CN213216463U - Automatic water tank pushing and withdrawing structure and cooking device with same - Google Patents

Abstract

The utility model relates to a structure is withdrawed in water tank release, including water tank seat and water tank, the one end opening of this water tank seat, above-mentioned water tank sliding fit installs in the water tank seat and can stretch out from the opening of water tank seat, still including setting up the rotating member on the water tank seat and being used for driving this rotating member pivoted driving motor, be provided with the guide on this rotating member and be provided with the locating part on the above-mentioned water tank, the one end of this locating part is spacing end and the other end is for breaking away from the end, the water tank makes a round trip to slide the in-process along the water tank seat, the guide can follow above-mentioned locating part synchronous slip thereupon. The utility model discloses can realize that the automation of water tank is released and is withdrawed automatically to, can convenience of customers take out the water tank completely under the water tank open mode, and can avoid the water tank landing from the water tank seat under the water tank closed mode, and through the interact of guide and locating part, need not the water tank position switch and can guarantee withdrawing of water tank and target in place, effectively avoid can the water tank withdraw not target in place and leak and take out not the scheduling problem of water.

Description

Automatic water tank pushing and withdrawing structure and cooking device with same

Technical Field

The utility model relates to a culinary art device field especially relates to an automatic release of water tank is withdrawed structure and is had culinary art device of this structure.

Background

A water tank is generally provided in a cooking device with a steaming function, such as an electric steamer, a steaming and baking integrated machine, and the like. The partial region of putting at control panel has become one of the main trends among the steaming cooking device on the market at present, and for the whole aesthetic property of product, the inside at control panel is installed to the general embedding of water tank for need press the water tank backward when taking the water tank, the water tank pops out forward, and the user can take the water tank or add water in to the water tank this moment. The existing water tank structure usually adopts an electric push-out structure, and the water tank is retracted and needs to be manually replaced by a user, and meanwhile, a position switch is adopted to ensure that the user is placed in a specified position. Such as: chinese utility model patent with patent number ZL201220591711.7 (the publication number of grant is CN202979507U) discloses a structure is released to domestic appliance's water tank, including sliding connection in domestic appliance shell's water tank, still include: the driving component is used for driving the water tank to slide relative to the household appliance shell, and the driving component is arranged in the household appliance shell; the control piece is used for controlling the driving part, electrically connected to the driving part and arranged on the household appliance shell.

However, the conventional water tank structure has the following problems: (1) if the cooking device is installed obliquely, the water tank risks slipping off the water tank seat, which may cause the water tank to break or injure the user. (2) Due to the requirement of the volume of the water tank, the water tank is usually longer, the dimensional tolerance in the length direction is larger, the position switch of the water tank is difficult to ensure that the water tank is put in place, and the problems of water leakage, water pumping failure and the like are easily caused when the water tank is not put in place.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the first technical problem that a water tank automatic release that facilitates use withdraws structure is provided to prior art.

The utility model aims to solve the second technical problem that provide an avoid the automatic structure of withdrawing of releasing of water tank landing to prior art.

The utility model aims to solve the third technical problem that to prior art and provide a can effectively guarantee that the water tank pushes the automatic release of water tank that targets in place and withdraws the structure.

The utility model aims to solve the fourth technical problem that provide a cooking device who has above-mentioned water tank automatic release and withdraw structure to prior art.

The utility model provides a technical scheme that at least one above-mentioned technical problem adopted does: a water tank pushing and withdrawing structure comprises a water tank seat and a water tank, wherein one end of the water tank seat is provided with an opening, the water tank is arranged in the water tank seat in a sliding fit manner and can extend out of the opening of the water tank seat,

the water tank also comprises a rotating part arranged on the water tank seat and a driving motor used for driving the rotating part to rotate, wherein the rotating part is provided with a guide part, the water tank is provided with a limiting part, one end of the limiting part is a limiting end, the other end of the limiting part is a separating end, and the guide part can synchronously slide along the limiting part when the water tank slides back and forth along the water tank seat,

and in the process of pushing the water tank out, the rotating piece rotates positively and can be abutted against the water tank to push the water tank towards the opening direction of the water tank seat, when the water tank is opened in place, the guide piece slides out of the limiting piece through the separation end of the limiting piece,

in the process of recovering the water tank, the rotating piece rotates reversely to enable the guide piece to slide into the limiting piece through the separating end and slide to the limiting end to pull the water tank, and when the water tank is closed in place, the guide piece is limited on the limiting end of the limiting piece through the rotating piece.

Furthermore, the front end of the water tank seat is open, the water tank can slide back and forth along the water tank seat, the rotating piece and the driving motor are arranged on the rear side of the water tank, and the limiting piece is arranged at the tail end of the water tank. Thereby, the water tank can be better pushed out and retracted through the rotation of the rotating member.

Further, the rotating member is a cam which is horizontally arranged, the guide member is a guide shaft which is fixed on the cam and vertically extends, the limiting member is a limiting groove which is horizontally arranged, one end of the limiting groove is opened to form a separating end of the limiting groove, the other end of the limiting groove is closed to form a limiting end of the limiting groove, and the guide shaft can slide between the limiting end and the separating end of the guide shaft along the limiting groove. Can guarantee to form more reliable interact between guide and the locating part like this, wherein, can make the rotating member stimulate the water tank better through the counterbalance action of guiding axle and spacing groove cell wall, thereby realize that the firm of water tank is withdrawed, can make the guiding axle break away from the end better from should breaking away from through opening spacing groove one end, thereby enable the user and draw the water tank under the water tank open mode more smoothly, form spacing end and can be better with the spacing locking of water tank under the water tank closed mode through sealing the one end of spacing groove, thereby avoid the water tank landing better.

Furthermore, the shape of the cam is fan-shaped, the arc surface of the cam can be abutted against the tail end of the water tank, a rotating shaft is vertically arranged at the center of the circle of the cam, the guide shaft is arranged at one end of the arc surface of the cam, the upper end of the guide shaft is exposed out of the cam, the shape of the water tank is square and extends along the sliding direction of the water tank, the bottom surface of the tail end of the water tank is sunken upwards, the limiting groove is arranged on the bottom surface of the sunken part along the width direction of the water tank, and the upper end of the guide shaft can be positioned in. The fan-shaped cam design can enable the cam to act on the water tank better during forward rotation, and enable the rotating torque force of the cam to be converted into driving force for pushing the water tank to move forward better, so that the water tank can slide out along the water tank seat more stably, the position of the limiting groove is arranged to enable the cam to rotate, and the guide shaft on the cam interacts with the limiting groove better.

Furthermore, the limiting groove is formed by enclosing a convex block convexly arranged on the bottom surface of the concave part at the tail end of the water tank and the rear side surface of the water tank, the groove wall of the limiting groove is smooth, and the rear side groove surface of the separation end of the limiting groove inclines backwards from inside to outside to form a guide inclined surface, so that the guide shaft can be better guided to slide out from the separation end of the limiting groove.

Furthermore, the central angle of the cam is 90 degrees, so that the water tank can be better pushed when the cam rotates forwards, and when the cam rotates backwards, the arc surface of the cam does not abut against the water tank, and the water tank is pulled to be withdrawn through the interaction of the guide shaft and the limiting groove, so that the reliability of the action of pushing out and withdrawing the water tank is further ensured.

The cam is hollow, a tooth surface extending along the direction of the circular arc edge of the cam is vertically arranged in the cam, and the fifth transmission gear is meshed with the tooth surface. Therefore, the power of the driving motor can be transmitted to the cam after being decelerated and torque-increased through the speed reducing mechanism and the transmission mechanism, so that the stable rotation of the cam is ensured, and the stability of the pushing-out and withdrawing actions of the water tank is further ensured.

Furthermore, the driven gear and the first transmission gear are dual gears, the second transmission gear and the third transmission gear are dual gears, and the fourth transmission gear and the fifth transmission gear are dual gears, so that the structure of the speed reducing mechanism and the structure of the transmission mechanism are more compact.

Further, still include the mounting bracket that the level set up, this mounting bracket includes the last mounting panel and the lower mounting panel that the interval set up from top to bottom, should go up, connect through vertical extension's support column between the lower mounting panel, above-mentioned driving motor installs on the bottom surface of mounting panel down, its power output shaft is vertical to be worn to establish under on the mounting panel, the driving gear, driven gear, first drive gear, second drive gear, third drive gear and fourth drive gear all install between the upper and lower mounting panel, above-mentioned fifth drive gear is located the upper surface of upper mounting panel, and above-mentioned cam is installed on the upper surface of upper mounting panel through its axis of rotation. Thereby make the utility model provides an automatic inner structure that releases the structure of withdrawing of water tank is compacter to can realize the firm installation of driving motor, reduction gears, drive mechanism and cam.

The technical solution adopted to further solve the fourth technical problem is as follows: a cooking device with the water tank pushing-out and withdrawing structure is disclosed.

Compared with the prior art, the utility model has the advantages of: the driving motor drives the rotating part to rotate, wherein the rotating part rotates positively and can be abutted against the water tank to push the water tank towards the opening direction of the water tank seat, so that the water tank is pushed out automatically, and meanwhile, the rotating part rotates reversely to enable the guide part to slide into the limiting part through the separation end and slide to the limiting end to pull the water tank, so that the water tank is retracted automatically. The utility model discloses can realize that the automation of water tank is released and is withdrawed automatically, high durability and convenient use, the water tank motion process is smooth and orderly, science and technology feels strong, can promote user's use greatly and experience, and, when the water tank is opened and targets in place, above-mentioned guide passes through the end roll-off locating part that breaks away from of locating part, thereby convenience of customers draws out the water tank completely, and when the water tank closed and target in place, above-mentioned guide is spacing served at spacing by above-mentioned locating part, thereby can avoid the water tank landing from the water tank seat, and through the interact of guide and locating part, it can guarantee retrieving of water tank to target in place to need not water tank position switch, effectively avoid retrieving leaking and not taking out the scheduling problem that does not go.

Drawings

Fig. 1 is an automatic water tank pushing and withdrawing structure in the embodiment of the present invention;

fig. 2 is a structure for automatically pushing out and retracting the water tank in the water tank pushing-out state (the water tank is opened) according to the embodiment of the present invention;

fig. 3 is a structure for automatically pushing out and withdrawing the water tank in the state that the water tank is closed according to the embodiment of the present invention;

fig. 4 is a schematic view of a partial structure of an automatic water tank ejecting and retracting structure in an embodiment of the present invention;

fig. 5 is another schematic partial structure diagram of an automatic water tank ejecting and retracting structure according to an embodiment of the present invention;

fig. 6 is a schematic view of still another partial structure of the automatic water tank ejecting and retracting structure according to the embodiment of the present invention;

fig. 7 is a schematic view of still another partial structure of the automatic water tank ejecting and retracting structure according to the embodiment of the present invention;

fig. 8 is a schematic structural diagram of a water tank in an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 8, a cooking device (for example, a steam box, a steaming and baking integrated machine, etc. having a steaming function) comprises a water tank automatic pushing and withdrawing structure, wherein the water tank automatic pushing and withdrawing structure comprises a water tank assembly and a control panel, and the water tank assembly is arranged at the rear side of the control panel 9. The water tank 1 assembly includes a water tank base 2 and a water tank 1, and the control panel 9 is provided with a water tank port 91 through which the water tank 1 slides out. The water tank base 2 is opened at one end, and the water tank 1 is slidably mounted in the water tank base 2 and can be extended from the opening of the water tank base 2. In this embodiment, the shapes of the water tank base 2 and the water tank 1 are both in a long-strip direction, and the front end of the water tank base 2 is open, so that the water tank 1 can slide back and forth along the water tank base 2.

Further, the structure for pushing out and retrieving the water tank 1 in this embodiment further includes a rotating member disposed on the water tank base 2 and a driving motor 4 for driving the rotating member to rotate, the rotating member is provided with a guiding member, the water tank 1 is provided with a limiting member, one end of the limiting member is a limiting end 111, and the other end of the limiting member is a releasing end 112, and during the process that the water tank 1 slides back and forth along the water tank base 2, the guiding member can slide synchronously along the limiting member. In addition, during the pushing-out process of the water tank 1, the rotating member rotates forward and can abut against the water tank 1 to push the water tank 1 towards the opening direction of the water tank base 2, and when the water tank 1 is opened in place, the guide member slides out of the limiting member through the separation end 112 of the limiting member. In the process of recovering the water tank 1, the rotating member rotates reversely to make the guide member slide into the limiting member through the disengaging end 112 and slide to the limiting end 111 to pull the water tank 1, and when the water tank 1 is closed in place, the guide member is limited on the limiting end 111 of the limiting member.

Thus the utility model discloses in, driving motor 4 drive rotating member rotates, wherein, the rotating member is just changeing and can offset and promote water tank 1 towards water tank seat 2 opening direction with above-mentioned water tank 1 to realize that the automation of water tank 1 is released, simultaneously, the rotating member is reversed and make the guide through break away from end 112 and slide into the locating part and slide to above-mentioned spacing end 111 and stimulate water tank 1, thereby realize that the automation of water tank 1 is withdrawed. The utility model discloses can realize that water tank 1's automation is released and is withdrawed automatically, 1 motion process of water tank is smooth and orderly, science and technology feels strong, can promote user's use greatly and experience, and, when water tank 1 is opened and targets in place, above-mentioned guide passes through the end 112 roll-off locating part that breaks away from of locating part, thereby convenience of customers draws out water tank 1 completely, and when water tank 1 closes and targets in place, above-mentioned guide is spacing on the spacing end 111 of above-mentioned locating part, thereby can avoid water tank 1 landing from water tank seat 2, and through the interact of guide and locating part, need not the recovery that water tank 1 position switch can guarantee water tank 1 and target in place, effectively avoid can water tank 1 withdraw not target in place and the water leakage that leads to and take out not the scheduling problem.

In this embodiment, the rotating member and the driving motor 4 are disposed at the rear side of the water tank 1, and the limiting member is disposed at the rear end of the water tank 1, so that the water tank 1 can be pushed out and retracted by the rotation of the rotating member. Further, the rotating member is a cam 3 disposed horizontally, the guiding member is a guiding shaft 5 fixed on the cam 3 and extending vertically, the limiting member is a limiting groove 11 disposed horizontally, one end of the limiting groove 11 is open to form a separating end 112, the other end is closed to form a limiting end 111, and the guiding shaft 5 can slide along the limiting groove 11 between the limiting end 111 and the separating end 112. Can guarantee to form more reliable interact between guide and the locating part like this, wherein, the counterbalance through guiding axle 5 and spacing groove 11 cell wall enables the rotating member to pull water tank 1 better, thereby realize that water tank 1's stability is withdrawed, through making spacing groove 11 one end opening enable guiding axle 5 break away from end 112 from this better, thereby enable the user to extract water tank 1 under water tank 1 open mode more smoothly, form spacing end 111 and can better with the spacing locking of water tank 1 under water tank 1 closed mode through sealing the one end with spacing groove 11, thereby avoid water tank 1 landing better.

Specifically, in this embodiment, the cam 3 has a fan shape, an arc surface of the cam 3 can abut against the tail end of the water tank 1, a rotation shaft 31 is vertically disposed at the center of the circle, the guide shaft 5 is disposed at one end of the arc surface of the cam 3, the upper end of the guide shaft is exposed out of the cam 3, the water tank 1 has a square shape and extends along the sliding direction of the water tank, the bottom surface of the tail end of the guide shaft is recessed upward, the limiting groove 11 is disposed on the bottom surface of the recessed portion along the width direction of the bottom surface, and the upper end of the guide shaft 5 can be located in the limiting groove 11. Fan-shaped cam 3 design can make cam 3 corotation act on water tank 1 better to the rotatory torsion that enables cam 3 changes the drive power that promotes water tank 1 and move forward better, thereby enables water tank 1 and more steadily along 2 roll-offs of water tank seat, and the position setting of spacing groove 11 enables cam 3 and rotates the in-process, and guiding axle 5 on the cam 3 interact with spacing groove 11 better. In this embodiment, the limiting groove 11 is formed by surrounding the protrusion 12 protruding from the bottom surface of the recess at the tail end of the water tank 1 and the rear side surface of the water tank 1, the groove wall of the limiting groove 11 is smooth, and the rear side groove surface of the separation end 112 of the limiting groove 11 is inclined backwards from inside to outside to form a guide inclined surface 1121, so that the guide shaft 5 can be better guided to slide out from the separation end 112 of the limiting groove 11. Preferably, in this embodiment, the central angle of the cam 3 is 90 degrees, so that the water tank 1 can be better ensured to be pushed when the cam 3 rotates forward, and when the cam 3 rotates backward, the arc surface of the cam 3 does not abut against the water tank 1, and the water tank 1 is pulled to be retracted by the interaction between the guide shaft 5 and the limiting groove 11, so as to ensure the reliability of the pushing and retracting actions of the water tank 1.

Further, the automatic pushing and retracting structure of the water tank 1 in this embodiment further includes a speed reducing mechanism 6 and a transmission mechanism 7, wherein the speed reducing mechanism 6 includes a driving gear 61 disposed on the output shaft of the driving motor 4 and a driven gear 62 engaged with the driving gear 61, the transmission mechanism 7 includes a first transmission gear 71, a second transmission gear 72, a third transmission gear 73, a fourth transmission gear 74 and a fifth transmission gear 75 engaged with each other in sequence, the cam 3 is hollow, a tooth surface 32 extending along the arc edge direction of the cam is vertically disposed in the cam, and the fifth transmission gear 75 is engaged with the tooth surface 32. Therefore, the power of the driving motor 4 can be reduced and torque-increased through the speed reducing mechanism 6 and the transmission mechanism 7 and then transmitted to the cam 3, so that the stable rotation of the cam 3 is ensured, and the stability of the pushing-out and withdrawing actions of the water tank 1 is further ensured.

Still further, the driven gear 62 and the first transmission gear 71 are dual gears, the second transmission gear 72 and the third transmission gear 73 are dual gears, and the fourth transmission gear 74 and the fifth transmission gear 75 are dual gears, so that the reduction mechanism 6 and the transmission mechanism 7 are more compact in structure. Specifically, the driven gear 62 and the first transmission gear 71 are coaxially rotated by a first gear shaft 76, the second transmission gear 72 and the third transmission gear 73 are coaxially rotated by a second gear shaft 77, and the fourth transmission gear 74 and the fifth transmission gear 75 are coaxially rotated by a third gear shaft 78.

In order to better realize the installation of the driving motor 4, the speed reducing mechanism 6, the transmission mechanism 7 and the cam 3, the automatic pushing and withdrawing structure of the water tank 1 in the embodiment further comprises a horizontally arranged mounting rack 8, the mounting rack 8 comprises an upper mounting plate 81 and a lower mounting plate 82 which are arranged at an interval from top to bottom, the upper mounting plate 81 and the lower mounting plate 82 are connected through a support pillar 83 which extends vertically, the driving motor 4 is arranged on the bottom surface of the lower mounting plate 82, the power output shaft of the power transmission device is vertically arranged on the lower mounting plate 82 in a penetrating way, the driving gear 61, the driven gear 62, the first transmission gear 71, the second transmission gear 72, the third transmission gear 73 and the fourth transmission gear 74 are all arranged between the upper mounting plate 81 and the lower mounting plate 82, the fifth transmission gear 75 is located on the upper surface of the upper mounting plate 81, and the cam 3 is mounted on the upper surface of the upper mounting plate 81 through the rotation shaft 31 thereof. Enable like this the utility model provides an inner structure that the structure was withdrawed in automatic release of water tank is compacter to can realize driving motor 4, reduction gears 6, drive mechanism 7 and cam 3's firm installation. Specifically, in this embodiment, the upper and lower mounting plates 81 and 82 are square in shape, four corners of the upper and lower mounting plates 81 and 82 are connected by the supporting posts 83, the first gear shaft 76 and the second gear shaft 77 are connected between the upper and lower mounting plates 81 and 82, the lower end of the third gear shaft 78 is connected to the lower mounting plate 82, and the upper end of the third gear shaft is exposed through the upper mounting plate 81.

The working process of the utility model is as follows:

under the water tank 1 closed condition, guiding axle 5 is spacing at spacing end 111 of spacing groove 11 to guarantee the stability of water tank 1 under the closed condition, avoid water tank 1 from the roll-off in water tank seat 2. In addition, driving motor 4 corotation and drive cam 3 corotation, the anchor ring of cam 3 offsets with 1 trailing flank of water tank of 1 tail end depressed place of water tank, thereby promote water tank 1, make water tank 1 can slide towards the opening direction of water tank seat 2, guide shaft 5 moves to breaking away from end 112 from its spacing end 111 along spacing groove 11 simultaneously, after water tank 1 released the target position (namely water tank 1 is in the open mode), guide shaft 5 is deviate from the end 112 that breaks away from of spacing groove 11 this moment, be used for can extracting water tank 1 completely.

Under 1 open mode of water tank, driving motor 4 reversal and drive the cam 3 reversal, leading axle 5 breaks away from the end through spacing groove 11 and slides into in the spacing groove 11 again and contact with the back groove face of spacing groove 11 this moment, because the rotation of cam 3, make leading axle 5 offset with the back groove face of spacing groove 11, thereby stimulate water tank 1 backward, along with cam 3's continuous rotation, water tank 1 is slowly pulled back, when water tank 1 withdraws to target in place (under 1 closed condition of water tank), leading axle 5 slides to the spacing end 111 of spacing groove 11, water tank 1 is spacing locking again.

Claims (10)

1. A water tank pushing and withdrawing structure comprises a water tank seat (2) and a water tank (1), wherein one end of the water tank seat (2) is opened, the water tank (1) is arranged in the water tank seat (2) in a sliding fit manner and can extend out of the opening of the water tank seat (2),

the water tank also comprises a rotating part arranged on the water tank seat (2) and a driving motor (4) used for driving the rotating part to rotate, wherein the rotating part is provided with a guide part, the water tank (1) is provided with a limiting part, one end of the limiting part is a limiting end (111) and the other end is a separating end (112), and the guide part can synchronously slide along the limiting part when the water tank (1) slides back and forth along the water tank seat (2),

and in the process of pushing the water tank (1), the rotating piece rotates positively to abut against the water tank (1) and push the water tank (1) towards the opening direction of the water tank seat (2), when the water tank (1) is opened, the guide piece slides out of the limiting piece through the separation end (112) of the limiting piece,

in the recovery process of the water tank (1), the rotating piece rotates reversely to enable the guide piece to slide into the limiting piece through the separation end (112) of the limiting piece and slide to the limiting end (111) to pull the water tank (1), and when the water tank (1) is closed, the guide piece is limited on the limiting end (111) of the limiting piece.

2. The water tank push-out and retraction structure as claimed in claim 1, wherein the water tank base (2) is opened at a front end, the water tank (1) can slide back and forth along the water tank base (2), the rotary member and the driving motor (4) are provided at a rear side of the water tank (1), and the stopper is provided at a rear end of the water tank (1).

3. The water tank push-out retraction structure according to claim 2, wherein the rotating member is a horizontally disposed cam (3), the guide member is a vertically extending guide shaft (5) fixed to the cam (3), the position limiting member is a horizontally disposed limiting groove (11), one end of the limiting groove (11) is open to form a release end (112) thereof, and the other end is closed to form a limiting end (111) thereof, and the guide shaft (5) can slide along the limiting groove (11) between the limiting end (111) and the release end (112) thereof.

4. A water tank push-out and retraction structure as claimed in claim 3, wherein the cam (3) is shaped like a sector, the arc surface of the cam can abut against the tail end of the water tank (1), the center of the cam is vertically provided with a rotating shaft (31), the guide shaft (5) is arranged at one end of the arc edge of the cam (3) and the upper end of the guide shaft is exposed out of the cam (3), the water tank (1) is shaped like a square and extends along the sliding direction of the water tank, the bottom surface of the tail end of the cam is recessed upward, the bottom surface of the recessed portion is provided with the limit groove (11) along the width direction of the cam, and the upper end of the guide shaft (5) can be located in the limit groove (11).

5. The water tank pushing-out and retracting structure as claimed in claim 4, wherein the limiting groove (11) is defined by a protrusion (12) protruding from the bottom surface of the recess at the tail end of the water tank (1) and the rear side surface of the water tank (1), the wall of the limiting groove (11) is smooth, and the rear side groove surface of the releasing end (112) of the limiting groove (11) is inclined backward from inside to outside to form a guiding inclined surface (1121).

6. The tank push-out retraction structure according to claim 4, wherein the center angle of the cam (3) is 90 degrees.

7. The water tank push-out retraction structure according to any one of claims 3 to 6, further comprising a speed reduction mechanism (6) and a transmission mechanism (7), wherein the speed reduction mechanism (6) comprises a driving gear (61) disposed on an output shaft of the driving motor (4) and a driven gear (62) engaged with the driving gear (61), the transmission mechanism (7) comprises a first transmission gear (71), a second transmission gear (72), a third transmission gear (73), a fourth transmission gear (74) and a fifth transmission gear (75) engaged with each other in sequence, the cam (3) is hollow, a tooth surface (32) extending along an arc edge direction of the cam is vertically disposed in the cam, and the fifth transmission gear (75) is engaged with the tooth surface (32).

8. The water tank push-out retracting structure as claimed in claim 7, wherein the driven gear (62) and the first transmission gear (71) are duplicate gears, the second transmission gear (72) and the third transmission gear (73) are duplicate gears, and the fourth transmission gear (74) and the fifth transmission gear (75) are duplicate gears.

9. The water tank push-out retracting structure as recited in claim 8, further comprising a horizontally disposed mounting frame (8), the mounting rack (8) comprises an upper mounting plate (81) and a lower mounting plate (82) which are arranged at intervals up and down, the upper mounting plate (81) and the lower mounting plate (82) are connected through a vertically extending support column (83), the driving motor (4) is mounted on the bottom surface of the lower mounting plate (82), the power output shaft of the power transmission device is vertically arranged on a lower mounting plate (82) in a penetrating way, the driving gear (61), the driven gear (62), the first transmission gear (71), the second transmission gear (72), the third transmission gear (73) and the fourth transmission gear (74) are all arranged between an upper mounting plate (81) and a lower mounting plate (82), the fifth transmission gear (75) is positioned on the upper surface of the upper mounting plate (81), and the cam (3) is mounted on the upper surface of the upper mounting plate (81) through the rotating shaft (31) thereof.

10. A cooking apparatus having a water tank push-out and retraction structure as claimed in any one of claims 1 to 9.

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