Pressure regulating device and cooking appliance

Abstract

The present application discloses a pressure regulating device and a cooking utensil. The pressure regulating device includes a motor, a pressure regulating component, a detection component and a control circuit; the pressure regulating component is used to block a predetermined exhaust hole when the motor rotates in a first direction, and to open the exhaust hole when the motor rotates in a second direction opposite to the first direction, thereby maintaining and releasing pressure on the cooking utensil; the detection component includes a trigger key and a trigger mechanism, wherein the trigger mechanism is used to trigger the trigger key after the pressure regulating component blocks the exhaust hole and after the pressure regulating component opens the exhaust hole, so as to generate a trigger signal; the control circuit is used to control the motor to stop rotating in response to the trigger signal. The motor in the pressure regulating device of the present application is not easy to be damaged and has a relatively long life.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular to a pressure regulating device and a cooking appliance. Background Art

[0002] As people's living standards improve, more and more cooking appliances use pressure regulators. However, the life of the core component motor in the pressure regulator is generally not long, and the motor has no good control method and is easily damaged. Summary of the invention

[0003] The main purpose of the present application is to provide a pressure regulating device and a cooking utensil, wherein the motor is not easily damaged, thereby extending the life of the motor in the pressure regulating device.

[0004] In order to achieve the above-mentioned purpose, a technical solution adopted in the present application is: to provide a pressure regulating device, the pressure regulating device comprising a motor, a pressure regulating component, a detection component and a control circuit;

[0005] The pressure regulating assembly is used to block the predetermined exhaust hole when the motor rotates in a first direction, and to open the exhaust hole when the motor rotates in a second direction opposite to the first direction, thereby maintaining and releasing the pressure of the cooking appliance;

[0006] The detection component includes a trigger key and a trigger mechanism, wherein the trigger mechanism is used to trigger the trigger key after the pressure regulating component blocks the exhaust hole and after the pressure regulating component opens the exhaust hole to generate a trigger signal;

[0007] The control circuit is used for controlling the motor to stop rotating in response to the trigger signal.

[0008] The trigger mechanism is linked with the motor, and the trigger key is triggered after the motor rotates by a predetermined angle in the first direction and the second direction respectively.

[0009] The trigger mechanism includes a cam and a trigger member. The cam rotates synchronously with the motor, and then drives the trigger member to trigger the trigger key after the motor rotates by a predetermined angle in the first direction and the second direction.

[0010] Among them, an arc-shaped concave surface is arranged on the outer peripheral surface of the cam. When the motor rotates along the first direction and the second direction, the arc-shaped concave surface abuts against the trigger member, thereby driving the trigger member to trigger the trigger key.

[0011] Wherein, a roller is arranged on the trigger member, and when the motor rotates along the first direction and the second direction, the roller abuts against the arc-shaped concave surface and moves along the arc-shaped concave surface, thereby driving the trigger member to trigger the trigger key.

[0012] The trigger member is an elastic sheet, one end of which is relatively fixed to the trigger key, and the other end of which is used to abut against the arc-shaped concave surface, and generates elastic deformation during the abutment process, thereby abutting against the trigger key.

[0013] The motor is provided with an intermediate position, wherein when the cooking appliance is in a non-working state, the control circuit controls the motor to rotate to the intermediate position, and when the motor is in the intermediate 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.

[0014] Among them, the pressure regulating device further includes a bracket, the motor is fixed on the bracket, the pressure regulating assembly includes a swing arm rotatably supported on the bracket, a first gear arranged on the output shaft of the motor, and a second gear arranged at one end of the swing arm, the first gear and the second gear are meshed with each other, and then the swing arm is driven to rotate around a preset rotation axis during the rotation of the motor along the first direction and the second direction.

[0015] The cam is fixed coaxially with the swing arm along the rotation axis.

[0016] The voltage regulating assembly further includes a voltage regulating rod hinged to the other end of the swing arm, and a positioning hole is further provided on the bracket, and the voltage regulating rod is inserted into the positioning hole so that the voltage regulating rod is positioned axially by the positioning hole.

[0017] In order to achieve the above-mentioned purpose, another technical solution adopted by the present application is: to provide a cooking utensil, which includes the above-mentioned pressure regulating device.

[0018] Compared with the prior art, the beneficial effects of the present application are as follows: when the motor rotates in a first direction, the pressure regulating component blocks the predetermined exhaust hole to maintain the pressure of the cooking utensil, and after the pressure regulating component blocks the predetermined exhaust hole, the trigger mechanism in the detection component can trigger the trigger key to generate a trigger signal, and the control circuit will control the motor to stop rotating in response to the trigger signal; in addition, when the motor rotates in a second direction opposite to the first direction, the pressure regulating component opens the exhaust hole to release the pressure of the cooking utensil, and after the pressure regulating component opens the exhaust hole, the trigger mechanism can trigger the trigger key to generate a trigger signal, and the control circuit will control the motor to stop rotating in response to the trigger signal, so that the motor in the pressure regulating device of the present application will stop rotating when it rotates to a certain extent in the first direction and the second direction, the motor will not idle, the motor is not easily damaged, and the service life of the motor can be extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the pressure regulating device of the present application;

[0020] Figure 2 It is an exploded schematic diagram of an embodiment of the pressure regulating device of the present application;

[0021] Figure 3 It is a structural schematic diagram of an embodiment of the pressure regulating device of the present application;

[0022] Figure 4 It is a partial structural schematic diagram of another embodiment of the pressure regulating device of the present application;

[0023] Figure 5 It is a structural schematic diagram of another embodiment of the pressure regulating device of the present application;

[0024] Figure 6 It is a structural schematic diagram of another embodiment of the pressure regulating device of the present application;

[0025] Figure 7 It is a structural schematic diagram of another embodiment of the pressure regulating device of the present application;

[0026] Figure 8 is a structural schematic diagram of one perspective of an embodiment of a cooking device of the present application;

[0027] Fig. 9 It is a cross-sectional schematic diagram of an embodiment of the cooking device of the present application. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0031] See also Figure 1 , Figure 2 and Figure 3 , Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the pressure regulating device 100 of the present application. Figure 2 It is a schematic diagram of an exploded view of an embodiment of a pressure regulating device 100 of the present application. Figure 3 FIG. 1 is a schematic diagram of the structure of an embodiment of a pressure regulating device 100 of the present application. Figure 1 , Figure 2 and Figure 3 As shown, the pressure regulating device 100 includes a motor 110, a bracket 140, a pressure regulating component 120, a detection component 130 and a control circuit.

[0032] The motor 110 , the voltage regulating assembly 120 and the detecting assembly 130 may be disposed on a bracket 140 .

[0033] The pressure regulating assembly 120 is used to block the predetermined exhaust hole when the motor 110 rotates in a first direction, and to open the exhaust hole when the motor 110 rotates in a second direction opposite to the first direction, thereby maintaining and releasing the pressure of the cooking appliance.

[0034] In this embodiment, the voltage 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 the output shaft of the motor 110 so that the motor 110 can drive the swing arm 121 to rotate around a preset rotation axis. Specifically, a second gear 123 may be provided at one end of the swing arm 121, and a first gear 122 may be provided on the output shaft of the motor 110. The first gear 122 and the second gear 123 are meshed with each other, thereby driving the swing arm 121 to rotate around the preset rotation axis during the rotation of the motor 110 in the first direction and the second direction. It is understandable that one end of the swing arm 121 may also be connected to the output shaft of the motor 110 in other ways.

[0035] The swing arm 121 may also be connected to the pressure regulating rod 124. In this embodiment, the pressure regulating rod 124 may be connected to the other end of the swing arm 121, and a preset rotation axis is set in the middle of the swing arm 121, that is, the middle of the swing arm 121 is fixed to the bracket 140. Optionally, the middle of the swing arm 121 may be fixed to the bracket 140 by a pressure cover 125. In other embodiments, a preset rotation axis may also be set at the other end of the swing arm 121, and the pressure regulating rod 124 is connected to the middle of the swing arm 121.

[0036] In one implementation, the pressure regulating rod 124 may be connected to the swing arm 121 in a hinged manner.

[0037] In another implementation, a connecting portion 126 may be provided at the connection between the swing arm 121 and the pressure-regulating rod 124, and a sliding groove is provided on the connecting portion 126. The 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 to the swing arm 121 through the connecting portion 126. The setting of the sliding groove in the connecting portion 126 can convert the rotational motion of the swing arm 121 into linear motion of the pressure-regulating rod 124 in the axial direction.

[0038] Furthermore, in order to limit the moving direction of the pressure regulating rod 124, a positioning hole 141 may be provided on the bracket 140, and the pressure regulating rod 124 is inserted into the positioning hole 141, so that the positioning hole 141 can position the axial direction of the pressure regulating rod 124, so that when the motor 110 drives the swing arm 121 to rotate around the preset rotation axis, the pressure regulating rod 124 can be driven to move along the axial direction of the pressure regulating rod 124. Therefore, when the pressure regulating rod 124 moves along the axial direction, the pressure regulating rod 124 can block the exhaust hole or open the exhaust hole, so that the pressure regulating assembly 120 can maintain and release the pressure of the cooking utensil. It can be understood that the exhaust hole can be set on the side of the pressure regulating rod 124 away from the swing arm 121.

[0039] The motor 110 is provided with a middle position, and when the cooking appliance is in a non-working state, the control circuit controls the motor 110 to rotate to the middle position.

[0040] Specifically, after the motor 110 rotates a certain degree in the first direction from the middle position, the pressure regulating rod 124 can be driven to press down to block the predetermined exhaust hole through the first gear 122, the second gear 123, the swing arm 121 and other structures to maintain the pressure of the cooking utensil. After the motor 110 rotates a certain degree in the second direction from the middle position, the pressure regulating rod 124 can be driven to lift up to open the predetermined exhaust hole through the first gear 122, the second gear 123, the swing arm 121 and other structures to release the pressure of the cooking utensil.

[0041] To facilitate the control of the motor 110, the pressure detection device of the present application includes a detection component 130 and a control circuit. The detection component 130 is used to generate a trigger signal according to the rotation of the motor 110. The control circuit is used to control the motor 110 to stop rotating in response to the trigger signal.

[0042] In this embodiment, the detection component 130 includes a trigger key 131 and a trigger mechanism, wherein the trigger mechanism is used to trigger the trigger key 131 after the pressure regulating component blocks the exhaust hole and after the pressure regulating component opens the exhaust hole to generate a trigger signal.

[0043] In this embodiment, the detection component 130 may also include a detector 132, wherein the trigger key 131 may be a start switch provided on the detector 132, and the detector 132 may generate a trigger signal by triggering the trigger key 131. The trigger key 131 being triggered may refer to: the trigger key 131 being pressed or released to a predetermined position. When the trigger key is triggered, the circuit in the detector 132 switches from an open circuit state to a closed circuit state, and the detector 132 may generate a trigger signal and send it to the control circuit. Preferably, the detector 132 may be a micro switch.

[0044] In other embodiments, it is also possible to determine whether the trigger key 131 is triggered by other means, for example, the trigger key 131 is connected to a pressure sensor, the pressure sensor is connected to a comparator, and the comparator is used to send a trigger 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 by the trigger key 131 to the pressure sensor is equal to the preset value, the trigger key 131 is triggered.

[0045] In this embodiment, the trigger mechanism can be linked with the motor 110, and then the trigger key 131 is triggered after the motor 110 rotates a predetermined angle in the first direction and the second direction respectively, so that the motor 110 will stop rotating after the motor 110 rotates to the predetermined angle in the first direction and the second direction, so that the motor 110 will not idle.

[0046] The trigger mechanism may include a cam 133. The cam 133 rotates synchronously with the motor 110, and then triggers the trigger key 131 after the motor 110 rotates in the first direction and the second direction by a predetermined angle. It is understandable that the "cam 133 rotates synchronously with the motor 110" mentioned here means that the cam 133 rotates when the motor 110 rotates, and the cam 133 stops rotating when the motor 110 stops rotating. In addition, 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. Figure 4 As shown, the cam 133 can be directly disposed on the output shaft of the motor 110. Alternatively, the cam 133 can be in driving connection with the output shaft of the motor 110. For example, the cam 133 can be coaxially fixed with the swing arm 121 along the rotation axis. For another example, the cam 133 can be coaxially disposed with the second gear 123.

[0047] In one implementation, if Figure 5 and Figure 6As shown, the cam 133 can directly contact 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 can press or release the trigger key 131 to a specified position, so that 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, if Figure 5 As shown, after the motor 110 rotates by a predetermined angle in the first direction and the second direction, the cam 133 can trigger the trigger key 131. 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, pressing 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 to a state where the low 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 a convex surface 1334 of other shapes, as long as the convex surface 1334 has a high end 1333 and two low ends 1332 that can trigger the trigger key 131. Of course, in other implementations, such as Figure 6 As shown, 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 can 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. When the trigger key 131 is released, 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 abuts against the trigger key 131. 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 can be an arc-shaped concave surface 1331 or a concave surface 1331 of other shapes, as long as the concave surface 1331 has a lower end 1332 and two high ends 1333 that can trigger the trigger key 131. It can be understood that the "high end 1333" mentioned in the present application refers to the end on the convex surface 1334 or the concave surface 1331 that is farther away from the axis of the cam 133, and the "low end 1332" refers to the end on the convex surface 1334 or the concave surface 1331 that is closer to the axis of the cam 133, that is, the distance between the high end 1333 and the axis of the cam 133 is farther than the distance between the low end 1332 and the axis of the cam 133.

[0048] In another implementation, Figure 3 and Figure 7As shown, the trigger mechanism may further include a trigger member 134 , and the cam 133 rotates synchronously with the motor 110 , thereby driving the trigger member 134 to trigger the trigger key 131 after the motor 110 rotates by a predetermined angle along the first direction and the second direction.

[0049] It can be understood 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. Figure 3 As shown, a concave surface 1331 may be provided on the outer peripheral surface of the cam 133, and the concave surface 1331 may be an arc-shaped concave surface 1331 or a concave surface 1331 of other shapes. When the motor 110 is in the middle position, the lower end 1332 of the arc-shaped concave surface 1331 may drive the trigger member 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, it may drive the cam 133 to rotate until the high end 1333 of the concave surface 1331 drives the trigger member 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 can be understood that in other implementations, such as Figure 7 As shown, in order for the cam 133 to trigger the trigger key 131 after the motor 110 rotates a predetermined angle along the first direction and the second direction, 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 of other shapes.

[0050] Also, please continue to read Figure 3 In order to facilitate the cam 133 to drive the trigger member 134 to trigger the trigger key 131, an abutment member 135 may be provided on one end of the trigger member 134 close to the cam 133. When the motor 110 rotates in the first direction and the second direction, the abutment member 135 abuts against the arcuate concave surface 1331 and moves along the arcuate concave surface 1331, thereby driving the trigger member 134 to trigger the trigger key 131. In order to facilitate triggering the trigger key 131 through the trigger member 134, one end of the trigger member 134 is relatively fixed to the trigger key 131, and an abutment member 135 is provided on the other end of the trigger member 134. When the abutment member 135 moves along the arc-shaped concave surface 1331, the other end of the trigger member 134 moves relative to the trigger key 131, so that the middle part of the trigger member 134 forms an abutment with the trigger key 131. When the trigger key 131 is pressed to a certain extent in the middle part of the trigger member 134, the trigger key 131 can be triggered, thereby generating a trigger signal for the control circuit to control the motor 110 to stop rotating.

[0051] When the motor 110 is in the middle position, the abutment member 135 is opposite to the bottom of the arc-shaped concave surface 1331 and is spaced apart from each other, so that the trigger member 134 is in a natural state.

[0052] In order to enable the abutment member 135 on the trigger member 134 to move along the arc-shaped concave surface 1331, the trigger member 134 may be an elastic sheet. Thus, when the arc-shaped groove applies pressure to the other end of the trigger member 134, the trigger member 134 may be elastically deformed, and the middle part of the trigger member 134 presses the trigger key 131. When the arc-shaped groove does not apply pressure to the other end of the trigger member 134, the trigger member 134 slowly recovers, and the trigger key 131 slowly rebounds. Of course, in other embodiments, one end of the trigger member 134 is fixed to the detector 132 by a hinge, and an elastic member may be provided between the trigger member 134 and the detector 132, so that the elastic member slowly recovers when the arc-shaped groove does not apply pressure to the other end of the trigger member 134.

[0053] In addition, the abutment member 135 may be a roller. Moreover, the curvature radius of the roller may be smaller than the curvature radius of the arc-shaped concave surface 1331 , so that the roller can form a line contact with the arc-shaped concave surface 1331 , which facilitates controlling the curvature and size of the arc-shaped concave surface 1331 .

[0054] The pressure regulating device 100 can be applied to a cooking appliance 200, so the present application also provides a cooking appliance 200. Figure 8 As shown, the cooking utensil 200 includes the above-mentioned pressure regulating device 100. Therefore, the cooking utensil 200 provided in the embodiment of the present application can have all the beneficial effects of the above-mentioned pressure regulating device 100, which are not listed one by one here.

[0055] The cooking appliance 200 may be an electric rice cooker or an electric pressure cooker.

[0056] See also Fig. 9 The cooking device 200 may include a pot body 210 and a cover body 220. The cover body 220 is connected to the pot body 210 and cooperates with the pot body 210 to form a cooking cavity 230. An exhaust hole may be provided on the cover body 220. The exhaust hole may connect the cooking cavity 230 with the external environment. The pressure regulating device 100 may be disposed on the cover body 220, and the pressure regulating component 120 of the pressure regulating device 100 may block or open the exhaust hole under the drive of the motor 110.

[0057] Optionally, when the pressure regulating assembly 120 includes the swing arm 121 and the pressure regulating rod 124, the end of the pressure regulating rod 124 away from the swing arm 121 blocks the exhaust hole when the motor 110 rotates in the first direction, so that the gas in the cooking cavity 230 cannot be released from the exhaust hole to the outside environment, thereby maintaining the pressure of the cooking utensil 200. The end of the pressure regulating rod 124 away from the swing arm 121 opens the exhaust hole when the motor 110 rotates in the second direction, and the gas in the cooking cavity 230 can be released from the exhaust hole to the outside environment, thereby releasing the pressure of the cooking utensil 200.

[0058] In other implementations, the pressure regulating device 100 may also be disposed on the pot body 210 of the cooking appliance 200 .

[0059] To summarize, when the motor 110 rotates in a first direction, the pressure regulating component 120 blocks the predetermined exhaust hole to maintain the pressure of the cooking utensil, and after the pressure regulating component 120 blocks the predetermined exhaust hole, the trigger mechanism in the detection component 130 can trigger the trigger key 131 to generate a trigger signal, and the control circuit will control the motor 110 to stop rotating in response to the trigger signal; in addition, when the motor 110 rotates in a second direction opposite to the first direction, the pressure regulating component 120 opens the exhaust hole to release the pressure of the cooking utensil, and after the pressure regulating component 120 opens the exhaust hole, the trigger mechanism can trigger the trigger key 131 to generate a trigger signal, and the control circuit will control the motor 110 to stop rotating in response to the trigger signal, so that the motor 110 in the pressure regulating device 100 of the present application will stop rotating when it rotates to a certain extent in the first direction and the second direction, and the motor 110 will not idle, so that the motor 110 is not easily damaged and the service life of the motor 110 can be extended.

[0060] The above are only implementation methods of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A pressure regulating device, characterized in that: For a cooking appliance, the pressure regulating device comprises: Motor; a pressure regulating assembly, used to block a predetermined exhaust hole when the motor rotates in a first direction, and to open the exhaust hole when the motor rotates in a second direction opposite to the first direction, thereby maintaining and releasing pressure on the cooking appliance; A detection component, comprising a trigger key and a trigger mechanism, wherein the trigger mechanism is used to trigger the trigger key after the pressure regulating component blocks the exhaust hole and after the pressure regulating component opens the exhaust hole, so as to generate a trigger signal; A control circuit, used for controlling the motor to stop rotating in response to the trigger signal; Wherein, the trigger mechanism comprises a cam and a trigger member, the cam rotates synchronously with the motor, and a high end and a low end are arranged on the outer peripheral surface of the cam; the motor is provided with an intermediate position, when the motor is in the intermediate position, one of the low end and the high end drives the trigger member to release the trigger key, and the trigger key does not reach the trigger condition; when the motor rotates in the first direction or the second direction, the cam is driven to rotate until the other of the low end and the high end drives the trigger member to press the trigger key to a predetermined position, so that the trigger key is triggered, so as to generate a trigger signal for the control circuit to control the motor to stop rotating, so as to drive the trigger member to trigger the trigger key after the motor rotates in the first direction and the second direction by a predetermined angle; The distance between the high end and the axis of the cam is greater than the distance between the low end and the axis of the cam.

2. The pressure regulating device according to claim 1, characterized in that: An arcuate concave surface is arranged on the outer peripheral surface of the cam, and the high end and the low end are arranged on the arcuate concave surface. During the rotation of the motor along the first direction and the second direction, the arcuate concave surface abuts against the trigger member, thereby driving the trigger member to trigger the trigger key.

3. The pressure regulating device according to claim 2, characterized in that: A roller is provided on the trigger member. When the motor rotates along the first direction and the second direction, the roller abuts against the arcuate concave surface and moves along the arcuate concave surface, thereby driving the trigger member to trigger the trigger key.

4. The pressure regulating device according to claim 2, characterized in that: The trigger member is an elastic sheet, one end of which is relatively fixed to the trigger key, and the other end of which is used to abut against the arc-shaped concave surface and generates elastic deformation during the abutment process, thereby abutting against the trigger key.

5. The pressure regulating device according to claim 2, characterized in that: When the cooking appliance is in a non-working state, the control circuit controls the motor to rotate to the middle position. When the motor is in the middle 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.

6. The pressure regulating device according to claim 1, characterized in that: The pressure regulating device further includes a bracket, the motor is fixed on the bracket, and the pressure regulating assembly includes a swing arm rotatably supported on the bracket, a first gear arranged on the output shaft of the motor, and a second gear arranged at one end of the swing arm, the first gear and the second gear are engaged with each other, thereby driving the swing arm to rotate around a preset rotation axis during the rotation of the motor along the first direction and the second direction.

7. The pressure regulating device according to claim 6, characterized in that: The cam is fixed coaxially with the swing arm along the rotation axis.

8. The pressure regulating device according to claim 6, characterized in that: The pressure regulating assembly further includes a pressure regulating rod hinged to the other end of the swing arm. A positioning hole is further provided on the bracket, and the pressure regulating rod is inserted into the positioning hole so that the pressure regulating rod is positioned axially by the positioning hole.

9. A cooking utensil, characterized in that: The cooking appliance comprises: Pot body, A cover body connected to the pot body and used to cooperate with the pot body to form a cooking cavity, and an exhaust hole is opened on the cover body; Wherein, the cover body is provided with a pressure regulating device according to any one of claims 1 to 8, which is used to block or open the exhaust hole to maintain or release the pressure in the cooking cavity.

Images