disposed between the bottom surface of the upper inner container 1 and the upper surface of the mounting plate 4, and includes a transmission shaft 71 disposed in the left-right direction and rotatable about its own central axis, the front-rear moving member 5 is a first rack disposed in the front-rear direction, the first rack is fixed to the bottom surface of the upper inner container 1, and a first transmission gear 72 engageable with a tooth surface of the first rack is fixed to the transmission shaft 71. Thus, by rotating the transmission shaft 71, the first transmission gear 72 rotates to drive the first rack, so that the upper inner container 1 moves back and forth relative to the lower inner container 2, and the front-back step difference of the upper and

lower door bodies

11, 21 is adjusted. The left and right moving member 6 is a second rack bar installed in the left and right direction, the second rack bar is fixed on the bottom surface of the upper inner container 1, the transmission structure 7 further includes a rotating shaft 76, a first transmission bevel gear 74 and a second transmission bevel gear 75, the rotating shaft 76 is installed with a second transmission gear 73 engaged with the tooth surface of the second rack bar, the first transmission bevel gear 74 is installed on the rotating shaft 76, and the second transmission bevel gear 75 is installed on the transmission shaft 71 and can be engaged with the first transmission bevel gear 74. Thus, by rotating the transmission shaft 71, the second transmission bevel gear 75 rotates to drive the first transmission bevel gear 74 to rotate, so as to drive the rotation shaft 76 to rotate, and further enable the second transmission gear 73 to drive the second rack to move in the left-right direction, so that the upper liner 1 moves left and right relative to the lower liner 2, and the left-right step difference of the upper and

lower door bodies

11 and 21 is adjusted. In this embodiment, the bottom surface of the upper liner 1 and the upper surface of the mounting plate 4 are respectively provided with hinge seats 761, two ends of the rotating shaft 76 are respectively rotatably installed in the corresponding hinge seats 761, the second transmission gear 73 and the second transmission bevel gear 75 are installed on the rotating shaft 76 at an interval from top to bottom, the second transmission gear 73 is located above the second transmission bevel gear 75, the first transmission gear 72 and the first transmission bevel gear 74 are installed on the transmission shaft 71 at an interval from left to right, and the first transmission bevel gear 74 is located outside the first transmission gear 72.

The first control member 711 is a boss protruding from the outer surface of the transmission shaft 71, the second control member 77 is a vertical block fixed on the upper surface of the mounting plate 4, a through hole 771 for the transmission shaft 71 to pass through is formed in the vertical block along the left-right direction, a first groove and a second groove respectively matched with the boss are formed in the inner circumferential surface of the through hole 771 along the circumferential direction, the first groove and the second groove are respectively the first control position 7711 and the second control position 7712, the first control member 711 can be respectively clamped into the first groove and the second groove and can slide along the circumferential direction of the first groove and the second groove, the first groove and the second groove are axially spaced and are communicated with each other through a through groove 7713 extending in the axial direction, the first control member 711 can be clamped into the through groove 7713 and can slide back and forth along the through groove 7713 to be clamped into the first control position 7711 or the second control position 7712, when the first control member 711 is located in the first control position 7711, the first transmission gear 72 is engaged with the first rack, and the first transmission bevel gear 74 is disengaged from the second transmission bevel gear 75, so that the upper liner 1 can move back and forth relative to the lower liner 2, and the front-back step difference of the upper and

lower door bodies

11 and 21 can be adjusted, and when the first control member 711 is located in the second control position 7712, the first transmission bevel gear 74 is engaged with the second transmission bevel gear 75, and the first transmission gear 72 is disengaged from the first rack, so that the upper liner 1 can move left and right relative to the lower liner 2, and the left-right step difference of the upper and

lower door bodies

11 and 21 can be adjusted. In order to facilitate the rotation of the transmission shaft 71, a rotating handwheel 712 is fixed at the right end of the transmission shaft 71 in this embodiment. In addition, preferably, the outer side end of the first control position 7711 is opened and extends to the hole edge of the through hole 771, so that the first control member 711 can be conveniently moved out of the through hole 771 after the step difference is adjusted, and the upper liner 1 can be prevented from moving relative to the lower liner 2 due to misoperation.

Furthermore, in order to enable the upper inner container 1 and the lower inner container 2 to move forward and backward or move left and right relatively more stably, the inner container also comprises a guide structure 8 for guiding the upper inner container 1 to move forward and backward or left and right relatively relative to the lower inner container 2. Specifically, the guide structure 8 includes a guide sliding block 81 fixed on the bottom surface of the upper liner 1 and a guide rail 82 fixed on the upper surface of the mounting plate 4, a guide sliding groove 821 for the guide sliding block 81 to slide back and forth is opened on the guide rail 82, a left guide bar 811 and a right guide bar 812 horizontally extend along the length direction of the guide sliding block 81 on both sides of the lower end of the guide sliding block, a left guide groove 8211 and a right guide groove 8212 are formed by outwardly recessing the left and right groove walls of the guide sliding groove 821 along the length direction of the guide sliding block, and the left guide bar 811 and the right guide bar 812 are respectively clamped into the corresponding guide grooves and can slide left and right along the corresponding guide grooves. Thus, the upper and lower inner containers 1 and 2 are guided to slide back and forth along the guide sliding grooves 821 by the guide sliding block 81, and the upper and lower inner containers 1 and 2 are guided to slide left and right by the guide strips sliding left and right along the corresponding guide grooves. Preferably, in the embodiment, the two guide structures 8 are arranged on the left and right, each guide sliding block 81 has a plate shape and extends in the front-rear direction, the first rack, the second rack and the rotating shaft 76 are respectively installed between the two guide sliding blocks 81, and the transmission shaft 71 is transversely inserted through the right guide sliding block 81, so that the step difference adjusting mechanism of the double-door cooking device of the present invention has a more stable structure.

After the step difference is adjusted, the upper inner container 1 is locked, and the locking structure 9 for locking the upper inner container 1 and the lower inner container 2 is included, so that the upper inner container 1 and the lower inner container 2 can be stably connected through the locking structure 9 after the step difference is adjusted, and the stability of the internal structure of the cooking device is further ensured. Specifically, locking structure 9 includes vertical extension's locking screw 91, lock nut 92 and locking washer 93, has seted up mounting hole 41 on the above-mentioned mounting panel 4, the upper end of above-mentioned locking screw 91 and the surface direct mount of last inner bag 1 or with the part fixed at last inner bag 1 surface fixed, the lower extreme wears to establish in above-mentioned mounting hole 41 and can pass through above-mentioned lock nut 92 and locking washer 93 and lock, and under the locking screw 91 lower extreme unlocked state, it can move in above-mentioned mounting hole 41 along with the action of above-mentioned front and back moving member 5 or left and right moving member 6 respectively. In this embodiment, the locking structure 9 is located outside the right guide structure 8, and the upper end of the locking screw 91 is fixed to the right side surface of the guide sliding block 81 of the right guide structure 8 through a connecting rod 94.

The working process of the invention is as follows:

the front and rear step difference of the upper and

lower door bodies

11 and 21 is adjusted: when the upper and

lower door bodies

11, 21 have front and rear step differences (even if the whole cooking device machine body and installation are finished), the first control part 711 on the transmission shaft 71 is clamped into the first groove (the first control position 7711), so the first transmission gear 72 is meshed with the first rack (the front and rear moving part 5), the transmission shaft 71 is rotated, so the first transmission gear 72 drives the first rack, the upper liner 1 moves back and forth relative to the lower liner 2, the adjustment of the front and rear step differences of the upper and

lower door bodies

11, 21 is realized, after the adjustment is finished, the locking nut 92 is screwed, and the upper liner 1 is fixed on the mounting plate 4.

The adjustment of the left and right step differences of the upper and lower door bodies 11 and 21: when the left and right step differences occur between the upper and lower door bodies 11, 21 (even if the whole cooking device machine body is mounted completely), the first control part 711 on the transmission shaft 71 is clamped into the second groove (the second control position 7712), so that the first transmission bevel gear 74 is meshed with the second transmission bevel gear 75, the transmission shaft 71 is rotated, the first transmission bevel gear 74 drives the second transmission bevel gear 75 to rotate, the rotation shaft 76 is rotated to drive the second transmission gear 73 to drive the second rack (the left and right moving parts 6), the upper liner 1 is moved left and right relative to the lower liner 2, the left and right step differences between the upper and

lower door bodies

11, 21 are adjusted, and after the adjustment is completed, the locking nut 92 is screwed down to fix the upper liner 1 on the mounting plate 4.

It can be seen that, in the invention, after the upper and

lower door bodies

11, 21 of the cooking device are installed, the purpose of adjusting the difference between the steps of the upper and

lower door bodies

11, 21 around or around is achieved by allowing the upper inner container 1 to move back and forth or left and right relative to the lower inner container 2, and the hinge 3 of the upper door body 11 is not loosened in the whole adjusting process, so that the upper door body 11 and the upper inner container 1 can be ensured to move simultaneously, therefore, the airtightness of the upper and lower inner containers 1, 2 cannot be affected, and the upper inner container 1 is controlled to move back and forth or left and right relative to the lower inner container 2 through the guide structure 8, so that the accurate control of the moving distance can be realized, meanwhile, the control of the adjustment of a large difference between the steps can be realized, and the online adjustment of the difference between the steps around.

Claims

1. A step difference adjusting mechanism of a double-door cooking device comprises an upper inner container (1), a lower inner container (2), a mounting plate (4) which is horizontally arranged between the upper inner container (1) and the lower inner container (2) and is fixed with the lower inner container (2), and is characterized by further comprising a front moving member (5) and a rear moving member (5) which can enable the upper inner container (1) and the lower inner container (2) to move front and back relatively, a left moving member (6) and a right moving member (6) which can enable the upper inner container (1) and the lower inner container (2) to move left and right relatively, and a transmission structure (7) which can respectively transmit the front moving member (5) and the rear moving member (6) or the left moving member and the right moving member (6), wherein the transmission structure (7) comprises a first control member (711) and a second control member (77177), the second control member (77) at least comprises a first control position (7711) and a second control position (7712), and when the first control member (711) is matched, the transmission structure (7) can drive the front and rear moving members (5), and when the first control part (711) is matched with the second control position (7712) of the second control part (77), the transmission structure (7) can drive the left and right moving members (6).

2. The double door cooking device step difference adjusting mechanism according to claim 1, wherein the transmission structure (7) is provided between the bottom surface of the upper inner container (1) and the upper surface of the mounting plate (4), and includes a transmission shaft (71) provided in the left-right direction and rotatable about its own central axis, the front and rear moving member (5) is a first rack gear provided in the front-rear direction and fixed to one of the bottom surface of the upper inner container (1) and the upper surface of the mounting plate (4), and a first transmission gear (72) engageable with a tooth surface of the first rack gear is fixed to the transmission shaft (71).

3. The dual door cooking device step adjustment mechanism according to claim 2, wherein the left and right moving member (6) is a second rack gear provided in the left and right direction and fixed at one of the bottom surface of the upper inner container (1) and the upper surface of the mounting plate (4), the transmission structure (7) further comprises a rotating shaft (76), a first transmission bevel gear (74) and a second transmission bevel gear (75), the rotating shaft (76) is provided with a second transmission gear (73) engaged with the tooth surface of the second rack gear,

a first transmission bevel gear (74) is mounted on the rotating shaft (76), and a second transmission bevel gear (75) is mounted on the transmission shaft (71) and can be engaged with the first transmission bevel gear (74).

4. A step difference adjusting mechanism for a double door cooking device as claimed in claim 3, wherein the first control member (711) is a protrusion protruding from the outer surface of the transmission shaft (71), the second control member (77) is a vertical block vertically fixed on the upper surface of the mounting plate (4), the vertical block is provided with a through hole (771) for the transmission shaft (71) to pass through along the left-right direction, the inner peripheral surface of the through hole (771) is respectively provided with a first groove and a second groove circumferentially matching with the protrusion, the first groove and the second groove are respectively the first control position (7711) and the second control position (7712), the first control member (711) can be respectively inserted into the first groove and the second groove and can circumferentially slide along the first groove and the second groove, and the first groove and the second groove are axially spaced and communicate with each other through the axially extending through groove (7713), the first control part (711) can be clamped into the through groove (7713) and slide back and forth along the through groove (7713) to be clamped into the first control position (7711) or the second control position (7712),

and, when the first control part (711) is located in the first control position (7711), the first transmission gear (72) is engaged with the first rack gear and the first transmission bevel gear (74) is disengaged from the second transmission bevel gear (75), and when the first control part (711) is located in the second control position (7712), the first transmission bevel gear (74) is engaged with the second transmission bevel gear (75) and the first transmission gear (72) is disengaged from the first rack gear.

5. The double door cooking device step difference adjusting mechanism as claimed in claim 4, wherein the outer side end of the first control site (7711) is opened and extended to the rim of the through hole (771).

6. The double door cooking device step difference adjusting mechanism according to any one of claims 1 to 4, further comprising a guide structure (8) for guiding the upper inner container (1) and the lower inner container (2) to move forward and backward or left and right relatively.

7. A dual door cooking device step difference adjustment mechanism as claimed in claim 6, the guide structure (8) comprises a guide sliding block (81) fixed on the bottom surface of the upper liner (1) and a guide rail (82) fixed on the upper surface of the mounting plate (4), the guide rail (82) is provided with a guide sliding chute (821) for the guide sliding block (81) to slide back and forth, and both sides of the lower end of the guide sliding block (81) are respectively provided with a left guide bar (811) and a right guide bar (812) which horizontally extend along the length direction, the left and right groove walls of the guide chute (821) are respectively recessed outwards along the length direction to respectively form a left guide groove (8211) and a right guide groove (8212), the left guide bar (811) and the right guide bar (812) are respectively clamped into the corresponding guide grooves and can slide left and right along the corresponding guide grooves.

8. The double door cooking device step difference adjusting mechanism according to any one of claims 1 to 4, further comprising a locking structure (9) for locking the upper inner container (1) and the lower inner container (2).

9. The dual door cooking device step difference adjusting mechanism according to claim 8, wherein the locking structure (9) comprises a locking screw (91), a locking nut (92) and a locking washer (93) extending vertically, the mounting plate (4) is provided with a mounting hole (41), the upper end of the locking screw (91) is directly fixed to the outer surface of the upper inner container (1) or fixed to a component fixed to the outer surface of the upper inner container (1), the lower end of the locking screw penetrates through the mounting hole (41) and can be locked by the locking nut (92) and the locking washer (93), and the locking screw (91) can axially move in the mounting hole (41) along with the actions of the front and rear moving members (5) or the left and right moving members (6) in an unlocked state.

10. A cooking apparatus having the step difference adjusting mechanism of a double door cooking apparatus according to any one of claims 1 to 9.