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 clamps are connected to the supporting part in a sliding mode, one clamp is a driving clamp, the driving clamp slides in the first direction, and the clamps are connected through a transmission part so that the clamps can get close to each other at the same time and achieve clamping, or the clamps can get away from each other at the same time and cancel clamping; the lifting handle is arranged above the supporting piece, the lifting handle comprises a holding part, and the holding part extends in the first direction; the operating part is connected to the lifting handle and can slide in the first direction, one end of the operating part is exposed out of the top of the holding part, and the other end of the operating part is connected to the driving clamp so as to drive the driving clamp to slide in the first direction. The convenience of uncovering operation of the pressure cooker cover can be improved, and the use experience of the pressure cooker is improved.

Description

Technical Field

[0001] This application relates to the field of kitchen utensil technology, and more particularly to a clamping device, a pressure cooker lid, and a pressure cooker. Background Technology

[0002] A pressure cooker is a common cooking appliance that primarily increases the heating temperature by increasing the pressure inside the pot, thereby accelerating the heating process. A pressure cooker mainly consists of a pressure lid and a pot body, connected by clamps. These clamps can move relative to the pot body to simultaneously clamp or release the pressure. However, the opening and closing of existing pressure cooker lids is inconvenient, affecting the user experience. Utility Model Content

[0003] This application provides a clamping device, a pressure cooker lid, and a pressure cooker to improve the convenience of opening the pressure cooker lid and enhance the user experience of the pressure cooker.

[0004] The first aspect of this application provides a clamping device, which includes:

[0005] Support components;

[0006] At least two clamps are slidably connected to the support member, one of the clamps being an active clamp that slides along a first direction. The clamps are interconnected by a transmission member to simultaneously bring them closer together and clamp them, or to simultaneously move them away from each other and release the clamping.

[0007] A handle is provided above the support member, and the handle includes a grip portion that extends along the first direction;

[0008] An operating element is connected to the handle and is slidable along the first direction. One end of the operating element is exposed at the top of the grip portion, and the other end of the operating element is connected to the active clamp to drive the active clamp to slide along the first direction.

[0009] The clamping device provided in this application includes a support member, at least two clamps, a handle, and an operating member. The clamps are slidably connected to the support member, one of which is an active clamp that slides along a first direction. The clamps are interconnected via a transmission member, allowing them to simultaneously move closer to each other and clamp, or simultaneously move away from each other and release the clamp. The handle is located above the support member and includes a grip portion that extends along the first direction. The operating member is connected to the handle and can slide along the first direction. One end of the operating member protrudes from the top of the grip portion, and the other end of the operating member is connected to the active clamp to drive the active clamp to slide along the first direction. On the one hand, the grip extends roughly horizontally, allowing the user to wrap their palm and four fingers around it, increasing the stability of lifting the pressure cooker lid. On the other hand, the control element is exposed at the top of the grip, allowing the user to slide it with their thumb. This makes operation convenient and easy to apply force, and it does not affect the user's normal grip on the handle. While pushing the control element to slide, the user can stably hold the handle and lift the pressure cooker lid, thereby improving the convenience of opening the pressure cooker lid and enhancing the user experience.

[0010] Optionally, the handle includes a detachably connected first body and a second body, which are disposed opposite to each other on the surface of the support member along a second direction perpendicular to the first direction. At least a portion of the operating member is sandwiched between the first body and the second body. On the one hand, both the surfaces of the first body and the second body form an open installation and operating space, making it easier to insert the operating member into the handle. On the other hand, the first body and the second body are located on opposite sides of the operating member along its width, allowing both the first body and the second body to independently provide support for the operating member, thereby increasing the continuity and stability of the operating member's movement.

[0011] Optionally, the first body is integrally formed with the support to increase the stability of the handle and prevent relative movement between the handle and the support, which would affect the sensitivity and reliability of the operation. The second body has an elastic buckle protruding from one end facing the support. The elastic buckle is connected to the support, so that the second body and the support are interconnected along the axial direction of the lid. This ensures that the second body and the first body share the weight of the pressure cooker lid, preventing the first body from being damaged due to excessive force. Furthermore, the second body can be fixed to the support simply by placing it in the corresponding position on the support and pressing it down, simplifying the installation of the second body.

[0012] Optionally, the support member has a groove facing the second body, and the second body has an end plate at one end facing the support member. The end plate covers the groove and is flush with the surface of the support member. On the one hand, the groove surrounds the second body and acts as a limiting element, which can increase the stability of the second body and prevent it from moving along the surface of the support member. On the other hand, the end plate of the second body is flush with the surface of the support member, which can make the clamping device form a flat and continuous surface, improving the appearance of the clamping device.

[0013] Optionally, the number of clamps is two, and the two clamps are arranged opposite each other along the first direction. A pre-stretched elastic element connects the two clamps to force them to move closer together and clamp. When the user releases the operating component, the two clamps automatically move closer together and clamp under the action of the pre-stretched spring, eliminating the need for manual operation by the user. This simplifies the use of the pressure cooker lid, prevents the lid from not clamping properly to the pot, and improves the safety of using the pressure cooker lid.

[0014] Optionally, the transmission component is a gear, which is rotatably connected to the support member. The clamp is provided with a rack that meshes with the gear, and the rack extends along the first direction. The racks of the two clamps are arranged opposite to each other on both sides of the gear. The two sides of the same gear form a gear and rack mechanism with one clamp, enabling the two clamps to move synchronously in opposite directions. This results in high transmission efficiency, smoother movement, and flexible and efficient reciprocating motion.

[0015] Optionally, at least one end of the grip is provided with a connecting portion, which extends toward the side where the support is located. The operating member includes a first segment, a second segment, and a third segment arranged in sequence. The first segment is accommodated in the inner cavity of the grip and slides with the grip, thereby providing reliable support and guidance for the operating member at the user's operating end, preventing the operating member from shaking on the grip and affecting the user's operating experience. The second segment extends along the connecting portion, allowing the operating member to be close to the support, facilitating the connection between the operating member and the active clamp. The third segment slides with the support, thereby providing reliable support and guidance for the operating member at the clamp end, preventing the operating member from shaking on the support and affecting the stability of the clamp's movement.

[0016] Optionally, the connecting portion has a notch on the side facing the grip, the notch extending from the inner cavity of the connecting portion toward the side where the grip is located; when the operating member slides along the first direction, the connecting portion enters or extends from the inner cavity of the connecting portion through the notch. By utilizing the internal space of the connecting portion to house the operating member and utilizing the external space of the connecting portion to extend the movement stroke of the operating member, sufficient installation and movement space can be provided for the operating member through a smaller connecting portion, reducing the overall volume of the handle and improving the compactness of the overall structure.

[0017] A second aspect of this application provides a pressure cooker lid, comprising a lid body and any of the clamping devices provided in this application, wherein the clamping device is detachably connected to the lid body. On one hand, the grip extends generally horizontally, allowing the user to encircle the grip with their palm and four fingers, increasing the stability of lifting the pressure cooker lid. On the other hand, the operating component is exposed at the top of the grip, allowing the user to slide the operating component using their thumb. This operation is convenient and easy to apply force, and does not affect the user's normal grip on the handle. While pushing the operating component to slide, the user can stably grip the handle and lift the pressure cooker lid, thereby improving the convenience of opening the pressure cooker lid and enhancing the user experience.

[0018] A third aspect of this application provides a pressure cooker, comprising 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 can simultaneously clamp the pressure cooker lid and the pot body. On one hand, the grip extends generally horizontally, allowing the user to wrap their palm and four fingers around the grip, increasing the stability of lifting the pressure cooker lid. On the other hand, the operating component is exposed at the top of the grip, allowing the user to slide the operating component with their thumb. This operation is convenient and easy to apply force, and does not affect the user's normal grip on the handle. While pushing the operating component to slide, the user can stably grip the handle and lift the pressure cooker lid, thereby improving the convenience of opening the pressure cooker lid and enhancing the user experience.

[0019] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0020] Figure 1 A three-dimensional structural schematic diagram of the pressure cooker lid provided in an embodiment of this application;

[0021] Figure 2 A cross-sectional structural schematic diagram of the pressure cooker lid provided in an embodiment of this application;

[0022] Figure 3 This is a partial structural schematic diagram of the pressure cooker lid provided in an embodiment of this application;

[0023] Figure 4 This is a three-dimensional structural diagram of the clamping device provided in the embodiments of this application;

[0024] Figure 5 This is a partial structural diagram of the clamping device provided in the embodiment of this application in the state of handle removal.

[0025] Figure label:

[0026] 10-Clamping device;

[0027] 20-Cap;

[0028] 30 - Check valve;

[0029] 1-Supporting component;

[0030] 11-Slide groove;

[0031] 12-Connecting through hole;

[0032] 13-Groove;

[0033] 2- Clamps;

[0034] 2a-Active clamp;

[0035] 2b - Passive clamp;

[0036] 21-Rack;

[0037] 3-Handle;

[0038] 3a - Grip section;

[0039] 3b - Connecting part;

[0040] 3c - Notch;

[0041] 31-First ontology;

[0042] 32-Second Body;

[0043] 321-Elastic buckle;

[0044] 322-End plate;

[0045] 4-Operating components;

[0046] 41-First paragraph;

[0047] 42 - Second paragraph;

[0048] 43 - Third paragraph;

[0049] 44-Operating Section;

[0050] 45 - Connecting pin;

[0051] 5-Transmission components;

[0052] 6-Pre-stretched elastic element.

[0053] 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

[0054] 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.

[0055] 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.

[0056] 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.

[0057] like Figure 1 As shown in the illustration, this application provides a pressure cooker lid, which 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 connected to the pot body, the clamping device 10 can simultaneously clamp the pressure cooker lid to the pot body, thereby achieving a reliable connection between the pressure cooker lid and the pot body. The lid body 20 may be provided with a sealing ring, a pressure limiting valve, and a check valve 30; the sealing ring can form a sealing state between the pressure cooker lid and the pot body to prevent gas leakage between the pressure cooker lid and the pot body; the pressure limiting valve is used to limit the maximum pressure inside the pot; the check valve 30 passes through the pressure cooker lid and can rise or fall along the pressure cooker lid. When the check valve 30 rises, a sealing state is formed, and high pressure can be formed inside the pot; when the check valve 30 falls, a pressure relief state is formed, and the pressure inside the pot is released.

[0058] like Figures 2-4 As shown, the clamping device 10 provided in this embodiment includes a support member 1 and at least two clamps 2. 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 integrated as a whole and detachably connected to the lid 20, thereby facilitating disassembly, assembly, cleaning and maintenance. The clamps 2 are spaced apart around the axis of the lid 20. The clamps 2 are slidably connected to the support member 1 and can slide radially along the lid 20, thereby clamping and unclamping. When the clamps 2 clamp, the clamps 2 avoid the top of the stop valve 30, and the stop valve 30 can rise freely, so that high pressure can be formed normally inside the pot; and after the stop valve 30 rises, the stop valve 30 acts as a stop for the clamps 2, preventing the clamps 2 from moving away from each other, preventing the user from opening the pressure cooker lid under high pressure, and ensuring the safety of opening the pressure cooker lid. When clamp 2 releases its grip, it blocks the top of stop valve 30, preventing it from rising and thus preventing high pressure from forming inside the pot. This avoids high pressure even when the pressure cooker lid is not properly closed, ensuring the safety of cooking with the pressure cooker lid. Each clamp 2 is interconnected via transmission component 5, allowing them to simultaneously move closer together and clamp, or simultaneously move away from each other and release their grip.

[0059] Furthermore, the clamping device 10 also includes a handle 3 and an operating member 4. The handle 3 is located above the support member 1 to facilitate the user's grip and lifting of the pressure cooker lid. The operating member 4 is slidably connected to the handle 3, and the clamp 2 is driven to slide along the support member via the operating member 4.

[0060] Specifically, the clamp 2 connected to the operating element 4 is the active clamp 2a, which slides via the operating element 4; the other clamps 2 are passive clamps 2b, which slide synchronously via the transmission element 5. The active clamp 2a slides along a first direction, meaning that the reciprocating motion direction of the active clamp 2a is the first direction.

[0061] Furthermore, the handle 3 includes a grip portion 3a that extends along a first direction, meaning the length direction of the handle 3 is approximately aligned with the first direction. An operating member 4 is connected to the handle 3 and can slide along the first direction. One end of the operating member 4 protrudes from the top of the grip portion 3a, and the other end is connected to the active clamp 2a to drive the active clamp 2a to slide along the first direction. On one hand, the grip portion 3a extends approximately horizontally, allowing the user to wrap their palm and four fingers around it, increasing the stability of lifting the pressure cooker lid. On the other hand, the operating member 4 protrudes from the top of the grip, allowing the user to push it with their thumb, making operation convenient and easy to apply force. Furthermore, it does not affect the user's normal grip on the handle 3. While pushing the operating member 4 to slide, the user can stably grip the handle 3 and lift the pressure cooker lid, thereby improving the convenience of opening the pressure cooker lid and enhancing the user experience.

[0062] In some embodiments, there are two clamps 2, which are arranged opposite to each other along the first direction. That is, the two clamps 2 are made to move synchronously in opposite directions by the transmission member 5, which can simplify the transmission structure between the clamps 2 and improve the force transmission efficiency, making the operating member 4 more labor-saving.

[0063] Furthermore, a pre-tensioned elastic element 6 (e.g., a pre-tensioned spring) is connected between the two clamps 2 to force the two clamps 2 to move closer together and clamp. When the user releases the operating element 4, the two clamps 2 automatically move closer together and clamp under the action of the pre-tensioned spring, eliminating the need for the user to manually operate the clamps 2 to clamp. This simplifies the use of the pressure cooker lid, prevents the pressure cooker lid from not clamping properly to the pot body, and improves the safety of using the pressure cooker lid.

[0064] Furthermore, the transmission component 5 is a gear, which is rotatably connected to the support component 1 to ensure that the position of the gear does not change. The clamp 2 is provided with a rack 21 that meshes with the gear. The rack 21 extends along a first direction, and the racks 21 of the two clamps 2 are positioned opposite each other on both sides of the gear. That is, each side of the same gear forms a gear-rack 21 mechanism with one clamp 2, enabling the two clamps 2 to move synchronously in opposite directions. This results in high transmission efficiency, smoother movement, and flexible and efficient reciprocating motion. It is understood that in other embodiments, the transmission component 5 can also be any suitable component or mechanism such as a connecting rod or an eccentric wheel, as long as it enables the two clamps 2 to move synchronously in opposite directions.

[0065] Continue to refer to Figures 2-4In the above embodiments, the grip portion 3a and the support member 1 are spaced apart along the height direction to facilitate the user to insert their fingers under the grip portion 3a for gripping operation. At least one end of the grip portion 3a is provided with a connecting portion 3b; that is, one end of the grip portion 3a is provided with a connecting portion 3b, or both ends of the grip portion 3a are provided with connecting portions 3b. The connecting portion 3b extends towards the side where the support member 1 is located, and the connecting portion 3b is connected to the support member 1 by fasteners or integral molding, thereby connecting the handle 3 and the support member 1 into a whole. The portion of the operating member 4 exposed outside the grip portion 3a is the operating portion 44. The operating portion 44 can be configured to facilitate user pushing operation; the operating member 4 and the active clamp 2a can be connected to each other by a connecting pin 45 or other means, as long as the operating member 4 can drive the active clamp 2a to move in the first direction.

[0066] Furthermore, the operating component 4 includes a first segment 41, a second segment 42, and a third segment 43 arranged sequentially. The first segment 41 is connected to the operating part 44, and the third segment 43 is connected to the connecting pin 45. The first segment 41 is accommodated in the inner cavity of the grip part 3a and slides with the grip part 3a, thereby providing reliable support and guidance for the operating component 4 at the user's operating end, preventing the operating component 4 from shaking on the grip part 3a and affecting the user's operating experience. The second segment 42 extends along the connecting part 3b, allowing the operating component 4 to be close to the support member 1, facilitating the connection between the operating component 4 and the active clamp 2a. The third segment 43 slides with the support member 1, that is, the support member 1 is provided with a groove 11 adapted to the third segment 43, thereby providing reliable support and guidance for the operating component 4 at the clamp 2 end, preventing the operating component 4 from shaking on the support member 1 and affecting the stability of the clamp 2's operation.

[0067] Furthermore, at least a portion of the second segment 42 is accommodated within the cavity of the connecting portion 3b, thereby maximizing the space occupied by the operating member 4 within the handle 3 and improving the overall structural compactness. Understandably, in other embodiments, the second segment 42 and the connecting portion 3b can be arranged side-by-side, meaning the second segment 42 is entirely located outside the connecting portion 3b, and the second segment 42 moves closer to or further away from the connecting portion 3b as the operating member 4 moves.

[0068] Furthermore, the connecting part 3b has a notch 3c on the side facing the grip part 3a, and the notch 3c extends from the inner cavity of the connecting part 3b toward the side where the grip part 3a is located. When the operating member 4 slides along the first direction, the connecting part 3b enters or extends into the inner cavity of the connecting part 3b through the notch 3c. The internal space of the connecting part 3b is used to house the operating member 4, and the external space of the connecting part 3b is used to expand the movement stroke of the operating member 4. Thus, sufficient installation space and movement space for the operating member 4 can be provided through a smaller connecting part 3b, reducing the overall volume of the handle 3 and improving the compactness of the overall structure.

[0069] Furthermore, the third segment 43 is located on the same side as the first segment 41 on the second segment 42, and the support member 1 has a groove 11 below the gripping part 3a. This positions the third segment 43 within the space enclosed by the gripping part 3a and the connecting part 3b, thereby reducing the length of the operating member 4 extending in the first direction. This improves the rigidity of the operating member 4, preventing deformation and other damage, and also enhances the overall structural compactness. A detachable cover plate or other components can be installed above the groove 11 to seal it and improve the appearance of the pressure cooker lid.

[0070] like Figure 5 As shown, the handle 3 includes a first body 31 and a second body 32 that are detachably connected. For example, the first body 31 and the second body 32 are connected to each other by fasteners such as screws or clips. The first body 31 and the second body 32 form a space to accommodate the operating component 4. The first body 31 and the second body 32 can be two parts formed by dividing the handle 3 along any appropriate direction such as its height direction, length direction, width direction, or tilt direction, as long as the operating component 4 can be installed in the handle 3.

[0071] Furthermore, the first body 31 and the second body 32 are disposed opposite each other on the surface of the support member 1 along a second direction, which is perpendicular to the first direction. At least a portion of the operating member 4 is sandwiched between the first body 31 and the second body 32. On the one hand, the surfaces of both the first body 31 and the second body 32 form an open installation and operating space, making it easier for the operating member 4 to be inserted into the handle 3. On the other hand, the first body 31 and the second body 32 are located on both sides of the operating member 4 along the width direction, so that both the first body 31 and the second body 32 can independently provide support for the operating member 4, which can increase the continuity and stability of the movement of the operating member 4.

[0072] Furthermore, the first body 31 is integrally formed on the support member 1 to increase the stability of the handle 3 and prevent relative movement between the handle 3 and the support member 1, which would affect the sensitivity and reliability of the operation of the operating member 4. The second body 32 is connected to the support member 1 by fasteners such as clips or screws, so that the second body 32 and the support member 1 are interconnected along the axial direction of the lid 20, ensuring that the second body 32 and the first body 31 share the weight of the pressure cooker lid and preventing the first body 31 from being damaged due to excessive force.

[0073] Furthermore, the second body 32 has a protruding elastic buckle 321 at one end facing the support member 1. The elastic buckle 321 is connected to the support member 1. Specifically, the support member 1 has a connecting through hole 12 corresponding to the elastic buckle 321. The elastic buckle 321 passes through the connecting through hole 12 and is hooked onto the lower surface of the support member 1. By simply placing the second body 32 in the corresponding position on the support member 1 and pressing down on the second body 32, the second body 32 can be connected and fixed to the support member 1, thereby simplifying the installation operation of the second body 32.

[0074] Furthermore, the support member 1 has a groove 13 facing the second body 32, and the aforementioned sliding groove 11 can be disposed within the groove 13. The end of the second body 32 facing the support member 1 has an end plate 322, which covers the groove 13 and is flush with the surface of the support member 1. On the one hand, the groove 13 surrounds the second body 32 and acts as a limiting element, which can increase the stability of the second body 32 and prevent the second body 32 from moving along the surface of the support member 1. On the other hand, the end plate 322 of the second body 32 is flush with the surface of the support member 1, which can make the clamping device 10 form a flat and continuous surface, improving the appearance of the clamping device 10.

[0075] In addition, this application also 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.

[0076] 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 tongs device, characterized in that, include: Support component (1); At least two clamps (2) are slidably connected to the support member (1), one of the clamps (2) is an active clamp (2a), the active clamp (2a) slides along a first direction, and each clamp (2) is connected to each other through a transmission member (5) so that each clamp (2) simultaneously approaches each other and clamps, or simultaneously moves each clamp (2) away from each other and cancels the clamping; A handle (3) is provided above the support member (1), and the handle (3) includes a gripping part (3a) that extends along the first direction; An operating element (4) is connected to the handle (3) and can slide along the first direction. One end of the operating element (4) is exposed on the top of the grip (3a), and the other end of the operating element (4) is connected to the active clamp (2a) to drive the active clamp (2a) to slide along the first direction.

2. The tongs apparatus of claim 1, wherein, The handle (3) includes a first body (31) and a second body (32) that are detachably connected. The first body (31) and the second body (32) are disposed opposite each other on the surface of the support (1) along a second direction, which is perpendicular to the first direction. At least a portion of the operating member (4) is sandwiched between the first body (31) and the second body (32).

3. The tongs apparatus of claim 2, wherein, The first body (31) is integrally formed on the support member (1), and the second body (32) has an elastic buckle (321) protruding from one end facing the support member (1), and the elastic buckle (321) is connected to the support member (1).

4. The tongs apparatus of claim 3, wherein, The support member (1) has a groove (13) facing the second body (32), and the second body (32) has an end plate (322) facing the support member (1). The end plate (322) covers the groove (13) and is flush with the surface of the support member (1).

5. The tongs apparatus of claim 1, wherein, The number of clamps (2) is two, and the two clamps (2) are arranged opposite to each other along the first direction. A pre-stretched elastic element (6) is connected between the two clamps (2) to force the two clamps (2) to move closer to each other and achieve clamping.

6. The tongs apparatus of claim 5, wherein, The transmission component (5) is a gear, which is rotatably connected to the support component (1). The clamp (2) is provided with a rack (21) that meshes with the gear. The rack (21) extends along the first direction, and the racks (21) of the two clamps (2) are arranged opposite to each other on both sides of the gear.

7. The tongs device according to any one of claims 1-6, characterized in that, The grip (3a) has a connecting part (3b) at at least one end, the connecting part (3b) extends toward the side where the support (1) is located, and the operating member (4) includes a first segment (41), a second segment (42) and a third segment (43) arranged in sequence. The first segment (41) is accommodated in the inner cavity of the grip (3a) and slides with the grip (3a), the second segment (42) extends along the connecting part (3b), and the third segment (43) slides with the support (1).

8. The tongs apparatus of claim 7, wherein, The connecting part (3b) has a notch (3c) on the side facing the gripping part (3a), and the notch (3c) extends from the inner cavity of the connecting part (3b) toward the side where the gripping part (3a) is located; When the operating member (4) slides along the first direction, the connecting part (3b) enters or extends into the inner cavity of the connecting part (3b) through the notch (3c).

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 detachably connected to the cover.

10. A pressure cooker characterized by 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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