CN221105516U - Pressure cooker cover and pressure cooker - Google Patents

Abstract

The application provides a pressure cooker cover and a pressure cooker, wherein the pressure cooker cover comprises a cover body and a clamping device which are detachably connected, and the clamping device comprises a supporting piece, at least two clamps, a transmission piece and a driving piece; the support piece is used for connecting the cover body; the clamp is connected to the supporting piece in a sliding way and can slide along the radial direction of the cover body, and the clamp is provided with a first transmission part; the transmission piece is rotatably connected to the supporting piece and is provided with a second transmission part, and the second transmission part is matched with the first transmission part; the driving piece and the transmission piece are coaxially arranged, the driving piece comprises a first end part and a second end part which are oppositely arranged, the first end part is fixedly connected with the transmission piece, and the second end part is provided with a holding part. The application can solve the technical problems of complex structure, difficult disassembly and assembly and higher cost of the clamp assembly in the prior art.

Description

Pressure cooker cover and pressure cooker

Technical Field

The application relates to the technical field of kitchen appliances, in particular to a pressure cooker cover and a pressure cooker.

Background

Pressure cookers are a common cooking appliance, and the main function of the pressure cooker is to increase the heating temperature by increasing the air pressure in the cooker, so that the heating speed is increased. The pressure cooker mainly comprises a pressure cooker cover and a cooker body, wherein the pressure cooker cover and the cooker body are connected through a clamp, and the clamp can move relative to the cooker body so as to clamp or cancel clamping the pressure cooker cover and the cooker body at the same time. However, the existing clamp device has a complex structure, is not easy to assemble and disassemble and has high cost.

Disclosure of utility model

The application provides a pressure cooker cover and a pressure cooker, which are used for solving the technical problems of complex structure, difficult disassembly and assembly and higher cost of a clamp assembly in the prior art.

A first aspect of the present application provides a pressure cooker lid comprising a cover and a clamping arrangement detachably connected thereto, the clamping arrangement comprising:

the support piece is used for being connected with the cover body;

At least two clamps which are connected with the supporting piece in a sliding way and can slide along the radial direction of the cover body, wherein the clamps are provided with a first transmission part;

The transmission piece is rotationally connected to the supporting piece and is provided with a second transmission part which is matched with the first transmission part so as to convert the rotation of the transmission piece into radial movement of the clamp;

The driving piece is coaxially arranged with the transmission piece, the driving piece comprises a first end part and a second end part which are oppositely arranged, the first end part is fixedly connected with the transmission piece, and the second end part is provided with a holding part.

The pressure cooker cover comprises a cover body and a clamping device which are detachably connected, wherein the clamping device comprises a supporting piece, at least two clamps, a transmission piece and a driving piece; the supporting piece is used for connecting the cover body, namely, the supporting piece forms a main body part of the clamping device, and other parts of the clamping device are all arranged on the supporting piece, so that the clamping device can be taken as a whole and can be detachably connected with the cover body, and therefore, the clamping device is convenient to assemble, disassemble, clean and maintain; the clamp is connected with the supporting piece in a sliding way and can slide along the radial direction of the cover body, so that the clamping and the clamping cancellation are realized, and the clamp is provided with a first transmission part; the transmission part is rotationally connected with the supporting piece, the transmission piece is provided with a second transmission part, and the second transmission part is matched with the first transmission part so as to convert the rotation of the transmission piece into radial movement of the clamp; the driving piece and the driving piece are coaxially arranged, the driving piece comprises a first end part and a second end part which are oppositely arranged, the first end part is fixedly connected with the driving piece, the second end part is provided with a holding part, the holding part can be used for facilitating the holding of a user to apply acting force, and the driving piece is driven to rotate through the driving piece, so that the operation is more convenient.

Optionally, the support piece is provided with a pin shaft, the first end part is convexly provided with a first annular boss, the first annular boss is sleeved outside the pin shaft, and the first annular boss and the pin shaft form a running fit, so that the driving piece and the support piece form a running fit, and the stability of the rotation of the driving piece and the reliability of connection are improved.

Optionally, a limiting pin is arranged between the first annular boss and the pin shaft;

The side wall of the first annular boss is provided with a pin hole, and the pin hole penetrates through the side wall of the first annular boss;

A fan-shaped notch is formed in the position, opposite to the pin hole, of the pin shaft, the limiting pin is fixedly connected to the pin hole, and a part of the limiting pin is inserted into the fan-shaped notch;

Through the mutual cooperation of the limiting pin and the fan-shaped notch, the relative position of the first annular boss and the pin shaft along the axial direction can be limited, so that the driving piece and the supporting piece are prevented from being separated from each other, the relative position of the first annular boss and the pin shaft along the circumferential direction can be limited, and the maximum rotation angle of the driving piece is limited.

Optionally, the support piece is equipped with the annular boss of second, the annular boss cover of second is located the outside of first annular boss, the annular boss of second with first annular boss forms normal running fit, increases the cooperation area between drive piece and the support piece, further increases pivoted stability and the reliability of connection.

Optionally, the supporting piece is clamped between the transmission piece and the driving piece, so that the distance between the transmission piece and the supporting piece and the distance between the driving piece and the supporting piece are reduced, the transmission piece and the driving piece can be directly connected with the supporting piece, and the transmission piece and the driving piece can be stably connected with the supporting piece.

Optionally, a through hole is formed in the center of the pin shaft, and the transmission piece and the driving piece pass through the through hole and are fixedly connected, so that axial limit is formed on the transmission piece and the driving piece at the same time, and the transmission piece or the driving piece and the supporting piece are prevented from being separated from each other.

Optionally, one of the driving member and the first end is provided with a protrusion, and the other is provided with a groove, and the protrusion and the groove form a plug-in fit, so that reliable circumferential limit is formed between the driving member and the driving member, relative rotation between the driving member and the driving member is prevented, and response of the driving member can be more rapid and efficient.

Optionally, the support piece is equipped with the arc wall, the arc wall is followed the circumference of lid extends, protruding wearing to locate in the arc wall, and can follow the arc wall slides, forms the direction to driving medium and driving medium simultaneously through the arc wall, makes the action of driving medium and driving medium more steady.

Optionally, one of the first transmission part and the second transmission part is a guide groove, and the other is a guide block, and the guide block is in sliding fit with the guide groove;

the guide groove is obliquely arranged, and gradually inclines to a direction far away from the axis of the cover body along the extending direction of the guide groove;

The oblique guide grooves form a partial movement in the circumferential direction of the cover body and a partial movement in the radial direction of the cover body, so that the rotation of the transmission piece is converted into a radial movement of the clamp.

Optionally, the edge of the supporting piece extends in a direction far away from the axis of the cover body to form an extension part, and a positioning structure which is detachably connected is arranged between the extension part and the cover body; on one hand, the reliability of the connection between the support piece and the cover body can be improved, and the support piece and the cover body are prevented from rotating relatively; on the other hand, the edge position of the support piece can be fixed, and the edge of the support piece is prevented from being upwarped.

Optionally, the support comprises a first portion and a second portion which are mutually spliced, a radially extending cavity is formed between the first portion and the second portion, and a portion of the clamp is received in the cavity and is slidable along the cavity so that the clamp is integral with the support.

The second aspect of the application provides a pressure cooker, which comprises a cooker body and any one of the pressure cooker covers provided by the application, wherein the clamping device can clamp the pressure cooker cover and the cooker body simultaneously when the pressure cooker cover is connected to the cooker body.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.

Drawings

Fig. 1 is a schematic perspective view of a pressure cooker according to an embodiment of the application;

FIG. 2 is a bottom view of a clamping device according to an embodiment of the present application;

FIG. 3 is a schematic cross-sectional view of a pressure cooker according to an embodiment of the application;

fig. 4 is a schematic view of an internal structure of a pressure cooker according to an embodiment of the application;

FIG. 5 is a schematic view of a portion of the pressure cooker shown in FIG. 4;

FIG. 6 is a partial cross-sectional view of a pressure cooker cover provided in an embodiment of the application;

FIG. 7 is an enlarged view of a portion of another pressure cooker cover according to an embodiment of the application.

Reference numerals:

01-a pressure cooker cover;

02-a pot body;

1-a cover body;

11-a sealing ring;

12-opening stop valve;

13-positioning structure;

14-a pressure limiting valve;

2-clamping means;

21-a support;

211-pin shafts;

211 a-scalloped notches;

211 b-a through hole;

212-arc grooves;

213-a second annular boss;

21 a-a first part;

21 b-a second part;

22-clamp;

221-a first transmission part;

23-a transmission member;

231-a second transmission;

232-protrusions;

233-a connection;

24-driving member;

241-a first annular boss;

242-limiting pins;

243-pin holes;

244-cover;

245-grip

25-Screws.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.

Detailed Description

The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

In the description of the present application, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance unless explicitly specified or limited otherwise; the term "plurality" means two or more, unless specified or indicated otherwise; the terms "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, it should be understood that the terms "upper", "lower", and the like used in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In the context of this document, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on the other element or be indirectly on the other element through intervening elements.

As shown in fig. 1 to 5, an embodiment of the present application provides a pressure cooker, which includes a pressure cooker cover and a cooker body, wherein the pressure cooker cover is detachably connected to the cooker body. Wherein, the pressure cooker cover comprises a cover body 1 and a clamp device 2 which are detachably connected, for example, the clamp device 2 can be connected to the cover body 1 by a screw or a buckle, and when the pressure cooker cover 01 is connected to the cooker body 02, the clamp device 2 can clamp the pressure cooker cover 01 and the cooker body 02 at the same time, thereby realizing the reliable connection of the pressure cooker cover 01 and the cooker body 02; the cover body 1 is provided with a sealing ring 11, a pressure limiting valve 14 and a non-opening valve 12; the sealing ring 11 can form a sealing state between the pressure cooker cover and the cooker body, so that gas in the cooker is prevented from leaking between the pressure cooker cover and the cooker body; the pressure limiting valve 14 is used for limiting the maximum pressure in the pot; the opening stop valve 12 is provided to penetrate the pressure cooker cover and can be lifted up or down along the pressure cooker cover. When the opening stop valve 12 is lifted, a sealing state is formed, and high pressure can be formed in the pot; when the opening stop valve 12 descends, a pressure release state is formed, and the pressure in the cooker is released.

As shown in fig. 2-5, further, the clamping device 2 comprises a support 21, at least two clamps 22, a transmission member 23 and a driving member 24. The supporting member 21 is used for connecting the cover body 1, that is, the supporting member 21 forms a main body part of the clamping device 2, and other parts of the clamping device 2 are all installed on the supporting member 21, so that the clamping device 2 can be taken as a whole and can be detachably connected with the cover body 1, thereby facilitating disassembly, assembly, cleaning and maintenance; the clamp 22 is slidably connected to the support 21 and can slide along the radial direction of the cover 1, so as to realize clamping and unclamping, and the clamp 22 is provided with a first transmission part 221; the transmission part is rotatably connected to the supporting piece 21, the transmission piece 23 is provided with a second transmission part 231, and the second transmission part 231 is matched with the first transmission part 221 so as to convert the rotation of the transmission piece 23 into radial movement of the clamp 22; the driving member 24 is connected with the transmission member 23, and the driving member 24 is configured to receive external power, transmit the external power to the transmission member 23, and transmit the external power to the clamp 22 through the transmission member 23, thereby achieving movement of the clamp 22.

Specifically, the support member 21 is centered on the axis of the cover body 1, the edge of the support member 21 extends in a direction away from the axis of the cover body 1 to form an extension portion, and the clamp 22 is slidably connected to the extension portion, so as to increase the mating area of the support member 21 and the clamp 22, thereby increasing the reliability and stability of the connection of the clamp 22; the inside of the extension part is provided with a cavity extending along the radial direction of the cover body 1, and a part of the clamp 22 is accommodated in the cavity and can slide along the cavity; when the clamp 22 moves along the cavity in the direction of approaching to the axis of the cover body 1, the clamp 22 is clamped, the opening-stopping valve 12 can freely rise, and the cover closing safety is ensured; when the clamp 22 moves along the cavity in a direction away from the axis of the cover body 1, the clamp 22 removes clamping, and the clamp 22 blocks the lifting of the non-return valve 12, so that the cover opening safety is ensured. To facilitate the installation of the clamp 22, the support 21 may be configured as a first portion 21a and a second portion 21b that are mutually spliced, the first portion 21a and the second portion 21b form the cavity therebetween, and the first portion 21a and the second portion 21b may be fixed by means of screws or the like; a guide structure may be provided between the clamp 22 and the cavity to improve the stability of the motion of the clamp 22.

Wherein the transmission member 23 is rotatably connected to the center of the support member 21, and the clamps 22 are spaced around the center of the support member 21; the second transmission parts 231 are in one-to-one correspondence with the clamps 22, that is, one second transmission part 231 is provided on the transmission member 23 corresponding to each clamp 22, and the second transmission parts 231 are spaced around the center of the support member 21.

Further, a positioning structure 13 (such as a positioning column, a positioning groove, etc.) which is mutually matched and detachably connected is arranged between the extension part and the cover body 1; on the one hand, the reliability of the connection between the support 21 and the cover 1 can be increased, preventing the relative rotation of the two; on the other hand, the edge position of the supporting piece 21 can be fixed, and the edge of the supporting piece 21 is prevented from being tilted up.

Further, one of the first transmission part 221 and the second transmission part 231 is a guide groove, and the other is a guide block, and the guide block is in sliding fit with the guide groove, so that the relative movement of the first transmission part and the second transmission part is realized; the guide grooves are inclined, and gradually incline in a direction away from the axis of the cover body 1 along the extending direction of the guide grooves, and the inclined guide grooves form a partial movement along the circumferential direction of the cover body 1 and a partial movement along the radial direction of the cover body 1, so that the rotation of the transmission member 23 is converted into the radial movement of the clamp 22. It will be appreciated that the first transmission portion 221 and the second transmission portion 231 may take other configurations, such as a rack-and-pinion configuration, as long as the rotary motion can be converted into the linear motion.

Specifically, the guide grooves are distributed in a central symmetry around the axis of the transmission member 23, so that the movements of the clamps 22 can be consistent, thereby enabling the clamps 22 to be clamped or unclamped simultaneously. In one embodiment, the number of the clamps 22 is two, the two clamps 22 are symmetrically distributed, and the two guide grooves are parallel to each other, so that the structure is simple, the processing is easy, and the production cost is reduced.

Further, the driving member 24 and the transmission member 23 are coaxially arranged, that is, the driving member 24 and the transmission member 23 form coaxial power transmission, so that the structure is compact, the integral layout of the device is convenient, the loss of power transmission can be reduced, and the transmission precision and the transmission stability are improved. The driving member 24 includes a first end and a second end, which are oppositely disposed, the first end being an end of the driving member 24 facing the transmission member 23, and the second end being an end of the driving member 24 facing away from the transmission member 23; the first end is fixedly connected to the transmission piece 23, the second end is provided with the holding part 245, the holding part 245 can be used for facilitating the holding of a user to apply acting force, and the transmission piece 23 is driven to rotate through the driving piece 24, so that the operation is more convenient.

Further, the grip portion 245 extends in a direction away from the axis of the cover 1, that is, the grip portion 245 forms a distinct step with the middle of the driving member 24; in one aspect, the grip 245 forms a handle of the pressure cooker lid, through which the user can lift the pressure cooker lid by the grip 245; on the other hand, the grip portion 245 can form a large grip area, so that the force can be uniformly dispersed to the whole palm, and the burden on the hand of the user is reduced. It will be appreciated that the gripping portion 245 may be provided in other suitable configurations, so long as it is capable of being gripped by a user for application of force.

As shown in fig. 3-6, further, the first end is provided with a cover 244, the cover 244 is circular, the cover 244 covers the upper part of the transmission member 23, and the cover 244 covers and protects the internal transmission structure, so that the integrity of the device can be improved, the appearance can be improved, the use safety can be improved, and the internal transmission structure can be prevented from being scratched by a user.

Specifically, the radial dimension of the first end portion increases to form a circular cap 244, that is, the first end portion forms a distinct step with the middle of the driver 24; the cover 244 is recessed inward toward one side of the support 21, thereby forming a large installation space between the cover 244 and the support 21; the edges of the cover 244 may be in close contact with the support 21 or may be slightly spaced from the support, which may allow the cover 244 to rotate with the driver 24 and provide a reliable barrier and protection.

Further, the center of the supporting member 21 is provided with a pin shaft 211, the first end portion is convexly provided with a first annular boss 241, the first annular boss 241 is sleeved outside the pin shaft 211, and the first annular boss 241 and the pin shaft 211 form a running fit, so that the driving member 24 and the supporting member 21 form a running fit, and the stability of rotation and the connection reliability of the driving member 24 are improved.

Further, a limiting pin 242 is arranged between the first annular boss 241 and the pin shaft 211, and the relative position of the driving piece 24 and the supporting piece 21 is limited by the limiting pin 242, so that the structure is simple, and the connection is reliable; the side wall of the first annular boss 241 is provided with a pin hole 243, and the pin hole 243 penetrates through the side wall of the first annular boss 241; a fan-shaped notch 211a is formed in the position, opposite to the pin hole 243, of the pin shaft 211, a limiting pin 242 is fixedly connected to the pin hole 243, and a part of the limiting pin 242 is inserted into the fan-shaped notch 211a; by the cooperation of the limiting pin 242 and the fan-shaped notch 211a, the relative position of the first annular boss 241 and the pin shaft 211 along the axial direction can be limited, so that the driving piece 24 and the supporting piece 21 are prevented from being separated from each other, and the relative position of the first annular boss 241 and the pin shaft 211 along the circumferential direction can be limited, so that the maximum rotation angle of the driving piece 24 is limited. In addition, the fan-shaped notch 211a is matched with the area swept by the rotation of the limiting pin 242, so that the effective utilization rate of the fan-shaped notch 211a is increased, and the structural strength of the pin shaft 211 is kept as much as possible; the edge of the fan-shaped notch 211a and the pin shaft 211 can be attached to each other, so that the contact area can be increased, and more reliable limit can be formed. It will be appreciated that the scalloped notch 211a may be replaced with other shapes, such as an arcuate notch or the like.

Wherein, the center line of the fan-shaped notch 211a coincides with the center line of the pin shaft 211, the center angle of the fan-shaped notch 211a is adapted to the maximum rotation angle of the driving piece 24, and the height of the fan-shaped notch 211a is adapted to the height of the limiting pin 242, so that the limiting pin 242 can only swing along the circumferential direction of the pin shaft 211 along with the driving piece 24, but cannot move along the axial direction of the pin shaft 211, and a user can lift the pressure cooker cover through the holding part 245.

Further, the two sides of the pin shaft 211 may be provided with the sector-shaped notches 211a, respectively, the sector-shaped notches 211a at the two sides are symmetrical to each other, and the sector-shaped notches 211a at the two sides are communicated with each other at the center of the pin shaft 211; the limiting pins 242 may sequentially pass through the fan-shaped notches 211a at both sides, and both ends of the limiting pins 242 are respectively connected to both sides of the first annular boss 241, so that both ends of the limiting pins 242 are respectively supported and fixed, and the reliability of connection is increased.

Further, the supporting piece 21 is provided with a second annular boss 213, the second annular boss 213 is sleeved outside the first annular boss 241, the second annular boss 213 and the first annular boss 241 form a running fit, the fit area between the driving piece 24 and the supporting piece 21 is increased, and the stability of rotation and the reliability of connection are further increased.

Further, the supporting member 21 is sandwiched between the transmission member 23 and the driving member 24, for example, the driving member 24 is stacked above the supporting member 21, and the transmission member 23 is stacked below the supporting member 21; the pin shafts 211 protrude from the surface of the supporting member 21 at both sides of the supporting member 21 to reduce the distance between the driving member 23 and the supporting member 21 and the distance between the driving member 24 and the supporting member 21, so that both the driving member 23 and the driving member 24 can be directly connected to the supporting member 21, and thus, both the driving member 23 and the driving member 24 can be stably connected to the supporting member 21. A locking structure (e.g. a resilient locking pin or the like) may be provided between the transmission member 23 and the support member 21 or between the driving member 24 and the support member 21 to enable the clamp 22 to stay stably in the clamped position or to cancel the clamped position.

Further, one of the driving member 23 and the first end portion is provided with a protrusion 232, and the other is provided with a groove, and the protrusion 232 and the groove form a plug-in fit, so that a reliable circumferential limit is formed between the driving member 24 and the driving member 23, relative rotation between the driving member 24 and the driving member 23 is prevented, and response of the driving member 23 can be more rapid and efficient.

Further, the supporting member 21 is provided with an arc groove 212, the arc groove 212 penetrates through the arc groove 212 along the thickness direction of the supporting member 21, the arc groove 212 extends along the circumferential direction of the cover body 1, the protrusion 232 penetrates into the guide groove and can slide along the arc groove 212, and the arc groove 212 is used for guiding the transmission member 23 and the driving member 24 at the same time, so that the motion of the transmission member 23 and the driving member 24 is more stable; the length of the arcuate slot 212 may be adapted to the rotational travel of the driver 24 so as to define a maximum angle of rotation of the driver 24.

Further, referring to fig. 7, a through hole 211b is provided at the center of the pin shaft 211, and the driving member 23 and the driving member 24 are fixedly coupled through the through hole 211b, thereby simultaneously forming an axial limit for the driving member 23 and the driving member 24, thereby preventing the driving member 23 or the driving member 24 from being separated from the supporting member 21.

Specifically, the driving member 23 and the driving member 24 may be fixedly connected by a threaded fastener or a buckle. Taking a threaded fastener as an example, a connecting portion 233 may be disposed on a side of the driving member 23 facing the supporting member 21, and the connecting portion 233 is inserted into the through hole 211b and forms a rotational fit with the through hole 211b, so as to increase the stability of rotation and the reliability of connection of the driving member 23; the connection portion 233 is provided with a screw hole through which the screw 25 passes through the driver 24 and then forms a screw-fit.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (12)

1. Pressure cooker lid, characterized in that it comprises a cover body (1) and a clamping device (2) which are detachably connected, said clamping device (2) comprising:

-a support (21), the support (21) being for connecting the cover (1);

At least two clamps (22), wherein the clamps (22) are connected to the supporting piece (21) in a sliding way and can slide along the radial direction of the cover body (1), and the clamps (22) are provided with a first transmission part (221);

The transmission piece (23), the transmission piece (23) is rotatably connected to the supporting piece (21), the transmission piece (23) is provided with a second transmission part (231), and the second transmission part (231) is matched with the first transmission part (221) so as to convert the rotation of the transmission piece (23) into radial movement of the clamp (22);

The driving piece (24), driving piece (24) with driving piece (23) coaxial arrangement, driving piece (24) are including relative first tip and the second tip that sets up, first tip fixed connection in driving piece (23), the second tip is formed with gripping portion (245).

2. Pressure cooker lid according to claim 1, characterized in that the support (21) is provided with a pin (211), the first end portion is provided with a first annular boss (241) in a protruding manner, the first annular boss (241) is sleeved outside the pin (211), and the first annular boss (241) forms a running fit with the pin (211).

3. Pressure cooker lid according to claim 2, characterized in that a limit pin (242) is arranged between the first annular boss (241) and the pin shaft (211);

A pin hole (243) is formed in the side wall of the first annular boss (241), and the pin hole (243) penetrates through the side wall of the first annular boss (241);

The pin shaft (211) is provided with a fan-shaped notch (211 a) at the position opposite to the pin hole (243), the limiting pin (242) is fixedly connected to the pin hole (243), and a part of the limiting pin (242) is inserted into the fan-shaped notch (211 a).

4. Pressure cooker lid according to claim 2, characterized in that the support (21) is provided with a second annular boss (213), the second annular boss (213) being nested outside the first annular boss (241), the second annular boss (213) forming a running fit with the first annular boss (241).

5. Pressure cooker lid according to claim 2, characterized in that the support element (21) is sandwiched between the transmission element (23) and the driving element (24).

6. Pressure cooker lid according to claim 5, characterized in that the centre of the pin (211) is provided with a through hole (211 b), the transmission element (23) being fixedly connected with the driving element (24) through the through hole (211 b).

7. Pressure cooker lid according to claim 5, characterized in that one of the transmission element (23) and the first end is provided with a projection (232) and the other is provided with a recess, the projection (232) forming a plug-in fit with the recess.

8. Pressure cooker lid according to claim 7, characterized in that the support (21) is provided with an arc-shaped groove (212), the arc-shaped groove (212) extending in the circumferential direction of the cover body (1), the projection (232) being provided in the arc-shaped groove (212) and being able to slide along the arc-shaped groove (212).

9. The pressure cooker lid according to any one of claims 1-8, characterized in that one of the first transmission portion (221) and the second transmission portion (231) is a guide slot, and the other is a guide block, and the guide block is in sliding fit with the guide slot;

the guide groove is obliquely arranged, and gradually inclines to a direction far away from the axis of the cover body (1) along the extending direction of the guide groove.

10. Pressure cooker lid according to any one of claims 1-8, characterized in that the edge of the support (21) extends away from the axis of the cover (1) to form an extension, between which an detachably connected positioning structure is provided with the cover (1).

11. Pressure cooker lid according to claim 10, characterized in that the support (21) comprises a first portion (21 a) and a second portion (21 b) mutually joined, said first portion (21 a) and said second portion (21 b) forming a radially extending cavity therebetween, a portion of the clamp (22) being housed in said cavity and being able to slide along said cavity.

12. A pressure cooker, characterized in that it comprises a cooker body (02) and a pressure cooker cover (01) according to any one of claims 1-11, said clamping means (2) being able to clamp said pressure cooker cover (01) and said cooker body (02) simultaneously when said pressure cooker cover (01) is connected to said cooker body (02).