CN211673753U - Pressure regulating device and cooking utensil - Google Patents

Abstract

The application discloses pressure adjustment device and cooking utensil. The pressure regulating device comprises a motor, a pressure regulating component, a detection component and a control circuit; the pressure regulating assembly is used for plugging a preset exhaust hole when the motor rotates along a first direction, and opening the exhaust hole when the motor rotates along a second direction opposite to the first direction, so that pressure maintaining and releasing are carried out on the cooking appliance; the detection assembly comprises a trigger key and a trigger mechanism, wherein the trigger mechanism is used for triggering the trigger key after the pressure regulating assembly blocks the vent hole and after the pressure regulating assembly opens the vent hole so as to generate a trigger signal; the control circuit is used for responding to the trigger signal to control the motor to stop rotating. The motor among the pressure regulating device of this application is not fragile and the life-span is relatively longer.

Description

Pressure regulating device and cooking utensil

Technical Field

The application relates to the technical field of household appliances, in particular to a pressure adjusting device and a cooking appliance.

Background

With the improvement of living standard of people, more and more cooking utensil products use pressure adjusting devices. However, the core components and motors in the pressure regulating device generally have short service life, and the motors are easy to damage due to no good control mode.

SUMMERY OF THE UTILITY MODEL

The main purpose of this application is to provide a pressure regulating device and cooking utensil, the motor is not fragile, prolongs the life-span of motor among the pressure regulating device.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: the pressure regulating device comprises a motor, a pressure regulating assembly, a detection assembly and a control circuit;

the pressure regulating assembly is used for plugging a preset exhaust hole when the motor rotates along a first direction, and opening the exhaust hole when the motor rotates along a second direction opposite to the first direction, so that pressure maintaining and releasing are carried out on the cooking appliance;

the detection assembly comprises a trigger key and a trigger mechanism, wherein the trigger mechanism is used for triggering the trigger key after the pressure regulating assembly blocks the vent hole and after the pressure regulating assembly opens the vent hole so as to generate a trigger signal;

the control circuit is used for responding to the trigger signal to control the motor to stop rotating.

The trigger mechanism is linked with the motor, and then triggers the trigger key after the motor rotates for a preset angle along the first direction and the second direction respectively.

The trigger mechanism comprises a cam and a trigger piece, the cam rotates synchronously with the motor, and then the motor rotates for a preset angle in the first direction and the second direction to drive the trigger piece to trigger the trigger key.

Wherein, be provided with an arc concave surface on the outer peripheral face of cam, at the motor along first direction and second direction rotation in-process, arc concave surface and trigger piece butt, and then drive trigger piece and trigger the key.

Wherein, be provided with the gyro wheel on the trigger piece, at the motor along first direction and second direction rotation in-process, gyro wheel and arc concave surface butt to move along the arc concave surface, and then drive trigger piece and trigger the key.

Wherein, the trigger piece is the flexure strip, and the one end and the trigger key of trigger piece are relatively fixed, and the other end of trigger piece is used for with arc concave surface butt to produce elastic deformation at the butt in-process, and then form the butt with the trigger key.

The motor is provided with a middle position, when the cooking appliance is in a non-working state, the control circuit controls the motor to rotate to the middle position, and when the motor is in the middle position, the trigger piece is opposite to the bottom of the arc-shaped concave surface and arranged at intervals, so that the trigger piece is in a natural state.

Wherein, pressure regulating device further includes the support, and the motor is fixed in on the support, and the pressure regulating subassembly is including rotating the swing arm that supports on the support, set up the first gear on the output shaft of motor and set up in the second gear of the one end of swing arm, and first gear and second gear mesh each other, and then rotate the in-process at the motor along first direction and second direction and drive the swing arm and rotate around predetermined axis of rotation.

Wherein the cam is coaxially fixed with the swing arm along the rotating shaft.

The pressure regulating assembly further comprises a pressure regulating rod hinged to the other end of the swing arm, the support is further arranged on the positioning hole, and the pressure regulating rod is inserted into the positioning hole so as to be positioned in the axial direction of the pressure regulating rod through the positioning hole.

In order to achieve the purpose, the other technical scheme adopted by the application is as follows: a cooking appliance is provided, which comprises the pressure regulating device.

Compared with the prior art, the beneficial effects of this application are: when the motor rotates along a first direction, the pressure regulating assembly blocks a preset exhaust hole to maintain pressure of the cooking utensil, and after the pressure regulating assembly blocks the preset exhaust hole, a trigger mechanism in the detection assembly can trigger a trigger key to generate a trigger signal, and the control circuit can respond to the trigger signal to control the motor to stop rotating; in addition, when the motor rotates along a second direction opposite to the first direction, the pressure regulating assembly opens the exhaust hole to release pressure for the cooking utensil, and after the pressure regulating assembly opens the exhaust hole, the trigger mechanism can trigger the trigger key to generate a trigger signal, and the control circuit can respond to the trigger signal to control the motor to stop rotating, so that the motor in the pressure regulating device can stop rotating when rotating to a certain degree along the first direction and the second direction, the motor cannot idle, the motor is not easy to damage, and the service life of the motor can be prolonged.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of a pressure regulating device of the present application;

FIG. 2 is an exploded view of an embodiment of the pressure regulating device of the present application;

FIG. 3 is a schematic structural diagram of an embodiment of the pressure regulating device of the present application;

FIG. 4 is a schematic partial view of another embodiment of a pressure regulating device of the present application;

FIG. 5 is a schematic structural view of yet another embodiment of a pressure regulating device of the present application;

FIG. 6 is a schematic structural view of yet another embodiment of a pressure regulating device of the present application;

FIG. 7 is a schematic structural view of another embodiment of a pressure regulating device of the present application;

FIG. 8 is a schematic view of a cooking device according to an embodiment of the present disclosure;

fig. 9 is a schematic cross-sectional view of an embodiment of a cooking device of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that if directional indications (such as up, down, left, right, front, and back … …) are referred to in the embodiments of the present application, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

Referring to fig. 1, fig. 2 and fig. 3, fig. 1 is a schematic perspective view of an embodiment of a pressure regulating device 100 according to the present application. Fig. 2 is an exploded view of an embodiment of the pressure regulating device 100 of the present application. Fig. 3 is a schematic structural diagram of an embodiment of the pressure regulating device 100 of the present application. As shown in fig. 1, 2 and 3, the pressure adjusting apparatus 100 includes a motor 110, a bracket 140, a pressure adjusting assembly 120, a detecting assembly 130 and a control circuit.

The motor 110, the voltage regulating assembly 120, and the sensing assembly 130 may be disposed on the bracket 140.

The pressure regulating assembly 120 is used to block a predetermined vent hole when the motor 110 rotates in a first direction, and to open the vent hole when the motor 110 rotates in a second direction opposite to the first direction, thereby maintaining and releasing pressure of the cooking appliance.

In this embodiment, the pressure regulating assembly 120 may include a swing arm 121 rotatably supported on the bracket 140. One end of the swing arm 121 may be connected to an output shaft of the motor 110, so that the motor 110 may drive the swing arm 121 to rotate around a predetermined rotation axis. Specifically, one end of the swing arm 121 may be provided with a second gear 123, an output shaft of the motor 110 may be provided with a first gear 122, and the first gear 122 and the second gear 123 are engaged with each other, so as to drive the swing arm 121 to rotate around a preset rotation axis during the rotation of the motor 110 in the first direction and the second direction. It is understood that one end of the swing arm 121 may be connected to the output shaft of the motor 110 by other means.

The swing arm 121 may also be connected to a pressure adjustment lever 124. In this embodiment, the pressure adjusting lever 124 may be connected to the other end of the swing arm 121, and a predetermined rotation shaft is provided at the middle of the swing arm 121, that is, the middle of the swing arm 121 is fixed to the bracket 140. Alternatively, the middle portion of the swing arm 121 may be fixed to the bracket 140 by a gland 125. In other embodiments, a predetermined rotation shaft may be disposed at the other end of the swing arm 121, and the pressure adjusting lever 124 is connected to the middle portion of the swing arm 121.

In one implementation, the pressure-adjusting lever 124 may be connected with the swing arm 121 by a hinge.

In another implementation manner, a connecting portion 126 may be disposed at a connection portion of the swing arm 121 and the pressure regulating rod 124, a sliding groove is disposed on the connecting portion 126, and one end of the pressure regulating rod 124 close to the swing arm 121 is located in the sliding groove and can slide in the sliding groove, so that the pressure regulating rod 124 is connected with the swing arm 121 through the connecting portion 126, and the rotating motion of the swing arm 121 can be converted into the linear motion of the pressure regulating rod 124 in the axial direction through the arrangement of the sliding groove in the connecting portion 126.

Further, to limit the moving direction of the pressure adjusting rod 124, the bracket 140 may be provided with a positioning hole 141, and the pressure adjusting rod 124 is inserted into the positioning hole 141 to position the axial direction of the pressure adjusting rod 124 through the positioning hole 141, so that the motor 110 drives the swing arm 121 to rotate around a preset rotation axis to drive the pressure adjusting rod 124 to move along the axial direction of the pressure adjusting rod 124. So that the pressure adjusting rod 124 can block the exhaust hole or can open the exhaust hole when the pressure adjusting rod 124 moves in the axial direction, and thus the pressure of the cooking appliance can be maintained and released through the pressure adjusting assembly 120. It is understood that the exhaust hole may be provided at a side of the pressure adjusting lever 124 away from the swing arm 121.

Wherein the motor 110 is provided with a middle position, wherein when the cooking appliance is in a non-working state, the control circuit controls the motor 110 to rotate to the middle position.

Specifically, after the motor 110 rotates to a certain degree along the first direction from the middle position, the pressure adjusting rod 124 can be driven by the first gear 122, the second gear 123, the swing arm 121 and other structures to press and block the predetermined exhaust hole, so as to maintain the pressure of the cooking appliance. After the motor 110 rotates to a certain degree from the middle position along the second direction, the pressure adjusting rod 124 is driven to lift up by the first gear 122, the second gear 123, the swing arm 121 and other structures to open the preset exhaust hole, so as to release the pressure of the cooking appliance.

To facilitate control of the motor 110, the pressure detection apparatus of the present application includes a detection assembly 130 and a control circuit. The detecting component 130 is used for generating a trigger signal according to the rotation condition of the motor 110. The control circuit is used for controlling the motor 110 to stop rotating in response to the trigger signal.

In this embodiment, the detecting component 130 includes a triggering key 131 and a triggering mechanism, wherein the triggering mechanism is used for triggering the triggering key 131 after the pressure regulating component blocks the vent hole and after the pressure regulating component opens the vent hole to generate a triggering signal.

In this embodiment, the detecting component 130 may further include a detector 132, wherein the triggering key 131 may be a starting switch disposed on the detector 132, and the triggering key 131 is triggered to enable the detector 132 to generate a triggering signal. Wherein, the triggering key 131 being triggered may refer to: the trigger key 131 is pressed or released to a predetermined position. When the trigger key is triggered, the circuitry within detector 132 switches from an off state to an on state, and detector 132 may generate and send a trigger signal to the control circuitry. Preferably, the detector 132 may be a micro switch.

In other embodiments, it can be determined whether the triggering key 131 is triggered by other means, for example, the triggering key 131 is connected to a pressure sensor, the pressure sensor is connected to a comparator, and the comparator is used for sending a triggering signal to the control circuit when the pressure value transmitted by the pressure sensor is equal to a preset value. That is, when the force applied to the pressure sensor by the triggering key 131 is equal to the preset value, the triggering key 131 is triggered.

In this embodiment, the triggering mechanism may be linked with the motor 110, and further trigger the triggering key 131 after the motor 110 rotates in the first direction and the second direction by a predetermined angle, respectively, so that the motor 110 stops rotating after the motor 110 rotates in the first direction and the second direction by the predetermined angle, and the motor 110 does not idle.

The trigger mechanism may include a cam 133. The cam 133 is rotated in synchronization with the motor 110, and thus triggers the trigger key 131 after the motor 110 is rotated in the first and second directions by a predetermined angle. It is understood that the phrase "the cam 133 rotates synchronously with the motor 110" as used herein means that the cam 133 rotates when the motor 110 rotates, and the cam 133 also stops rotating when the motor 110 stops rotating. The rotation speeds of the cam 133 and the motor 110 may be the same or different, and the rotation directions of the cam 133 and the motor 110 may be the same or different. As shown in fig. 4, the cam 133 may be directly provided on the output shaft of the motor 110. The cam 133 may alternatively be drivingly connected to the output shaft of the motor 110. For example, the cam 133 may be fixed coaxially with the swing arm 121 along the rotational axis. For another example, the cam 133 may be provided coaxially with the second gear 123.

In one implementation, as shown in fig. 5 and 6, the cam 133 may directly abut against or separate from the trigger key 131, so that the cam 133 triggers the trigger key 131 after the motor 110 rotates in the first direction and the second direction by a predetermined angle, that is, the cam 133 may cause the trigger key 131 to be pressed or released to a specified position, and the detector 132 generates a trigger signal for the control circuit to control the motor 110 to stop rotating. It can be understood that, in this implementation manner, as shown in fig. 5, in order that the cam 133 can trigger the trigger key 131 after the motor 110 rotates in the first direction and the second direction by a predetermined angle, the cam 133 may have a convex surface 1334, when the motor 110 is in the middle position, the high end 1333 of the cam 133 abuts against the trigger key 131, the trigger key 131 is pressed, and the trigger key 131 does not reach the trigger condition; when the motor 110 rotates in the first direction or the second direction, the cam 133 can be driven to rotate to a state where the lower end 1332 of the convex surface 1334 is opposite to the trigger key 131, and the trigger key 131 is released to a predetermined position, so that the trigger key 131 is triggered to generate a trigger signal for the control circuit to control the motor 110 to stop rotating. The convex surface 1334 may be an arc-shaped convex surface 1334, or may be a convex surface 1334 with other shapes, as long as the convex surface 1334 has a high end 1333 and two low ends 1332 capable of triggering the trigger key 131. Of course, in other implementations, as shown in fig. 6, in order that the cam 133 can trigger the trigger key 131 after the motor 110 rotates in the first direction and the second direction by a predetermined angle, the cam 133 may be provided with a concave surface 1331, when the motor 110 is in the middle position, the lower end 1332 of the concave surface 1331 in the cam 133 is opposite to the trigger key 131, the trigger key 131 is released, and the trigger key 131 does not reach the trigger condition; when the motor 110 rotates in the first direction or the second direction, the cam 133 can be driven to rotate to a state where the high end 1333 of the concave 1331 abuts against the trigger key 131, and the trigger key 131 is pressed to a predetermined position, so that the trigger key 131 is triggered to generate a trigger signal for the control circuit to control the motor 110 to stop rotating. The concave surface 1331 may be an arc-shaped concave surface 1331, or may be a concave surface 1331 with other shapes, as long as the concave surface 1331 has a lower end 1332 and two upper ends 1333 capable of triggering the triggering key 131. It is understood that "high end 1333" as used herein refers to the end of the convex surface 1334 or the concave surface 1331 that is farther from the axis of the cam 133, and "low end 1332" refers to the end of the convex surface 1334 or the concave surface 1331 that is closer to the axis of the cam 133, i.e., the high end 1333 is farther from the axis of the cam 133 than the low end 1332 is.

In another implementation, as shown in fig. 3 and 7, the triggering mechanism may further include a triggering member 134, and the cam 133 rotates synchronously with the motor 110, so as to drive the triggering member 134 to trigger the triggering key 131 after the motor 110 rotates in the first direction and the second direction by a predetermined angle.

It is understood that, in order that the cam 133 can trigger the trigger key 131 after the motor 110 rotates in the first direction and the second direction by a predetermined angle, as shown in fig. 3, a concave surface 1331 may be provided on the outer circumferential surface of the cam 133, and the concave surface 1331 may be an arc-shaped concave surface 1331, or may be a concave surface 1331 with other shapes. When the motor 110 is in the middle position, the lower end 1332 of the arc-shaped concave surface 1331 can drive the trigger piece 134 to release the trigger key 131, and the trigger key 131 does not reach the trigger condition; when the motor 110 rotates in the first direction or the second direction, the cam 133 can be driven to rotate until the high end 1333 of the concave surface 1331 drives the trigger 134 to press the trigger key 131 to a predetermined position, so that the trigger key 131 is triggered to generate a trigger signal for the control circuit to control the motor 110 to stop rotating. It is understood that in other implementations, as shown in fig. 7, in order that the cam 133 can trigger the trigger key 131 after the motor 110 rotates in the first direction and the second direction by a predetermined angle, a convex surface 1334 may be provided on the cam 133, and the convex surface 1334 may be an arc-shaped convex surface 1334, or a convex surface 1334 with other shapes.

In addition, referring to fig. 3, in order to facilitate the cam 133 driving the trigger 134 to trigger the trigger key 131, an abutting part 135 may be disposed on an end of the trigger 134 close to the cam 133. During the rotation of the motor 110 in the first direction and the second direction, the abutting part 135 abuts against the arc-shaped concave surface 1331 and moves along the arc-shaped concave surface 1331, so as to drive the trigger 134 to trigger the trigger key 131. In order to trigger the trigger key 131 through the trigger 134 conveniently, one end of the trigger 134 is fixed relative to the trigger key 131, the other end of the trigger 134 is provided with an abutting part 135, in the process that the abutting part 135 moves along the arc-shaped concave surface 1331, the other end of the trigger 134 moves relative to the trigger key 131, so that the middle part of the trigger 134 is abutted against the trigger key 131, the trigger key 131 can be triggered when the trigger key 131 is pressed to a certain degree in the middle part of the trigger 134, and a trigger signal for stopping the rotation of the control circuit control motor 110 is generated.

Wherein, when the motor 110 is in the middle position, the abutting member 135 is opposite to and spaced from the bottom of the arc-shaped concave surface 1331, so that the trigger 134 is in a natural state.

To enable the abutment 135 on the trigger 134 to move along the curved concave surface 1331, the trigger 134 may be an elastic piece. Therefore, when the arc-shaped groove applies pressure to the other end of the trigger piece 134, the trigger piece 134 can be elastically deformed, the middle part of the trigger piece 134 presses the trigger key 131, and when the arc-shaped groove does not apply pressure to the other end of the trigger piece 134, the trigger piece 134 slowly recovers, and the trigger key 131 can slowly rebound. Of course, in other embodiments, one end of the trigger 134 is fixed to the detector 132 by a hinge, and an elastic member may be disposed between the trigger 134 and the detector 132 to facilitate the elastic member to recover slowly when the arc-shaped groove does not apply pressure to the other end of the trigger 134.

In addition, the abutment 135 may be a roller. Also, the radius of curvature of the roller may be smaller than that of the curved concave surface 1331, so that the roller may form a line contact with the curved concave surface 1331, and the radian and size of the curved concave surface 1331 may be conveniently controlled.

The pressure adjustment device 100 can be applied to a cooking appliance 200, and thus the present application also provides a cooking appliance 200. As shown in fig. 8, the cooking appliance 200 includes the pressure adjustment device 100, and therefore, the cooking appliance 200 provided by the embodiment of the present application can have all the advantages of the pressure adjustment device 100, which are not listed here.

The cooking appliance 200 may be an electric rice cooker or an electric pressure cooker.

Referring to fig. 9, the cooking appliance 200 may include a pot body 210 and a cover 220. The cover 220 is connected to the pot 210 and forms a cooking cavity 230 in cooperation with the pot 210. The cover 220 may have an exhaust hole. The vent may communicate the cooking cavity 230 with the external environment. The pressure adjusting device 100 may be disposed on the cover 220, and the pressure adjusting assembly 120 of the pressure adjusting device 100 may close or open the exhaust hole under the driving of the motor 110.

Optionally, when the pressure regulating assembly 120 includes the swing arm 121 and the pressure regulating rod 124, one end of the pressure regulating rod 124, which is far away from the swing arm 121, blocks the vent hole when the motor 110 rotates along the first direction, so that the gas in the cooking cavity 230 cannot be released from the vent hole to the external environment, thereby maintaining the pressure of the cooking appliance 200. One end of the pressure adjusting rod 124, which is far away from the swing arm 121, opens the vent hole when the motor 110 rotates in the second direction, and the gas in the cooking cavity 230 can be released to the external environment through the vent hole, so that the pressure of the cooking appliance 200 can be released.

In other implementations, the pressure adjustment device 100 may also be disposed on the pan body 210 of the cooking appliance 200.

In summary, when the motor 110 rotates along the first direction, the pressure regulating assembly 120 blocks the predetermined vent hole to maintain pressure of the cooking appliance, and after the pressure regulating assembly 120 blocks the predetermined vent hole, the trigger mechanism in the detection assembly 130 can trigger the trigger key 131 to generate a trigger signal, and the control circuit will respond to the trigger signal to control the motor 110 to stop rotating; in addition, when the motor 110 rotates along a second direction opposite to the first direction, the pressure regulating assembly 120 opens the vent hole to release pressure to the cooking utensil, and after the vent hole is opened by the pressure regulating assembly 120, the trigger mechanism can trigger the trigger key 131 to generate a trigger signal, and the control circuit can respond to the trigger signal to control the motor 110 to stop rotating, so that the motor 110 in the pressure regulating device 100 of the present application can stop rotating when the motor 110 rotates to a certain degree along the first direction and the second direction, the motor 110 cannot idle, the motor 110 is not easy to damage, and the service life of the motor 110 can be prolonged.

The above embodiments are merely examples and are not intended to limit the scope of the present disclosure, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present disclosure or those directly or indirectly applied to other related technical fields are intended to be included in the scope of the present disclosure.

Claims (11)

1. A pressure regulating device for a cooking appliance, the pressure regulating device comprising:

a motor;

the pressure regulating assembly is used for plugging a preset exhaust hole when the motor rotates along a first direction, and opening the exhaust hole when the motor rotates along a second direction opposite to the first direction, so that pressure maintaining and pressure releasing are carried out on the cooking utensil;

the detection assembly comprises a trigger key and a trigger mechanism, wherein the trigger mechanism is used for triggering the trigger key after the pressure regulating assembly blocks the exhaust hole and after the pressure regulating assembly opens the exhaust hole so as to generate a trigger signal;

and the control circuit is used for responding to the trigger signal to control the motor to stop rotating.

2. The pressure regulating device of claim 1, wherein the triggering mechanism is linked to the motor to trigger the triggering key after the motor rotates in the first direction and the second direction by a predetermined angle, respectively.

3. The pressure regulating device of claim 2, wherein the triggering mechanism comprises a cam and a triggering member, the cam rotates synchronously with the motor, and the triggering member is driven to trigger the triggering key after the motor rotates in the first direction and the second direction by a predetermined angle.

4. The pressure regulating device of claim 3, wherein an arc-shaped concave surface is disposed on an outer peripheral surface of the cam, and the arc-shaped concave surface abuts against the trigger member during rotation of the motor in the first direction and the second direction, thereby driving the trigger member to trigger the trigger key.

5. The pressure regulating device of claim 4, wherein the triggering member is provided with a roller, and during the rotation of the motor in the first direction and the second direction, the roller abuts against the arc-shaped concave surface and moves along the arc-shaped concave surface, so as to drive the triggering member to trigger the triggering key.

6. The pressure regulating device of claim 4, wherein the trigger is an elastic sheet, one end of the trigger is fixed relative to the trigger key, and the other end of the trigger is used for abutting against the arc-shaped concave surface and being elastically deformed during the abutting process so as to abut against the trigger key.

7. The pressure regulating device of claim 4, wherein the motor is provided with a neutral position, wherein when the cooking utensil is in a non-operating state, the control circuit controls the motor to rotate to the neutral position, and when the motor is in the neutral position, the trigger member is opposite to and spaced from the bottom of the arc-shaped concave surface, so that the trigger member is in a natural state.

8. The pressure regulating device of claim 3, further comprising a bracket, wherein the motor is fixed to the bracket, the pressure regulating assembly comprises a swing arm rotatably supported on the bracket, a first gear disposed on the output shaft of the motor, and a second gear disposed at one end of the swing arm, wherein the first gear and the second gear are engaged with each other, and the swing arm is driven to rotate around a preset rotation axis during the rotation of the motor in the first direction and the second direction.

9. The pressure regulating device of claim 8, wherein the cam is fixed coaxially with the swing arm along the rotational axis.

10. The pressure regulating device of claim 8, wherein the pressure regulating assembly further comprises a pressure regulating rod hinged to the other end of the swing arm, the bracket is further provided with a positioning hole, and the pressure regulating rod is inserted into the positioning hole so as to position the axial direction of the pressure regulating rod through the positioning hole.

11. A cooking appliance, characterized in that it comprises:

the pan body is provided with a pan body,

the cover body is connected with the pot body and is used for being matched with the pot body to form a cooking cavity, and the cover body is provided with an exhaust hole;

wherein, the cover body is provided with a pressure regulating device according to any one of claims 1 to 10 for blocking or opening the vent hole to perform pressure maintaining or releasing on the pressure in the cooking cavity.

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