Clamp device, pressure cooker cover and pressure cooker

Abstract

The utility model provides a clamp device, a pressure cooker cover and a pressure cooker. The clamp device comprises a supporting piece and a clamping piece, the at least two clamps are connected to the supporting piece in a sliding mode so as to achieve clamping or cancel clamping, and the clamps can be locked in a clamping achieving state; the rotating piece is rotationally connected to the supporting piece, and the rotating piece is in transmission connection with the clamp so as to drive the clamp to slide along the supporting piece; the first elastic piece is arranged between the rotating piece and the supporting piece so as to force the rotating piece to drive the clamp to move in the clamping cancelling direction. The pressure cooker can be ensured to perform high-pressure cooking when the clamp is reliably in a clamping state, and the use safety of the pressure cooker is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of kitchen utensils, and in particular to a clamp device, a pressure cooker cover and a pressure cooker. BACKGROUND

[0002] A pressure cooker is a common cooking utensil, which mainly functions to increase the temperature of heating and thus the speed of heating by increasing the air pressure in the pot. The pressure cooker mainly consists of a pressure cooker cover and a pot body, and the pressure cooker cover and the pot body are connected through a clamp. The clamp can move relative to the pot body to clamp or unclamp the pressure cooker cover and the pot body at the same time. Only when the clamp is in the clamping state can the pressure cooker normally withstand high pressure. During the use of the pressure cooker, the user may misoperate, which causes the clamp to not reliably be in the clamping state. When the high pressure state is formed in the pot, danger is likely to occur. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a clamp device, a pressure cooker cover and a pressure cooker to ensure that the pressure cooker is in the clamping state for high-pressure cooking and to ensure the safe use of the pressure cooker.

[0004] The first aspect of the present application provides a clamp device, which comprises:

[0005] a support member;

[0006] at least two clamps, which are slidingly connected to the support member to clamp or unclamp, and which can be locked in the clamping state;

[0007] a rotating member, which is rotationally connected to the support member and is in transmission connection with the clamps to drive the clamps to slide along the support member;

[0008] a first elastic member, which is arranged between the rotating member and the support member to force the rotating member to drive the clamps to move in the unclamping direction.

[0009] The clamp device provided by the application comprises a support, at least two clamps, a rotating member and a first elastic member; the clamps are slidingly connected to the support and can slide along the radial direction of the cover body to realize clamping or unclamping; the clamps can be locked in a state of realizing clamping to prevent the position of the clamps from changing during high-pressure cooking and affecting the safety of the pressure cooker; the rotating member is rotationally connected to the center of the support and is in transmission connection with the clamps to drive the clamps to slide along the support, so that the rotating member drives the clamps to realize clamping or unclamping; the first elastic member is arranged between the rotating member and the support to force the rotating member to drive the clamps to move in a direction of unclamping; that is, when the clamps fail to be locked in the state of realizing clamping during high-pressure cooking, the first elastic member drives the rotating member to rotate, so that the clamps move in the direction of unclamping, thereby unclamping the clamps; at this time, high pressure cannot be generated in the pressure cooker, and therefore the safety of the pressure cooker can be ensured.

[0010] Optionally, the clamp device further comprises a locking member, the locking member is slidingly connected to the rotating member, and a part of the locking member penetrates through the rotating member and abuts against the support; the support is provided with a first locking groove and a second locking groove, the first locking groove and the second locking groove are spaced apart around the center of the support; when the locking member faces the first locking groove due to the rotation of the rotating member, the clamps realize clamping, and the locking member can be clamped into the first locking groove, so that the clamps can be reliably locked in the state of realizing clamping to meet the high-pressure cooking requirement of the pressure cooker; when the locking member faces the second locking groove due to the rotation of the rotating member, the clamps unclamp, and the locking member can be clamped into the second locking groove, so that the clamps can be reliably locked in the state of unclamping to prevent the position of the clamps from changing during the opening and closing operation of the pressure cooker cover and affecting the normal closing or removal of the pressure cooker cover.

[0011] Optionally, a second elastic member is arranged between the locking member and the rotating member, and the second elastic member forces the locking member to move in a direction close to the support; when the locking member faces the first locking groove or the second locking groove due to the rotation of the rotating member, the locking member automatically moves in the direction close to the support under the action of the second elastic member and is clamped into the first locking groove or the second locking groove, thereby realizing automatic locking of the clamps, and the user does not need to manually operate the movement of the locking member, further improving the convenience of operation.

[0012] Optionally, the locking member slides along the axial direction of the rotating member, and the clamping device further comprises an unlocking member arranged in parallel with the locking member; the unlocking member is in transmission connection with the locking member, and the movement direction of the unlocking member is opposite to that of the locking member. On one hand, the unlocking member slides along the axial direction of the rotating member to avoid the user from accidentally pressing the unlocking member when holding the rotating member, thus causing unnecessary change of the state of the clamping device; on the other hand, the movement direction of the unlocking member is opposite to that of the locking member, that is, when the unlocking member is pressed downward, the locking member moves away from the support member to realize unlocking, and the user can realize the unlocking operation only by using a single finger, thus making the unlocking operation more convenient.

[0013] Optionally, the unlocking member and the locking member are connected with each other through a lever, the middle part of the lever is rotationally connected to the rotating member, the power arm of the lever is connected to the unlocking member, and the resistance arm of the lever is connected to the locking member. The lever has simple structure and low machining precision requirement, thus the overall structure of the clamping device can be simplified, and the production cost of the clamping device can be reduced.

[0014] Optionally, the clamping device further comprises a third elastic member, and the third elastic member is respectively abutted against the two opposite sides of the power arm. On one hand, the upper and lower sides of the power arm are subjected to force, thus the stability of the lever itself can be improved, and abnormality such as knocking or noise can be prevented from being caused by the up-and-down swing of the lever during use; on the other hand, after the unlocking member is unlocked, the unlocking member moves upward together with the power arm under the action of the third elastic member, thus the lever and the unlocking member can be automatically reset.

[0015] Optionally, the side of the power arm facing the unlocking member is a plane, and the side of the power arm facing the third elastic member is an outward convex arc surface. The unlocking member is abutted against the plane of the surface of the power arm to simplify the structure of the lever and reduce the production cost; the third elastic member is abutted against the arc surface of the surface of the power arm to form stable and reliable contact between the elastic member and the power arm, thus preventing the third elastic member from being inclined or bent due to uneven force.

[0016] Optionally, a side of the support member away from the rotating member is provided with an arc-shaped groove extending around the center of the rotating member; along the extending direction of the arc-shaped groove, the groove bottom of the arc-shaped groove comprises arc-shaped hole segments and arc-shaped plate segments arranged in sequence; the rotating member is provided with a connecting column at an end thereof facing the support member, the connecting column is inserted into the arc-shaped hole segments and can slide along the extending direction of the arc-shaped hole segments; the first elastic member is mounted on the arc-shaped plate segments, and the two ends of the first elastic member are elastically abutted against the connecting column and the groove wall of the arc-shaped groove respectively to force the rotating member to move in the direction of canceling clamping together with the clamp jaw. On the one hand, the arc-shaped groove limits and guides the first elastic member, which can ensure that the first elastic member stretches and contracts in the expected direction, thereby pushing the rotating member to rotate; on the other hand, the first elastic member abuts against the eccentrically arranged connecting column, which can increase the moment of the first elastic member, so that the first elastic member forms a larger torque with a smaller acting force, thereby ensuring that the first elastic member can push the rotating member to rotate. In addition, the first elastic member and the connecting column are both located in the arc-shaped groove, which can also make the overall structure more compact.

[0017] The second aspect of the present application provides a pressure cooker cover, which comprises a cover body and any one of the clamp jaw devices provided by the present application, and the clamp jaw device is connected to the cover body. When the clamp jaw fails to be locked in the state of achieving clamping during high-pressure cooking, the first elastic member pushes the rotating member to rotate, so that the clamp jaw moves in the direction of canceling clamping, thereby canceling the clamping of the clamp jaw. At this time, high pressure cannot be generated in the pressure cooker, so the use safety of the pressure cooker can be ensured.

[0018] The third aspect of the present application provides a pressure cooker, which comprises a pot body and any one of the pressure cooker covers provided by the present application. When the pressure cooker cover is covered on the pot body, the clamp jaw device can clamp the pressure cooker cover and the pot body at the same time. When the clamp jaw fails to be locked in the state of achieving clamping during high-pressure cooking, the first elastic member pushes the rotating member to rotate, so that the clamp jaw moves in the direction of canceling clamping, thereby canceling the clamping of the clamp jaw. At this time, high pressure cannot be generated in the pressure cooker, so the use safety of the pressure cooker can be ensured.

[0019] It should be understood that the above general description and the following detailed description are only exemplary and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 Structure schematic diagram of the pressure cooker cover provided by the embodiment of the present application;

[0021] Figure 2 Structure schematic diagram of the clamp jaw device provided by the embodiment of the present application;

[0022] Figure 3 Structure schematic diagram of the clamp jaw device provided by the embodiment of the present application; Figure 2 Structure schematic diagram of the clamp jaw device provided by the embodiment of the present application;

[0023] Figure 4 A partial enlarged view of the support member provided in the embodiments of this application;

[0024] Figure 5 This is a partial cross-sectional view of the clamping device provided in an embodiment of this application;

[0025] Figure 6 A schematic diagram illustrating the released state of the unlocking component provided in an embodiment of this application;

[0026] Figure 7 This is a schematic diagram of the pressing state of the unlocking component provided in the embodiments of this application.

[0027] Figure label:

[0028] 10-Clamping device;

[0029] 20-Cap;

[0030] 1-Supporting component;

[0031] 11-Arc-shaped groove;

[0032] 111 - Arc-shaped hole segment;

[0033] 112 - Arc-shaped plate segment;

[0034] 12-First locking groove;

[0035] 13-Second locking groove;

[0036] 2- Clamps;

[0037] 21-Extending arm;

[0038] 3-Rotating component;

[0039] 3a - Part 1;

[0040] 3b - Part Two;

[0041] 31-Connecting post;

[0042] 4-First elastic element;

[0043] 5-Locking element;

[0044] 6-Second elastic element;

[0045] 7-Unlocking parts;

[0046] 8-Leverage;

[0047] 81-Power boom;

[0048] 82-Resistance arm;

[0049] 9-Third elastic element.

[0050] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0052] In the description of this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; unless otherwise specified or explained, the term "multiple" refers to two or more; the terms "connected," "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0053] In the description of this specification, it should be understood that the directional terms such as "upper" and "lower" used in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should also be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0054] like Figure 1 As shown in the illustration, this application provides a pressure cooker lid that can be fitted onto a pot body, forming a pressure cooker together with the pot body. The pressure cooker lid includes a detachably connected lid body 20 and a clamping device 10. For example, the clamping device 10 can be connected to the lid body 20 by screws or clips. When the pressure cooker lid is fitted onto the pot body, the clamping device 10 can simultaneously clamp the pressure cooker lid and the pot body, thereby achieving a reliable connection between the pressure cooker lid and the pot body. The lid body 20 is provided with a sealing ring, a pressure limiting valve, and a check valve. The sealing ring is used to form a seal between the pressure cooker lid and the pot body, the pressure limiting valve is used to limit the maximum pressure inside the pot, and the check valve is used to establish a sealed state or a pressure relief state.

[0055] like Figures 1-4As shown, the clamping device 10 provided in this embodiment includes a support member 1, at least two clamps 2, and a rotating member 3. The support member 1 is used to connect to the lid 20, that is, the support member 1 forms the main body of the clamping device 10, and all other components of the clamping device 10 are installed on the support member 1, so that the clamping device 10 can be used as a whole, making it convenient for the pressure cooker lid to be disassembled, cleaned, and maintained as needed. The clamps 2 are slidably connected to the support member 1 and can slide radially along the lid 20 to clamp or unclamp; when the clamps 2 clamp, a firm connection is formed between the pressure cooker lid and the pot body; when the clamps 2 unclamp, the pressure cooker lid can be closed onto the pot body or removed from the pot body; the clamps 2 can be locked in the clamped state to prevent the position of the clamps 2 from changing during high-pressure cooking, which would affect the safety of using the pressure cooker. The rotating component 3 is rotatably connected to the center of the support component 1. The rotating component 3 is connected to the clamp 2 in a transmission manner, so as to drive the clamp 2 to slide along the support component 1. That is to say, the rotating component 3 and the clamp 2 can be provided with mutually cooperating guide pins and guide grooves, gear rack mechanisms or cam mechanisms, etc., so as to convert the rotation of the rotating component 3 into the sliding of the clamp 2, thereby enabling the rotating component 3 to drive the clamp 2 to clamp or unclamp.

[0056] Specifically, the rotating component 3 may include a first part 3a and a second part 3b connected to each other. The first part 3a is located above the support 1 and can directly serve as the lid of the pressure cooker. The user holds the first part 3a of the rotating component 3 and lifts the pressure cooker lid, thereby reducing the number of parts and simplifying the overall structure of the pressure cooker lid. The second part 3b is located below the support 1. The clamp 2 has an extension arm 21 on the side near the center of the lid 20. The extension arm 21 is connected to the second part 3b to prevent accidental pinching of fingers.

[0057] The rotating member 3 is capable of rotating in a first direction (e.g., clockwise) and a second direction (e.g., counterclockwise), with the first and second directions being opposite. When the rotating member 3 rotates in the first direction, it drives the clamp 2 to move in the direction of clamping; when the rotating member 3 rotates in the second direction, it drives the clamp 2 to move in the direction of releasing the clamp.

[0058] Furthermore, the clamping device 10 also includes a first elastic element 4 (e.g., a spring, torsion spring, or spring sheet). The first elastic element 4 is disposed between the rotating member 3 and the supporting member 1 to force the rotating member 3 to drive the clamp 2 to move in the direction of releasing the clamp. That is, during high-pressure cooking, when the clamp 2 fails to lock in the clamping state, the first elastic element 4 pushes the rotating member 3 to rotate in the second direction, causing the clamp 2 to move in the direction of releasing the clamp, thereby releasing the clamp. At this time, high pressure cannot be generated inside the pressure cooker, thus ensuring the safety of using the pressure cooker.

[0059] Furthermore, the support member 1 has an arc-shaped groove 11 on the side opposite to the rotating member 3. The arc-shaped groove 11 extends around the center of the rotating member 3, meaning that the arc-shaped groove 11 is coaxially arranged with the center of the rotating member 3. The bottom of the arc-shaped groove 11 has an arc-shaped hole section 111. The end of the rotating member 3 facing the support member 1 has a connecting post 31. The connecting post 31 is eccentrically arranged with the rotating member 3, inserts into the arc-shaped hole section 111, and can slide along the extension direction of the arc-shaped hole section 111. On the one hand, the arc-shaped hole section 111 limits and guides the rotational movement of the rotating member 3, ensuring that the rotating member 3 can rotate smoothly on the support member 1. On the other hand, by setting the arc-shaped hole section 111 at the bottom of the arc-shaped groove 11, the thickness of the arc-shaped hole section 111 can be reduced, thereby reducing the contact area between the connecting post 31 and the arc-shaped hole section 111, which also reduces the frictional resistance of the connecting post 31 moving along the arc-shaped hole section 111, making the operation of the rotating member 3 easier.

[0060] Furthermore, the bottom of the arc-shaped groove 11 is provided with an arc-shaped plate segment 112, and the arc-shaped hole segment 111 and the arc-shaped plate segment 112 are arranged sequentially along the extension direction of the arc-shaped groove 11. The first elastic member 4 is installed on the arc-shaped plate segment 112, and the two ends of the first elastic member 4 elastically abut against the connecting post 31 and the groove wall of the arc-shaped groove 11, respectively, so as to force the rotating member 3 to drive the clamp 2 to move in the direction of unclamping. On the one hand, the arc-shaped groove 11 limits and guides the first elastic member 4, which can ensure that the first elastic member 4 extends and retracts in the expected direction, thereby driving the rotating member 3 to rotate; on the other hand, the first elastic member 4 abuts against the eccentrically set connecting post 31, which can increase the torque of the first elastic member 4, so that the first elastic member 4 can generate a large torque with a small force, ensuring that the first elastic member 4 can drive the rotating member 3 to rotate. In addition, the first elastic member 4 and the connecting post 31 are both located in the arc-shaped groove 11, which can also make the overall structure more compact.

[0061] like Figures 4-7 As shown, the clamping device 10 further includes a locking member 5, which is slidably connected to the rotating member 3. A portion of the locking member 5 passes through the rotating member 3 and abuts against the support member 1. The support member 1 is provided with a first locking groove 12, and the locking member 5 can engage or disengage from the first locking groove 12 to lock or release the rotating member 3 when the clamping device 2 is clamped. That is, when the locking member 5 is aligned with the first locking groove 12 as the rotating member 3 rotates, the clamping device 2 clamps, and the locking member 5 can move towards the support member 1 and engage with the first locking groove 12, thereby reliably locking the clamping device 2 in the clamped state to meet the high-pressure cooking requirements of the pressure cooker; when the locking member 5 moves away from the support member 1 and disengages from the first locking groove 12, the clamping device 2 is unlocked, and under the action of the first elastic member 4, the rotating member 3 automatically rotates in the second direction, causing the clamping device 2 to automatically release the clamp, thus making the opening operation of the pressure cooker lid easier.

[0062] Furthermore, the support member 1 is provided with a second locking groove 13, which is distributed around the center of the support member 1 at intervals with the first locking groove 12, and the surface between the second locking groove 13 and the first locking groove 12 is smooth. The locking member 5 can engage or disengage from the second locking groove 13 to lock or release the rotating member 3 when the clamp 2 is not clamped. That is, when the locking member 5 is aligned with the second locking groove 13 as the rotating member 3 rotates, the clamp 2 is not clamped, and the locking member 5 can move towards the support member 1 and engage with the second locking groove 13, thereby reliably locking the clamp 2 in the unclamped state, preventing the position of the clamp 2 from changing during the opening and closing of the pressure cooker lid, which would affect the normal closing or removal of the pressure cooker lid; when the locking member 5 moves away from the support member 1 and disengages from the second locking groove 13, the clamp 2 is unlocked, and the user can operate the rotating member 3 to rotate in the first direction to clamp the clamp 2, thereby fixing the pressure cooker lid to the pot body.

[0063] Furthermore, a second elastic element 6 (e.g., a spring) is provided between the locking member 5 and the rotating member 3. The second elastic element 6 forces the locking member 5 to move towards the support member 1. When the locking member 5 is aligned with the first locking groove 12 or the second locking groove 13 as the rotating member 3 rotates, the locking member 5 automatically moves towards the support member 1 under the action of the second elastic element 6 and engages with the first locking groove 12 or the second locking groove 13, thereby achieving automatic locking of the clamp 2. The user does not need to manually operate the movement of the locking member 5, further improving the convenience of operation.

[0064] Furthermore, the locking member 5 slides along the axial direction of the rotating member 3 to fully utilize the space along the height direction of the rotating member 3 and avoid excessive radial dimensions of the rotating member 3, which would affect the ease of gripping the rotating member 3. The clamping device 10 also includes an unlocking member 7, which is arranged side by side with the locking member 5. That is, the unlocking member 7 slides along the axial direction of the rotating member 3 to prevent the user from accidentally pressing the unlocking member 7 when gripping the rotating member 3, causing unnecessary changes in the state of the clamp 2. The unlocking member 7 is connected to the locking member 5 in a driving connection, and the movement directions of the unlocking member 7 and the locking member 5 are opposite. That is, when the unlocking member 7 is pressed down, the locking member 5 moves away from the support member 1 to unlock, and the user can unlock the device with just one finger, making the unlocking operation more convenient.

[0065] Furthermore, the unlocking element 7 and the locking element 5 are interconnected via a lever 8. The middle part of the lever 8 is rotatably connected to the rotating element 3, the power arm 81 of the lever 8 is connected to the unlocking element 7, and the resistance arm 82 of the lever 8 is connected to the locking element 5. The lever 8 has a simple structure and low machining precision requirements, thus simplifying the overall structure of the clamping device 10 and reducing its production cost. Understandably, the unlocking element 7 and the locking element 5 can also be interconnected via gears or other mechanisms, as long as the movement directions of the unlocking element 7 and the locking element 5 are opposite.

[0066] Furthermore, the clamping device 10 also includes a third elastic element 9 (e.g., a spring), which abuts against the unlocking element 7 on opposite sides of the power arm 81. On one hand, the power arm 81 is subjected to force on both its upper and lower sides, which can improve the stability of the lever 8 itself and prevent the lever 8 from swinging up and down during use, causing abnormalities such as bumps or noise. On the other hand, when the unlocking element 7 completes unlocking, under the action of the third elastic element 9, the unlocking element 7 moves upward along with the power arm 81, so that the lever 8 and the unlocking element 7 can automatically reset.

[0067] Furthermore, the side of the power arm 81 facing the unlocking member 7 is a flat surface, meaning that the unlocking member 7 abuts against the flat surface of the power arm 81, thus simplifying the structure of the lever 8 and reducing production costs. The side of the power arm 81 facing the third elastic member 9 is a convex arc surface, meaning that the third elastic member 9 abuts against the arc surface of the power arm 81, so that the elastic member and the power arm 81 form a stable and reliable contact, preventing the third elastic member 9 from being unevenly stressed and causing abnormalities such as tilting or bending.

[0068] Furthermore, the end of the unlocking component 7 facing the power arm 81 can be provided with a rounded corner or a spherical surface, so that the unlocking component 7 and the power arm 81 can form a smooth contact, preventing abnormalities such as wear or scratches between the unlocking component 7 and the power arm 81, and improving the smoothness of the operation of the unlocking component 7.

[0069] In addition, this application provides a pressure cooker, which includes a pot body and any of the pressure cooker lids provided in this application. When the pressure cooker lid is closed on the pot body, the clamping device 10 can simultaneously clamp the pressure cooker lid and the pot body.

[0070] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A clamping device, characterized in that, include: Support component (1); At least two clamps (2) are slidably connected to the support (1) to clamp or de-clamp, and the clamps (2) can be locked in the clamped state; Rotating component (3) is rotatably connected to the support component (1). The rotating component (3) is connected to the clamp (2) in a transmission manner so as to drive the clamp (2) to slide along the support component (1). A first elastic element (4) is disposed between the rotating element (3) and the supporting element (1) to force the rotating element (3) to drive the clamp (2) to move in the direction of unclamping.

2. The clamping device according to claim 1, characterized in that, The clamping device further includes a locking member (5), which is slidably connected to the rotating member (3), and a portion of the locking member (5) passes through the rotating member (3) and abuts against the support member (1); The support member (1) is provided with a first locking groove (12) and a second locking groove (13), and the first locking groove (12) and the second locking groove (13) are distributed at intervals around the center of the support member (1); When the locking member (5) is aligned with the first locking groove (12) as the rotating member (3) rotates, the clamp (2) clamps, and the locking member (5) can be engaged in the first locking groove (12). When the locking member (5) is aligned with the second locking groove (13) as the rotating member (3) rotates, the clamp (2) releases its clamping action, and the locking member (5) can engage with the second locking groove (13).

3. The clamping device according to claim 2, characterized in that, A second elastic element (6) is provided between the locking member (5) and the rotating member (3), and the second elastic element (6) forces the locking member (5) to move toward the support member (1).

4. The clamping device according to claim 2, characterized in that, The locking member (5) slides along the axial direction of the rotating member (3), and the clamping device further includes an unlocking member (7), which is arranged side by side with the locking member (5); The unlocking member (7) is connected to the locking member (5) in a transmission manner, and the movement direction of the unlocking member (7) is opposite to that of the locking member (5).

5. The clamping device according to claim 4, characterized in that, The unlocking member (7) and the locking member (5) are connected to each other by a lever (8). The middle part of the lever (8) is rotatably connected to the rotating member (3). The power arm (81) of the lever (8) is connected to the unlocking member (7), and the resistance arm (82) of the lever (8) is connected to the locking member (5).

6. The clamping device according to claim 5, characterized in that, The clamping device further includes a third elastic element (9), which abuts against the opposite sides of the power arm (81) along with the unlocking element (7).

7. The clamping device according to claim 6, characterized in that, The side of the power arm (81) facing the unlocking member (7) is a flat surface, and the side of the power arm (81) facing the third elastic member (9) is a convex arc surface.

8. The clamping device according to any one of claims 1-7, characterized in that, The support member (1) has an arc-shaped groove (11) on the side opposite to the rotating member (3), and the arc-shaped groove (11) extends around the center of the rotating member (3); Along the extending direction of the arc groove (11), the bottom of the arc groove (11) includes arc-shaped hole segments (111) and arc-shaped plate segments (112) arranged in sequence; The rotating component (3) has a connecting post (31) at one end facing the support component (1). The connecting post (31) is inserted into the arc-shaped hole segment (111) and can slide along the extension direction of the arc-shaped hole segment (111). The first elastic element (4) is installed on the arc-shaped plate segment (112). The two ends of the first elastic element (4) elastically abut against the connecting column (31) and the groove wall of the arc-shaped groove (11) respectively, so as to force the rotating element (3) to drive the clamp (2) to move in the direction of unclamping.

9. A pressure cooker lid, characterized in that, It includes a cover and a clamping device as described in any one of claims 1-8, the clamping device being connected to the cover.

10. A pressure cooker, characterized in that, The device includes a pot body and a pressure cooker lid as described in claim 9. When the pressure cooker lid is closed on the pot body, the clamping device can simultaneously clamp the pressure cooker lid and the pot body.

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