CN210018947U - Pressure regulating mechanism, cover body and pressure cooking utensil - Google Patents

Abstract

The utility model relates to a pressure regulating mechanism, a cover body and a pressure cooking appliance, which comprises a bracket; the fitting piece can do reciprocating linear motion along a first direction relative to the bracket; one end of the pressure regulating part is abutted against the matching part, the other end of the pressure regulating part is matched with the pressure regulating valve, and the pressure regulating part can move relative to the bracket along a second direction crossed with the first direction under the action of the matching part and is linked with the pressure regulating valve to move along the second direction; a trigger configured with the mating member to form a switch assembly. The trigger piece and the matching piece are constructed to form a switch assembly, and when the switch assembly works, the controller can control the movement position of the matching piece relative to the bracket along the first direction according to a trigger signal sent by the switch assembly, so that the positioning accuracy is ensured.

Description

Pressure regulating mechanism, cover body and pressure cooking utensil

Technical Field

The utility model relates to a cooking utensil technical field especially relates to a pressure regulating mechanism, lid and pressure cooking utensil.

Background

With the development and scientific progress of the society, people are pursuing quality of life more and more, and cooking appliances such as electric cookers and electric pressure cookers are widely applied to daily life of people and become indispensable tools in life of people. Wherein, the electric pressure cooker plays an especially important role in the life of people.

The electric pressure cooker mainly comprises a cooker body and a cover body, wherein the cover body can be assembled on the cooker body in an opening and closing manner, and a pressure regulating mechanism is arranged in the cover body so as to regulate the pressure in the cooker. However, the traditional voltage regulating mechanism is difficult to find the original point after being electrified due to external interference, so that the problem of inaccurate positioning exists.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a pressure regulating mechanism, a lid and a pressure cooking appliance with accurate positioning, aiming at the problem of inaccurate positioning of the conventional pressure regulating mechanism.

A pressure regulating mechanism comprising:

a support;

the fitting piece can do reciprocating linear motion along a first direction relative to the bracket;

the pressure regulating part is arranged between the matching part and the pressure regulating valve, can move along a second direction crossed with the first direction relative to the bracket under the action of the matching part, and is linked with the pressure regulating valve to move along the second direction;

a trigger configured with the mating member to form a switch assembly.

In one embodiment, one of the triggering element and the matching element is a sensing element, and the other one of the triggering element and the matching element is a sensed element, and when the matching element moves relative to the triggering element to reach a preset condition, the sensing element and the sensed element generate a triggering signal.

In one embodiment, one of the sensing element and the sensed element is a photoelectric switch, and the other one is a blocking piece, and when the blocking piece moves to block light of the photoelectric switch, the sensing element and the sensed element generate the trigger signal.

In one embodiment, one of the trigger piece and the mating piece is a contact piece, and the other is a contacted piece, and when the mating piece is contacted relative to the trigger piece, the contact piece and the contacted piece generate a trigger signal.

In one embodiment, one of the contact member and the contacted member is a microswitch, and the other is a pressing portion, and the pressing portion presses the microswitch to generate the trigger signal when the mating member is in contact with the trigger member.

In one embodiment, the engagement member is a rolling friction fit with the pressure adjustment member.

In one embodiment, the pressure regulating mechanism further includes a driving member connected to the mating member for driving the mating member to reciprocate along the first direction.

In one embodiment, the pressure regulating mechanism further comprises a transmission member, and the transmission member is in transmission connection between the driving member and the mating member;

the transmission piece comprises a first engaging piece and a second engaging piece which are engaged with each other, the first engaging piece is connected with the driving end of the driving piece, and the second engaging piece is connected with the matching piece.

A cover body comprises a body, a pressure regulating valve and the pressure regulating mechanism, wherein the pressure regulating mechanism and the pressure regulating valve are both arranged in the body, and a pressure regulating piece of the pressure regulating mechanism is matched with the pressure regulating valve to regulate pressure.

A pressure cooking utensil comprises a cooking main body and the cover body, wherein the cover body is arranged on the cooking main body in a covering and uncovering mode, and the pressure regulating mechanism is matched with the pressure regulating valve to regulate the pressure in the cooking main body.

In one embodiment, the pressure cooking appliance further comprises a controller, the switch assembly is electrically connected with the controller, and the controller controls the movement position of the matching piece relative to the bracket along the first direction according to a trigger signal sent by the switch assembly.

According to the pressure regulating mechanism, the cover body and the pressure cooking utensil, the trigger piece and the matching piece structure form the switch assembly, and when the pressure regulating mechanism works, the controller can control the movement position of the matching piece relative to the support along the first direction according to the trigger signal sent by the switch assembly, so that the positioning accuracy is ensured.

Drawings

Fig. 1 is an exploded view of a cover of a pressure cooking device according to an embodiment of the present invention;

FIG. 2 is an exploded view of one of the pressure regulating mechanisms of the cover shown in FIG. 1;

FIG. 3 is an assembly view from a perspective of the pressure regulating mechanism shown in FIG. 2;

FIG. 4 is an assembly view from another perspective of the pressure regulating mechanism shown in FIG. 2;

FIG. 5 is a cross-sectional view of the pressure regulating mechanism shown in FIG. 2;

FIG. 6 is a partial assembly view of the pressure regulating mechanism shown in FIG. 2;

FIG. 7 is an assembly view of the cover shown in FIG. 1 with another pressure regulating mechanism in an initial state;

fig. 8 is a partial structural view of the pressure regulating mechanism shown in fig. 7;

FIG. 9 is a cross-sectional view of the pressure regulating mechanism shown in FIG. 7 in a trigger orientation;

FIG. 10 is another partial block diagram of the pressure regulating mechanism shown in FIG. 7;

FIG. 11 is an assembly view of the pressure regulating mechanism of the cover shown in FIG. 1 in an initial state;

FIG. 12 is an enlarged view at A in FIG. 11;

FIG. 13 is an assembly view of the pressure regulating mechanism of the cover shown in FIG. 1 in a trigger position;

fig. 14 is an enlarged view at B in fig. 13.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, an embodiment of the present invention provides a pressure cooking appliance, including a cooking main body and a cover 100, the cooking main body is used for storing food, and the cover 100 is covered on the cooking main body in an openable manner to ensure that the cooking main body has a required pressure, so as to cook the food stored in the cooking main body.

The lid 100 includes a main body 10, a pressure regulating valve, and a pressure regulating mechanism 20, and the main body 10 is disposed at an opening portion of the cooking main body and opens and closes the cooking main body according to a user operation. The pressure regulating valve is assembled on the body 10 and used for regulating the pressure in the cooking body under the linkage of the pressure regulating mechanism 20 so as to finish the cooking of food in the cooking body.

The body 10 includes an inner cover 12 and a face cover 11, and the inner cover 12 is disposed to face the inside of the cooking body and between the cooking body and the face cover 11. The front cover 11 is configured to face a user, and keys (such as a cooking mode selection key, a start key, a warm key, etc.) for the user to operate may be provided thereon as required.

The pressure regulating valve is assembled to the inner lid 12 and includes a pressure valve and a pressure release valve. The pressure regulating mechanism 20 is located between the inner lid 12 and the face lid 11, and cooperates with the pressure regulating valve to regulate the pressure in the cooking body, thereby ensuring that the cooking body has a desired pressure therein.

In one embodiment, the inner lid 12 is provided with a first steam port and a second steam port spaced from each other, the pressure valve is disposed at the first steam port, and the pressure regulating mechanism 20 can be actuated to close the first steam port for pressurizing the inside of the cooking body; the pressure relief valve is disposed at the second steam port, and the second steam port can be opened by the operation of the pressure regulating mechanism 20, so as to relieve pressure in the cooking body.

Referring to fig. 2 and 3, the pressure regulating mechanism 20 includes a bracket 21, a pressure regulating member 22 and a fitting member 23, the bracket 21 is assembled on the inner lid 12, the pressure regulating member 22 and the fitting member 23 are both assembled on the bracket 21, and the pressure regulating member 22 is disposed between the fitting member 23 and the pressure regulating valve and moves relative to the bracket 21 under the driving of the fitting member 23 to control the operation of the pressure regulating valve. It is understood that in other embodiments, the pressure adjusting member 22 and the engaging member 23 may be directly mounted on the inner lid 12, and are not limited thereto.

In one embodiment, the bracket 21 is formed with a through hole 211, the pressure regulating member 22 is assembled in the through hole 211 of the bracket 21, and the pressure regulating member 22 moves in a second direction relative to the through hole 211 to drive the pressure regulating valve to perform corresponding actions. It is understood that, in other embodiments, the bracket 21 may further have a sliding slot, the pressure regulating member 22 is mounted in the sliding slot of the bracket 21, and the pressure regulating member 22 moves in the second direction relative to the sliding slot, which is not limited herein.

Specifically, the engaging member 23 is reciprocally movable in a first direction with respect to the holder 21, the engaging member 23 is in rolling friction engagement with the pressure regulating member 22, so that the pressure regulating member 22 is movable in the through hole 211 in a second direction intersecting the first direction with respect to the holder 21 by the engaging member 23, and the pressure regulating valve is movable in the second direction with respect to the holder 21 by the pressure regulating member 22.

The fitting member 23 is in rolling friction fit with the pressure regulating member 22, and the friction force is small, so that the sensitivity is high, and the pressure regulating precision of the pressure regulating mechanism 20 is high.

Referring to fig. 4, specifically, the engaging element 23 is fixed to the bracket 21 by engaging, i.e. the engaging element 23 is fixed to the bracket 21 by the catch 24, so that the engaging element 23 and the bracket 21 are not disengaged in the direction of mutual engagement, but the catch 24 does not restrict the movement of the engaging element 23 relative to the bracket 21 in the first direction.

In this embodiment, the first direction is perpendicular to a second direction, for example, when the pressure cooking appliance is placed on a horizontal table, the first direction is a horizontal section direction of the pressure cooking appliance, and the second direction is a height section direction of the pressure cooking appliance. It is understood that, in other embodiments, the first direction and the second direction may be non-perpendicular to each other, and are not limited herein.

Further, the engaging member 23 is reciprocally linearly moved in the first direction with respect to the holder 21, and the engaging member 23 can drive the pressure-adjusting member 22 to linearly move in the through hole 211 in the second direction. It is understood that in other embodiments, the engaging element 23 may also reciprocate in a curve along the first direction relative to the bracket 21, and the engaging element 23 drives the pressure regulating member to move linearly along the second direction in the through hole 211, which is not limited herein.

Referring to fig. 2, the pressure regulating mechanism 20 further includes a rolling member 25 and an actuating structure (not shown), the rolling member 25 is mounted on one of the engaging member 23 and the pressure regulating member 22, and the actuating structure is disposed on the other of the engaging member 23 and the pressure regulating member 22. In this way, the rolling member 25 and the actuating structure can cooperate with each other to drive the pressure regulating member 22 to move in the through hole 211 along the second direction relative to the bracket 21 during the movement of the engaging member 23 relative to the bracket 21, so as to control the pressure regulating valve. The pressure regulating mechanism 20 is matched with the actuating structure through the rolling part 25 to realize rolling friction fit between the fitting part 23 and the pressure regulating part 22, and the pressure regulating precision of the pressure regulating mechanism 20 is high due to relatively small friction force and high sensitivity.

In the first embodiment, the pressure regulating member 22 includes a pressure member 221 and a pressure relief member 222, the pressure member 221 is disposed between the fitting member 23 and the pressure valve, and maintains one end in contact with the fitting member 23 to be able to press the pressure valve through the other end under the driving of the fitting member 23 to realize the pressurization of the cooking body; one end of the pressure relief member 222 abuts against the fitting 23, and the other end of the pressure relief member 222 is fitted to the pressure relief valve. Correspondingly, the actuating structure is configured as an inclined portion inclined with respect to both the first direction and the second direction, and the rolling member 25 is configured as a roller.

In one mode, the rolling member 25 and the actuating structure are used to control one of the pressing member 221 or the pressure releasing member 222, an inclined portion is provided on one of the inclined surface of the pressing member 221 or the pressure releasing member 222 to be controlled and the engaging member 23, and a roller is provided on the other to roll by the engaging member 23. In this way, the engaging member 23 can cooperate with the roller via the inclined surface during the movement relative to the bracket 21 to drive the pressure member 221 or the pressure relief member 222 to move in the second direction relative to the bracket 21, so as to control the pressure valve or the pressure relief valve.

Alternatively, the inclined portion is configured as two sub-inclined surfaces on one of the pressing member 221 or the pressure releasing member 222 to be controlled and the mating member 23, the two sub-inclined surfaces are connected to form a V-shape having an ascending section and a descending section, so that the pressing member 221 or the pressure releasing member 222 can be controlled by the movement in both directions (the reciprocating direction in the first direction), and the roller is configured on the other to roll by the mating member 23.

In another form, the actuating structure is used to control both the pressure 221 and pressure 222 members, in this case, the inclined portion is disposed on the mating member 23, and the inclined portion includes two sub-inclined surfaces (the inclined surface includes two sub-inclined surfaces) connected to form an ascending section and a descending section, the roller includes a pressure wheel 251 and a pressure relief wheel 252, the pressure wheel 251 is disposed on the pressure member 221, the pressure relief wheel 252 is disposed on the pressure relief member 222, thus, when the engaging member 23 moves relative to the bracket 21, one of the uphill and downhill sections of the inclined portion cooperates with the pressing wheel 251 to drive the pressing member 221 to move in the second direction relative to the bracket 21, to control the pressurising valve, the other of the uphill and downhill sections of the ramp cooperates with the pressure relief wheel 252 to drive the pressure relief member 222 in a second direction relative to the bracket 21 to control the pressure relief valve.

Or the inclined part comprises two independent (non-connected) sub-inclined surfaces, wherein one sub-inclined surface forms an ascending section and the other sub-inclined surface forms a descending section, which is not limited herein.

In the second embodiment, the difference from the first embodiment is that the actuating structure further includes a roller disposed on the inclined portion, the roller of the actuating structure is in contact with the roller of the rolling member 25, and when the engaging member 23 moves in the first direction relative to the bracket 21, a component force of the roller of the actuating structure acting on the roller of the rolling member 25 drives the roller of the rolling member 25 to move the pressure regulating member 22 in the second direction relative to the bracket 21.

In the first and second embodiments, for convenience of arrangement, the inclined surface of the actuating structure is formed on the mating member 23, and the rolling member 25 is mounted at an end of the pressure regulating member 22 abutting against the mating member 23, so that when the mating member 23 moves relative to the bracket 21, a component force applied to the roller of the rolling member 25 by the inclined surface of the actuating structure drives the roller of the rolling member 25 to drive the pressure regulating member 22 to move relative to the bracket 21 in the second direction. It will be understood that, in another embodiment, the inclined surface of the actuating structure may also be opened on the pressure regulating member 22, and the roller of the rolling member 25 is assembled on the mating member 23, which is not limited herein.

In the third embodiment, the actuating structure and the rolling member 25 are configured as rollers, and when the roller of the actuating structure and the roller of the rolling member 25 are simultaneously located in the second direction, the upper roller presses against the lower roller, so that the pressure regulating member 22 connected to the lower roller moves in the second direction relative to the bracket 21.

As can be seen from the above, in the first to third embodiments, the elastic member sleeved outside the pressure regulating member 22 may be separately provided to realize the resetting of the pressure regulating member.

Referring to fig. 5, in the fourth embodiment, the actuating structure is configured as an inclined portion inclined with respect to both the first direction and the second direction, the rolling element 25 is configured as a roller, the inclined portion is configured as a first inclined section 261 and a second inclined section 262 arranged in parallel, the first inclined section 261 and the second inclined section 262 are spaced along the movement direction of the pressure adjusting element 22, and both define a first rolling channel 271 for the roller to pass through, the roller abuts between the first inclined section 261 and the second inclined section 262, and the pressure adjusting element 22 can reciprocate along the second direction relative to the bracket 21 under the action of the engaging element 23 when the roller moves in the first rolling channel 271.

In one mode, the rolling member 25 and the actuating structure are used to control one of the pressure member 221 or the pressure relief member 222, the first inclined section 261 and the second inclined section 262 are configured as inclined surfaces on one of the pressure member 221 or the pressure relief member 222 and the engaging member 23 to be controlled, and the roller is configured on the other to roll under the action of the engaging member 23. Thus, when the matching element 23 moves relative to the bracket 21, the roller moves in the first rolling channel 271, and the roller moves downward along the second direction relative to the bracket 21 under the action of a component of the upper inclined surface, and the roller moves upward along the second direction relative to the bracket 21 under the action of a component of the lower inclined surface, so in this embodiment, the actuating structure can drive the roller to drive the pressure regulating element 22 to move along the reciprocating direction of the second direction, that is, the reset of the pressure regulating element 22 can be realized by actuating the structure itself, and the reset element is not required to be additionally arranged to realize the reset of the pressure regulating element 22.

Alternatively, the first inclined section 261 and the second inclined section 262 are both configured as two sub-inclined surfaces on the mating member 23, the roller is configured on the pressing member 221 or the pressure releasing member 222, and the two sub-inclined surfaces are connected to form a V-shape having an ascending section and a descending section, so that the pressing member 221 or the pressure releasing member 222 can be controlled by the movement in both directions (the reciprocating direction in the first direction) to roll under the action of the mating member 23.

In another form, the actuating structure is used to control both the pressure 221 and pressure 222 members, in this case, the first inclined section 261 and the second inclined section 262 include two sub-inclined surfaces connected to form an ascending section and a descending section, the roller includes a pressure wheel 251 and a pressure relief wheel 252, the pressure wheel is disposed on the pressure member 221, the pressure relief wheel 252 is disposed on the pressure relief member 222, thus, when the engaging member 23 moves relative to the bracket 21, one of the ascending and descending slope sections of the first and second slope sections 261 and 262 cooperates with the pressing wheel 251 to drive the pressing member 221 to move relative to the bracket 21 in the second direction, to control the pressurization valve, the other of the uphill and downhill sections of the first and second inclined sections 261 and 262 cooperates with the pressure relief wheel 252 to drive the pressure relief member 222 in a second direction relative to the bracket 21 to control the pressure relief valve.

Or the first inclined section 261 and the second inclined section 262 include two independent sub-inclined planes, one of which forms an ascending section and the other of which forms a descending section, which is not limited herein.

Referring to fig. 5, in particular, the fitting element 23 includes a first fitting portion 231 and a second fitting portion 232, the first fitting portion 231 includes a first inclined section 261, and the second fitting portion 232 includes a second inclined section 262. When the first engaging portion 231 is engaged with the second engaging portion 232, the first inclined section 261 and the second inclined section 262 are configured as the above-mentioned actuating structure, and the space therebetween forms the above-mentioned first rolling channel 271.

In other embodiments, when the first matching portion 231 is abutted with the second matching portion 232, a second rolling channel 272 communicated with the first rolling channel 271 is further formed, when the matching member 23 moves in the first direction relative to the bracket 21, the roller can enter the second rolling channel 272 from the first rolling channel 271 or enter the first rolling channel 271 from the second rolling channel 272, and when the roller moves in the second rolling channel 272, the matching member 23 does not apply any force to the pressure-regulating member 22 in the second direction, so that when the roller moves in the second rolling channel 272, the pressure-regulating member 22 is kept still in the second direction relative to the bracket 21.

In one mode, the rolling member 25 and the actuating structure are used for controlling one of the pressure member 221 or the pressure relief member 222, the first inclined section 261 and the second inclined section 262 are configured as an inclined surface on the controlled one of the pressure member 221 or the pressure relief member 222 and the mating member 23, or the first inclined section 261 and the second inclined section 262 include two sub-inclined surfaces connected to form an inclined surface having an inclined portion and an inclined portion, when the first mating portion 231 and the second mating portion 232 are in butt joint to form a second rolling channel 272, the second rolling channel 272 is communicated with one end of the first rolling channel 271, and after the pressure wheel 251 or the pressure relief wheel 252 enters the second rolling channel 272 from the first rolling channel 271, the pressure member 221 or the pressure relief member 222 is fixed in the second direction relative to the bracket 21.

Alternatively, the first inclined section 261 and the second inclined section 262 are both configured as two sub-inclined surfaces on the fitting member 23, when the first fitting portion 231 and the second fitting portion 232 are abutted to form two second rolling channels 272, and the two second rolling channels 272 are respectively communicated with two ends of the first rolling channel 271, so that the roller can enter the second rolling channel 272 from the first rolling channel 271 in two directions (reciprocating directions in the first direction).

In another mode, the actuating structure is used for controlling both the pressure member 221 and the pressure relief member 222, the first inclined section 261 and the second inclined section 262 include two sub-inclined surfaces connected to form an ascending section and a descending section, when the first matching portion 231 and the second matching portion 232 are butted to form a second rolling channel 272, the second rolling channel 272 is communicated with one end of the first rolling channel 271, and after the pressure wheel 251 or the pressure relief wheel 252 enters the second rolling channel 272 from the first rolling channel 271, the pressure member 221 or the pressure relief member 222 can be fixed relative to the bracket 21 along the second direction.

Or, after the first matching portion 231 and the second matching portion 232 are butted, two second rolling channels 272 are formed, and the two second rolling channels 272 are respectively communicated with two ends of the first rolling channel 271, so that after the pressure wheel 251 enters the second rolling channels 272 from the first rolling channel 271, the pressure member 221 can be fixed relative to the bracket 21 along the second direction, and after the pressure wheel 252 enters the other rolling channel from the first rolling channel 271, the pressure member 222 can be fixed relative to the bracket 21 along the second direction.

More specifically, the first fitting portion 231 is disposed close to the bracket 21 with respect to the second fitting portion 232. In other embodiments, the first mating portion 231 may also be disposed away from the bracket 21 relative to the second mating portion 232, which is not limited herein.

In this embodiment, the actuating structure is used to control both the pressure member 221 and the pressure relief member 222, the first inclined section 261 and the second inclined section 262 include two sub-inclined surfaces connected to form an ascending section and a descending section, the sub-inclined surface of the descending section on the left side in fig. 5 cooperates with the pressure wheel 251 to drive the pressure member 221 to move in the second direction relative to the frame 21, and the ascending section on the right side in fig. 5 cooperates with the pressure relief wheel 252 to drive the pressure relief member 222 to move in the second direction relative to the frame 21.

The space between the first inclined section 261 and the second inclined section 262 forms the above-mentioned first rolling channel 271, the first matching portion 231 and the second matching portion 232 are butted to form two second rolling channels 272, wherein one second rolling channel 272 is communicated with the left end (refer to fig. 5) of the first rolling channel 271, the other second rolling channel 272 is communicated with the right end (refer to fig. 5) of the first rolling channel 271, when the matching piece 23 moves towards the right side relative to the bracket 21, the pressure wheel 251 can enter the second rolling channel 272 at the left end thereof from the first rolling channel 271, and the pressure relief wheel 252 can enter the first rolling channel 271 from the second rolling channel 272 at the right end thereof. When the pressure wheel 251 enters the second rolling channel 272, the pressure piece 221 no longer applies pressure to the pressure valve, and the pressure valve no longer blocks the first steam port, and when the pressure relief wheel 252 enters the second rolling channel 272, the pressure piece 222 no longer applies pressure to the pressure relief valve, and the pressure relief valve will block the second steam port.

More specifically, the first matching portion 231 and the second matching portion 232 are butted to form a third rolling channel 273, the third rolling channel 273 divides the first rolling channel 271 into a first sub rolling channel and a second sub rolling channel respectively located at two ends of the first rolling channel and the second rolling channel, the first sub rolling channel is matched with the pressure wheel 251, and the second sub rolling channel is matched with the pressure relief wheel 252.

When the pressure wheel 251 is located in the third rolling channel 273, the length of the pressure member 221 extending downward out of the bracket 21 is the longest, and the sealing force of the pressure regulating valve for sealing the first steam port is the largest, and when the pressure relief wheel 252 is located in the third rolling channel 273, the length of the pressure relief member 222 extending downward out of the bracket 21 is the longest, and the pressure relief valve can ensure that the pressure cooking body is in a complete pressure relief state.

Specifically, the first rolling sub-passage and the second rolling sub-passage are symmetrically disposed with respect to the third rolling passage 273, and it is understood that in other embodiments, the first rolling sub-passage and the second rolling sub-passage may not be symmetrically disposed with respect to the third rolling passage 273, and are not limited herein.

It should be noted that, when the engaging element 23 moves in the first direction relative to the bracket 21, not only the pressing element 221 but also the pressure relief element 222 can move in the second direction relative to the bracket 21, but the engaging element 23 can only drive one of the pressing element 221 and the pressure relief element 222 to move in the second direction relative to the bracket 21, and the other one of the pressing element 221 and the pressure relief element 222 remains stationary in the second direction relative to the bracket 21, that is, the pressure regulating mechanism 20 cannot simultaneously release pressure during pressing and cannot simultaneously release pressure during pressure releasing.

That is, when the pressure member 221 cooperates with the pressure valve to pressurize the inside of the cooking body, the pressure relief valve is in a non-pressure relief state, and when the pressure member 222 cooperates with the pressure relief valve to relieve the pressure in the cooking body, the pressure valve is in a non-pressure relief state.

In this embodiment, the pressure-applying member 221 and the pressure-releasing member 222 are rod-shaped structures. Meanwhile, the bracket 21 is provided with two through holes 211 for respectively assembling the pressurizing member 221 and the pressure relief member 222, the pressurizing member 221 and the pressure relief member 222 are respectively assembled in the two through holes 211 of the bracket 21, and the pressure regulating member 22 moves along the second direction relative to the through holes 211.

It is understood that in other embodiments, the pressure-applying member 221 and the pressure-releasing member 222 may be any other structures, and only need to be able to control the pressure-regulating valve under the driving of the fitting member 23.

Referring to fig. 2, in one embodiment, the pressure regulating mechanism 20 further includes a driving member 28, and the driving member 28 is connected to the engaging member 23 for driving the engaging member 23 to reciprocate along the first direction.

In particular, the drive 28 is a stepper motor. In other embodiments, the driving member 28 may be a cylinder as long as the driving engagement member 23 can reciprocate in the first direction, and the type of the driving member 28 is not limited herein.

Further, the pressure regulating mechanism 20 further includes a transmission member 29, the transmission member 29 is connected between the driving member 28 and the fitting member 23, the transmission member 29 includes a first engaging member 291 and a second engaging member 292 which are engaged with each other, the first engaging member 291 is connected to the driving end of the driving member 28, the second engaging member 292 is connected to the fitting member 23, the driving member 28 moves to drive the first engaging member 291 to move, and the first engaging member 291 is engaged with the second engaging member 292 to drive the fitting member 23 to reciprocate along the first direction.

Specifically, the first engaging member 291 is a gear, the second engaging member 292 is a rack, the stepping motor drives the gear to rotate, and the gear is engaged with the rack to drive the fitting member 23 to perform reciprocating linear motion along the first direction, so that the pressure adjusting member 22 can perform stepless motion relative to the bracket 21 along the second direction, thereby realizing stepless large-range adjustment of the pressure in the cooking body.

More specifically, the driving member 28 is fitted to the bracket 21, the first engaging frame 291 is fitted to the driving end of the driving member 28, and the second engaging piece 292 is connected to the first fitting portion 231 of the fitting member 23. It is understood that in other embodiments, the driving element 28 can be assembled at other positions of the cover body 100, such as the driving element 28 is directly assembled on the inner cover 12, the assembling position of the driving element 28 is not limited herein, and the second engaging element 292 can be connected with the second matching portion 232 of the matching component 23, which is also not limited herein.

Referring to fig. 5, in an embodiment, the fitting member 23 further includes a fool-proof portion 233, the fool-proof portion 233 is connected to the second fitting portion 232, and the mounting accuracy of the fitting member 23 can be ensured by the fool-proof portion 233.

In one embodiment, the pressure cooking appliance further comprises a controller, the driving member 28 being electrically connected to the controller, the controller being adapted to control the driving operation of the driving member 28.

Referring to fig. 6, the pressure regulating mechanism 20 further includes a trigger 210, the trigger 210 and the fitting 23 are configured to form a switch assembly, and the switch assembly is electrically connected to the controller, and the controller controls the movement position of the fitting 23 relative to the bracket 21 along the first direction according to a trigger signal sent by the switch assembly, so as to ensure the positioning accuracy of the pressure regulating mechanism 20.

Specifically, the controller controls the stepping motor to stop rotating when the switch assembly sends out the trigger signal, so that the controller can control the forward and reverse rotation of the stepping motor to control the movement position of the fitting piece 23 relative to the bracket 21 along the first direction, and the positioning accuracy is ensured.

In one embodiment, one of the triggering element 210 and the engaging element 23 is a sensing element, and the other is a sensed element, and when the engaging element 23 moves relative to the triggering element 210 to reach a predetermined condition, the sensing element and the sensed element generate a triggering signal. That is, the trigger 210 and the engaging element 23 are triggered by induction, and when the engaging element 23 moves relative to the trigger 210 to reach a predetermined condition, a trigger signal is generated.

It should be noted that the preset condition may be a preset position, a preset acting force, or an interference of one of the engaging element 23 and the triggering element 210 with the other, and is not limited herein.

Referring to fig. 6, specifically, one of the sensing element and the sensed element is a photoelectric switch, and the other one is a blocking piece 234, when the blocking piece 234 moves to block light of the photoelectric switch, the sensing element and the sensed element generate a trigger signal.

Further, the triggering element 210 is a photoelectric switch, the fitting member 23 further includes the above-mentioned blocking piece 234, the blocking piece 234 is connected with the second fitting portion 232, and the photoelectric switch is assembled on the surface cover 11 and sealed with the surface cover 11 by a sealing ring. When the step-driving member 28 drives the engaging member 23 to move relative to the bracket 21 in the first direction through the transmission member 29 until the blocking piece 234 blocks the light of the photoelectric switch, the switch assembly is turned on and generates a trigger signal, and the controller controls the stepping motor to stop rotating, so that the controller controls the forward and reverse rotation of the stepping motor to control the moving position of the engaging member 23 relative to the bracket 21 in the first direction, thereby ensuring the positioning accuracy.

It is understood that in other embodiments, the triggering member 210 can be a blocking plate 234, and the mating member 23 includes the aforementioned photoelectric switch, which is not limited herein.

In another embodiment, one of the triggering element 210 and the mating element 23 is a contact element, and the other is a contacted element, and when the mating element 23 contacts with respect to the triggering element 210, the contact element and the contacted element generate a triggering signal. That is, the trigger 210 and the mating member 23 are triggered by contact therebetween, and a trigger signal is generated when the mating member 23 moves relative to the trigger 210 until the two contact.

Referring to fig. 7 and 8, specifically, one of the contact member and the contacted member is a contact switch, and the other is a pressing portion 235, and when the mating member 23 contacts with respect to the trigger member 210, the pressing portion 235 presses the micro switch to generate a trigger signal.

Referring to fig. 9 and 10, further, the triggering element 210 is a micro switch, the engaging element 23 includes the pressing portion 235, the pressing portion 235 is connected to the first engaging portion 231, and the micro switch is mounted on the bracket 21. When the driving member 28 drives the fitting member 23 to move relative to the bracket 21 in the second direction through the transmission member 29 until the pressing portion 235 of the driving member contacts with the micro switch, the switch assembly is turned on and generates a trigger signal, and the controller controls the stepping motor to stop rotating, so that the controller controls the forward and reverse rotation of the stepping motor to control the moving position of the fitting member 23 relative to the bracket 21 in the first direction, thereby ensuring the positioning accuracy.

It is understood that in other embodiments, the pressing portion 235 of the trigger 210 may be provided, and the engaging member 23 may include the micro switch, which is not limited herein.

An embodiment of the present invention further provides a lid 100 included in the above-mentioned pressure cooking device, and provides a pressure regulating mechanism 20 included in the above-mentioned lid 100.

The utility model discloses specific embodiment provides a pressure cooking utensil's theory of operation as follows:

before the working principle of the pressure cooking appliance is introduced, it is assumed that the initial state of the pressure regulating mechanism 20 of the pressure cooking appliance is a pressurization state, and the positioning trigger state of the pressure regulating mechanism 20 of the pressure cooking appliance is a pressure relief state, and the working principle of the pressure cooking appliance is simply introduced by switching between the initial state and the positioning trigger state:

referring to fig. 11 and 12, in the initial state: the pressurizing wheel 251 is located in the third rolling passage 273, when the pressurizing member 221 is in the full-depression position, the pressurizing valve is depressed by the pressurizing member 221, the spring of the pressurizing valve is compressed, the pressurizing valve seals the first vapor port, and when the sealing force generated by the pressurizing valve is maximum; the pressure relief valve 252 is located in the second rolling channel 272 at the right end of the first rolling channel 271, and the pressure relief member 222 is not depressed at this time, and the pressure relief valve seals the second steam port.

When switching from the initial state to the triggered positioning state: the controller controls the driving member 28 to drive the engaging member 23 to move to the right through the transmission member 29, when the pressure wheel 251 enters the first sub rolling passage from the third rolling passage 273, and the pressure member 221 moves upward in the second direction relative to the bracket 21 under the action of the sub inclined surface located below, when the pressure wheel 251 enters the second rolling passage 272 at the left end from the first sub rolling passage, the pressure member 221 completely releases the pressure valve, and the spring of the pressure valve is in a completely reset state; at this time, the pressure relief wheel 252 starts to enter the second rolling sub-channel from the second rolling sub-channel 272 at the right end, and under the action of the inclined sub-surface at the upper side, the pressure relief piece 222 moves downward relative to the bracket 21 in the second direction, when the pressure relief wheel 252 enters the third rolling sub-channel 273 from the second rolling sub-channel, the pressure relief valve is pressed down by the pressure relief piece 222, the second steam hole is opened for pressure relief, and at the same time, the switch assembly formed by the structure of the mating piece 23 and the trigger 210 is triggered to generate a trigger signal, and the controller receives the trigger signal and controls the driving piece 28 to stop rotating.

Referring to fig. 13 and 14, when the positioning state is triggered: the pressure relief wheel 252 is located in the third rolling channel 273, at this time, the pressure relief piece 222 is located at a fully-pressed position, the pressure relief valve is pressed down, a spring of the pressure relief valve is compressed, and at this time, the pressure relief valve fully opens the second steam port for pressure relief; the pressurizing wheel 251 is located in the second rolling passage 272 at the left end of the first rolling passage 271, and at this time the pressurizing valve is not depressed, the pressurizing valve opens the first steam port.

The embodiment of the utility model provides a pressure regulating mechanism 20, lid 100 and pressure cooking utensil have following beneficial effect:

1. the fitting piece 23 is in rolling friction fit with the pressure regulating piece 22, so that the friction force between the fitting piece 23 and the pressure regulating piece 22 is reduced, and the sensitivity is high, so that the pressure regulating precision of the pressure regulating mechanism 20 is high;

2. the fitting member 23 has a first rolling channel 271, and when the pressure wheel 251 and/or the pressure relief wheel 252 move in the first rolling channel 271, the pressure member 221 and/or the pressure relief member 222 can reciprocate along the second direction under the action of the upper inclined surface and the lower inclined surface which form the first rolling channel 271, so that a resetting member is omitted, and the structure is simple;

3. the pressure regulating mechanism 20 is provided with the trigger piece 210, the trigger piece 210 and the fitting piece 23 are constructed to form a switch assembly, when the switch assembly is triggered, a trigger signal is generated, the controller controls the stepping motor to stop rotating, so that the controller can control the forward and reverse rotation of the stepping motor to control the movement position of the fitting piece 23 relative to the bracket 21 along the first direction, and the positioning accuracy of the pressure regulating mechanism is ensured.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (11)

1. A pressure regulating mechanism, comprising:

a bracket (21);

a fitting member (23) which is reciprocatingly movable in a linear direction in relation to the holder (21);

the pressure regulating part (22) is arranged between the matching part (23) and the pressure regulating valve, and the pressure regulating part (22) can move along a second direction which is intersected with the first direction relative to the bracket (21) under the action of the matching part (23) and is linked with the pressure regulating valve to move along the second direction;

a trigger member (210) configured with the engagement member (23) to form a switch assembly.

2. The pressure regulating mechanism according to claim 1, wherein one of the trigger member (210) and the engaging member (23) is a sensing member, and the other is a sensed member, and when the engaging member (23) moves relative to the trigger member (210) to reach a preset condition, the sensing member and the sensed member generate a trigger signal.

3. The voltage regulating mechanism according to claim 2, wherein one of the sensing member and the sensed member is a photoelectric switch, and the other one is a blocking piece (234), and when the blocking piece (234) moves to block the light of the photoelectric switch, the sensing member and the sensed member generate the trigger signal.

4. The pressure regulating mechanism according to claim 1, wherein one of the trigger member (210) and the mating member (23) is a contact member and the other is a contacted member, and when the mating member (23) is contacted with respect to the trigger member (210), the contact member and the contacted member generate a trigger signal.

5. The pressure regulating mechanism according to claim 4, wherein one of the contact member and the contacted member is a microswitch, and the other is a pressing portion (235), and the pressing portion (235) presses the microswitch to generate the trigger signal when the mating member (23) is in contact with the trigger member (210).

6. Pressure regulating mechanism according to claim 1, characterized in that there is a rolling friction fit between the engaging element (23) and the pressure regulating member (22).

7. The pressure regulating mechanism according to claim 1, wherein the pressure regulating mechanism (20) further comprises a driving member (28), and the driving member (28) is connected with the fitting member (23) for driving the fitting member (23) to perform reciprocating linear motion along the first direction.

8. The pressure regulating mechanism according to claim 7, wherein the pressure regulating mechanism (20) further comprises a transmission member (29), the transmission member (29) is drivingly connected between the driving member (28) and the mating member (23);

the transmission piece (29) comprises a first engaging piece (291) and a second engaging piece (292) which are engaged with each other, the first engaging piece (291) is connected with the driving end of the driving piece (28), and the second engaging piece (292) is connected with the matching piece (23).

9. A cover, characterized by comprising a body (10), a pressure regulating valve and a pressure regulating mechanism according to any one of claims 1 to 8, wherein the pressure regulating mechanism (20) and the pressure regulating valve are both mounted in the body (10), and a pressure regulating member (22) of the pressure regulating mechanism (20) cooperates with the pressure regulating valve to regulate pressure.

10. A pressure cooking appliance comprising a cooking body and a lid according to claim 9, wherein the lid (100) is openably and closably attached to the cooking body, and the pressure regulating mechanism (20) cooperates with the pressure regulating valve to regulate the pressure in the cooking body.

11. Pressure cooking appliance according to claim 10, characterised in that it further comprises a controller, the switch assembly being electrically connected to the controller, the controller controlling the position of movement of the engagement element (23) relative to the support (21) in the first direction as a function of a trigger signal emitted by the switch assembly.

Images