CN206565771U - Lid switching mechanism and cooking utensils - Google Patents

Abstract

The utility model is related to household appliance technical field, discloses a kind of lid switching mechanism and cooking utensils.Lid switching mechanism includes pot, the motor in pot, the circular lid being articulated in pot, the retainer being articulated on lid, the first gear unit on lid and the second gear unit in pot.Wherein, retainer is vertical with lid relative to the pivot center of lid, motor drives the motion of the first gear unit to drive retainer to be rotated between the locked relative to pot, lid is parallel with lid relative to the pivot center of pot, and motor drives the motion of the second gear unit to drive lid to be rotated relative between the open position of pot and closed position.Wherein, motor drives and does not transmit power to the second gear unit during the first gear unit, and motor drives and do not transmit power to the first gear unit during the second gear unit.Lid switching mechanism of the present utility model greatly increases the usage comfort of cooking utensils.

Description

Lid switching mechanism and cooking utensils

Technical field

The utility model is related to household appliance technical field, in particular it relates to a kind of lid switching mechanism and cooking utensils.

Background technology

Cooking utensils are had been widely used among daily life, the application of such as electric cooker.With electric cooker The development in manufacture field, people there has also been higher and higher requirement to the usage comfort of electric cooker.For example, opening in electric cooker During lid or closing lid, people are more desirable to that during rice cooker cover opening or closing lid automation can be realized, so on the one hand It is possible to prevente effectively from uncap or closing lid during steam directly contact human body so that avoid scald phenomenon generation, the opposing party Face can also reduce the operating procedure of electric cooker, so that the use of user is more succinctly and conveniently.

At present in the existing electric pressure cooking saucepan for being capable of automatic open close cover, the process of uncapping is typically the rotation first on swivelling cover Hand, drives lock rotation, then Manual press lid-opening button, utilizes hinge position while lid is rotated by drive disk assembly Spring upsprings pot cover, finally realizes the process of uncapping of electric pressure cooking saucepan, and closing lid process contrast.The existing electric pressure cooking saucepan And it is unrealized uncap or closing lid full automation, it is necessary to manual rotation lid is with rotating latch, continue to press lid-opening button ability Uncap, and it is complicated using process so that user is easier to forget operating procedure, while reliability is also poor.

In view of the deficiencies of the prior art, those skilled in the art wishes to seek a kind of lid for being capable of automatic open close cover Switching mechanism, with enable apply the structure cooking utensils automatic lid closing/opening or closing lid so that simplify cooking utensils operation Step, lifts the usage comfort of user.

Utility model content

The purpose of this utility model is to provide a kind of lid switching mechanism and cooking utensils, and the lid switching mechanism can make lid Automatically turn on or close, so as to improve the usage comfort of cooking utensils.

To achieve these goals, the utility model provide a kind of lid switching mechanism, including pot, in pot Motor, be articulated in the pot circular lid, be articulated on the lid retainer, first on lid Gear unit and the second gear unit in the pot.Wherein, the retainer relative to lid pivot center with Lid is vertical, and the motor drives the motion of the first gear unit to drive the retainer in the latched position reconciliation relative to pot Rotated between lock position, the lid is parallel with lid relative to the pivot center of pot, the transmission of motor driving second is single Member moves to drive lid to rotate relative between the open position of pot and closed position.Wherein, the motor driving institute Power is not transmitted to second gear unit when stating the first gear unit, and during motor driving second gear unit Power is not transmitted to first gear unit.

Preferably, synchronously connection has the first power output portion and the second power output portion, institute on the power output shaft of motor The first power output portion is stated to coordinate the driving force of motor being transferred to retainer, the second power output with first gear unit Portion coordinates the driving force of motor being transferred to lid with the second gear unit.Wherein, when the first power output portion is passed with first When moving cell links, the second power output portion is separated with the second gear unit, when the first power output portion and the first gear unit During separation, the second power output portion links with the second gear unit.

Preferably, the first power output portion is first gear, and the second power output portion is with the first circumferential tooth section Second gear.

Preferably, the first gear unit includes being rotatably arranged on the lid and pivot center is perpendicular to described 3rd gear of lid, and electronic-controlled power steering part of the drive connection between the first gear and the 3rd gear, the 3rd tooth Wheel is set to coaxial with retainer.Wherein, when the retainer is rotated between locked and unlocked positions relative to pot, institute Electronic-controlled power steering part is stated to engage with the first gear；When the lid relative to pot between open position and closed position turn When dynamic, the electronic-controlled power steering part departs from the first gear.

Preferably, first gear and the 3rd gear are spur gear, and electronic-controlled power steering part is to be slidably disposed on the lid On elongate posts, wherein, the two ends of elongate posts are formed with the straight-tooth engaged respectively with the first gear and the 3rd gear Section.

Preferably, it is provided with lid for carrying out being formed with spacing chute, the elongate posts to the elongate posts The slide rail being engaged with the chute.

Preferably, the second gear unit includes being used for being rotatably arranged in bearing pin in pot, the bearing pin with it is described Lid is fixedly connected.Wherein, can be engaged with the first circumferential tooth section of the second gear second is provided with bearing pin circumferential Tooth section, when the lid is rotated relative to pot between open position and closed position, the described first circumferential tooth section and institute State the second circumferential tooth section engagement；When the retainer relative to pot in latched position and when being rotated between unlocked position, it is described First circumferential tooth section departs from the described second circumferential tooth section.

Preferably, the second circumferential tooth section is formed directly on the outer peripheral face of the bearing pin.

Preferably, the first circumferential flange section is provided with the external margin of retainer, the retainer rotates and enables to first Flange section is used to contact with the second circumferential flange section in pot to be unlocked with locking or departing from.

The utility model also proposed a kind of cooking utensils, including above-mentioned lid switching mechanism.

Preferably, cooking utensils also include being used to prevent what the lid was opened in the course of work of the cooking utensils The electromagnetism push rod coordinated with safety switch is additionally provided with safety switch, lid or pot, after lid is locked relative to pot Electronic-controlled power steering part triggers electromagnetism push rod so that safety switch locking lid and pot, and remote after lid is relative to pot unblock From safety switch to open the lid.

Preferably, cooking utensils also include being connected and being used for the locked motor when the motor breaks down with the motor Detection means.

Preferably, the cooking apparatus is pressure cooker.

By above-mentioned technical proposal, lid operationally, is if desired being locked shape by lid switching mechanism of the present utility model Opened under state, the rotation of motor drives the first gear unit to move first, and now the first gear unit drives cover release, works as lid After body unblock, motor stops the drive to the first gear unit, and starts to drive the motion of the second gear unit, now the second transmission Unit drives Cover opening；If desired lid is locked in the on state, then motor rotates backward and drives second to pass first Moving cell is moved, and now the second gear unit drives lid closure, after lid is closed, and motor stops to the second gear unit Drive, and start to drive the motion of the first gear unit, now the first gear unit drives cover lock.Thus, the first transmission is single Member realizes the unblock or locking of lid, and the second gear unit realizes the closure or openness of lid.Therefore, it is of the present utility model Lid opening and closing structure can realize cover release or locking, the automation of closure or openness, so as to simplify manual operation lid Operating procedure, is conducive to being lifted the usage comfort of user.Lid switching mechanism of the present utility model only needs to a motor, you can The fastening and retainer for completing pot cover screw action, simplify cost, can also be controlled by smart mobile phone or other-end Motor processed, realizes remote operation, it is to avoid when uncapping, steam scalds human hand, improves the security of cooking apparatus.

Other features and advantages of the utility model will be described in detail in subsequent embodiment part.

Brief description of the drawings

Accompanying drawing is to be further understood for providing to of the present utility model, and constitutes a part for specification, and following Embodiment be used to explain the utility model together, but do not constitute to limitation of the present utility model.In the accompanying drawings：

Fig. 1 is the structural representation being according to lid switching mechanism of the present utility model under closed-lock state；

Fig. 2 is the structural representation being according to lid switching mechanism of the present utility model in closure released state；

Fig. 3 is the structural representation being according to lid switching mechanism of the present utility model in open mode；

Fig. 4 is the part-structure schematic diagram according to lid switching mechanism of the present utility model；

Fig. 5 is the structural representation being according to lid switching mechanism of the present utility model in closure state；

Fig. 6 is the structural representation being according to lid switching mechanism of the present utility model in closure released state；

Fig. 7 is the structural representation being according to lid switching mechanism of the present utility model under closed-lock state.

Description of reference numerals

The lid of 1 pot 21

The motor of 22 retainer 31

The gear unit of 41 first gear unit 42 second

The first gear of 32 power output shaft 33

34 the first circumferential tooth sections of second gear A

The electronic-controlled power steering part of 411 the 3rd gear 412

421 bearing pin C straight-tooth sections

The circumferential tooth sections of B second

Embodiment

Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.It should be appreciated that herein Described embodiment is merely to illustrate and explained the utility model, is not limited to the utility model.

Fig. 1-7 shows the structure of the lid switching mechanism provided according to the utility model.With reference to shown in Fig. 1, Fig. 2 and Fig. 4, The lid switching mechanism includes pot 1, the motor 31 in pot 1, the circular lid 21 being articulated in pot 1, pivot joint Retainer 22 (as shown in Figure 4) on lid 21, the first gear unit 41 on lid 21 and in pot 1 Second gear unit 42.Wherein, retainer 22 is vertical with lid 21 relative to the pivot center of lid 21, and the driving of motor 31 first is passed Moving cell 41 is moved to drive retainer 22 to be rotated between the locked relative to pot 1, and lid 21 is relative Parallel with lid 21 in the pivot center of pot 1, motor 31 drives the second gear unit 42 to move to drive lid 21 relative Rotated between the open position of pot 1 and closed position, wherein, not to the when motor 31 drives first gear unit 41 Two gear units 42 transmit power, and motor 31 drives and do not transmit dynamic to the first gear unit 41 during second gear unit 42 Power.

According to the utility model, lid 21 operationally, is if desired being locked shape by lid switching mechanism of the present utility model Opened under state, as shown in Figures 1 to 4, the rotation of motor 31 drives the first gear unit 41 to move first, now the first transmission is single Member 41 drives retainer 22 to rotate to unlock, and after lid 21 is unlocked, motor 31 stops the drive to the first gear unit 41, and opens Begin to drive the second gear unit 42 to move, now the second gear unit drives lid 21 to open；If desired lid 21 is being opened Locked under state, as shown in Figures 5 to 7, then motor 31 rotates backward and drives the second gear unit 42 to move first, now the Two gear units 42 drive lid 21 to close, and after lid 21 is closed, motor 31 stops the drive to the second gear unit 42, and Start to drive the first gear unit 41 to move, now the first gear unit drives retainer 22 to rotate to lock.Thus, the first transmission Unit 41 realizes the unblock or locking of lid 21, and the second gear unit 42 realizes the closure or openness of lid 21.Therefore, originally The lid opening and closing structure of utility model can realize lid 21 unlock or lock, the automation of closure or openness, so as to simplify people To operate the operating procedure of lid 21, be conducive to being lifted the usage comfort of user.Further, since lid opening and closing of the present utility model Mechanism only needs to a motor 31 and can complete the fastening and retainer 22 of lid 21 to screw action, therefore simplifies cost, Controlled motor 31 can also be carried out for example, by smart mobile phone or other-end, remote operation is realized, it is to avoid steam scalds when uncapping Hurt sb.'s feelings hand, improve the safety in utilization of lid switching mechanism.

As shown in figure 4, being preferably carried out at one in mode, synchronously connection has first on the power output shaft 32 of motor 31 Power output portion and the second power output portion, the first power output portion and the first gear unit 41 coordinate with by the driving of motor 31 Power is transferred to retainer 22, and the second power output portion coordinates the driving force of motor 31 being transferred to lid with the second gear unit 42 21.Wherein, when the first power output portion and the first gear unit 41 link, the second power output portion and the second gear unit 42 Separation, when the first power output portion is separated with the first gear unit 41, the second power output portion and the second gear unit 42 It is dynamic.Pass through the setting so that motor 31 only can transmit dynamic in the unblock of lid 21 and locking process to the first gear unit 41 Power, and open in lid 21 and only transmit power in closing course to the second gear unit 41, the transmission of these power passes through The same power output shaft 32 of motor 31 is realized, so as to significantly simplify the structure of transmission device so that transmission device Structure is more reasonable, compact.

Specifically, as shown in figure 4, the first power output portion is first gear 33, the second power output portion is with first Circumferential tooth section A second gear 34.When motor 31 is rotated, simultaneously first gear 33 and second gear 34 can be driven to rotate, the The rotation of one gear 33 is after completing to transmit power to the first gear unit 41, and second gear 34 starts to the second gear unit 42 provide power.Because there is second gear 34 one section on first circumferential tooth section A, the i.e. outer peripheral face of second gear 34 to be provided with Tooth, therefore first gear 33 is after completing to provide power to the first gear unit 41, the first circumferential tooth section A just starts and second Gear unit 42 is engaged, that is, starts to impart power to the second gear unit 42, and when the first circumferential tooth section A is not driven with second When unit 42 is engaged, the power that motor 31 is provided only passes to the first gear unit 41 by the rotation of first gear.

According to the utility model, as shown in Figure 1 and Figure 4, the first gear unit 41 includes being rotatably arranged in lid 21 Upper and pivot center perpendicular to lid 21 the 3rd gear 411, and be connected the gear 411 of first gear 33 and the 3rd it Between electronic-controlled power steering part 412, the 3rd gear 411 is set to coaxial with retainer 22.Wherein, when retainer 22 is being locked relative to pot 1 Positioning is put when being rotated between unlocked position, and electronic-controlled power steering part 412 is engaged with the first gear 33；When lid 21 is relative to pot When body 1 is rotated between open position and closed position, electronic-controlled power steering part 412 departs from first gear 33.By the setting, when During electronic-controlled power steering part 412 is engaged with first gear 33, electronic-controlled power steering part 412 drives the 3rd gear 411 to rotate, and now 3rd gear 411 can drive the retainer 22 inside lid 21 to move to realize the unblock or locking of lid 21, and work as electronic-controlled power steering When part 412 is disengaged from first gear 33, second gear 34 starts that the second gear unit 42 is provided power to realize lid 21 closure or openness.

It is preferably carried out at one in mode, the gear 411 of first gear 33 and the 3rd is spur gear, electronic-controlled power steering part 412 For the elongate posts being slidably disposed on lid 21.Wherein, the two ends of elongate posts be formed with respectively with first gear 33 and The straight-tooth section C of three gears 411 engagement.The two ends of elongate posts are formed with for engaging with the gear 411 of first gear 33 and the 3rd Straight-tooth section C, straight-tooth section C can be defined to the length of action of elongate posts, i.e., when the straight-tooth section C of elongate posts is in nibbling for restriction When closing in length, straight-tooth section C keeps engaging with the gear 411 of first gear 33 and the 3rd simultaneously, and when the straight-tooth section C of elongate posts takes off From restriction length of action when, straight-tooth section C simultaneously depart from the gear 411 of first gear 33 and the 3rd so that first driving dress 41 failures are put, the second drive device 42 is opened.Certainly, straight-tooth section C can also be nonlinear type, for example, can be to have necessarily The shaped form of radian, as long as ensure that it can be simultaneously corresponding with realization is merged with the gear 411 of first gear 33 and the 3rd Function.

It is preferably carried out at another in mode, the gear 411 of first gear 33 and the 3rd or helical gear, electronic-controlled power steering Part 412 is also the elongate posts being slidably disposed on lid 21.Wherein, the two ends of elongate posts be formed with respectively with first gear 33 and the 3rd gear 411 engage helical teeth section.By using helical gear so that the transmission of power is more steady, and noise is lower, simultaneously Larger axial load can be born, the service life of transmission device is extended.

It is further preferred that being provided with lid 21 for carrying out being formed with spacing chute, elongate posts to elongate posts The slide rail being engaged with chute.Certainly, it may also set up on lid 21 for elongate posts to be carried out with spacing slide rail, and in elongate posts It is formed with the chute being engaged with slide rail.Elongate posts can be achieved by the cooperation of chute and slide rail and the slip of lid 21 is fixed.

In embodiment as shown in Figure 4, the gear 411 of retainer 22 and the 3rd is co-axially located at dorsad the 3 of lid 21 On the surface of gear 411.Retainer 22 is rotated, the retainer 22 and the fastener phase in pot 1 with the rotation of the 3rd gear 411 Coordinate to realize the locking or unblock of lid 21 and pot 1.Specifically, can be set on the external margin of retainer 22 has first circumferentially Flange section, retainer 22 rotate enable to the first flange section be used to contacting with the second circumferential flange section in pot 1 to lock or Depart to unlock.Preferably, the first circumferential flange section is located at the lower section of the second circumferential flange section, so that the proper first circumferential flange Retainer 22 is locked relative to pot 1 when relative with the second flange, the phase of retainer 22 when the first circumferential flange is separated with the second flange Unlocked for pot 1.It is further preferred that in order that retainer 22 can be locked stably with pot 1, can be by the second circumferential flange The external edge along retainer 22 of the first circumferential flange is set greater than along the length of the circumferential direction extension of the internal edge of pot 1 The length of the circumferential direction extension of edge.

According to the utility model, with reference to shown in Fig. 1 and Fig. 4, the second gear unit 42 includes being used to be rotatably arranged in Bearing pin 421 in pot 1, bearing pin 421 is fixedly connected with lid 21.Wherein, being provided with bearing pin 421 can be with second gear 34 The first circumferential tooth section A engagements the second circumferential tooth section B；When lid 21 relative to pot 1 open position and closed position it Between when rotating, the first circumferential tooth section A is engaged with the second circumferential tooth section B；When retainer 22 relative to pot 1 latched position and with solution When being rotated between lock position, the first circumferential circumferential tooth section B of tooth section A and second depart from.Preferably, second circumferential tooth section B can be with Formation is being fixed on the single gear on bearing pin 421, on the outer peripheral face that also can be formed directly in bearing pin 421.

In addition, the utility model also proposed a kind of cooking utensils, the cooking utensils include above-mentioned lid switching mechanism.

According to cooking utensils of the present utility model, if desired it operationally solve lid 21 automatically in the locked state Lock and open, as shown in Fig. 2 then starting the button rotated for controlled motor 31, now motor 31 (is overlooked along clockwise direction During Fig. 2) rotate and drive first gear 33 to rotate clockwise, first gear 33 drives electronic-controlled power steering part 412 to move right, power Tumbler 412 drives the 3rd gear 411 to turn clockwise during moving right, and now the 3rd gear 411 drives lid 21 Internal retainer 22 is rotated, and when the first circumferential flange section of retainer 22 departs from relative to the second flange section of pot nside, is moved Power tumbler 412 departs from first gear 33, and now lid 21 is unlocked relative to pot 1；Motor 31 continues to rotate clockwise, dynamic Power tumbler 412 departs from the second circumferential tooth section in second gear 34 and the bearing pin 421 being fixed in pot 1 after first gear 33 B is engaged, so as to drive the rotate counterclockwise of bearing pin 421 to drive lid 21 to open relative to pot 1.

Similarly, if desired lid 21 is closed and locked automatically in the on state, as shown in figure 5, then controlled motor 31 rotate in the counterclockwise direction, now second gear 34 rotate drive the on bearing pin 421 second circumferential tooth section B to turn clockwise with Lid 21 is driven to be closed relative to pot 1, electronic-controlled power steering part 412 is engaged again with first gear 33 after lid 21 is closed, in electricity Under the drive rotated counterclockwise of machine 31, electronic-controlled power steering part 412 is to left movement, so that drive the 3rd gear 411 to rotate counterclockwise, And the 3rd gear drives the retainer 22 being located inside lid 21 to rotate, when the first circumferential flange section of retainer 22 is relative in pot When the second flange section in portion is relative or fits, lid 21 is locked relative to pot 1.

It is preferably carried out at one in mode, the detection for detecting the operation irregularity of motor 31 is provided with cooking utensils and is filled Put (not shown).For example during cooking utensils work, lid 21 is locked out relative to pot 1 in normal state , now motor is not rotated, if now motor 31 rotates because of failure, electronic-controlled power steering part 412 can be driven to transport Dynamic, electronic-controlled power steering part 412 drives the rotation of the 3rd gear 411 and causes lid 21 to be unlocked relative to pot 1, and now due to cooking Kitchen tools prepare food just at work, if lid 21 suddenly open by unblock, the high pressure inside cooking utensils will make food spray and scald Hinder user, in order to further improve the safety in utilization of cooking utensils, extra detection means can be set in cooking utensils, If detection means is detected in the course of the work in cooking utensils, motor 31 is abnormal, and danger is avoided by locked motor 31 Occur.In another example before cooking utensils work is started, lid 21 is after covering in pot 1, and detection means detects motor 31 hinder and can not continue to lock lid 21 and pot 1 for some reason, and now detection means control cooking utensils can not start the work that boils Make.

It is preferably carried out at another in mode, cooking utensils also include being used to prevent in the course of work of cooking utensils The electromagnetism push rod coordinated with safety switch is additionally provided with the safety switch that lid 21 is opened, lid 21 or pot 1, when lid 21 Relative to the triggering electromagnetism push rod of electronic-controlled power steering part 412 after the locking of pot 1 so that safety switch locks lid 21 and pot 1, and Away from safety switch to open lid 21 after lid 21 is unlocked relative to pot 1.The safety switch is used in cooking utensils Lid 21 and pot 1 are further locked in the course of work, is protected with providing dual locking to cooking utensils, so as to prevent because of electricity The failure of machine 31 causes cooking utensils lid 21 during boiling to unlock opening suddenly；Meanwhile, electromagnetism push rod is in the phase of lid 21 For opening lid 21 away from safety switch after the unblock of pot 1.

Lid opening and closing structure of the present utility model can realize lid 21 unlock or lock, the process of closure or openness it is automatic Change, so as to simplify the operating procedure of the lid 21 of manual operation cooking utensils, be conducive to being lifted the usage comfort of user.

Preferred embodiment of the present utility model is described in detail above in association with accompanying drawing, still, the utility model is not limited Detail in above-mentioned embodiment, can be to skill of the present utility model in range of the technology design of the present utility model Art scheme carries out a variety of simple variants, and these simple variants belong to protection domain of the present utility model.

It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance In the case of shield, it can be combined by any suitable means.In order to avoid unnecessary repetition, the utility model is to each Possible combination is planted no longer separately to illustrate.

In addition, can also be combined between a variety of embodiments of the present utility model, as long as it is not disobeyed Thought of the present utility model is carried on the back, it should equally be considered as content disclosed in the utility model.

Claims (13)

1. a kind of lid switching mechanism, it is characterised in that motor (31) including pot (1), in pot (1), be articulated in Circular lid (21) on the pot (1), the retainer (22) being articulated on the lid (21), on lid (21) The first gear unit (41) and the second gear unit (42) in the pot, wherein,

The retainer (22) is vertical with lid (21) relative to the pivot center of lid (21), and motor (31) driving first is passed Moving cell (41) is moved to drive the retainer (22) to be rotated between the locked relative to pot (1),

The lid (21) is parallel with lid (21) relative to the pivot center of pot (1), and motor (31) driving second is passed Moving cell (42) is moved to drive lid (21) to be rotated relative between the open position of pot (1) and closed position,

Wherein, the motor (31) drives the second gear unit (42) transmission described in the first gear unit (41) Shi Buxiang dynamic Power, and the motor (31) drives the first gear unit (41) transmission power described in the second gear unit (42) Shi Buxiang.

2. lid switching mechanism according to claim 1, it is characterised in that on the power output shaft (32) of the motor (31) Synchronous connection has the first power output portion and the second power output portion, the first power output portion and first gear unit (41) coordinate so that the driving force of motor (31) is transferred into retainer (22), the second power output portion matches somebody with somebody with the second gear unit (42) Close the driving force of motor (31) being transferred to lid (21), wherein,

When the first power output portion and the first gear unit (41) link, the second power output portion and the second gear unit (42) Separation, when the first power output portion is separated with the first gear unit (41), the second power output portion and the second gear unit (42) link.

3. lid switching mechanism according to claim 2, it is characterised in that the first power output portion is first gear (33), the second power output portion is the second gear (34) with the first circumferential tooth section (A).

4. lid switching mechanism according to claim 3, it is characterised in that first gear unit (41) includes rotatable Ground is arranged on the lid (21) and pivot center is perpendicular to the 3rd gear (411) of the lid (21), and transmission connects The electronic-controlled power steering part (412) between the first gear (33) and the 3rd gear (411) is connected on, the 3rd gear (411) sets It is set to retainer (22) coaxially, wherein,

When the retainer (22) is rotated between locked and unlocked positions relative to pot (1), the electronic-controlled power steering part (412) engaged with the first gear (33)；

When the lid (21) is rotated relative to pot (1) between open position and closed position, the electronic-controlled power steering part (412) depart from the first gear (33).

5. lid switching mechanism according to claim 4, it is characterised in that the first gear (33) and the 3rd gear (411) it is spur gear, electronic-controlled power steering part (412) is the elongate posts being slidably disposed on the lid (21), wherein, strip The two ends of bar are formed with the straight-tooth section (C) engaged respectively with the first gear (33) and the 3rd gear (411).

6. lid switching mechanism according to claim 5, it is characterised in that be provided with the lid (21) for described Elongate posts carry out being formed with the slide rail being engaged with the chute in spacing chute, the elongate posts.

7. the lid switching mechanism according to any one of claim 3 to 6, it is characterised in that second gear unit (42) bearing pin (421) for being used to be rotatably arranged in pot (1) is included, the bearing pin (421) is solid with the lid (21) Fixed connection, wherein,

The the second circumferential tooth that can be engaged with the first circumferential tooth section (A) of the second gear (34) is provided with bearing pin (421) Section (B),

When the lid (21) is rotated relative to pot (1) between open position and closed position, the described first circumferential tooth Section (A) is engaged with the described second circumferential tooth section (B)；

When the retainer (22) relative to pot (1) in latched position and when being rotated between unlocked position, described first is circumferential Tooth section (A) departs from the described second circumferential tooth section (B).

8. lid switching mechanism according to claim 7, it is characterised in that the described second circumferential tooth section (B) is formed directly into On the outer peripheral face of the bearing pin (421).

9. lid switching mechanism according to claim 1, it is characterised in that be provided with the external margin of the retainer (22) First circumference flange section, the retainer (22), which rotates, enables to the first flange section to be used to circumferentially turn over second in pot (1) Side section contact is unlocked with locking or departing from.

10. a kind of cooking utensils, it is characterised in that including lid switching mechanism as claimed in any one of claims 1-9 wherein.

11. cooking utensils according to claim 10, it is characterised in that the cooking utensils also include being used to cook described Prepare food kitchen tools the course of work in prevent the lid (21) from opening safety switch, be additionally provided with lid (21) or pot (1) The electromagnetism push rod coordinated with safety switch, electronic-controlled power steering part (412) triggers electromagnetism after lid (21) is locked relative to pot (1) Push rod is so that safety switch locks lid (21) and pot (1), and the remote peace after lid (21) is relative to pot (1) unblock Full button is to open the lid (21).

12. cooking utensils according to claim 10, it is characterised in that the cooking utensils also include and the motor (31) it is connected and for the detection means of the locked motor when the motor (31) breaks down.

13. cooking utensils according to claim 10, it is characterised in that the cooking utensils are pressure cooker.